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Patent Searching and Data


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 (1334 Minato, Wakayama-sh, Wakayama 80, 〒6408580, JP)
YAMAMOTO, Takako (2606 Akabane Ichikai-machi, Haga-gu, Tochigi 97, 〒3213497, JP)
MAEKAWA, Erika (1334 Minato, Wakayama-sh, Wakayama 80, 〒6408580, JP)
UEDA, Yasufumi (1334 Minato, Wakayama-sh, Wakayama 80, 〒6408580, JP)
Application Number:
JP2018/028310
Publication Date:
February 07, 2019
Filing Date:
July 27, 2018
Export Citation:
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Assignee:
KAO CORPORATION (14-10, Nihonbashi Kayabacho 1-chome Chuo-k, Tokyo 10, 〒1038210, JP)
International Classes:
C08L33/02; B41J2/01; B41M5/00; C08K5/3445; C08K5/3492; C08L53/00; C08L55/00; C09D11/326; C09D11/38
Attorney, Agent or Firm:
KATAOKA, Makoto et al. (OHTANI PATENT OFFICE, Toranomon ES Bldg. 7F. 25-2, Toranomon 3-chome, Minato-k, Tokyo 01, 〒1050001, JP)
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