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Water-based printing ink composition

A technology of printing ink and composition, which is applied in the direction of ink, household utensils, applications, etc., can solve the problems of reduced concentration, precipitation, floating, and damage to the performance of printing inks, etc., and achieve excellent chemical resistance and excellent dispersibility Effect

Active Publication Date: 2018-04-20
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in addition to this, in the operation of dispersing the pigment and the operation of preparing the ink using the ink composition, gelation and solid parts may occur due to incompatibility between the raw materials depending on the type of the pigment. Sedimentation, floating, etc.
In addition, when the pigment is dispersed using a surfactant, the wettability to low-polarity plastic film substrates such as polyethylene deteriorates, and it becomes easy to cause printing defects such as a decrease in the concentration of printed matter, which may damage the ink used as a printing ink. liquid performance problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0040] 900 parts of isopropanol and 900 parts of ethanol were charged into a reaction container equipped with a stirrer, a reflux cooler, a temperature controller, and a nitrogen gas introduction pipe, and the temperature was raised to 80° C. under a nitrogen atmosphere. 100 parts of α-methylstyrene, 400 parts of cetyl methacrylate (C16), 155 parts of methyl methacrylate, 150 parts of ethyl acrylate, and 195 parts of methacrylic acid were added dropwise thereto over 4 hours. , a mixture of 40 parts of 2,2'-azobis(2-methylbutyronitrile), and 100 parts of isopropanol.

[0041]After completion of the dropwise addition, stirring was continued at the same temperature to react for 15 hours, then the temperature was lowered to 60° C., a mixture containing 40 parts of dimethylethanolamine and 100 parts of water was added, and stirred until uniform. Then, after adding 900 parts of ion-exchanged water and stirring uniformly, most of isopropanol and ethanol were removed by vacuum distill...

manufacture example 2

[0043] Using the same procedure as in Production Example 1, 100 parts of α-methylstyrene, 200 parts of hexadecyl methacrylate (C16), and 200 parts of tetradecyl methacrylate (C14) were added dropwise over 4 hours. A mixture of 155 parts of methyl methacrylate, 150 parts of ethyl acrylate, 195 parts of methacrylic acid, 40 parts of 2,2'-azobis(2-methylbutyronitrile), and 100 parts of isopropanol.

[0044] After completion of the dropwise addition, stirring was continued at the same temperature to react for 15 hours, then the temperature was lowered to 60°C, and a mixture containing 40 parts of dimethylethanolamine and 100 parts of water was added and stirred until uniform. Then, after adding 900 parts of ion-exchanged water and stirring uniformly, most of isopropanol and ethanol were removed by vacuum distillation. Dimethanolamine was added until the pH of the aqueous solution was 8.0, and stirred until uniform to obtain a water-based resin with a non-volatile content of 45%, a...

manufacture example 3

[0046] Using the same procedure as in Production Example 1, 100 parts of α-methylstyrene, 400 parts of octadecyl methacrylate (C18), 155 parts of methyl methacrylate, and 150 parts of ethyl acrylate were added dropwise over 4 hours. 195 parts of methacrylic acid, 40 parts of 2,2'-azobis(2-methylbutyronitrile), and 100 parts of isopropanol.

[0047] After completion of the dropwise addition, stirring was continued at the same temperature to react for 15 hours, then the temperature was lowered to 60°C, and a mixture containing 40 parts of dimethylethanolamine and 100 parts of water was added and stirred until uniform. Then, after adding 900 parts of ion-exchanged water and stirring uniformly, most of isopropanol and ethanol were removed by vacuum distillation. Dimethanolamine was added until the pH of the aqueous solution was 8.0, and stirred until uniform to obtain a water-based resin with a non-volatile content of 42%, an acid value of 125 mgKOH / g, a weight average molecular w...

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Abstract

Provided is an aqueous printing ink composition, in which an ethylene-(acrylic acid) copolymer is used as a binder and a pigment can be dispersed satisfactorily without requiring the use of a dispersant such as a highly hydrophilic surfactant, and which does not undergo incompatibilization between raw materials, e.g., gelatinization of the raw materials. An aqueous printing ink composition characterized by comprising: a pigment; and a copolymer which is produced by copolymerizing an α-methylstyrene monomer with monomer components including, as an essential component, an ester compound formed from an alcohol having 14 to 18 carbon atoms and an α,β-unsaturated carboxylic acid.

Description

technical field [0001] The present invention relates to a water-based printing ink composition having high chemical resistance such as alkali resistance and excellent printing adaptability and workability. Background technique [0002] Conventionally, in gravure and flexographic printing for flexible packaging materials used for packaging food and daily necessities, solvent-based inks have been the mainstream from the viewpoint of printing suitability. However, in recent years, from the viewpoint of preserving the global environment, in the flexible packaging material market, since the atmospheric emission of solvent vapor from solvent-based inks increases the environmental burden, it has been recognized as a problem. Therefore, with the aim of drastically reducing the amount of solvent used, water-based inks are being promoted. [0003] On the other hand, in the packaging for sanitary products such as detergents and soaps, these product components, etc. will come into cont...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/107
CPCC09D11/107
Inventor 片冈淳彦
Owner DIC CORP