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US 5,665,847 AGranted
Production of nitrosamine-free silicone articles
AssigneeGeneral Electric Company
InventorsLarry Neil Lewis, Edward Matthew Jeram
Life of this patent
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Abstract
The present invention relates to a method for making nitrosamine-free silicone articles by post baking in an inert atmosphere.
Claims7
A method for making nitrosamine-free silicone articles comprising the following steps:
- (a) mixing (A) a vinyl-containing organopolysiloxane;
- (B) a silicone hydride siloxane;
- (C) a filler;
- (D) a catalytic amount of catalyst;
- (b) curing the mixture of said step (a);
- and
- (c) post-baking the cured mixture of said step (b) in an atmosphere selected from the group consisting of helium, nitrogen, argon, carbon dioxide, methane and mixtures thereof whereby said cured silicone articles have a nitrosamine content below 1 ppb.
4 more elements
Dependencies are inferred from the claim text.