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Spray-dried dye compositions, process for the production and use thereof
专利权人:
Volker Lischewski;Christoph Roth;Michael Felicetti;Katrin Schwager
发明人:
Volker Lischewski,Christoph Roth,Michael Felicetti,Katrin Schwager
申请号:
US13375542
公开号:
US10392513B2
申请日:
2010.06.02
申请国别(地区):
US
年份:
2019
代理人:
摘要:
The invention relates to spray-dried, washfast dye compositions, preferably in the form of pigment powders, having a bleeding rate of ≤;0.5% and consisting of water-soluble functional dyes, preferably food dyes, which are firmly incorporated in a silica matrix. Apart from low bleeding of dye, these compositions are remarkable for their high stability to pH changes and/or ascorbic acid. The invention is also directed to the production of the dye compositions and the use thereof. The dye compositions are preferably employed in coloring foods, cosmetics, pharmaceutical products, but also in other uses.
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