Pigment dispersions
    61.
    发明授权
    Pigment dispersions 失效
    颜料分散体

    公开(公告)号:US5030669A

    公开(公告)日:1991-07-09

    申请号:US524665

    申请日:1990-05-15

    摘要: A dispersion and a method therefor wherein the dispersion has composition A or B, whereinA is a nonaqueous dispersion comprising pigment particles having an average size of less than 0.1 micrometer dispersed in an organic medium, andB is an aqueous dispersion comprising certain classes of inorganic pigment particles having an average size of less than 0.1 micrometer dispersed in an aqueous medium, wherein said classes of inorganic pigment particles are selected from the group consisting of metal oxides and metal salts.The method of the invention comprises the steps of vaporizing a pigment or pigment precursor in the presence of a nonreactive gas stream to provide ultrafine pigment or pigment precursor particles, when pigment precursor particles are present, providing a second gas capable of reacting with said ultrafine pigment precursor particles and reacting said second gas with said ultrafine pigment precursor particles to provide ultrafine pigment particles, transporting said ultrafine pigment particles in said gas stream to a dispersing medium, to provide a dispersion of pigment particles in said medium.

    摘要翻译: 一种分散体及其方法,其中分散体具有组合物A或B,其中A是包含分散在有机介质中的平均尺寸小于0.1微米的颜料颗粒的非水分散体,B是包含某些类别的无机 分散在水性介质中的平均粒度小于0.1微米的颜料颗粒,其中所述类别的无机颜料颗粒选自金属氧化物和金属盐。 本发明的方法包括以下步骤:在存在无反应性气流的情况下,使颜料或颜料前体蒸发以提供超细颜料或颜料前体颗粒,当存在颜料前体颗粒时,提供能够与所述超细颜料反应的第二气体 前体颗粒并使所述第二气体与所述超细颜料前体颗粒反应以提供超细颜料颗粒,将所述气流中的所述超细颜料颗粒输送到分散介质中,以提供颜料颗粒在所述介质中的分散体。