Textile printing ink set and textile printing method

Patent metadata

Field	Value
Publication number	US-2022169881-A1
Application number	US-202217673733-A
Country	US
Kind code	A1
Filing date	Feb 16, 2022
Priority date	Sep 30, 2019
Publication date	Jun 2, 2022
Grant date	—

Abstract

Provided are a textile printing ink set including a pretreatment liquid including a cationic compound having a molecular weight per cationic valence of 150 to 220, and an ink composition including a water-insoluble dye, a dispersing agent, and water, wherein the dispersing agent is at least one selected from the group consisting of a urethane resin, a urea resin, and a urethane-urea resin; and a textile printing method.

First claim

What is claimed is:

1 . A textile printing ink set comprising:
a pretreatment liquid comprising a cationic compound having a molecular weight per cationic valence of 150 to 220; and an ink composition comprising a water-insoluble dye, a dispersing agent, and water, wherein the dispersing agent is at least one selected from the group consisting of a urethane resin, a urea resin, and a urethane-urea resin, and the water-insoluble dye is C.I. Solvent Black 3.

2 . The textile printing ink set according to claim 1 , wherein the dispersing agent has an acid value of 15 mgKOH/g to 90 mgKOH/g.

3 . The textile printing ink set according to claim 1 , wherein the cationic compound is at least one selected from the group consisting of a condensation product between dicyandiamide and alkylamine, a condensation product between dicyandiamide and formaldehyde, a polymer comprising, as a monomeric unit, diallyldimethylammonium chloride, and a polymer comprising, as a monomeric unit, methyldiallylamine acetic acid salt.

4 . The textile printing ink set according to claim 1 , wherein the cationic compound has a weight-average molecular weight of 10,000 to 200,000.

5 . The textile printing ink set according to claim 1 , wherein a ratio of a weight-average molecular weight of the cationic compound to a weight-average molecular weight of the dispersing agent is 1.5 to 15.

6 . The textile printing ink set according to claim 1 , wherein the pretreatment liquid further comprises a solvent having a boiling point of 240° C. or more, and
a content of the solvent relative to a total amount of the pretreatment liquid is 14 mass % to 50 mass %.

7 . The textile printing ink set according to claim 1 , wherein the pretreatment liquid further comprises a surfactant.

8 . The textile printing ink set according to claim 1 , wherein the water-insoluble dye is at least one dye selected from the group consisting of an oil-soluble dye, a disperse dye, and a vat dye.

9 . A textile printing method comprising:
applying the pretreatment liquid comprised in the ink set according to claim 1 , to a textile; and applying the ink composition comprised in the ink set according to claim 1 , to the textile to which the pretreatment liquid has been applied.

10 . The textile printing method according to claim 9 , wherein, in the applying of the pretreatment liquid, the pretreatment liquid is applied by an ink jet recording process.

11 . The textile printing method according to claim 9 , wherein, in the applying of the ink composition, the ink composition is applied by an ink jet recording process.

12 . The textile printing method according to claim 9 , wherein the textile comprises cellulose fiber.

Assignees

• Fujifilm Corp

Inventors

• Ikoshi Masao
• Nakano Ryoichi
• Suzuki Shota

Classifications

• D06P5/30

  Ink jet printing · CPC title

• D06P3/6033

  using dispersed dyes · CPC title

• D06P3/6025

  using vat or sulfur dyes · CPC title

• D06P3/60

  Natural or regenerated cellulose · CPC title

• D06P1/56

  Condensation products or precondensation products prepared with aldehydes · CPC title