Title:
PIGMENT DISPERSANT, PRODUCTION METHOD FOR PIGMENT DISPERSANT, AND PIGMENT DISPERSION LIQUID
Document Type and Number:
WIPO Patent Application WO/2014/091923
Kind Code:
A1
Abstract:
Provided are: a pigment dispersant that exhibits an effect when a small quantity thereof is added and that imparts a high degree of fine dispersibility, high stability, and high fluidity; a pigment dispersion liquid using the pigment dispersant; and technology that makes it possible to obtain a pigment dispersant in a manner that is environmentally friendly, that is easy to achieve, that is cost effective, and that achieves a superior degree of living radical polymerization. The pigment dispersant comprises, as a main component thereof, a polymer that: is formed by living radical polymerization in which two or more monomers including a methacrylate (A) having an acidic group or a basic group and a methacrylate macromonomer (B) that has a molecular weight of 500-5000 and a methacrylate residue on one end of a specific polymer chain thereof are used such that the ratio of the total mole number of methacrylate monomers among the raw material monomers is 20-50 moles to 1 mole of a polymerization initiator compound; is a graft copolymer comprising a main chain in which the (A) component-derived acidic groups or basic groups are bonded and a polymer chain that is derived from the (B) component; and comprises, by mass ratio, a proportion of 50-90 mass% of the polymer chain within the polymer.
Inventors:
SHIMANAKA HIROYUKI (JP)
MURAKAMI YOSHIKAZU (JP)
TAGI YOICHI (JP)
MURAKAMI YOSHIKAZU (JP)
TAGI YOICHI (JP)
Application Number:
PCT/JP2013/081797
Publication Date:
June 19, 2014
Filing Date:
November 26, 2013
Export Citation:
Assignee:
DAINICHISEIKA COLOR CHEM (JP)
International Classes:
C09B67/20; C08F290/06; C09B67/46; C09K23/16; C09K23/42; C09K23/52
Domestic Patent References:
| WO2010013651A1 | 2010-02-04 |
Foreign References:
| JP2011241259A | 2011-12-01 | |||
| JP2009024165A | 2009-02-05 | |||
| JP2009227839A | 2009-10-08 | |||
| JP2006273974A | 2006-10-12 | |||
| JP2010095591A | 2010-04-30 | |||
| JP2008298967A | 2008-12-11 | |||
| JP2007270089A | 2007-10-18 | |||
| JPH09176511A | 1997-07-08 | |||
| JP2011068865A | 2011-04-07 |
Other References:
See also references of EP 2933297A4
Attorney, Agent or Firm:
KONDO Rieko et al. (JP)
Kondo Toshihide child (JP)
Kondo Toshihide child (JP)
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