PROCESSES FOR PRODUCTION OF KAOLIN-CONTAINING SILICONE RUBBER COMPOSITIONS Russian patent published in 2008 - IPC C08K3/34 C08K9/06 C08L83/04 

FIELD: rubber industry.

SUBSTANCE: invention relates to high-filled silicone rubber compositions containing modified kaolin and production processes thereof. Invention provides modified kaolin-containing silicone rubber composition essentially composed of organopolysiloxane, modified kaolin, curing agent, and, optionally, additives selected from group consisting of one or several rheology modifier representatives, pigments, dyes, antitack agents, plasticizers, adhesion promoters, foaming agents, fire retardants, and drying accelerators, said composition essentially containing no enhancing extenders. Composition is obtained by mixing organopolysiloxane and modified kaolin at ambient temperature, adding curing agent to the resulting mixture, and curing it at temperature higher than ambient temperature. Thus obtained compositions are suitable to extrude profiled products from silicone, in coatings for conductors and cables, and as sealing materials in glazing operations and in construction.

EFFECT: enabled production of rubber compositions with only one extender.

10 cl, 8 tbl, 11 ex