Preparation of biureto polyisocyanates

Details Preparation of biureto polyisocyanates Preparation of biureto polyisocyanates

1990-04-23

1991-01-08

Siegel, Alan

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

Organic compounds

Isocyanate esters

C07C27300

Patent

active

049837621

ABSTRACT:
Clear, precipitate-free, storage-stable biureto polyisocyanates, well adopted for paint applications, are prepared by reacting at least one aliphatic, alicyclic or arylaliphatic monomeric diisocyanate with water, at a temperature of at least 70.degree. C. and under an absolute pressure of at least 1.2 bar, including a partial pressure of carbon dioxide of at least 0.2 bar.

REFERENCES:
patent: 4218390 (1980-08-01), Brusilovsky et al.

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