Title:
COLORED PARTICLE DISPERSION
Document Type and Number:
WIPO Patent Application WO/2017/033942
Kind Code:
A1
Abstract:
(1) A colored particle dispersion containing colored particles and a neutralizing agent, wherein the colored particles are formed by performing, in the presence of a pigment, emulsion polymerization of a monomer mixture that includes a polymerizable monomer having an acid group, the neutralizing agent includes a water soluble amine compound, and the pH of the colored particle dispersion is 6-11. (2) A method for producing the colored particle dispersion containing colored particles and a neutralizing agent, said method having: step 1, in which a colored particle dispersion p is obtained by emulsion polymerizing, in the presence of a pigment, a monomer mixture that includes a polymerizable monomer having an acid group; step 2, in which a colored particle dispersion having a pH of 6-11 is obtained by mixing the colored particle dispersion p with a neutralizing agent that includes a water soluble amine compound. By using this colored particle dispersion in a water-based ink, it is possible to obtain printed matter that maintains superior preservation stability, exhibits superior discharge stability when the water content of the system has evaporated, and exhibits superior resistance to alcohol even when printed on a recording medium having low water absorbance.
Inventors:
MATSUMOTO YUUTA (JP)
Application Number:
PCT/JP2016/074561
Publication Date:
March 02, 2017
Filing Date:
August 23, 2016
Export Citation:
Assignee:
KAO CORP (JP)
International Classes:
C09D17/00; B41J2/01; B41M5/00; C09B67/46; C09D11/322
Domestic Patent References:
| WO2003033602A1 | 2003-04-24 | |||
| WO2001094482A1 | 2001-12-13 | |||
| WO2015093275A1 | 2015-06-25 |
Foreign References:
| JP2005097518A | 2005-04-14 | |||
| JP2003306611A | 2003-10-31 | |||
| JP2003327872A | 2003-11-19 |
Other References:
See also references of EP 3342833A4
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (JP)
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