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    • 3. 发明申请
    • POLYSACCHARIDE AND/OR POLYPEPTIDE BASED GRAFT POLYMERS AS SYNTHETIC TANNINS
    • 基于多糖和/或多肽的GRAFT聚合物作为合成鞣剂
    • WO2012163823A1
    • 2012-12-06
    • PCT/EP2012/059825
    • 2012-05-25
    • LANXESS Deutschland GmbHSONG, Ma
    • SONG, Ma
    • C08F251/00C08F289/00C14C3/22
    • C14C3/22C08F251/00C08F251/02C08F289/00C08F291/12C14C3/08C08F220/06
    • A graft polymer of polysaccharides or polypeptides or its respective derivatives, obtainable by free radical polymerization of A) a monomer selected from or a monomer mixture of (a) from 20 to 100% by weight of acrylic acid or methacrylic acid or of a mixture thereof or of the alkali metal, alkaline earth metal or ammonium salts thereof, (b) from 0 to 80% by weight of other monoethylenically unsaturated monomers which are copolymerizable with the monomers (a) and (c) from 0 to 5% by weight of monomers having at least 2 ethylenically unsaturated, nonconjugated double bonds in the molecule, in the presence of either B1) polysaccharides, oxidatively, hydrolytically or enzymatically degraded polysaccharides, oxidized hydrolytically degraded or oxidized enzymatically degraded polysaccharides, or such chemically modified degraded products, chemically modified mono-, oligo-or polysaccharides or mixtures of the stated compounds and/or B2) polypeptides, their hydrolysates or enzymaticallydegraded and optionally chemically modified products or mixtures of the stated compounds in a weight ratio A: (B1 or B2) of from 1:99 to 18:82 or in a weight ratio A:(B1+B2) of from 60:40 to 1:99 and B1 : B2 of from 97:3 to 3:97 used as tanning agents.
    • 多糖或多肽或其相应衍生物的接枝聚合物,其可通过A)选自以下的单体或(a)20至100重量%的丙烯酸或甲基丙烯酸或其混合物的单体混合物的自由基聚合获得 或其碱金属,碱土金属或铵盐,(b)0至80重量%的其它单烯属不饱和单体,其可与单体(a)和(c)共聚,为0至5重量% 分子中具有至少2个烯属不饱和的非共轭双键的单体,在B1)多糖的存在下,氧化,水解或酶降解的多糖,氧化的水解降解或氧化的酶降解的多糖,或这种化学修饰的降解产物,经化学修饰 单糖,寡糖或多糖或所述化合物和/或B2)多肽的混合物,其水解产物或酶降解 并且任选地化学改性的产物或所述化合物的混合物以1:99至18:82的重量比A:(B1或B2)或重量比A:(B1 + B2)为60:40至 1:99,B1:B2为97:3〜3:97,用作鞣剂。