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Organic particle for inkjet recording sheet and ink jet recording sheet

An organic particle, recording sheet technology, applied in the direction of copying/marking method, printing, etc., can solve the problem of difficulty in obtaining high gloss ink absorption, color development concentration, water resistance, light resistance, yellowing resistance, and inability to obtain ink absorption, etc. question

Inactive Publication Date: 2009-09-16
MITSUI CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, acrylic-styrene-based organic particles copolymerized with hydrophilic monomers such as (meth)acrylamide do not depend on the glass transition temperature (Tg) of the organic particles to be transformed. When the smoothing treatment is performed at high temperature such as the pour coating method, the particles are thermally denatured and the voids are blocked, and there is a problem that sufficient ink absorption cannot be obtained.
[0008] In this way, in the prior art, it is difficult to obtain inkjet recording that simultaneously satisfies high gloss, ink absorption, color density, water resistance, light resistance, and anti-yellowing, and is suitable for both dye-based and pigment-based inks. Sheet

Method used

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  • Organic particle for inkjet recording sheet and ink jet recording sheet
  • Organic particle for inkjet recording sheet and ink jet recording sheet
  • Organic particle for inkjet recording sheet and ink jet recording sheet

Examples

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Embodiment

[0085] Hereinafter, the present invention will be described with reference to examples, but the present invention is not limited to these examples. In addition, the parts and % shown in an Example represent a weight part and weight% unless otherwise indicated.

[0086]

[0087] Table 1 shows the composition, obtained glass transition temperature (Tg), particle size, and ionicity of the organic particles.

manufacture example 1

[0089] Put 195 parts of deionized water and 2.0 parts of stearyl trimethylammonium chloride into the reaction vessel, raise the temperature to 70°C under nitrogen flow, add 2,2'-azobis(2-amidinopropane) di 0.5 parts of hydrochloride. In addition, 5 parts of 2-hydroxyethyl methacrylate, 60 parts of isobornyl methacrylate, methyl methacrylate 35 parts were emulsified and an emulsified mixture was obtained, and this emulsified mixture was dripped in the reaction container over 4 hours, and it held at the same temperature for further 4 hours after that. As a result, an emulsion composition in which organic particles were dispersed in water was obtained, the non-volatile content was 30%, the pH was 5, the average particle diameter measured by light scattering was 60 nm, and the organic particle aggregation obtained from the DSC curve according to JIS K 7121 The glass transition temperature of the compound is 111°C.

manufacture example 2

[0091] Except putting 195 parts of deionized water and 1.8 parts of stearyl trimethyl ammonium chloride into a reaction container, it manufactured with the composition ratio shown in Table 1 like the manufacture example 1. As a result, an emulsion composition in which organic particles were dispersed in water was obtained. The nonvolatile content was 30%, the pH was 5, the average particle diameter measured by light scattering was 91 nm, and the glass transition temperature of the organic particle polymer was 106°C.

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Abstract

The present invention relates to an organic particle for an inkjet recording sheet, characterized in that the organic particle comprises (A) an alicyclic (meth)acrylate represented by [Chem. 1] and (B) other copolymerizable A copolymer (a) obtained by copolymerizing monomers, [Chem. 1] wherein R represents hydrogen or a methyl group, and R1 represents an alicyclic hydrocarbon group having 8 to 20 carbon atoms. The present invention also relates to the inkjet recording sheet A method for producing organic particles for materials and an inkjet recording sheet composed of the organic particles for inkjet recording.

Description

technical field [0001] The present invention relates to organic particles for inkjet recording used in printers or plotters utilizing inkjet recording, and an inkjet recording sheet composed of the same. Background technique [0002] The inkjet recording method is a method in which images, characters, and the like are recorded by flying minute droplets of ink and adhering them to a recording sheet such as paper using various operating principles. Printers and plotters using the inkjet method respond by increasing the amount of ink ejected in order to meet higher requirements for image quality from the market, achieve higher resolution, and expand the range of color reproduction. Therefore, increasing the ink acceptance amount corresponding to the ejection amount is an important technical issue of the recording sheet, and securing a high ink acceptance capacity or coating with a good color rendering property is essential. In addition, the appearance of gloss, rigidity, and c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41M5/00B41J2/01C08F20/18
Inventor 富田嘉彦楠本征也冈田康雄
Owner MITSUI CHEM INC