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Polymer emulsion and aqueous inkjet recording liquid containing the polymer emulsion

A polymer emulsion, water-based inkjet technology, applied in the direction of ink, copy/marking method, application, etc., can solve problems such as inability to meet, and achieve the effect of improving clogging and excellent wear resistance

Inactive Publication Date: 2011-12-07
TOYO INK SC HLDG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in recent years, the application of inkjet recording methods in various fields has expanded year by year, and the requirements for OD value and wear resistance have become more and more stringent. The existing inkjet recording liquids described in the above-mentioned patent documents None of these stringent requirements can be met

Method used

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  • Polymer emulsion and aqueous inkjet recording liquid containing the polymer emulsion
  • Polymer emulsion and aqueous inkjet recording liquid containing the polymer emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0159]

[0160] 1.2 parts of acrylic acid as the monomer (a1), 6 parts of Sila-ace 210 (サイラエース210, registered trademark) (vinyltrimethoxysilane, manufactured by CHISSO CORPORATION) as the monomer (a2), 40.5 parts as Monomer (a3) ​​of methyl methacrylate, 51.3 parts of 2-ethylhexyl acrylate, 1.0 parts of acrylamide, 1.5 parts of akualong KH-20 (manufactured by Daiichi Kogyo Pharmaceutical Co., Ltd.) as an emulsifier Sexual emulsifier), and the mixture of 53.1 parts of ion-exchanged water were emulsified by a batch homomixer to prepare monomer pre-emulsion, and put into the dropping tank.

[0161] In addition, in order to maintain the measurement accuracy, distilled water was used to dilute the monomer pre-emulsion with a monomer concentration of about 60%, so that the number of particles larger than 0.5 μm reached about 5000 / cm3. For diluents with a monomer concentration of about 0.002%, use an Accusizer manufactured by PARTICLE SIZING SYSTEMS, USA, and calculate the volume a...

Embodiment 2～5

[0175] A polymer emulsion was obtained in the same manner as in Example 1, except that the composition of the monomers which were added to the dropping tank and constituted the monomer pre-emulsion was changed to the composition shown in Table 1. Using the obtained polymer emulsion, it carried out similarly to Example 1, and obtained the aqueous inkjet recording liquid, and performed the same evaluation.

Embodiment 6～7

[0177] The amount of the emulsifier Akuaronn KH-20 that is added to the dropping tank and that constitutes the monomer pre-emulsion is changed to the amount shown in Table 1, and the stirring conditions of the batch homomixer are changed to make the D50 grains of the monomer pre-emulsion Diameter (volume average particle diameter) was the same as that of Example 1 to obtain a polymer emulsion. Using the obtained polymer emulsion, it carried out similarly to Example 1, and obtained the aqueous inkjet recording liquid, and performed the same evaluation.

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Abstract

Provided is a pigmented aqueous inkjet recording liquid with which clogging of a nozzle is improved and stable discharge is possible, with said aqueous inkjet recording liquid having excellent properties-in particular, an optical density (OD) value and wear resistance-which are required of an inkjet recording liquid. This aqueous inkjet recording liquid is a polymer emulsion which is obtained by using specific amounts of an emulsifier, water, and an aqueous polymerization initiator to radical-polymerize a radical-polymerizable unsaturated monomer (a), for which a radical-polymerizable unsaturated monomer (a2) having a specific amount of an alkoxysilyl group is an essential component; wherein said recording liquid contains a pigment and a polymer emulsion in which, according to the particle counting method, the number of 1.5 [mu]m or larger ultra-coarse particles in the polymer emulsion when converted to a solid content concentration 0.1% is 5.0*105 / cm3.

Description

technical field [0001] The present invention relates to a polymer emulsion, a pigment-based aqueous inkjet recording liquid containing the polymer emulsion, and a method for producing the polymer emulsion. Background technique [0002] With the development of high-resolution and high-performance inkjet recording methods in recent years, pigment inks with excellent water resistance and weather resistance have become the focus of attention as a technology to replace existing dye inks, and pigment inks have been developed. various discussions. [0003] However, since the pigment is insoluble in water, the dispersed state of the pigment in the aqueous inkjet recording liquid cannot be maintained without using a binder resin for maintaining stable dispersion, and there is a problem of nozzle clogging. In addition, since the pigment itself has no fixability to the recording paper and the OHP sheet, the optical density (hereinafter referred to as "OD value") required for printed m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/24B41J2/01B41M5/00C09D11/00C08F220/26C09D11/023C09D11/037C09D11/10C09D11/106C09D11/107C09D11/322C09D11/324
CPCC08F220/14C09D11/322C09D11/324C08F230/08C08F2220/1833C08F220/06C08F2/24C08F230/085C08F220/1808C09D11/30
Inventor 大岛由照北本刚鹫尾智史
Owner TOYO INK SC HLDG CO LTD
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