Title:
PRODUCTION METHOD FOR FINE ORGANIC PIGMENT
Document Type and Number:
WIPO Patent Application WO/2014/185471
Kind Code:
A1
Abstract:
The present invention provides: a method 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. Provided are: a production method [1] for a fine organic pigment, said production method including a step (1) in which an organic pigment starting material, a water-soluble inorganic salt, a water-soluble organic solvent, and at least 0.6 but not more than 4.0 parts by mass of water per 100 parts by mass of the water-soluble inorganic salt are mixed, and the resultant mixture is kneaded; a fine organic pigment [2] obtained using the abovementioned method [1]; and a dispersion [3] produced using the abovementioned fine organic pigment [2]. Also provided are: a production method [4] for a fine-organic-pigment paste, said production method being provided with a step (2) in which the mixture kneaded in the abovementioned step (1) is cleaned; a production method [5] for a dispersion, said production method being provided with a step (3) in which an organic solvent, water, and the fine-organic-pigment paste obtained using the abovementioned production method [4] are subjected to dispersion treatment; and a production method [6] for an ink, said production method being provided with a step (4) in which at least one selected from water and an organic solvent is mixed with the dispersion obtained using the abovementioned production method [5].
Inventors:
SATO TAKAHIRO (JP)
FUKUROI HIRONOBU (JP)
TAKENO HIROTAKA (JP)
FUKUROI HIRONOBU (JP)
TAKENO HIROTAKA (JP)
Application Number:
PCT/JP2014/062886
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:
| JP2009221376A | 2009-10-01 | |||
| JPS63248864A | 1988-10-17 | |||
| JP2012025920A | 2012-02-09 | |||
| JP2012025920A | 2012-02-09 |
Other References:
See also references of EP 2998364A4
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (JP)
Tamotsu Otani (JP)
Tamotsu Otani (JP)
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