Rubber compositions

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

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Details

524262, 524575, C08K 912, C08K 336, C08K 534

Patent

active

044749082

ABSTRACT:
The abrasion resistance of siliceous filler-reinforced rubber vulcanizates is improved by adding to the unvulcanized rubber composition silane coupling agent comprising a mixture of a mercaptosilane, such as mercaptopropyltrimethoxysilane, and an alkyl alkoxysilane, such as methyltrimethoxysilane. The mercaptosilane is present in amounts of between 0.3 and 15 parts per hundred parts of rubber, and the weight ratio of mercaptosilane to alkyl alkoxysilane is between 0.15:1 and 15:1. Preferably, the silanes in a ratio of about 1:1 are admixed with a hydrocarbon process oil and the oil-silane mixture added to the siliceous filler-rubber mixture.

REFERENCES:
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patent: 3350345 (1967-10-01), Vanderbilt et al.
patent: 3737334 (1973-06-01), Doran et al.
patent: 3768537 (1973-10-01), Hess et al.
patent: 3873489 (1975-03-01), Thurn et al.
patent: 3881536 (1975-05-01), Doran et al.
patent: 3884285 (1975-05-01), Russell et al.
patent: 4002594 (1977-01-01), Fetterman
patent: 4143027 (1979-03-01), Sollman et al.

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