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1. WO2020137458 - WATER-BASED INK FOR INKJET PRINTING

Publication Number WO/2020/137458
Publication Date 02.07.2020
International Application No. PCT/JP2019/047922
International Filing Date 06.12.2019
IPC
C09D 11/322 2014.01
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 2006.01
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
2018-24372226.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) WATER-BASED INK FOR INKJET 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 pertains to: [1] a water-based ink for inkjet printing on a low-moisture-absorption printing medium, wherein the water-based ink contains a pigment, a polymer dispersant, a water-soluble organic solvent, and water, the water-soluble organic solvent includes a C3-4 alkanediol and a glycol ether having a higher boiling point than the alkanediol, the glycol ether comprises a C3-4 alkyl group and a diethylene glycol or triethylene glycol group, and the mass ratio (alkanediol/water-soluble organic solvent other than the alkanediol) is 1.4 or more; and [2] an inkjet printing method for printing on a low-moisture-absorption printing medium using the ink. This water-based ink for inkjet printing has exceptional discharge properties and exceptional bend characteristics (following properties) in relation to deformation of the low-moisture-absorption printing medium.
(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 alcanediol de 3 à 4 atomes de carbone, et un éther glycolique ayant un point d'ébullition supérieur à celui de l'alcanediol. Ledit éther glycolique est constitué d'un groupe alkyle de 3 à 4 atomes de carbone, et d'un groupe diéthylène glycol ou triéthylène glycol. Le rapport massique (alcanediol / solvant organique hydrosoluble autre que l'alcanediol) est supérieur ou égal à 1,4. [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. L'encre aqueuse pour impression à jet d'encre de l'invention se révèle excellente en termes de propriétés de décharge, et de caractéristiques de flexion (propriétés de suivi) vis-à-vis du support d'impression à faible absorption de liquide.
(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、炭素数3~4のアルカンジオールと、該アルカンジオールの沸点よりも高い沸点を有するグリコールエーテルを含み、該グリコールエーテルが、炭素数3~4のアルキル基とジエチレングリコール又はトリエチレングリコール基からなるものであり、質量比〔アルカンジオール/アルカンジオール以外の水溶性有機溶媒〕が1.4以上である、インクジェット印刷用水系インク、及び[2]前記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、吐出性に優れ、低吸液性印刷媒体の変形に対する曲げ特性(追従性)に優れている。
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