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    • 1. 发明申请
    • FINE-PARTICLED POLYMER DISPERSIONS CONTAINING STARCH
    • 包含淀粉的精细聚合物分散体
    • US20100236736A1
    • 2010-09-23
    • US11994213
    • 2006-06-23
    • Andreas BrockmeyerHildegard SteinRoland Ettl
    • Andreas BrockmeyerHildegard SteinRoland Ettl
    • D21H17/28C08L3/02
    • D21H17/37C08F2/26C08F2/38C08F2/44D21H17/28D21H21/16
    • Finely divided, starch-containing polymer dispersions which are obtainable by free radical emulsion copolymerization of (a) from 25 to 50% by weight of at least one optionally substituted styrene, methyl methacrylate, acrylonitrile and/or methacrylonitrile, (b) from 1 to 49% by weight of at least one C1-C4-alkyl acrylate and/or one C2-C4-alkyl methacrylate, (c) from 1 to 49% by weight of at least one C5-C22-alkyl acrylate and/or one C5-C22-alkyl methacrylate and (d) from 0 to 10% by weight of at least one other ethylenically unsaturated copolymerizable monomer and (e) from 15 to 40% by weight of a degradable starch which has a molar mass Mw of from 1000 to 65 000 the sum (a)+(b)+(c)+(d)+(e) being 100% and being based on the total solids content, in the presence of redox initiators and at least 0.01% by weight, based on the monomers used, of at least one polymerization regulator, processes for the preparation of the finely divided, starch-containing polymer dispersions by emulsion polymerization of the monomers (a), (b), (c) and (d) with redox initiators in the presence of (e) degraded starch and at least 0.01% by weight, based on the monomers used, of at least one polymerization regulator, and use of the finely divided, starch-containing polymer dispersions as sizes for paper, board and cardboard.
    • 通过(a)25至50重量%的至少一种任选取代的苯乙烯,甲基丙烯酸甲酯,丙烯腈和/或甲基丙烯腈的自由基乳液共聚获得的细分散的含淀粉聚合物分散体,(b)从1至 49重量%的至少一种丙烯酸C 1 -C 4烷基酯和/或一种甲基丙烯酸C 2 -C 4烷基酯,(c)1至49重量%的至少一种C 5 -C 22烷基丙烯酸烷基酯和/或一个C5 -C 22 - 甲基丙烯酸烷基酯和(d)0至10重量%的至少一种其它烯属不饱和可共聚单体,和(e)15至40重量%的可降解淀粉,其摩尔质量分数为1000至 65 000个和(a)+(b)+(c)+(d)+(e)为100%,基于总固体含量,在氧化还原引发剂存在下和至少0.01重量% 对所使用的单体的至少一种聚合调节剂,通过乳液聚合物制备细碎的含淀粉的聚合物分散体的方法 在(e)降解的淀粉存在下,使用氧化还原引发剂将单体(a),(b),(c)和(d))消化,至少基于所用单体的0.01重量% 调节和使用细碎的含淀粉聚合物分散体作为纸张,纸板和纸板的尺寸。
    • 2. 发明申请
    • Fine-Particled Polymer Dispersions Containing Starch
    • 包含淀粉的细颗粒聚合物分散体
    • US20090139675A1
    • 2009-06-04
    • US11993919
    • 2006-06-23
    • Hildegard SteinRoland Ettl
    • Hildegard SteinRoland Ettl
    • D21H21/16C08L67/00D21H17/46
    • D21H17/35C08F2/26C08F2/44D21H17/29D21H17/37
    • Finely divided, starch-containing polymer dispersions obtainable by emulsion copolymerization, with redox initiators, of ethylenically unsaturated monomers from the group consisting of (a) from 45 to 55% by weight of at least one optionally substituted styrene, methyl methacrylate, acrylonitrile and/or methacrylonitrile, (b) from 15 to 29% by weight of at least one C1-C12-alkyl acrylate and/or one C2-C12-alkyl methacrylate and (c) from 0 to 10% by weight of at least one other ethylenically unsaturated copolymerizable monomer in an aqueous medium in the presence of (d) from 15 to 35% by weight of a degraded cationized starch which has a molar mass Mw of from 1000 to 65 000, the sum (a)+(b)+(c)+(d) being 100% and being based on the total solids content, processes for the preparation of such polymer dispersions by emulsion polymerization of the monomers (a), (b) and (c) in an aqueous medium with redox initiators in the presence of (d) cationic starch, and use of the starch-containing polymer dispersions as size for paper, board and cardboard.
    • 通过与氧化还原引发剂通过乳液共聚获得的烯键式不饱和单体可分散的含淀粉的聚合物分散体由(a)45至55重量%的至少一种任选取代的苯乙烯,甲基丙烯酸甲酯,丙烯腈和/ 或甲基丙烯腈,(b)15至29重量%的至少一种丙烯酸C 1 -C 12烷基酯和/或一种C 2 -C 12烷基甲基丙烯酸酯,和(c)0至10重量%的至少一种其它烯属 在(d)15至35重量%的摩尔质量分数为1000至65000的降解的阳离子化淀粉的存在下,(a)+(b)+( c)+(d)为100%,基于总固体含量,通过单体(a),(b)和(c)在具有氧化还原引发剂的水性介质中的乳液聚合制备这种聚合物分散体的方法 在(d)阳离子淀粉的存在下,并使用含淀粉的聚合物 聚合物分散体作为纸张,纸板和纸板的尺寸。