Process for the preparation of polyisocyanates containing uretha

Details Process for the preparation of polyisocyanates containing uretha Process for the preparation of polyisocyanates containing uretha

1977-09-12

1978-11-07

Cockeram, H.S.

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 65, 528 59, C08G 1879

Patent

active

041245695

ABSTRACT:
The present invention is concerned with a process for producing biuret polyisocyanates and the polyisocyanates so produced. These isocyanates are produced by the reaction of at least about a four fold molar excess of a diisocyanate having aliphatically bound isocyanate groups with amino alcohols having a particular structure at a temperature between about 90 and 200.degree. C. The amino alcohols contain at least three carbon atoms, have their hydroxyl and amino groups separated by at least two carbon atoms, and may contain urea, urethane, ether or amino bonds. The present invention is also concerned with a process for producing two component and one component moisture curing lacquers using the biuret polyisocyanates of the present invention and the lacquers so produced.

REFERENCES:
patent: 3647848 (1972-03-01), Wagner et al.
patent: 3824266 (1974-07-01), Dietrich et al.
patent: 3862973 (1975-01-01), Dietrich et al.
patent: 3903126 (1975-09-01), Woerner et al.
patent: 3903127 (1975-09-01), Wagner et al.
patent: 3943158 (1976-03-01), Dietrich et al.
patent: 3976622 (1976-08-01), Wagner et al.

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