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Polymers of carbonic acid 18: polymerizations of cyclobis(hexamethylene carbonate) by means of BuSnCl3 or Sn(II)2-ethylhexanoate

โœ Scribed by Hans R. Kricheldorf; Andreas Mahler


Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
654 KB
Volume
37
Category
Article
ISSN
0032-3861

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๐Ÿ“œ SIMILAR VOLUMES


Polymers of carbonic acid. XVII. Polymer
โœ Hans R. Kricheldorf; Andreas Mahler ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 577 KB

Dimeric cyclotetramethylenecarbonate (TeMC)2 was polymerized in bulk at 185OC. Either nBuSnC1, or Sn(II)2-ethylhexanoate (SnOct2) were used as catalysts. SnOct, proved to be somewhat less reactive, but high yields (up to 93%) and high viscosities (qinh up to 0.85 dL/g) were obtained with both cataly

Polymers of carbonic acid, 21. Ring-open
โœ Hans R. Kricheldorf; Martina Lossin; Andreas Mahler ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 518 KB

Cyclobis(diethy1ene glycol carbonate), (DEGC),, was synthesized by polycondensation of diethylene glycol with diethyl carbonate followed by thermal depolymerization of the crude polycarbonate in vacuo. BuSnCl,-initiated polymerizations of (DEGC)2 in chlorobenzene at 100 "C gave poor results. Therefo