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- W2993612062 abstract "Aqueous polyurethane dispersions (PUDs) have recently emerged as important alternatives to their solvent-based counterparts for various applications due to increasing health and environmental awareness (green chemistry). Anionic polyester-polyurethane dispersions were synthesized by three steps. In the first step, macromonomer diisocyanate having carboxylic acid was prepared by isophorone diisocyanate (IPDI), dimethylol propionic acid (DMPA) in percent of acetone as solvent and dibutyldtin dilaurate (DBTDL) as catalyst. Then, carboxylic polyurethane was prepared by reaction macromonomer diisocyanate having carboxylic acid with linear aliphatic polyester (Mw=2000), trifunctional polyester (Mw=2800) and butanediol (BDO) as chain extender. The next step involved neutralization and dispersion in water, where acidic polyurethane was neutralized by the addition of triethylamine (TEA). Factors influencing the synthesis of polyurethane dispersion mainly involve reaction temperature, reaction time, the concentration of catalyst, DMPA content and BDO content, were studied. The polymers have been characterized with DSC and FTIR." @default.
- W2993612062 created "2019-12-13" @default.
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- W2993612062 date "2011-01-01" @default.
- W2993612062 modified "2023-09-28" @default.
- W2993612062 title "Synthesis and Characterization of Anionic Polyester-Polyurethane Dispersion as Environmentally-Friendly Waterbased Resins" @default.
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- W2993612062 doi "https://doi.org/10.22034/jchr.2012.543976" @default.
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