Patent Application
20180282657
The presently disclosed subject matter relates generally to a formulation for lubricating a conveyor belt used in beverage packaging and methods of lubricating a conveyor belt.
Conveyors used in food packaging and beverage factories are required to transport corresponding vessels. Beverage factories have also started using recycled water from bottle washers for treatment of the conveyor track. These conveyors are often conveyor belts and chain conveyors that may need adequate lubrication which does not interfere with performance or quality of the products. Recycled water can be from pre-final rinse bottle wash tanks where the water is recovered using sand filtration, disinfection, activated carbon filtration, de-aeration and sodium ion exchange to remove alkalinity. Some plants may use reverse osmosis techniques to remove sodium hydroxide. De-alkalized water is then mixed with fresh water to provide the required demand. The ratio of both water qualities varies as well as the levels of potential process critical anions like sulfates or phosphates (carried over from bottle washing detergents) and therefore some plants do not consider this recycled water for conveyor treatment. Also, current lubricant compositions often have problems with anion tolerance in recycled water and/or performance issues, furthering the decision to not use this recycled water for conveyors.
Specifically, lubricants may form precipitates when exposed to recycled water that contains high levels of anions, such as sulfate and phosphate. Lubricants can also have free fatty acids, which can degrade floor grout in a factory. Further, lubricants may be unstable in the presence of preferred isothiazolinone types of non-oxidizing biocides.
Sustainability has been gaining more prominence and it is expected that all beverage plants will implement a water recycling plant as several prominent beverage plants have already started using recycled water. Thus, a lubricant formulation that could overcome all of the above-mentioned limitations would offer an improved lubricant formulation that would be very beneficial for use with conveyor belts and chain conveyors. The presently disclosed matter offers an anion tolerant lubricant which has improved lubrication performance.
The presently disclosed subject matter is directed to a lubricant composition including 65 wt % to 95 wt % water, 1 wt % to 25 wt % of at least one amphoteric surfactant, 1 wt % to 10 wt % of at least one anionic surfactant and 0.5 wt % to 10 wt % of at least one non-ionic surfactant.
In some embodiments, the presently disclosed subject matter is directed to a system for applying a lubricant to a conveyor belt. The system may be a container with a lubricant composition including 65 wt % to 95 wt % water, 1 wt % to 25 wt % of at least one amphoteric surfactant, 1 wt % to 10 wt % of at least one anionic surfactant and 0.5 wt % to 10 wt % of at least one non-ionic surfactant; and a device to dispense the lubricant composition from the container to the conveyor belt.
In some embodiments, the presently disclosed subject matter is directed to a method of lubricating a conveyor belt. The method may include applying a lubricant composition including 65 wt % to 95 wt % water, 1 wt % to 25 wt % of at least one amphoteric surfactant, 1 wt % to 10 wt % of at least one anionic surfactant and 0.5 wt % to 10 wt % of at least one non-ionic surfactant to a conveyor belt where recycled water with anions may be in contact with the conveyor belt and the lubricant composition may have a coefficient of friction of less than 0.3 when lubricating the conveyor belt.
In some embodiments, a method of lubricating a conveyor belt may include applying a lubricant composition with 65 wt % to 95 wt % water, 2 wt % to 5 wt % of N-coco, 1,3-diaminopropane, 0.5 wt % to 10 wt % of N-lauroyl sarcosinic acid sodium salt, 0.5 wt % to 5 wt % of at least one non-ionic surfactant, 0.5 wt % to 5 wt % of a buffer, and 0.5 wt % to 3 wt % of a phosphate ester to a conveyor belt where recycled water with anions may be in contact with the conveyor belt. The lubricant composition may have a coefficient of friction of less than 0.3 when lubricating the conveyor belt.
The presently disclosed subject matter is directed to a lubricant composition including 65 wt % to 95 wt % water, 1 wt % to 25 wt % of at least one amphoteric surfactant, 2 wt % to 5 wt % of N-coco, 1,3-diaminopropane, 1 wt % to 5 wt % of at least one buffer and 0.2 wt % to 5 wt % of at least one additive.
In some embodiments, the presently disclosed subject matter is directed to a system for applying a lubricant to a conveyor belt. The system may be a container with a lubricant composition including 65 wt % to 95 wt % water, 1 wt % to 25 wt % of at least one amphoteric surfactant, 2 wt % to 5 wt % of N-coco, 1,3-diaminopropane, 1 wt % to 5 wt % of at least one buffer and 0.2 wt % to 5 wt % of at least one additive; and a device to dispense the lubricant composition from the container to the conveyor belt.
In some embodiments, the presently disclosed subject matter is directed to a method of lubricating a conveyor belt. The method may include applying a lubricant composition including 65 wt % to 95 wt % water, 1 wt % to 25 wt % of at least one amphoteric surfactant, 2 wt % to 5 wt % of N-coco, 1,3-diaminopropane, 1 wt % to 5 wt % of at least one buffer and 0.2 wt % to 5 wt % of at least one additive to a conveyor belt where recycled water with anions may be in contact with the conveyor belt. The lubricant composition may have a coefficient of friction of less than 0.3 when lubricating the conveyor belt.
The presently disclosed subject matter is directed to a lubricant composition including 65 wt % to 95 wt % water, 0.5 wt % to 15 wt % of at least one cationic surfactant, 2 wt % to 5 wt % of at least one non-ionic surfactant, 1 wt % to 5 wt % of at least one buffer and 0.2 wt % to 5 wt % of at least one additive.
In some embodiments, the presently disclosed subject matter is directed to a system for applying a lubricant to a conveyor belt. The system may be a container with a lubricant composition including 65 wt % to 95 wt % water, 0.5 wt % to 15 wt % of at least one cationic surfactant, 2 wt % to 5 wt % of at least one non-ionic surfactant, 1 wt % to 5 wt % of at least one buffer and 0.2 wt % to 5 wt % of at least one additive and a device to dispense the lubricant composition from the container to the conveyor belt.
In some embodiments, the presently disclosed subject matter is directed to a method of lubricating a conveyor belt. The method may include applying a lubricant composition including 65 wt % to 95 wt % water, 0.5 wt % to 15 wt % of at least one cationic surfactant, 2 wt % to 5 wt % of at least one non-ionic surfactant, 1 wt % to 5 wt % of at least one buffer and 0.2 wt % to 5 wt % of at least one additive to a conveyor belt where recycled water with anions is in contact with the conveyor belt. The lubricant composition may have a coefficient of friction of less than 0.3 when lubricating the conveyor belt.
The presently disclosed subject matter is directed to a lubricant composition. The lubricant composition may include water, at least one amphoteric surfactant, at least one anionic surfactant, and at least one non-ionic surfactant.
While the following terms are believed to be well understood by one of ordinary skill in the art, the following definitions are set forth to facilitate explanation of the presently disclosed subject matter.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood to one of ordinary skill in the art to which the presently disclosed subject matter belongs.
Following long standing patent law convention, the terms “a”, “an”, and “the” refer to “one or more” when used in the subject application, including the claims. Thus, for example, reference to “a composition” includes a plurality of such compositions, and so forth.
Unless indicated otherwise, all numbers expressing quantities of components, reaction conditions, and so forth used in the specification and claims are to be understood as being modified in all instances by the term “about.” Accordingly, unless indicated to the contrary, the numerical parameters set forth in the instant specification and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by the presently disclosed subject matter.
As used herein, the term “about”, when referring to a value or to an amount of mass, weight, time, volume, concentration, percentage, and the like can encompass variations of, and in some embodiments, ±20%, in some embodiments ±10%, in some embodiments ±5%, in some embodiments ±1%, in some embodiments ±0.5%, and in some embodiments ±0.1%, from the specified amount, as such variations are appropriated in the disclosed formulation, system and methods.
As used herein, the term “additive” refers to any substance, chemical, compound or formulation that is added to an initial substance, chemical, compound or formulation in a smaller amount than the initial substance, chemical, compound or formulation to provide additional properties or to change the properties of the initial substance, chemical, compound or formulation.
As used herein, the term “perfume” refers to any odoriferous material or any material which acts as a malodor counteractant. In general, such materials are characterized by a vapor pressure greater than atmospheric pressure at ambient temperatures. The perfume may also be referred to as a fragrance, odorant, essential oil, cologne or eau de toilette.
As used herein, the term “preservative” refers to any chemical or compound that prevents degradation or breakdown of a compound, composition or formulation. A preservative also prevents decomposition by microbial growth or undesirable chemical changes of a compound, composition or formulation during storage or use.
As used herein, the term “antimicrobial” refers to any chemical or compound that kills or inhibits the growth of microorganisms.
As used herein, the term “buffer” refers to any chemical, compound, or solution that is used to control the pH of a composition, formulation, system or solution. A “buffer system” refers to any composition or system where there are two or more components that are used to control the pH of a composition, formulation, system, or solution, such as an acid and a base. The components are any chemical, compound, formulation or solution.
As used herein, the term “recycled water” refers to any water that has been used more than once. Recycled water is inclusive of water that has been treated such as waste water, wash water or rinse water that is treated to remove solids and impurities. Recycled water can have anions, such as, for example sulfates and phosphates.
All compositional percentages used herein are presented on a “by weight” basis, unless designated otherwise.
Although the majority of the above definitions are substantially as understood by those of skill in the art, one or more of the above definitions can be defined hereinabove in a manner differing from the meaning as ordinarily understood by those of skill in the art, due to the particular description herein of the presently disclosed subject matter.
The presently disclosed composition is directed to a lubricant composition. The lubricant composition may be comprised of water, at least one amphoteric surfactant, at least one anionic surfactant and at least one non-ionic surfactant. In some embodiments, the lubricant composition may be comprised of water, at least one amphoteric surfactant, N-coco, 1,3-diaminopropane, at least one buffer and at least one additive. In other embodiments, the lubricant composition may be comprised of water, at least one cationic surfactant, at least one non-ionic surfactant, at least one buffer and at least one additive.
The lubricant composition may include a liquid medium. The liquid medium may be water. The water may be sterile water, deionized water, demineralized water, distilled water, soft water, hard water, recycled water or any combination thereof. The lubricant composition may have 50 wt % water, 55 wt % water, 60 wt % water, 65 wt % water, 70 wt % water, 74 wt % water, 75 wt % water, 80 wt % water, 81 wt % water, 82 wt % water, 83 wt % water, 84 wt % water, 85 wt % water, 86 wt % water, 87 wt % water, 88 wt % water, 89 wt % water, 90 wt % water, 90.85 wt % water, 91 wt % water, 94 wt % water, 95 wt % water or any range between any of these values. In some embodiments, the lubricant composition may include 65 wt % to 95 wt % water. In other embodiments, the lubricant composition may include 91 wt % water. In further embodiments, the lubricant composition may include 94 wt % water. In some embodiments, the lubricant composition may include 89.62 wt % water. In some embodiments, the lubricant composition may include 80.5 wt % water. In some embodiments, the lubricant composition may include 82 wt % water. In some embodiments, the lubricant composition may include 86.2 wt % water. In some embodiments, the lubricant composition may include 87.7 wt % water. In other embodiments, the lubricant composition may include 93.74 wt % water.
The lubricant composition may include at least one amphoteric surfactant. The at least one amphoteric surfactant may be a dipropionate, a monopropionate, an amino betaine, an amido betaine, their salts and combinations thereof. In some embodiments, the at least one amphoteric surfactant may be β-alanine, N-(2-carboxyethyl)N-tallow alkyl derivative or β-alanine, N-(2-carboxyethyl)N-(2-ethylhexyl) monosodium salt. In further embodiments, the at least one amphoteric surfactant may be alkyl (C8) amino dipropionate monosodium salt and cocamidopropyl betaine.
In some embodiments, the lubricant composition may include 1 wt % of at least one amphoteric surfactant, 1.8 wt % of at least one amphoteric surfactant, 2 wt % of at least one amphoteric surfactant, 2.5 wt % of at least one amphoteric surfactant, 2.8 wt % of at least one amphoteric surfactant, 3 wt % of at least one amphoteric surfactant, 4.6 wt % of at least one amphoteric surfactant, 5 wt % of at least one amphoteric surfactant, 6 wt % of at least one amphoteric surfactant, 7.5 wt % of at least one amphoteric surfactant, 10 wt % of at least one amphoteric surfactant, 12.5 wt % of at least one amphoteric surfactant, 13.5 wt % of at least one amphoteric surfactant, 15 wt % of at least one amphoteric surfactant, 16.5 wt % of at least one amphoteric surfactant, 18 wt % of at least one amphoteric surfactant, 19.5 wt % of at least one amphoteric surfactant, 20 wt % of at least one amphoteric surfactant, 21.5 wt % of at least one amphoteric surfactant, 23 wt % of at least one amphoteric surfactant, 25 wt % of at least one amphoteric surfactant or any range between any of these values. In other embodiments, the lubricant composition may include 2 wt % to 25 wt % of at least one amphoteric surfactant. In further embodiments, the lubricant composition may include 1.2 wt % β-alanine, N-(2-carboxyethyl)N-(2-ethylhexyl) monosodium salt and 4.95 wt % β-alanine, N-(2-carboxyethyl)N-tallow alkyl derivative. In further embodiments, the lubricant composition may include 3 wt % β-alanine, N-(2-carboxyethyl)N-(2-ethylhexyl) monosodium salt and 16.5 wt % β-alanine, N-(2-carboxyethyl)N-tallow alkyl derivative. In some embodiments, the at least one amphoteric surfactant may include 1 wt % alkyl (C8) amino dipropionate monosodium salt and 1.8 wt % cocamidopropyl betaine. In other embodiments, the at least one amphoteric surfactant may include 4.6 wt % N-oleyl-1,3-diaminopropane.
The lubricant composition may include at least one anionic surfactant. The at least one anionic surfactant may be an N-acyl-sarcosinate, an alkylethercarboxylate, an alkane sulphonate, an alkyl sulfate, an alkyl sulphonate, an alkyl ether sulfate, a branched alkyl benzene sulphonate, a linear alkyl benzene sulphonate, their salts and combinations thereof. In some embodiments, the at least one anionic surfactant may be N-lauroyl sarcosinic acid sodium salt.
In some embodiments, the lubricant composition may include 1 wt % of at least one anionic surfactant, 1.5 wt % of at least one anionic surfactant, 2 wt % of at least one anionic surfactant, 3 wt % of at least one anionic surfactant, 4 wt % of at least one anionic surfactant, 5 wt % of at least one anionic surfactant, 6 wt % of at least one anionic surfactant, 7 wt % of at least one anionic surfactant, 8 wt % of at least one anionic surfactant, 9 wt % of at least one anionic surfactant, 10 wt % of at least one anionic surfactant, 11 wt % of at least one anionic surfactant, 12 wt % of at least one anionic surfactant, 15 wt % of at least one anionic surfactant or any range between any of these values. In other embodiments, the lubricant composition may include 2 wt % to 10 wt % of at least one anionic surfactant. In further embodiments, the lubricant composition may include 5 wt % of at least one anionic surfactant. The lubricant composition may include 1.5 wt % N-lauroyl sarcosinic acid sodium salt. The lubricant composition may include 0.9 wt % N-lauroyl sarcosinic acid sodium salt.
The lubricant composition may include at least one non-ionic surfactant. The at least one non-ionic surfactant may be a fatty alcohol polyglycoside, a linear alcohol ethoxylate, a branched alcohol ethoxylate, an alkyl phenol ethoxylate, cetyl alcohol, an alcohol alkoxylate and combinations thereof. In some embodiments, the at least one non-ionic surfactant may be an alcohol alkoxylate. In some embodiments, the at least one non-ionic surfactant may be an alcohol ethoxylate.
In some embodiments, the lubricant composition may include 0.5 wt % of at least one non-ionic surfactant, 1 wt % of at least one non-ionic surfactant, 1.5 wt % of at least one non-ionic surfactant, 2 wt % of at least one non-ionic surfactant, 2.5 wt % of at least one non-ionic surfactant, 3 wt % of at least one non-ionic surfactant, 3.5 wt % of at least one non-ionic surfactant, 4 wt % of at least one non-ionic surfactant, 4.5 wt % of at least one non-ionic surfactant, 5 wt % of at least one non-ionic surfactant or any range between any of these values. In other embodiments, the lubricant composition may include 0.5 wt % to 10 wt % of at least one non-ionic surfactant. The lubricant composition may include 1 wt % alcohol alkoxylate. The lubricant composition may include 1.5 wt % alcohol alkoxylate. The lubricant composition may include 4.0 wt % alcohol ethoxylate. The lubricant composition may include 4.0 wt % alcohol (C13) ethoxylate (12EO).
The lubricant composition may include at least one cationic surfactant. The at least one cationic surfactant may be a diaminopropane, a fatty-alkyl amine, their salts and combinations thereof. In some embodiments, the at least one cationic surfactant may be N-coco, 1,3-diaminopropane. In some embodiments, the at least one cationic surfactant may be N,N-bis(3-aminopropyl) dodecylamine. In some embodiments, the at least one cationic surfactant may be a diamine. In other embodiments, the at least one cationic surfactant may be a diamine and an alkylamine. The diamine may be N-coco-1,3-diaminopropane. The alkylamine may be N-oleyl-1,3-diaminopropane. The diamine may be N-coco-1,3-diaminopropane and N-oleyl-1,3-diaminopropane. The alkylamine may be N,N-bis (3-aminopropyl) dodecylamine. In some embodiments, the at least one cationic surfactant may be N,N-bis(3-aminopropyl) dodecylamine and N-oleyl-1,3-diaminopropane. The cationic surfactant may also provide biocidal properties. If the cationic surfactant is N,N-bis(3-aminopropyl) dodecylamine it may act as a biocide.
In some embodiments, the lubricant composition may include 0.5 wt % of at least one cationic surfactant, 1 wt % of at least one cationic surfactant, 1.5 wt % of at least one cationic surfactant, 2 wt % of at least one cationic surfactant, 3 wt % of at least one cationic surfactant, 4 wt % of at least one cationic surfactant, 5 wt % of at least one cationic surfactant, 10 wt % of at least one cationic surfactant, 15 wt % of at least one cationic surfactant or any range between any of these values. In other embodiments, the lubricant composition may include 3 wt % of at least one cationic surfactant. In further embodiments, the lubricant composition may include 0.5 wt % to 15 wt % of at least one cationic surfactant. The lubricant composition may include 2.8 wt % N-coco, 1,3-diaminopropane. The lubricant composition may include 2.8 wt % N-oleyl-1,3-diaminopropane. In some embodiments, the lubricant composition may include 4.6 wt % N-coco, 1,3-diaminopropane. In other embodiments, the lubricant composition may include 1.5 wt % N,N-bis(3-aminopropyl) dodecylamine. In other embodiments, the lubricant composition may include 4.6 wt % N,N-bis(3-aminopropyl) dodecylamine. In further embodiments, the lubricant composition may include 4.6 wt % N-oleyl-1,3-diaminopropane.
The lubricant composition may have at least one additive. In some embodiments, the lubricant composition may include 0.021 wt % of at least one additive, 0.04 wt % of at least one additive, 0.05 wt % of at least one additive, 0.07 wt % of at least one additive, 0.1 wt % of at least one additive, 0.2 wt % of at least one additive, 0.25 wt % of at least one additive, 0.5 wt % of at least one additive, 0.7 wt % of at least one additive, 1 wt % of at least one additive, 1.5 wt % of at least one additive, 2 wt % of at least one additive, 4.2 wt % of at least one additive, 5 wt % of at least one additive or any range between any of these values. In other embodiments, the lubricant composition may include 0.061 wt % of at least one additive. In further embodiments, the lubricant composition may include 1.6 wt % of at least one additive. The at least one additive may be an antimicrobial, a biocide, a buffer, a chelating agent, a colorant, a perfume, a preservative, a phosphate ester, a solvent and combinations thereof.
In some embodiments, the lubricant composition may have at least one buffer. The additive may be a buffer. In some embodiments, the buffer may be a carboxylic acid, such as, for example acetic acid, glycolic acid, formic acid and combinations thereof. In some embodiments, the carboxylic acid may be acetic acid. The lubricant composition may include 0.5 wt % of a buffer, 0.6 wt % of a buffer, 0.7 wt % of a buffer, 0.8 wt % of a buffer, 0.9 wt % of a buffer, 1 wt % of a buffer, 1.5 wt % of a buffer, 1.98 wt % of a buffer, 2 wt % of a buffer, 2.5 wt % of a buffer, 2.7 wt % of a buffer, 3 wt % of a buffer, 3.2 wt % of a buffer, 5 wt % of a buffer or any range between any of these values. In a preferred embodiment, the lubricant composition may include 0.9 wt % acetic acid. In other embodiments, the lubricant composition may include 1.98 wt % acetic acid. In further embodiments, the lubricant composition may include 2.7 wt % acetic acid.
The additive may also be at least one chelating agent. In some embodiments, the at least one chelating agent may be diethylene triamine pentaacetic acid, ethylenediaminetetraacetate, diethylene triamine penta (methylene phosphonic) acid, ethylene diamine tetra (methylene phosphonic) acid, ethylene diamine disuccinic acid, 1-hydroxyethane-1,1-diphosphonic acid (HEDP), methylglycine diacetic acid (MGDA), nitrilotriacetic acid, their salts and combinations thereof.
The additive may also be at least one perfume. The perfume may provide an odor or fragrance that is appealable to a person or neutralize odors of a composition or of a product that may come in contact with the composition. The perfume may be any natural or synthetic perfume that is well known. For example, in some embodiments, the perfume may be a flower or herbal fragrance, such as rose extract, violet extract, and/or lavender extract; a fruit fragrance, such as lemon, lime, and/or orange; synthetic perfumes, such as musk ketone, musk xylol, aurantiol, and/or ethyl vanillin. The perfume may be from a wide variety of chemicals, such as aldehydes, ketones, esters, and the like.
The additive may be at least one preservative or antimicrobial. In some embodiments, the at least one preservative or antimicrobial may be a carbamate, a quaternary ammonium compound, an alkyl amine, an isothiazoline and combinations thereof. The isothiazoline may be benzylisothiazolinone, 5-chloroisothiazolinone, methylisothiazolinone and combinations thereof. In other embodiments, the preservative may be 1,2-benzisothiazolin-3-one sodium salt and 3-iodo-2-propynyl butyl carbamate. The lubricant composition may include 0.021 wt % of at least one preservative, 0.025 wt % of at least one preservative, 0.04 wt % of at least one preservative, 0.05 wt % of at least one preservative, 0.07 wt % of at least one preservative, 0.1 wt % of at least one preservative, 0.2 wt % of at least one preservative, 0.27 wt % of at least one preservative, 0.3 wt % of at least one preservative, 0.4 wt % of at least one preservative, 0.5 wt % of at least one preservative or any range between any of these values. In a preferred embodiment, the lubricant composition may include 0.04 wt % wt % 1,2-benzisothiazolin-3-one sodium salt and 0.021 wt % 3-iodo-2-propynyl butyl carbamate.
The additive may also be a phosphate ester. The lubricant composition may include 0.5 wt % of a phosphate ester, 0.6 wt % of a phosphate ester, 0.7 wt % of a phosphate ester, 0.8 wt % of a phosphate ester, 0.9 wt % of a phosphate ester, 1 wt % of a phosphate ester, 1.5 wt % of a phosphate ester, 2 wt % of a phosphate ester, 3 wt % of a phosphate ester or any range between any of these values. In some embodiments, the phosphate ester may be tributoxyethyl phosphate. In a preferred embodiment, the lubricant composition may include 0.7 wt % tributoxyethyl phosphate. In some embodiments, the lubricant composition may include 1 wt % tributoxyethyl phosphate.
The additive may also be at least one solvent. In some embodiments, the at least one solvent may be water, polyethylene glycol, alcohol, ether, polyether and combinations thereof. In other embodiments, the solvent may be water.
In some embodiments, the lubricant composition may include 90.85 wt % water, 1.2 wt % β-alanine, N-(2-carboxyethyl)N-(2-ethylhexyl) monosodium salt, 4.95 wt % β-alanine, N-(2-carboxyethyl)N-tallow alkyl derivative, 1.5 wt % N-lauroyl sarcosinic acid sodium salt, 1.5 wt % alcohol alkoxylate. In other embodiments the lubricant composition may include 90.85 wt % water, 1.2 wt % β-alanine, N-(2-carboxyethyl)N-(2-ethylhexyl) monosodium salt, 4.95 wt % β-alanine, N-(2-carboxyethyl)N-tallow alkyl derivative, 1.5 wt % N-lauroyl sarcosinic acid sodium salt, 1.5 wt % alcohol alkoxylate, 0.04 wt % 1,2-benzisothiazolin-3-one sodium salt and 0.021 wt % 3-iodo-2-propynyl butyl carbamate. In some embodiments, the percentage of water in the lubricant composition may be based upon a water dilution needed to have a total weight percent of 100 for the lubricant composition.
In some embodiments, the lubricant composition may include 89.62 wt % water, 4.6 wt % N-coco, 1,3-diaminopropane, 1.8 wt % cocamidopropyl betaine, 1 wt % alkyl (C8) amino dipropionate monosodium salt, 1.98 wt % acetic acid and 1 wt % tributoxyethyl phosphate.
In some embodiments, the lubricant composition may include 86.2 wt % water, 2.7 wt % acetic acid, 4.6 wt % N-oleyl-1,3-diaminopropane, 4.0 wt % alcohol (C13) ethoxylate (12EO), 1.5 wt % N,N-bis(3-aminopropyl)dodecylamine and 1 wt % tributoxyethyl phosphate. In other embodiments, the lubricant composition may include 87.7 wt % water, 2.7 wt % acetic acid, 4.6 wt % N-oleyl-1,3-diaminopropane, 4.0 wt % alcohol (C13) ethoxylate (12EO) and 1 wt % tributoxyethyl phosphate.
The disclosed lubricant composition may be used in a system for applying a lubricant to a conveyor belt. The system may include a container with a lubricant composition as described previously. The system may also include a device to dispense the lubricant composition from the container to the conveyor belt. In some embodiments, the system may be attached to the conveyor belt. In other embodiments, the system may not be attached to the conveyor belt.
The system may be used for lubricating and cleaning of feed and conveyors in the food industry and the beverage industry. The system may be used for any bottle and/or can conveyors well known in the art. The bottles and/or cans may be made from metal, glass, paper, cardboard, plastic and combinations thereof. In some embodiments, the bottles and/or cans may include glass, polyethylene terephthalate (PET), polyethylene naphthalate (PEN) or polycarbonate (PC), boxes, crates, metal cans, vessels, refillable cans, barrels or vessels, such as KEGs, beverage containers, paper and cardboard holders and the like.
The container may be of any shape. For example, the container may be in the shape of a circle, a diamond, an oval, a square, a rectangle, a pentagon, a hexagon, a heptagon, an octagon or combinations thereof. The device to dispense the lubricant may include a dispensing nozzle. In some embodiments, the dispensing nozzle may be connected to the container. In other embodiments, the dispensing nozzle may not be connected to the container. The lubricant may be pumped from the container and dispensed from the nozzle.
A method of lubricating a conveyor belt may include applying a lubricant composition as described above to a conveyor belt. The lubricant composition may be applied as dry, semi-dry or wet lubricant.
In some embodiments, a lubricant composition may include 65 wt % to 95 wt % water, 1 wt % to 25 wt % of at least one amphoteric surfactant, 1 wt % to 10 wt % of at least one anionic surfactant and 0.5 wt % to 10 wt % of at least one non-ionic surfactant. In a preferred embodiment, the lubricant composition may include 91 wt % water, 1.2 wt % β-alanine, N-(2-carboxyethyl)N-(2-ethylhexyl) monosodium salt, 5 wt % β-alanine, N-(2-carboxyethyl)N-tallow alkyl derivative, 1.5 wt % N-lauroyl sarcosinic acid sodium salt, 1.5 wt % alcohol alkoxylate. In some embodiments, the lubricant composition may include 91 wt % water, 1.2 wt % β-alanine, N-(2-carboxyethyl)N-(2-ethylhexyl) monosodium salt, 5 wt % β-alanine, N-(2-carboxyethyl)N-tallow alkyl derivative, 1.5 wt % N-lauroyl sarcosinic acid sodium salt, 1.5 wt % alcohol alkoxylate, 0.04 wt % 1,2-benzisothiazolin-3-one sodium salt and 0.021 wt % 3-iodo-2-propynyl butyl carbamate.
In other embodiments, the lubricant composition may include 65 wt % to 95 wt % water, 2 wt % to 5 wt % N-coco, 1,3-diaminopropane, 0.5 wt % to 10 wt % N-lauroyl sarcosinic acid sodium salt, 0.5 wt % to 5 wt % of at least one non-ionic surfactant, 0.5 wt % to 5 wt % of a buffer; and 0.5 wt % to 3 wt % of a phosphate ester. The non-ionic surfactant may be alcohol alkoxylate. The phosphate ester may be tributoxyethyl phosphate. In a preferred embodiment, the lubricant composition may include 93.7 wt % water, 2.8 wt % N-coco, 1,3-diaminopropane, 0.9 wt % N-lauroyl sarcosinic acid sodium salt, 1 wt % alcohol alkoxylate, 0.9 wt % acetic acid and 0.7 wt % tributoxyethyl phosphate.
In some embodiments, a lubricant composition may include 65 wt % to 95 wt % water, 1 wt % to 25 wt % of at least one amphoteric surfactant, 1 wt % to 5 wt % of at least one buffer and 0.2 wt % to 5 wt % of at least one additive. In a preferred embodiment, the lubricant composition may include 89.62 wt % water, 4.6 wt % N-coco, 1,3-diaminopropane, 1.8 wt % cocamidopropyl betaine, 1 wt % alkyl (C8) amino dipropionate monosodium salt, 1.98 wt % acetic acid and 1 wt % tributoxyethyl phosphate.
In some embodiments, a lubricant composition may include 65 wt % to 95 wt % water, 0.5 wt % to 15 wt % of at least one cationic surfactant, 2 wt % to 5 wt % of at least one non-ionic surfactant, 1 wt % to 5 wt % of at least one buffer and 0.2 wt % to 5 wt % of at least one additive. In a preferred embodiment, the lubricant composition may include 80.5 wt % water, 2.7 wt % acetic acid, 4.6 wt % N-oleyl-1,3-diaminopropane, 4.0 wt % alcohol (C13) ethoxylate (12EO), 1 wt % tributoxyethyl phosphate and 1.5 wt % N,N-bis (3-aminopropyl) dodecylamine. In a preferred embodiment, the lubricant composition may include 82 wt % water, 2.7 wt % acetic acid, 4.6 wt % N-oleyl-1,3-diaminopropane, 4.0 wt % alcohol (C13) ethoxylate (12EO) and 1 wt % tributoxyethyl phosphate. In a preferred embodiment, the lubricant composition may include 86.2 wt % water, 2.7 wt % acetic acid, 4.6 wt % N-oleyl-1,3-diaminopropane, 4.0 wt % alcohol (C13) ethoxylate (12EO), 1.5 wt % N,N-bis(3-aminopropyl)dodecylamine and 1 wt % tributoxyethyl phosphate. In a preferred embodiment, the lubricant composition may include 87.7 wt % water, 2.7 wt % acetic acid, 4.6 wt % N-oleyl-1,3-diaminopropane, 4.0 wt % alcohol (C13) ethoxylate (12EO) and 1 wt % tributoxyethyl phosphate.
The conveyor belt may be in contact with recycled water with anions. In some embodiments, a method of lubricating a conveyor belt may include applying the lubricant composition as described previously to the conveyor belt where recycled water with anions is in contact with the conveyor belt. In other embodiments, the method may also include a lubricant composition as described previously having a coefficient of friction of less than 0.3 when lubricating the conveyor belt.
Lubricant formulations often show decreased water compatibility when contacted with recycled water with high levels of anions. Water compatibility is commonly measured by turbidity measurements given in Formazin Nephelometric Units (FNU). Values below 10 FNU are considered clear and can be accepted as water compatible. Low turbidity measurements (<10 FNU) over a prolonged period of time are indicators of anion tolerance of a lubricant composition. Low turbidity measurements indicate minimal precipitate formation during use of the lubricant composition.
Another indicator of lubricant performance is the coefficient of friction (μ). A low coefficient of friction sustained over a prolonged period of time indicates the lubricant has good performance. In some embodiments, the lubricant composition may have a coefficient of friction of less than 0.3 when lubricating the conveyor belt. In other embodiments, the lubricant composition may have a coefficient of friction of less than 0.2 when lubricating the conveyor belt. In further embodiments, the lubricant composition may have a coefficient of friction of about 0.1 to about 0.16 when lubricating the conveyor belt.
The lubricant composition may be continuously applied onto the conveyor belt. In some embodiments, the lubricant composition may not be continuously applied onto the conveyor belt. The lubricant composition may be intermittently applied onto the conveyor belt. In some embodiments, the lubricant composition may be applied to the conveyor belt during an application time and is not applied to the conveyor belt during a non-application time. The ratio of application time to non-application time may be between a ratio of 1:0 to 1:100. The ratio of application time to non-application time may be between a ratio of 1:5 to 1:60. In some embodiments, the ratio of application time to non-application time may be a ratio of 1:0, a ratio of 1:1, a ratio of 1:2, a ratio of 1:3, a ratio of 1:4, a ratio of 1:5, a ratio of 1:6, a ratio of 1:7, a ratio of 1:10, a ratio of 1:15, a ratio of 1:20, a ratio of 1:25, a ratio of 1:30, a ratio of 1:40, a ratio of 1:50, a ratio of 1:60, a ratio of 1:70, a ratio of 1:80, a ratio of 1:90, a ratio of 1:100 or any range between any of these values. In other embodiments, the ratio of application time to non-application time may be a ratio of 100:1, a ratio of 90:1, a ratio of 80:1, a ratio of 70:1, a ratio of 60:1, a ratio of 50:1, a ratio of 40:1, a ratio of 30:1, a ratio of 25:1, a ratio of 20:1, a ratio of 15:1, a ratio of 10:1, a ratio of 5:1, a ratio of 4:1, a ratio of 3:1, a ratio of 2:1, a ratio of 1:1, or any range between any of these values. In some embodiments, the ratio of application time to non-application time may be a ratio of 1:5. In other embodiments, the ratio of application time to non-application time may be a ratio of 1:6. In some embodiments, the ratio of application time to non-application time may be a ratio of 1:60.
These applications are for illustrative purposes only and are not intended as a limitation on the scope of the presently disclosed subject matter.
The presently disclosed subject matter provides a lubricant composition and system for lubricating a conveyor belt. A method of lubricating a conveyor belt when recycled water is present is also disclosed.
The disclosed lubricant composition exhibits anion tolerance when used with recycled water containing high levels of phosphates and/or sulfates.
The disclosed lubricant composition can be diluted with recycled water and maintain water compatibility (low turbidity). Additionally, biocidal performance of the composition can be improved by blending with non-oxidizing biocides, such as, for example benzisothiazolinone and/or methylisothiazolinone. The lubricant composition also has good performance with coefficient of friction values less than 0.3.
Although several advantages of the disclosed system are set forth in detail herein, the list is by no means limiting. Particularly, one of ordinary skill in the art would recognize that there can be several advantages to the disclosed system and methods that are not included herein.
The following Examples provide illustrative embodiments. In light of the present disclosure and the general level of skill in the art, those of ordinary skill in the art will appreciate that the following Examples are intended to be exemplary only and that numerous changes, modifications, and alterations can be employed without departing from the scope of the presently disclosed subject matter.
With amine-based lubricants, there is an unfavorable and unpredictable interaction between ions in the water. It is important to test the clear solubility of a lubricant over 5 days with the water quality when introducing a new lubricant to a lubrication system. A lubricant composition, sample 1, was prepared with the following composition seen in Table 1.
For some of the chemicals, the raw materials are in a diluted solution of water. The raw material of β-alanine, N-(2-carboxyethyl)N-tallow alkyl derivative was diluted in water and was 30% active. 16.5 wt % of the 30% active diluted solution of β-alanine, N-(2-carboxyethyl)N-tallow alkyl derivative was added, and resulted in a final weight percent in the final lubricant composition of 4.95 wt % β-alanine, N-(2-carboxyethyl)N-tallow alkyl derivative. Similarly, the raw material of β-alanine, N-(2-carboxyethyl)N-(2-ethylhexyl) monosodium salt was diluted in water and was 40% active. 3 wt % of the 40% active diluted solution of β-alanine, N-(2-carboxyethyl)N-(2-ethylhexyl) monosodium salt was added, and resulted in a final weight percent in the final lubricant composition of 1.2%. N-lauroyl sarcosinic acid sodium salt was diluted in water and was 30% active. 5 wt % of the 30% active solution of N-lauroyl sarcosinic acid sodium salt was added, and resulted in a final weight percent in the final lubricant composition of 1.5 wt % N-lauroyl sarcosinic acid sodium salt.
In order to simulate conditions similar to recycled water with high levels of anions, 2 ASTM water compositions were prepared with 2 different phosphate additions as shown in Table 2 (ASTM 2 has 50 ppm phosphate and ASTM 3 has 100 ppm phosphate).
Sample 1 was compared to reference samples: samples 2 and 3. Sample 2 is a dipropionate-based lubricant that does not contain sarcosinic acid sodium salt or alcohol alkoxylate and sample 3 is a standard diamine based lubricant.
The results for the lubricant composition, sample 1, as compared against a blank, sample 2 and sample 3 for the ASTM 2 water composition are shown in
The results for samples 1-3 are shown in
In conclusion, the lubricant composition of sample 1 had the lowest turbidity levels when compared to sample 2 and sample 3. Sample 1 had turbidity measurements less than the blank ASTM 2 sample as shown in
Sample 1 was tested for water compatibility and phosphate tolerance at varying degrees of water hardness and phosphate levels. Sample 1 was tested for turbidity measurements in deionized water with 100 ppm sulfate, 2° dH hard water with 100 ppm sulfate, 4.3° dH hard water with 100 ppm sulfate, deionized water with 200 ppm sulfate, 2° dH hard water with 200 ppm sulfate, and 4.3° dH hard water with 200 ppm sulfate. As shown in
In conclusion, sample 1 is water tolerant at varying degrees of water hardness and with high levels of anions and would be applicable for use in conveyor belts with recycled water containing high levels of anions.
Performance trials were done on a pilot conveyor for 3 different lubricant compositions (Samples 1-3 from Example 2) at 2 different concentrations (0.5% and 1.0%) for each sample. 8 aluminum beverage cans were tested on a stainless steel track against different dilutions of different lubricant compositions. The lubricant compositions were provided continuously with a spray nozzle of around 6 liters/hour volume flow. Sample 3 was used as a benchmark lubricant as it performs well in this environment. As shown in
In conclusion, sample 1 has a lubrication performance similar to sample 3, which was used as a benchmark in the performance testing. A 1.0% composition for sample 1 resulted in improved performance over the 0.5% concentration.
A commonly known issue of synthetic lubricants used in soft drink conveyor lines centers around the reaction of acidic drinks and their ingredients like phosphoric acid with the amine, and the black soiling deposits, which are unsightly, can have a performance issue especially on can seamer transfer plates (brown staining).
Performance trials were performed in the presence of Coca-Cola spillage on aluminum beverage cans during conveyance on the pilot conveyor. The Coca-Cola spillage was provided by a peristaltic pump with a range of 0.1 to 500 ml/min. The Coca-Cola spillage was applied with a hose pipe at the lubricant spray nozzle dripping directly on the top of the conveyor track. Sample 1 and sample 3 lubricant compositions were compared in the presence of the Coca-Cola spillage. Each composition was started with 0.5% dilutions and after 15 minutes, Coca-Cola was added at a flow rate of 11 ml/min. At 25 minutes, the Coca-Cola spillage was applied at a rate of 100 ml/min. As seen in
In conclusion, the sample 1 lubricant composition does not show an increase in COF when beverage spillage is introduced both at a low rate of 11 ml/min and a higher rate of 100 ml/min. The sample 1 lubricant composition outperforms the sample 3 lubricant composition at both rates of beverage spillage and would offer superior performance during lubrication of a beverage conveyor with beverage spillage.
Testing was completed to understand the effect of lubrication and water compatibility of sample 1 by replacing the amphoteric surfactant of the composition of sample 1 with various diamines. Comparison testing of two similar lubricant compositions (sample 4 and sample 5) was performed to determine if exchanging diamine quality would result in improved lubrication performance. The diamine, N-oley, 1,3-diaminopropane, was replaced with N-coco, 1,3-diaminopropane and the compositions are shown below in Table 2.
Performance trials with returnable glass bottle (RGB) on a stainless steel track were done on a pilot conveyor to check for lubricity performance as determined by COF values. Lubricant dilutions at 0.6% in deionized water were tested under semi-dry conditions (lubricants dosed for 16 seconds which is equal to one turn of the conveyor track). The lubricant is dosed again when the COF increases. Each test was started up by a 2 minute dosing of lubricant dilution.
As shown in
Two different lubricant formulations (sample 4 and sample 5 as discussed in Example 5) were further tested to determine if exchanging the diamine quality of N-oley, 1,3-diaminopropane with N-coco, 1,3-diaminopropane would offer better water compatibility. Each sample was tested at 3 different user concentrations (0.3%, 0.6%, 0.9%) with water having 5 different sulfate concentrations in deionized water (50 ppm, 75 ppm, 100 ppm, 150 ppm, 200 ppm) at 1 hour and 24 hour time points. The results are shown in Table 3 and Table 4 below.
At both time points and each user concentration, sample 5 had significantly lower turbidity values at all concentrations of sulfate. At the 1 hour time point, the highest turbidity value was 8.6 FNU for Sample 5 at 0.9% and 200 ppm sulfate. Sample 4, however, had a turbidity value of 150 FNU at 0.9% and 200 ppm sulfate. At the 24 hour time point, sample 5 had a turbidity value of 12.5 FNU at 0.9% and 200 ppm. Sample 4, however, had a significantly higher turbidity value of 468 FNU at 0.9 and 200 ppm sulfate.
Another comparison test was performed to further analyze the water compatibility of both sample 5 and sample 4 with ASTM water containing 200 ppm sulfate. Both samples were evaluated at 1 hour and 24 hour time points at 3 different user concentrations (0.3%, 0.6%, 0.9%). The water composition is shown in Table 5 and the results are shown in Table 6.
The results show that ASTM water with 200 ppm sulfate produced lower values of turbidity for both samples. Overall, sample 5 had lower turbidity values than sample 4 at every time point for all user concentrations even after 24 hrs. This indicates sample 5 had better tolerance for anions.
Using the diamine quality with N-coco, 1,3-diaminopropane resulted in improved water compatibility with lower turbidity values over time at 0.3%, 0.6% and 0.9% user concentrations with ASTM water containing 200 ppm sulfate.
The lubricant formulation of Sample 1, as discussed in Example 1, was further tested in a real world soft water (1.8 ppm CaCO3 hardness) that also had high levels of anions (sulfates >200 ppm, and phosphates <1.5 ppm). The water and sample 1 were tested for turbidity levels over 5 days and results are shown in
In conclusion, sample 1 had very low turbidity levels that were all less than 1 FNU over the 5 day testing period. Sample 1 provides excellent water compatibility over a 5 day time period even with the presence of high levels of anions in the water.
The water compatibility of different dipropionates (ß-Alanine-N-(2-carboxyethyl), N-Coco alkyl derivative (Dipropionate 1); ß-Alanine, N-(2-carboxyethyl)N-tallow alkyl derivate (Dipropionate 2); ß-Alanine, N-(2-carboxyethyl)N-(2-ethylhexyl) monosodium salt) (Dipropionate 3) were tested with four different water composition containing high level phosphates or high level sulfates (ASTM 1: water with 10 ppm phosphate, ASTM 2: water with 50 ppm phosphate, ASTM 3: water with 100 ppm phosphate, ASTM 4: water with 250 ppm sulfate, and ASTM 5: water with 500 ppm sulfate). The results are shown in Tables 7, 8, 9, 10 and 11.
The tested dipropionates had a different behavior in the presence of high levels of anions, like phosphates and sulfates. Dipropionate 2 was not compatible with the phosphates and sulfates, as at day 2, the dilutions with ASTM 1 (Table 7), ASTM 2 (Table 8), ASTM 3 (Table 9) and ASTM 5 (Table 11) were precipitating (>40 FNU) and with ASTM 4 (Table 10) the solution precipitated at day 3. Dipropionate 1 was compatible with high levels of sulfates as seen in Tables 10 and 11 (at day 5, turbidity <2 FNU) and not with high levels of phosphates as seen in Tables 7-8 (at day 3, turbidity >20 FNU) and seen in Table 9 (at day 2, turbidity >18 FNU). After 5 days, the turbidity of all dilutions with all of the different ASTM waters was below 1 FNU for Dipropionate 3. Thus, Dipropionate 3 showed the best results with excellent water compatibility for both tested anions. In conclusion, these results show that there is variation within the different raw materials, specifically dipropionates.
Formulations containing different alcohol alkoxylate surfactants or no alcohol alkoxylate surfactants were tested for water compatibility at a user concentration of 0.5 wt %. The testing water was ASTM 3 (high levels of phosphate), the water composition is given in Table 2.
As shown in
The above mentioned examples of the invention demonstrate excellent tolerance against anions, particularly against phosphates and sulfates while having good lubrication performance. These results were further shown on challenging combinations like aluminum cans on stainless steel transfer plates under beverage spilling conditions.
It is further noticed that the excellent tolerance against anions does not depend on the presence of water hardness which is important for dilution with recycled water. Recycled water is softened water containing high levels of critical anions like phosphates or sulfates. The use of recycled water with the disclosed lubricant compositions does not have the risk of blocked distribution spray nozzles because there will be little to no precipitation formed by interaction of the disclosed lubricant compositions and critical anions.
A lubricant composition, sample 14, was prepared with the following composition seen in Table 12.
For some of the chemicals, the raw materials were in a diluted solution of water. The raw material of N-coco, 1,3-diaminopropane was diluted in water and was 92% active. 5.0 wt % of the 92% active diluted solution of N-coco, 1,3-diaminopropane was added and resulted in a final weight percent in the final lubricant composition of 4.6 wt % N-coco, 1,3-diaminopropane. Similarly, the raw material of acetic acid was diluted in water and was 60% active. 3.2 wt % of the 60% active diluted solution of acetic acid was added, and resulted in a final weight percent in the final lubricant composition of 1.98%. Tributoxyethyl phosphate was not diluted in water and was 100% active. The final lubricant composition had 1.0 wt % of the 100% active solution of tributoxyethyl phosphate. Cocamidopropyl betaine was diluted in water and was 30% active. 6.0 wt % of the 30% active solution of cocamidopropyl betaine was added, and resulted in a final weight percent in the final lubricant composition of 1.8 wt % cocamidopropyl betaine. Alkyl (C8) amino dipropionate mono Na-salt was diluted in water and was 40% active. 2.5 wt % of the 40% active solution of alkyl (C8) amino dipropionate mono Na-salt was added, and resulted in a final weight percent in the final lubricant composition of 1.0 wt % alkyl (C8) amino dipropionate mono Na-salt.
Sample 14 was prepared to try and meet the demands of non-optimal production lines that required a higher lubricant concentration of previous lubricants. The new formulation of sample 14 would allow for the same lubrication performance at the low lubricant concentration (0.6%) on these non-optimal production lines without the need to increase the lubricant concentration. Performance trials with returnable glass bottle (RGB) on a stainless steel track were done on a pilot conveyor to check for lubricity performance as determined by COF values. Lubricant dilutions at 0.6% in deionized water were tested under semi-dry conditions (lubricants dosed for 16 seconds which is equal to one turn of the conveyor track). The lubricant was dosed again when the COF increased. Each test was started up by a 2 minute dosing of lubricant dilution.
As shown in
A performance trial for sample 14 was done at a bottling facility that used recycled water combined with soft water to dilute conveyor lubricants. The water had a pH of 7.50-8.90 and had sulfates present. Sample 14 was tested at 0.50% to 0.55% lubricant concentration for a 6-day period on a returnable glass bottle line that was divided into 10 zones with fan jet nozzles. There were a total of 225 nozzles on the line with a nozzle on-time percent of 40%. The bottles used on the conveyor belt were 200 ml and 300 ml bottles of carbonated soft drinks.
A lubricant composition, sample 15, was prepared with the following composition seen in Table 13.
For some of the chemicals, the raw materials were in a diluted solution of water. The raw material of N-oleyl-1,3-diaminopropane was diluted in water and was 92% active. 5.0 wt % of the 92% active diluted solution of N-oleyl-1,3-diaminopropane was added and resulted in a final weight percent in the final lubricant composition of 4.6 wt % N-oleyl-1,3-diaminopropane. Similarly, the raw material of acetic acid was diluted in water and was 60% active. 4.5 wt % of the 60% active diluted solution of acetic acid was added, and resulted in a final weight percent in the final lubricant composition of 2.7%. Tributoxyethyl phosphate was not diluted in water and was 100% active. The final lubricant composition had 1.0 wt % of the 100% active solution of tributoxyethyl phosphate. N,N-bis(3-aminopropyl)dodecylamine was diluted in water and was 30% active. 5.0 wt % of the 30% active solution of N,N-bis(3-aminopropyl)dodecylamine was added, and resulted in a final weight percent in the final lubricant composition of 1.5 wt % N,N-bis(3-aminopropyl)dodecylamine.
Performance trials with returnable glass bottle (RGB) on a stainless steel track were done on a pilot conveyor to check for lubricity performance as determined by COF values. Lubricant dilutions at 0.6% in deionized water were tested under semi-dry conditions (lubricants dosed for 16 seconds which is equal to one turn of the conveyor track). The lubricant was dosed again when the COF increased. Each test was started up by a 2 minute dosing of lubricant dilution.
As shown in
In conclusion, sample 15 at 0.6% concentration, performs with a lower COF and with a slightly extended off time as compared to sample 16. It is shown that the alkylamine (biocide) plays a role in the extension of the off times during the lubrication testing.
Formulations containing different alcohol ethoxylate surfactants were tested for water compatibility at a user concentration of 0.6 wt %. Recycled water is softened water containing high levels of critical anions like phosphates or sulfates, which does not have the risk of blocked distribution spray nozzles due to little or no precipitation formed by interaction of the disclosed lubricant compositions and critical anions. There were 2 types of recycled water tested: soft water with 200 ppm sulfate (high levels of sulfate), ASTM 1 (low levels of phosphate) and ASTM. Water was considered to be compatible with the anion when the turbidity value was at or below 10 FNU. The water compositions are given in Table 14.
As shown in
All the tested formulations contain an alcohol ethoxylate but the degree of ethoxylation and/or the carbon chain length is different.
As seen in
All the tested formulations contained an alcohol ethoxylate but the degree of ethoxylation and/or the carbon chain length was different.
Formulations without biocide containing different alcohol ethoxylate surfactants were tested for water compatibility at a user concentration of 0.6 wt %. The recycled water tested was ASTM 1 (low levels of phosphate) and soft water with 200 ppm sulfate (high levels of sulfate), the water compositions were given in Table 14 above.
As seen in
It is noticeable that the level of ethoxylation and the carbon chain length of the nonionic surfactant played a role in the water compatibility. Sample 16-2, sample 16-3 and sample 16-5 had low ethoxylation levels (3EO and 7EO) and had the best water compatibility with turbidity values less than 4. Sample 16, sample 16-1, sample 16-4 had turbidity values below 10 and all samples had an ethoxylation level of 8EO or higher. Sample 16-6 had the worst water compatibility (148.95 FNU), with a nonionic surfactant that had 3EO and a short carbon length (C10) rather than the other nonionic surfactant which had a longer carbon length (C12/C13 or C13).
Sample 16, sample 16-1 and sample 16-3 had lower turbidity values, respectively, 8.36 FNU, 6.88 FNU and 3.66 FNU (
As seen in
All the tested formulations contained an alcohol ethoxylate but the degree of ethoxylation and/or the carbon chain length was different.
Sample 16, sample 16-1, sample 16-2, sample 16-3, sample 16-4, sample 16-5 and sample 16-6 shows similar or slightly worse turbidity values than sample 15, sample 15-1, sample 15-2, sample 15-3, sample 15-4, sample 15-5 and sample 15-6, respectively. In conclusion, these results indicate that the addition of biocide (alkylamine) does not play a significant role on the compatibility of the lubricant with ASTM water with 10 ppm phosphate.
In conclusion, the formulations in examples 12 and 13 demonstrated excellent tolerance against anions, particularly against phosphates and sulfates. Sample 15 had a turbidity of 10.78 FNU at Day 4 and sample 16 had a turbidity of 8.36 FNU at Day 4 with high levels of sulfate in soft water. The lower turbidity value of sample 16 meant it was more compatible with recycled water with anions. Both sample 15 and sample 16 had good water compatibility, but sample 16 had increased water compatibility.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/US2016/030715 | 5/4/2016 | WO | 00 |
| Number | Date | Country | |
|---|---|---|---|
| 62165662 | May 2015 | US | |
| 62232880 | Sep 2015 | US |
