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Condensation polymerization of multifunctional monomers and properties of related polyester resins. II. Thermal properties of polyester—imide varnishes
Author(s) -
Chiang WenYen,
Chiang WenChang
Publication year - 1988
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.1988.070350603
Subject(s) - polyester , materials science , thermogravimetric analysis , imide , diimide , condensation polymer , polymer chemistry , monomer , benzophenone , polymerization , composite material , organic chemistry , polymer , chemistry , perylene , molecule
Polyester—imide prepolymers containing synthesized N,N ′‐bis(hydroxyethyl)pyromellitic diimide (PMDI) or N,N ′‐bis(hydroxyethyl)‐3,3′‐4,4′‐benzophenone tetracarboxylic diimide (BTDI) were synthesized under conditions previously reported. One‐component varnishes were obtained by mixing the synthesized prepolymers with commercial Desmodur CT‐stable. Thermal behavior of these varnishes was investigated using thermogravimetric analysis. Activation energy of cured film, which was a polyester—imide varnish, was determined by using a multiple heating rate method. Polyester—imides coated copper wires were characterized, and were found to be acceptable, according to the specification of Japanese Industrial Standard (JIS‐C‐3214).