Rim nylon-based urethane block polymer composition

Details Rim nylon-based urethane block polymer composition Rim nylon-based urethane block polymer composition

C - Chemistry, Metallurgy

08

G

400/2012

C08G 18/66 (2006.01) C08G 18/12 (2006.01) C08G 18/28 (2006.01) C08G 18/48 (2006.01) C08G 18/50 (2006.01)

Patent

CA 1234942

ABSTRACT A two part RIM nylon-based urethane block polymer consists of an anionic metal salt catalyst in minor proportions and a prepolymer consisting of the reaction product of a diisocyanate with a mixture of a polymeric triamine having primary amine groups and a polyether diol in a large excess of a ring lactam which serves as a reaction diluent. The prepolymer preparation process is characterized by the immediate formation of a visible high molecular weight polymer gel which redissolves with continued agitation. No free or extractable polymers, diols or isocyanate is observed in the polymer product.

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