Manufacturing method for blocked aqueous dispersion of polyurethanes
    11.
    发明授权
    Manufacturing method for blocked aqueous dispersion of polyurethanes 失效
    封闭聚氨酯水分散体的制备方法

    公开(公告)号:US5863983A

    公开(公告)日:1999-01-26

    申请号:US917273

    申请日:1997-08-25

    Abstract: A blocked hydrophilic polyurethane with molecular weight of 500.about.40,000, 5.about.70% solid content and 5.about.200 milliequivalent per 100 g polymer of sulfonic acid salt, can be prepared from following reactants:a. Organic isocyanates;b. Polyols, including polyether polyol, polyester polyol, polycarbonate, and polycaprolactone, that can participate in the polyaddition reactions with isocyanates.c. Polyols containing sulfonate group.d. Organic blocking agents capable of reacting with isocyanates.The blocked hydrophilic PU resins formed from above reactants can be applied for the anti-wrinkle treatment of cellulosic textiles with excellent performance.

    Abstract translation: 分子量为500的聚合物的封闭亲水性聚氨酯可以由以下反应物制备:差示聚合物40,000,5差异70%固含量和5差异200毫当量/ 100g磺酸盐聚合物。 有机异氰酸酯; b。 多元醇,包括聚醚多元醇,聚酯多元醇,聚碳酸酯和聚己内酯,其可以参与与异氰酸酯的加聚反应。 C。 含有磺酸盐基团的多元醇。 d。 能够与异氰酸酯反应的有机封端剂。 由上述反应物形成的封闭的亲水PU树脂可以用于具有优异性能的纤维素纺织品的抗皱处理。

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