Platinum hydrosilylation catalyst and method for making

Details Platinum hydrosilylation catalyst and method for making Platinum hydrosilylation catalyst and method for making

1998-08-13

2000-02-29

Wood, Elizabeth D.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

502224, 502229, 502230, 502232, 502240, 502258, 502261, 502262, B01J 3100, B01J 2706, B01J 2106

Patent

active

060309199

ABSTRACT:
A method is provided for making a platinum hydrosilylation catalyst by equilibrating a mixture of an alkenylpolysiloxane and a cycloalkylpolysiloxane in the presence of a haloplatinic acid and thereafter treating the resulting equilibrate with a base. Improved rate of cure and a reduction in ppm levels of platinum required to effect hydrosilylation are achieved.

REFERENCES:
patent: 3419593 (1968-12-01), Williug
patent: 3715334 (1973-02-01), Karstedt
patent: 5789334 (1998-08-01), Nakanishi et al.
"Advances in Organometallic Chemistry", by J. L. Spier, vol. 17, F.G.A. Stone, R. West, Eds. (Academic Press, NY 1979) pp. 407-447, no month available.

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