Mechanism of a Chain-Extending Reaction in the Synthesis of Segmented Poly (urethane-urea) Using Blocked Ethylenediamine.

Y Nakano, E Yamazaki, H Hanahata…

文献索引：Nakano, Yasuhiro; Yamazaki, Emiko; Hanahata, Hiroyuki; Okajima, Kunihiko; Kitahama, Yoshiharu Bulletin of the Chemical Society of Japan, 1997 , vol. 70, # 5 p. 1185 - 1192

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被引用次数: 9

摘要

An attempt was made to clarify the mechanism of a chain-extending reaction of NCO- terminated prepolymers in the synthesis of segmented poly (urethane–urea) using blocked ethylenediamine (EDA) with acetone (ACE). For this purpose, an ACE/EDA mixture was allowed to react with phenyl isocyanate (PhNCO) as a model of the prepolymer. The reaction of PhNCO with the ACE/EDA mixture, which was proved to contain ketimine and ...