Filled rubbers comprising blocked mercaptosilanes and thiuram de

Details Filled rubbers comprising blocked mercaptosilanes and thiuram de Filled rubbers comprising blocked mercaptosilanes and thiuram de

1999-02-19

2000-10-03

Wu, David W.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524262, 524265, 524269, 524280, 524282, 524283, 524392, C08K 540, C08K 5549, C08K 55419, C08K 536, C08K 300

Patent

active

061274682

ABSTRACT:
This invention describes the use of novel blocked mercaptosilanes, wherein the hydrogen atom of the mercaptan functionality has been substituted, in filled polymers. The blocked mercaptosilanes described are unique in that they allow the mixing of fillers with organic polymers to proceed while remaining inert toward coupling to the polymer. The coupling reactions of these blocked mercaptosilicon compounds are triggered by addition of an appropriate deblocking agent, which preferably is tetramethylthiuram monosulfide.

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