- 专利标题: Composite pigmentary material
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申请号: US59754申请日: 1993-05-12
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公开(公告)号: US5509960A公开(公告)日: 1996-04-23
- 发明人: Leslie A. Simpson , John Robb , Banford Johnathan , Paul F. Dietz , John Temperley
- 申请人: Leslie A. Simpson , John Robb , Banford Johnathan , Paul F. Dietz , John Temperley
- 申请人地址: GBX
- 专利权人: Tioxide Group Services Limited
- 当前专利权人: Tioxide Group Services Limited
- 当前专利权人地址: GBX
- 优先权: GBX9211822 19920604
- 主分类号: C08J3/12
- IPC分类号: C08J3/12 ; C09B67/08 ; C09B67/10 ; C09C1/00 ; C09C1/02 ; C09C1/04 ; C09C1/22 ; C09C1/36 ; C09C3/00 ; C09C3/06 ; C09C3/10 ; C09D17/00 ; D21H17/67 ; D21H19/38
摘要:
A composite particulate pigmentary material is disclosed which comprises an association of at least two chemically distinct materials in which the particles of one material carry a positive surface charge and the particles of the second material carry a negative surface charge and particles are held in association as a result of these surface charges. Also disclosed is a method for preparing composite particulate pigmentary material comprising forming aqueous dispersions of two particulate materials under conditions in which the surface charges of the particles of the two materials are of different signs and mixing the dispersions. Typical materials useful for preparing the composite include inorganic pigments, fillers and extenders and organic polymeric microspheres. The product is useful as a pigment in, for example, paints, inks, paper and plastics.
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