Preparation of polyisocyanates containing isocyanurate groups an

Details Preparation of polyisocyanates containing isocyanurate groups an Preparation of polyisocyanates containing isocyanurate groups an

1994-12-15

1996-02-06

Seidleck, James J.

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...

528 53, 528 54, 528 73, 544193, C08G 1820, C08G 1816

Patent

active

054896630

ABSTRACT:
Polyisocyanates containing isocyanurate groups are prepared by a partial trimerization of (cyclo)aliphatic diisocyanates in the presence of at least one trimerization catalyst selected from the group consisting of tetraalkylammonium alkyl carbonates of the formula (I) ##STR1## (quaternary ammonioalkyl) carbonates having a betaine structure of the formula (II) ##STR2## and the preferred use of the polyisocyanates containing isocyanurate groups which are obtainable in this way is aspolyisocyanate component in polyurethane finishes.

REFERENCES:
patent: 2635100 (1953-04-01), Werntz
patent: 3703520 (1972-11-01), Carleton et al.
patent: 3980594 (1976-09-01), Fabres et al.
patent: 4040992 (1977-08-01), Bechara et al.
patent: 4454317 (1984-06-01), Disteldorf et al.
patent: 4530796 (1985-07-01), Mattner et al.
patent: 4731427 (1988-03-01), Younes
patent: 5013838 (1991-05-01), Schall
EPO Search Report dated Mar. 19, 1995; Translation of EPO Search Report.

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