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Patent Picks—New Rodlike C.I. Pigment, Broad-spectrum Preservative; Sensory Activators and More
By: Rachel L. Grabenhofer
Posted: January 26, 2011
Chosen biweekly by Rachel Grabenhofer, editor of Cosmetics & Toiletries magazine, for their relevance to personal care, Patent Picks are taken from publicly available sources. This edition features a mix of recent patents and patent applications related to color, sensory, hair, skin, delivery and antimicrobial technologies.
C.I. pigment Violet 37 in rodlike form
US Patent Application 20110009536
Publication date: Jan. 13, 2011
Assignee: Ciba Corp.
This invention is directed to a new C.I. Pigment Violet 37 in rodlike form, a process for its preparation and its use for coloring high molecular weight organic material. The described pigment has a length of 0.5 to 30 μm, a width of 0.05 to 1 μm, especially 0.100 to 0.500 μm, and an average thickness of 0.01 to 0.200 μm, especially 0.03 to 0.100 μm. According to the inventors, new color properties are obtained with the pigment; for example, different colors in remission and transmission, or different colors depending upon the viewing angle. The pigment is reportedly useful for purposes such as decorative cosmetic preparations and coatings and inks, including security printing inks. Further, it is possible to combine two colors (violet/green or violet/brown) in the matrix of the application medium using only one pigment, which is a unique effect.
Anhydrous, transfer-resistant cosmetic lip compositions
US Patent 7871633
Publication date: Jan. 18, 2011
Assignee: The Procter & Gamble Company