Process for the preparation of an aryl mono-, di-, and/or polyur

Details Process for the preparation of an aryl mono-, di-, and/or polyur Process for the preparation of an aryl mono-, di-, and/or polyur

1980-03-31

1983-02-22

Helfin, B.

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

Organic compounds

Carboxylic acid esters

560 24, 560 27, 560 28, 560 29, 560 30, 560 31, 560 32, 560 22, 560 21, C07C12507, C07C125077, C07C125063

Patent

active

043750001

ABSTRACT:
A process for the preparation of an aryl mono-, di-, and/or polyurethane comprising the steps of A. reacting a primary aromatic mono-, di-, and/or polyamine with an O-alkyl carbamate in the presence of an alcohol at temperatures greater than 160.degree. C., and

REFERENCES:
patent: 2409712 (1946-10-01), Schweitzer
patent: 2806051 (1957-09-01), Brockway

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