- Patent Title: Process for preparing metal oxide coated aluminium effect pigments
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Application No.: US14397721Application Date: 2013-05-10
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Publication No.: US09701844B2Publication Date: 2017-07-11
- Inventor: Aron Wosylus , Raimund Schmid
- Applicant: BASF SE
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: EP12168821 20120522
- International Application: PCT/IB2013/053803 WO 20130510
- International Announcement: WO2013/175339 WO 20131128
- Main IPC: C09C1/64
- IPC: C09C1/64 ; C09C1/00 ; C09C3/06

Abstract:
The present invention relates to a process for preparing a colored effect pigment, comprising: (i) coating aluminum-based substrate particles in an aqueous coating medium with at least one metal oxide layer, wherein the metal oxide is selected from a titanium oxide, an iron oxide, or any mixture thereof, (ii) providing a mixture of the coated aluminum-based substrate particles and a particulate inorganic non-metallic material in the aqueous coating medium by adding the particulate inorganic non-metallic material to the aqueous coating medium, and (iii) separating the mixture of the coated aluminum-based substrate particles and the particulate inorganic non-metallic material from the aqueous coating medium and subjecting the separated mixture to a thermal drying step so as to obtain a dry colored effect pigment material.
Public/Granted literature
- US20150104573A1 PROCESS FOR PREPARING METAL OXIDE COATED ALUMINIUM EFFECT PIGMENTS Public/Granted day:2015-04-16
Information query
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