Vulcanizates containing silica

Details Vulcanizates containing silica Vulcanizates containing silica

C - Chemistry, Metallurgy

08

K

18/1170, 400/905

C08K 3/22 (2006.01) C08K 3/34 (2006.01) C08L 9/00 (2006.01)

Patent

CA 1094721

Abstract of the Disclosure A process is provided, and the product of that process, for the production of improved silica filled rubbery vulcanizates in which process a mixture is prepared com- prising 100 parts by weight of a vulcanizable hydrocarbyl polymer containing hydroxyl groups, about 5 to about 100 parts by weight of silica and about 1 to about 10 parts by weight of magnesium oxide, the mixture is subjected to shearing at an elevated temperature, cooled, vulcanization active compounds are incorporated and then vulcanized. Such vulcanizates may be generally used especially where light- coloured products are desired. - 1 -

276224

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