Aromatic polyamides and polyesters containing ortho-ether groups
申请人:University of Liverpool
公开号:US05834620A1
公开(公告)日:1998-11-10
Described herein are polyesters and polyamides which contain repeat units derived from novel dicarboxylic acids comprising arylene groups having ortho ethers substituted thereon. Also disclosed are novel compounds from which these polymers can be made. The polymers are especially useful for molding resins and coatings.
Synthesis of bis(ether nitrile)s and bis(ether acid)s from simple aromatic diols bymeta-fluoro displacement from 3-fluorobenzonitrile
作者:Geoffrey C. Eastmond、Jerzy Paprotny
DOI:10.1039/a701127j
日期:——
There is interest in synthesizing bis(ether acid)s and related
compounds to use as monomers in order to prepare processable aromatic
polymers, such as poly(ether amide)s and poly(ether ester)s. We have now
found that it is possible to prepare efficiently
bis(3-cyanophenoxy)phenylenes by fluoro displacement from
3-fluorobenzonitrile and phenylene diols or their derivatives, such as
substituted catechols, and to convert those bis(ether nitrile)s to
bis(3-carboxyphenoxy)phenylenes which can be used in the synthesis of
poly(ether amide)s and poly(ether ester)s. Themeta-fluoro
displacement is performed at elevated temperatures in
N-methylpyrrolidinone.