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1. WO2020137462 - AQUEOUS INK FOR INKJET PRINTING

Publication Number WO/2020/137462
Publication Date 02.07.2020
International Application No. PCT/JP2019/047926
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
B41M 5/50 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
50Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
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
B41M 5/50
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
50Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
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
2018-24372826.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) AQUEOUS 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 relates to: [1] an aqueous ink for inkjet printing on a low-liquid-absorbent printing medium, the aqueous ink for inkjet printing containing a pigment, a polymer dispersing agent, a water-soluble organic solvent, and water, the water-soluble organic solvent including one or more solvents (S1) selected from propylene glycol monomethyl ether and propylene glycol monopropyl ether, and one or more solvents (S2) selected from 1,4-butanediol, 1,6-hexanediol, dipropylene glycol, and 2-pyrrolidone, the content of the water-soluble organic solvent in the ink being 20-45% by mass, and the content of the solvent (S1) in the water-soluble organic solvent being 78-95% by mass; and [2] an inkjet printing method for printing on a low-liquid-absorbent printing medium using said ink. Through this aqueous ink for inkjet printing, printed matter having excellent substrate adhesion can be obtained while maintaining image density.
(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 au moins une sorte de solvant (S1) choisie parmi un éther monométhylique de propylène glycol et un éther monopropylique de propylène glycol, et au moins une sorte de solvant (S2) choisie parmi un 1,4-butanediol, un hexanediol-1,6, un dipropylèneglycol et une 2-pyrrolidone. La teneur en solvant organique hydrosoluble dans l'encre est comprise entre 20 et 45% en masse. Enfin, la teneur en solvant (S1) dans ledit solvant organique hydrosoluble est comprise entre 78 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. L'encre aqueuse pour impression à jet d'encre de l'invention permet d'obtenir un imprimé qui tout en préservant une densité d'image, présente une excellente adhérence sur un substrat.
(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、プロピレングリコールモノメチルエーテル及びプロピレングリコールモノプロピルエーテルから選ばれる1種以上の溶媒(S1)と、1,4-ブタンジオール、1,6-ヘキサンジオール、ジプロピレングリコール、及び2-ピロリドンから選ばれる1種以上の溶媒(S2)と、を含み、該インク中の該水溶性有機溶媒の含有量が20~45質量%であり、該水溶性有機溶媒中の溶媒(S1)の含有量が78~95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によれば、画像濃度を維持しつつ、基材密着性に優れた印刷物を得ることができる。
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