A series of semi-aromatic poly(imide-ester)s were prepared by the direct polycondensation of N -(4-carboxyphenyl) trimellitimide or N-(3-carboxyphenyl) trimellitimide with various pyromellitic diimide diols containing methylene spacer = 2-6, respectively. The effect of the amount of LiCl, pyridine,
✦ LIBER ✦
The infulence of aromatic diols on thermotropic Poly(ester-amide)s synthesized by direct polycondensation
✍ Scribed by Tsai-Fa Hsu; Chi-Wei Chung; Yu-Der Lee
- Publisher
- Springer
- Year
- 1996
- Tongue
- English
- Weight
- 454 KB
- Volume
- 3
- Category
- Article
- ISSN
- 1022-9760
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## Abstract Four diimide‐diacids 3a‐d were synthesized from pyromellitic dianhydride and amino acids of the formula HOOC (CH~2~)~__m__~ NH~2~, with __m__ = 1, 3, 5, 10. These diacids were condensed directly with various aromatic diamines using triphenyl phosphite in __N__‐methyl‐2‐pyrrolidone (