Process for trimerizing organic polyisocyanates

Details Process for trimerizing organic polyisocyanates Process for trimerizing organic polyisocyanates

1984-04-30

1985-03-05

Ford, John M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

C07D25134

Patent

active

045032262

ABSTRACT:
A process for trimerizing organic polyisocyanates using a select catalyst comprising a quaternary ammonium carboxylic acid salt and a carboxylic acid halide or anhydride. The trimerization products are especially suitable for use in the preparation of polyurethane molding compositions.

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Kresta et al., "Cyclic Sulfonium Zwitterions", (ACS Symp. Ser. 1981), Anionic Polymerization, pp. 501-512.

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