Patent Application
20250163244
The present invention relates to a composition.
Specifically, the present invention relates to a composition capable of efficiently exerting a reinforcing effect by discontinuous carbon fibers.
In Patent Document 1, it is disclosed that a specific aromatic polyether produced by causing a component having a specific polymerization catalysis to be present in a reaction system is mixed with a reinforcing material or a filler such as glass fiber, carbon fiber, aramid fiber, carbonate calcium and calcium silicate, and then it is used.
[Patent Document 1] JP S 64-065129 A
However, in the prior art including Patent Document 1, there is room for further improvement from the viewpoint of efficiently exhibiting the reinforcing effect by a discontinuous carbon fiber.
One of the objects of the invention is to provide a composition which can efficiently exhibit the reinforcing effect by discontinuous carbon fiber.
As a result of intensive studies, the present inventors have found that when a discontinuous carbon fiber is blended into a specific aromatic polyether, the reinforcing effect by the discontinuous carbon fibers can be efficiently exhibited, and the present inventors have completed the present disclosure.
According to the present invention, the following composition can be provided.
According to the present invention, it is possible to provide a composition capable of efficiently exhibiting a reinforcing effect by the discontinuous carbon fiber.
As a result, for example, when a certain level of strength is imparted to the composition, the effect of reducing the blending amount of the discontinuous carbon fiber can be obtained as compared with the conventional technique. By reducing the blending amount of the discontinuous carbon fiber, the viscosity increase of the composition is suppressed, and the kneading property is improved, and the effect of reducing the weight of the composition is also obtained.
Hereinafter, the composition of the present invention will be described in detail.
In the present specification, the expression “x” to “y” as used herein represents the numerical range of “x or more and y or less”. An upper limit value and a lower limit value described for the numerical range may be arbitrarily combined.
The composition according to an aspect of the invention (also referred to as the first embodiment) includes
According to the composition of the present aspect, the effect of efficiently exhibiting the reinforcing effect by the discontinuous carbon fiber can be obtained.
As a result, for example, when a certain level of strength is imparted to the composition, the effect of reducing the blending amount of the discontinuous carbon fiber can be obtained as compared with the conventional technique. By reducing the blending amount of the discontinuous carbon fiber, the viscosity increase of the composition is suppressed, and the kneading property is improved, and the effect of reducing the weight of the composition is also obtained.
The following describes measurement method of the amount of chlorine atom (Cl-1) bonded to the aromatic polyether, the amount of chlorine atom contained as free components in the aromatic polyether (Cl-2, also referred to as “the amount of inorganic chlorine”) and the total amount of these chlorine atoms (Cl-3, also referred to as “the amount of the total chlorine in the aromatic polyether”). Also, methods for measuring the amount of fluorine atom (F-1) bonded to the aromatic polyether, the amount of fluorine atom contained as a free component in the aromatic polyether (F-2, also referred to as “amount of inorganic fluorine”) and the total amount of these fluorine atoms (F-3, also referred to as “amount of the total fluorine in the aromatic polyether”) are described. Further, methods for measuring the amount of potassium atom and the amount of sodium atom contained as free components in the aromatic polyether are also described.
A sample (aromatic polyether) is introduced into a combustion furnace, combusted in a combustion gas containing oxygen, and the generated gas is collected in an absorbent liquid, and then the absorbent liquid is separated and quantified by ion chromatography. The quantitative values are each determined based on a calibration curve produced from a reference having a known concentration. Measurement conditions are described below.
Each amount of potassium atom (K) and sodium atom (Na) in the aromatic polyether pretreated with aromatic polyether in the following manner is measured at 589.592 nm for Na and at 766.481 nm for K by ICP emission spectroscopy.
The sample 1 g is weighed to the platinum dish, concentrated sulfuric acid is added to the dish, heated to carbonization treatment, and then the platinum dish is placed in an electric oven for ashing treatment at 550° C. for 12 hours.
After the ashing treatment, hydrochloric acid is added, and then heat treatment is performed. After cooling, ultrapure water is added thereto to make a constant volume. When the sample contains an inorganic filler (discontinuous carbon fiber), hydrofluoric acid is added after the ashing treatment, and then heated and dried treatment is conducted, hydrochloric acid is added after cooling, and heat treatment is performed. After cooling, ultrapure water is added thereto to make a constant volume.
The quantitative values are each determined based on a calibration curve produced from a reference having a known concentration. The calibration curve solution shall be the same as the hydrochloric acid concentration of the sample solution.
Regarding the calculation of the amount of chlorine atom bonded to the aromatic polyether (ppm by mass) (Cl-1) and the amount of fluorine atom bonded to the aromatic polyether (ppm by mass) (F-1), when the monomers (reactants) 4,4′-difluorobenzophenone and 4,4′-dichlorobenzophenone used in synthesizing aromatic polyether remain in the aromatic polyether, the amount of fluorine atom contained in the aromatic polyether as 4,4′-difluorobenzophenone and the amount of chlorine atom contained as 4,4′-dichlorobenzophenone are quantified by the following methods, and the influences thereof are eliminated.
First, a solid-state sample (aromatic polyether) is pulverized with a blender, washed with acetone and water in this order, and dried in an explosion-proof dryer at 180° C. When a reaction mixture (product) immediately after a reaction for the production of the aromatic polyether is used as a sample, the product is cooled and solidified after the completion of the reaction to be used as the solid sample. The blender to be used is not particularly limited, and for example, 7010HS manufactured by Waring may be used.
Then, the dried sample 1 g is then weighed in an eggplant flask, and cyclohexanone 100 ml and boiling stone are added thereto, the mixture is heated to reflux with a mantle heater for an hour, allowed to cool to room temperature, and the solid content is removed by filtration.
And then, the obtained solutions are measured by gas chromatography to calculate the amount of 4,4′-difluorobenzophenone (ppm by mass) and the amount of 4,4′-dichlorobenzophenone (ppm by mass) in the sample. Here, the amount of 4,4′-difluorobenzophenone (ppm by mass) and the amount of 4,4′-dichlorobenzophenone (ppm by mass) in the sample are determined based on a calibration curve prepared from a reference of a known concentration. Measurement conditions of gas chromatograph are described below.
The amount of fluorine atom (ppm by mass) contained as 4,4′-difluorobenzophenone and the amount of chlorine atom (ppm by mass) contained as 4,4′-dichlorobenzophenone in the aromatic polyether are converted from the following calculation formula.
When the amount of fluorine atom (ppm by mass) contained in the aromatic polyether as 4,4′-difluorobenzophenone and the amount of chlorine atom (ppm by mass) contained in the aromatic polyether as 4,4′-dichlorobenzophenone are both less than the lower limit of quantitation of 100 ppm by mass, the calculation results of the amount of fluorine atom (F-1) bonded to the aromatic polyether described above and the amount of chlorine atom (Cl-1) bonded to the aromatic polyether described above are not affected (the impact is negligible).
When the amount of fluorine atom (ppm by mass) (F-4) contained as 4,4′-difluorobenzophenone in the aromatic polyether is 100 ppm by mass or more, the amount of fluorine atom (ppm by mass) (F-1) bonded to the aromatic polyether can be calculated by subtracting the amount of inorganic fluorine (ppm by mass) (F-2) from the amount of the total fluorine (ppm by mass) (F-3) and further subtracting the amount of fluorine atom (ppm by mass) (F-4) contained as 4,4′-difluorobenzophenone therefrom.
When the amount of chlorine atom (ppm by mass) (Cl-4) contained as 4,4′-dichlorobenzophenone in the aromatic polyether is 100 ppm by mass or more, the amount of chlorine atom (ppm by mass) (F-1) bonded to the aromatic polyether can be calculated by subtracting the amount of inorganic fluorine (ppm by mass) (Cl-2) from the amount of the total chlorine (ppm by mass) (Cl-3) and further subtracting the amount of chlorine atom (ppm by mass) (Cl-4) contained as 4,4′-dichlorobenzophenone therefrom.
In one embodiment, the amount of chlorine atom (Cl-1) bonded to the aromatic polyether is 10 ppm by mass or more, 50 ppm by mass or more, 100 ppm by mass or more, 500 ppm by mass or more, 1,000 ppm by mass or more, or 2,000 ppm by mass or more, and it is 10,000 ppm by mass or less, 6,000 ppm by mass or less, 5,000 ppm by mass or less, or 4,000 ppm by mass or less. Also, in one embodiment, the amount of chlorine atom (Cl-1) bonded to the aromatic polyether is 10 to 10,000 ppm by mass, 500 to 6,000 ppm by mass, 1,000 to 5,000 ppm by mass or 2,000 to 4,000 ppm by mass. Further, in one embodiment, the amount of chlorine atom (Cl-1) bonded to the aromatic polyether may be 3,000 to 5,000 ppm by mass.
In one embodiment, the amount of inorganic chlorine (Cl-2) in the aromatic polyether is 0 ppm by mass, 0 ppm by mass or more, 10 ppm by mass or more, 20 ppm by mass or more, 35 ppm by mass or more, or 50 ppm by mass or more, and it is 200 ppm by mass or less, 100 ppm by mass or less, 85 ppm by mass or less, or 70 ppm by mass or less. In one embodiment, the amount of inorganic chlorine (Cl-2) in the aromatic polyether is 0 to 200 ppm by mass, 10 to 100 ppm by mass, 20 to 85 ppm by mass or 35 to 70 ppm by mass.
In one embodiment, the amount of the total chlorine (Cl-3) in the aromatic polyether is 10 ppm by mass or more, 50 ppm by mass or more, 100 ppm by mass or more, 500 ppm by mass or more, 1,000 ppm by mass or more, or 2,000 ppm by mass or more, and it is 10,000 ppm by mass or less, 6,000 ppm by mass or less, 5,000 ppm by mass or less, or 4,000 ppm by mass or less. In one embodiment, the amount of the total chlorine (Cl-3) in the aromatic polyether is 10 to 10,000 ppm by mass, 100 to 10,000 ppm by mass, 500 to 6,000 ppm by mass, 1,000 to 5,000 ppm by mass or 2,000 to 4,000 ppm by mass. Further, in one embodiment, the amount of the total chlorine (Cl-3) in the aromatic polyether may be 3,000 to 5,000 ppm by mass.
The aromatic polyether may be bonded to fluorine atom or may not be bonded to fluorine atom.
In one embodiment, the amount of fluorine atom (F-1) bonded to the aromatic polyether is 0 ppm by mass, 0 ppm by mass or more, 10 ppm by mass or more, 50 ppm by mass or more, 100 ppm by mass or more, 300 ppm by mass or more, 500 ppm by mass or more, or 1,000 ppm by mass or more, and it is 10,000 ppm by mass or less, 5,000 ppm by mass or less, 2,500 ppm by mass or less, 2,000 ppm by mass or less, 1,500 ppm by mass or less, or 1,200 ppm by mass or less. Also, in one embodiment, the amount of fluorine atom (F-1) bonded to the aromatic polyether is 0 to 10,000 ppm by mass, 10 to 10,000 ppm by mass, 100 to 5,000 ppm by mass, 300 to 2,500 ppm by mass, 500 to 2,000 ppm by mass, 500 to 1,500 ppm by mass or 500 to 1,200 ppm by mass. Further, in one embodiment, the amount of fluorine atom (F-1) bonded to the aromatic polyether may be 300 to 1,000 ppm by mass.
In one embodiment, the amount of inorganic fluorine (F-2) in the aromatic polyether is 0 ppm by mass, 0 ppm by mass or more, 10 ppm by mass or more, 20 ppm by mass or more, 30 ppm by mass or more, or 50 ppm by mass or more, and it is 200 ppm by mass or less, 100 ppm by mass or less, 90 ppm by mass or less, or 85 ppm by mass or less. In one embodiment, the amount of inorganic fluorine (F-2) in the aromatic polyether is 0 to 200 ppm by mass, 20 to 200 ppm by mass, 30 to 100 ppm by mass, 50 to 100 ppm by mass or 50 to 90 ppm by mass.
In one embodiment, the amount of the total fluorine (F-3) in the aromatic polyether is 0 ppm by mass, 0 ppm by mass or more, 10 ppm by mass or more, 50 ppm by mass or more, 100 ppm by mass or more, 300 ppm by mass or more, 500 ppm by mass or more, or 1,000 ppm by mass or more, and it is 10,000 ppm by mass or less, 5,000 ppm by mass or less, 2,500 ppm by mass or less, 2,000 ppm by mass or less, 1,500 ppm by mass or less, or 1,200 ppm by mass or less. In addition, in one embodiment, the amount of the total fluorine (F-3) in the aromatic polyether is 10 to 10,000 ppm by mass, 50 to 5,000 ppm by mass, 100 to 2,500 ppm by mass, 100 to 2,000 ppm by mass, 300 to 2,000 ppm by mass, 300 to 1,500 ppm by mass, 500 to 1,500 ppm by mass or 500 to 1,200 ppm by mass. Further, in one embodiment, the amount of the total fluorine (F-3) in the aromatic polyether may be 300 to 1,000 ppm by mass.
In one embodiment, the amount of potassium atom contained as a free component in the aromatic polyether is 20 ppm by mass or more, 30 ppm by mass or more, or 50 ppm by mass or more, and it is 150 ppm by mass or less, 100 ppm by mass or less, or 80 ppm by mass or less. Also, in one embodiment, the amount of potassium atom contained in the aromatic polyether as a free component is 20 to 150 ppm by mass, 30 to 100 ppm by mass or 30 to 80 ppm by mass.
In one embodiment, the amount of sodium atom contained in the aromatic polyether as a free component is 20 ppm by mass or more, 30 ppm by mass or more, or 50 ppm by mass or more, and it is 150 ppm by mass or less, 100 ppm by mass or less, or 90 ppm by mass or less. Also, in one embodiment, the amount of sodium atom contained in the aromatic polyether as a free component is 20 to 150 ppm by mass, 30 to 100 ppm by mass or 50 to 90 ppm by mass.
The aromatic polyether may include an aromatic polyether to which the chlorine atom is bonded (hereinafter may be referred to as “component (a-1)”) and an aromatic polyether to which the fluorine atom is bonded (hereinafter may be referred to as “component (a-2)”).
The amount of chlorine atom bonded to the component (a-1) is, for example, 10 ppm by mass or more, 50 ppm by mass or more, 100 ppm by mass or more, 500 ppm by mass or more, 1,000 ppm by mass or more, or 2,000 ppm by mass or more, and it is 10,000 ppm by mass or less, 6,000 ppm by mass or less, 5,000 ppm by mass or less, or 4,000 ppm by mass or less. Also, the amount of chlorine atom bonded to the component (a-1) is, for example, 10 to 10,000 ppm by mass, 500 to 6,000 ppm by mass, 1,000 to 5,000 ppm by mass or 2,000 to 4,000 ppm by mass. Further, in one embodiment, the amount of chlorine atom bonded to the component (a-1) may be 3,000 to 5,000 ppm by mass.
The amount of fluorine atom bonded to the component (a-2) is, for example, 0 ppm by mass, 0 ppm by mass or more, 10 ppm by mass or more, 50 ppm by mass or more, 100 ppm by mass or more, 300 ppm by mass or more, 500 ppm by mass or more, or 1,000 ppm by mass or more, and it is 10,000 ppm by mass or less, 5,000 ppm by mass or less, 2,500 ppm by mass or less, 2,000 ppm by mass or less, 1,500 ppm by mass or less, or 1,200 ppm by mass or less. The amount of fluorine atom bonded to the component (a-2) is, for example, 0 to 10,000 ppm by mass, 10 to 10,000 ppm by mass, 50 to 5,000 ppm by mass, 100 to 2,500 ppm by mass, 100 to 2,000 ppm by mass, 300 to 2,000 ppm by mass, 300 to 1,500 ppm by mass, 500 to 1,500 ppm by mass or 500 to 1,200 ppm by mass. Further, in one embodiment, the amount of fluorine atom bonded to the component (a-2) may be 300 to 1,000 ppm by mass.
In one embodiment, the mass ratio of the component (a-1) and the component (a-2) is preferably 1:99 to 100:0, 1:99 to 99:1, 21:79 to 99:1, 25:75 to 95:5, or 30:70 to 90:10, and more preferably 40:60 to 80:20. Also, in one embodiment, the mass ratio of the component (a-1) and the component (a-2) is preferably 50:50 to 80:20.
In one embodiment, the composition includes, as the aromatic polyether, an aromatic polyether formed with 4,4′-dichlorobenzophenone as a monomer component.
In one embodiment, the composition includes, as an aromatic polyether, an aromatic polyether formed with 4,4′-dichlorobenzophenone as a monomer component (hereinafter, referred to as “component (a-1′)”) and an aromatic polyether formed with 4,4′-difluorobenzophenone as a monomer component (hereinafter, referred to as “component (a-2′)”).
The mass ratio of the component (a-1′) and the component (a-2′) is preferably 1:99 to 100:0, 1:99 to 99:1, 21:79 to 99:1, 25:75 to 95:5, or 30:70 to 90:10, and more preferably 40:60 to 80:20. In one embodiment, the mass ratio of the component (a-1′) and the component (a-2′) is preferably 50:50 to 80:20.
In one embodiment, the structural unit represented by the formula (1) is disposed at one or more ends of the main chain of the aromatic polyether. In this instance, the terminal structure disposed to the structural unit may be a halogen atom. The halogen atom can be, for example, a chlorine atom (Cl) or a fluorine atom (F).
In one embodiment, the structural unit represented by formula (2) is disposed at one or more ends of the main chain of the aromatic polyether. In this instance, the terminal structure bonded to the structural unit may be, for example, a hydrogen atom (H) (when the terminal structure is the hydrogen atom (H), a hydroxyl group is formed with an oxygen atom (O) in the structural unit).
The terminal structure of the aromatic polyether may be, for example, a structure in which the above-described chlorine atom (Cl) or hydroxy group is replaced with the hydrogen atom (H) or the like. Note that, the terminal structure may have a structure other than those exemplified above.
In one embodiment, the aromatic polyether includes a repeating unit represented by the following formula (3):
The structural unit represented by the formula (3) is a linker of the structural unit represented by the formula (1) and the structural unit represented by the formula (2).
In one embodiment, the aromatic polyether does not include any structure other than the structural units represented by the formula (1) and the formula (2).
In one embodiment, the aromatic polyether includes structures other than the structural units represented by the formula (1) and the formula (2) as long as the effects of the present invention is not impaired.
In one embodiment, the total amount (% by mass) of the structural unit represented by the formula (1) and the structural unit represented by the formula (2), based on the total monomer subjected to the reaction, is 50% by mass or more, 60% by mass or more, 70% by mass or more, 80% by mass or more, 90% by mass or more, 95% by mass or more, 97% by mass or more, 99% by mass or more, 99.5% by mass or more, and it is 100% by mass or less, or 99.9% by mass or less, or 100% by mass.
In one embodiment, in the aromatic polyether, the molar ratio of the structural unit represented by the formula (1) and the structural unit represented by the formula (2) (the amount of the structural unit represented by the formula (1): the amount of the structural unit represented by the formula (2)) is 47.5:52.5 to 52.5:47.5, 48.0:52.0 to 52.0:48.0, 48.5:51.5 to 51.5:48.5, 49.0:51.0 to 51.0:49.0 or 49.5:50.5 to 50.5:49.5.
The number of moles of the structural unit represented by the formula (1) may be larger than, smaller than, or equal to the number of moles of the structural unit represented by the formula (2).
In one embodiment, an area ratio (hereinafter, referred to as “area ratio X”) of the peak attributed to 1H at the α-position of the hydroxyl group based on the peak attributed to 1H of the main chain is less than 0.1% in 1H-NMR determination of the aromatic polyether.
The area ratio X is a value obtained by measuring 1H-NMR described in the embodiment.
In one embodiment, the aromatic polyether is composed of one aromatic polyether having the same area ratio X.
In one embodiment, the aromatic polyether according to the present embodiment is a blend of two or more aromatic polyethers having an area ratio X differing from each other. The above-described area ratio X can then be achieved in 1H-NMR measurement of the mixtures. Here, the two or more aromatic polyethers may or may not include aromatic polyethers having an area ratio X of 0.1% or more.
The aromatic polyether having an area ratio X of 0.1% or more may have, for example, an area ratio X of 0.12% or more, or 0.14% or more, and may have an area ratio of 2.0% or less, 1.8% or less, or 1.6% or less. The area ratio X of the aromatic polyether having the area ratio X of 0.1% or more may be, for example, 0.10 to 2.0%, 0.12 to 1.8% or 0.14 to 1.6%.
In one embodiment, when 4,4′-dichlorobenzophenone and hydroquinone are used to synthesize the aromatic polyether, the above-described area ratio X can be less than 0.1% by increasing molar ratio of 4,4′-dichlorobenzophenone to hydroquinone greater than 1.00.
In one embodiment, when 4,4′-difluorobenzophenone and hydroquinone are used to synthesize the aromatic polyether, the above-described area ratio X can be less than 0.1% by increasing mol ratio of 4,4′-difluorobenzophenone to hydroquinone greater than 1.00.
The method for producing the aromatic polyether is not particularly limited.
In one embodiment, a method for producing the aromatic polyether includes producing the component (a-1′).
In one embodiment, a method for producing the aromatic polyether includes,
The method for producing the component (a-1′) is not particularly limited.
In one embodiment, the method for producing the component (a-1′) includes reacting 4,4′-dichlorobenzophenone with hydroquinone.
4,4′-Dichlorobenzophenone and hydroquinone are monomers for polymerizing the component (a-1′).
After the step of reacting 4,4′-dichlorobenzophenone and hydroquinone, as a copolymer of these compounds (monomeric units), the component (a-1′) can be obtained.
4,4′-dichlorobenzophenone and hydroquinone are also commercially available.
In the following description, the “reaction mixture” is a reaction system from the start of the reaction of 4,4′-dichlorobenzophenone with hydroquinone to the completion of the reaction, preferably in the form of a solution containing the solvent to be described later, in addition to these monomers. The composition of the reaction mixture may change as the reaction proceeds. Usually, as the reaction proceeds, the concentration of the reactants (4,4′-dichlorobenzophenone and hydroquinone) in the reaction mixture decreases and the concentration of the product (component (a-1′)) increases.
In addition, the “maximum temperature” of the reaction mixture is the maximum temperature (highest reachable temperature) reached by the reaction mixture in a process from the start of the reaction between 4,4′-dichlorobenzophenone and hydroquinone to the completion of the reaction.
In one embodiment, the maximum temperature of the reaction mixture may be 260° C. or more, 265° C. or more, 270° C. or more, 275° C. or more, 280° C. or more, 285° C. or more, 290° C. or more, more than 290° C., 295° C. or more, 300° C. or more, 305° C. or more, 310° C. or more, 315° C. or more, 320° C. or more, 325° C. or more, 330° C. or more, or 335° C. or more. The upper limit of the maximum temperature is not particularly limited, and may be, for example, 360° C. or less. In addition, the maximum temperature of the reaction mixture is, for example, 260 to 360° C., preferably more than 290° C. and 360° C. or less, and more preferably 295 to 360° C.
In one embodiment, the method for producing the component (a-1′) includes raising the temperature of the reaction mixture to 150° C. or higher, and then holding the temperature. A temperature at the time of the temperature holding is not particularly limited, and may be, for example, 150 to 360° C. The time period for which the temperature holding is performed is not particularly limited, and may be, for example, 0.1 to 12 hours.
In one embodiment, the method for producing the component (a-1′) includes raising the temperature of the reaction mixture to 150° C. or higher, and then raising the temperature and holding the temperature at one time, or repeating the raising and holding the temperature at a plurality of time. The number of times of repetition is not particularly limited, and may be, for example, 2, 3, 4, 5, 6, 7, 8, 9 or 10.
By repeating the temperature increase and the temperature holding a plurality of times, the reaction can be efficiently advanced.
In one embodiment, the method for producing the component (a-1′) includes holding the reaction mixture at 180 to 220° C. for 0.5 to 2 hours, preferably 0.6 to 1.8 hours, and more preferably 0.7 to 1.5 hours (hereinafter also referred to as “temperature holding (i)”). As a result, the reaction can be accelerated while suppressing the volatilization of the raw material, and the component (a-1′) having a higher molecular weight can be obtained.
In one embodiment, the method for producing the component (a-1′) includes holding the reaction mixture at 230 to 270° C. for 0.5 to 2 hours, preferably 0.6 to 1.8 hours, and more preferably 0.7 to 1.5 hours (hereinafter also referred to as “temperature holding (ii)”). As a result, the reaction can be accelerated while suppressing the volatilization of the raw material, and the component (a-1′) having a higher molecular weight can be obtained.
In one embodiment, the method for producing the component (a-1′) includes holding the reaction mixtures at 280 to 360° C. for 1 to 8 hours, preferably 1 to 6 hours, and more preferably 1 to 4 hours (hereinafter also referred to as “temperature holding (iii)”). As a result, the component (a-1′) having a desired molecular weight can be obtained.
In one embodiment, the method for producing the component (a-1′) may include two or three members selected from the group consisting of temperature holdings (i) to (iii) described above. It is preferable that the two or three temperature holdings are performed in order of the method of lowest holding temperature. During the two or three temperature holdings, the method may include increasing the temperature of the reaction mixture.
A rate of heating in raising the temperature of the reaction mixture is not particularly limited, and may be, for example, 0.1 to 15° C./min, 0.1 to 10° C./min, 0.1 to 8° C./min or 0.1 to 5° C./min. As a result, the reaction can be accelerated while suppressing the volatilization of the raw materials, and the component (a-1′) having a higher molecular weight can be obtained.
In one embodiment, in the method for producing the component (a-1′), the time from the point at which the temperature of the reactant reaches 150° C. to the point at which the maximum temperature is reached is 2.0 to 10 hours.
In one embodiment, the reaction mixture includes a solvent. The reaction mixture including the solvent may be in the form of a solution. The solution may include 4,4′-dichlorobenzophenone and hydroquinone dissolved in the solvent.
The solvent is not particularly limited, and for example, a neutral polar solvent may be used. Examples of neutral polar solvents include N,N-dimethylformamide, N,N-diethylformamide, N,N-dimethylacetamide, N,N-diethylacetamide, N,N-dipropylacetamide, N,N-dimethylbenzoic acid amide, N-methyl-2-pyrrolidone, N-ethyl-2-pyrrolidone, N-isopropyl-2-pyrrolidone, N-isobutyl-2-pyrrolidone, N-n-propyl-2-pyrrolidone, N-n-butyl-2-pyrrolidone, N-cyclohexyl-2-pyrrolidone, N-methyl-3-methyl-2-pyrrolidone, N-ethyl-3-methyl-2-pyrrolidone, N-methyl-3,4,5-trimethyl-2-pyrrolidone, N-methyl-2-piperidone, N-ethyl-2-piperidone, N-isopropyl-2-piperidone, N-methyl-6-methyl-2-piperidone, N-methyl-3-ethylpiperidone, dimethylsulfoxide, diethylsulfoxide, 1-methyl-1-oxosulfolane, 1-ethyl-1-oxosulfolane, 1-phenyl-1-oxosulfolane, N,N′-dimethylimidazolidinone, diphenylsulfone, and the like.
In one embodiment, the reaction mixture contains an aromatic sulfone, and the amount of solvent having a boiling point of 270 to 330° C. in the mixture is 0 parts by mass or more and less than 1 part by mass based on 100 parts by mass of the aromatic sulfone. Thus, it becomes easier to control a reaction temperature.
The reaction mixture may include one or two or more types of solvents. In particular, it is preferable that the reaction mixture include only one type of solvent (single solvent) as a solvent. Thus, the method for producing it can be simplified.
In one embodiment, the reacting mixture includes a base. By including the base in the reaction mixture, the reaction is accelerated.
The base is not particularly limited, and for example, an alkali metal salt or the like is preferable. The alkali metal salt is not particularly limited, and examples thereof include an alkali metal carbonate, an alkali metal bicarbonate, an alkali metal hydride, and an alkali metal hydroxide.
Examples of the alkali metal carbonate include potassium carbonate, sodium carbonate, lithium carbonate, rubidium carbonate, and cesium carbonate.
Examples of the alkali metal bicarbonate include lithium bicarbonate, sodium bicarbonate, potassium bicarbonate, rubidium bicarbonate, cesium bicarbonate, and the like.
Among these, potassium carbonate is particularly preferable.
These bases may be used alone, or two or more of them may be used in combination.
In one embodiment, the reaction mixture includes potassium carbonate.
In one embodiment, the reaction mixture includes other bases than potassium carbonate. These bases may be used in combination with the potassium carbonate. For example, the potassium carbonate and sodium carbonate may be used in combination.
The total concentration of bases in the reaction mixture is not particularly limited.
In one embodiment, the total blending amount of the bases in the reaction mixture is 100 parts by mole or more based on 100 parts by mole of hydroquinone to be blended in the reaction mixture, and 180 parts by mole or less, 160 parts by mole or less, 140 parts by mole or less, or 120 parts by mole or less. When the total blending amount of the base is 100 parts by mole or more, a reaction time can be shortened. When the total blending amount of the bases is 180 parts by mole or less, the formation of the gel component can be suppressed. In addition, the total amount of the bases in the reaction mixture is, for example, 100 to 180 parts by mole, preferably 100 to 140 parts by mole, and more preferably part by 100 to 120 parts by mole, based on 100 parts by mole of hydroquinone to be blended in the reaction mixture.
In one embodiment, potassium carbonate is blended as a base in the above-described blending amounts.
A molar ratio ([DCBP]: [HQ]) of 4,4′-dichlorobenzophenone (DCBP) to hydroquinone (HQ) to be subjected to the reaction is not particularly limited.
The molar ratio ([DCBP]: [HQ]) may be appropriately adjusted for the purpose of, for example, controlling the molecular weight of the component (a-1′) to be obtained.
In one embodiment, the molar ratio ([DCBP]: [HQ]) is 47.5:52.5 to 52.5:47.5, 48.0:52.0 to 52.0:48.0, 48.5:51.5 to 51.5:48.5, 49.0:51.0 to 51.0:49.0 or 49.5:50.5 to 50.5:49.5.
The number of moles of 4,4′-dichlorobenzophenone (DCBP) may be larger than, smaller than, or equal to the number of moles of hydroquinone (HQ).
In one embodiment, the total concentration of 4,4′-dicyclobenzofenone and hydroquinone in the reaction mixture (based on the blending amount) is not specifically limited, for example, it is 1.0 mol/l or more, 1.2 mol/l or more, 1.3 mol/l or more, 1.4 mol/l or more, or 1.5 mol/l or more, and it is 6.0 mol/l or less, 5.0 mol/l or less, or 4.0 mol/l or less, and the total concentration of 4,4′-dicyclobenzofenone and hydroquinone in the reaction mixture (based on the blending amount) is, for example, 1.0 to 6.0 mol/l, preferably 1.3 to 5.0 mol/l, and more preferably 1.5 to 4.0 mol/l.
In one embodiment, no monomer other than 4,4′-dichlorobenzophenone and hydroquinone is used as a monomer to be subjected to the above-described reaction.
In one embodiment, any monomer other than 4,4′-dichlorobenzophenone and hydroquinone is used in combination in the above-mentioned reaction as long as the effect of the present invention is not impaired.
In one embodiment, the total proportion (% by mass) of 4,4′-dichlorobenzophenone and hydroquinone is 50% by mass or more, 60% by mass or more, 70% by mass or more, 80% by mass or more, 90% by mass or more, 95% by mass or more, 97% by mass or more, 99% by mass or more, 99.5% by mass or more, or 100% by mass based on the total monomer to be subjected to the reaction.
In one embodiment, 70% by mass or more, 80% by mass or more, 90% by mass or more, 95% by mass or more, 99% by mass or more, 99.5% by mass or more, 99.9% by mass or more, or substantially 100% by mass of the reaction mixture at the time of the start of the reaction is formed of
When “substantially 100% by mass” of the mixture is formed of those materials, the mixture may contain an inevitable impurity.
The reaction between 4,4′-dichlorobenzophenone and hydroquinone can be performed in an inert gas atmosphere. The inert gas is not particularly limited, and examples thereof include nitrogen and an argon gas.
The method for producing the component (a-2′) is not particularly limited.
In one embodiment, the method for producing the component (a-2′) includes reacting 4,4′-difluorobenzophenone with hydroquinone.
The component (a-2′) can also be produced in the same manner as the method for producing the component (a-1′) described above, except that 4,4′-difluorobenzophenone is used instead of 4,4′-dichlorobenzophenone.
In one embodiment, the component (a-1′) is the component (a-1).
In one embodiment, the component (a-2′) is the component (a-2).
As the aromatic polyether, the component (a-1′) can be used alone, or a mixture of the component (a-1′) and the component (a-2′) can be used. When the mixture is used, the mixing ratio (mass ratio) of the component (a-1′) and the component (a-2′) can be adjusted to be the aromatic polyether in which the amount of chlorine atom to be bonded is 10 to 10,000 ppm.
The method of mixing the component (a-1′) and the component (a-2′) is not particularly limited, and examples thereof include mixing by a known mixer and melt-kneading by an extruder or the like. Specifically, for example, the component (a-1′) and the component (a-2′) can be heated to 360° C. to 440° C. and melted, and then kneaded by a twin-screw kneader or the like. At this time, the component (a-1′) and the component (a-2′) may be kneaded to obtain the aromatic polyether, and then the discontinuous carbon fiber may be kneaded with the aromatic polyether, or the component (a-1′), the component (a-2′), and the discontinuous carbon fiber may be kneaded together.
With respect to the mixing ratio of the component (a-1′) and the component (a-2′), by increasing the ratio of the component (a-1′), the amount of chlorine atom bonded to the aromatic polyether in the mixture (aromatic polyether) can be increased, and the amount of fluorine atom bonded to the aromatic polyether can be decreased.
In the present specification, a “discontinuous carbon fiber” means a carbon fiber having an average fiber length of 20 mm or less.
In one embodiment, the discontinuous carbon fibers are chopped strands. Thus, the strength of the composition is further improved.
In one embodiment, the composition can be a fiber composite material including the aromatic polyether as a matrix and the discontinuous carbon fiber as a reinforcing fiber. The fiber composite material may be a so-called fiber-reinforced thermoplastic (FRTP).
In one embodiment, the mean fiber length of the discontinuous carbon fibers is 0.5 to 20 mm, 0.5 to 10 mm, 1 to 7 mm or 2 to 6 mm. The average fiber length of the discontinuous carbon fiber is obtained by arithmetic average of values measured by calipers.
In one embodiment, the average fiber diameter of the discontinuous carbon fiber is 1 to 30 μm. From the viewpoint of dispersibility of the discontinuous carbon fiber to the aromatic polyether, surface smoothness of the molded article, and mechanical strength, the average fiber diameter of the discontinuous carbon fiber is preferably 3 to 25 μm, or 6 to 20 μm, and more preferably 6 to 13 μm. The average fiber diameter of the discontinuous carbon fiber is determined by an arithmetic average of the values measured in accordance with JIS R 7607:2000.
The discontinuous carbon fiber may be one treated with a sizing agent. By treating with a sizing agent, discontinuous carbon fiber can be united in a bundle. The discontinuous carbon fiber treated with the sizing agent has a sizing agent adhered to the surface thereof. The sizing agent is not particularly limited, and examples thereof include an epoxy-based sizing agent, a urethane-based sizing agent, and a polyamide-based sizing agent. As the sizing agent, an aromatic polyether can also be used. In addition, as the sizing agent, those sizing agents may be used alone, or two or more thereof may be used in combination. As the discontinuous carbon fiber, that is not treated with any sizing agent may be used. As the sizing agent, a silane coupling agent such as an aminosilane, an isocyanate silane and an acrylic silane may be used in combination.
The amount of the discontinuous carbon fiber in the composition is not particularly limited.
In one embodiment, the amount of the discontinuous carbon fiber is 5 parts by mass or more, 10 parts by mass or more, 20 parts by mass or more, 30 parts by mass or more, or 40 parts by mass or more, and it is 100 parts by mass or less, 90 parts by mass or less, 80 parts by mass or less, 70 parts by mass or less, 60 parts by mass or less, 55 parts by mass or less, or 50 parts by mass or less based on 100 parts by mass of the aromatic polyether. In one embodiment, the amount of the discontinuous carbon fiber is 5 to 100 parts by mass, 5 to 80 parts by mass, 5 to 60 parts by mass, 10 to 60 parts by mass, 20 to 55 parts by mass, 30 to 50 parts by mass, or 40 to 50 parts by mass based on 100 parts by mass of the aromatic polyether. When the amount of the discontinuous carbon fiber based on 100 parts by mass of the aromatic polyether is 5 parts by mass or more, the reinforcing effect by the discontinuous carbon fiber is more suitably obtained, and when the amount of the discontinuous carbon fiber is 100 parts by mass or less, or even 60 parts by mass or less, the suitability for kneading and forming the composition is further improved.
It may include components other than the aromatic polyether and the discontinuous carbon fiber. The other component is not particularly limited, and examples thereof include other resins that are not the aromatic polyether. Examples of the other resin include a fluororesin such as polytetrafluoroethylene. The other component may be used alone, or two or more types thereof may be used in combination.
In one embodiment, 50% by mass or more, 60% by mass or more, 70% by mass or more, 80% by mass or more, 90% by mass or more, 95% by mass or more, 97% by mass or more, 99% by mass or more, 99.5% by mass or more, and 100% by mass or less, 99.9% by mass or less, or substantially 100% by mass of the composition is formed of
In the case of “substantially 100% by mass” thereof, inevitable impurities may be included.
A method for producing the composition is not particularly limited, and examples thereof include mixing with a known mixer, and melting and kneading with an extruder or the like. The discontinuous carbon fiber may be side fed to the aromatic polyether using a twin-screw kneader.
A pellet of the composition may be produced. The pellet may be used as a raw material for producing a molded body.
In one embodiment, a method for producing the pellet includes that the aromatic polyether is added to the discontinuous carbon fiber after the discontinuous carbon fibers have been cut short into chopped strands. The pellet (also referred to as “short fiber pellet”) can be produced by mixing and granulating the short fiber and the aromatic polyether.
In one embodiment, a method for producing the pellet is to produce the pellet (also referred to as “long fiber pellet”) by immersion a roving of the discontinuous carbon fiber in a molten aromatic polyether, pultrusion, and then cutting into desired pellet lengths. When the long fiber pellet is produced as described above, breakage of the discontinuous carbon fiber can be suppressed.
The molding of the composition (that may be in the form of the above-described pellet) can produce a molded body. A known method, such as injection molding, extrusion molding and blow molding, may be used in the molding. In addition, the composition may be subjected to press molding, and a known method such as a cold pressing method and a hot pressing method may be used. Further, it may be performed that the composition is used as a resin composition for a 3D printer, and is molded with a 3D printer.
In one embodiment, the composition has a tensile strength of 2.80 times or more, more than 2.87 times, 2.88 times or more, 2.90 times or more, 2.95 times or more, or 3.00 times or more based on the tensile strength of the aromatic polyether alone. The upper limit of the rate (also referred to as “increase rate”) is not particularly limited, and it is, for example, 5.00 times or less, or 4.00 times or less. In one embodiment, the composition has a tensile strength of 2.80 to 5.00 times, 2.88 to 5.00 times or 2.95 to 4.00 times the tensile strength of the aromatic polyether alone. Further, in one embodiment, the composition has a tensile strength of 2.35 to 5.00 times, 2.45 to 4.00 times, 2.50 to 3.00 times or 2.50 to 2.75 times based on the tensile strength of the aromatic polyether alone.
The tensile strength of the composition and the tensile strength of the aromatic polyether alone are measured by the following methods.
The composition (or the aromatic polyether alone) are injection molded at 400° C. using a small molding machine (MiniJet-Pro, manufactured by Haake) to prepare a dumbbell-shaped 5A shape defined in ISO 527-2:2012, and used as a test piece.
The obtained test piece is subjected to a tensile test at a test rate of 5 mm/min and a chuck-to-chuck distance of 50 mm, and the tensile strength is measured.
To prepare for the tensile test, align the upper and lower chucks of the tensile testing machine with the position of the specified chuck-to-chuck distance (50 mm), hold the test piece with the lower chuck, and load 0 point is adjusted. Thereafter, the test piece is held by the upper chuck, and the tensile test is started.
In one embodiment, the tensile strength of the composition is 270 MPa or more, 280 MPa or more, 290 MPa or more, 300MPa or more, 310 MPa or more, 320 MPa or more, 350 MPa or less, or 330 MPa or more. The upper limit is not particularly limited, and it is, for example, 500 MPa or less, or 400 MPa or less. In one embodiment, the tensile strength is 270 to 500 MPa, 290 to 400 MPa or 300 to 350 MPa. In one embodiment, the tensile strength is 230.0 to 400.0 MPa, 235.0 to 350.0 MPa, 240.0 to 300.0 MPa or 250.0 to 300.0 MPa.
The application of the composition of the present invention is not particularly limited, and can be widely applied to various applications requiring strength, for example. For example, the composition of the present disclosure is suitable for applications requiring heat resistance, solvent resistance and durability. More specifically, the present invention is suitable for, for example, bearings, gaskets, structural materials, and the like.
A composition according to a second aspect of the present invention includes an aromatic polyether including the structural unit represented by the formula (1) and the structural unit represented by the formula (2), wherein the amount of the total chlorine (Cl-3) in the aromatic polyether is 10 to 10,000 ppm by mass, and
According to the second aspect, the same effects as those of the first aspect can be obtained.
A composition according to a third aspect of the present invention includes an aromatic polyether including the structural unit represented by the formula (1) and the structural unit represented by the formula (2), wherein the proportion of the amount of the total chlorine (Cl-3) in the aromatic polyether (also referred to as “proportion (Cl/(Cl+F))”) based on the total amount of the amount of the total chlorine (Cl-3) in formula polyether and the amount of the total fluorine (F-3) in the aromatic polyether is 40 to 100% by mass, and
According to the third aspect, the same effects as those of the first aspect can be obtained.
In the third aspect, the proportion (Cl/(Cl+F) is preferably 40 to 100% by mass, or 50 to 95% by mass, and more preferably 60 to 85% by mass. In one embodiment, the proportion (Cl/(Cl+F)) is preferably 70 to 85% by mass.
In the second aspect and the third aspect, the amount of the total chlorine in the aromatic polyether (Cl-3) is preferably 100 to 10,000 ppm by mass, and the amount of the total fluorine in the aromatic polyether (F-3) is preferably 100 to 2,000 ppm by mass. Thus, the effects of the present invention can be better exhibited. The amount of the total chlorine in the aromatic polyether (Cl-3) and the amount of the total fluorine in the aromatic polyether (F-3) are not limited to the ranges exemplified here, and the ranges exemplified for the composition according to the first aspect can be appropriately applied.
With respect to the composition according to the second aspect and the third aspect, the description of the composition according to the first aspect is incorporated. However, the composition according to the second aspect and the third aspect is not limited to the composition according to the first aspect (for example, a composition includes an aromatic polyether including a structural unit represented by the formula (1) and a structural unit represented by the formula (2), wherein the amount of chlorine atom bonded is 10 to 10,000 ppm, and a discontinuous carbon fibers). The composition according to the present invention may satisfy any two or more of the conditions of the first aspect, the second aspect and the third aspect. For example, a composition satisfying both the conditions of the first aspect and the second aspect, a composition satisfying both the conditions of the first aspect and the third aspect, a composition satisfying both the conditions of the second aspect and the third aspect, and a composition satisfying among the conditions of the first aspect, the second aspect, and the third aspect can be given.
Examples of the present invention are described below, but the present invention is not limited by these Examples.
4,4′-dichlorobenzophenone 41.220 g (0.164 mol), hydroquinone 17.809 g (0.162 mol), potassium carbonate 25.704 g (0.186 mol), and diphenylsulfone 140.01 g were placed in a 300 ml four-port flask of equipped with a stirrer, a thermometer, a nitrogen inlet tube, and a water receive container connected to a cooler tube, and nitrogen gas was allowed to flow.
The reaction mixture was subjected to a reaction under the following temperature control.
After completion of the reaction, the product was ground in a blender (7010HS manufactured by Waring), washed with acetone and water in this order, and then dried in a dryer at 180° C. to obtain a powdery aromatic polyether.
The obtained aromatic polyether was used as an aromatic polyether (A-1).
A commercially available aromatic polyether (151G, manufactured by Victrex) was used as aromatic polyether (A-2).
An aromatic polyether (A-1), an aromatic polyether (A-2), and a discontinuous carbon fiber (manufactured by Mitsubishi Chemical, carbon fiber chopped fiber TR06U B4E, average fiber diameter: 7 μm, average fiber length 6 mm) were kneaded at 400° C. using a twin-screw kneader (Thermo Fisher Co., Ltd., Process11) at a mass ratio (A-1: A-2: discontinuous carbon fiber) of 20:80:43 to obtain a composite including an aromatic polyether (A-1), an aromatic polyether (A-2), and a discontinuous carbon fiber.
The resulting composition was injection molded at 400° C. using a small molding machine (MiniJet-Pro, manufactured by Haake), to prepare a dumbbell-like 5A shape defined in ISO 527-2:2012 and was used as a test piece.
The obtained test piece was subjected to a tensile test at a test rate of 5 mm/min and a chuck-to-chuck distance of 50 mm, and the tensile strength (also referred to as “reinforced tensile strength”) was measured.
In order to prepare for the tensile test, the upper and lower chucks of the tensile testing machine were adjusted to position of the specified chuck-to-chuck distance (50 mm), the test piece was held by the lower chuck, and the load 0 point was adjusted. Thereafter, the test piece was held by the upper chuck, and the tensile test was started.
Also, the tensile strength (also referred to as “neat tensile strength”) of the aromatic polyether (A) alone (neat) without any blending discontinuous carbon fibers was measured in the same manner as described above.
Further, the increase rate of the reinforced product tensile strength based on the neat tensile strength (also referred to as “reinforced product/neat increase rate”) was calculated.
The amount of chlorine atom (Cl-1) bonded to the aromatic polyether, the amount of chlorine atom contained as free components in the aromatic polyether (Cl-2, also referred to as “amount of inorganic chlorine”) and the total amount of these chlorine atoms (Cl-3, also referred to as “amount of the total chlorine in the aromatic polyether”) were determined by the following methods. The amount of fluorine atom (F-1) bonded to the aromatic polyether, the amount of fluorine atom contained as a free component in the aromatic polyether (F-2, also referred to as “amount of inorganic fluorine”) and the total amount of these fluorine atom (F-3, also referred to as “amount of the total fluorine in the aromatic polyether”) were also measured. Additionally, the amount of potassium atom and the amount of sodium atom contained as free components in the aromatic polyether were determined.
A sample (aromatic polyether) was introduced into a combustion furnace, combusted in a combustion gas containing oxygen, and the generated gas is collected in an absorbent liquid, and then the absorbent liquid was separated and quantified by ion chromatography. The quantitative values were each determined based on a calibration curve produced from a reference having a known concentration. Measurement conditions were described below.
Each amount of potassium atom (K) and sodium atom (Na) in the aromatic polyether pretreated with the following manner is measured at 589.592 nm for Na and 766.481 nm for K by ICP emission spectroscopy.
The sample 1 g was into the platinum dish, concentrated sulfuric acid is added to the dish, heated to carbonization treatment, and then the platinum dish is placed in an electric oven for ashing treatment at 550° C. for 12 hours.
After the ashing treatment, hydrochloric acid is added, and then heat treatment is performed. After cooling, ultrapure water is added thereto to make a constant volume. When the sample contains an inorganic filler (discontinuous carbon fiber), hydrofluoric acid is added after the ashing treatment, and then heated and dried treatment is conducted, hydrochloric acid is added after cooling, and heat treatment is performed. After cooling, ultrapure water is added thereto to make a constant volume.
The quantitative values are each determined based on a calibration curve produced from a reference having a known concentration. The calibration curve solution shall be the same as the hydrochloric acid concentration of the sample solution.
It should be noted that “−” in Table 1 indicates 6 ppm by mass or less with respect to the above measured values.
In view of the possibility that 4,4′-difluorobenzophenone or 4,4′-dichlorobenzophenone, which was the monomer (reactant) used in the synthesis, remained in the aromatic polyether, the amount of fluorine atom contained in the aromatic polyether as 4,4′-difluorobenzophenone and the amount of chlorine atom contained in the aromatic polyether as 4,4′-dichlorobenzophenone were determined by the following methods.
First, a solid-state sample (aromatic polyether) was ground in a blender, washed with acetone and water in this order, and dried in an explosion-proof dryer at 180° C. When a reaction mixture (product) immediately after a reaction for the production of the aromatic polyether was used as a sample, the product was cooled and solidified after the completion of the reaction to be used as the solid sample. The blender used is not particularly limited, and a 7010HS manufactured by Waring was used here.
Then, the dried sample 1 g was weighed in an eggplant flask, and cyclohexanone 100 ml and boiling stone were added thereto, and the mixture was heated to reflux for an hour with a mantle heater, allowed to cool to room temperature, and the solid content was removed by filtration.
The obtained solutions were then measured by gas chromatography to calculate the amount (ppm by mass) of 4,4′-difluorobenzophenone and the amount (ppm by mass) of 4,4′-dichlorobenzophenone in the sample. Here, the amount (ppm by mass) of 4,4′-difluorobenzophenone and the amount (ppm by mass) of 4,4′-dichlorobenzophenone in the sample were determined based on a calibration curve prepared from a reference of a known concentration. Measurement conditions of gas chromatograph are described below.
The amount of fluorine atom (ppm by mass) contained as 4,4′-difluorobenzophenone and the amount of chlorine atom (ppm by mass) contained as 4,4′-dichlorobenzophenone in the aromatic polyether were converted from the following calculation formula.
The amount of fluorine atom (ppm by mass) contained in the aromatic polyether as 4,4′-difluorobenzophenone=the amount of 4,4′-difluorobenzophenone in the sample (ppm by mass)/218.20 (molecular weight of 4,4′-difluorobenzophenone)×19.00 (atomic weight of fluorine)×2
The amount of chlorine atom (ppm by mass) contained in the aromatic polyether as 4,4′-dichlorobenzophenone=the amount of 4,4′-dichlorobenzophenone in the sample (ppm by mass)/251.11 (molecular weight of 4,4′-dichlorobenzophenone)×35.45 (atomic weight of chlorine)×2
As a result of the above supplementary studies, it was confirmed that because the amount of fluorine atom (ppm by mass) contained in the aromatic polyether as 4,4′-difluorobenzophenone and the amount of chlorine atom (ppm by mass) contained in the aromatic polyether as 4,4′-dichlorobenzophenone were both less than 100 ppm by mass which is the lower limit of quantitation, the calculation result of the amount of chlorine atom (Cl-1) bonded to aromatic polyether and the amount of fluorine atom (F-1) bonded to the aromatic polyether described above was not affected.
Also, the proportion of the amount of the total chlorine (Cl-3) in the aromatic polyether based on the total amount of the amount of the total chlorine (Cl-3) in the aromatic polyether and the amount of the total fluorine (F-3) in the aromatic polyether (“proportion (Cl/(Cl+F))”) was calculated from the amount of the total chlorine (Cl-3) in the aromatic polyether and the amount of the total fluorine (F-3) in the aromatic polyether.
The Aromatic polyether was subjected to 1H-NMR measurement, and the ratio (area ratio X) of the area of the peak at the α-position of the hydroxyl group (area from the chemical shift 6.98 ppm to 7.03 ppm) to the area of the main chain peak (area from the chemical shift 7.32 ppm to 7.36 ppm) was determined from the following equation.
Measurement conditions for 1H-NMR measurement are as follows.
The above results are shown in Table 1.
The composition was obtained in the same manner as in Example 1, except that the aromatic polyethers (A-1) and (A-2) as the aromatic polyether (A) were blended at a mass ratio (A-1: A-2) of 40:60 and then used. The obtained composition was measured in the same manner as in Example 1. The results are shown in Table 1.
The composition was obtained in the same manner as in Example 1, except that the aromatic polyethers (A-1) and (A-2) as the aromatic polyether (A) were blended at a mass ratio (A-1: A-2) of 60:40 and then used. The obtained composition was measured in the same manner as in Example 1. The results are shown in Table 1.
The composition was obtained in the same manner as in Example 1, except that the aromatic polyethers (A-1) and (A-2) as the aromatic polyether (A) were blended at a mass ratio (A-1: A-2) of 80:20 and then used. The obtained composition was measured in the same manner as in Example 1. The results are shown in Table 1.
The composition was obtained in the same manner as in Example 1, except that the aromatic polyethers (A-1) and (A-2) as the aromatic polyether (A) were blended at a mass ratio (A-1: A-2) of 100:0 (the aromatic polyether (A-2) was omitted) and then used. The obtained composition was measured in the same manner as in Example 1. The results are shown in Table 1.
The composition was obtained in the same manner as in Example 1, except that the aromatic polyethers (A-1) and (A-2) as the aromatic polyether (A) were blended at a mass ratio (A-1: A-2) of 0:100 (the aromatic polyether (A-1) was omitted) and then used. The obtained composition was measured in the same manner as in Example 1. The results are shown in Table 1.
Although only some exemplary embodiments and/or examples of this invention have been described in detail above, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments and/or examples without materially departing from the novel teachings and advantages of this invention. Accordingly, all such modifications are intended to be included within the scope of this invention.
The documents described in the specification and the specification of Japanese application(s) on the basis of which the present application claims Paris convention priority are incorporated herein by reference in its entirety.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2022-160842 | Oct 2022 | JP | national |
| 2022-193076 | Dec 2022 | JP | national |
| 2023-054193 | Mar 2023 | JP | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2023/035361 | 9/28/2023 | WO |
