Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Non-aqueous pigment ink

A non-aqueous, non-aqueous resin technology, applied in the direction of ink, copying/marking methods, applications, etc., can solve the problems of easy occurrence of print through, low printing density, etc., achieve reduction of print through, improve storage stability, improve spray the effect of stability

Active Publication Date: 2013-09-25
RISO KAGAKU CORP
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the printing density becomes lower, and print-through is likely to occur

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Non-aqueous pigment ink
  • Non-aqueous pigment ink
  • Non-aqueous pigment ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] (1) Synthesis of copolymers (dry polymers a to f)

[0094] 75 g of AF-4 (a naphthene-based solvent; manufactured by Nippon Oil Corporation) was placed in a 300 ml four-neck flask, and the temperature was raised to 110° C. while blowing nitrogen gas and stirring. Then, the temperature was kept at 110° C., and 16.7 g of AF-4, 2 g of Perbutyl O (2-ethyl tert-butyl peroxyhexanoate; Japan Co., Ltd.) mixture. Then, the temperature was kept at 110° C., and 0.2 g of Perbutyl O were added after 1 hour and 2 hours each. Furthermore, aging was carried out at 110° C. for 1 hour and diluted with 10.6 g of AF-4 to obtain colorless and transparent dry polymer a to f solutions with a non-volatile content of 50%.

[0095] The mass average molecular weight (GPC method, standard polystyrene conversion) of each obtained dry polymer was 20,000 to 23,000.

[0096] [Table 1]

[0097]

[0098] Details of the monomers used are shown below.

[0099] Monomer (A): VMA (the carbon number o...

Embodiment 2～8、 comparative example 1～4

[0128] According to the formulation shown in Table 3, the inks of the respective examples and comparative examples were obtained in the same manner as in Example 1 above.

[0129] In Comparative Examples 2 and 3, a dry polymer a solution (50% solid content) and Solsperse 28000 (manufactured by The Lubrizol Corporation, 100% solid content) were used instead of the non-aqueous dispersion liquid, respectively.

[0130] [table 3]

[0131]

[0132] All of the obtained inks had a viscosity and a pigment particle diameter within an appropriate range for inkjet inks. The particle size of the ink was measured with a dynamic light scattering particle size distribution device LB-500 manufactured by Horiba Seisakusho. The viscosity of the ink is the viscosity when the shear stress is increased from 0 Pa to 10 Pa at a rate of 0.1 Pa / s at 23°C. The stress-controlled rheometer RS75 (cone angle 1°, diameter 60mm) manufactured by HAAKE Co., Ltd. To measure.

[0133]

[0134] Each ink ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

A non-aqueous pigment ink comprising a pigment, a non-aqueous solvent, and non-aqueous resin dispersion microparticles having a pigment dispersion capability, wherein the non-aqueous resin dispersion microparticles are an acrylic polymer comprising an alkyl (meth)acrylate unit having an alkyl group of 12 or more carbon atoms and a (meth)acrylate unit having a urethane group. The acrylic polymer is a copolymer of a monomer mixture comprising an alkyl (meth)acrylate (A) having an alkyl group of 12 or more carbon atoms and a reactive (meth)acrylate (B) having a functional group capable of reacting with an amino group, wherein the urethane group is introduced by a reaction between the functional group capable of reacting with an amino group, an amino alcohol and a polyvalent isocyanate compound, and the mass ratio within the acrylic polymer between the copolymer portion and the introduced urethane group portions is within a range from 60:40 to 99:1.

Description

technical field [0001] The present invention relates to a non-aqueous pigment ink, in particular to a non-aqueous pigment ink suitable for use in an inkjet recording system. Background technique [0002] The coloring material of the ink used in the inkjet recording system is roughly divided into the coloring material using the pigment and the coloring material using the dye. The ink using the pigment as the coloring material is excellent in light resistance, weather resistance and water resistance required for high-quality printing. , so there is an increasing trend. [0003] From the viewpoint of solvents, inks are broadly classified into aqueous type inks and non-aqueous type inks. Compared with water-based inks, non-aqueous inks that do not use water as an ink solvent, such as solvent-based inks based on volatile solvents and oil-based inks based on non-volatile solvents, have good drying properties and printability. Also excellent. [0004] In non-aqueous type inks, a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/00B41J2/01B41M5/00C08F220/36C08G18/62C09D11/30C09D11/322C09D11/326C09D11/36C09D11/38
CPCC09D11/36C09D11/322
Inventor 细谷铁男林大嗣渡边祥史安藤一行守永真利绘
Owner RISO KAGAKU CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com