Poly(arylene ether)s ( 3) containing pendant benzoyl groups were prepared by the aromatic substitution reaction of 2,5-difluoro-4-benzoylbenzophenone ( 2) with hydroquinone (1a) and methylhydroquinone (1b) in the presence of potassium carbonate in N,N-dimethylacetamide. The polycondensation proceede
โฆ LIBER โฆ
Synthesis, properties, and gas permeation performance of cardo poly(arylene ether sulfone)s containing phthalimide side groups
โ Scribed by Guang Chen; Xiaosa Zhang; Suobo Zhang; Tianlu Chen; Yonglie Wu
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 175 KB
- Volume
- 106
- Category
- Article
- ISSN
- 0021-8995
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A series of organosoluble aromatic poly(ether imide)s (PEIs) VIIa-k were synthesized from 4,4ะ-[(octahydro-4,7-methano-5H-inden-5-ylidene)bis(1,4-phenylene)dioxy] diphthalic dianhydride (IV) and various aromatic diamines. PEIs synthesized through two-stage polymerization had inherent viscosities of