Salt effect on polyaddition of bifunctional cyclic carbonate and diamine

Autor:	Shoko Inoue, Takeshi Endo, Bungo Ochiai
Rok vydání:	2005
Předmět:	Polymers and Plastics Organic Chemistry Lithium fluoride chemistry.chemical_element chemistry.chemical_compound Monomer chemistry Diamine Polymer chemistry Materials Chemistry Lithium chloride Carbonate Addition polymer Organic chemistry Lithium Bifunctional
Zdroj:	Journal of Polymer Science Part A: Polymer Chemistry. 43:6282-6286
ISSN:	1099-0518 0887-624X
DOI:	10.1002/pola.21081
Popis:	The effect of various additives was examined for polyaddition of bifunctional cyclic carbonate and diamine giving poly(hydroxyurethane). Lithium chloride and lithium fluoride especially proved to be effective for the acceleration that resulted in giving polymers with higher molecular weights without coloration. The IR spectroscopic analysis of the mixtures of the additives and the carbonate monomer suggested that the acceleration with the lithium salts depends on the activation of the carbonyl group to enhance its electrophilicity. © 2005 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 43: 6282–6286, 2005
Databáze:	OpenAIRE
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