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The formation of polyimides from anhydrides and isocyanates
Author(s) -
Carleton Peter S.,
Farrissey William J.,
Rose James S.
Publication year - 1972
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1972.070161122
Subject(s) - isocyanate , imide , reagent , polymer chemistry , hydrolysis , amine gas treating , chemistry , urea , organic chemistry , carboxylic acid , polyurethane
The addition of water to the reaction of isocyanates with carboxylic acid anhydrides has been observed to increase markedly the rate of formation of the corresponding imide. This effect has been observed with both monofunctional and difunctional reagents as well as in different solvents. Evidence is presented which suggests that water hydrolyzes the isocyanate either to the corresponding urea or amine.