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Preparation of aromatic copolyesteramides by the direct polycondensation with a vilsmeier adduct derived from tosyl chloride and N,N-dimethylformamide

✍ Scribed by Higashi, Fukuji ;Mihara, Yuko ;Takahashi, Ikuo ;Chen, Wen-Hsin ;Chang, Tech-Chou


Publisher
John Wiley and Sons
Year
1985
Weight
332 KB
Volume
23
Category
Article
ISSN
0360-6376

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Direct synthesis of aromatic polyesters
✍ Higashi, Fukuji ;Ozawa, Michihide ;Chang, Teh-Chon 📂 Article 📅 1985 🏛 John Wiley and Sons ⚖ 381 KB

## Abstract A sulfonium salt derived from tosyl chloride and __N__‐methylimidazole was successfully used as an effective condensing agent for the preparation of high‐molecular‐weight aromatic polyesters by the direct polycondensation of aromatic dicarboxylic acids and bisphenols. Conditions for the