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Syntheses of regular copolyamides using triphenyl phosphite and pyridine
Author(s) -
Yang ChinPing,
Yang HueiWen,
Chen RueiShin
Publication year - 2000
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/(sici)1097-4628(20000705)77:1<116::aid-app16>3.0.co;2-m
Subject(s) - oligomer , triphenyl phosphite , polymer chemistry , diamine , pyridine , amine gas treating , condensation polymer , polymerization , chemistry , copolymer , monomer , carboxylic acid , organic chemistry , polymer
In this article, a method of preparing of regular copolyamide (co‐PA) in a reactor using triphenyl phosphite/pyridine as the activating agent was investigated. In two‐step reactions of copolymers prepared from two kinds of dicarboxylic acids and one kind of diamine, oligomer PAs containing amine end groups were first synthesized; then, the second dicarboxylic acid was added to the same reactor to polymerize high molecular weight and regular co‐PAs. However, when oligomers having carboxylic acid end groups were first prepared and another kind of diamine was added, the degree of polymerization was low. The reason proposed was that if the oligomer has an amine end group, it would coexist with the activating agent without deactivating; if the end group was the carboxylic acid end group, deactivation would occur. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 77: 116–122, 2000