Low-temperature storage stable liquid diphenylmethane...

Details Low-temperature storage stable liquid diphenylmethane... Low-temperature storage stable liquid diphenylmethane...

C - Chemistry, Metallurgy

08

G

260/455.4, 260/4

C08G 18/80 (2006.01) C08G 18/10 (2006.01) C08G 18/48 (2006.01) C08G 18/76 (2006.01)

Patent

CA 1091684

LOW-TEMPERATURE STORAGE STABLE LIQUID DIPHENYLMETHANE DIISOCYANATES ABSTRACT OF THE DISCLOSURE The instant invention is directed to novel low temperature, storage stable liquid diphenylmethane diisocyanates and to the method of their preparation. The diisocyanates of the instant invention are produced by reacting diphenylmethane diisocyanates having a specified 2,4'-isomer content with polyoxyethylene glycols having molecular weights of from 150 to 1500. It has been surprisingly found that the products of the instant invention are both stable and liquid at -5°C for at least 48 hours. In fact, in many instances, the products of the instant invention show no tendency to crystallize even when stored at -22°C for 100 hours.

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