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Aqueous emulsion solution, coloring agent composition containing said aqueous solution, aqueous inkjet ink, and method for producing aqueous emulsion solution

A manufacturing method and aqueous solution technology, applied in ink, coating, organic dyes, etc., can solve the problems of inability to achieve resolubility, insolubility, poor redispersibility, etc., and achieve excellent inkjet printing adaptability and simple yield , Improve the effect of storage stability

Active Publication Date: 2015-12-09
DAINICHISEIKA COLOR & CHEM MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polymer itself of these polymer emulsions has a high molecular weight, which improves the adhesion to the base material. Therefore, when drying to form a film, it may not dissolve in an aqueous medium and have poor redispersibility. There is a problem that ink resolvability, which is important for inkjet inks, cannot be achieved (refer to Patent Documents 1-3)

Method used

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  • Aqueous emulsion solution, coloring agent composition containing said aqueous solution, aqueous inkjet ink, and method for producing aqueous emulsion solution
  • Aqueous emulsion solution, coloring agent composition containing said aqueous solution, aqueous inkjet ink, and method for producing aqueous emulsion solution
  • Aqueous emulsion solution, coloring agent composition containing said aqueous solution, aqueous inkjet ink, and method for producing aqueous emulsion solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0135] [Example 1] Synthesis of polymer I-1 and emulsion (Em-1) using it

[0136] [Synthesis of Polymer I-1]

[0137] First, add the following substances to a reaction device of a 2-liter detachable flask equipped with a stirrer, a countercurrent condenser, a thermometer, and a nitrogen gas introduction tube, and proceed as follows to synthesize A-B used to constitute the polymer I specified in the present invention. A polymer block of the block copolymer. Specifically, 828.4 parts of diethylene glycol monobutyl ether (hereinafter abbreviated as BDG) as an organic solvent, 3.8 parts of iodine for obtaining iodide as a polymerization initiating compound, and 2,2'- 14.0 parts of azobis(4-methoxy-2,4-dimethylvaleronitrile) (hereinafter abbreviated as V-70), 0.22 parts of N-iodosuccinimide as a catalyst, and benzyl methacrylate 213.9 parts of ester (hereinafter abbreviated as BzMA) and 19.8 parts of 2-hydroxyethyl methacrylate (hereinafter abbreviated as HEMA) were stirred and h...

Embodiment 2～5

[0148] [Examples 2 to 5] Emulsions using polymer I-1 (Em-2 to Em-5)

[0149] With the respective polymer compositions, compounding amounts, etc., the same operations as in the aforementioned Example 1 were carried out to obtain aqueous emulsion solutions Em-2 to Em-5 of Examples 2 to 5 of the present invention, respectively. Specifically, the ratios of polymer I-1 and polymer II were changed in the manner shown in Table 1 with the ratio of polymer I as the protective colloid and polymer II as the coating component to obtain the examples of the present invention, respectively. 2-5 aqueous emulsion solutions Em-2-Em-5. The properties and the like of these aqueous emulsion solutions were obtained in the same manner as in Example 1, and are summarized in Table 1. In addition, in Table 1, the correlation value of the emulsion aqueous solution Em-1 of Example 1 is shown together.

[0150] Table 1: Properties, etc. of each emulsion aqueous solution

[0151]

[0152] As c...

Embodiment 6、7

[0153] [Example 6, 7] Emulsions (Em-6, Em-7) using polymer I-1

[0154] Except changing the ratio of BA and St, which are the forming components of polymer II, as shown in Table 2, the emulsion aqueous solution Em-6 and Em-7 of the present invention were obtained in the same manner as Em-1 in Example 1. . These examples were used to study the effect of Tg on Polymer II by varying the ratio of BA and St to vary the Tg of Polymer II. In the same manner as in Example 1, properties and the like of these aqueous emulsion solutions were obtained and are shown in Table 2. In addition, in Table 2, the correlation value of the emulsion aqueous solution Em-1 of Example 1 is shown together.

[0155] Table 2: Properties, etc. of each emulsion aqueous solution

[0156]

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Abstract

Provided is a novel aqueous emulsion solution that can be formed into a binder for coating film formation purposes which is suitable for an inkjet printing mode. An aqueous emulsion solution comprising a polymer (I) and a polymer (II) in a mixed state, wherein the polymer (I) is an A-B block copolymer containing 90% or more of a methacrylate monomer and is neutralized with an alkali agent, the chain A is substantially insoluble in water and has a number average molecular weight of 1000 to 10000 and a dispersion degree of 1.5 or less, the chain B is synthesized using a monomer containing methacrylic acid and has an acid value of 30 to 250 mgKOH / g, the A-B block copolymer has a number average molecular weight of 5000 to 20000, a chain A content of 5 to 60% and an entire dispersion degree of 1.6 or less, the polymer (II) is produced by polymerizing a hydrophobic addition-polymerizable monomer and has a Tg value of 70˚C or lower, and the ratio of the amount of the polymer (I) to the amount of the polymer (II) is (5 to 80):(95 to 20) by mass.

Description

technical field [0001] The present invention relates to an aqueous emulsion solution that is a coating component suitable for inkjet printing, a colorant composition containing the aqueous solution, an aqueous inkjet ink, and a method for producing the aqueous emulsion solution. Background technique [0002] Inkjet printers are used in a variety of ways due to their high functionality, such as personal use, business use, various business use, document recording, color image display, and color photo use. Furthermore, as an industrial use, the use is expanded to correspond to high-speed printing. In water-based pigment inks for inkjet inks, the miniaturization of pigment particles in inks is being promoted in order to improve the vividness of pigments, clarity of colors, and color density. On the other hand, miniaturization of ejected liquid droplets (ink droplets) is being promoted in order to cope with increased speed and improved image quality brought about by improvement ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/00C08K3/00C08K5/00C08L33/06C09B67/20C09B67/46C09D11/32C09D17/00
CPCC08L53/00C08F293/005C08L33/08C09B67/009C09D11/106C09D11/107C09D11/32C09D17/00C09D153/00C08K5/23C08K5/3417C08K5/3437C08F220/1807C08F220/20C08F220/06C08F220/1806C08F220/14C08F220/1804C08F212/08C09D11/322C09D11/324C09D11/328
Inventor 嶋中博之村上贺一青柳真一郞吉川幸男山崎三雄
Owner DAINICHISEIKA COLOR & CHEM MFG CO LTD
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