Storage stable, one part fluorosilicone gel compositions

Claim 1

In a one-part liquid fluorosilicone composition that cures to a gel by means of a platinum-catalyzed hydrosilylation reaction when heated, is stable for prolonged periods of time under ambient conditions and consists essentially of the product obtained by blending A. a liquid diorganovinylsiloxy terminated polydiorganosiloxane wherein at least 25 percent of the silicon atoms are bonded to a fluorine-containing hydrocarbon radical; B. a compatible liquid organohydrogensiloxane containing fluorinated hydrocarbon radicals bonded to silicon and having an average of more than two silicon bonded hydrogen atoms per molecule in an amount sufficient to provide a molar ratio of silicon bonded hydrogen atoms to vinyl radicals in said composition of from 0.5 to about 1.0; C. an amount sufficient to promote curing of said composition of a platinum-containing catalyst; and D. a platinum catalyst inhibitor, the improvement comprising the presence in said composition of at least one N,N,N'N'-tetraalkylalkylenediamine as the platinum catalyst inhibitor, where the alkyl portion of the diamine contains from 1 to 4 carbon atoms, the alkylene portion contains from 2 to 4 carbon atoms, and the amount of inhibitor is sufficient to inhibit curing of said composition in bulk form at 25° C. without impairing the ability of said composition to cure at temperatures above 100° C.