Preparation of carboxyl-containing polymers
    94.
    发明授权
    Preparation of carboxyl-containing polymers 失效
    含羧基聚合物的制备

    公开(公告)号:US4621127A

    公开(公告)日:1986-11-04

    申请号:US777328

    申请日:1985-09-18

    CPC分类号: C08F20/04 C08F2/10

    摘要: Carboxyl-containing polymers which are water-soluble at least in the neutralized form are prepared by a method in which a monoethylenically unsaturated C.sub.3 -C.sub.5 -carboxylic acid is polymerized in the presence or absence of a carboxyl-free copolymerizable ethylenically unsaturated monomer in aqueous solution in the presence of polymerization initiator and of from 0.01 to 5% by weight, based on the monomers, of an inorganic acid of phosphorus in which the phosphorus has an oxidation state of from 1 to 4, its water-soluble salts, a water-soluble --PO(OH).sub.2 -containing compound and/or its water-soluble salts and, if required, a polymerization regulator. Virtually colorless or only slightly colored polymer solutions are obtained.

    摘要翻译: 至少以中和形式具有水溶性的含羧基聚合物是通过在存在或不存在无羧基的可共聚烯键式不饱和单体的水溶液中聚合单烯属不饱和C3-C5-羧酸的方法制备的 在聚合引发剂存在下,基于单体为0.01〜5重量%的磷的氧化态为1〜4的磷的无机酸,其水溶性盐,水溶性盐, 可溶性的含PO(OH)2的化合物和/或其水溶性盐,如果需要,可以使用聚合调节剂。 获得几乎无色或仅有微量的聚合物溶液。

    Process for coating electrically conductive objects with polyurethane
    100.
    发明授权
    Process for coating electrically conductive objects with polyurethane 失效
    用聚氨酯涂覆导电物体的方法

    公开(公告)号:US4357221A

    公开(公告)日:1982-11-02

    申请号:US231719

    申请日:1981-02-05

    摘要: A process for coating electrically conductive objects comprisingA. immersing said object as the anode of an electric current in an aqueous polyurethane dispersion prepared by(1) forming a polyurethane solution by reacting an organic polyisocyanate in the presence of an organic solvent with(a) an acrylic ester diol having a molecular weight of between 146 and 3,000;(b) an organic polyhydroxyl compound other than (a) having a molecular weight between 400 and 5,000 selected from the group consisting of polyester, polyols, polyether polyols, polycarbonates, polylactones, and mixtures thereof; and(c) a chain extender selected from the group consisting of diols, triols, diamines, aminoalcohols, having a molecular weight between 62 and 400, water, and mixtures thereof;(2) forming an anionic polyurethane addition product by reacting said polyurethane solution with a mercaptocarboxylic acid salt in the presence of a solvent;(3) adding water; and(4) removing the organic solvent, andB. passing an electric current between the anode and a cathode which is also dispersed in said dispersion, andC. irradiating said object with ultraviolet radiation or electron rays.The process can be used for coating metals such as iron, steel and aluminum.

    摘要翻译: 一种用于涂覆导电物体的方法,包括将所述物体作为电流的阳极浸入到通过(1)在有机溶剂存在下使有机多异氰酸酯与(a)的有机溶剂反应形成聚氨酯溶液而制备的水性聚氨酯分散体, 分子量为146〜3000的丙烯酸酯二醇; (b)除了(a)分子量在400-5000之外的选自聚酯,多元醇,聚醚多元醇,聚碳酸酯,聚内酯及其混合物的有机多羟基化合物; 和(c)选自二醇,三醇,二胺,氨基醇,分子量在62和400之间的增链剂,水及其混合物; (2)通过在溶剂存在下使所述聚氨酯溶液与巯基羧酸盐反应形成阴离子聚氨酯加成产物; (3)加水; 和(4)去除有机溶剂,以及B.在阳极和也分散在所述分散体中的阴极之间通过电流,以及用紫外线或电子射线照射所述物体。 该方法可用于涂覆金属如铁,钢和铝。