Urea diisocyanate compositions

Details Urea diisocyanate compositions Urea diisocyanate compositions

1973-09-06

1976-03-09

Gotts, Lewis

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 25AT, 260 775AT, 260453AL, 260453AR, 260453P, C07C119042, C07C119045, C07C119048

Patent

active

039431584

ABSTRACT:
The present invention relates to stable solutions of urea diisocyanates in diisocyanates which are free from urea groups which solutions are prepared by a process which comprises reacting in the absence of a solvent at a temperature from about -20.degree.C to about 80.degree.C an organic diisocyanate with a bis-secondary diamine such that the NCO/NH-ratio is from 2.5 : 1 to 20 : 1. The solutions of the invention are well-suited for use as isocyanate component for the preparation of polyurethane resins by the isocyanate polyaddition process.

REFERENCES:
patent: 3124605 (1964-03-01), Wagner
patent: 3284479 (1966-11-01), Windemuth et al.
patent: 3441588 (1969-04-01), Wagner et al.

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