Invention Grant
- Patent Title: Interference pigments
- Patent Title (中): 干涉颜料
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Application No.: US12728790Application Date: 2010-03-22
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Publication No.: US08500901B2Publication Date: 2013-08-06
- Inventor: Reinhold Rueger , Klaus Ambrosius , Marcus Mathias , Helge Bettina Kniess
- Applicant: Reinhold Rueger , Klaus Ambrosius , Marcus Mathias , Helge Bettina Kniess
- Applicant Address: DE Darmstadt
- Assignee: Merck Patent GmbH
- Current Assignee: Merck Patent GmbH
- Current Assignee Address: DE Darmstadt
- Agency: Millen, White, Zelano & Branigan, P.C.
- Priority: DE10259301 20021217; DE10302589 20030122
- Main IPC: C09C1/0015
- IPC: C09C1/0015 ; C09C2200/1037 ; C09C1/0021 ; C09C1/0024 ; C09C1/0039 ; C09C1/3661

Abstract:
The present invention relates to interference pigments based on coated flake-form substrates which are distinguished by the fact in that they comprise (A) a layer of SiO2 having a layer thickness of 5-350 nm, (B) a high-refractive-index coating having a refractive index n of >1.8 and/or (C) an interference system consisting of alternating high- and low-refractive-index layers and optionally (D) an outer protective layer, and to the use thereof in paints, coatings, automotive paints, powder coatings, printing inks, security printing inks, plastics, ceramic materials, glasses, paper, in toners for electrophotographic printing processes, in seed, in greenhouse sheeting and tent awnings, as absorbers in the laser marking of paper and plastics, in cosmetic formulations, for the preparation of pigment pastes with water, organic and/or aqueous solvents, and for the preparation of pigment preparations and dry preparations.
Public/Granted literature
- US20100175587A1 INTERFERENCE PIGMENTS Public/Granted day:2010-07-15
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