Pigment
AssigneeDainichiseika Color & Chemicals Mfg. Co., Ltd.
InventorsNaoki Hirata, Hisao Okamoto, Yoshiyuki Zama, Michiei Nakamura, Tetsuya Yanagimoto, Hiroaki Yamada, Masahiro Tsuchiya
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AssigneeDainichiseika Color & Chemicals Mfg. Co., Ltd.
InventorsNaoki Hirata, Hisao Okamoto, Yoshiyuki Zama, Michiei Nakamura, Tetsuya Yanagimoto, Hiroaki Yamada, Masahiro Tsuchiya
Estimating the term…
This present invention can provide a novel pigment useful in color image displays to form blue pixels capable of providing high-level brightness and saturation, especially a finely-divided pigment which has bright hue and is excellent in pigment physical properties such as light fastness, solvent resistance and heat resistance, and a process for producing the same, a pigment dispersion making use of the pigment, and an ink for a color filters. The novel pigment is produced by forming into a pigment a subphthalocyanine represented by the following formula (1): wherein X is a halogen atom, presents diffraction peaks at diffraction angles (2θ) 7.0°, 12.3°, 20.4° and 23.4° in x-ray diffraction, and has an average particle size of 120 to 20 nm.
A subphthalocyanine pigment which is represented by the following formula (1):
Dependencies are inferred from the claim text.