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A kind of polyvinyl alcohol sulfonate and its synthesis method, printing hydrophilic plate and application and printing plate

A technology of polyvinyl alcohol sulfonate and polyvinyl alcohol, which is applied in the printing plate field to achieve the effect of clean surface, good hydrophilic effect and high printing durability

Active Publication Date: 2019-08-30
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of how to improve the printing performance of the hydrophilic plate for printing, providing a polyvinyl alcohol sulfonate and its synthesis method, the hydrophilic plate for printing and its application and printing plate

Method used

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  • A kind of polyvinyl alcohol sulfonate and its synthesis method, printing hydrophilic plate and application and printing plate
  • A kind of polyvinyl alcohol sulfonate and its synthesis method, printing hydrophilic plate and application and printing plate
  • A kind of polyvinyl alcohol sulfonate and its synthesis method, printing hydrophilic plate and application and printing plate

Examples

Experimental program
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Effect test

Embodiment approach

[0030] According to a preferred embodiment of the present invention, the polyvinyl alcohol sulfonate can be synthesized by the following method: the polyvinyl alcohol sulfonate is an etherification product of polyvinyl alcohol and sultone.

[0031] Preferably, the sultone is selected from 1,3-propane sultone, 1,4-propane sultone, 1-methyl-1,3-propane sultone, 1,1- Dimethyl-1,3-propane sultone, 1-ethyl-1,3-propane sultone, 1,2-dimethyl-1,3-propane sultone, 1,3 -Dimethyl-1,3-propane sultone, 1-propenyl-1,3-propane sultone, 1-methyl-2-ethyl-1,3-propane sultone, 1-Methyl-1,4-butane sultone, 1-methyl-1,4-butane sultone, 1-propenyl-1,4-butane sultone and 1,5-pentane At least one of the sultones. More preferably, the sultone is selected from 1,3-propane sultone, 1-methyl-1,3-propane sultone, 1,1-dimethyl-1,3-propane sultone At least one of acid lactone, 1-ethyl-1,3-propane sultone, 1,2-dimethyl-1,3-propane sultone and 1,4-propane sultone kind.

[0032] In the present invention, ...

Embodiment 1

[0090] This example illustrates the preparation of polyvinyl alcohol sulfonates of the present invention.

[0091] Dissolve 22g of polyvinyl alcohol (Ningxia Dadi Chemical Co., Ltd. 1799) in 200mL of dimethylformamide (DMF), add 5.7g of sodium metal after chopping, and mix at room temperature for 0.5h;

[0092] Then dropwise add 1,3-propane sultone (Bailingwei Technology Co., Ltd.) in dimethylformamide solution (1,3-propane sultone 30.5g, dimethylformamide 300mL), polyvinyl alcohol: The weight ratio of 1,3-propane sultone is 0.72:1, after about 1 hour, the reaction mixture is obtained;

[0093] The reaction mixture was pre-reacted at room temperature for 1 hour, and then heated to 70°C for etherification reaction for 3 hours;

[0094] The product obtained after the etherification reaction is completed is spray-dried to obtain a solid powder.

[0095] The solid powder is subjected to infrared spectrum analysis, and the wave number in the spectrum is 3340cm -1 The place is th...

Embodiment 2

[0098] This example illustrates the preparation of polyvinyl alcohol sulfonates of the present invention.

[0099] 11g of polyvinyl alcohol (Ningxia Dadi Chemical Co., Ltd. 1899) was dissolved in 100mL of dioxane, and a total of 6g of sodium hydride (dispersed in mineral oil, wherein the concentration of sodium hydride was 60% by weight) was slowly added in three batches , mixed at room temperature for 1h;

[0100] Then a dioxane solution of 1-methyl-1,3-propane sultone (Sigma-Aldrich) was added dropwise (20.4 g of 1-methyl-1,3-propane sultone, dioxane 20mL), the weight ratio of polyvinyl alcohol:1-methyl-1,3-propane sultone is 0.54:1, after about 1h, the reaction mixture is obtained;

[0101] The reaction mixture was pre-reacted at room temperature for 1.2 hours, and then heated to 75°C for etherification reaction for 2 hours;

[0102] The product obtained after the etherification reaction is completed is spray-dried to obtain a solid powder.

[0103] The solid powder is s...

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Abstract

The invention relates to the field of printing plates and discloses a polyvinyl alcohol sulfonate and a synthesis method thereof, a hydrophilic plate used for printing, applications, and a printing plate. The polyvinyl alcohol sulfonate contains the chemical structure represented as the formula (I), wherein the sum of m and n is a positive integer of 400 to 5000, n / (m + n) is 0.05-1, x is a positive integer of 1 to 3, A1-A4 are independently hydrogen, C1-C6 alkyl groups or C1-C6 alkenyl groups, and M is Li, Na, K or NH4. The hydrophilic high-molecular compound can greatly improve hydrophilicity of the coating layer and improves printability of the hydrophilic plate.

Description

technical field [0001] The invention relates to the field of printing plates, in particular to a polyvinyl alcohol sulfonate and a synthesis method thereof, a hydrophilic plate for printing containing a hydrophilic layer formed by the polyvinyl alcohol sulfonate, and the hydrophilic plate is used in printing Plate application, and inkjet printing plate, photosensitive photoprinting plate and thermal printing plate formed from the hydrophilic plate. Background technique [0002] The printing industry is one of the industries that have an important impact on my country's national economy. The preparation of printing plates is one of the important technical steps. In modern printing plate preparation, a hydrophilic plate is usually prepared first, and then an inkjet printing plate, a photosensitive photoprinting plate or a thermal printing plate can be further prepared on the basis of the hydrophilic plate. Therefore, obtaining a high-quality hydrophilic version becomes a top...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F16/06C08F8/44B41N1/12B41N1/22G03F7/11
Inventor 沙栩正宋延林周海华秦明明
Owner INST OF CHEM CHINESE ACAD OF SCI
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