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zeige Details Yamazaki, Noboru., Iguchi, Tadao., ... The reaction of diphenyl carbonate with amines and its application to polymer synthesis
in: Journal of Polymer Science: Polymer Chemistry Edition, in: Journal of Polymer Science: Polymer Chemistry Edition . - New York : John Wiley & Sons, Inc., ISSN 0360-6376 Vol. 17 (3. 1979), p. 835-841
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1979
Selective formation of biscarbamates from diphenyl carbonate (DPC) and diamines and the preparation of polyurethanes from the carbamates and diols under mild conditions were studied. The reaction of DPC and diamines was significantly affected by catalysts, biscarbamates being exclusively prepared in high yields in the presence of 2-hydroxypyridine. The polycondensation reaction of the biscarbamates with diols was facilitated by catalysts such as metal salts; among the catalysts examined magnesium chloride in pyridine gave the best results. Metal chlorides in pyridine also promoted the reaction of DPC with aromatic amines to give the corresponding ureas, and the direct synthesis of polyureas was achieved by the polycondensation of DPC with diamines in the presence of the chloride.
Copyright: Copyright © 1979 John Wiley & Sons, Inc.
beteiligte Personen: Yamazaki, Noboru. , Iguchi, Tadao. , Higashi, Fukuji.
Format: Elektronisch
Sprache: English
Erschienen: 1979.
Serie: Wiley InterScience Backfile Collection 1832-2000 [Dig. Serial]
Schlagwörter:
URL: http://dx.doi.org/10.1002/pol.1979.170170322

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