Process for the preparation of polyisocyanates containing biuret

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

1977-11-14

1979-05-01

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

521160, 528 59, 560 24, 560 32, 560115, 560159, C07C12724

Patent

active

041523504

ABSTRACT:
This invention relates to an improved process for the preparation of polyisocyanate mixtures containing biuret groups by the reaction of organic diisocyanates with compounds which react with isocyanate groups to form biuret groups, to the polyisocyanate mixtures obtained by this process and to the use thereof for the preparation of polyurethane resins by the isocyanate polyaddition process.

REFERENCES:
patent: 3358010 (1967-12-01), Britain
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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