发明授权
- 专利标题: Transparent colored pigments
- 专利标题(中): 透明色素
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申请号: US436861申请日: 1982-10-26
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公开(公告)号: US4435220A公开(公告)日: 1984-03-06
- 发明人: Takaji Watanabe , Tamio Noguchi
- 申请人: Takaji Watanabe , Tamio Noguchi
- 申请人地址: DEX Darmstadt
- 专利权人: Merck Patent Gesellschaft mit beschrankter Haftung
- 当前专利权人: Merck Patent Gesellschaft mit beschrankter Haftung
- 当前专利权人地址: DEX Darmstadt
- 优先权: JPX56-170148 19811026
- 主分类号: C09C3/00
- IPC分类号: C09C3/00 ; A61K8/11 ; A61K8/26 ; A61Q1/02 ; C09C1/00 ; C09C3/06 ; C04B31/00
摘要:
Transparent, colored pigments based on platelet-shaped, transparent substrates, such as mica, talc or glass, are coated with colored metal oxides or metal hydroxides, wherein the metal oxide or hydroxide layer contains 0.1-5% by weight of an alkaline earth metal compound. These new, transparent, colored pigments are prepared by a process in which a platelet-shaped, transparent substrate, such as mica, talc or glass, is coated, in the presence of a base, with a colored metal oxide or hydroxide, and 0.1 to 5% by weight of an alkaline earth metal oxide or hydroxide is incorporated in the layer. The pigments have improved dispersibility, gloss, color power and stability to heat and weathering and also filling and adhesion properties. The pigments can be used for all the customary purposes, especially in cosmetics.
公开/授权文献
- US3931243A Production of phthalic anhydride 公开/授权日:1976-01-06
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