Title:
カーボンブラック水性分散体とその製造方法
Document Type and Number:
Japanese Patent JP4692740
Kind Code:
B2
Abstract:
A carbon black aqueous dispersion which has excellent dispersibility in an aqueous medium and is suitable as an aqueous black ink such as an inkjet printer ink, and a method of producing the same. The carbon black aqueous dispersion includes an aqueous medium and a carbon black pigment dispersed in the aqueous medium, wherein some or all of hydrogen atoms of acidic groups produced by liquid-phase oxidation of the carbon black are replaced with a basic amino acid salt group by neutralization with a basic amino acid. The method of producing a carbon black aqueous dispersion includes subjecting carbon black to liquid-phase oxidation, removing reduced salts from the resulting slurry, neutralizing the slurry with a basic amino acid to replace some or all of hydrogen atoms of acidic groups with a basic amino acid salt group to form a basic amino acid salt compound, and purifying the resulting product.
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Inventors:
Shigemi Toda
Sekiyama Nei
Sekiyama Nei
Application Number:
JP2005184199A
Publication Date:
June 01, 2011
Filing Date:
June 24, 2005
Export Citation:
Assignee:
Tokai Carbon Co., Ltd.
International Classes:
C09C1/56; C09C3/00; C09D17/00
Domestic Patent References:
| JP10510862A | ||||
| JP2005132985A | ||||
| JP2004107513A | ||||
| JP2003183539A | ||||
| JP2003183540A | ||||
| JP2003183541A | ||||
| JP9286938A | ||||
| JP10120958A | ||||
| JP2005113091A | ||||
| JP4818186A | ||||
| JP57159856A | ||||
| JP4189877A | ||||
| JP83498A | ||||
| JP8319444A | ||||
| JP11148027A |
Attorney, Agent or Firm:
Yasuo Fukuda
Kenji Akatsuka
Kenji Akatsuka