Process for preparing a reduced-color isocyanurate-functional po

Details Process for preparing a reduced-color isocyanurate-functional po Process for preparing a reduced-color isocyanurate-functional po

1998-12-29

2000-07-25

Killos, Paul J.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

560344, 528 48, 528 67, C07D25132

Patent

active

06093817&

ABSTRACT:
A reduced-color isocyanurate-functional polyisocyanate is prepared by partially trimerizing 1-isocyanato-3,3,5-trimethyl-5-isocyanatomethylcyclohexane (IPDI) having a low total chlorine content of less than 80 mg/kg in the presence of a catalyst, thereby resulting in a product isocyanurate-functional polyisocyanate having a content of free NCO groups of between 10 and 22% and a residual monomer content of less than 0.7%.

REFERENCES:
patent: 3995997 (1976-12-01), Boehmke et al.
patent: 4288586 (1981-09-01), Bock et al.
patent: 4454317 (1984-06-01), Disteldorf et al.
patent: 4596679 (1986-06-01), Hellbach et al.
patent: 5436336 (1995-07-01), Bruchmann et al.
patent: 5798431 (1998-08-01), Brahm et al.

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