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GEL PERMEATING CHROMATOGRAPHY STUDY OF COPOLYCYCLOTRIMERIZATION OF ALIPHATIC MONOISOCYANATES AND DIISOCYANATESстатья
Информация о цитировании статьи получена из
Web of Science
Дата последнего поиска статьи во внешних источниках: 27 мая 2015 г.
- Авторы: BADAMSHINA ER, GRIGOREVA VA, KOMRATOVA VV, KUZAEV AI, BATURIN SM
- Журнал: VYSOKOMOLEKULYARNYE SOEDINENIYA SERIYA A & SERIYA B
- Том: 35
- Номер: 2
- Год издания: 1993
- Первая страница: A157
- Последняя страница: A161
- Аннотация: The process of bulk copolycyclotrimerization of 1,6-hexamethylenediisocyanate with 1-chlorohexamethylene-6-isocyanate catalyzed by hexa-n-butyldistannum oxide at 353 K was studied by microcalorimetry and GPC. It was established that the reaction obeys the first order kinetic law, and that monomers and trimers are present in the reaction system to the completion of the reaction. Isocyanate groups of comonomers have equal reactivity. The composition of oligoisocyanurates was determined as a function of initial concentration of monoisocyanate. MWD of mixed-composition oligoisocyanurates was found. It was shown experimentally that there exists an initial ratio of isocyanate concentration in the reaction system at which gelation does not occur.
- Добавил в систему: Бадамшина Эльмира Рашатовна