Moisture-curable polyurethane hot-melt adhesive

Details Moisture-curable polyurethane hot-melt adhesive Moisture-curable polyurethane hot-melt adhesive

2005-04-07

2009-11-03

Eashoo, Mark (Department: 1796)

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

Synthetic resins

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

C524S589000, C524S590000, C525S452000, C525S403000

Reexamination Certificate

active

07612151

ABSTRACT:
A moisture-curable polyurethane hot-melt adhesive, which includes a urethane prepolymer obtained by a reaction between polyisocyanate and polyols, wherein the polyols contain: long-chain aliphatic polyester polyol (A) represented by a general formula (I); aliphatic polyether polyol (B) having a number average molecular weight of 3,000 to 15,000; and aromatic polyester polyol (CI) which has a number average molecular weight of 1,000 to 5,000 and has a glass-transition temperature of 40° C. or more;(in the general formula (I), R1and R2each independently represent a straight chain alkylene group wherein the number of carbon atoms in the group is an even number, the sum of the number of carbon atoms in R1and R2is 12 or more, and n represents a number of 3 to 40).

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