Title:
PRODUCTION METHOD FOR FINE ORGANIC PIGMENT
Document Type and Number:
WIPO Patent Application WO/2014/185473
Kind Code:
A1
Abstract:
The present invention provides: a method [1] for producing a fine organic pigment having an extremely small primary particle size; a fine organic pigment obtained using this method; a production method for a dispersion in which the fine organic pigment is used; a dispersion obtained using this method; and a production method for an ink in which the dispersion is used. This production method [1] for a fine organic pigment includes a step (1) in which (A) an organic pigment starting material having, in molecules thereof, oxygen, and nitrogen bonded to hydrogen, (B) a water-soluble inorganic salt, (C) a water-soluble organic solvent, (D) at least 0.6 but not more than 7.0 parts by mass of water per 100 parts by mass of the water-soluble inorganic salt, and (E) at least 1.5 but not more than 35 parts by mass of a water-soluble basic compound per 100 parts by mass of the organic pigment starting material are mixed, and the resultant mixture is kneaded.
Inventors:
SATO TAKAHIRO (JP)
TAKENO HIROTAKA (JP)
FUKUROI HIRONOBU (JP)
TAKENO HIROTAKA (JP)
FUKUROI HIRONOBU (JP)
Application Number:
PCT/JP2014/062888
Publication Date:
November 20, 2014
Filing Date:
May 14, 2014
Export Citation:
Assignee:
KAO CORP (JP)
International Classes:
C09B67/02; C09B67/04; C09B67/20; C09B67/46; C09D11/00; C09D17/00
Foreign References:
| JP2012025920A | 2012-02-09 | |||
| JP2009221376A | 2009-10-01 | |||
| JP2010106260A | 2010-05-13 | |||
| JPS63248864A | 1988-10-17 | |||
| JP2011252123A | 2011-12-15 | |||
| JP2012025920A | 2012-02-09 |
Other References:
See also references of EP 2998365A4
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (JP)
Tamotsu Otani (JP)
Tamotsu Otani (JP)
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