One-part moisture-curing urethane adhesive

Details One-part moisture-curing urethane adhesive One-part moisture-curing urethane adhesive

C - Chemistry, Metallurgy

09

J

C09J 175/04 (2006.01) C08G 18/10 (2006.01) C08K 5/20 (2006.01)

Patent

CA 2114276

The present invention is directed to a one-part (one-pack) moisture-curing urethane adhesive comprising a urethane prepolymer having isocyanate groups (NCO) at the terminus, said urethane prepolymer being a reaction product of a polyol and an excess amount of a polyisocyanate. The improvement comprises adding 0.01 to 5 % by weight of a gelling agent based on the whole amount of the adhesive, and optionally adding a thermoplastic urethane multi-block copolymer resin and a thixotropic agent selected from the group consisting of a hydrophilic colloidal silica and a polysiloxane-polyoxyalkylene copolymer. The adhesive of the present invention can obviate float or glass slippage in the adhesive application of window glass of automobiles.

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