Process for the preparation of polyisocyanates having biuret gro

Details Process for the preparation of polyisocyanates having biuret gro Process for the preparation of polyisocyanates having biuret gro

1977-04-22

1978-11-28

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

521162, 528144, C07C12724

Patent

active

041275993

ABSTRACT:
The present invention relates to a process for the preparation of polyisocyanates having biuret groups by reaction of excess quantities of organic polyisocyanates with compounds which react with isocyanate groups to form biuret groups, characterized in that the organic polyisocyanates are reacted with a mixture of water and at least one aliphatic, cycloaliphatic or araliphatic monoamine or polyamine.

REFERENCES:
patent: 3862973 (1975-01-01), Dietrich et al.
patent: 3903126 (1975-09-01), Woerner et al.
patent: 3903127 (1975-09-01), Wagner et al.

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