Hot melt adhesive containing hydroxyl-functional ethylene-vinyl

Details Hot melt adhesive containing hydroxyl-functional ethylene-vinyl Hot melt adhesive containing hydroxyl-functional ethylene-vinyl

1988-06-03

1990-03-13

Jacobs, Lewis T.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

526329, C08L 2308, C08L 3104

Patent

active

049084089

ABSTRACT:
A composition for a cross-linkable hot melt adhesive is provided and is formed by an ethylene-vinyl acetate copolymer containing primary hydroxyl functions and a blocked polyisocyanate. This composition when associated with a tackifying resin, which can also serve as blocking agent of the polyisocyanate, is a cross-linkable hot melt adhesive. The adhesive is used at a temperature at least equal to splitting temperature of the isocyanate functions of the polyisocyanate. The temperature at which such adhesives retains adherence can reach about 200.degree.-220.degree. C.

REFERENCES:
patent: 3808294 (1974-04-01), Sato et al.
patent: 3931077 (1976-01-01), Uchigaki et al.
patent: 4404320 (1983-09-01), Goto et al.
patent: 4410595 (1983-10-01), Matsumoto et al.
patent: 4839422 (1987-06-01), McElrath et al.

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