Method for producing a urethane elastomer

Details Method for producing a urethane elastomer Method for producing a urethane elastomer

C - Chemistry, Metallurgy

08

G

402/139

C08G 18/65 (2006.01) C08G 18/08 (2006.01) C08G 18/10 (2006.01)

Patent

CA 1127794

Abstract of the Disclosure A method for producing a urethane elastomer is disclosed. The method involves mixing a suitable triazole with an isocyanate terminated prepolymer while the prepolymer is at a temperature sufficiently high that it is a liquid. The proportion of triazole used can range from 0.1 to 1.0 equivalent per equivalent of isocyanate in the prepolymer, and must be suf- ficient to increase that pot life of a mixture of the prepolymer with a diamine, but insufficient to cause substantial impairment of the physical properties of the cured elastomer. A substantially equivalent amount of a diamine is then mixed with the stabilized prepolymer, and the resulting composition is heated to produce the elastomer.

298079

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