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1. WO2020137457 - WATER-BASED INKJET PRINTING INK

Publication Number WO/2020/137457
Publication Date 02.07.2020
International Application No. PCT/JP2019/047921
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
2018-24371926.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) WATER-BASED INKJET PRINTING INK
(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 inkjet printing ink for low-liquid-absorptive print media, the water-based inkjet printing ink comprising pigment-containing water-insoluble polymer particles A, pigment-free water-insoluble polymer particles B, a water-soluble organic solvent, and water, wherein the water-soluble organic solvent contains a C3-4 alkanediol and a glycol ether that has a boiling point that is equal to or lower than the boiling point of the alkanediol, and a water-insoluble polymer that constitutes the polymer particles B has a Tg of 0°C to 75°C; and [2] an inkjet printing method of printing on a low-liquid-absorptive print medium using the ink. The water-based inkjet printing ink according to the present invention exhibits an excellent fixing performance and an excellent ability to prevent color mixing.
(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 des particules de polymère (A) non solubles dans l'eau comprenant un pigment, des particules de polymère (B) non solubles dans l'eau ne comprenant pas de pigment, 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 égal ou inférieur à celui de l'alcanediol. Un polymère non soluble dans l'eau configurant les particules de polymère (B) présente une Tg comprise entre 0 et 75°C. [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 fixation et de propriétés de prévention de mélange de couleurs.
(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、顔料を含有する水不溶性ポリマー粒子A、顔料を含有しない水不溶性ポリマー粒子B、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と同一又は低い沸点を有するグリコールエーテルを含み、該ポリマー粒子Bを構成する水不溶性ポリマーのTgが0~75℃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、定着性、混色防止性に優れている。
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