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US 5,496,906 AGranted
Production of nitrosamine-free silicone articles
AssigneeGeneral Electric Company
InventorsEdward M. Jeram, Larry N. Lewis
Life of this patent
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Abstract
The present invention relates to a method for making nitrosamine-free silicone articles by treating vinyl-containing organopolysiloxanes with an effective amount of an acid.
Claims6
A method for making nitrosamine-free silicone articles comprising the following steps:
- (a) mixing (A) a vinyl-containing organopolysiloxane with (C) a filler;
- (b) adding an amount of acid solution to the mixture of said step (a) effective to eliminate nitrosamine,
- (c) adding (B) a silicon hydride siloxane or silicon hydride siloxane fluid and (D) a catalytic amount of hydrosilation catalyst to the mixture of said step (b) and cooking said mixture at temperatures of from about 50.degree. to 100.degree. C. for 0.5 to 2.0 hours;
- (d) curing the mixture of said step (c);
- and
- (e) post baking the cured mixture of said step (d).
3 more elements
Dependencies are inferred from the claim text.