Kubovcik & Kubovcik
Pigment
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.
Dainichiseika Color & Chemicals Mfg. Co., Ltd.
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C09B C09D C09B C09B C09D C09B C09D C09D
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Hiroaki Michiei Tetsuya Masahiro Hisao Naoki Yoshiyuki
Yamada Nakamura Yanagimoto Tsuchiya Okamoto Hirata Zama