Process for preparing isocyanurate group-containing polyisocyana

Details Process for preparing isocyanurate group-containing polyisocyana Process for preparing isocyanurate group-containing polyisocyana

1996-06-21

1998-03-03

Gorr, Rachel

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

25218222, 544193, 544221, 544222, 528 49, C08G 1879

Patent

active

057235643

ABSTRACT:
A process for the preparation of isocyanurate group-containing polyisocyanates in solvents which are inert towards isocyanate groups by reacting 0.2 to 1.5% of the isocyanate groups of diisocyanatotoluene with an aliphatic monohydric alcohol having 6 to 22 carbon atoms and subsequently trimerizing at least a portion of the isocyanate groups of the urethanized diisocyanates in the form of 40 to 70 wt. % solutions in lacquer solvents which are inert towards isocyanate groups, and the use of these polyisocyanates in two-component polyurethane coating compositions.

REFERENCES:
patent: 3996223 (1976-12-01), Gupta et al.
patent: 5064960 (1991-11-01), Pedain et al.
patent: 5369207 (1994-11-01), Wolff et al.

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