Catalytic hydrolysis process for polyamines

Details Catalytic hydrolysis process for polyamines Catalytic hydrolysis process for polyamines

1989-08-02

1990-06-05

Daus, Donald G.

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

Organic compounds

Amino nitrogen containing

564 61, 564414, 564468, 564489, 564511, 528 53, 528 57, C07C 8500

Patent

active

049315951

ABSTRACT:
Polyamines containing primary amino groups are prepared in a single stage process by hydrolyzing an isocyanate in the presence of a catalyst incorporable through an NCO reactive group and a water-miscible aprotic-dipolar solvent. This hydrolysis is carried out at from 20.degree. to 210.degree. C. with the reactants being in substantially homogeneous phase. The isocyanate starting material has an NCO content of from 0.5 to 40% by weight. The catalyst is used in a quantity of at least 0.0001% by weight, based on 100% by weight of isocyanate compound. The water-miscible solvent is used in a quantity of at least 10% by weight, based on 100% by weight of isocyanate compound. The polyamines thus produced are particularly useful in the production of polyurethanes.

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