Olefinic siloxanes as platinum inhibitors

Details Olefinic siloxanes as platinum inhibitors Olefinic siloxanes as platinum inhibitors

1974-12-02

1976-11-02

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 465G, 260 465H, 2604482Q, 260825, C08G 7704

Patent

active

039896676

ABSTRACT:
Olefinic siloxanes which are inhibitors for platinum catalyst can be made by the reaction of secondary or tertiary acetylenic alcohols with siloxanes having silicon-bonded-hydrogen atoms. These olefinic siloxanes inhibit the platinum catalyst such that it will not catalyze the addition of SiH to aliphatic unsaturation at room temperature and does not inhibit the reaction at elevated temperatures. These olefinic siloxanes contain from 3 to 10 siloxane units with a total of at least three units from at least one RHSiO and/or R.sub.2 HSiO.sub.0..sub.5, at least one ##EQU1## and the remaining siloxane units being ##EQU2##

REFERENCES:
patent: 3445420 (1969-05-01), Kookootsedes et al.
patent: 3697473 (1972-10-01), Polmanteer et al.

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