Catalytic trimerization of polyisocyanates

Details Catalytic trimerization of polyisocyanates Catalytic trimerization of polyisocyanates

1976-03-29

1978-01-10

Rzucidlo, Eugene C.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25AB, 260 25AC, 260 75NB, 260 75NC, 260 775AB, 260 775AC, 260 775NC, C08G 1818

Patent

active

040678300

ABSTRACT:
Compounds (aminimides) of the class wherein a negatively charged nitrogen atom of an acylamide is directly bonded to a cationic nitrogen atom having one hydroxyethyl and two methyl substituents represent uniquely effective catalysts for the trimerization of the isocyanate radical. These aminimides are especially useful as catalysts for the preparation of rigid polyisocyanate-polyisocyanurate foams.

REFERENCES:
patent: 3485806 (1969-12-01), Bloomquist et al.
patent: 3723364 (1973-03-01), McLaughlin et al.
patent: 3745133 (1973-07-01), Communale et al.
patent: 3925284 (1975-12-01), Carleton et al.

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