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    AQUEOUS PIGMENT DISPERSION
    2.
    发明公开
    AQUEOUS PIGMENT DISPERSION 审中-公开
    水性颜料分散体

    公开(公告)号：EP3178857A1

    公开(公告)日：2017-06-14

    申请号：EP16201828.7

    申请日：2016-12-01

    申请人： Dow Global Technologies LLC ,  ROHM AND HAAS COMPANY

    发明人： DEROCHER, Jonathan P. ,  HENDERSON, Kevin J. ,  SAN MIGUEL RIVERA, Lidaris ,  VAN DYK, Antony K.

    IPC分类号： C08F220/58 ,  C08L33/14 ,  C09D133/14

    CPC分类号： C09D171/02 ,  C08F220/58 ,  C08K3/22 ,  C08K2003/2241 ,  C08L33/14 ,  C09D17/001 ,  C09D17/002 ,  C09D17/008 ,  C09D133/14 ,  C08F2220/585 ,  C08F220/20 ,  C08F220/06

    摘要： The present invention relates to a stable aqueous pigment dispersion including: an aqueous medium, pigment particles, and from 0.1% to 15%, by weight based on the weight of pigment, of a dispersant, the dispersant including: (1) a first water-soluble polymer having an acid number of from 0 to 80 and a calculated Mn of from 450 Daltons to 10,000 Daltons; and 2) a second water-soluble polymer comprising, as copolymerized units, from 30% to 100% by weight, based on the weight of the second polymer sulfonic acid monomer, or a salt thereof; and from 0% to 10% by weight, based on the weight of the second polymer, carboxylic acid monomer, or a salt thereof; wherein the second polymer has a calculated Mn of from 1000 to 25,000 Daltons; wherein the dispersant comprises a proportion of the first polymer to the second polymer of from 0.1:1 to 10:1 on a solids basis, and the first polymer and the second polymer are miscible in those proportions; and wherein the dispersant is substantially free of structural units of phosphorus acid monomers and their salts. The invention also relates to a method for forming the stable aqueous dispersion and a dry coating formed from the aqueous dispersion. The stable aqueous dispersion is useful, inter alia , for forming certain composite particles.

    摘要翻译： 本发明涉及一种稳定的水性颜料分散体，其包含：水性介质，颜料颗粒和基于颜料重量的0.1重量％至15重量％的分散剂，所述分散剂包括：（1）第一水 - 酸值为0至80且计算的Mn为450道尔顿至10,000道尔顿的可溶性聚合物; 和2）以所述第二聚合物磺酸单体或其盐的重量为基准计，包含30-100重量％作为共聚单元的第二水溶性聚合物; 和基于所述第二聚合物的重量为0重量％至10重量％的羧酸单体或其盐; 其中所述第二聚合物具有1000至25,000道尔顿的计算Mn; 其中所述分散剂以固体为基准包含0.1:1至10:1的所述第一聚合物与所述第二聚合物的比例，并且所述第一聚合物与所述第二聚合物可以这些比例混溶; 并且其中分散剂基本上不含磷酸单体及其盐的结构单元。 本发明还涉及形成稳定水分散体的方法和由该水分散体形成的干涂层。 其中，稳定的水分散体尤其可用于形成某些复合颗粒。

    COATED TITANIUM DIOXIDE DISPERSIONS
    3.
    发明公开
    COATED TITANIUM DIOXIDE DISPERSIONS 审中-公开
    BESCHICHTETE TITANDIOXIDDISPERSIONEN

    公开(公告)号：EP3145999A1

    公开(公告)日：2017-03-29

    申请号：EP15725860.9

    申请日：2015-05-21

    申请人： Huntsman P&A UK Limited

    发明人： EDWARDS, John L ,  GIBBONS, Linda ,  BURKE, Alison ,  BROWN, Andrew E ,  JONES, Anthony G

    IPC分类号： C09C1/36

    CPC分类号： C09C1/3661 ,  C01P2004/04 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2004/84 ,  C01P2006/40 ,  C01P2006/60 ,  C09D17/008

    摘要： The invention provides a method for preparing a titanium dioxide product, comprising the steps of: -providing a dispersion comprising titanium dioxide particles, wherein the dispersion contains from 50g/l to 600g/l TiO
    2 ; and then, in any order, -applying an inorganic coating to the titanium dioxide particles, whilst maintaining colloidal stability before and/or during the coating step; -concentrating the dispersion, by subjecting the dispersion to the effects of cross-flow filtration and continuing the cross-flow filtration process until the dispersion is in a concentrated form that contains 800g/l or more TiO
    2 ; so as to provide a titanium dioxide product in the form of a concentrated dispersion of coated particles. The concentrated dispersion of coated particles may optionally be dispersed within a vehicle to obtain a pigment product.

    摘要翻译： 本发明提供了制备二氧化钛产品的方法，包括以下步骤： - 提供包含二氧化钛颗粒的分散体，其中分散体含有50g / l至600g / l的TiO 2; 然后以任何顺序，将无机涂层施用于二氧化钛颗粒，同时在涂布步骤之前和/或期间保持胶体稳定性; 通过使分散体经受交叉流过滤的作用并继续进行交叉流过滤，直到分散体为含有800g / l或更多的TiO 2的浓缩形式; 以提供涂覆颗粒的浓缩分散体形式的二氧化钛产品。 涂覆颗粒的浓缩分散体可以任选地分散在载体中以获得颜料产品。

    METHOD FOR PRODUCING DISPERSION OF RUTILE-TYPE TITANIUM OXIDE PARTICLES
    5.
    发明公开
    METHOD FOR PRODUCING DISPERSION OF RUTILE-TYPE TITANIUM OXIDE PARTICLES 有权
    VERFAHREN ZUR HERSTELLUNG EINER分散剂AUS RUTIL-TITANOXIDTEILCHEN

    公开(公告)号：EP2607318A4

    公开(公告)日：2015-08-05

    申请号：EP11818261

    申请日：2011-08-15

    申请人： SAKAI CHEMICAL INDUSTRY CO

    发明人： MORITA TAKANORI ,  NAKAGAWA KENICHI ,  NOMURA ATSUSHI

    IPC分类号： C01G23/053 ,  B01J31/38 ,  C01G23/047 ,  C08K3/20 ,  C08L101/00 ,  C09C1/36 ,  C09D17/00 ,  G02B1/04

    CPC分类号： B01J31/38 ,  C01G23/047 ,  C01G23/0536 ,  C01P2002/52 ,  C01P2002/54 ,  C01P2002/72 ,  C01P2004/51 ,  C01P2004/62 ,  C01P2006/12 ,  C08L101/00 ,  C09C1/3607 ,  C09D17/008 ,  G02B1/04

    摘要： The invention provides a process for producing an aqueous dispersion of particles of rutile titanium oxide, which comprises: a first step in which after a chloride ion concentration of an aqueous solution of titanium tetrachloride is adjusted to 0.5 mole/L or more and less than 4.4 mole/L, the aqueous solution of titanium tetrachloride is heated at a temperature in a range of from 25°C to 75 °C to hydrolyze the titanium tetrachloride, thereby obtaining a slurry containing the thus precipitated particles of rutile titanium oxide; a second step in which the slurry obtained in the first step is filtered and washed with water to remove water-soluble salts dissolved therein from the slurry; a third step in which the slurry obtained in the second step is subjected to a hydrothermal reaction in the presence of an organic acid; a fourth step in which the slurry obtained in the third step is filtered and washed with water to remove water-soluble salts dissolved therein from the slurry; a fifth step in which an acid is added to the slurry obtained in the fourth step to deflocculate the slurry, and the resulting slurry is subjected to wet dispersion treatment, thereby obtaining a dispersion; and a sixth step in which excess acid and water-soluble salts are removed from the dispersion obtained in the fifth step.

    摘要翻译： 本发明提供一种制备金红石型氧化钛颗粒的水性分散体的方法，其包括：第一步骤，其中将四氯化钛水溶液的氯离子浓度调节至0.5摩尔/升以上且小于4.4倍 摩尔/ L，将四氯化钛水溶液在25℃至75℃的温度范围内加热以水解四氯化钛，从而获得含有如此沉淀的金红石型氧化钛颗粒的浆料; 将第一步骤中获得的浆液过滤并用水洗涤以从浆料中溶解其中溶解的水溶性盐的第二步骤; 在第二步骤中获得的浆液在有机酸存在下进行水热反应的第三步骤; 将第三步骤中获得的浆料过滤并用水洗涤以从浆料中除去溶解在其中的水溶性盐的第四步骤; 在第四工序中得到的浆料中加入酸以使浆料脱絮凝的第五步骤，对得到的浆料进行湿式分散处理，得到分散液; 以及从第五步骤中获得的分散体中除去过量的酸和水溶性盐的第六步骤。

    PIGMENT DISPERSION
    9.
    发明公开
    PIGMENT DISPERSION 有权
    颜料分散体

    公开(公告)号：EP2087045A1

    公开(公告)日：2009-08-12

    申请号：EP07835333.1

    申请日：2007-10-17

    申请人： Akzo Nobel N.V. ,  EKA Chemicals AB

    发明人： GREENWOOD, Peter ,  LAGNEMO, Hans

    IPC分类号： C09C1/30 ,  C09D7/12 ,  C09D17/00

    CPC分类号： C09C1/3081 ,  B82Y30/00 ,  C01P2004/64 ,  C01P2006/12 ,  C01P2006/22 ,  C09D11/037 ,  C09D17/004 ,  C09D17/006 ,  C09D17/007 ,  C09D17/008

    摘要： The invention relates to a method of producing a substantially aqueous pigment dispersion substantially free from an organic binder comprising mixing at least one water- soluble or water-dispersible silane compound and colloidal silica particles to form 5 silanized colloidal silica particles in an aqueous dispersion whereby said at least one silane compound is mixed with colloidal silica particles in a weight ratio of silane to silica of from about 0.2 to about 1.5, mixing said silanized colloidal silica particles with an organic and/or inorganic pigment, wherein the weight ratio of silica to pigment is from about 0.001 to about 0.8 to form said substantially aqueous pigment dispersion. The 10 invention also relates to an aqueous pigment dispersion according to the method defined herein, and a pigment dispersion substantially free from an organic binder comprising silanized colloidal silica particles, wherein the weight ratio of silane to silica is from about 0.2 to about 1.5; and an organic and/or inorganic pigment, wherein the weight ratio of silica to pigment is from about 0.001 to about 0.8. 15