초록 ▼

The abrasion resistance of siliceous filler-reinforced rubber vulcanizates is improved by adding to the unvulcanized rubber composition a silane coupling composition comprising a mixture of a silane coupling agent, such as (a) organic silane compounds containing an internal active olefinic linkage,

The abrasion resistance of siliceous filler-reinforced rubber vulcanizates is improved by adding to the unvulcanized rubber composition a silane coupling composition comprising a mixture of a silane coupling agent, such as (a) organic silane compounds containing an internal active olefinic linkage, (b) bis(alkoxysilylalkyl)polysulfides, (c) haloalkylsilanes, and (d) silane compounds containing a vinyl functional group in the organofunctional portion of the compound, and an alkyl alkoxysilane, such as methyltrimethoxysilane. The silane coupling agent is present in coupling amounts, e.g., between 0.1 and 50 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 are 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.

대표청구항 ▼

In a rubber composition comprising a curable rubber, from 10 to 90 parts, per 100 parts of rubber, of finely divided reinforcing siliceous pigment and a coupling amount of a silane coupling agent, the improvement wherein a silane coupling composition of the silane coupling agent in combination with

In a rubber composition comprising a curable rubber, from 10 to 90 parts, per 100 parts of rubber, of finely divided reinforcing siliceous pigment and a coupling amount of a silane coupling agent, the improvement wherein a silane coupling composition of the silane coupling agent in combination with an alkoxysilane is admixed with said siliceous pigment, said alkoxysilane having the graphic formula: R″－Si－(OR′)3, wherein R′is selected from C1-C10 alkyl or alkoxyalkyl containing from 2 to 10 carbon atoms, and R″is a C1-C10 alkyl, and the silane coupling agent is chosen from the group consisting of: (a) organic silane compounds containing an internal active olefinic linkage, (b) bis(alkoxysilylalkyl)polysulfides, (c) haloalkylsilanes, and (d) silane compounds containing a vinyl functional group in the organofunctional portion of the compound, the weight ratio of the silane coupling agent to alkoxysilane being between 0.15:1 and 15:1.