C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/5320, 260/44
C08L 91/00 (2006.01) C08G 77/398 (2006.01) C08L 83/04 (2006.01)
Patent
CA 1060462
ABSTRACT OF THE DISCLOSURE A process and composition for producing a cross- linking agent component for two-component room temperature vulcanizable silicone rubber composition comprising the reaction product of 25 to 75 parts of a silicate selected from the class consisting of alkyl silicates of the formula, Image and a liquid partial hydrolysis product of the aforementioned alkyl silicantes, 10 to 40 parts of a polysiloxane fluid of the formula, Image where the polysiloxane fluid is chain-stopped with -OH groups and Image units, where the ratio of the Image units to -OH radicals varies from 3:1 to 1:1 and 10 to 40 parts of a metal salt of an acid selected from the class consisting of monocarboxylic acids and dicarboxylic acid and the metal ion is selected from lead to manganese in the electromotive series of metals and is, more preferably, tin, and R1, R2 and R3 are selected from the class consisting of monovalent hydrocarbon radicals, halogenated monovalent hydrocarbon radicals and mixtures thereof, a is 0 or 1, and n varies from 1.9 to 2.1.
241886
Smith Robert A.
Surprenant Richard P.
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