Polyureaurethanes having improved low temperature properties bas

Details Polyureaurethanes having improved low temperature properties bas Polyureaurethanes having improved low temperature properties bas

1988-02-08

1989-06-27

Welsh, Maurice J.

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...

C08G 1800

Patent

active

048431389

ABSTRACT:
Improved low temperature properties of polyureaurethane are obtained, such as low glass transition temperatures and reduced bending moduli at -400.degree. C., by the use of relatively high moleuclar weight polyether polyol intermediates. The polyureaurethane is made by reacting the polyether polyol intermediate with a diisocyanate and subsequent cure with a metal halide salt complex of methylenedianiline.

REFERENCES:
patent: 3755261 (1973-08-01), VanGulick
patent: 4330454 (1982-05-01), Kimball
patent: 4463155 (1984-07-01), Kibler
patent: 4517331 (1985-05-01), Parker et al.

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