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    题名: A new tri-functional azetidine compound for self-curing aqueous-based PU system
    作者: Wang, Shih-Chieh;Chen, Po-Chen;Hwang, Jing-Zhong;Huang, Chi-Yuan;Yeh, Jen-Taut;Chen, Kan-Nan
    贡献者: 淡江大學化學學系
    关键词: self-curing;azetidine;ring-opening;aqueous-based PU;Michael addition
    日期: 2012-04
    上传时间: 2013-03-12 23:03:20 (UTC+8)
    出版者: Hoboken: John Wiley & Sons, Inc.
    摘要: A mono-azetidine compound had been demonstrating a ring opening reaction with carboxylic acid (e.g., trimethylacetic acid, TMAA) and that resulted in an amino ester bond formation at ambient temperature. A triazetidine compound (trimethylolpropane tris(1-azetidinyl)propionate, TMPTA-AZT) was obtained via Michael addition of azetidine (AZT) to trimethylolpropane triacrylate (TMPTA). The carboxylic groups of anionic aqueous-based polyurethanes (PU) served as internal emulsifier, which stabilized PU dispersion and also served as PU curing sites. The triazetidine compound (TMPTA-AZT) was introduced into anionic aqueous-based PU dispersion as a new latent curing agent and that mixture became a single-component self-curable aqueous PU system. A crosslinked PU film was obtained from this PU system on drying at ambient temperature. The final polymer performance properties demonstrated the crosslinking behaviors of this new curing agent, TMPTA-AZT, with carboxylic ion-containing aqueous-based PU resins.
    關聯: Journal of Applied Polymer Science 124(1), pp.175–181
    DOI: 10.1002/app.35091
    显示于类别:[化學學系暨研究所] 期刊論文


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