Process for the production of isocyanurate polyisocyanates, the

Details Process for the production of isocyanurate polyisocyanates, the Process for the production of isocyanurate polyisocyanates, the

1991-05-06

1992-09-01

Kight, III, John

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

2521822, 25218221, 25218222, 528 45, 528 59, 528 76, 528 80, 528 85, 528 49, 544222, 560330, C07D25134, C08G 1879

Patent

active

051440318

ABSTRACT:
The present invention relates to a process for the production of isocyanurate group-containing polyisocyanates by partially trimerizing the isocyanate groups of (cyclo)aliphatic diisocyanates in the presence of catalysts which accelerate the trimerization of isocyanate groups and optionally in the presence of an inert solvent, terminating the trimerization reaction at the desired degree of trimerization and removing unreacted starting diisocyanate and any other volatile constituents, characterized in that at least one monohydric alcohol containing ester groups corresponding to the formula ##STR1## is added to the reaction mixture prior to removing the excess starting diisocyanate in a quantity of 1 to 30% by weight, based on the weight of the diisocyanate starting material, and reacted with a portion of the isocyanate groups to form urethane groups, provided that after the trimerization and urethanization reactions, the reaction mixture contains at least 10% by weigth of unreacted starting diisocyanate, based on the weight of the reaction mixture excluding the weight of inert solvent.
The present invention also relates to the isocyanurate polyisocyanates obtained by this process and to their use, optionally after blocking with blocking agents for isocyanate groups, for the production of polyurethane plastics and, more particularly, two-component polyurethane coating compositions.

REFERENCES:
patent: 3487080 (1969-12-01), Matsui et al.
patent: 3635848 (1972-01-01), Rambosek
patent: 3891579 (1975-06-01), Cenker et al.
patent: 4128537 (1978-12-01), Markiewitz
patent: 4145544 (1979-03-01), Kuehn
patent: 4159376 (1979-06-01), Kuehn
patent: 4302351 (1981-11-01), Gras et al.
patent: 4324879 (1982-04-01), Bock et al.
patent: 4326043 (1982-04-01), Narayan et al.
patent: 4359541 (1982-11-01), Patton, Jr. et al.
patent: 4412073 (1983-10-01), Robin
patent: 4485226 (1984-11-01), Noll et al.
patent: 4487928 (1984-12-01), Richter et al.
patent: 4537961 (1985-08-01), Robin
patent: 4604418 (1986-08-01), Shindo et al.
patent: 4675401 (1987-06-01), Robin
patent: 4789705 (1988-12-01), Kase et al.
patent: 4870152 (1989-09-01), Meixner et al.
patent: 5043092 (1991-08-01), Pedain et al.
patent: 5064960 (1991-11-01), Pedain et al.
patent: 5076958 (1991-12-01), Pedain et al.

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