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US 4,377,646 AGranted
Process for the production of foamed poly(epoxy-polyisocyanate)silicate polymers
OwnerDavid H. Blountinventor
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Abstract
Poly(epoxy-polyisocyanate) silicate foamed products are produced by mixing and reactng an epoxide compound, an oxidated silicon compound and a polyisocyanate in the presence of a Lewis acid. The foam produced by this process may be utilized for thermal and sound insulation.
Claims20
The process for the production of foamed poly(epoxide-polyisocyanate-silicate) product by mixing and reacting the following components:
- (a) an organic mono-or polyepoxide compound, 1 to 200 parts by weight;
- (b) an organic compound containing at least 2 isocyanate groups, 50 to 100 parts by weight;
- (c) a Lewis acid, up to 20% by weight, percentage based on weight of components (a) and (b);
- (d) an oxidated silicon compound, 1 to 50 parts by weight.
1 more element
Dependencies are inferred from the claim text.