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Non-aqueous pigment ink and pigment dispersant for non-aqueous pigment ink

A non-aqueous, pigment-based technology, applied in the field of non-aqueous pigment inks and pigment dispersants for non-aqueous pigment inks, which can solve the problems of high viscosity and achieve the effects of reduced print-through, good storage stability, and high image density

Active Publication Date: 2013-04-24
RISO KAGAKU CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For inkjet inks, low-viscosity inks are suitable, but when the polymer having a urethane group of Patent Document 1 is mixed with the ink, the viscosity tends to increase

Method used

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  • Non-aqueous pigment ink and pigment dispersant for non-aqueous pigment ink
  • Non-aqueous pigment ink and pigment dispersant for non-aqueous pigment ink
  • Non-aqueous pigment ink and pigment dispersant for non-aqueous pigment ink

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Embodiment

[0086] Hereinafter, the present invention will be described in detail by way of examples, but the present invention is not limited to them. Hereinafter, "mass %" will be described only as "%". In addition, unless otherwise specified, the same thing was used for the common component in an Example.

[0087]

[0088] Process 1

[0089] 75 g of AF-4 (naphthalene-based solvent; manufactured by JX Nippon Oil & Energy Corporation) was charged to a 300 ml four-necked flask, and the temperature was raised to 110° C. while blowing in nitrogen gas and stirring. Next, a monomer mixture having the composition shown in Table 1 was added to the flask while maintaining the temperature at 110°C, and then, 16.7 g of AF-4 and 2 g of Perbutyl O (tert-butyl 2-ethylhexanoate peroxide; manufactured by NOF Corporation). Thereafter, 0.2 g of Perbutyl O was added after 1 hour and 2 hours while maintaining the temperature at 110°C.

[0090] The mass average molecular weight (GPC method, standard...

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Abstract

The invention relates to a non-aqueous pigment ink and a pigment dispersant for the non-aqueous pigment ink. The non-aqueous pigment ink comprises an alkyl(meth)acrylate copolymer containing an alkyl(meth)acrylate unit having an alkyl group of 12 or more carbon atoms and a (meth)acrylate unit having a pyridyl group, a pigment, and a non-aqueous solvent. Thereby, a non-aqueous pigment ink can be provided that exhibits high image density, reduced show-through and favorable storage stability.

Description

technical field [0001] The present invention relates to a non-aqueous pigment ink and a pigment dispersant for the non-aqueous pigment ink. Background technique [0002] As the coloring material of the ink used in the inkjet recording system, it can be roughly divided into the coloring material using the pigment and the coloring material using the dye. Since the light resistance, weather resistance and water resistance necessary for high-quality image printing are excellent, there are pigments The tendency for the ink of the colorant to increase. [0003] From the perspective of solvents, inks can be broadly classified into water-based inks and non-aqueous-based inks. Like solvent-based inks based on volatile solvents and oil-based inks based on non-volatile solvents, non-aqueous inks that do not use water as ink solvents have better drying properties and better printability than water-based inks. Also excellent. [0004] For non-aqueous inks, in general, when using a pig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/10C09D17/00B41J2/01B41M5/00C09D11/00C09D11/322C09D11/326C09D11/36C09D11/38
CPCC09D11/326C09D11/36
Inventor 清水麻奈美本山恭子
Owner RISO KAGAKU CORP