Adhesion of silicone elastomer to polyurethane

Details Adhesion of silicone elastomer to polyurethane Adhesion of silicone elastomer to polyurethane

1986-10-02

1987-07-21

Page, Thurman K.

Stock material or miscellaneous articles

Composite

Of polyamidoester

4274121, 4283084, 4283193, 428447, 428448, B32B 2700, B32B 514, B32B 904, B05D 136

Patent

active

046818081

ABSTRACT:
When a silicone elastomeric coating is applied over a polyurethane foam to protect it, an adhesion problem arises. It has been found that a coating of from 0.05 to 0.2 grams per square foot of surface of a silane of the formula ZSi (OR).sub.3, where Z is an amine functional radical and R is a monovalent hydrocarbon radical having from 1 to 6 carbon atoms, applied to the polyurethane foam under the silicone elastomeric coating greatly improves the adhesion between them. The silicone elastomeric coating is a particular type of tin catalyzed silicone coating comprising a particular organosilicon resin, a hydroxy-ended silicone polymer, and filler.

REFERENCES:
patent: 3619256 (1971-11-01), Pepe et al.
patent: 4311737 (1982-01-01), Ishizaka et al.
patent: 4332844 (1982-06-01), Hamada et al.
patent: 4471007 (1984-09-01), Pate
patent: 4486565 (1984-12-01), Benjamin
patent: 4595610 (1986-06-01), Fey et al.

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