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Method for bonding silicone elastomers to metal substrates

  • US 4,348,426 A
  • Filed: 06/22/1981
  • Issued: 09/07/1982
  • Est. Priority Date: 06/22/1981
  • Status: Expired due to Term
First Claim
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1. 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.

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