Claims
- 1. A process for the production of a poly(arylene thioether-ketone-ketone) copolymer comprising (A) at least one poly(arylene thioether-ketone-ketone) segment and (B) at least one poly(arylene thioether) segment, which comprises at least the following three steps:
- i) heating in the presence of water an organic amide solvent containing a dihalogenated aromatic compound, which consists principally of a dihalobenzene, and an alkali metal sulfide, whereby a poly(arylene thioether) oligomer having at least 50 wt. % recurring units of the formula ##STR26## and at least one terminal thiolate group is synthesized, ii) heating in the presence of water an organic amide solvent containing a dihalogenated aromatic compound, which consists principally of at least one bis(halobenzoyl)benzene, and an alkali metal sulfide, whereby a poly(arylene thioether-ketone-ketone) oligomer having at least 50 wt. % recurring units of the formula ##STR27## and terminal halogen atoms is synthesized, and iii) mixing and reacting the poly(arylene thioether) oligomer, which has been obtained in the step i), with poly(arylene thioether-ketone-ketone) oligomer obtained in the step ii) and optionally, water;
- said first through third steps i)-iii) being conducted under the following conditions (a)-(g):
- (a) in the first step i), the ratio of the water content to the amount of the charged organic amide solvent being 0.1-15 (mol/kg), the ratio of the amount of the charged dihalogenated aromatic compound to the amount of the charged alkali metal sulfide being 0.3-0.9 (mol/mol), and the polymerization being conducted in such a manner that the weight-average molecular weight of the resulting poly(arylene thioether) oligomer having at least one terminal thiolate group becomes at least 200 but lower than 1000,
- (b) in the second step ii), the ratio of the water content to the amount of the charged organic amide solvent being controlled within a range of 0.1-15 (mol/kg) and the reaction being conducted within a temperature range of 60.degree.-300.degree. C. with the proviso that the reaction time at 210.degree. C. and higher is not longer than 10 hours,
- (c) in the third step iii), the ratio of the water content to the amount of the charged organic amide solvent being 0.1-15 (mol/kg),
- (d) in the third step iii), the ratio of the total amount of the charged dihalogenated aromatic compound, said total amount being the amount of the whole dihalogenated aromatic compounds including the dihalobenzene and the bis(halobenzoyl)benzene, to the total amount of the charged alkali metal sulfide, said latter total amount being the total amount of the alkali metal sulfide charged in the first step i) and that charged in the second step ii), being controlled within a range of 0.95-1.2 (mol/mol),
- (e) the ratio of the charged amount of the dihalogenated aromatic compound consisting principally of the dihalobenzene in the step i) to the charged amount of the dihalogenated aromatic compound consisting principally of the bis(halobenzoyl)benzene in the step ii) being controlled within a range of 0.25-26 (mol/mol),
- (f) the reaction of the third step iii) being conducted within a temperature range of 150.degree.-300.degree. C. with the proviso that the reaction time at 210.degree. C. and higher is not longer than 10 hours, and
- (g) in the third step iii), the reaction being conducted until the melt viscosity of the resulting copolymer becomes 2-100,000 poises as measured at 380.degree. C. and a shear rate of 1,200/sec.
- 2. The process as claimed in claim 1, wherein the segment (A) has at least 50 wt. % recurring units of the formula ##STR28## and the segment (B) has at least 50 wt. % recurring units of the formula ##STR29##
- 3. The process as claimed in claim 1, wherein the segment (A) has at least 50 wt. % recurring units of the formula ##STR30## and the segment (B) has at least 50 wt. % recurring units of the formula ##STR31##
- 4. The process as claimed in claim 1, wherein in each of the steps i) through iii), the reaction is conducted in a reactor at least a portion of which, said portion being brought into contact with the reaction mixture, is made of a corrosion-resistant material.
- 5. The process as claimed in claim 4, wherein the corrosion-resistant material is a titanium material.
- 6. The process as claimed in claim 1, wherein the organic amide solvent is at least one pyrrolidone selected from N-methylpyrrolidone and N-ethylpyrrolidone.
- 7. The process as claimed in claim 1, wherein at least 50 wt. % of the resulting copolymer is in the form of granules recoverable on a sieve having an opening size of 75 .mu.m.
Priority Claims (2)
Number |
Date |
Country |
Kind |
109482 |
Apr 1990 |
JPX |
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67550 |
Mar 1991 |
JPX |
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Parent Case Info
This application is a division of application Ser. No. 07/686,980 filed Apr. 18, 1991, now U.S. Pat. No. 5,250,636.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
3919177 |
Campbell |
Nov 1975 |
|
4772679 |
Fukawa et al. |
Sep 1988 |
|
4960555 |
Satake et al. |
Oct 1990 |
|
Foreign Referenced Citations (9)
Number |
Date |
Country |
22938 |
May 1982 |
JPX |
5100 |
Feb 1984 |
JPX |
58435 |
Apr 1985 |
JPX |
104126 |
Jun 1985 |
JPX |
120720 |
Jun 1985 |
JPX |
197634 |
Sep 1986 |
JPX |
200127 |
Sep 1986 |
JPX |
27434 |
Feb 1987 |
JPX |
124 |
Jan 1989 |
JPX |
Non-Patent Literature Citations (1)
Entry |
P. C. Dawson, et al. "X-ray Data for Poly(aryl ether ketones)" Polymer Reports, POLYMER, 1980, vol. 21 (May 1980) pp. 577-578. |
Divisions (1)
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Number |
Date |
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Parent |
686980 |
Apr 1991 |
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