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US 7,914,895 B2Granted
Moisture curable hot melt adhesive composition
AssigneeH.B. Fuller Company
InventorKevin J. Reid
Life of this patent
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Abstract
A moisture curable hot melt adhesive composition includes a polyurethane prepolymer, optionally a tackifying resin, and optionally a thermoplastic polymer. The polyurethane prepolymer includes a reaction product of an amorphous polyester polyol, a polyisocyanate, and a crystalline monofunctional alcohol that has a melting point of no less than about 80° C.
Claims19
A moisture curable hot melt adhesive composition comprising:
- a polyurethane prepolymer that comprises a reaction product of
- an amorphous polyester polyol that is a reaction product of a monomeric polyol and a dimerized fatty acid,
- a polyisocyanate, and
- a crystalline monofunctional alcohol having a melting point of no less than about 80° C.;
- a thermoplastic polymer that is an ethylene vinyl acetate copolymer;
- and
- optionally a tackifying resin,
- wherein the polyester polyol is tailored to the polarity of the thermoplastic polymer such that the sum of the average equivalent weight of the monomeric polyol and the dimerized fatty acid is from about 300 to about 1500.
5 more elements
A moisture curable hot melt adhesive composition comprising
- a polyurethane prepolymer that comprises a reaction product of
- an amorphous polyester polyol that is a reaction product of a monomeric polyol and a dimerized fatty acid,
- a polyisocyanate, and
- a crystalline monofunctional alcohol having a inching point of no less than about 80° C.;
- optionally a tackifying resin;
- and
- optionally a thermoplastic polymer,
- wherein said composition is free of a crystalline or a semi crystalline polyester polyol, and exhibits a peel adhesion of no less than 80% wood failure at 80° C.
5 more elements
Dependencies are inferred from the claim text.