Polyamines and a process for the production thereof

Details Polyamines and a process for the production thereof Polyamines and a process for the production thereof

1989-02-10

1990-11-13

Hollrah, Glennon H.

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

Organic compounds

Amino nitrogen containing

C07C20962

Patent

active

049703420

ABSTRACT:
Polyamines containing from 0.19 to 20.3 wt. % aromatically bound primary amino groups are produced by hydrolyzing an isocyanate group containing compound in the presence of excess water, a tertiary amine and, optionally an ether solvent. The hydrolysis is carried out at a temperature of from -10.degree. to 150.degree. C. in a manner such that the reaction mixture remains substantially homogeneous. The isocyanate starting material contains aromatically bound isocyanate groups and has an NCO-content of from 0.5 to 40 wt. %. The ether solvent must be water soluble and inert with respect to isocyanates. Co-solvents and catalysts may also be included in the reaction mixture. The product polyamines are particularly useful in the production of polyurethanes.

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