Additives for increasing the density of urethane foams prepared

Details Additives for increasing the density of urethane foams prepared Additives for increasing the density of urethane foams prepared

1974-01-08

1977-04-26

Ivy, C. Warren

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25AK, C08G 1300, C08G 1880

Patent

active

040200230

ABSTRACT:
Polyurethane-type compositions are prepared by reacting cyclic nitrile carbonates or oxalates with organic nucleophilic compounds, e.g., polyols, polythiols or polyamines in the presence of a sufficient amount of calcium and/or barium oxide to take up all or a portion of the carbon dioxide produced during the reaction between the cyclic nitrile carbonates and the nucleophilic compounds.

REFERENCES:
patent: 2650212 (1953-08-01), Windemuth
patent: 3531425 (1970-09-01), Burk
patent: 3652507 (1972-03-01), Burk
patent: 3702320 (1972-11-01), Fritok
patent: 3746667 (1973-07-01), Dieter
patent: 3766147 (1973-10-01), Wolgemuth

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