公开(公告)号：US4500362A

公开(公告)日：1985-02-19

申请号：US552188

申请日：1983-11-15

申请人： Osamu Takahashi ,  Nobuo Yamamura ,  Yasuo Mukunoki ,  Shungi Ogawa ,  Yutaka Nakagawa

发明人： Osamu Takahashi ,  Nobuo Yamamura ,  Yasuo Mukunoki ,  Shungi Ogawa ,  Yutaka Nakagawa

IPC分类号： B01F3/12 ,  C09B67/46 ,  C09C1/56 ,  C09D17/00 ,  G03C1/825 ,  G03C8/48 ,  C09C1/00 ,  C04B31/40 ,  C09B1/00

CPC分类号： C09D17/001 ,  C09B67/0091 ,  G03C1/825 ,  G03C8/48

摘要： A process for preparing an aqueous dispersion of a pigment is disclosed. The process involves providing a surface active agent having a solubility of 0.1% or less in water at a temperature of about 25.degree. C. The agent is also soluble in an organic solvent. The agent is dispersed in water to provide an aqueous dispersion of the agent. The pigment is then dispersed in the aqueous dispersion of the agent to form the aqueous dispersion of the pigment. The dispersion causes less foaming, aggregation and sedimentation of the pigment particles when the dispersion is stored. The dispersion is particularly useful when utilizing carbon black as the pigment and applying the dispersion to the field of photographic materials. The presence of the surface active agent does not have secondary effects on photographic materials.

摘要翻译： 公开了一种制备颜料的水性分散体的方法。 该方法包括提供在约25℃的温度下在水中溶解度为0.1％或更低的表面活性剂。该试剂也可溶于有机溶剂。 将试剂分散在水中以提供试剂的水分散体。 然后将颜料分散在试剂的水分散体中以形成颜料的水性分散体。 当分散体储存时，分散体引起颜料颗粒的起泡，聚集和沉淀较少。 当使用炭黑作为颜料并将分散体施加到照相材料领域时，分散体特别有用。 表面活性剂的存在对照相材料没有二次影响。