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Novel one-pot syntheses of sulfur-containing polymers from a bifunctional five-membered cyclic dithiocarbonate

✍ Scribed by Wonmun Choi; Fumio Sanda; Takeshi Endo

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 167 KB
Volume: 36
Category: Article
ISSN: 0887-624X
DOI: 10.1002/(sici)1099-0518(199805)36:7<1189::aid-pola16>3.0.co;2-3

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✦ Synopsis

Novel one-pot syntheses of sulfur-containing polymers from a bifunctional five-membered cyclic dithiocarbonate ( 1a) were carried out. Polythiourethanes were obtained by the polyaddition of 4,4-methylenebis(phenyl isocyanate), tolylene 2,6diisocyanate, and hexamethylene diisocyanate with a dithiol (2a) obtained by the reaction of 1a and benzylamine under mild conditions. Polythioesters were also obtained by the polycondensation of terephthaloyl and succinyl chlorides with 2a. Further, polythioether was obtained by the polycondensation of a,a-dibromo-p-xylene with 2a.

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A novel one-pot oxidation polymerization

A novel one-pot oxidation polymerization of dithiols obtained from bifunctional five-membered cyclic dithiocarbonates with amines

✍ Wonmun Choi; Fumio Sanda; Nobuhiro Kihara; Takeshi Endo 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 151 KB 👁 1 views

One-pot oxidation polymerization of dithiols, obtained from bifunctional five-membered cyclic dithiocarbonates ( 4a and 4b) with two equivalents of amines, was studied. The monomers 4a and 4b were synthesized by the reactions of bisphenol A diglycidyl ether and neopentyl glycol diglycidyl ether with