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Ink composition for inkjet printing

An inkjet printing and composition technology, applied in printing, ink, application, etc., can solve the problems of insufficient hardness and friction resistance of hardened products, and reduced crosslinking density, and achieve low shrinkage, maintain film strength, and produce excellent effect

Inactive Publication Date: 2015-10-21
DAI ICHI KOGYO SEIYAKU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Curing shrinkage is suppressed by modifying the cross-linkable monomer with caprolactone, but since the chain length of caprolactone is relatively large, the cross-link density decreases, and the hardness and friction resistance of the cured product may not be sufficient.

Method used

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  • Ink composition for inkjet printing
  • Ink composition for inkjet printing
  • Ink composition for inkjet printing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] [Example 1] (composition containing dipentaerythritol 3EO adduct acrylate)

[0082]

[0083] Add 254 g (1.0 mol) of dipentaerythritol (manufactured by Guangei Chemical Industry Co., Ltd., OH value 1324), 127 g of toluene, and 0.3 g of KOH to a 1 L autoclave equipped with a stirring device, and heat up to 90° C. Stir to make a slurry. Next, it heated to 130 degreeC, and 176 g (4 mol) of ethylene oxides were introduced into an autoclave slowly, and it was made to react. With the introduction of ethylene oxide, the temperature inside the autoclave rose. Cooling was performed as needed to keep the reaction temperature at 140°C or lower. After the reaction, excess ethylene oxide and polymers of by-produced ethylene glycol were removed by reducing the pressure at 140° C. to a mercury column of 10 mmHg or less. Thereafter, neutralization was performed with acetic acid, and the pH was adjusted to 6-7. The OH value of the obtained dipentaerythritol 3EO adduct was 897.

[...

Embodiment 2

[0096] [Example 2] (composition containing dipentaerythritol 4EO adduct acrylate)

[0097]

[0098] In an autoclave with a capacity of 1 L equipped with a stirring device, 254 g (1.0 mol) of dipentaerythritol (manufactured by Guangrong Chemical Industry Co., Ltd., OH value 1324), 127 g of toluene, and 0.3 g of KOH were added, and the temperature was raised to 90° C. and stirred to prepare Into a slurry liquid. Next, it heated to 130 degreeC, and 220 g (5 mol) of ethylene oxides were introduced into an autoclave slowly, and it was made to react. With the introduction of ethylene oxide, the temperature inside the autoclave rose. Cooling was performed as needed to keep the reaction temperature at 140°C or lower. After the reaction, excess ethylene oxide and polymers of by-produced ethylene glycol were removed by reducing the pressure at 140° C. to a mercury column of 10 mmHg or less. Thereafter, neutralization was performed with acetic acid, and the pH was adjusted to 6-7. ...

Embodiment 3

[0109] [Example 3] (composition containing dipentaerythritol 5EO adduct acrylate)

[0110]

[0111] In an autoclave with a capacity of 1 L equipped with a stirring device, 254 g (1.0 mol) of dipentaerythritol (manufactured by Guangrong Chemical Industry Co., Ltd., OH value 1324), 36 g of distilled water, and 0.3 g of KOH were added, and the temperature was raised to 90° C. and stirred to prepare Into a slurry liquid. Next, it heated to 130 degreeC, and 264 g (6 mol) of ethylene oxides were introduced into an autoclave slowly, and it was made to react. With the introduction of ethylene oxide, the temperature inside the autoclave rose. Cooling was performed as needed to keep the reaction temperature at 140°C or lower. After the reaction, excess ethylene oxide and polymers of by-produced ethylene glycol were removed by reducing the pressure at 140° C. to a mercury column of 10 mmHg or less. Thereafter, neutralization was performed with acetic acid, and the pH was adjusted to...

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PUM

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Abstract

Provided is an ink composition for inkjet printing which maintains low values for the viscosity of a cross-linkable monomer and the shrinkage upon curing, and exhibits favorable curability and abrasion resistance of the cured product thereof. An alkylene oxide-modified dipentaerythritol (meth)acrylate having a structure represented by general formulas (I) and (II) is used as a cross-linkable monomer. (I) (II) The average polymerization degree (L) of the added alkylene oxide chain satisfies the relationship 0<L≤5; the average value of m is more than 0 and not more than 6; the average number of added moles (L×m) of the alkylene oxide satisfies the relationship 0<L×m≤5; n is 1 or 2; the average value of o is 0-5, inclusive; and the sum of m, n and o is 6. R2 represents a hydrogen atom or a methyl group.

Description

technical field [0001] The present invention relates to a reactive ink composition suitable for printing or coating by means of ink jet. In particular, it relates to an ink composition that can be cured immediately by irradiating active energy lines (active energy lines) such as ultraviolet rays (ultraviolet, UV) and electron beams (electron beam, EB). Background technique [0002] Inkjet printing or coating is not only used for printing on paper, but also for printing or patterning on plastic materials or fiber materials. In recent years, it is also used for manufacturing Wiring formation of electronic and electric devices, resist pattern formation, etc. In particular, when using an ink composition that can be cured immediately by active energy rays, it is preferable because water resistance, solvent resistance, rubbing resistance, and the like can be imparted to the cured ink. [0003] In the inkjet printing ink composition described in Patent Document 1, the crosslinkab...

Claims

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Application Information

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IPC IPC(8): C09D11/30B41J2/01B41M5/00
CPCC09D11/30C09D11/101B41J2/01B41M5/00
Inventor 高村直宏
Owner DAI ICHI KOGYO SEIYAKU CO LTD
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