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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/19543

    Title: A new curing agent for self-curable system of aqueous-based PU dispersion
    Authors: Wang, Shih-Chieh;Chen, Po-Cheng;Yeh, Jen-taut;Chen, Kan-nan
    Contributors: 淡江大學化學學系
    Keywords: Azetidine;Self-curing;Ring-opening;Aqueous-based PU
    Date: 2007-04
    Issue Date: 2009-11-04 16:59:12 (UTC+8)
    Publisher: Elsevier
    Abstract: 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.
    Relation: Reactive and Functional Polymers 67(4), pp.299-311
    DOI: 10.1016/j.reactfunctpolym.2007.01.002
    Appears in Collections:[Graduate Institute & Department of Chemical and Materials Engineering] Journal Article

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