Process for the preparation of water-soluble polymers containing polyalkylene glycol ether side chains
    1.
    发明授权
    Process for the preparation of water-soluble polymers containing polyalkylene glycol ether side chains 失效
    制备含聚亚烷基二醇醚侧链的水溶性聚合物的方法

    公开(公告)号:US06756471B1

    公开(公告)日:2004-06-29

    申请号:US10129110

    申请日:2002-05-13

    IPC分类号: C08G6300

    摘要: The invention relates to a process for the preparation of water-soluble polymers containing polyalkylene glycol ether side chains and having molecular weights of from 15,000 to 65,000 by solution polymerization of esters of ethylenically unsaturated carboxylic acids and polyalkylene glycols which are masked on the end groups at one end, if desired together with another monomer in at least one hydrocarbon at monomer concentrations of from 70 to 95% by weight in the presence of free-radical-forming polymerization initiators and, if desired, polymerization regulators at temperatures of up to 200° C., removal of the solvent used in the solution polymerization, and dissolution of the polymers in water to give from 50 to 80% strength by weight solutions, with polymers containing acid groups being neutralized if desired.

    摘要翻译: 本发明涉及一种制备含聚亚烷基二醇醚侧链的水溶性聚合物的方法,其分子量为15,000至65,000,通过在末端基上被掩蔽的烯属不饱和羧酸和聚亚烷基二醇的酯的溶液聚合 一方面,如果需要,在形成自由基的聚合引发剂的存在下,在70至95重量%的单体浓度下,在至少一种烃中与另一种单体一起使用,如果需要,聚合调节剂的温度高达200° C.去除溶液聚合中使用的溶剂,并将聚合物溶解在水中,得到50-80%重量的强度溶液,如果需要,含有酸基团的聚合物被中和。

    Method for modifying acid group containing polymers
    3.
    发明授权
    Method for modifying acid group containing polymers 有权
    改性含酸基聚​​合物的方法

    公开(公告)号:US06846882B2

    公开(公告)日:2005-01-25

    申请号:US10239053

    申请日:2001-03-27

    摘要: Polymers containing acid groups are modified by reaction of (a) polymers which comprise at least 5% by weight of a copolymerized monoethylenically unsaturated monomer containing acid groups, have molar masses of from 200 to 100,000 and are obtainable by free-radical polymerization of monoethylenically unsaturated acids in aqueous solution in the presence or absence of other monoethylenically unsaturated monomers and in the presence of at least 4% by weight, based on the monomers used in the polymerization, of a water-soluble sulfur compound in which the sulfur is in the oxidation state +4, with (b) polyalkylene glycols which are end-capped at one end, alkylpolyalkylene glycol amines or mixtures thereof, or mixtures of at least one of the two compounds specified with up to 30% by weight, based on the mixtures, of ammonia, amines, alcohols, hydroxycarboxylic acids or aminocarboxylic acids at up to 250° C.

    摘要翻译: 含有酸基的聚合物通过(a)包含至少5重量%的含酸基团的共聚单烯属不饱和单体的聚合物的反应进行改性,摩尔质量为200至100,000,可通过单烯键不饱和的自由基聚合获得 在存在或不存在其它单烯键式不饱和单体的情况下,在基于聚合中使用的单体的至少4重量%存在下,在水溶液中的硫在其中氧化的水溶性硫化合物 状态+4,其中(b)在一端被封端的聚亚烷基二醇,烷基聚亚烷基二醇胺或其混合物,或基于混合物,至多30重量%指定的两种化合物中的至少一种的混合物, 的氨,胺,醇,羟基羧酸或至多250℃的氨基羧酸