Process for the preparation of N-aryl di- or polyurethanes

Details Process for the preparation of N-aryl di- or polyurethanes Process for the preparation of N-aryl di- or polyurethanes

1984-06-11

1986-09-09

Helfin, Bernard

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

Organic compounds

Carboxylic acid esters

560 21, 560 22, C07C125073, C07C125077

Patent

active

046110798

ABSTRACT:
A method for the production of N-aryl substituted di- and polyurethanes in high yield, by the reaction of an aromatic di- or polyamine with urea and alcohol at high temperatures. The di- and polyurethanes thus produced have utility as isocyanate precursors.

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