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    • 4. 发明申请
    • FINELY DIVIDED, STARCH-CONTAINING POLYMER DISPERSIONS, PROCESSES FOR THEIR PREPARATION AND USE AS SIZES IN PAPERMAKING
    • 精细分散,含淀粉的聚合物分散体,其制备方法和用于造纸中的尺寸
    • WO2013053840A3
    • 2013-08-08
    • PCT/EP2012070188
    • 2012-10-11
    • BASF SECIMPEANU CARMEN-ELENAKERN HOLGERARNOLD PETRAHAMERS CHRISTOPH
    • CIMPEANU CARMEN-ELENAKERN HOLGERARNOLD PETRAHAMERS CHRISTOPH
    • C08F212/08C08F2/24C08F220/16D21H17/28D21H17/34D21H21/16
    • D21H21/16C08F2/24C08F2/26C08F212/08C08F220/18C08F251/00D21H17/28D21H17/34D21H19/20C08F2220/1825C08F236/20C08F2/44
    • A finely divided, starch-containing polymer dispersion which is obtainable by free radical emulsion polymerization of ethylenically unsaturated monomers in the presence of at least one redox initiator and starch, wherein (a) from 0 to less than 40% by weight of at least one optionally substituted styrene, (b) from greater than 60 to 100% by weight of at least one C1-C12-alkyl acrylate and/or C1-C12-alkyl methacrylate, (c) from 0 to 10% by weight of at least one other ethylenically unsaturated copolymerizable monomer, are used as the ethylenically unsaturated monomers, the sum (a) + (b) + (c) being 100% and being based on the active monomer content and (d) from 15 to 40% by weight of at least one degraded starch which has a molar mass Mw of from 1000 to 65 000 g/mol, based on the total weight of solids content of components (a) + (b) + (c) + (d), are used as the starch, and the polymerization being carried out in the presence of at least 0.01% by weight, based on the monomers used, of at least one terpene containing chain-transfer agent, and in which the polymer dispersion optionally comprises an aluminium compound. The use of the finely divided, starch-containing polymer dispersions as sizes for paper, board and cardboard is also claimed.
    • 一种细分散的含淀粉的聚合物分散体,其可通过烯属不饱和单体在至少一种氧化还原引发剂和淀粉的存在下的自由基乳液聚合而获得,其中(a)0至小于40重量%的至少一种 任选取代的苯乙烯,(b)大于60至100重量%的至少一种丙烯酸C1-C12烷基酯和/或甲基丙烯酸C1-C12-烷基酯,(c)0至10重量%的至少一种 其他烯键式不饱和可共聚单体用作烯键式不饱和单体,总和(a)+(b)+(c)为100%,基于活性单体含量,(d)15〜40重量% 使用基于组分(a)+(b)+(c)+(d)的固体含量的总重量,摩尔质量Mw为1000至65000g / mol的至少一种降解淀粉用作 淀粉,并且所述聚合在基于所用单体的至少0.01重量%存在下进行 至少一种含萜烯的链转移剂,其中聚合物分散体任选地包含铝化合物。 还要求使用细碎的含淀粉聚合物分散体作为纸,纸板和纸板的尺寸。