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Pigmented ink composition

A technology of ink composition and pigment, applied in the direction of ink, printing, copying/marking methods, etc., can solve the problems of reduced dryness, staining, wetting, etc., achieve good dryness, improve safety and odor, excellent The effect of water resistance

Inactive Publication Date: 2008-04-23
HITACHT MAXELL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the ester derivative of propylene glycol with a high flash point is used as the main solvent of the ink, the drying property will be reduced, causing bleeding and smearing, and because the solubility of the resin is low, the dispersibility of the resin is poor, and the long-term storage is stable. sexual inadequacy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Pigments, resins, and solvents were blended in the following proportions, stirred at 2,000 rpm for 30 minutes using a disperser (manufactured by Tokuku Kikka Kogyo Co., Ltd.), and then circulated through a bead mill filled with 0.3 mm zirconia beads (retention Time 30 minutes), prepare the pigment dispersion.

[0087] Pigment: β-copper phthalocyanine blue ("FASTOGENBLUE 5430SD" manufactured by Dainippon Ink Chemical Industry Co., Ltd.) ... 20 parts

[0088] Resin (pigment dispersant): amine-based polymer dispersant ("BYK168" manufactured by BYK Chemical Co., Ltd.)...... 40 parts

[0089] Solvent: Ethylene glycol mono-n-butyl ether monomethyl ester (manufactured by Kyowa Hakka Chemical Co., Ltd., flash point 87.5° C.) ...... 40 parts

[0090] Measure 15 parts of the obtained dispersion, and utilize a disperser to drop in the following materials one by one while stirring under the condition of 1500rpm. After dropping in all the materials, stir for 30 minutes, then use gl...

Embodiment 2

[0096] Measure 15 parts of the dispersion that obtains in embodiment 1, utilize disperser to drop into following material successively while stirring under the condition of 1500rpm, stir 30 minutes after dropping into all materials, carry out suction filtration with glass fiber filter paper then, obtain Ink Composition B.

[0097] Ethylene glycol mono-n-butyl ether monomethyl ester......36 parts

[0098] Gamma-butyrolactone...25 parts

[0099] Diethylene glycol diethyl ether (manufactured by Nippon Emulsifier Co., Ltd., flash point 82° C.) ...... 20 parts

[0100] Resin: vinyl chloride-vinyl acetate copolymer resin (manufactured by Dow Chemical Company, "VYHH", weight average molecular weight 27000) ... 4 parts

Embodiment 3

[0102] Measure 15 parts of the dispersion that obtains in embodiment 1, utilize disperser to drop into following material successively while stirring under the condition of 1500rpm, stir 30 minutes after dropping into all materials, carry out suction filtration with glass fiber filter paper then, obtain Ink composition C.

[0103] Ethylene glycol mono-n-butyl ether monomethyl ester......46 parts

[0104] ε-caprolactone (manufactured by Wako Pure Chemical Industries, Ltd., flash point 109° C.)  … 20 parts

[0105] Diethylene glycol diethyl ether......15 parts

[0106] Resin: vinyl chloride-vinyl acetate copolymer resin (manufactured by Nissin Chemical Industry Co., Ltd., "solbin C5R", weight average molecular weight 27000) ... 4 parts

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Abstract

An oil-based pigmented ink composition, which achieves good drying properties of printed materials and a long-term storage stability that are important for an ink composition containing an organic solvent, can be printed on an expensive printing medium, containing a pigment, a polymer and an organic solvent, in which the organic solvent contains 20 to 85% by weight of an ester derivative of mono- or polyethylene glycol having a flash point of 50 to 120 DEG C. and a boiling point of 150 to 250 DEG C., 5 to 50% by weight of a mono- or polyalkylene glycol dialkyl ether and 1 to 30% by weight of an oxygen-containing heterocyclic compound, each based on the whole weight of the ink composition.

Description

technical field [0001] The present invention relates to an oil-based pigment ink composition containing at least a pigment, a polymer compound and an organic solvent, and particularly relates to an oil-based pigment ink composition for inkjet recording. Background technique [0002] The inkjet recording method uses pressure, heat, electric field, etc. as the driving source to spray liquid ink to the recording medium through the nozzle of the inkjet printer, and print characters, images, etc. on the recording medium. This type of recording method has low operating costs, enables high-quality printing, and can be printed with various inks such as water-based and oil-based, and the market has been expanding in recent years. [0003] Under such circumstances, large-scale inkjet printers that use water-based pigment inks and are compatible with A-type to O-type have been developed, and are used for indoor poster printing, output of CAD drawings, and output of proofs for printing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/10B41J2/01B41M5/00C09D11/00C09D11/322C09D11/36C09D11/38
CPCC09D11/36C08K5/0041C08K5/103
Inventor 水谷拓雄
Owner HITACHT MAXELL LTD
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