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1. JP2020105297 - AQUEOUS INK FOR INKJET PRINTING

Office
Japan
Application Number 2018243722
Application Date 26.12.2018
Publication Number 2020105297
Publication Date 09.07.2020
Publication Kind A
IPC
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
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
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 KAO CORP
花王株式会社
Inventors EGAWA GO
江川 剛
AKAGI RYUICHI
赤木 隆一
KOSAKE KATSUYUKI
小酒 克之
Agents 片岡 誠
佐々木 渉
Title
(EN) AQUEOUS INK FOR INKJET PRINTING
(JA) インクジェット印刷用水系インク
Abstract
(EN)

PROBLEM TO BE SOLVED: To provide an aqueous ink for inkjet printing that is excellent in dischargeability and excellent in flexural properties (followability) against deformation of a low-liquid absorbing printing medium and to provide an inkjet printing method using the aqueous ink.

SOLUTION: [1] The aqueous ink for inkjet printing is an aqueous ink for inkjet printing on a low-liquid absorbing printing medium and contains a pigment, a polymer dispersant, a water-soluble organic solvent and water in which the water-soluble organic solvent includes a 3-4C alkanediol and a glycol ether having a boiling point equal to or higher than the boiling point of the alkanediol; the glycol ether comprises a 3-4C alkyl group and a diethylene glycol or triethylene glycol group: and the mass ratio [the alkanediol/the water-soluble organic solvent other than the alkanediol] is 1.4 or more, and [2] the inkjet printing method comprises printing on a low-liquid absorbing printing medium by using the ink.

SELECTED DRAWING: None

COPYRIGHT: (C)2020,JPO&INPIT

(JA)

【課題】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)に優れたインクジェット印刷用水系インク、及びそれを用いるインクジェット印刷方法を提供する。
【解決手段】[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である。
【選択図】なし

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