Energy-attenuating polyurethanes

Details Energy-attenuating polyurethanes Energy-attenuating polyurethanes

1986-07-03

1988-02-02

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521159, 521161, 521167, 521172, 521173, 521175, 521176, 528 59, 528 60, 528 65, 528 66, 528 75, 528 76, 528 77, 528 78, 528 80, 528 81, 528 83, C08G 1848

Patent

active

047229462

ABSTRACT:
A non-liquid, energy-absorbing polyurethane is derived from the process which comprises reacting a mixture of linear and branched polyols, a polyisocyanate and, optionally, a blowing agent, under polyurethane-forming conditions at an isocyanate index of from about 65 to about 85.

REFERENCES:
patent: 3781231 (1973-12-01), Janssen et al.
patent: 4209593 (1980-06-01), Khanna
patent: 4230168 (1980-10-01), Kaneda et al.
patent: 4287307 (1981-09-01), Hostettler
patent: 4346205 (1982-08-01), Hiles et al.
patent: 4476258 (1984-10-01), Hiles

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