Process for the production of polyisocyanates which contain carb

Details Process for the production of polyisocyanates which contain carb Process for the production of polyisocyanates which contain carb

1976-11-12

1982-08-17

Barr, J. L.

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

528 51, 528 67, 521107, 521901, C09K 300

Patent

active

043448550

ABSTRACT:
The instant invention relates to a process for producing stable equilibrium mixtures of carbodiimides, uretone imines and organic isocyanates and storage-stable solutions of carbodiimides and uretone imines in polyisocyanates which are free from carbodiimide groups. Either the carbodiimide, or the uretone imine, or both, may contain isocyanate groups. The invention relates to the process for the preparation of these products by so-called heterogeneous catalysis and the use of these products for the production of polyurethane resins.

REFERENCES:
patent: 3676402 (1972-07-01), Matsui et al.
patent: 3887476 (1975-06-01), McConnell
patent: 3952084 (1976-04-01), Edelman et al.
patent: 3953406 (1976-04-01), Marsh
patent: 4046744 (1977-09-01), Jenkins

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