Ink set

Patent metadata

Field	Value
Publication number	US-2025059394-A1
Application number	US-202218724561-A
Country	US
Kind code	A1
Filing date	Oct 17, 2022
Priority date	Jan 31, 2022
Publication date	Feb 20, 2025
Grant date	—

Abstract

An ink set contains a pretreatment solution and an ink composition, wherein the pretreatment solution contains an organic acid with a boiling point of 120° C. or lower at 1 atmospheric pressure, and the ink composition contains A to E below: (A) a white pigment; (B) an alkali-soluble resin being an acrylic-based copolymer resin with an acid value of 200 mgKOH/g or higher that also contains a monomer having carboxyl groups and a hydrophobic group-containing monomer as monomer components, amounting to a content of 1.0 to 3.0% by mass in the ink composition; (C) a water-dispersible resin with a glass transition temperature of −25° C. to 10° C.; (D) a silicone-based surfactant; (E) water. The ink set that can provide a printed matter (fabric) offering excellent abrasion resistance of the printed text and images, as well as good washing fastness and tackiness (non-sticking) of the printed face.

First claim

1 . An ink set comprising a pretreatment solution and an ink composition, wherein the pretreatment solution contains an organic acid with a boiling point of 120° C. or lower at 1 atmospheric pressure, and the ink composition contains A to E below:
A. a white pigment;
B. an alkali-soluble resin being an acrylic-based copolymer resin with an acid value of 200 mgKOH/g or higher that contains a monomer having carboxyl groups and a hydrophobic group-containing monomer as monomer components, amounting to a content of 1.0 to 3.0% by mass in the ink composition;
C. a water-dispersible resin with a glass transition temperature of −25° C. to 10° C.;
D. a silicone-based surfactant;
E. water.

2 . The ink set according to claim 1 , wherein a percentage of solids in the water-dispersible resin C in the ink composition is 10.0 to 30.0% by mass.

3 . The ink set according to claim 1 , adapted to inkjet printing.

4 . The ink set according to claim 1 , adapted to textile printing.

5 . The ink set according to claim 2 , adapted to inkjet printing.

6 . The ink set according to claim 2 , adapted to textile printing.

7 . The ink set according to claim 3 , adapted to textile printing.

8 . The ink set according to claim 5 , adapted to textile printing.

Assignees

• Sakata Inx Corp

Inventors

• Konishi Hiroyuki
• NODA Ryuta
• Murakami Masaki
• Hirakawa Satoshi
• Matsuhashi Yuka

Classifications

• D06P1/65118

  Compounds containing hydroxyl groups · CPC title

• D06P1/5292

  containing Si-atoms · CPC title

• D06P5/002

  Locally enhancing dye affinity of a textile material by chemical means · CPC title

• D06P1/5257

  (Meth)acrylic acid · CPC title

• D06P1/44

  using insoluble pigments or auxiliary substances, e.g. binders · CPC title