Dyestuff solutions, their preparation and their use for...

Details Dyestuff solutions, their preparation and their use for... Dyestuff solutions, their preparation and their use for...

C - Chemistry, Metallurgy

09

B

8/4, 8/45

C09B 47/20 (2006.01) C09B 47/26 (2006.01) C09B 67/26 (2006.01) C09B 69/04 (2006.01) D21H 21/28 (2006.01)

Patent

CA 1142709

Abstract Aqueous solutions of copper phthalocyanine- sulphonic acid salts of the formula Image in which Cu-Pc a copper phthalocyanine radical, m a number from 1.8 to 3.0, q a number from 1.0 to 2.0,with the proviso that the sum m + q is a number from 2.8 to 4.0, and M? a mixture of An? and an ammonium ion of the formula Image wherein A? represents an alkali metal ion or NH4 ion, n represents a number from 0.8 to 2.0, m has the meaning indicated above, R1 and R2 designate hydrogen, C1-C4-alkyl or a radical -(CH2-CH2-O)p-H and R3 designates the radical -(CH2-CH2-O)p-H, wherein p is 1, 2, 3, 4, 5 or 6, process for the preparation of these solutions and their use for dyeing paper.

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