Treatment of pigments with amines

Details Treatment of pigments with amines Treatment of pigments with amines

C - Chemistry, Metallurgy

09

B

6/197

C09B 67/36 (2006.01) C09B 67/18 (2006.01)

Patent

CA 1118961

Case 3-11455/MA 1718/+ Canada TREATMENT OF PIGMENTS WITH AMINES Abstract of the Disclosure A process for the treatment of an azo pigment comprises contacting the pigment with an aromatic, aliphatic or cycloaliphatic amine maintaining the temperature above the melting point of the amine compound and subsequently contacting the pigment and amine composition with water at a pH such that the amine is completely dissolved in the water and isolating the amine free pigment.

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