Back to results
US 4,348,426 AGranted
Method for bonding silicone elastomers to metal substrates
AssigneeLord Corporation
InventorsDonald R. Blenner, Robert A. Auerbach, Herman V. Boenig
Life of this patent
Estimating the term…
Abstract
Adhesion of silicone elastomers to metal substrates, especially zinc phosphatized metal substrates, is significantly improved by exposing the substrate to a glow discharge plasma selected from the group consisting of at least one inert gas, at least one organosilicon compound or a combination thereof, prior to the application of any adhesive materials to such substrates.
Claims9
A method for bonding vulcanizable silicone elastomer compositions to phosphatized metal substrates comprising:
- (a) exposing to a first glow discharge plasma of a gaseous medium consisting essentially of at least one non-reactive gas at least one phosphatized metal element;
- (b) applying over at least one plasma-exposed surface of said phosphatized metal element an adhesive composition suitable for bonding silicone elastomers to metal;
- (c) contacting said adhesively-coated surface of said plasma-exposed phosphatized metal element with a vulcanizable silicone elastomer composition;
- and
- (d) subjecting the resultant assembly to conditions sufficient to vulcanize said elastomer and cure said adhesive.
2 more elements
Dependencies are inferred from the claim text.