Process for the preparation of heat-stable polyurethane urea...

Details Process for the preparation of heat-stable polyurethane urea... Process for the preparation of heat-stable polyurethane urea...

C - Chemistry, Metallurgy

08

G

402/140, 402/154

C08G 18/12 (2006.01) C08G 18/10 (2006.01) C08G 18/32 (2006.01) C08G 18/65 (2006.01)

Patent

CA 2031236

Mo3486 LeA 27,352 A PROCESS FOR THE PREPARATION OF HEAT-STABLE POLYURETHANE UREA ELASTOMERS ABSTRACT OF THE DISCLOSURE This invention relates to a process for preparing polyurethane urea elastomers by reacting (a) compounds containing at least two isocyanate-reactive groups and having a molecular weight in the range from about 400 to about 10,000; (b) polyisocyanates; and (c) aromatic diamines corresponding to the formula Image wherein R1 and R2 are independently hydrogen or alkyl.

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