Invention Application
- Patent Title: REINFORCED METAL OXIDE FLAKES FOR EFFECT PIGMENTS
- Patent Title (中): 用于影响色素的强化金属氧化物片
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Application No.: US12597498Application Date: 2008-04-23
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Publication No.: US20100192802A1Publication Date: 2010-08-05
- Inventor: Patrice Bujard , Redina Kote , Philippe Bugnon
- Applicant: Patrice Bujard , Redina Kote , Philippe Bugnon
- Applicant Address: US NY Tarrytown
- Assignee: CIBA CORPORATION
- Current Assignee: CIBA CORPORATION
- Current Assignee Address: US NY Tarrytown
- Priority: EP07107303.5 20070502
- International Application: PCT/EP2008/054877 WO 20080423
- Main IPC: C09B67/08
- IPC: C09B67/08 ; C08K3/30 ; C08K3/28 ; C08K3/22 ; B05D7/00

Abstract:
The present invention relates to a method for preparing (pearlescent) pigments, comprising the steps of: (1) coating of a sheet silicate with a desired metal oxide, wherein coated flakes are obtained, (2) delamination of the coated flakes obtained in step (1), wherein exfoliated coated flakes and exfoliated non-coated flakes are obtained, (3) separation of the exfoliated coated flakes from the exfoliated non-coated flakes, (4) coating the exfoliated coated flakes obtained in step (3) with metals, metal oxides, metal sulfides, metal nitrides or mixtures thereof, wherein a (pearlescent) pigment is obtained; to (pearlescent) pigments, obtainable by the process and to the use of the (pearlescent) pigments in paints, ink-jet printing, for dyeing textiles, for pigmenting coatings, printing inks, plastics, cosmetics, glazes for ceramics and glass.
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