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    • 2. 发明公开
    • FINELY DIVIDED, CATIONIC, AQUEOUS POLYMER DISPERSIONS, METHOD FOR THE PRODUCTION THEREOF, AND THE USE THEREOF
    • 精细分散的阳离子水性聚合物分散体,其制备方法及其用途
    • EP3233931A1
    • 2017-10-25
    • EP15869442.2
    • 2015-12-16
    • BASF SE
    • CIMPEANU, Carmen-ElenaMOELLER, KlausARNOLD, PetraGEORGIEVA, KristinaSCHMIDT-THUEMMES, Juergen
    • C08F2/24C08F2/38C08F2/28C08F220/06C08F220/10C08F212/08D21H21/16
    • C08F2/28C08F2/24C08F212/08C08F220/18C08L25/14C08L33/08C08L33/16C08L2201/50D21H17/37D21H19/20D21H19/58D21H21/16C08F2220/1825C08F2220/286C08F220/34C08F220/06C08F226/06
    • Finely divided, cationic, aqueous polymer dispersions, method for the production thereof, and the use thereof The present invention relates to a finely divided, cationic, aqueous polymer dispersion which is obtainable by emulsion polymerisation of ethylenically unsaturated monomers in a continuous phase containing an aqueous liquid in which the emulsion polymerisation is carried out, in the presence of polymerisation initiators, of a combination of monomers comprising (a) from 0 to less than 60% by weight of at least one optionally substituted styrene, (b) from greater than 0 to 80% of at least one C1-C12-alkyl acrylate and/or at least one C1-C12-alkyl methacrylate, (c) from 0 to 10% by weight of at least one ethylenically unsaturated monomer comprising at least one acid group, (d) from 5 to 20% by weight of at least one ethylenically unsaturated monomer comprising a cationic group, and (e) from 0 to 50% by weight of at least one non-ionic ethylenically unsaturated monomer differing from (a), (b), (c), and (d), the sum of (a)+(b)+(c)+(d)+(e) being 100% by weight, and the aqueous liquid contains from 0 to 4% by weight based on the weight of the combination of monomers of at least one emulsifier, in which the emulsion polymerisation is carried out optionally in the presence of at least one terpene containing compound. Also claimed is a process or preparing the finely divided, cationic, aqueous polymer dispersion and the use of the finely divided, cationic, aqueous polymer dispersion for sizing paper, board and cardboard.
    • 精细分散的阳离子聚合物水分散体,其制备方法及其用途本发明涉及细分散的阳离子聚合物水分散体,其可通过烯属不饱和单体在连续相中的乳液聚合获得,所述连续相含有水 液体,其中在聚合引发剂存在下进行乳液聚合,所述单体组合包含(a)0至小于60重量%的至少一种任选取代的苯乙烯,(b)大于0 至少80%的至少一种丙烯酸C 1 -C 12烷基酯和/或至少一种甲基丙烯酸C 1 -C 12烷基酯,(c)0-10重量%的至少一种烯键式不饱和单体,其至少包含 (d)5至20重量%的至少一种包含阳离子基团的烯键式不饱和单体,和(e)0至50重量%的至少一种非离子烯键式不饱和单体diff (a),(b),(c)和(d)中,(a)+(b)+(c)+(d)+(e)的总和为100重量% 液体含有基于单体组合的重量0至4重量%的至少一种乳化剂,其中乳液聚合任选地在至少一种含萜化合物的存在下进行。 还要求保护一种方法或制备精细分散的阳离子聚合物水分散体和精细分散的阳离子聚合物水分散体用于纸张,纸板和纸板上浆的用途。
    • 3. 发明公开
    • FINELY DIVIDED, CATIONIC, AQUEOUS POLYMER DISPERSIONS, METHOD FOR THE PRODUCTION THEREOF, AND THE USE THEREOF
    • EP3383929A1
    • 2018-10-10
    • EP16805099.5
    • 2016-12-01
    • BASF SE
    • CIMPEANU, Carmen-ElenaMOELLER, KlausARNOLD, PetraGEORGIEVA, KristinaDIEING, ReinholdJEHN-RENDU, ChristianWEN, Quan
    • C08F212/08C08F2/28C08F2/30C08F26/06C08F220/14C08F220/34C08F220/44D21H17/45D21H21/16
    • Finely divided, cationic, aqueous polymer dispersion which is obtainable by emulsion polymerisation of ethylenically unsaturated monomers in an aqueous liquid containing a cationic prepolymer as a dispersant, wherein the cationic prepolymer is prepared in the presence of at least one polymerisation initiator by polymerisation of (a) from 15 to 45% by weight of at least one ethylenically unsaturated monomer comprising at least one quaternary ammonium group; (b) from 5 to 80% by weight of at least one optionally substituted styrene; (c) from 0 to 50% by weight of at least one C 1-12 alkyl (meth) acrylate; (d) from 0 to 10% by weight of at least one ethylenically unsaturated monomer comprising an acid group; (e) from 0 to 10% by weight of at least one ethylenically unsaturated monomer comprising an amine group; and (f) from 0 to 20% by weight of at least one non-ionic ethylenically unsaturated monomer differing from (b), (c) and (e), the sum of (a)+(b)+(c)+(d)+(e)+(f) being 100% by weight, in a first emulsion polymerisation in the presence of at least one non-ionic emulsifier, and thereafter, in the aqueous liquid containing the cationic prepolymer a second emulsion polymerisation is carried out, in the presence of at least one polymerisation initiator, of a monomer mixture comprising (i) from 10 to 70% by weight of at least one of an optionally substituted styrene or (meth) acrylonitrile; (ii) from 30 to 90% by weight of at least one CMS alkyl (meth) acrylate; (iii) from 0 to 30% by weight of at least one vinyl ester of linear or branched C1-30 carboxylic acids; and (iv) from 0 to 30% by weight of at least one non-ionic ethylenically unsaturated monomer differing from (i), (ii) and (iii), the sum of (i)+(ii)+(iii)+(iv) being 100% by weight, and the first emulsion polymerisation and/or the second emulsion polymerisation is optionally carried out in the presence of from 0 to 10% by weight of at least one polymerisation regulator. The polymer dispersions according to the present invention are suitable for use as sizing agents for paper, board and card board.