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A kind of printing plate protective coating and preparation method thereof

A protective coating and printing plate technology, applied in the field of printing plate protective coating and its preparation, can solve the problems of printing plates not having comprehensive properties, achieve good chemical inertness and thermal stability, highlight weather resistance, and improve strength Effect

Active Publication Date: 2022-04-19
安徽强邦新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Printing plates need to be reused and are in direct contact with inks containing a large amount of organic solvents during work. Therefore, printing plates are required to have excellent hardness, abrasion resistance, solvent resistance and acid and alkali corrosion resistance. , printing plates do not have good overall performance, therefore, the invention provides a protective coating for printing plates and a preparation method thereof

Method used

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  • A kind of printing plate protective coating and preparation method thereof
  • A kind of printing plate protective coating and preparation method thereof
  • A kind of printing plate protective coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The modified acrylic resin is prepared by the following steps:

[0037] Step A1: Take a three-mouth flask with a stirrer and a thermometer, add acrylic acid to the three-mouth flask, and then add dichlorosulfoxide to the three-mouth flask, control the stirring speed of 500r / min, the reaction temperature is 55 °C, the reaction is 40min, and the intermediate 1 is obtained, wherein the dosage ratio of acrylic acid and dichlorosulfoxide is 1mol: 1.15mol;

[0038] Step A2: Take hexafluoroisopropanol and tetrahydrofuran mixed and added to the three-mouth flask, add an aqueous sodium hydroxide solution to the three-mouth flask, adjust the pH of the mixture to 10, at a stirring speed of 120r / min, the water bath temperature is 45 °C, use a drip funnel to add the intermediate to the three-mouth flask dropwise, after the drop addition is completed, the insulation reaction is 1h, the reaction mixture is washed with deionized water, standing and stratifying, the layer of oily liquid is ...

Embodiment 2

[0041] The modified acrylic resin is prepared by the following steps:

[0042] Step A1: Take a three-mouth flask with a stirrer and a thermometer, add acrylic acid to the three-mouth flask, and then add dichlorosulfoxide to the three-mouth flask, control the stirring speed of 600r / min, the reaction temperature is 56 °C, the reaction is 45min, and the intermediate is obtained 1, wherein the dosage ratio of acrylic acid and dichlorosulfoxide is 1mol: 1.15mol;

[0043] Step A2: Take hexafluoroisopropanol and tetrahydrofuran mixed and added to the three flasks, add aqueous sodium hydroxide solution to the three flasks, adjust the pH of the mixture to 10, at a stirring speed of 130r / min, the water bath temperature is 48 °C, use a drip funnel to add intermediates to the three flasks dropwise, after the drip is completed, Insulation reaction 1.2h, the reaction mixture was washed with deionized water, standing and layered, the layer of oily liquid was removed, and intermediate 2 was prepa...

Embodiment 3

[0046] The modified acrylic resin is prepared by the following steps:

[0047] Step A1: Take a three-mouth flask with an agitator and a thermometer, add acrylic acid to the three-mouth flask, and then add dichlorosulfoxide to the three-mouth flask, control the stirring speed of 700r / min, the reaction temperature is 58 °C, the reaction is 50min, and the intermediate is obtained 1, wherein the dosage ratio of acrylic acid and dichlorosulfoxide is 1mol: 1.15mol;

[0048] Step A2: Take hexafluoroisopropanol and tetrahydrofuran mixed and add to the three-mouth flask, add an aqueous sodium hydroxide solution to the three-mouth flask, adjust the pH of the mixture to 10, at a stirring speed of 150r / min, the water bath temperature is 50 °C, use a drip funnel to add intermediates to the three-mouth flask dropwise, and after the drop is completed, The insulation reaction was 1.5h, the reaction mixture was washed with deionized water, standing and layered, the layer of oily liquid was removed...

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Abstract

The invention discloses a printing plate protective coating and a preparation method thereof, which belongs to the field of printing technology and solves the problem that the printing plate does not have good comprehensive performance in the prior art. The protective coating includes the following raw materials in parts by weight: modified acrylic resin The above-mentioned Stirring of raw materials, vacuum degassing, ultrasonic dispersion to obtain a composite coating, then coating the composite coating on the surface of the printing plate, and drying to obtain a protective coating; the modified acrylic resin prepared by the present invention, the fluorine atom of the side chain will The main chain is separated from the outside world to avoid direct interaction with the outside world and improve the corrosion resistance and solvent resistance of the resin. Nano-silica is modified by a silane coupling agent to improve compatibility and evenly distributed in the coating to improve coating Layer hardness and wear resistance.

Description

Technical field [0001] The present invention belongs to the field of printing technology, specifically, relates to a printed plate protective coating and a method of preparation thereof. Background [0002] The CTP direct plate making machine is similar to the structural principle of the image liner. The plate making equipment is directly controlled by a computer, scanned and imaged with a laser, and then directly printed by developing and fixing the printing plate that can be directly printed on the machine. Computer direct plate making is the use of digital workflow, directly convert text and images into numbers, directly generate printing plates, eliminating the need for film material imposition and printing process. The printed plate that is directly imaged by the exposure of infrared laser scanning is one of the CTP plates, called thermal CTP plates. This thermal plate typically comprises a hydrophilic carrier and a thermal polymer coating, the thermal polymer coating can b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/16C09D143/04C09D7/62C09D5/08C08F220/24C08F230/08
CPCC09D143/04C09D7/62C09D5/08C08F220/24C08F230/085C08K2201/011C08K9/06C08K3/36
Inventor 孙长义郭俊成李长华
Owner 安徽强邦新材料股份有限公司
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