Aqueous inkjet yellow ink, ink set, and method for producing printed matter

A technology of water-based inkjet and yellow ink, which is applied in the direction of copying/marking methods, chemical instruments and methods, printing, etc., can solve the problems of poor weather resistance and water resistance, and achieve excellent dispersion stability, color reproducibility and light fastness. , Excellent storage stability

Pending Publication Date: 2021-07-30
TOYO INK SC HOLD CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, water-based inks using water-based dyes have disadvantages such as poor weather resistance and water resistance. Therefore, in recent years, studies have been conducted on inks using pigments instead of the aforementioned water-based dyes.

Method used

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  • Aqueous inkjet yellow ink, ink set, and method for producing printed matter
  • Aqueous inkjet yellow ink, ink set, and method for producing printed matter
  • Aqueous inkjet yellow ink, ink set, and method for producing printed matter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0281] Hereinafter, the present invention will be described in more detail by way of examples and comparative examples. In addition, in the following description, unless otherwise specified, "part", "%" and "ratio" are a mass basis.

[0282] The yellow pigments used in the examples are as follows.

[0283] ·SYMULER FAST YELLOW GFCONC

[0284] (C.I. Pigment Yellow 12, manufactured by DIC Corporation)

[0285] ■SYMULER FAST YELLOW 4090G

[0286] (C.I. Pigment Yellow 14, manufactured by DIC Corporation)

[0287] ■HANSA YELLOW (Hansa yellow) 5GX01

[0288] (C.I. Pigment Yellow 74, manufactured by Clariant Corporation)

[0289] ■Irgazin Yellow (Irgazin Yellow) L 1030

[0290] (C.I. Pigment Yellow 109, manufactured by BASF Corporation)

[0291] ■Irgazin Yellow D 1999

[0292] (C.I. Pigment Yellow 110, manufactured by BASF Corporation)

[0293] ■Paliotol Yellow D 0960

[0294] (C.I. Pigment Yellow 138, manufactured by BASF Corporation)

[0295] ■Paliotol Yellow D 1819

[02...

manufacture example

[0311] Put 20 parts of SYMULER FAST YELLOW GFCONC, 36 parts of varnish of pigment dispersion resin 1, and 44 parts of water into a mixing container equipped with a mixer. A bead mill (Dyno-mill) of L was used for main dispersion for 2 hours to obtain a yellow pigment dispersion 1 . In addition, the ratio of the pigment and the pigment dispersion resin 1 (non-volatile matter) was pigment / pigment dispersion resin 1 (non-volatile matter)=100 / 36.

[0312]

[0313] Yellow pigment dispersions 2-11 were produced by the method similar to yellow pigment dispersion 1 except having changed the kind of pigment into the kind shown in Table 1, respectively. In addition, Table 1 also describes the impurity content in the pigment measured by the method described above.

[0314] [Table 1]

[0315] Table 1

[0316]

[0317]

[0318] In a mixing container equipped with a stirrer, put 45 parts of polyethylene wax (melting point about 115°C), 45 parts of acid group-containing polyolefin ...

Embodiment 1～7、 comparative example 1～6

[0323]

[0324] In a mixing container equipped with a stirrer, the yellow pigment dispersion prepared above and the binder resin (resin microparticles JE-1056 (solid content 42.5% by Starlight PMC Co., Ltd.) , particle size 50nm)), solvent, surfactant (Surfynol 104E which is an acetylene glycol-based compound manufactured by Nissin Chemical Industry Formula), basic organic compound (B) (diethanolamine (pKa=8.9)) and water, Mix for 1 hour. Next, filtration was performed with a membrane filter having a pore diameter of 1 μm to remove coarse particles, whereby aqueous yellow inks 1 to 13 were obtained. In the examples, the content of JE-1056 shown in the table is the content of solid content.

[0325] [Table 2]

[0326] Table 2

[0327]

[0328] In addition, in Table 2, the pigment described with * corresponds to a yellow pigment (A). In addition, in Table 2, the results of Evaluations 1 to 5 described below are also described together.

[0329]

[0330] Using the wat...

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Abstract

One embodiment of the present invention pertains to an aqueous inkjet yellow ink including a yellow pigment (A) having a specific partial structure, an organic solvent, a basic organic compound, and water, wherein: the yellow pigment (A) content is 1-10 mass% in the total amount of the aqueous inkjet yellow ink; the basic organic compound includes 0.1-1.25 mass% of a basic organic compound (B) having a pKa value at 25 DEG C of 9.5 or lower in the total amount of the aqueous inkjet yellow ink; and the organic solvent content is 5 mass% or less in the total amount of the aqueous inkjet yellow ink, the organic solvent having a boiling point at 1 atm of 240 DEG C or higher.

Description

technical field [0001] The present invention relates to a water-based inkjet yellow ink, an ink set comprising the aforementioned yellow ink, and a method for producing a printed matter. Background technique [0002] The so-called inkjet printing method is a method of forming images and / or characters on the recording medium by flying tiny droplets of ink from the inkjet head and landing on the recording medium. It is characterized in that it does not require a printing plate. Compared with the electrophotographic method, which is another printing method that does not require a printing plate, the inkjet printing method is superior in terms of the price of the device itself, running costs during printing, device size, and high-speed printing characteristics. Inkjet printing is expected to grow in the future as digital printing becomes more popular and uses expand. [0003] As the ink used in the inkjet printing method, there are various types such as oil-based, solvent-based...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B19/02C09B29/20C09B47/04B41J2/01C09D11/322C09D11/40B41M5/00C09B11/12C09B57/04
CPCC09D11/322C09D11/40C09D11/38B41M5/0023C09B29/20C09B57/04C09D11/033C09D11/037C09D11/107
Inventor 依田纯城内一博铃木纪雄
Owner TOYO INK SC HOLD CO LTD
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