FINE-PARTICLE, CATIONIC POLYMER DISPERSIONS
    2.
    发明申请
    FINE-PARTICLE, CATIONIC POLYMER DISPERSIONS 审中-公开
    细粉,阳离子聚合物分散体

    公开(公告)号:WO2008071690A3

    公开(公告)日:2008-09-12

    申请号:PCT/EP2007063684

    申请日:2007-12-11

    Abstract: The invention relates to fine-particle, cationic polymer dispersions that can be obtained by emulsion polymerisation of ethylenically unsaturated monomers in an aqueous solution of a cationic pre-polymer as a dispersant. First, a cationic pre-polymer is produced by the polymerisation of: a) between 10 and 45 wt. % of at least one (meth)acrylic acid ester comprising an amino group and/or a quarternary ammonium group, and/or a (meth)acrylic amide, carrying an amino group and/or a quaternary ammonium group, b) between 40 and 85 wt. % of at least one optionally substituted styrol, c) between 0 and 20 wt. % of acrylic nitrile or methacrylic nitrile, d) between 1 and 15 wt. % of at least one ethylenically unsaturated carboxylic acid or an ethylenically unsaturated carboxylic acid anhydride, and e) between 0 and 20 wt. % of at least one non-ionic, ethylenically unsaturated monomer different from the monomers (b) and (c), the sum of (a) + (b) + (c) + (d) + (e) amounting to 100 wt. %, in a solution polymerisation in an organic solvent that can be mixed with water. The solution of the pre-polymer produced in this way is diluted with water, and then an emulsion polymerisation of a monomer mixture of: i) between 30 and 80 wt. % of acrylic nitrile and/or methacrylic nitrile, ii) between 5 and 50 wt. % of at least one C 1 to C 4 alkyl acrylate or at least one C 1 to C 4 alkyl methacrylate, iii) between 5 and 50 wt. % of at least one C 6 to C 14 alkyl acrylate or at least one C 6 to C 14 alkyl methacrylate, and iv) between 0 and 20 wt. % of a non-ionic monomer diferent from the monomers (i), (ii) und (iii), the sum of (i) + (ii) + (iii) + (iv) amounting to 100 wt. %, is carried out in the aqueous solution of the pre-polymer, in the presence of water-soluble polymerisation inhibitors. The invention also relates to the use of the fine-particle cationic polymer dispersions obtained in this way as materials and surface sizing agents for paper, paperboard and cardboard.

    Abstract translation: 细颗粒,阳离子聚合物分散体,其是通过烯属不饱和单体的乳液聚合而得到的阳离子预聚物的水溶液作为分散剂,其特征在于,首先通过聚合阳离子预聚物:A)10〜45重量%的至少一种(甲基)acrylsäureesters的%,则 具有氨基和/或季铵基团和/或(甲基)丙烯酰胺,从0%至20中携带的氨基和/或季铵基团,b)40至85重量%的至少一种任选取代的苯乙烯%,c)中 - 丙烯腈或甲基丙烯腈,d)1%至15重量%的至少一种烯属不饱和羧酸或烯键式不饱和羧酸酐和e)0至20个不同的非离子型重量的单体(b)和中的至少一个(C的%)的% 烯键式不饱和单体,(a)+(b)+(c)+(d)+(e)的总和= 100重量% 在与水混溶的有机溶剂和由此制得的预聚物的溶液的溶液聚合用水稀释,并且其后的单体混合物的预聚物乳液聚合的水溶液:1)30至80重量%的丙烯腈和/或甲基 ⅱ)5至50重量%的至少一种C 的%1 - Visual C 4 烷基酯或至少一种C 1 - ç< SUB> 4 -Alkylmethacrylates,ⅲ)5至50重量%的至少一种C 6 - Visual C 14 烷基酯或至少一种C 6 - Visual C 14 -Alkylmethacrylates和iv)0至20重量的单体的%(ⅰ),(ⅱ)和(ⅲ)各种非离子型单体,其中 (ⅰ)+的总和(ⅱ)+(ⅲ)+(IV)= 100所重量%时,导致水溶性聚合引发剂的存在下进行,以及使用细碎由此获得阳离子聚合物分散体的 作为纸张,纸板和纸板的质量和表面施胶剂。

    METHOD FOR PRODUCING AQUEOUS POLYMER DISPERSIONS CONTAINING AT LEAST ONE LIPOPHILIC ACTIVE SUBSTANCE AND THE USE THEREOF

    公开(公告)号:CA2655864A1

    公开(公告)日:2007-12-27

    申请号:CA2655864

    申请日:2007-06-05

    Applicant: BASF SE

    Abstract: The invention relates to a method for producing aqueous dispersions conta ining at least one lipophilic active substance by emulsion polymerization of ethylenically unsaturated monomers in an aqueous medium in the presence of at least one lipophilic active substance. The method according to the invent ion comprises the following steps: (i) emulsifying at least one lipophilic a ctive substance having a water solubility of not more than 5 g/l (establishe d at 25°C and 1013 mbar) and a melting point below 130°C, in an aqueous solu tion which contains at least one dispersion stabilizer, while producing an a queous solution of the active substance with an average particle size of not more than 1000 nm, and (ii) subjecting a monomer composition which contains at least 80% of a neutral, monoethylenically unsaturated monomer that can b e emulsified in water, in the aqueous dispersion of the active substance obt ained in step (1), to an emulsion polymerization. The invention also relates to the use of the dispersions obtained according to the invention as sizing agents for paper, paperboard and cardboard, for finishing and stabilizing t hermoplastic polymers, for material protection and crop protection.

    DISPERSIONES ACUOSAS DE DIMEROS DE ALQUILCETENO.

    公开(公告)号:ES2332387T3

    公开(公告)日:2010-02-03

    申请号:ES07729773

    申请日:2007-06-01

    Applicant: BASF SE

    Abstract: Dispersiones acuosas de dímeros de alquilceteno, que contienen, al menos, un 15% en peso de un dímero de alquilceteno así como, al menos, un almidón catiónico soluble en agua, sulfato de aluminio y, al menos, un producto de condensación formado por el ácido naftalinsulfónico y el formaldehído o por el ácido lignosulfónico o respectivamente sus sales, caracterizadas porque las dispersiones contienen, referido respectivamente al dímero de alquilceteno, desde un 2 hasta un 50% en peso de sulfato de aluminio, conteniendo las dispersiones, además, entre un 0,1 y un 5% en peso de un ácido carboxílico saturado con 1 hasta 10 átomos de carbono, de ácido bencenosulfónico, de ácido ptoluenosulfónico y/o de un ácido mineral, con un contenido en sulfato de aluminio comprendido entre un 2 y un 15% en peso.

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