Preparation of single-phase, urethane prepolymers from...

Details Preparation of single-phase, urethane prepolymers from... Preparation of single-phase, urethane prepolymers from...

C - Chemistry, Metallurgy

08

G

402/127, 402/157

C08G 18/62 (2006.01) C08G 18/69 (2006.01) C08G 18/77 (2006.01) C08G 73/06 (2006.01)

Patent

CA 1175995

Abstract of the Disclosure A process is described for the preparation of urethane prepolymers from hydroxy-terminated diene polymers and normally liquid, relatively non-volatile, aromatic polyisocy- anates. The prepolymers are made at a temperature above about 150°C. to provide urethane prepolymer products that resist the tendency to form multiple phases or layers upon storage at room temperature.

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