Bleaching and dyeing; fluid treatment and chemical modification – Dye or potential dye composition – additive – treatment,... – Azo – acridone – or quinone dye
Reexamination Certificate
2003-05-27
2008-03-11
Douyon, Lorna M. (Department: 1751)
Bleaching and dyeing; fluid treatment and chemical modification
Dye or potential dye composition, additive, treatment,...
Azo, acridone, or quinone dye
C008S669000, C008S670000, C008S671000, C008S681000, C008S687000, C008S689000, C534S573000, C534S740000, C534S744000, C534S756000, C534S767000, C534S784000, C534S819000
Reexamination Certificate
active
07341607
ABSTRACT:
The present invention relates to novel yellow anionic dyes, a process for their preparation, certain novel intermediates for their preparation and the use of these dyes for dyeing natural or synthetic materials, in particular, paper.
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patent: 5545724 (1996-08-01), Moser
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W. Czajkowski, Dyes and Pigments, vol. 17, (1991), pp. 297-301.
Käser Adolf
Lennartz Michael
Weiss Sandra
Ciba Specialty Chemicals Corp.
Douyon Lorna M.
Khan Amina
Stevenson Tyler A.
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