发明名称 |
SURFACE-REACTED PRECIPITATED CALCIUM CARBONATE AND USES THEREOF |
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. |
申请公布号 |
EP2245095(B1) |
申请公布日期 |
2017.02.22 |
申请号 |
EP20080860503 |
申请日期 |
2008.12.02 |
申请人 |
Omya International AG |
发明人 |
GERARD, Daniel, E.;GANE, Patrick, A., C.;SCHÖLKOPF, Joachim;WEITZEL, Hans-Joachim |
分类号 |
C09C1/02;D21H17/67 |
主分类号 |
C09C1/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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