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US 5,708,096 AGranted
Polymer compounds and their use for the vulcanisation of halogen-containing rubbers
AssigneeBayer Aktiengesellschaft
InventorsRudiger Schubart, Rudiger Musch, Michael Happ
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Abstract
The polymer compounds according to the invention, comprising special amidines, mercapto compounds and elastomers, are mainly suitable for the production of thermally stable, halogen-containing vulcanized rubbers. The vulcanized, halogen-containing rubbers obtained by means of the polymer compounds are distinguished by a reduced tendency to undergo unwanted subsequent vulcanization and are stable towards thermal and oxidative degradation at high storage temperatures.
Claims18
Polymer compounds consisting of
- a) cyclic or acyclic amidines or a mixture thereof,
- b) mercapto compounds of benzothiazole, benzoimidazole, benzopyrimidine, benzotriazine or a mixture thereof, and
- c) ethylene/propylene rubbers (EPM), ethylene-propylene-diene rubbers (EPDM), ethylene-vinyl acetate rubbers (EVM), butadiene rubbers (BR), styrene-butadiene rubbers (SBR), natural rubbers (NR), butadiene-acrylonitrile rubber (NBR), butyl rubbers (IIR) or mixture thereof,
- wherein components a) and b) are present in the compound in a molar ratio of 0.25:1 to 2:1, and the proportion of polymer binder c) is 90 to 10% by weight with respect to the total weight of components a) to c).
1 more element
Polymer compounds comprising
- a) cyclic or acyclic amidines or a mixture thereof,
- b) mercapto compounds of benzothiazole, benzoimidazole, benzopyrimidine, benzotriazine, or a mixture thereof, and
- c) ethylene/propylene rubbers (EPM), ethylene-propylene-diene rubbers (EPDM), ethylene-vinyl acetate rubbers (EVM), butadiene rubbers (BR), styrene-butadiene rubbers (SBR), natural rubbers (NR), butadiene-acrylonitrile rubber (NBR), butyl rubbers (IIR), or a mixture thereof,
- wherein components a) and b) are present in the compound in a molar ratio of 0.25:1 to 2:1, and the proportion of polymer binder c) is 90 to 10% by weight with respect to the total weight of components a) to c).
1 more element
Polymer compounds consisting essentially of:
- a) cyclic or acyclic amidines or a mixture thereof,
- b) mercapto compounds of benzothiazole, benzoimidazole, benzopyrimidine, benzotriazine, or a mixture thereof, and
- c) ethylene/propylene rubbers (EPM), ethylene-propylene-diene rubbers (EPDM), ethylene-vinyl acetate rubbers (EVM), butadiene rubbers (BR), styrene-butadiene rubbers (SBR), natural rubbers (NR), butadiene-acrylonitrile rubber (NBR), butyl rubbers (IIR) or a mixture thereof,
- wherein components a) and b) are present in the compound in a molar ratio of 0.25:1 to 2:1, and the proportion of polymer binder c) is 90 to 10% by weight with respect to the total weight of components a) to c).
1 more element
Dependencies are inferred from the claim text.