Reactive hot-melt elastic sealant composition

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

C - Chemistry, Metallurgy

09

J

C09J 175/08 (2006.01) C08G 18/10 (2006.01) C09K 3/10 (2006.01)

Patent

CA 2047160

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

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