EFFECT PIGMENT AND USE THEREOF IN COSMETIC, FOOD AND PHARMACEUTICAL SECTORS

To provide a red effect pigment based on SiOflakes which is not only light-stable, but also has comparatively high hiding power, can be incorporated very well into each application system and, at the same time, only have little or no influence on optical properties, in particular the luster, color p...

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Bibliographische Detailangaben
Hauptverfasser:	PFAFF GERHARD, DOREEN WARTHE, VERONIKA HOCHSTEIN, XENIA PETSITIS, FOERDERER CORNELIA, DIETZ JOHANN
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ADHESIVES CHEMISTRY DYES FOODS OR FOODSTUFFS FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BYSUBCLASSES A23B - A23J HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS POLISHES PREPARATION OF CARBON BLACK PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OFNUTRITIVE QUALITIES, PHYSICAL TREATMENT THEIR TREATMENT, NOT COVERED BY OTHER CLASSES TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
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Beschreibung
Zusammenfassung:	To provide a red effect pigment based on SiOflakes which is not only light-stable, but also has comparatively high hiding power, can be incorporated very well into each application system and, at the same time, only have little or no influence on optical properties, in particular the luster, color purity or the like.SOLUTION: The present invention relates to effect pigments that are based on transparent undoped SiOflakes, are intensely colored and light-stable, and are used in pigment mixtures and cosmetic formulations and for coloring food and pharmaceutical products. The effect pigments are prepared such that SiOflakes are surrounded by an iron-oxide layer having a thickness of 30-150 nm and, at the same time, all have an identical thickness in the range of 250-400 nm.SELECTED DRAWING: None 【課題】ＳｉＯ２フレークをベースとし、光に安定であるだけでなく、比較的高い隠蔽力をも有し、それぞれの適用系に非常に良好に混合することができると同時に、特に光沢および色純度などの光学的性質に、僅かな程度まで影響を及ぼすだけであるか、全く影響を及ぼさない赤色エフェクト顔料を提供すること。【解決手段】透明で非ドープのＳｉＯ２薄片をベースとし、極めて強く着色され、光安定性を有し、顔料混合物、化粧品配合物における、ならびに食品および医薬品を着色するためのエフェクト顔料を、３０〜１５０ｎｍの厚さを有する酸化鉄層に取り囲まれると同時に、すべてのＳｉＯ２薄片が２５０〜４００ｎｍの範囲の同じ厚さを有するように調製する。【選択図】なし