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Inkjet ink

By using terpene phenol resins and rosin esters with specific hydroxyl values ​​as tackifiers in inkjet inks, combined with polyamide resins and oil-soluble dyes, the fixation and stability problems on polyolefin-based printed matter are solved. Better intermittent printability and storage stability are achieved.

Active Publication Date: 2016-12-14
GENERAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, conventional quick-drying inkjet inks such as the inks described in Patent Documents 1 to 3 have the following problems: not only the fixability of printing on polyolefin-based printed materials and the like cannot be sufficiently improved, but also the problem of Insufficient stability leads to precipitation easily, clogging of inkjet printer nozzles during printing unsealing time and easy occurrence of blurring when restarting printing (Original text: かすれ), etc.
Therefore, there is a tendency that nozzle clogging tends to occur more easily when this time, that is, the longer the unsealing time is.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0178] After blending the following components, it was filtered using a 5 μm membrane filter to prepare an inkjet ink.

[0179] Table 1

[0180] Element

parts by mass

polyamide resin

1.50

Rosin Ester

2.50

oil soluble dye

8.00

alcohol

62.80

glycol ether

20.00

Surfactant

1.00

fatty acid amides

0.20

Chelating compounds

2.00

Benzyl alcohol

1.50

Methyl dihydrojasmonate

0.50

[0181] Each component in a table|surface is as follows.

[0182] Polyamide resin: Versamid 759 manufactured by BASF JAPAN Co., Ltd.

[0183] Rosin ester: hydroxyl value: 30mgKOH / g

[0184] Oil-soluble dye: C.I. Solvent Black 29

[0185] Alcohol: ethanol

[0186] Glycol Ether: Propylene Glycol Methyl Ether

[0187] Surfactant: acrylic silicone copolymer surfactant

[0188] Fatty acid amides: oleic acid amide

[0189] Chelating compound: titanium acetylacetonate

[0190] In addition, the ...

Embodiment 2

[0192] An inkjet ink was prepared in the same manner as in Example 1, except that rosin ester having a hydroxyl value of 11.5 mgKOH / g was blended in the same amount.

[0193] The mixing ratio (mass ratio) of the polyamide resin to the rosin ester was 1 / 1.7.

Embodiment 3

[0195] An inkjet ink was prepared in the same manner as in Example 1, except that rosin ester having a hydroxyl value of 40 mgKOH / g was blended in the same amount.

[0196] The mixing ratio (mass ratio) of the polyamide resin to the rosin ester was 1 / 1.7.

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Abstract

[Problem] To provide a inkjet ink which has quick-drying properties, with which it is possible to sufficiently improve printing fixability on a nonabsorbing body made of polyolefin or the like, with which shelf life is excellent, separation is unlikely to occur even after a long period of time, intermittent printability is excellent, and clogging of the inkjet printer nozzle when decapped is unlikely to occur. [Solution] In the present invention, a terpene phenolic resin and / or rosin ester having a hydroxyl group value of 10 to 45 mg KOH / g is added as a tackifier to a combination of a polyamide resin, C1-3 alcohol and oil-soluble dye.

Description

technical field [0001] The present invention relates to an inkjet ink that can be printed on the surface of a non-absorbent to-be-printed object such as a plastic film, coated paper, or laminated paper by an inkjet printing method and does not require a heating and drying step after printing. Background technique [0002] For example, when printing onto the surface of a non-absorbent printing target such as a plastic film, coated paper, or laminated paper by an inkjet printing method, the printed inkjet ink is usually dried by heating. [0003] However, recently, even if only an organic solvent is used as a solvent, or water is used as a solvent in combination, inkjet inks such as HEATLESSINK (registered trademark) have been developed and put into practical use. By making the organic solvent more than water, so-called organic solvent enriched state, quick-drying property can be imparted, and the heating and drying step can be omitted. [0004] In addition, recently, in orde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/36B41J2/01B41M5/00C09D11/38
Inventor 矶部浩三
Owner GENERAL CO LTD
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