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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。