Alkyl substituted piperazines as chain extenders in polyurea ela

Details Alkyl substituted piperazines as chain extenders in polyurea ela Alkyl substituted piperazines as chain extenders in polyurea ela

1990-05-29

1992-12-15

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 60, 528 64, 528 77, 528 78, 521159, 521160, 521163, C08G 1828, C08G 1877

Patent

active

051718197

ABSTRACT:
A polyurea elastomer is disclosed. The elastomer includes an isocyanate, an amine terminated polyoxyalkylene polyol, and a chain extender. The isocyanate is preferably a quasi-prepolymer of an isocyanate and a material selected from at least one polyol, a high molecular weight polyoxyalkyleneamine or a combination thereof. The chain extender includes at least an alkyl substituted piperazine.

REFERENCES:
patent: 4530941 (1985-07-01), Turner et al.

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