Microcellular polyurethane elastomers

Details Microcellular polyurethane elastomers Microcellular polyurethane elastomers

1992-01-28

1993-08-10

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521106, 521120, 521122, 521123, 521159, C08G 1814

Patent

active

052349640

ABSTRACT:
Microcellular polyurethane elastomers having nonpeelable skin surfaces having densities ranging from 0.1-1.1 gm/cm.sup.3 can be made from conventionally employed reactants using carbon dioxide gas as the sole source of blowing agent resulting from the H.sub.2 O/-NCO reaction when carried out in an admixture with nonhydratable particulate inorganic salts.

REFERENCES:
patent: 4116893 (1978-09-01), Flanagan
patent: 4240950 (1980-12-01), von Bonin et al.
patent: 4243755 (1981-01-01), Marx et al.
patent: 4282329 (1981-08-01), von Bonin et al.
patent: 4288564 (1981-09-01), Conover et al.
patent: 4882363 (1989-11-01), Neuhaus et al.
patent: 4968724 (1990-11-01), Mascioli
Clatty, J. L. R. and Harasin, S. J., "Performance of Alternate Blowing Agents to Chlorofluorocarbons in RIM Structural and Elastomeric Polyurethane Foams", 32nd Annual Polyurethane Technical/Marketing Conference, Oct. 1-4, 1989, pp. 634-637.

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