Urethane modified carbodimide-isocyanurate foams from organic po

Details Urethane modified carbodimide-isocyanurate foams from organic po Urethane modified carbodimide-isocyanurate foams from organic po

1974-12-26

1976-12-21

Ivy, C. Warren

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25AW, 260 25BF, C08G 1814, C08G 1850

Patent

active

039987663

ABSTRACT:
Rigid cellular foam compositions characterized by carbodiimide, isocyanurate and urethane linkages are prepared by the reaction of an organic polyisocyanate with certain oxyalkylated Mannich polyols employing an NCO/OH equivalent ratio of from about 2:1 to 10:1. The use of the oxyalkylated Mannich polyols in the amounts stated eliminates the need for carbodiimide and isocyanurate promoting catalysts.

REFERENCES:
patent: 3186969 (1965-01-01), Cox
patent: 3297597 (1967-01-01), Edwards
patent: 3620986 (1971-11-01), Diehr
patent: 3671470 (1972-06-01), Case
patent: 3725319 (1973-04-01), Frisch
patent: 3745133 (1973-07-01), Comunale

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