Title:
NON-AQUEOUS PIGMENT INK
Document Type and Number:
WIPO Patent Application WO/2013/099157
Kind Code:
A1
Abstract:
[Problem] To produce a non-aqueous pigment ink that is capable of saving electricity, exhibits low-temperature suitability and storage stability, suppresses ink strikethrough, and achieves high printing concentration. [Solution] A comb-structure acrylic polymer in which a non-aqueous solvent contains a non-polar hydrocarbon solvent in an amount greater than or equal to 50 mass% of the solvent overall, and the non-aqueous solvent has a (meth)acrylate in the principal chain thereof, and a C8-18 alkyl group and a urethane group configuring the side chains thereof, wherein: this acrylic polymer contains an alkyl (meth)acrylate (A) having a C8-18 alkyl group, a reactive (meth)acrylate (B) having a functional group capable of reacting with an amino group, and a monomer (C) having a β-diketone group or a β-keto-acid ester group; a urethane group is introduced into a copolymer of the monomer mixture by a reaction between the functional group capable of reacting with an amino group, an amino alcohol, and a polyvalent isocyanate compound; and the mass ratio of the copolymer part to the urethane-group part is 80:20-99:1.
Inventors:
HOSOYA TETSUO (JP)
ENDO TOSHIHIRO (JP)
KON SYOTARO (JP)
ENDO TOSHIHIRO (JP)
KON SYOTARO (JP)
Application Number:
PCT/JP2012/008110
Publication Date:
July 04, 2013
Filing Date:
December 19, 2012
Export Citation:
Assignee:
RISO KAGAKU CORP (JP)
International Classes:
B41J2/01; B41M5/00; C09D11/00; C09D11/322; C09D11/324; C09D11/36; C09K23/00
Foreign References:
| JP2010001452A | 2010-01-07 | |||
| JP2011127091A | 2011-06-30 | |||
| JP2012046595A | 2012-03-08 | |||
| JP2010001452A | 2010-01-07 |
Other References:
See also references of EP 2799501A4
Attorney, Agent or Firm:
YANAGIDA, Masashi et al. (JP)
Seiji Yanagida (JP)
Seiji Yanagida (JP)
Download PDF:
Claims: