阴离子聚氨酯水分散体的制备研究

Study on the preparation of an aqueous dispersion anion of polyurethane

由 4 ,4’-亚甲基 -二苯基二异氰酸酯 (MDI)与聚丙烯二醇 (PPG)、二羟甲基丙酸 (DMPA)和 1,4 -丁二醇 (BDO)反应 ,然后用三乙胺 (TEA)中和制备了一种新型的阴离子聚氨酯分散体 ,得到稳定的含有0 .8% - 1.1%的 -

The polyurethane anionomers were prepared by polyaddition reaction of 4,4'-methylenebis phenylisocyanate (MDI) with polypropyleneglycol (PPG),dimethnololpropionic acid (DMPA),and 1,4-butanediol (BDO),followed by neutralization of pendant -COOH groups by triethylamine(TEA). Stable dispersions are obtained for polyurethane anionomers containing -COOH groups 0.8%-1.1%.