AQUEOUS PIGMENT DISPERSION AND APPLICATIONS THEREOF

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United States of America Patent

APP PUB NO 20110223529A1
SERIAL NO

12737568

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Abstract

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Disclosed are an aqueous pigment dispersion containing at least a pigment, water, a high-molecular dispersant, and an alkali. The high-molecular dispersant is a diblock polymer having a formula (1) of A-B or a triblock polymer having a formula (2) of A-B-C. The diblock or triblock polymer is a diblock or triblock polymer obtained by polymerizing addition-polymerizable monomers with a radical generator while using an organic iodide as a polymerization initiating compound and an organic phosphorus compound, organic nitrogen compound or organic oxygen compound as a catalyst. Also disclosed are a production method and use of the aqueous pigment dispersion. With the high-molecular dispersant obtained by a simple living radical polymerization process free of the problems of conventional living radical polymerization and having a precisely-controlled molecular structure, the aqueous pigment dispersion can be obtained with the pigment dispersed in it.

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Patent Owner(s)

Patent OwnerAddress
DAINICHISEIKA COLOR & CHEMICALS MFG CO LTDCHUO-KU TOKYO 103-8383
KYOTO UNIVERSITY36-1 YOSHIDA-HONMACHI SAKYO-KU KYOTO-SHI KYOTO 606-8501

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aoyagi, Taiyo Tokyo, JP 6 65
Fukuda, Takeshi Kyoto, JP 265 2982
Goto, Atsushi Kyoto, JP 128 1215
Murakami, Yoshikazu Tokyo, JP 68 572
Sakai, Naoyuki Tokyo, JP 25 228
Shimanaka, Hiroyuki Tokyo, JP 39 196
Tsujii, Yoshinobu Kyoto, JP 42 190
Yoshikawa, Sachio Tokyo, JP 17 65

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