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US 4,396,450 AGranted
Method for bonding elastomers to metals
AssigneeLord Corporation
InventorsDonald R. Blenner, Herman V. Boenig
Life of this patent
Estimating the term…
Abstract
Environmental resistance of rubber-metal bonded assemblies is significantly improved by a process comprising treating such substrates in a "low temperature" plasma comprising at least one sulfur-containing reactive monomer.
Claims13
A method for bonding vulcanizable natural and synthetic rubbers to metal substrates comprising:
- (a) exposing at least one metal element to a plasma of at least one sulfur-containing reactive monomer selected from the group consisting of thiophene, 2-ethylthiophene and tetrahydrothiophene;
- (b) applying to at least one plasma-exposed surface of said metal element an adhesive composition suitable for bonding natural and synthetic rubber to metal;
- (c) contacting such adhesively-coated metal element with a vulcanizable rubber composition;
- and
- (d) subjecting the resultant assembly to conditions sufficient to vulcanize said rubber and cure said adhesive.
2 more elements
A method for bonding vulcanizable natural and synthetic rubbers to metal substrates comprising:
- (a) exposing at least one metal substrate to a plasma of at least one non-reactive gas;
- (b) exposing at least one of such non-reactive gas plasma-exposed substrates to a plasma of at least one sulfur-containing reactive monomer selected from a group consisting of thiophene, 2-ethylthiophene and tetrahydrothiophene;
- (c) applying to at least one reactive monomer plasma-exposed surface of said metal element an adhesive composition suitable for bonding natural and synthetic rubber to metal;
- (d) contacting such adhesively-coated metal element with a vulcanizable rubber composition;
- and
- (e) subjecting the resultant assembly to conditions sufficient to vulcanize said rubber composition and cure said adhesive.
3 more elements
Dependencies are inferred from the claim text.