Bleaching and dyeing; fluid treatment and chemical modification – Dye or potential dye composition – additive – treatment,... – Azo – acridone – or quinone dye
Reexamination Certificate
2011-03-22
2011-03-22
Douyon, Lorna M (Department: 1764)
Bleaching and dyeing; fluid treatment and chemical modification
Dye or potential dye composition, additive, treatment,...
Azo, acridone, or quinone dye
C008S639000, C008S641000, C008S662000, C008S668000, C008S670000, C008S673000, C008S680000, C008S681000, C008S682000, C008S683000, C008S690000, C008S691000, C008S693000, C008S619000, C008S919000
Reexamination Certificate
active
07909892
ABSTRACT:
The present invention relates storage stable aqueous dye solutions comprisinga) 5 to 30% by weight of a dye of the formulain which K is a residue of a coupling component of the acetoacetanilide, pyridone, pyrazolone or pyrimidine series and M is hydrogen, an alkali metal or alkaline earth metal, ammonium or alkyl ammonium,b) 0.05 to 5% by weight of one or more compounds of the formulaor a residue of the formulain whichA, X, Y, R, P and Q are defined herein,c) an organic or an inorganic base or mixtures thereof,d) if desired, further additives ande) water,a process for their preparation and the use thereof for the dyeing, in particular of paper.
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H.A. Lubs, ed., Robert E. Krieger Publishing Co. (1955) “The Chemistry of Synthetic Dyes and Pigments” pp. 97-101.
Heneghan Michael
Käser Adolf
Lautenbach Holger
BASF SE
Douyon Lorna M
Khan Amina
Loggins Shiela A.
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