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New polymer syntheses, 101. Liquid-crystalline hyperbranched and potentially biodegradable polyesters based on phloretic acid and gallic acid

✍ Scribed by Antonio Reina; Andreas Gerken; Uwe Zemann; Hans R. Kricheldorf


Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
153 KB
Volume
200
Category
Article
ISSN
1022-1352

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📜 SIMILAR VOLUMES


New polymer syntheses. XCVII. Hyperbranc
✍ Hans R. Kricheldorf; Thomas Stukenbrock; Christian Friedrich 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 353 KB

Two classes of liquid crystalline hyperbranched copolyesters were prepared by the copolycondensation of silylated 3,5-bis(acetoxy)benzoic acid with mixtures of mesogenic difunctional monomers. The first class of LC-copolyesters was obtained from 1 : 1 mixtures (molar ratio) of silylated b-(4-acetoxy

New polymer syntheses. 102. Aspirin-modi
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Four series of liquid-crystalline copolyesters were prepared by the transesterification of poly(ethylene terephthalate) (PET) with 4-acetoxybenzoic acid (4-ABA) or mixtures of 4-ABA and acetylsalicylic acid (ASA). Two series consisted of 30 mol % PET, and the other two series consisted of 40 mol % P

New polymer syntheses, 79. Hyperbranched
✍ Hans R. Kricheldorf; Gerd Löhden 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 606 KB

## Abstract The reaction of 3‐acetoxybenzoyl chloride (4) with __N,N__′,__O__‐tris(trimethylsilyl)‐3,5‐diaminobenzoic acid (5) proceeds by highly selective and almost quantitative acylation of both amino groups. The resulting 3,5‐bis(3‐acetoxybenzamido)benzoic acid (6a), or its silylated derivative