Process for the production of foams

Details Process for the production of foams Process for the production of foams

1976-05-28

1978-01-24

Rzucidlo, Eugene C.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25AE, 260 25AW, 260 25AZ, C08G 1814

Patent

active

040703100

ABSTRACT:
This invention relates to a process for the production of polyurethane foams in closed molds using mixtures of organic polyisocyanates with certain compounds which liberate carbon dioxide under the catalytic influence of basic compounds. In this process a mixture of polyisocyanates and compounds which liberate carbon dioxide under the catalytic influence of basic compounds is reacted with organic compounds containing hydrogen atoms which are reactive with isocyanate groups, which organic compounds are mixed with basic compounds and/or have basic compounds chemically built into them. The process is suitable for the production of any polyurethane foams in a closed mold, but is preferably applied to the production of semi-hard and particularly of hard polyurethane foams having a dense outer skin.

REFERENCES:
patent: 3074894 (1963-01-01), Loew et al.
patent: 3222302 (1965-12-01), Bollert et al.
patent: 3242108 (1966-03-01), McGary, Jr. et al.
patent: 3505137 (1970-04-01), Kliene
patent: 3573232 (1971-03-01), Kloker et al.
patent: 3608008 (1971-09-01), Soukup
patent: 3666848 (1972-05-01), Harper
patent: 3849349 (1974-11-01), Frisch et al.
patent: 3993606 (1976-11-01), VON Bonin et al.

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