摘要:
An example of an inkjet ink composition includes a pigment, a dispersion synergist, a metal oxide, a polar solvent and water. The pigment is selected from the group consisting of a quinacridone and a phthalocyanine. The dispersion synergist has a structure of the pigment substituted with at least one solubilizing moiety selected from the group consisting of an ionic moiety, a non-ionic moiety, and a combination thereof.
摘要:
The present disclosure is drawn to aqueous pigment dispersions. In one example, an aqueous pigment dispersion can include from 40 wt% to 90 wt% water, from 2 wt% to 30 wt% organic co-solvent, from 7.5 wt% to 30 wt% quinacridone pigment, from 0.5 wt% to 3.5 wt% styrene-acrylic dispersant, and from 0.5 wt% to 3.5 wt% hydrophilic polyurethane dispersant having an acid number from 20 to 100. The styrene-acrylic dispersant and the hydrophilic polyurethane dispersant can be present at a weight ratio from 1:5 to 5:1.
摘要:
The present disclosure relates to Quinacridone pigment and a process of preparation thereof. The Quinacridone pigment of the present disclosure exhibit higher chemical resistance to solvents, higher stability and higher resistance to acid and alkali.
摘要:
Novel crystal forms of solid solutions of 2,9-dimethyoxyquinacridone and 2,9- dichloroquinacridone. The crystal forms may be formed by a process comprising the steps of: a) heating a mixture of 2,5-di(4-methoxyanilino)terephthalic acid, and 2,5-di(4- chloroanilino)terephthalic acid in polyphorsphoric acid at a temperature less than 1050C to form a mixture of 2,9-dimethoxyquinacridone and 2,9-dichloroquinacridone; b) combining the mixture of 2,9-dimethoxyquinacridone and 2,9-dichloroquinacridone with water; and c) heating the mixture of 2,9-dimethoxyquinacridone and 2,9- dichloroquinacridone at a temperature not more than 110°C. Another crystal form may be formed by the process of heating a mixture of 2,9- dimethoxyquinacridone and 2,9-dichloroquinacridone in a polar aprotic solvent. These products are may be used for coloring fibers, plastics, paints, coatings, printing inks, color filters, cosmetics, automotive coatings, textiles, fibers, powder coatings, in-mold coatings, laminate films, and the like.