Concentrated solutions of 1,4-dialkylamino- anthraquinone...

Details Concentrated solutions of 1,4-dialkylamino- anthraquinone... Concentrated solutions of 1,4-dialkylamino- anthraquinone...

C - Chemistry, Metallurgy

10

J

196/289, 44/6

C10J 1/22 (2006.01) C09B 1/32 (2006.01) C09B 67/44 (2006.01) C10L 1/00 (2006.01)

Patent

CA 1200657

ABSTRACT OF THE INVENTION The invention relates to concentrated solutions of dyes for petroliferous products and organic solvents, comprising an organic diluent phase and from 30 to 50% by weight of one or more 1.4-dialkyl-arylamino-anthraquinone dyes, where the two alkyl radicals are equal to each other or different from each other and contain from 8 to 20 carbon atoms and are obtained by reacting quinizarin or leucoquinizarin or mixtures thereof with one or more para-alkylanilines.

428764

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