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Cyclic Polycarbonates by Polycondensation of Bisphenol A with Triphosgene †

✍ Scribed by Kricheldorf, Hans R.; Böhme, Sigrid; Schwarz, Gert; Schultz, Claus-L.

Book ID
127234280
Publisher
American Chemical Society
Year
2004
Tongue
English
Weight
156 KB
Volume
37
Category
Article
ISSN
0024-9297

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## Abstract **Summary:** Bisphenol‐A was polycondensed with diphosgene and excess pyridine in a mixture of dry dichloromethane and 1,4‐dioxane. The stoichiometry was varied to optimize the molecular weight. According to MALDI‐TOF mass spectra the fraction of cyclic polycarbonates increased with hig

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Analog calorimetry is used as a tool to study the interaction of polystyrene, PS, with bisphenol-A polycarbonate, PC, and with tetramethyl bisphenol-A polycarbonate, TMPC. Electrostatic charge calculations were used as a guide to divide polymer repeat units and analogs into groups. A mean-field bina