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    • 9. 发明授权
    • Method for modifying acid group containing polymers
    • 改性含酸基聚​​合物的方法
    • US06846882B2
    • 2005-01-25
    • US10239053
    • 2001-03-27
    • Matthias KronerJohannes PernerKarl-Heinz BüchnerJochen WildJürgen Pfister
    • Matthias KronerJohannes PernerKarl-Heinz BüchnerJochen WildJürgen Pfister
    • C08G81/02C04B24/26C08F8/14C08F8/30
    • C04B24/2658C04B2103/408C08G81/025
    • 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.
    • 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