Hydrolysis of isocyanate distillation bottoms

Details Hydrolysis of isocyanate distillation bottoms Hydrolysis of isocyanate distillation bottoms

1985-03-11

1987-03-31

Warren, Charles F.

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

Organic compounds

Amino nitrogen containing

564330, 564334, 564448, 564511, C07C 8750, C07C 8511, C07C 8714

Patent

active

046544437

ABSTRACT:
Liquid distillation residue formed in the phosgenation of polyamines to form polyisocyanates are hydrolyzed to reform the polyamine. The process comprises forming an adduct of the distillation residue with additional polyamine and then hydrolyzing the resulting adduct to convert the adduct to said polyamine.

REFERENCES:
patent: 3225094 (1965-12-01), Wolf
patent: 3499035 (1970-03-01), Kober et al.

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