Vulcanizates containing silica

Details Vulcanizates containing silica Vulcanizates containing silica

1978-03-07

1979-04-17

Marquis, Melvyn I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 23AR, 260 23H, 260 237H, 260 237M, 260 237B, 260 237R, 260 4231, 260 4232, 260 4233, 260 4234, 260 4235, 260 4239, 260 4241, 260 4257, C08K 336

Patent

active

041500156

ABSTRACT:
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 comprising 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-colored products are desired.

REFERENCES:
patent: 3438933 (1969-04-01), Bartsch
patent: 3928282 (1975-12-01), Lohr et al.
patent: 4059558 (1977-11-01), Golombeck et al.

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