Claims
- 1. A curable elastomer composition, comprising:
- (a) a free radical-curable elastomer capable of being vulcanized with a free radical generating compound;
- (b) a free radical generating compound present as curing agent in an amount of between about 0.1 and about 10 parts by weight per 100 parts by weight of the elastomer;
- (c) a polyfunctional monomer coagent capable of reacting with said free radical generating compound to crosslink said elastomer, present in an amount of from about 0.5 to about 50 parts by weight per 100 parts by weight of the elastomer;
- (d) a vulcanization inhibitor corresponding to the formula: ##STR3## wherein R' and R" are each independently lower alkyl of from 1 to 6 carbon atoms, Z is an alkylene radical containing from 1 to 12 carbon atoms, and Y is a member selected from the group consisting of an alkyl, cycloalkyl, aryl, alkaryl and aralkyl radical containing from 1 to 12 carbon atoms, said inhibitor being present in an amount of from about 0.01 to about 5 parts, by weight, per 100 parts by weight of the elastomer;
- wherein said free radical curable elastomer is selected from the group consisting of synthetic polyisoprene, styrenebutadiene elastomer, polybutadiene elastomer, butyl elastomer, bromobutyl elastomer, chlorobutyl elastomer, a neoprene, ethylene propylene elastomer, a nitrile elastomer, a fluoroelastomer, a high styrene butadiene copolymer, a vinyl acetate ethylene copolymer, chlorinated polyethylene elastomer, a chlorosulfonated polyethylene elastomer, reclaimed elastomer and mixtures thereof; and
- wherein said polyfunctional monomer coagent is selected from the group consisting of trimethylol propane trimethacrylate, pentaerythritol tetramethacrylate, glycerol trimethacrylate, glycerol triacrylate, trimethylol propane triacylate, pentaerythritol tetraacrylate, trimethylol ethane trimethacrylate, trimethylol ethane triacrylate, 1,3-butylene glycol dimethacrylate, ethylene glycol dimethacrylate, 1,3-butylene glycol diacrylate, 1,4-butylene glycol dimethacrylate, polyethylene glycol 200 dimethacrylate, a di-.alpha.-olefin derived polymethylene diacrylate or methacrylate, and mixtures of any of the above with an alkyl mono(meth)acrylate, dipentaerythritol tetra(penta)acrylate and methacrylate, di-trimethylol propane tetraacrylate and methacrylate, diallyl phthalate, diallyl chloroendate, diallyl isophthalate, diallyl terephthalate, triallyl cyanurate, triallyl isocyanurate, triallyl trimellitate, the diallyl ethers or the triallyl ethers of trimethylol propane, trimethylol ethane and pentaerythritol, zinc diacrylate or the monobasic salts thereof, zince dimethacrylate or the monobasic salts thereof, a poly(meth)acrylate derivative of an oxyalkylated polyol and mixtures thereof.
- 2. The composition of claim 1, wherein said elastomer is an elastomeric high polymer comprising conjugated diene monomers linked through carbon-carbon bonds.
- 3. The composition of claim 1 wherein said elastomer is a member selected from the group consisting of nitrile, ethylene-propylene diene, chlorinated polyethylene, chlorosulfonated polyethylene, polybutadiene and natural elastomer.
- 4. The composition of claim 1 wherein said elastomer is a nitrile elastomer.
- 5. The composition of claim 1 wherein said elastomer is natural rubber.
- 6. The composition of claim 1 wherein R' and R" are each tertiary alkyl radicals.
- 7. The composition of claim 6 wherein Y is lower alkyl containing from 1 to 6 carbon atoms.
- 8. The composition of claim 7 wherein Z is lower alkyl containing of from 1 to 6 carbon atoms.
- 9. The composition of claim 8 wherein Y is methylene.
- 10. The composition of claim 1 wherein said free radical generating compound is an organic peroxide.
- 11. The composition of claim 10 wherein said peroxide is a di-tertiary peroxide.
- 12. The composition of claim 11 wherein said peroxide is di-tertiary butyl peroxide.
- 13. The composition of claim 11 wherein said peroxide is dicumyl peroxide.
- 14. The composition of claim 1 wherein said polyfunctional monomer coagent is a (meth)acrylate monomer.
- 15. The composition of claim 14 wherein said coagent is trimethylol propane trimethacyrlate.
- 16. The composition of claim 14 wherein said coagent is 1,3-butylene glycol dimethacrylate.
- 17. The composition of claim 14 wherein said coagent is pentaerythritol tetramethacrylate.
- 18. The composition of claim 14 wherein said (meth)acrylate monomer comprises an alkoxylated admixture of (meth)acrylate monomer.
- 19. The composition of claim 11 wherein said polyfunctional monomer coagent is zinc diacrylate or a monobasic salt thereof.
- 20. The composition of claim 1 wherein said polyfunctional monomer coagent is zinc dimethacrylate or a monobasic salt thereof.
- 21. The composition of claim 3 wherein said vulcanization inhibitor is 2,6-ditertiarybutyl-4-(dimethylamino)methyl phenol.
- 22. The composition of claim 13 wherein said vulcanization inhibitor is 2,6-di-t-butyl-4-(dimethylamino)methyl phenol.
- 23. A cured elastomeric composition provided by curing the composition of claim 1.
- 24. A cured elastomeric composition provided by curing the composition of claim 21.
- 25. A curable elastomer composition, comprising:
- (a) a free radical curable elastomer comprising nitrile rubber, ethylene-propylene diene rubber or a chlorinated polyethylene rubber;
- (b) from about 0.1 to about 10 parts by weight per 100 parts by weight of the elastomer of a free radical generating compound comprising an alkyl peroxide;
- (c) from about 0.5 to about 50 parts by weight per 100 parts by weight of the elastomer of a polyfunctional monomer coagent comprising trimethylol propane trimethacrylate, zinc diacrylate or zinc dimethacrylate;
- (d) a vulcanization inhibitor comprising 2,6-di-t-butyl-4-(dimethylamino)methyl phenol.
- 26. The composition or claim 25 wherein said rubber comprises polybutadiene acrylonitrile copolymer, wherein said free radical generating compound comprises dicumyl peroxide, wherein said polyfunctional monomer coagent comprises trimetholyl propane trimethacrylate, and wherein said vulcanization inhibitor comprises 2,6-di-t-butyl-4-(dimethylamino)methyl phenol.
- 27. The composition of claim 25 wherein said rubber comprises polybutadiene acrylonitrile copolymer, wherein said free radical generating compound comprises dicumyl peroxide, wherein said polyfunctional monomer coagent comprises zinc diacrylate or zinc dimethacrylate and wherein said vulcanization inhibitor comprises 2,6-di-t-butyl-4-(dimethylamino)methyl phenol.
- 28. The composition of claim 25 wherein said rubber comprises chlorinated polyethylene rubber, wherein said free radical generating compound comprises dicumyl peroxide, wherein said polyfunctional monomer coagent comprises trimethylol propane trimethacrylate and wherein said vulcanization inhibitor comprises 2,6-di-t-butyl-4-(dimethylamino)methyl phenol.
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part of application Ser. No. 166,797, filed Mar. 3, 1988, now abandoned, which is a continuation of application Ser. No. 789,526 filed Oct. 21, 1985, abandoned.
US Referenced Citations (10)
Continuations (1)
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Number |
Date |
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Parent |
789526 |
Oct 1985 |
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Continuation in Parts (1)
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Number |
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166797 |
Mar 1988 |
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