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    • 8. 发明授权
    • Hydrophilic, swellable graft polymers
    • 亲水性,可溶胀的接枝聚合物
    • US5489647A
    • 1996-02-06
    • US977002
    • 1992-11-16
    • Ulrich KussmaulManfred MayerUwe StuvenUlrich RiegelFriedrich Engelhardt
    • Ulrich KussmaulManfred MayerUwe StuvenUlrich RiegelFriedrich Engelhardt
    • A61L15/00A61L15/60C08F251/00C08F283/06
    • C08F251/00A61L15/60
    • The present invention relates to hydrophilic, swellable graft polymers which comprise, in a random distribution, from 0.5 to 50% by weight of radicals of the general formula I ##STR1## and radicals of the general formula II ##STR2## from 49 to 99% by weight of radicals of the general formula III ##STR3## containing an acid group, and from 0.1 to 2% by weight of radicals of a crosslinking agent which are derived from monomers containing at least two olefinically unsaturated double bonds, where the radicals R.sup.1 to R.sup.4, X and Y and n and m are where X and Y, independently of one another are COCH.sub.3, CH.sub.2 COOR.sup.2, COCH.sub.2 CH.sub.2 COOH ##STR4## n and m, independently of one another, are 2 to 300, R.sup.1 is hydrogen or methyl, R.sup.2, independently of one another, are hydrogen, methyl or ethyl, R.sup.3 is the carboxyl group, the sulphonyl group, the phosphonyl group, which is optionally esterified by means of alkanol having 1 to 4 carbon atoms, or a group of the formula ##STR5## to the preparation thereof, and to the use thereof as absorbents for water and aqueous solutions.
    • 本发明涉及亲水性,可溶胀的接枝聚合物,其以无规分布包含0.5至50重量%的通式I(I)的基团和通式II的基团(II) )49至99重量%的含有酸基团的通式III(III)的基团和0.1至2重量%的衍生自含有至少两个烯属的单体的交联剂的基团 不饱和双键,其中基团R 1至R 4,X和Y以及n和m是其中X和Y彼此独立地是COCH 3,CH 2 COOR 2,COCH 2 CH 2 COOH,另一个是2至300,R 1是氢或甲基,R 2, 独立地是氢,甲基或乙基,R3是羧基,磺酰基,膦酰基,其任选地通过具有1至4个碳原子的链烷醇酯化,或下式的组: 作为水和水溶液的吸收剂。