WATER-INSOLUBLE COLORANT COMPOSITION

WIPO Patent Application WO/2023/053980

A1

The purpose of the present invention is to provide: a flavonoid colorant composition having been made insoluble in water; and a food, a cosmetic, a coating material for medicines or agrochemicals, a printing marker, stationery, a writing utensil, a printing ink, an ink-jet ink, a metallic ink, a paint, a colorant for plastics, a color toner, a florescent labeling agent, a fluorescent probe, or a chemical sensor, each containing the colorant composition. The present invention has been achieved based on the findings that a water-insoluble colorant composition comprising a flavonoid colorant coated with, infiltrated into, combined with, or adsorbed onto a metal or metal compound is insoluble in water and that the water-insoluble colorant composition is usable as a colorant in various applications.

JP3303942	PRODUCTION OF NATURAL RED PIGMENT
JPH0948925	GREEN DYE, METHOD FOR PREPARING IT, ANTIBACTERIAL DEODORANT CONTAINING IT, ANTIBACTERIAL AND DEODORIZING TEXTILE PRODUCTION CONTAINING IT AND METHOD FOR PREPARING THE PRODUCT
JP6080676	An extraction method of a citrus-fruits origin lipophilicity pigment ingredient

SEKIKAWA HIROSHI (JP)
TANAKA MASAAKI (JP)
YASUI KENGO (JP)

PCT/JP2022/034503

April 06, 2023

September 15, 2022

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DAINIPPON INK & CHEMICALS (JP)

C09B61/00; C09B63/00; C09B67/02; C09B67/20; C09C1/40; C09C3/08

WO2001055262A1	2001-08-02
WO2012124785A1	2012-09-20

JP2006070175A	2006-03-16
EP1798262A1	2007-06-20
JPH01230676A	1989-09-14
JPH02204751A	1990-08-14

ONO Takayuki (JP)

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