Process for the preparation of aliphatic di- and polyurethanes

Details Process for the preparation of aliphatic di- and polyurethanes Process for the preparation of aliphatic di- and polyurethanes

1986-06-26

1987-12-15

Shippen, Michael L.

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

Organic compounds

Carboxylic acid esters

560 25, 560158, C07C125073

Patent

active

047134763

ABSTRACT:
A process for the preparation of aliphatic, cycloaliphatic, arylaliphatic and aliphatic-cycloaliphatic di- and polyurethanes wherein primary aliphatic, cycloaliphatic, arylaliphatic or aliphatic-cycloaliphatic di- or polyamines are reacted with urea and a primary or secondary aliphatic alcohol at temperatures of above 190.degree. C. to 300.degree. C., following which ammonia and other by-products are separated from the aliphatic, cycloaliphatic, arylaliphatic or aliphatic-cycloaliphatic di- or polyurethane product.

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