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11 条记录 (耗时 0.013 秒)

    Surface-reacted precipitated calcium carbonate, process to make same, and uses thereof
    7.
    发明公开
    Surface-reacted precipitated calcium carbonate, process to make same, and uses thereof 有权
    法兰克福

    公开(公告)号：EP2070991A1

    公开(公告)日：2009-06-17

    申请号：EP07123077.5

    申请日：2007-12-12

    申请人： Omya Development AG

    发明人： Gerard, Daniel E. ,  Gane, Patrick A. C. ,  Schölkopf, Joachim ,  Weitzel, Hans-Joachim

    IPC分类号： C09C1/02 ,  D21H17/67

    CPC分类号： C09C1/022 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/12 ,  D21H17/69

    摘要： The present invention relates to a process for the preparation of a pigment comprising a surface-reacted precipitated calcium carbonate (PCC), the process comprising the steps of a) providing at least one precipitated calcium carbonate (PCC)-comprising pigment; b) providing H 3 O + ions; c) providing at least one anion being capable of forming water-insoluble calcium salts, said anion being solubilised in an aqueous medium; d) contacting said PCC-comprising pigment, with said H 3 O + ions and with said solubilised anions in an aqueous medium to form a slurry of surface-reacted PCC-comprising pigment, wherein said surface-reacted PCC comprises an insoluble, at least partially crystalline calcium salt of said anion formed on the surface of the PCC; wherein excess solubilised calcium ions are provided during step d). The present invention further relates to a slurry of surface-reacted PCC comprising pigment obtained by this process, its use as well as the surface-reacted PCC contained in the slurry.

    摘要翻译： 本发明涉及一种制备包含表面反应的沉淀碳酸钙（PCC）的颜料的方法，该方法包括以下步骤：a）提供至少一种沉淀碳酸钙（PCC）的颜料; b）提供H 3 O +离子; c）提供至少一种能够形成水不溶性钙盐的阴离子，所述阴离子溶解在水性介质中; d）将所述含PCC的颜料与所述H 3 O +离子和所述溶解的阴离子在水性介质中接触以形成表面反应的含PCC的颜料的浆料，其中所述表面反应的PCC至少包含不溶性的 所述阴离子的部分结晶钙盐形成在PCC的表面上; 其中在步骤d）期间提供过量溶解的钙离子。 本发明还涉及包含通过该方法获得的颜料的表面反应的PCC的浆料，其用途以及浆料中所含的表面反应的PCC。