C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
260/199
C09B 47/04 (2006.01) C09B 67/00 (2006.01) C09B 67/22 (2006.01) C09B 69/02 (2006.01) C09B 69/04 (2006.01)
Patent
CA 1089450
TREATMENT OF PHATHALOCYANINE PIGMENTS ABSTRACT OF THE DISCLOSURE Process for treating a pigment by contacting a phthalocyanine pigment with a polar aliphatic solvent which is at least partially water-miscible, and separating the solvent from the treated pigment, in which process there is added to the phthalocyanine pigment before it is contacted with the solvent or during the contacting, a minor proportion of a sulphonated phthalocyanine-amine derivative.
277832
Robertson George H.
Wheeler Ian R.
Ag Ciba-Geigy
Fetherstonhaugh & Co.
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