✦ LIBER ✦

Poly(aryl ether)s containing o-terphenyl subunits. II. Random poly(ether sulfone)s

✍ Scribed by Sean M. Mackinnon; Timothy P. Bender; Zhi Yuan Wang

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 219 KB
Volume: 38
Category: Article
ISSN: 0887-624X
DOI: 10.1002/(sici)1099-0518(20000101)38:1<9::aid-pola2>3.0.co;2-8

No coin nor oath required. For personal study only.

✦ Synopsis

The synthesis of a new A 2 X-type difluoride monomer, N-2-pyridyl-4Ј,4Љ-bis-(4-fluorobenzenesulfonyl)-o-terphenyl-3,6-dimethyl-4,5-dicarboxylic imide (3), is described. The monomer 3 was incorporated into a series of copoly(aryl ether sulfone)s by polymerization of 4,4Ј-isopropylidenediphenol and 4,4Ј-difluorophenylsulfone. The incorporation of monomer 3 had an observable effect on both the glass-transition temperature of poly(aryl ether sulfone)s and the tendency for macrocyclic oligomers to form during polymerization. Replacement of the pyridyl imide group via a transimidization reaction with propargyl amine proceeded quantitatively and without polymer degradation. The acetylene containing copoly(aryl ether sulfone) could be crosslinked by simple thermal treatment, resulting in an increase in the glass-transition temperature and solvent resistance.

📜 SIMILAR VOLUMES

Poly(aryl ether)s containing o-terphenyl

Poly(aryl ether)s containing o-terphenyl subunits. III. Random copoly(ether imide)s

✍ Timothy P. Bender; Sean M. MacKinnon; Zhi Yuan Wang 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 156 KB

The synthesis of a new diamine monomer, N-n-butyl 3,12-diamino-5,6,9,10tetrahydro[5]helicene-7,8-dicarboxylic imide (4), that contains a helically locked, Ushaped 4Ј,4Љ-o-terphenyl moiety is described. The monomer was polymerized with 3,3Ј,4,4Ј-oxydiphthalic dianhydride and 2,2-bis[4-(4-aminophenoxy

Sulfonated poly(aryl ether ketone)s

✍ Ulrich, Hans-Heinz ;Rafler, Gerald 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 78 KB 👁 1 views

Several kinds of commercially available polymers of the type poly(oxy-1,4-phenylenecarbonyl-1,4-phenylene) were sulfonated by reaction with mixtures of sulfuric acid and oleum. The ether/carbonyl group ratio of the polymer chain varied from 0.67 to 2.0. With decreasing amounts of ether links in the

Synthesis and properties of poly(aryl et

Synthesis and properties of poly(aryl ether sulfone)s containing the phthalazinone moiety

✍ Y. Z. Meng; A. A. Hay; X. G. Jian; S. C. Tjong 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 154 KB 👁 2 views

Three series of poly(aryl ether sulfone)s (PAESs) containing the phthalazinone moiety in the polymer backbone were synthesized by solution polycondensation of bis(4-chlorophenyl) sulfone with three commercial bisphenols and 4-(4-hydroxyphenyl)-2,3-phthalazin-1-one. Bisphenol-A, hydroquinone, and bis

Synthesis of novel fluorine-containing p

Synthesis of novel fluorine-containing poly(aryl ether ketone)s

✍ Kunio Kimura; Yumi Tabuchi; Yuhiko Yamashita; Patrick E. Cassidy; John W. Fitch 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 175 KB 👁 1 views

Novel poly(aryl ether ketone)s containin

Novel poly(aryl ether ketone)s containing various pendant groups. II. Gas-transport properties

✍ Zhonggang Wang; Tianlu Chen; Jiping Xu 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 163 KB 👁 1 views

The gas transport of hydrogen, oxygen, nitrogen, carbon dioxide, and methane gases in a series of poly(aryl ether ketone)s was examined. These polymer membranes have a wide range of permeability coefficients and permselectivity coefficients, showing excellent gas-transport properties. The enhanced i

Synthesis and characterization of poly(a

Synthesis and characterization of poly(aryl ether)s containing the pyrimidine moiety

✍ Linghua Yu; Allan S. Hay 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 109 KB 👁 1 views

A series of new poly(aryl ether)s containing the pyrimidine moiety were prepared by a nucleophilic aromatic substitution polymerization reaction in an aprotic solvent (DMAc) in the presence of excess potassium carbonate. These polymers are high molecular weight, amorphous, and soluble in common solv