Title:
POLYMER EMULSION
Document Type and Number:
WIPO Patent Application WO/2019/026805
Kind Code:
A1
Abstract:
The present invention pertains to a polymer emulsion capable of exhibiting scratch resistance even when a coating film is formed or when recording is performed on a recording medium having low liquid absorption, and a water-based ink for inkjet recording having exceptional ejection stability and bleed resistance during inkjet recording. [1] A polymer emulsion containing a polymer and water, wherein the polymer is a random copolymer or a block copolymer containing (a) structural units derived from one or more monomers selected from acrylic acid and methacrylic acid and (b) structural units derived from a hydrophobic vinyl monomer, the polymer moreover is a carboxy-group-containing polymer having an acid value of 150-300 mg KOH/g, and the polymer emulsion includes a compound that releases formaldehyde. [2] A water-based ink for inkjet recording, the water-based ink containing a pigment, the polymer, a water-soluble organic solvent, and water, wherein the water-soluble organic solvent includes one or more compounds selected from polyhydric alcohols and polyhydric alcohol alkyl ethers, the total amount of polyhydric alcohols and polyhydric alcohol alkyl ethers is 18% by mass or greater in the ink, and the water-based ink for inkjet recording includes a compound that releases formaldehyde.
Inventors:
SUZUKI TAKAYUKI (JP)
YAMAMOTO TAKAKO (JP)
MAEKAWA ERIKA (JP)
UEDA YASUFUMI (JP)
YAMAMOTO TAKAKO (JP)
MAEKAWA ERIKA (JP)
UEDA YASUFUMI (JP)
Application Number:
PCT/JP2018/028310
Publication Date:
February 07, 2019
Filing Date:
July 27, 2018
Export Citation:
Assignee:
KAO CORP (JP)
International Classes:
C08L33/02; B41J2/01; B41M5/00; C08K5/3445; C08K5/3492; C08L53/00; C08L55/00; C09D11/326; C09D11/38
Domestic Patent References:
| WO2014050594A1 | 2014-04-03 | |||
| WO2015152291A1 | 2015-10-08 | |||
| WO2014156758A1 | 2014-10-02 |
Foreign References:
| JP2003313430A | 2003-11-06 | |||
| JP2017088658A | 2017-05-25 | |||
| JPH10310729A | 1998-11-24 | |||
| JP2001247796A | 2001-09-11 | |||
| JP2002536487A | 2002-10-29 | |||
| JP2006524269A | 2006-10-26 | |||
| JP2006176624A | 2006-07-06 | |||
| JP2009535486A | 2009-10-01 | |||
| US20030128246A1 | 2003-07-10 |
Other References:
See also references of EP 3663353A4
Attorney, Agent or Firm:
KATAOKA, Makoto et al. (JP)
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