Bleaching and dyeing; fluid treatment and chemical modification – Dye or potential dye composition – additive – treatment,... – Pigments used as dyes
Patent
1998-10-02
2000-03-07
Einsmann, Margaret
Bleaching and dyeing; fluid treatment and chemical modification
Dye or potential dye composition, additive, treatment,...
Pigments used as dyes
162126, 162162, 106495, 8919, 8102, C09B 6722, D21F 1100, D21H 1100
Patent
active
060334444
ABSTRACT:
A method and a color mixture for shading paper, and a shaded paper that comprises or consists of one or more layers made of the same or different pulps, which paper is intended to be used in connection with foodstuffs. The pulp or paper layer is treated with a color mixture of at least two optically cooperating pigments that are approved for foodstuffs, one of which is quinacridone red with the FDA registration details C.I. pigment violet 19, C.I. No. 73900 (Code of Federal Regulations, Food and Drugs, Title 21, Part 170-199), and constituting the primary component of the color mixture, in order to obtain a shaded paper with a value for the color coordinate b* that is between 0 and 3. The primary component may comprise between about 75-85 per cent of the color mixture with the rest at least one blue pigment, such as phthalocyanine blue.
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Katajima, "Water-Based Gravure Printing Inks Containing Epoxy Compound" Ab of JP 07242850 Sep. 1995.
Einsmann Margaret
Stora Kopparbergs Bergslags AB
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