Water-based printing ink with strong shallow screen transferability, and preparation method thereof

A printing ink and transfer technology, which is applied in the field of water-based printing ink and its preparation, can solve the problems that water-based printing ink cannot meet the needs of consumers, and achieve the effects of improving the transfer performance of shallow nets, uniform coloring, and easy availability of raw materials

Inactive Publication Date: 2019-05-21
陈丽娟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on the problem that the current water-based printing ink cannot meet the needs of consumers in terms of shallow net transferability, the present invention provides a water-based printing ink with strong shallow net transferability and a preparation method thereof

Method used

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  • Water-based printing ink with strong shallow screen transferability, and preparation method thereof

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preparation example Construction

[0049] The present application also provides a preparation method for the above-mentioned water-based printing ink with strong shallow net transferability, comprising the following steps:

[0050] (1) Add water-based polyurethane resin and modified acrylic resin to the mixer, and stir at a rate of 400-600 rpm at a temperature of 50-60°C for 30-50 minutes to obtain a premix;

[0051] (2) Put the water-based wax slurry and inorganic pigment into the mixer for mixing and stirring. The stirring temperature is 35-40°C and the stirring rate is 500-600 rpm. After stirring for 20-30 minutes, the mixed slurry is ground by a three-roller machine , and grind to a particle size of less than 10 μm to obtain a mixed color paste;

[0052](3) Put the pre-mixture obtained in step (1) and the mixed color paste obtained in step (2) into the reactor together, and then add leveling agent and defoamer to the reactor at a speed of 1000 to 1200 rpm Stir at a high speed for 60-80 minutes to obtain ro...

Embodiment 1

[0058] Preparation of modified acrylic resin: In a reactor, mix dimethylaminoethyl methacrylate, methyl acrylate, and styrene in a molar ratio of 6:3:1, heat the reactor, and wait until the temperature reaches 65°C Insulate and stir for 35 minutes, then raise the temperature to 85°C, add an appropriate amount of initiator, continue to insulate and stir at this temperature for 55 minutes, adjust the pH value of the solution to 7.5 after the heat preservation is completed, then filter and dry to obtain a modified acrylic resin.

[0059] Prepare raw materials according to the following weight percentages:

[0060] Water-based polyurethane resin 30%

[0061] Modified acrylic resin 15%

[0062] Water-based wax paste 3%

[0063] Inorganic pigment 2.5%

[0064] Leveling agent 0.5%

[0065] Defoamer 0.5%

[0066] Deionized water balance;

[0067] Preparation of water-based printing ink with strong shallow web transfer:

[0068] (1) Add water-based polyurethane resin and modifie...

Embodiment 2

[0073] Preparation of modified acrylic resin: In a reactor, mix dimethylaminoethyl methacrylate, methyl acrylate, and styrene in a molar ratio of 6:3:1, heat the reactor until the temperature reaches 67.5°C Insulate and stir for 40 minutes, then raise the temperature to 86.5°C, add an appropriate amount of initiator, continue to insulate and stir at this temperature for 60 minutes, adjust the pH value of the solution to 8.0 after the heat preservation is completed, then filter and dry to obtain a modified acrylic resin.

[0074] Prepare raw materials according to the following weight percentages:

[0075] Water-based polyurethane resin 40%

[0076] Modified acrylic resin 20%

[0077] Water-based wax paste 4%

[0078] Inorganic pigment 3.5%

[0079] Leveling agent 1%

[0080] Defoamer 1%

[0081] Deionized water balance;

[0082] Preparation of water-based printing ink with strong shallow web transfer:

[0083] (1) Add water-based polyurethane resin and modified acrylic ...

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Abstract

The invention discloses a water-based printing ink with a strong shallow screen transferability, and a preparation method thereof. Raw materials of the water-based printing ink comprise a waterborne polyurethane resin, a modified acrylic resin, an aqueous wax paste, an inorganic pigment, a leveling agent, an antifoaming agent and deionized water. The invention also discloses the corresponding preparation method. The preparation method comprises the following steps: adding the waterborne polyurethane resin and the modified acrylic resin into a mixer to prepare a pre-mixture, preparing a mixed color paste from the aqueous wax paste and the inorganic pigment, stirring the pre-mixture and the mixed color paste with the leveling agent and the antifoaming gent in a reactor, and performing dispersing and grinding to obtain the finished ink. The water-based printing ink with the strong shallow screen transferability has an excellent shallow screen transfer performance. The added modified propionic carboxylic acid resin prepared by a specific process and the waterborne polyurethane resin and the inorganic pigment in the ink form a stable dispersion system, so the printing ink has a suitableviscosity and is uniform in coloring.

Description

technical field [0001] The invention relates to the technical field of printing inks, in particular to a water-based printing ink with strong shallow screen transferability and a preparation method thereof. Background technique [0002] With the greenhouse effect and global warming, the pressure on human beings to protect the environment is increasing. Volatile organic compounds (VOC) and organic solvent emissions are one of the important sources of environmental problems. The state has issued a series of policies and regulations to control the pollution disposal process of the chemical industry and prevent pollution from occurring. At the present stage, ordinary solvent-based inks will emit a large amount of organic solvents during production and printing, and most printing and packaging companies do not have the conditions for the recycling and reuse of organic solvents. At this time, water is used instead of organic solvents for ink production and printing, which can sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/102C09D11/107
Inventor 陈丽娟
Owner 陈丽娟
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