Title:
PIGMENT DISPERSING AGENT FOR INKJET PRINTING, AQUEOUS PIGMENT DISPERSION FOR INKJET PRINTING, AQUEOUS INK COMPOSITION FOR INK JET PRINTING, AND IMAGE FORMATION METHOD
Document Type and Number:
WIPO Patent Application WO/2020/059338
Kind Code:
A1
Abstract:
Provided are the following: a pigment dispersing agent for inkjet printing, which can provide a pigment dispersion and an ink composition having excellent storage stability, with this ink composition able to improve nozzle rest recovery in an inkjet recording method; an aqueous pigment dispersion for inkjet printing and an aqueous ink composition for ink jet printing which are obtained using this dispersing agent; and an image formation method in which this ink composition is used. This pigment dispersing agent for inkjet printing contains a polymer having a polyvinyl compound structure portion and a polyurethane structure portion. The total content of constituent components represented by formulae (1) and (2) in the polyvinyl compound structure portion is 30 mass% or less. The acid value of the polymer exceeds 80 mg KOH/g. In formulae (1) and (2), R1a and R1b each denote a hydrogen atom or an alkyl group having 1-4 carbon atoms. A1 denotes -O- or -NRA-. L1a and L1b each denote an alkyl group having 4 or more carbon atoms, or the like.
Inventors:
TAMAKUNI FUMIKO (JP)
KATAOKA SHOHEI (JP)
KATAOKA SHOHEI (JP)
Application Number:
PCT/JP2019/030841
Publication Date:
March 26, 2020
Filing Date:
August 06, 2019
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
B41J2/01; C09D11/326; B41M5/00; C08F12/06; C08F20/10; C08G18/62; C08G18/74; C09C1/36; C09C3/06; C09D11/322; C09D17/00
Domestic Patent References:
| WO2017132380A1 | 2017-08-03 | |||
| WO2015151725A1 | 2015-10-08 | |||
| WO1992022612A1 | 1992-12-23 |
Foreign References:
| JP2012046598A | 2012-03-08 | |||
| JP2011219650A | 2011-11-04 | |||
| JP2013194226A | 2013-09-30 | |||
| JP2007131753A | 2007-05-31 | |||
| JPH059405A | 1993-01-19 | |||
| JP2018131509A | 2018-08-23 |
Attorney, Agent or Firm:
NAKASHIMA Junko et al. (JP)
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