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US 4,600,651 AGranted
Fluoroelastomer laminates
AssigneeE. I. Du Pont de Nemours and Company
InventorsCarl A. Aufdermarsh, Robert J. Harder, Phillip P. Spiegelman
Life of this patent
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Abstract
Laminates prepared by co-curing terpolymers of tetrafluoroethylene, perfluoromethyl perfluorovinylether, and a halogen-containing cure site monomer with a second peroxide-curable elastomer. The laminates can be bonded to a variety of substrates.
Claims10
A laminate prepared from
- (a) a first layer of peroxide curable elastomer composition of a terpolymer of tetrafluoroethylene, a perfluoroalkyl perfluorovinylether wherein the alkyl group contains 1 to 5 carbon atoms, and up to about 2 mole percent of units derived from an ethylenically unsaturated compound having a bromo- or iodo-substituent in an amount sufficient to provide at least about 0.1 mole percent bromine or iodine in the resulting terpolymer, and
- (b) a second layer of peroxide curable elastomer composition of a polymer selected from the group consisting of
- (1) copolymers prepared from monomers consisting essentially of tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride and a bromo- or iodo cure site monomer;
- (2) silicone elastomers and
- (3) copolymers of tetrafluoroethylene and propylene, the laminate being co-cured and the first and second layers being directly bonded to each other.
2 more elements
A laminar structure consisting essentially of
- (a) a metal substrate
- (b) a peroxide curable elastomer composition of a polymer selected from the group consisting of
- (1) copolymers prepared from monomers consisting essentially of tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride and a bromo- or iodo-cure site monomer;
- (2) silicone elastomers;
- and
- (3) copolymers of tetrafluoroethylene and propylene
- (c) a peroxide curable perfluoroelastomer composition of a terpolymer of tetrafluoroethylene, a perfluoro alkyl perfluorovinylether wherein the alkyl group contains 1 to 5 carbon atoms, and up to about two mole percent of units derived from an ethylenically unsaturated compound having a bromo- or iodo-substituent in an amount sufficient to provide at least about 0.1 mole percent bromine or iodine in the resulting terpolymer,
- wherein (b) and (c) are co-cured and directly bonded to each other.
5 more elements
Dependencies are inferred from the claim text.