摘要:
Pigment compositions containing organic pigments with an outstanding migration-free property and an excellent rheology at high concentration, and derivatives thereof containing heterocyclic substituents. The pigment compositions contains (a) carbon black or an organic pigment containing a chromophore Q1 of the following formula, wherein Z1 and Z2 are O or N—, C· is a carbon atom with an electron in a p orbital, and n is an integer from 1 to 4; and (b) a compound containing a chromophore of the following formula (II), wherein Q2 is an m-valent residue of carbon black or of the chromophore Q1; G1 is preferably and R1, R2, R3, R4, R5, R6, and R8 are preferably all H; m is an integer from 1 to 4. The pigment compositions can be used as rheology modifiers, preferably for pigmented coating compositions.
摘要:
An ink contains at least a pigment, wherein the pigment is a solid solution of C.I. Pigment Red 202 and C.I. Pigment Violet 19, and a primary particle diameter D (nm) of the pigment and a 50%-cumulative diameter D 50 (nm) in particle diameter distribution of the pigment satisfy a relation of D×0.95 ≤(= 50 ≤(= 90 (nm) in particle diameter distribution of the pigment and the 50%-cumulative diameter D 50 (nm) satisfy a relation of 1.5 ≤(= 90 /D 50 ≤(=
worin A für einen durch ein oder mehrere Fluoratome substituierten organischen Rest steht, B für H, F, Cl, Br oder für einen ggf. substituierten organischen Rest steht, der ggf. zusammen mit A einen Ring bilden kann
摘要:
A pigment dispersion comprising a colour pigment represented by Formula (I) wherein, R1 to R8 are independently selected from the group consisting of hydrogen, an alkyl group and a halogen; and a polymeric dispersant having via a linking group covalently linked to its polymeric backbone at least one pending chromophore group wherein the at least one pending chromophore group is a chromophore group occurring as a side group on the polymeric backbone and not a group in the polymeric backbone itself or occurring solely as an end group of the polymeric backbone, and the at least one pending chromophore group is represented by the Formula (II) wherein, L is a linking group forming a covalent bond with the polymeric backbone; and R1 to R8 are independently selected from the group consisting of hydrogen, an alkyl group and a halogen. A method for preparing a pigment dispersion is also disclosed.
摘要:
The invention is directed to a method or use of 2,9-dichloro-quinacridone as a crystal phase inhibitor during the beta-quinacridone or gamma-quinacridone crude pigment particle size reduction processes. 2,9-dichloroquinacridone is added to the milling composition of the crude gamma or crude beta quinacridone.
摘要:
A water-based pigment dispersion for ink-jet ink and a method of producing the same, and an ink composition for ink-jet recording comprising the water-based pigment dispersion for ink-jet ink as a main component are provided. A method of producing the water-based pigment dispersion for ink-jet ink comprises a kneading process for kneading a mixture containing a styrene-based resin, a quinacridone-based pigment, a phthalimidomethylated quinacridone-based compound, an alkali metal hydroxide and a humectant to produce a solid and colored kneaded mixture, and a dispersing process for dispersing the solid and colored kneaded mixture in an aqueous medium.
摘要:
The present invention relates to novel inkjet inks, printing inks and electrophotographic toners or developers comprising novel quinacridone pigment compositiond, a process for their production and to their use.