105261-77-6

Upstream product

• 623-03-0 4-Cyanochlorobenzene 
• 924-88-9 diisopropyl succinate 
• 4210-32-6 4-tert-butyl benzonitrile 
• 117482-76-5 4-n-octadecylthiobenzonitrile 

Relevant academic research and scientific papers

COLORING COMPOSITION, PHOTOSENSITIVE COLORING COMPOSITION, COLOR FILTER, AND LIQUID CRYSTAL DISPLAY DEVICE

PROBLEM TO BE SOLVED: To provide a coloring composition and a photosensitive coloring composition having excellent viscosity stability and to provide a high-quality color filter and a color liquid crystal display device having less foreign matters and excellent solvent resistance by using the coloring composition and the photosensitive coloring composition. SOLUTION: There is provided a coloring composition which comprises a pigment (A), a dispersant (B), a binder resin (C) and an organic solvent (S), wherein the pigment (A) includes a diketopyrrolopyrrole-based pigment represented by the chemical formula (1) and the solvent includes a solvent (S1) having a boiling point at 760 mmHg of 120°C or more and 180°C or less and a viscosity at 25°C of 0.5 mPa s and less than 1.0 mPa s. SELECTED DRAWING: Figure 1 COPYRIGHT: (C)2020,JPOandINPIT

PIGMENT COMPOSITION FOR RED COLOR FILTER, METHOD FOR PRODUCING THE SAME, COLOR COMPOSITION USING THE SAME, AND COLOR FILTER

Disclosed is a fine diketopyrrolopyrrole pigment composition which enables achievement of a good contrast ratio. Generation of undesired matter during a heating step of a red color film containing the pigment composition is remarkably reduced when compared with the conventional ones. Also disclosed are a color composition using the diketopyrrolopyrrole pigment composition, a red color film and a color filter. Specifically disclosed is a diketopyrrolopyrrole pigment composition obtained by reacting 1 mole of a succinic acid diester with 2 moles in total of mixed nitriles having specific structural formulae. Also specifically disclosed are a color composition using the diketopyrrolopyrrole pigment composition, a red color film and a color filter.

HEAT-STABLE DIKETOPYRROLOPYRROLE PIGMENT MIXTURES

The present invention relates to a process for the preparation of a mixture comprising at least two structurally different diketopyrrolopyrrole pigments of formula (1) wherein A1 and A2 are each independently of the other an aromatic or heteroaromatic radical, by reacting a succinic acid ester with at least one unsubstituted or substituted aromatic or heteroaromatic nitrile, which process comprises carrying out the reaction in the presence of at least one compound of formula (2) wherein A is an aromatic or heteroaromatic radical, R3is hydrogen, halogen, methyl, methoxy, -CF3 or -CN, R4 is a linear or, from C3 upwards, optionally branched C1-C30alkyl, C6-C10aryl or C6-C24aralkyl radical, X is -S-, -0-, -CR5R5'-, -COO-, -CONR5-, -SO-, SO2-, -SO2NR5- or -NR5 -and R5 and R5'are each independently of the other hydrogen or a linear or, from C3 upwards, optionally branched C1-C30alkyl, C6-C10aryl or C6-C24aralkyl radical, to the use of such a mixture in the colouring of organic material and in cosmetics, and also to novel diketopyrrolopyrrole pigment mixtures.

Monophase solid solutions containing asymmetric pyrrolo ?4,3-c! pyrroles as hosts

The present invention relates to a solid solution consisting of 60-90 mol-% of an asymmetric 2,5-dihydro-1,4-diketopyrrolo?3,4-c!pyrrole of the formula (I) STR1 in which G1 and G2 independently of one another are different substitute