METHOD FOR PRODUCING DICHLORODIKETOPYRROLOPYRROLE PIGMENT COMPOSITION, DICHLORODIKETOPYRROLOPYRROLE PIGMENT COMPOSITION, COLORING COMPOSITION FOR COLOR FILTER, AND COLOR FILTER
PROBLEM TO BE SOLVED: To provide a method for producing a pigment composition comprising a dichlorodiketopyrrolopyrrole pigment excellent in fineness and with a crystalline form converted into an α type modification, which makes it possible to provide a coloring composition for a color filter, havin...
Gespeichert in:
Hauptverfasser: | , , |
---|---|
Format: | Patent |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a method for producing a pigment composition comprising a dichlorodiketopyrrolopyrrole pigment excellent in fineness and with a crystalline form converted into an α type modification, which makes it possible to provide a coloring composition for a color filter, having high brightness, high contrast ratio, and low viscosity.SOLUTION: Provided is a method for producing a dichlorodiketopyrrolopyrrole pigment composition, wherein, by kneading a crude dichlorodiketopyrrolopyrrole pigment having both an α type modification and a type modification, and at least one of a resin (B) and a resin type dispersant (C) by using a biaxial extruder type kneading apparatus, a type modification is converted into an α type modification. |
---|