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    題名: A new curing agent for self-curable system of aqueous-based PU dispersion
    作者: Wang, Shih-Chieh;Chen, Po-Cheng;Yeh, Jen-taut;Chen, Kan-nan
    貢獻者: 淡江大學化學學系
    關鍵詞: Azetidine;Self-curing;Ring-opening;Aqueous-based PU
    日期: 2007-04
    上傳時間: 2009-11-04 16:59:12 (UTC+8)
    出版者: Elsevier
    摘要: Anionic aqueous-based polyurethane (PU) dispersion consists of carboxyl group that served as an internal emulsifier stabilizing aqueous PU dispersion and also a reactive site toward curing agent. A model reaction of a mono-azetidine-containing compound and trimethylacetic acid (TMAA) demonstrated that an amino ester bond formation between azetidine and carboxylic acid. A di-azetidine containing compound (HDDA–AZT) was prepared and served as a curing agent, which was synthesized by a Michael addition reaction of azetidine (AZT) to hexanediol diacrylate (HDDA). Anionic aqueous PU dispersion was treated with HDDA–AZT as a latent curing agent and becoming a self-curable aqueous PU system. A cross-linked PU resin was obtained from this self-curing PU system on drying at ambient temperature. The performance properties of these self-cured PU resins proved that cross-linking behaviors with this new curing agent, HDDA–AZT.
    關聯: Reactive and Functional Polymers 67(4), pp.299-311
    DOI: 10.1016/j.reactfunctpolym.2007.01.002
    顯示於類別:[化學工程與材料工程學系暨研究所] 期刊論文

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