CA1267503A - Antitacking composition - Google Patents
Antitacking compositionInfo
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Abstract
ANTITACKING COMPOSITION
Abstract of the Disclosure The instant invention relates to a process and composition for preventing or substantially reducing adhesion between elastomer sheets when stacked one on top of the other during storage wherein an aqueous dispersion composition is applied to the sheets which composition comprises:
a) carboxylic acid amides of aliphatic diamines having the structure wherein Ry is an aliphatic moiety derived from a higher fatty carboxylic acid having at least 10 carbon atoms up to about 33 carbon atoms, Rx is an aliphatic moiety having from 1 to about 33 carbon atoms and n is an integer from 1 to 2.
b) an oxyalkylated fatty amide having the structure II
wherein R is an aliphatic group having from about 12 to 18 carbon atoms, A is -C2H4O-;
-C3H6O- or a heteric of block mixture thereof and n is 1 to 15.
Abstract of the Disclosure The instant invention relates to a process and composition for preventing or substantially reducing adhesion between elastomer sheets when stacked one on top of the other during storage wherein an aqueous dispersion composition is applied to the sheets which composition comprises:
a) carboxylic acid amides of aliphatic diamines having the structure wherein Ry is an aliphatic moiety derived from a higher fatty carboxylic acid having at least 10 carbon atoms up to about 33 carbon atoms, Rx is an aliphatic moiety having from 1 to about 33 carbon atoms and n is an integer from 1 to 2.
b) an oxyalkylated fatty amide having the structure II
wherein R is an aliphatic group having from about 12 to 18 carbon atoms, A is -C2H4O-;
-C3H6O- or a heteric of block mixture thereof and n is 1 to 15.
Description
~ n3 1477 ANTITACKIN~ C~POSITION
~ackground of the Invention This invention relates to a composition of fatty amides and more particularly to such compositions as anti-tacking agents for storage of rubber sheets when stacked one on top of the other.
In many standard rubber manufacturing operations, unvulcanized rubber is rolled out as sheets, stacked one on top the other, and stored for a period of weeks or months until needed. The uncured stock is tacky and tends to fuse to itself during storage, making it impossible to separate the sheets when it is time to use them. To prevent this from happening, manufacturers use sheets of plastic or antitack agents to keep the stock sepsrated. Use of sheets of plastic is expensive and labor intensive.
The standard antitsck agents are carboxylic acid amides of sliphatic diamines, particularly ethylene bis-stearamide wax powder. It has the desirable property of preventing the layers from adhering before vulcanization but contributing to adhesion during vulcanization of layers of stock in such uses as V-belt manufacture. It is believed the amide groups of the bisstearamide chemically bond to the rubber during vulcanization, accounting for its adhesive property. In order for the bis-stearamide to be used efficiently, it must be applied as a fine powder. The '7~()3 powder is an inhalation nuisance for the workers and a housekeeping problem because it accumulates throughout the workplace.
Attempts to eliminate the dusting problem by preparing aqueous emulsions have failed because dispersants which kept bisstearamide dispersed before application also prevented adhesion during vulcanization.
Accordingly, it is a purpose of the instant invention to provide a method of preventing or substantially reducing adhesion between elastomer sheets when stacked one on top of the other during storage without preventing adhesion during vulcanization and to provide a liquid dispersion of an antitack composition therefor.
U.S. Patents 4,129,543 and 4,225,554 (the latter being a division of the former) disclose a mold lubrication and parting compound for a liquid thermosetting polyester resin composition comprising an alkylphosphate ester parting agent in combination with an alkylene bis-alkamide material such as ethylene bis(stearamide). However, there is no disclosure of an oxyalkylene fatty amide type compound and the reference requires an alkylphosphate ester. Further-more, the mechanism by which unsaturated polyester resins crosslink (cure) is quite different from vulcanization of rubber. The former involves free radical coupling of carbon-carbon double bonds, the latter involves addition of sulfur across double bonds to form sulfide crosslinks.
)3 U.S. Patent 3,935,143 relates to dispersing on the surface of an ABS resin an organic compound. The organic compound msy be ethylene bis(stearamide). However, there is no disclosure of a composition including a polyoxyalkylene fatty amide.
U.S. Patents 3,862,066 and 3,340,219 describe methods for making molded plastic articles, i.e., in the first patent vinyl chloride polymer compounds, in the second patent polyacetal compositions which involve uniformly dispersing as a lubricant in the resin or plastic composi-tion, a lubricant which may be an ethylene stearamide. This composition also does not include an oxyalkylene fatty amide.
Summary of the Invention The instant invention relates to a process and composition for preventing or substantially reducing adhesion between elastomer sheets when stacked one on top of the other during storage wherein an aqueous dispersion composition is applied to the sheets which composition comprises:
a) carboxylic acid amides of aliphatic diamines having the structure R ~N~-R~ I
n 1~ti 7503 wherein Ry is an aliphatic moiety derived from a higher fatty carboxylic acid having at least 10 carbon atoms up to about 33 carbon atoms, Rx is an aliphatic moiety having from 1 to about 33 carbon atoms and n is an integer from 1 to 2.
b) an'oxyalkylated fatty amide having the structure R~N ~A)n~ II
wherein R is an aliphatic group having from about 9 to 18 carbon atoms, A is -C2H4O-; -C3H6O- or a heteric or block mixture thereof and n is 1 to 15.
The composition contains about 5 to 75 percent by weight of the two amides (a) plus (b) and the ratio of the carboxylic acid amide of an aliphatic diamine (a) to the oxyalkylated fatty amide (b) is from about 95:5 to 5:95.
Description of the Preferred Embodiments Preferably, in formula I above, Rx is an aliphatic moiety derived from saturated and unsaturated (non-benzenoid) hydrocarbons and their substituted derivatives (wherein the substituents are inert) having an open chain or cyclic structure which may include a minor proportion of ~2~'7S03 heteroatoms selected from the group consisting of oxygen, sulfur, and nitrogen in the skeletal structure. The preferred aliphatic moieties have an open chain (linear or branched) carbon skeleton of at least one up to about 33 carbon atoms and n is an integer from 1 to 2.
It is to be understood that the carboxylic acid moieties may be ~he same or different in the bis-aliphatic amides, and that the aliphatic moiety msy contain additional amide groups of the structure -N-J-Ry Suitable such fatty acid amides of aliphatic diamines include, for example, ethylene distearamide, propylene distearamide, butylene distearamide, propylidene dioleamide, N-(ethylideneoleamide) stearamide, methylene-bis-lauramide, N-(ethylenestearamide) lauramide, N-(methylene palmitamide) capramide, etc.
The preferred carboxylic scid amide is N,N'-ethylene-bis-stearamide.
The preferred oxyalkylated fatty amide is one wherein A is all or substantially all -C2H4O-; n equals 5 and R is a mixture of C12 - C18 aliphatic groups.
The ra-tio of carboxylic acid amide of aliphatic diamine (a) to oxyalkylated fatty amide (b) is from about 95:5 to 5:95, preferably about 70:30 to 30:70. The dispersion contains from about 5 to 75 percent by weight total carboxylic acid amide of aliphatic diamine (a) plus oxyalkylated fatty amide (b) and preferably 15 to 40 percent by weight of (a) plus (b), balance water.
The dispersion may contain standard fungicides and bactericides in an amount of about 0.05 to 1.0 percent by weight to prevent spoilage of the dispersion during storage.
Any conventional fungicide may be employed such as those sold by R.T. Vanderbilt Company, Inc. under the trade mark Vancide, for example, Vancide 51Z-zinc dimethyldithiocarba-mate and zinc 2-mercaptobenzothiazole and Vancide TH
hexahydro-1,3,5-triethyl-s-triazine. Suitable bactericides include those sold by the Dow Chemical Company under the trade marks Dowicil 75, Dowicil 200, and Nuodex PNA the latter of which is a mercury compound.
The dispersion may also contain standard accelerators in amount of about 0.1 to 0.5 percent by weight. Any standard rubber compound accelerators may be employed such as bismutate-bismuthdimethyldithiocarbamate, cadmate-cadmium diethyldithiocarbamate, cumate-copper dimethyldithiocarbamate. Others include tetramethylthiuram 5 monosulfide dipentamethylene thiuram hexasulfide, and zinc /
-5~
~ackground of the Invention This invention relates to a composition of fatty amides and more particularly to such compositions as anti-tacking agents for storage of rubber sheets when stacked one on top of the other.
In many standard rubber manufacturing operations, unvulcanized rubber is rolled out as sheets, stacked one on top the other, and stored for a period of weeks or months until needed. The uncured stock is tacky and tends to fuse to itself during storage, making it impossible to separate the sheets when it is time to use them. To prevent this from happening, manufacturers use sheets of plastic or antitack agents to keep the stock sepsrated. Use of sheets of plastic is expensive and labor intensive.
The standard antitsck agents are carboxylic acid amides of sliphatic diamines, particularly ethylene bis-stearamide wax powder. It has the desirable property of preventing the layers from adhering before vulcanization but contributing to adhesion during vulcanization of layers of stock in such uses as V-belt manufacture. It is believed the amide groups of the bisstearamide chemically bond to the rubber during vulcanization, accounting for its adhesive property. In order for the bis-stearamide to be used efficiently, it must be applied as a fine powder. The '7~()3 powder is an inhalation nuisance for the workers and a housekeeping problem because it accumulates throughout the workplace.
Attempts to eliminate the dusting problem by preparing aqueous emulsions have failed because dispersants which kept bisstearamide dispersed before application also prevented adhesion during vulcanization.
Accordingly, it is a purpose of the instant invention to provide a method of preventing or substantially reducing adhesion between elastomer sheets when stacked one on top of the other during storage without preventing adhesion during vulcanization and to provide a liquid dispersion of an antitack composition therefor.
U.S. Patents 4,129,543 and 4,225,554 (the latter being a division of the former) disclose a mold lubrication and parting compound for a liquid thermosetting polyester resin composition comprising an alkylphosphate ester parting agent in combination with an alkylene bis-alkamide material such as ethylene bis(stearamide). However, there is no disclosure of an oxyalkylene fatty amide type compound and the reference requires an alkylphosphate ester. Further-more, the mechanism by which unsaturated polyester resins crosslink (cure) is quite different from vulcanization of rubber. The former involves free radical coupling of carbon-carbon double bonds, the latter involves addition of sulfur across double bonds to form sulfide crosslinks.
)3 U.S. Patent 3,935,143 relates to dispersing on the surface of an ABS resin an organic compound. The organic compound msy be ethylene bis(stearamide). However, there is no disclosure of a composition including a polyoxyalkylene fatty amide.
U.S. Patents 3,862,066 and 3,340,219 describe methods for making molded plastic articles, i.e., in the first patent vinyl chloride polymer compounds, in the second patent polyacetal compositions which involve uniformly dispersing as a lubricant in the resin or plastic composi-tion, a lubricant which may be an ethylene stearamide. This composition also does not include an oxyalkylene fatty amide.
Summary of the Invention The instant invention relates to a process and composition for preventing or substantially reducing adhesion between elastomer sheets when stacked one on top of the other during storage wherein an aqueous dispersion composition is applied to the sheets which composition comprises:
a) carboxylic acid amides of aliphatic diamines having the structure R ~N~-R~ I
n 1~ti 7503 wherein Ry is an aliphatic moiety derived from a higher fatty carboxylic acid having at least 10 carbon atoms up to about 33 carbon atoms, Rx is an aliphatic moiety having from 1 to about 33 carbon atoms and n is an integer from 1 to 2.
b) an'oxyalkylated fatty amide having the structure R~N ~A)n~ II
wherein R is an aliphatic group having from about 9 to 18 carbon atoms, A is -C2H4O-; -C3H6O- or a heteric or block mixture thereof and n is 1 to 15.
The composition contains about 5 to 75 percent by weight of the two amides (a) plus (b) and the ratio of the carboxylic acid amide of an aliphatic diamine (a) to the oxyalkylated fatty amide (b) is from about 95:5 to 5:95.
Description of the Preferred Embodiments Preferably, in formula I above, Rx is an aliphatic moiety derived from saturated and unsaturated (non-benzenoid) hydrocarbons and their substituted derivatives (wherein the substituents are inert) having an open chain or cyclic structure which may include a minor proportion of ~2~'7S03 heteroatoms selected from the group consisting of oxygen, sulfur, and nitrogen in the skeletal structure. The preferred aliphatic moieties have an open chain (linear or branched) carbon skeleton of at least one up to about 33 carbon atoms and n is an integer from 1 to 2.
It is to be understood that the carboxylic acid moieties may be ~he same or different in the bis-aliphatic amides, and that the aliphatic moiety msy contain additional amide groups of the structure -N-J-Ry Suitable such fatty acid amides of aliphatic diamines include, for example, ethylene distearamide, propylene distearamide, butylene distearamide, propylidene dioleamide, N-(ethylideneoleamide) stearamide, methylene-bis-lauramide, N-(ethylenestearamide) lauramide, N-(methylene palmitamide) capramide, etc.
The preferred carboxylic scid amide is N,N'-ethylene-bis-stearamide.
The preferred oxyalkylated fatty amide is one wherein A is all or substantially all -C2H4O-; n equals 5 and R is a mixture of C12 - C18 aliphatic groups.
The ra-tio of carboxylic acid amide of aliphatic diamine (a) to oxyalkylated fatty amide (b) is from about 95:5 to 5:95, preferably about 70:30 to 30:70. The dispersion contains from about 5 to 75 percent by weight total carboxylic acid amide of aliphatic diamine (a) plus oxyalkylated fatty amide (b) and preferably 15 to 40 percent by weight of (a) plus (b), balance water.
The dispersion may contain standard fungicides and bactericides in an amount of about 0.05 to 1.0 percent by weight to prevent spoilage of the dispersion during storage.
Any conventional fungicide may be employed such as those sold by R.T. Vanderbilt Company, Inc. under the trade mark Vancide, for example, Vancide 51Z-zinc dimethyldithiocarba-mate and zinc 2-mercaptobenzothiazole and Vancide TH
hexahydro-1,3,5-triethyl-s-triazine. Suitable bactericides include those sold by the Dow Chemical Company under the trade marks Dowicil 75, Dowicil 200, and Nuodex PNA the latter of which is a mercury compound.
The dispersion may also contain standard accelerators in amount of about 0.1 to 0.5 percent by weight. Any standard rubber compound accelerators may be employed such as bismutate-bismuthdimethyldithiocarbamate, cadmate-cadmium diethyldithiocarbamate, cumate-copper dimethyldithiocarbamate. Others include tetramethylthiuram 5 monosulfide dipentamethylene thiuram hexasulfide, and zinc /
-5~
2-mercaptobenzothiazole. Other accelerators are disclosed on pages 338-348, vol. 20, 3rd Edition of the Encyclopedia of Chemical Technolo~y by Kirk and Othmer.
Inorganic accelerators may also be employed such as lead carbonate, lead oxide, litharge, hydrated lime, zinc oxide and magnesium oxide. Mixtures of organic accelerators and metal accelerators may be employed. The term "acceler-ator" as used herein includes both the inorganic accelerators as well as the organic accelerators. The total amount of accelerators is from about 0.1 to 0.5 percent by weight of the composition. The total amount of such additives, i.e., bactericides, fungicides and accelerators is about 0.05 to 1.5 percent by weight. It has been found that the dispersion of this invention solves the problems presented by antitacking powders while retaining good anti-tacking properties without interfering with the vulcanization of elastomers employing free radical mechanisms. The dispersion of the invention has been found to be effective with Neoprene, SBR, EPDM, Nitrile, Isoprene and Butadiene rubbers.
The term "SBR" refers to the widely used styrene-butadiene copolymer rubber well known to those skilled in the art. This rubber is commonly made with a charge ratio of 25 percent styrene and 75 percent butadiene.
'7503 The term "EPDM" is used in the sense of its definition as found in ASTM-D-1418-64 and is intended to mean a terpolymer of ethylene, propylene and a diene monomer. Illustrative methods for preparing such terpolymers are found in U.S. Patent No. 3,280,082 and British Patent No. 1,030,289. The preferred terpolymers contain from about 40 to about 80 weight percent ethylene and from about 1 to about 10 weight percent of the diene with the balance of the terpolymer being propylene. This is an elastomer which can be vulcanized; used for automotive parts, cable coating, hose, footwear, and other products.
The following examples illustrate the excellent antitacking properties of the composition of the instant invention as well as demonstrating that the instant dispersion composition accomplishes this result with good adhesion whereas prior art dispersions had poor adhesion.
The antitacking and adhesion tests procedures are as fo~lows.
Procedure for Antitacking Test Rubber stock (5" x 4" x .09") is coated with a dispersion using a wet film thickness applicator. The thickness of the film is 3 mils (0.003"). The stock is air dried for 30 minutes and the appearance of the coated rubber observed. After 30 minutes an identical piece of rubber is placed over the coated rubber. Both sides of the sample are --. .
, '`': ' ~i7~
covered with Mylar*film and placed under a lO lb. weight and allowed to stand undisturbed for 24 hours. After 24 hours the weight is removed and the sample is checked for sticking and rated from l to 5, respectively. The lowest number being the best.
Adhesion Test Procedure The same sample, which was used for the anti-tacking test, is cured in a small laboratory press at 150 C
for 30 minutes at a pressure of 80 psig.
A strip 4" x 1" is cut from the center of the sample and tested for adhesion on a Scott-Instron tester in accordance with ASTM D413-82.
Unless otherwise indicated throughout the instant specification and claims, all temperatures are in degrees centigrade and all parts and percentages are by weight.
* (trade mark of Dupont) ,...
Examples 1 snd 2 Two samples of Neoprene rubber stock were coated with a dispersion comprising 20 percent N,N'-ethylene-bis-stearamide; 10 percent of a mixture of fatty amides having the formula II set forth above wherein R vsries from C12- C18 aliphatic group, A is -C2H40-, and n is 5, balance water. As 8 control, rubber stock, as described in the tests above, was coated with conventional N,N'-ethylene-bis-stearamide powder and subjected to the above adhesion test procedure. The results of these tests are shown in Table I
below.
TABLE I
Example No. Antitacking Adhesion Appearance Test Sample Control Wet Dry Rating lbs. lbs.
1 Smooth White 1 7 7 2 Smooth White 1 7.5 8 Examples 3 and 4 Samples of SBR rubber stock were coated with a dispersion comprising 20 percent N,N'-ethylene-bis-stear-amide; 10 percent of a mixture of fatty amides having the formula II set forth above wherein R varies from '7~)3 C12- C18 aliphatic group, A is -C2H4O- and n is 5, balance water. As a control, rubber stock, as described in the tests above, was coated with conventional N,N'-ethylene-bis-stearamide powder and subjected to the above adhesion test procedure. The results of these tests are shown in Table II
below, TABLE II
Example No. Antitacking Adhesion Appearance Test Sample Control Wet Dry Rating lbs. lbs.
Inorganic accelerators may also be employed such as lead carbonate, lead oxide, litharge, hydrated lime, zinc oxide and magnesium oxide. Mixtures of organic accelerators and metal accelerators may be employed. The term "acceler-ator" as used herein includes both the inorganic accelerators as well as the organic accelerators. The total amount of accelerators is from about 0.1 to 0.5 percent by weight of the composition. The total amount of such additives, i.e., bactericides, fungicides and accelerators is about 0.05 to 1.5 percent by weight. It has been found that the dispersion of this invention solves the problems presented by antitacking powders while retaining good anti-tacking properties without interfering with the vulcanization of elastomers employing free radical mechanisms. The dispersion of the invention has been found to be effective with Neoprene, SBR, EPDM, Nitrile, Isoprene and Butadiene rubbers.
The term "SBR" refers to the widely used styrene-butadiene copolymer rubber well known to those skilled in the art. This rubber is commonly made with a charge ratio of 25 percent styrene and 75 percent butadiene.
'7503 The term "EPDM" is used in the sense of its definition as found in ASTM-D-1418-64 and is intended to mean a terpolymer of ethylene, propylene and a diene monomer. Illustrative methods for preparing such terpolymers are found in U.S. Patent No. 3,280,082 and British Patent No. 1,030,289. The preferred terpolymers contain from about 40 to about 80 weight percent ethylene and from about 1 to about 10 weight percent of the diene with the balance of the terpolymer being propylene. This is an elastomer which can be vulcanized; used for automotive parts, cable coating, hose, footwear, and other products.
The following examples illustrate the excellent antitacking properties of the composition of the instant invention as well as demonstrating that the instant dispersion composition accomplishes this result with good adhesion whereas prior art dispersions had poor adhesion.
The antitacking and adhesion tests procedures are as fo~lows.
Procedure for Antitacking Test Rubber stock (5" x 4" x .09") is coated with a dispersion using a wet film thickness applicator. The thickness of the film is 3 mils (0.003"). The stock is air dried for 30 minutes and the appearance of the coated rubber observed. After 30 minutes an identical piece of rubber is placed over the coated rubber. Both sides of the sample are --. .
, '`': ' ~i7~
covered with Mylar*film and placed under a lO lb. weight and allowed to stand undisturbed for 24 hours. After 24 hours the weight is removed and the sample is checked for sticking and rated from l to 5, respectively. The lowest number being the best.
Adhesion Test Procedure The same sample, which was used for the anti-tacking test, is cured in a small laboratory press at 150 C
for 30 minutes at a pressure of 80 psig.
A strip 4" x 1" is cut from the center of the sample and tested for adhesion on a Scott-Instron tester in accordance with ASTM D413-82.
Unless otherwise indicated throughout the instant specification and claims, all temperatures are in degrees centigrade and all parts and percentages are by weight.
* (trade mark of Dupont) ,...
Examples 1 snd 2 Two samples of Neoprene rubber stock were coated with a dispersion comprising 20 percent N,N'-ethylene-bis-stearamide; 10 percent of a mixture of fatty amides having the formula II set forth above wherein R vsries from C12- C18 aliphatic group, A is -C2H40-, and n is 5, balance water. As 8 control, rubber stock, as described in the tests above, was coated with conventional N,N'-ethylene-bis-stearamide powder and subjected to the above adhesion test procedure. The results of these tests are shown in Table I
below.
TABLE I
Example No. Antitacking Adhesion Appearance Test Sample Control Wet Dry Rating lbs. lbs.
1 Smooth White 1 7 7 2 Smooth White 1 7.5 8 Examples 3 and 4 Samples of SBR rubber stock were coated with a dispersion comprising 20 percent N,N'-ethylene-bis-stear-amide; 10 percent of a mixture of fatty amides having the formula II set forth above wherein R varies from '7~)3 C12- C18 aliphatic group, A is -C2H4O- and n is 5, balance water. As a control, rubber stock, as described in the tests above, was coated with conventional N,N'-ethylene-bis-stearamide powder and subjected to the above adhesion test procedure. The results of these tests are shown in Table II
below, TABLE II
Example No. Antitacking Adhesion Appearance Test Sample Control Wet Dry Rating lbs. lbs.
3 Smooth White 1 16.5 18
4 Smooth White 1 16.5 16.7 _xample 5 Example 1 is repeated with the exception that EPDM
rubber is employed in lieu of Neoprene rubber. Excellent antitacking is achieved and the adhesion of the dispersion is comparable to the conventional stearamide powder.
Example 6 Example 1 is repeated with the exception that the dispersion composition consists of 10 percent of the N,N'-ethylene-bis-stearamide, 1 percent of the oxyalkylated fatty amide and the balance water. Excellent antitacking is achieved and the adhesion is comparable to that achieved ~2~;7~:i03 with the N,N'-ethylene-bis-stearamide powder. This disposi-tion is stable for more than one week at room temperature and is stable after two freeze and thaw cycles.
rubber is employed in lieu of Neoprene rubber. Excellent antitacking is achieved and the adhesion of the dispersion is comparable to the conventional stearamide powder.
Example 6 Example 1 is repeated with the exception that the dispersion composition consists of 10 percent of the N,N'-ethylene-bis-stearamide, 1 percent of the oxyalkylated fatty amide and the balance water. Excellent antitacking is achieved and the adhesion is comparable to that achieved ~2~;7~:i03 with the N,N'-ethylene-bis-stearamide powder. This disposi-tion is stable for more than one week at room temperature and is stable after two freeze and thaw cycles.
Claims (16)
1. A composition of matter comprising:
a) carboxylic acid amide of aliphatic diamine having the structure wherein Ry is an aliphatic moiety derived from a higher fatty carboxylic acid having at least 10 carbon atoms up to about 33 carbon atoms, Rx is an aliphatic moiety having from about 1 to 33 carbon atoms and n is an integer from 1 to 2, b) an oxyalkylated fatty amide having the formula wherein R is a C12- C18 aliphatic group, n is 1 to 15 and A is -C2H4O-; -C3H6O- or a heteric or block mixture thereof, and c) water, wherein said composition contains about 5 to 75 percent by weight of the two amides (a) plus (b) and the ratio of the carboxylic acid amide of an aliphatic diamine (a) to the oxyalkylated fatty amide (b) is from about 95:5 to 5:95.
a) carboxylic acid amide of aliphatic diamine having the structure wherein Ry is an aliphatic moiety derived from a higher fatty carboxylic acid having at least 10 carbon atoms up to about 33 carbon atoms, Rx is an aliphatic moiety having from about 1 to 33 carbon atoms and n is an integer from 1 to 2, b) an oxyalkylated fatty amide having the formula wherein R is a C12- C18 aliphatic group, n is 1 to 15 and A is -C2H4O-; -C3H6O- or a heteric or block mixture thereof, and c) water, wherein said composition contains about 5 to 75 percent by weight of the two amides (a) plus (b) and the ratio of the carboxylic acid amide of an aliphatic diamine (a) to the oxyalkylated fatty amide (b) is from about 95:5 to 5:95.
2. The composition of claim 1 wherein said component (a) is N,N'-ethylene-bis-stearimide, A of compo-nent (b) is -C2H4O-, and n of component (b) equals 5.
3. The composition of claim 1 including at least one additive selected from the group consisting of bacter-icides, fungicides, and accelerators.
4. The composition of claim 1 wherein said composition contains about O.O5 to 1.5 percent by weight of said additive.
5. The composition of claim 3 or 4 wherein said additive is selected from the group consisting of bacter-icides and fungicides and the amount of said additive is about O.O5 to 1.O percent by weight.
6. The composition of claim 3 wherein said composition contains about 0.1 to 0.5 percent by weight of said additive and said additive is an accelerator.
7. The composition of claim 5 wherein said additives include in addition to said bactericides and fungicides, about 0.1 to 0.5 percent by weight of at least one accelerator.
8. A process for preventing or substantially reducing adhesion between unvulcanized sheets of elastomers employing free radical mechanism, when stacked one on top of the other during storage, by applying a dispersion composi-tion comprising:
a) carboxylic acid amides of aliphatic diamines having the structure wherein Ry is an aliphatic moiety derived from a higher fatty carboxylic acid having at least 10 carbon atoms up to about 33 carbon atoms, Rx is an aliphatic moiety having from 1 to sbout 33 carbon atoms and n is an integer from 1 to 2, b) an oxyalkylated fatty amide having the formula II
wherein R is a C12 - C18 aliphatic gro p, 1 to 15 and A is -C2H4O-; -C3H6O- or a heteric or block mixture thereof, snd c) water, wherein said dispersion composition comprises about 5 to 75 percent by weight of the two amides (a) plus (b) and the ratio of the carboxylic acid amide of an aliphatic diamine (a) to the oxyalkylated fatty amide (b) is from about 95:5 to 5:95.
a) carboxylic acid amides of aliphatic diamines having the structure wherein Ry is an aliphatic moiety derived from a higher fatty carboxylic acid having at least 10 carbon atoms up to about 33 carbon atoms, Rx is an aliphatic moiety having from 1 to sbout 33 carbon atoms and n is an integer from 1 to 2, b) an oxyalkylated fatty amide having the formula II
wherein R is a C12 - C18 aliphatic gro p, 1 to 15 and A is -C2H4O-; -C3H6O- or a heteric or block mixture thereof, snd c) water, wherein said dispersion composition comprises about 5 to 75 percent by weight of the two amides (a) plus (b) and the ratio of the carboxylic acid amide of an aliphatic diamine (a) to the oxyalkylated fatty amide (b) is from about 95:5 to 5:95.
9. The process of claim 8 wherein said dispersion contains at lesst one additive selected from the group consisting of bactericides, fungicides, snd accelerators.
10. The process of claim g wherein said dispersion composition contains about O.O5 to 1.5 percent by weight of said additive.
11. The process of claim 9 wherein said additive is selected from the group consisting of bactericides and fungicides and the amount thereof is about O.O5 to 1.O
percent by weight,
percent by weight,
12. The process of claim 9 wherein said dispersion composition contains about O.1 to O.5 percent by weight of said additive and said additive is an accelerator.
13. The process of claim ll wherein said additives include in addition to said bactericides and fungicides, about O.1 to O.5 percent by weight of at least one accelerator.
14. The process of claim 8, 9 or 13 wherein said elastomer is Neoprene rubber.
15. The process of claim 8, 9 or 13, wherein said elastomer is SBR rubber.
16. The process of claim 8, 9 or 13,wherein said elastomer is-EPDM rubber.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US73794785A | 1985-05-28 | 1985-05-28 | |
| US737,947 | 1991-07-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1267503A true CA1267503A (en) | 1990-04-10 |
Family
ID=24965924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000508034A Expired - Fee Related CA1267503A (en) | 1985-05-28 | 1986-04-30 | Antitacking composition |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS6230745A (en) |
| CA (1) | CA1267503A (en) |
-
1986
- 1986-04-30 CA CA000508034A patent/CA1267503A/en not_active Expired - Fee Related
- 1986-05-28 JP JP12141586A patent/JPS6230745A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6230745A (en) | 1987-02-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |