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Various properties of diimide–diacid‐modified saturated polysters
Author(s) -
Lee WenFu,
Chen Ienwhei,
Chang ChiHong
Publication year - 1994
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.1994.070520108
Subject(s) - diimide , thermogravimetric analysis , prepolymer , thermal stability , materials science , polyester , hexamethylene diisocyanate , polymer chemistry , solubility , monomer , activation energy , toluene diisocyanate , polyurethane , polymer , chemical engineering , chemistry , organic chemistry , composite material , molecule , perylene , engineering
Polyesterdiimide prepolymers containing synthesized diimide–diacid monomer (DIDA n ) were synthesized under conditions previously under conditions previously reported. One‐component varnishes were obtained by mixing the synthesized prepolymers with phenol‐blocked toluene diisocyanate (TDI) and/or hexamethylene diisocyanate (HMDI). The solubility parameter of diimidemodified polyester prepolymer was investigated using an intrinsic viscosity measurement. Thermal behavior and pyrolysis activation energy were also investigated using thermogravimetric analysis. The thermal stability increased with an increase in the content of DIDA. The diimide‐modified polyester one‐component varnishes coated onto an aluminum panel were found to be acceptable, according to the specification of ASTM D‐3794. © 1994 John Wiley & Sons, Inc.