Preparation of isocyanurates

Details Preparation of isocyanurates Preparation of isocyanurates

1977-07-27

1979-03-20

Ford, John M.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

544193, C07D25134

Patent

active

041455444

ABSTRACT:
Disclosed is a process for the preparation of ethylenically unsaturated isocyanurates which comprises a first step of trimerizing an aromatic polyisocyanate in the presence of an isocyanate trimerization catalyst and an ethylenically unsaturated solvent wherein at least 20% by weight of the solvent is an ethylenically unsaturated polar solvent, to form an isocyanate-containing isocyanurate and a second step of reacting the isocyanate-containing isocyanurate with a monohydric alcohol containing a vinylidene group to form an ethylenically unsaturated isocyanurate. The resulting solution of an ethylenically unsaturated isocyanurate dissolved in an ethylenically unsaturated solvent may be cured to form resins having excellent high temperature resistant properties.

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patent: 2801244 (1957-07-01), Balon
patent: 2952665 (1960-09-01), Bunge et al.
patent: 3179626 (1965-04-01), Beitchman
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patent: 3573259 (1971-03-01), Argabright et al.
patent: 3631000 (1971-12-01), Argabright et al.
patent: 3817937 (1974-06-01), Argabright et al.
patent: 4059610 (1977-11-01), Handa et al.

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