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Alcohol-based printing ink composition

A technology of printing ink and composition, which is applied in the field of alcohol-based printing ink composition, which can solve the problems of poor compatibility of binder resin and inability to ensure the dispersion stability of pigments, etc., and achieve the effect of excellent film physical properties and excellent storage stability

Inactive Publication Date: 2013-09-04
TOYO INK SC HLDG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for organic pigments such as copper phthalocyanine blue pigments whose surface is hydrophobic, the compatibility with the hydrophilized binder resin deteriorates, and the dispersion stability of the pigment cannot be ensured.

Method used

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  • Alcohol-based printing ink composition
  • Alcohol-based printing ink composition
  • Alcohol-based printing ink composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0091] Hereinafter, the present invention will be further specifically described through examples, but the following examples do not limit the claims of the present invention in any way. Here, "parts" in the examples means "parts by weight", and "%" means "% by weight".

[0092] However, the measuring methods of "resin solid content concentration", "viscosity", "amine value", "weight average molecular weight" and "acid value" in Examples are as follows.

[0093] Resin solid content concentration: The heating residual content when measured at a heating temperature of 150° C. for a heating time of 20 minutes in accordance with JIS K5601-1-2 was defined as the resin solid content concentration (%).

[0094] Viscosity: Measured at 25°C with an E-type viscometer.

[0095] Amine value: Measure about 3 g of polyurethane urea resin solution in a flask, add 50 ml of methanol to dissolve, titrate with 0.1 mol / l hydrochloric acid standard solution by potentiometric titration, and calcul...

Synthetic example 1

[0103] (Synthesis example 1)

[0104] In a flask equipped with a stirrer, a thermometer, a reflux condenser, and a nitrogen inlet tube, add 33.5 parts of a polycondensate of adipic acid and 3-methyl-1,5-pentanediol (hydroxyl value: 56.1 mg KOH / g, number average Molecular weight 2000), 33.5 parts of polypropylene glycol (hydroxyl value 56.1mg KOH / g, number average molecular weight 2000), 4.6 parts of 1,3-propanediol and 41.6 parts of isophorone diisocyanate were reacted at 90°C under nitrogen flow for 6 hours, to manufacture polyurethane prepolymers. Then, 48.5 parts of tert-butanol were added to the obtained polyurethane prepolymer to prepare a uniform solution of the polyurethane prepolymer. Then, in a mixture composed of 17.2 parts of isophorone diamine and 342.4 parts of ethanol, the above-mentioned polyurethane prepolymer solution was added dropwise for 1 hour, followed by reaction for 1 hour, thereby obtaining polyurethane urea resin (D-1) The solution. Regarding the ...

Synthetic example 2

[0105] (Synthesis example 2)

[0106] 40.5 parts of castor oil polyol (product name: "URIC H1824" manufactured by Ito Oil Co., Ltd., hydroxyl value 71.2 mg KOH / g, average number of functional groups 2 , number average molecular weight 1576), 27.0 parts of polypropylene glycol (hydroxyl value 56.1mg KOH / g, number average molecular weight 2000), 4.1 parts of 1,3-propanediol and 41.6 parts of isophorone diisocyanate, under nitrogen flow, at 90 °C for 6 hours to produce a polyurethane prepolymer. Then, 48.5 parts of tert-butanol were added to the obtained polyurethane prepolymer to prepare a uniform solution of the polyurethane prepolymer. Then, in a mixture composed of 17.4 parts of isophorone diamine and 343.0 parts of ethanol, the above-mentioned polyurethane prepolymer solution was added dropwise for 1 hour, followed by reaction for 1 hour, thereby obtaining polyurethane urea resin (D-2) The solution. Regarding the obtained solution of polyurethane urea resin (D-2), the re...

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Abstract

An alcohol-based printing ink composition which contains: a polyurethane urea resin (D) that is obtained by having a polyol (A), a diisocyanate (B) and a chain extender (C) react with each other; a coloring agent (E); and an alcohol (F) and water as media. The alcohol-based printing ink composition is characterized in that the polyol (A) contains a polyether polyol (A1) and a polyester polyol (A2) and 75% by weight or more of the alcohol (F) is contained in 100% by weight of the total media.

Description

technical field [0001] The present invention relates to an alcohol-based printing ink composition. Background technique [0002] In recent years, due to the strengthening of laws and regulations and the consideration of environmental protection or safety, printing inks that do not contain toluene, which was previously suitable as a solvent for printing inks, and do not contain ketone solvents and ester solvents as much as possible increased demand. As such a solvent, an alcohol solvent attracts attention. Among them, effective use of bioethanol with low environmental load is desired, and Patent Document 1 discloses a dispersion of titanium dioxide containing ethanol as a main component as a solvent. [0003] However, in the case of printing inks using alcohol as the main solvent, it is necessary to solubilize the binder resin with alcohol, that is, to hydrophilize it. Titanium white having a hydrophilic particle surface is compatible with a hydrophilized binder resin. Ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/10C09D11/023C09D11/033C09D11/037C09D11/104
CPCC09D11/102C09D11/033
Inventor 大宅彻成广治宪野村雄史
Owner TOYO INK SC HLDG CO LTD
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