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Ink for active energy ray-curable inkjet recording

A technology of active energy ray and inkjet recording, which can be used in ink, applications, household appliances, etc., and can solve the problem that there is no record of the effect of color mixing inhibition

Active Publication Date: 2015-07-22
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, on the other hand, the problem that the ink itself shrinks when ejected on a non-absorbing medium should be solved as an active energy ray-curable ink in the same way as the inkjet recording method using water-based or organic-solvent-based inks. problem left over
In addition, for active energy ray-curable inks, even if it is possible to prevent color mixing with other colors by irradiating active energy rays immediately after each color is ejected, there will be a new problem that occurs on the non-absorbing medium. In the area where ink of another color is repeatedly coated on the cured coating film of the jetted ink, it is necessary to suppress shrinkage of both the medium and the cured coating film of the ink
[0010] In active energy ray-curable inkjet recording inks, silicone acrylates are used as surface tension regulators (Patent Document 3), and are sometimes described together with other silicone compounds and fluorine compounds (Patent Document 4). The color mixing suppression effect described in the present application is not described, and the method of use in the invention of the present application for maximizing this effect has not been known until now.

Method used

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  • Ink for active energy ray-curable inkjet recording
  • Ink for active energy ray-curable inkjet recording
  • Ink for active energy ray-curable inkjet recording

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0115] Add 13.4 parts of dipropylene glycol diacrylate, 6.0 parts of pentaerythritol hexaacrylate, 30.5 parts of 2-(2,-ethyleneoxyethoxy)ethyl acrylate, and 9.0 parts of isooctyl acrylate, and use it as a photopolymerization initiator at 60°C 3.0 parts of IRGACURE819, 4.0 parts of LUCIRIN TPO, 2.5 parts of DAROCURE DR1173 and 1.0 parts of IRGACURE907 were heated and dissolved. Furthermore, 24.0 parts of high-concentration yellow dispersion liquids and 0.3 parts of Tego Rad2300 and 1.0 parts of Tego Rad2100 which are two types of silicone polyether acrylates which were prepared by the adjustment of high-concentration yellow dispersion liquid were added to this solution. Further add 2.5 parts of 2,4-diethylthioxanthone as a sensitizer, 2.5 parts of dimethylaminobenzoic acid as a sensitizer, 0.1 part of 2,5-di-tert-butyl hydroquinone as a polymerization inhibitor, 0.2 parts Modified silicone oil. These substances were added and mixed sufficiently, and then filtered through a 1.2...

Embodiment 2～6、 comparative example 1～12）

[0117] In the same manner as in Example 1, the active energy ray-curable inkjet recording ink compositions of Examples 2 to 6 and Comparative Examples 1 to 12 were prepared according to the formulations described in Tables 1 and 2. The prepared active energy ray-curable inkjet recording ink compositions of Examples 2 to 6 are referred to as Naenta1, Cyan1, Black1, Magenta2, and Cyan2. Further, the active energy ray-curable inkjet recording ink compositions of Comparative Examples 1 to 12 are referred to as Yellow3, Magenta3, Cyan3, Black3, Yellow4, Magenta4, Cyan4, Black4, Magenta5, Cyan5, Magenta6, and Cyan6.

[0118] [Table 1]

[0119] (Table 1)

[0120]

[0121] [Table 2]

[0122] (Table 2)

[0123]

[0124] The names described in the columns of each raw material in Table 1 and Table 2 are the names that are considered to be the most commonly used among product names and chemical substance names.

[0125] The chemical substance names, trade names, and manufacturer...

Embodiment 7-1）

[0186] Using Yellow1 and Magenta1 in the ink set 1 composed of Yellow1, Magenta1, Cyan1, and Black1 produced in Examples 1 to 4, the occurrence of color mixing when they are ejected to the recording medium in a close manner is carried out as follows Evaluation.

[0187] [Desktop evaluation of color mixing occurrence status (color mixing evaluation 1)]

[0188] On a 5 cm × 5 cm PET film (Lumirror250E22, manufactured by Toray Co., Ltd.), using a micropipette, two inks of different colors selected from ink set 1 (for example, Yellow1 (Y1) and Magenta1 (M1) ) at the same time by dropping 50 μl at a constant distance of 1 cm from the position that is the rotation center of the spin coater. At this time, the two dropping positions are aligned with the center of rotation. Using a spin coater at a constant rotation speed of 6,000 rotations for 10 seconds, the midpoint of the two dripping points of the ink was used as the center of rotation to spread the coating film. Thus, if figu...

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Abstract

Provided is an active-energy-radiation-curable inkjet recording ink that experiences reduced repulsion when ejected onto nonabsorbent substrates, that has good curability, and that causes little color mixing between uncured coatings formed adjacent to each other by ejecting inks and can thus form fine images on nonabsorbent substrates. The present invention provides an active-energy-radiation-curable inkjet recording ink containing a pigment, a silicone acrylate, an active-energy-radiation-curable compound other than the silicone acrylate, and a radical polymerization initiator. The silicone acrylate is a particular organically modified silicone acrylate including a side chain containing a polyoxyalkylene having a (meth)acryloyl group at an end thereof. The active-energy-radiation-curable compound is a compound (E) having a (meth)acryloyl group and a vinyl ether group.

Description

technical field [0001] The present invention relates to an active energy ray curable inkjet recording ink that forms a cured coating film by irradiating an active energy ray such as ultraviolet rays, electron beams, or radioactive rays after discharging an ink composition onto a recording medium. Background technique [0002] Printing by the inkjet recording method is inexpensive, the printer is easy to downsize, and does not require complicated maintenance and adjustment, so it is currently widely used mainly for office use and home use. With regard to inkjet inks, in addition to dyes, organic pigments have recently been widely used as colorants, and water resistance and long-term storage stability of images have also been improved. In addition, from the viewpoint of inkjet printers, high-speed printability and long-term discharge stability have been further improved, and the application of inkjet recording methods to industrial applications has also expanded. [0003] For...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/30B41J2/01B41M5/00
CPCC09D11/38C09D11/101C09D11/322C09D11/30C09D11/40
Inventor 山田智和千坂勇一川合一成木内能高
Owner DIC CORP
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