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US 5,008,340 AGranted
Curable adhesives
AssigneeRaychem Corporation
InventorsRobert Guerra, Pravin Soni
Life of this patent
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Abstract
A curable adhesive composition comprises a thermoplastic fluoropolymer, an elastomeric fluoropolymer, an ethylene copolymer and a crosslinking component. The composition preferably also comprises a tackifier. The crosslinking component preferably comprises a free radial generator such as a peroxide and a co-crosslinking agent comprising a multifunctional monomer. The adhesive is particularly useful with heat recoverable articles and bonds exceptionally well to fluoropolymer substrates.
Claims12
An adhesive composition comprising:
- (a) about 30 to about 50% by weight of a thermoplastic vinylidene fluoride homopolymer or copolymer;
- (b) about 5 to about 40% by weight of an elastomeric vinylidene fluoride;
- (c) about 5 to about 25% by weight of a thermoplastic ethylene copolymer comprising at least 50 mole% of units derived from ethylene and at least 5 mole % of units derived from at least one unsaturated comonomer containing at least one polar group;
- (d) about 1 to about 10% by weight of a crosslinking agent component;
- and
- (e) 0 to about 20% by weight of a tackifier;
- all percentages by weight being based on the total weight of the five components.
4 more elements
Dependencies are inferred from the claim text.