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Binder for ink-jet printing ink, ink-jet printing ink containing same, and printed matter

An inkjet printing and adhesive technology, applied in the field of inkjet printing inks and adhesives, can solve problems such as deterioration, floating and damage on the printing surface, and achieve the effects of excellent alkali resistance and excellent alcohol resistance.

Inactive Publication Date: 2012-05-23
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, as inkjet printed matter is widely used, a higher level of scratch resistance is required. Among them, the printed image formed using the above-mentioned inkjet recording ink is, for example, under the situation where an extremely strong external force is applied. , Sometimes it still causes fading, deterioration or damage of the printed image caused by the peeling off of the pigment
In addition, there is a problem that floating or bleeding occurs on the printed surface when, for example, an alkaline cleaning agent or the like adheres to the surface of the image printed using the above-mentioned inkjet recording ink.
[0008] As mentioned above, although the industry requires an inkjet printing ink that can form a high-gloss printed image with excellent scratch resistance and excellent alkali resistance, no inkjet ink having the above characteristics has been found. Ink for ink printing and binder for inkjet printing ink which can be used for its production

Method used

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  • Binder for ink-jet printing ink, ink-jet printing ink containing same, and printed matter
  • Binder for ink-jet printing ink, ink-jet printing ink containing same, and printed matter
  • Binder for ink-jet printing ink, ink-jet printing ink containing same, and printed matter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0118] In a nitrogen-substituted container equipped with a thermometer, a nitrogen introduction tube, and a stirrer, polyether polyol ("PTMG1000" polyoxyl oxide manufactured by Mitsubishi Chemical Corporation) was prepared in the presence of 82.1 parts by mass of methyl ethyl ketone as an organic solvent. Tetramethylene glycol, number average molecular weight (1000) 143.5 parts by mass, 9.0 parts by mass of 2,2-dimethylolpropionic acid, 19.2 parts by mass of 1,4-cyclohexanedimethanol, and 74.8 parts by mass of isophorone diisocyanate The mass parts were reacted for 4 hours, and 50.5 mass parts of methyl ethyl ketone was added as a diluting solvent, and the reaction was continued.

[0119] When the weight-average molecular weight of the reactant reaches the range of 20000-50000, the reaction is terminated by adding 2.2 parts by mass of methanol, and 66.7 parts by mass of methyl ethyl ketone as a diluent solvent is added to obtain an organic solvent solution of polyurethane (acid...

Embodiment 2

[0123] In a nitrogen-substituted container equipped with a thermometer, a nitrogen introduction tube, and a stirrer, polyether polyol ("PTMG2000 "Polyoxytetramethylene glycol manufactured by Mitsubishi Chemical Corporation, number average molecular weight (2000) 117.9 parts by mass, 15.8 parts by mass of 2,2-dimethylolpropionic acid, 28.3 parts by mass of 1,4-cyclohexanedimethanol 128.9 parts by mass of dicyclohexylmethane diisocyanate and 128.9 parts by mass of dicyclohexylmethane diisocyanate were reacted for 6 hours, and 80.8 parts by mass of methyl ethyl ketone was added as a diluting solvent, and the reaction was continued.

[0124] When the NCO% remaining in the reactant reaches the theoretical value, cool to 50°C, add 11.9 parts by mass of triethylamine to neutralize part or all of the carboxyl groups of the above-mentioned polyurethane, then add 794.4 parts by mass of water and stir thoroughly , thus obtaining an aqueous dispersion of polyurethane.

[0125] 13.0 parts...

Embodiment 3

[0128] Polycarbonate diol ("ETERNACOLL UM-90 (3 / 1)" Copolycarbonate diol of 1,4-cyclohexanedimethanol and 1,6-hexanediol manufactured by Ube Industries, Ltd., number average molecular weight about 900) 130.6 parts by mass, 2,2-dimethylolpropane 9.0 parts by mass of acid, 19.9 parts by mass of neopentyl glycol, and 86.9 parts by mass of isophorone diisocyanate were reacted for 4 hours, and 82.1 parts by mass of methyl ethyl ketone as a diluent solvent was added to continue the reaction.

[0129] When the weight average molecular weight of the reactant reached the range of 20,000 to 50,000, the reaction was terminated by adding 2.6 parts by mass of methanol, and 52.2 parts by mass of methyl ethyl ketone as a diluent solvent was added to obtain an organic solvent solution of polyurethane.

[0130] Next, by adding 7.6 parts by mass of 48% by mass potassium hydroxide aqueous solution to the organic solvent solution of the above-mentioned polyurethane to neutralize part or all of th...

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Abstract

The present invention relates to a binder for an ink-jet printing ink, the binder containing an aqueous medium (D); and a polyurethane (C) having a weight-average molecular weight of 30,000 to 200,000 and obtained by reacting a polyol (A) containing an alicyclic structure-containing polyol (a1) and a hydrophilic group-containing polyol (a2) with a polyisocyanate (B), the polyurethane (C) being dispersed in the aqueous medium (D), wherein a ratio of an alicyclic structure contained in the polyurethane (C) relative to the total mass of the polyurethane (C) is 1,000 to 5,500 mmol / kg, an ink-jet printing ink containing the binder, and printed matter.

Description

technical field [0001] The present invention relates to a binder for ink that can be used for inkjet printing and ink for inkjet printing containing the binder. Background technique [0002] In recent years, in the inkjet printing-related industries that have grown significantly, the performance of inkjet printers and the improvement of ink are being actively carried out. Even in ordinary households, it is possible to easily Get high-definition images. [0003] Among them, in terms of ink, improvements for high image quality and reduction of environmental load are being rapidly carried out, such as transferring from the current dye ink to pigment ink or transferring from solvent system to water system. Carry out ink development based on water-based pigment ink. [0004] In addition, with regard to the above-mentioned inks, as the performance of inkjet printers and the like increases, higher levels of performance are required every year. For example, in addition to good dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/00B41J2/01B41M5/00C08G18/32
CPCC08G18/4854C08G18/0823C08G18/6659C09D11/30C08G18/6692C08G18/44Y10T428/24802B41J2/01B41M5/00C08G18/32
Inventor 永浜定
Owner DIC CORP
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