Shelf-stable catalyst component for RTV silicone composition

Details Shelf-stable catalyst component for RTV silicone composition Shelf-stable catalyst component for RTV silicone composition

1981-02-26

1983-06-14

Briggs, Sr., Wilbert J.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

106309, 2521883R, 252428, 523351, 524425, 524865, 524866, 524906, 525477, 528 18, 528 22, C08L 8306

Patent

active

043884334

ABSTRACT:
A process for producing a shelf-stable catalyst component for a room temperature vulcanizable silicone rubber composition comprising (a) mixing a organopolysiloxane fluid with first from 1 to 15 percent by weight of the total amounts of the following ingredients (1) an alkyl silicate cross-linking agent (2) a catalytic promoter which is a tin salt and (3) a self-bonding additive which is nitrogen-functional self-bonding additive until there is a uniform mixture; (b) adding to the mixture from 10 to 250 parts of filler and mixing the ingredients to a uniform mixture wherein the mixture is heated at a temperature of at least 100.degree. C. for at least 1 hour so as to drive off moisture and form a stable base mixture and then adding to the stable base mixture the rest of the cross-linking agent, the catalytic promoter and the shelf-bonding additive to form a self-stable uniform mixture.

REFERENCES:
patent: 3888815 (1975-06-01), Bessmer et al.
patent: 4175977 (1979-11-01), Heaton et al.

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