Title:
PROCESS FOR PRODUCING AQUEOUS DISPERSION OF CARBON BLACK
Document Type and Number:
WIPO Patent Application WO/2006/126437
Kind Code:
A1
Abstract:
A process for producing an aqueous dispersion of carbon black that excels in water dispersibility and ink performance, being suitable for use in water-based black inks, such as those for inkjet printers. There is provided a first process for producing an aqueous dispersion of carbon black, characterized by sequentially conducting treating of carbon black with a surface chemical modifier in an aqueous medium, neutralizing of acid groups lying on the surface of the carbon black resulting from the chemical modification, atomizing of the carbon black and purification processing. Further, there is provided a second process, characterized by sequentially conducting treating of carbon black with a surface chemical modifier in an aqueous medium, neutralizing of acid groups lying on the surface of the carbon black resulting from the chemical modification, purification processing and atomizing of the carbon black.
Inventors:
NAKATA HIDENAO (JP)
ARAI HIRONORI (JP)
ARAI HIRONORI (JP)
Application Number:
PCT/JP2006/309872
Publication Date:
November 30, 2006
Filing Date:
May 11, 2006
Export Citation:
Assignee:
TOKAI CARBON KK (JP)
NAKATA HIDENAO (JP)
ARAI HIRONORI (JP)
NAKATA HIDENAO (JP)
ARAI HIRONORI (JP)
International Classes:
C09C3/06; C09C1/48; C09C3/08; C09D11/00; C09D17/00
Foreign References:
| JPH10120958A | 1998-05-12 | |||
| JPH09286938A | 1997-11-04 | |||
| JP2003064279A | 2003-03-05 | |||
| JP2004107513A | 2004-04-08 | |||
| JP2003183541A | 2003-07-03 | |||
| JP2003183540A | 2003-07-03 | |||
| JP2003183539A | 2003-07-03 |
Other References:
See also references of EP 1889883A4
Attorney, Agent or Firm:
Fukuda, Yasuo (1-16 Kanda Suda-cho, Chiyoda-k, Tokyo 41, JP)
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