Microcellular foams

Details Microcellular foams Microcellular foams

1975-07-31

1977-05-03

Rzucidlo, Eugene C.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25A, 260 25AY, 260 775R, 260858, 260859R, 264 54, C08G 1814

Patent

active

040213781

ABSTRACT:
Microcellular urethane foams are prepared by causing the in situ formation of a urethane polymer from a cyclic nitrile carbonate and a polyol in a matrix of a thermoplastic polymer, preferably a thermoplastic polyurethane. The composition is preferably prepared by mixing the reactant ingredients in the dry powdered state and subsequently heating them in a closed container in the shape of the desired article. The amount of ingredients selected is that which will produce a molded article of the desired density.

REFERENCES:
patent: 3523093 (1970-08-01), Stamberger
patent: 3652507 (1972-03-01), Burk, Jr. et al.
patent: 3869413 (1975-03-01), Blankenship
patent: 3935132 (1976-01-01), Gerkin et al.

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