Reactive hot-melt elastic sealant composition

Details Reactive hot-melt elastic sealant composition Reactive hot-melt elastic sealant composition

1994-01-07

1997-05-20

Niland, Patrick

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524589, 528 44, 528 59, 528 65, 528 66, 528 85, C08J 300, C08K 320, C08L 7500, C08G 1800

Patent

active

056313187

ABSTRACT:
A reactive hot-melt elastic sealant composition which comprises as the main components (A) a polyurethane prepolymer which is prepared by reacting a polyether polyol having a hydroxyl group at the terminus and having a weight average molecular weight of 6,000 to 40,000 and an excess amount of a polyisocyanate compound, and (B) a themoplastic urethane multi-block copolymer resin, in admixture with conventional additives, which has excellent durability, cold resistance, initial adhesive force and maintenance of adhesive force for a long period of time and is useful particularly for adhesive seal of parts in automobiles.

REFERENCES:
patent: 3813380 (1974-05-01), Bock et al.
patent: 4985491 (1991-01-01), Reisch
patent: 4985535 (1991-01-01), Takada et al.
patent: 5039418 (1991-08-01), Schucker

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