Invention Grant
- Patent Title: Weather-resistant pearlescent pigments, process for the production and use thereof
- Patent Title (中): 耐候珠光颜料,其生产和使用的方法
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Application No.: US14007383Application Date: 2012-03-28
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Publication No.: US09051471B2Publication Date: 2015-06-09
- Inventor: Michael Grüner , Thomas Schneider , Günter Kaupp
- Applicant: Michael Grüner , Thomas Schneider , Günter Kaupp
- Applicant Address: DE Hartenstein
- Assignee: ECKART GMBH
- Current Assignee: ECKART GMBH
- Current Assignee Address: DE Hartenstein
- Agency: The Webb Law Firm
- Priority: DE102011015338 20110328
- International Application: PCT/EP2012/055537 WO 20120328
- International Announcement: WO2012/130897 WO 20121004
- Main IPC: C09C1/28
- IPC: C09C1/28 ; C09C1/00 ; C09D5/36 ; C09D11/037 ; A61Q1/02 ; A61K8/02 ; A61K8/19 ; C09C1/40

Abstract:
The present invention relates to a weather-resistant pearlescent pigment which consists of a platelet-shaped substrate coated with one or more highly refractive metal oxides, the platelet-shaped substrate being selected from the group consisting of synthetic mica flakes, glass flakes, SiO2 flakes, Al2O3 flakes, synthetic boehmite flakes, BiOCl flakes and mixtures thereof, and a top layer, wherein the top layer consists of the following layers: a) a cerium-containing layer, selected from the group consisting of cerium oxide, cerium hydroxide, hydrated cerium oxide, and mixtures thereof, the cerium-containing layer being applied directly to the highly refractive metal oxide layer, and b) an organic-chemical compatibilizing layer, which comprises the reaction products of oligomeric silanes, wherein the oligomeric silanes have one or more amino groups, the organic-chemical compatibilizing layer being applied directly to the cerium-containing layer a).
Public/Granted literature
- US20140018439A1 Weather-Resistant Pearlescent Pigments, Process for the Production and Use Thereof Public/Granted day:2014-01-16
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