The Initial Stage of the Reaction of Melamine with Formaldehyde
作者:
Rudolf Nastke,
Klaus Dietrich,
Gerhard Reinisch,
Gerald Rafler,
Herbert Gajewski,
期刊:
Journal of Macromolecular Science: Part A - Chemistry
(Taylor Available online 1986)
卷期:
Volume 23,
issue 5
页码: 579-596
ISSN:0022-233X
年代: 1986
DOI:10.1080/00222338608058497
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The concentration-time relationships of the individual active species in the oligocondensation stage of the reaction of melamine with formaldehyde have been investigated, mainly by electrochemical methods. Based on the reaction equations, a kinetic model of the overall reaction was established and the rate constants were calculated by numerical methods. The results suggest the hydroxy-methylamines are converted to methylene and dimethylene ether bridged compounds by acid- and base-catalyzed reactions, respectively. At pH 7-10 the formation of methylene bridges by base-catalyzed scission of dimethylene ether bridges may occur.
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