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Printing ink for offset lithography and preparation method thereof

A technology of offset printing ink and flat plate, applied in ink, household utensils, applications, etc., can solve the problems of light printing color, pigment dispersion defects, and affecting printing uniformity, and achieve good dispersion, fast drying speed, safety and non-toxicity cost effect

Inactive Publication Date: 2017-06-13
广东绿之彩科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the daily use of varnishes, there are obvious defects in the dispersibility of pigments, which will inevitably lead to too light printing color and seriously affect the uniformity of printing.

Method used

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  • Printing ink for offset lithography and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A flat offset printing ink, which is prepared from the following components in parts by weight: 30 parts of polyurethane, 20 parts of novolac epoxy acrylate, 4 parts of epoxy oil propionate, 5 parts of drier, 17 parts of pigment, 1 part of coupling agent, 0.6 part of antioxidant, 1.5 parts of dispersant and 6 parts of graphene.

[0021] In this embodiment, the graphene is at least one of spherical, flake, tubular, fibrous, helical, and three-dimensional, and its particle size ranges from 0.005 microns to 10000 microns. The novolac epoxy acrylate is bisphenol A modified novolak epoxy acrylate. The polyurethane is an epoxy-modified water-based polyurethane hybrid emulsion. The coupling agent is a silane coupling agent or an aluminate coupling agent. The antioxidant is nanometer copper / PTFE composite material. The drier is a mixed crystal or solid solution of the reaction product of ligand 3,7-diazabicyclo[3.3.1]nonane and metal chloride. Described dispersant is disper...

Embodiment 2

[0024] A flat offset printing ink, prepared from the following components by weight: 25 parts of polyurethane, 10 parts of phenolic epoxy acrylate, 6 parts of epoxy oil propionate, 4 parts of drier, 15 parts of pigment, 3 parts of coupling agent, 0.45 parts of antioxidant, 1 part of dispersant and 8 parts of graphene.

[0025] Further, it is prepared from the following components by weight: 20-30 parts of polyurethane, 20-25 parts of novolac epoxy acrylate, 5 parts of epoxy propionate, 4 parts of drier, 15-25 parts of pigment 20 parts, 2-3 parts of coupling agent, 0.3-0.6 parts of antioxidant, 1-2 parts of dispersant and 7 parts of graphene.

[0026] In this embodiment, the graphene is at least one of spherical, flake, tubular, fibrous, helical, and three-dimensional, and its particle size ranges from 0.005 microns to 10,000 microns. The novolac epoxy acrylate is bisphenol A modified novolak epoxy acrylate. The polyurethane is an epoxy-modified water-based polyurethane hybri...

Embodiment 3

[0029] A flat offset printing ink, which is prepared from the following components in parts by weight: 20 parts of polyurethane, 30 parts of novolac epoxy acrylate, 5 parts of epoxy oil propionate, 3 parts of drier, 20 parts of pigment, 2 parts of coupling agent, 0.3 parts of antioxidant, 2 parts of dispersant and 7 parts of graphene.

[0030] In this embodiment, the graphene is at least one of spherical, flake, tubular, fibrous, helical, and three-dimensional, and its particle size ranges from 0.005 microns to 10000 microns. The novolac epoxy acrylate is bisphenol A modified novolak epoxy acrylate. The polyurethane is an epoxy-modified water-based polyurethane hybrid emulsion. The coupling agent is a silane coupling agent or an aluminate coupling agent. The antioxidant is nanometer copper / PTFE composite material. The drier is a mixed crystal or solid solution of the reaction product of ligand 3,7-diazabicyclo[3.3.1]nonane and metal chloride. Described dispersant is dispersa...

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Abstract

The invention relates to printing ink for offset lithography and a preparation method thereof. The printing ink is prepared from the following components in parts by weight: 20-30 parts of polyurethane, 10-30 parts of phenolic epoxy acrylate, 4-6 parts of epoxidized oil propionate, 3-5 parts of a drier, 15-20 parts of a pigment, 1-3 parts of a coupling reagent, 0.3-0.6 part of an antioxidant, 1-2 parts of a dispersing agent and 6-8 parts of graphene. The printing ink has the characteristics of high tinting strength, good dispersibility, high drying speed, safety and no toxicity and low cost.

Description

technical field [0001] The invention relates to the technical field of packaging, in particular to a flat offset printing ink and a preparation method thereof. Background technique [0002] The manufacture of ink is a complex chemical engineering, and its materials involve chemical changes such as organic polymer synthesis and redox, diazotization, displacement reaction, and complexation reaction. At the same time, it involves mechanics, optics, color science, surface chemistry and other subjects. The first is the manufacture of various pigments and the manufacture of fillers. The second is the manufacture of various synthetic resins and the production of various types of linking materials, dissolving solid resins in vegetable oil, mineral oil, and solvent media. The third is the manufacture of ink. These three processes are interrelated, affect each other, and are indispensable. In the process of offset printing, the quality requirements of the ink are also high, not on...

Claims

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Application Information

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IPC IPC(8): C09D11/102C09D11/037
CPCC09D11/037C09D11/102
Inventor 曾家明曾志平吴志雄钟永红
Owner 广东绿之彩科技股份有限公司
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