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1. WO2020137463 - WATER-BASED INK FOR INK-JET PRINTING

Publication Number WO/2020/137463
Publication Date 02.07.2020
International Application No. PCT/JP2019/047927
International Filing Date 06.12.2019
IPC
C09D 11/322 2014.1
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
11Inks
30Inkjet printing inks
32characterised by colouring agents
322Pigment inks
B41M 5/00 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
5Duplicating or marking methods; Sheet materials for use therein
CPC
B41M 5/00
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING,
5Duplicating or marking methods; Sheet materials for use therein
C09D 11/322
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
11Inks
30Inkjet printing inks
32characterised by colouring agents
322Pigment inks
Applicants
  • 花王株式会社 KAO CORPORATION [JP]/[JP]
Inventors
  • 江川 剛 EGAWA, Tsuyoshi
  • 赤木 隆一 AKAGI, Ryuichi
  • 小酒 克之 KOZAKE, Katsuyuki
Agents
  • 特許業務法人大谷特許事務所 OHTANI PATENT OFFICE
Priority Data
2018-24372926.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) WATER-BASED INK FOR INK-JET PRINTING
(FR) ENCRE AQUEUSE POUR IMPRESSION À JET D'ENCRE
(JA) インクジェット印刷用水系インク
Abstract
(EN)
The present invention relates to [1] a water-based ink for ink-jet printing on lowly liquid-absorbing print media which comprises a pigment, a polymeric dispersant, a water-soluble organic solvent, and water, wherein the water-soluble organic solvent comprises triethylene glycol monobutyl ether (S1) and at least one solvent (S2) selected from among alkanediols having 4-6 carbon atoms, 1,3-propanediol, and cyclic amide compounds, the content of solvent (S1) in the water-soluble organic solvent being 55-95 mass%, and [2] an ink-jet printing method which comprises using the ink [1] to conduct printing on a lowly liquid-absorbing print medium. The water-based ink for ink-jet printing of the present invention has excellent delivery stability and can give printed matter having excellent image clearness.
(FR)
[1] L'invention concerne une encre aqueuse pour impression à jet d'encre qui est destinée à un support d'impression à faible absorption de liquide, et qui comprend un pigment, un dispersant polymère, un solvant organique hydrosoluble et une eau. Ledit solvant organique hydrosoluble contient un éther monobuthylique de triéthylène glycol (S1), et au moins une sorte de solvant (S2) choisie parmi un alcanediol de 4 à 6 atomes de carbone, un 1,3-propanediol et un composé amide cyclique. La teneur en solvant (S1) dans ledit solvant organique hydrosoluble est comprise entre 55 et 95% en masse. [2] L'invention concerne également un procédé d'impression à jet d'encre destiné à imprimer sur un support d'impression à faible absorption de liquide à l'aide de ladite encre décrite en [1]. L'encre aqueuse pour impression à jet d'encre de l'invention permet d'obtenir un imprimé d'une excellente stabilité de décharge et d'une excellente clarté d'image.
(JA)
[1]低吸液性印刷媒体へのインクジェット印刷用水系インクであって、顔料、ポリマー分散剤、水溶性有機溶媒、及び水を含有し、該水溶性有機溶媒が、トリエチレングリコールモノブチルエーテル(S1)と、炭素数4~6のアルカンジオール、1,3-プロパンジオール、及び環状アミド化合物から選ばれる1種以上の溶媒(S2)とを含み、該水溶性有機溶媒中の溶媒(S1)の含有量が55~95質量%である、インクジェット印刷用水系インク、及び[2]前記[1]に記載のインクを用いて低吸液性印刷媒体に印刷するインクジェット印刷方法に関する。本発明のインクジェット印刷用水系インクは吐出安定性に優れ、画像鮮明性に優れた印刷物を得ることができる。
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