Pasty compositions for crosslinking organopolysiloxanes to silic

Details Pasty compositions for crosslinking organopolysiloxanes to silic Pasty compositions for crosslinking organopolysiloxanes to silic

1977-09-26

1979-11-13

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

252428, 252431C, 525477, C08L 8304

Patent

active

041743385

ABSTRACT:
A pasty composition for the room temperature crosslinking and curing of a vulcanizable organopolysiloxane, comprising a crosslinking agent for an organopolysiloxane, a curing catalyst therefor, and about 3-40% by weight of the total amount of the pasty composition of active hydrophilic silica as a thickener. The pasty composition may additionally contain up to about 40% by weight of at least one inactive filler. Advantageously, the organopolysiloxane is in one tube and the pasty composition is in another; lengths of material are squeezed out in easily ascertained proportions and are mixed in the presence of water, e.g. water vapor in the atmosphere, the mixture setting to a silicone rubber.

REFERENCES:
patent: 3792147 (1974-02-01), Wohlfarth et al.
patent: 3850971 (1974-11-01), Termin et al.
patent: 3957683 (1976-05-01), Hittmair et al.

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