Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1974-12-02
1976-11-02
Jacobs, Lewis T.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
252429R, 252430, 260 465G, 260825, C08G 7704
Patent
active
039896668
ABSTRACT:
A crosslinker-platinum catalyst-inhibitor is prepared by heating in a closed system for 10 to 30 hours at 50.degree. C. to 90.degree. C. a mixture of a siloxane having at least three silicone-bonded hydrogen atoms, an acetylenic alcohol and a platinum catalyst and then removing the unreacted acetylenic alcohol at reduced pressure and 20.degree. C. to 30.degree. C., a complex product is obtained which when combined with a vinyl containing siloxane polymer has an extended shelf-life but can be cured by heating. The complex product functions as a crosslinker, a catalyst and an inhibitor which retards the reactions of silicon-bonded hydrogen atoms with aliphatic unsaturation catalyzed by platinum.
REFERENCES:
patent: 3445420 (1969-05-01), Kookootsedes et al.
patent: 3715334 (1973-02-01), Karstedt
Borrousch Roger H.
Dow Corning Corporation
Jacobs Lewis T.
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