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Novel water-based ink binder self-crosslinking emulsion for flexographic printing and preparation method thereof

A technology of ink binder and self-crosslinking emulsion, applied in ink, application, household appliances, etc., can solve the problems of inability to meet high-speed flexo printing technology, poor ink printing transferability, etc., and achieve excellent resolubility and printing transferability. , The effect of improving water resistance and high application value

Active Publication Date: 2019-08-16
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method belongs to the traditional acrylic emulsion prepared by using a small molecule emulsifier, and the corresponding ink has the disadvantage of poor printing transferability, which cannot meet the requirements of high-speed flexo printing technology, and solvents such as ethanol and isopropanol are used.

Method used

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  • Novel water-based ink binder self-crosslinking emulsion for flexographic printing and preparation method thereof
  • Novel water-based ink binder self-crosslinking emulsion for flexographic printing and preparation method thereof
  • Novel water-based ink binder self-crosslinking emulsion for flexographic printing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Dissolution of water-based resin: at a temperature of 80°C and a rotational speed of 300r / min, under a nitrogen atmosphere, add 140g of a water-based resin with a molecular weight of 7000, 656.3g of deionized water and 43.7g of ammonia water with a mass concentration of 25% in a 2L reactor. After stirring for 30-40 minutes, a pure and transparent water-based resin solution is obtained.

[0028] Preparation of monomer mixture: take 112.4g of styrene, 112.4g of methyl methacrylate, 87.6g of butyl acrylate, 87.6g of isooctyl acrylate, 8g of isobornyl acrylate, 8g of hydroxyethyl acrylate, and 12g of diacetone acrylamide and glycidyl methacrylate 2g, mixed evenly to obtain a yellow transparent solution.

[0029] The temperature is 86-88°C, the rotation speed is 300r / min, and under a nitrogen atmosphere, take 4wt% of the yellow transparent solution prepared above, add it to the dissolved water-based resin, and add 2g of sodium persulfate at the same time to obtain a blue see...

Embodiment 2

[0033] Dissolution of water-based resin: at a temperature of 80°C, a rotational speed of 300r / min, and a nitrogen atmosphere, 140g of a water-based resin with a molecular weight of 7000, 356.3g of deionized water, and 43.7g of ammonia water with a mass concentration of 25% were sequentially added to a 2L reactor. After stirring for 30-40 minutes, a pure and transparent water-based resin solution is obtained.

[0034] Preparation of monomer mixture: take 112.4g of styrene, 112.4g of methyl methacrylate, 87.6g of butyl acrylate, 87.6g of isooctyl acrylate, 8g of isobornyl acrylate, 8g of hydroxyethyl acrylate and 12g of diacetone acrylamide and glycidyl methacrylate 2g, mixed evenly to obtain a yellow transparent solution.

[0035] Preparation of pre-emulsion: Add 303.7 g of deionized water and 100 g of aqueous resin solution to the monomer mixture, and stir magnetically for 30 minutes to obtain a white pre-emulsion.

[0036] Add the remaining 440g of water-based resin solution...

Embodiment 3

[0039] Dissolution of water-based resin: at a temperature of 80°C, a rotational speed of 300r / min, and a nitrogen atmosphere, 140g of a water-based resin with a molecular weight of 7000, 356.3g of deionized water, and 43.7g of ammonia water with a mass concentration of 25% were sequentially added to a 2L reactor. After stirring for 30-40 minutes, a pure and transparent water-based resin solution is obtained.

[0040] Preparation of monomer mixture: take 112.4g of styrene, 112.4g of methyl methacrylate, 87.6g of butyl acrylate, 87.6g of isooctyl acrylate, 8g of isobornyl acrylate, 8g of hydroxyethyl acrylate and 12g of diacetone acrylamide and glycidyl methacrylate 2g, mixed evenly to obtain a yellow transparent solution

[0041] Preparation of fine emulsion: Add 303.7 g of deionized water, 100 g of aqueous resin solution, and 2 g of stearyl acrylate to the monomer mixture, and disperse for 10 minutes with a cell breaker to obtain a white fine emulsion.

[0042] Add the remain...

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Abstract

The invention discloses a novel water-based ink binder self-crosslinking emulsion for flexographic printing and a preparation method of the novel water-based ink binder self-crosslinking emulsion. Theself-crosslinking emulsion is a copolymer emulsion prepared from the following components through emulsion copolymerization, by weight, 30-70 parts of deionized water, 5-35 parts of water-based resin, 2-40 parts of alkyl acrylate monomer with the total carbon number being 4-12, 0-25 parts of methacrylate monomer with the total carbon number being 5-10, 0-25 parts of a styrene monomer, 0.2-5 partsof a hydroxyl (meth)acrylate monomer, 0.5-5 parts of a crosslinking monomer, 0.01-0.5 part of a metal ion crosslinking agent, 0.01-0.1 part of an initiator and 0-10 parts of a pH regulator. The water-based ink binder self-crosslinking emulsion can be subjected to a self-crosslinking reaction at room temperature, and has excellent resolubility, water resistance and printing transfer performance.

Description

technical field [0001] The invention relates to the technical field of water-based resin and its synthesis, in particular to a self-crosslinking emulsion of a novel water-based ink binder for flexographic printing and a preparation method thereof. Background technique [0002] In recent years, as air pollution and environmental protection have received more and more attention, the traditional packaging and printing industry with high VOC emissions is facing tremendous pressure for transformation, so the status of flexographic printing and water-based inks has gradually increased. As a water-based ink binder, acrylic emulsion is favored by the printing industry due to its advantages such as simple synthesis, high molecular weight, weather resistance, oil resistance and high gloss. However, traditional acrylic emulsions prepared using small molecule emulsifiers have some disadvantages, such as poor print transfer, insufficient adhesion to non-absorbent substrates, poor resolub...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/107C08F2/24C08F212/08C08F220/14C08F220/18C08F220/20C08F220/58C08F220/32
CPCC08F2/24C08F212/08C08F220/14C09D11/107C08F220/1804C08F220/1811C08F220/1808C08F220/20C08F220/58C08F220/325
Inventor 李效玉王海侨张泽琪刘亚男叶壮志赵鹏飞
Owner BEIJING UNIV OF CHEM TECH
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