Methylated and Trifluoromethylated Aromatic Poly(ether sulfone)s
โ Scribed by Baijun Liu; Wei Hu; Xianhua Rao; Guibin Wang; Zhenhua jiang; Zhongwen Wu; Toshihiko Matsumoto
- Publisher
- Springer
- Year
- 2004
- Tongue
- English
- Weight
- 393 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0170-0839
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๐ SIMILAR VOLUMES
Two sulfonyl group-containing bis(ether anhydride)s, 4,4 -[sulfonylbis(1,4-phenylene)dioxy]diphthalic anhydride ( IV ) and 4,4 -[sulfonylbis(2,6-dimethyl-1,4-phenylene)dioxy]diphthalic anhydride (Me-IV ), were prepared in three steps starting from the nucleophilic nitrodisplacement reaction of the b
Poly(ether sulfone) and poly(ether sulfone ketone) copolymers (I-V) were synthesized by the nucleophilic substitution reaction of 4,4ะ-dihydroxy diphenyl sulfone (DHDPS, A) with various mole proportions 4,4ะ-difluoro benzophenone (DFBP, B) and 4,4ะ-difluoro diphenyl sulfone (DFDPS, C) using sulfolan