Polyvinyl alcohol ester sulfonate, synthetic method thereof, hydrophilic plate for printing and application thereof, and printing plate

A technology of polyvinyl alcohol ester sulfonate and polyvinyl alcohol, which is applied in printing, printing plates, printing processes, etc., to achieve high printing durability, good hydrophilic effect, and clean and flawless surface

Active Publication Date: 2018-07-27
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 performance of the hydrophilic plate for printing, providing a polyvinyl alcohol ester sulfonate and its synthesis method, the hydrophilic plate for printing and its application and printing plate

Method used

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  • Polyvinyl alcohol ester sulfonate, synthetic method thereof, hydrophilic plate for printing and application thereof, and printing plate
  • Polyvinyl alcohol ester sulfonate, synthetic method thereof, hydrophilic plate for printing and application thereof, and printing plate
  • Polyvinyl alcohol ester sulfonate, synthetic method thereof, hydrophilic plate for printing and application thereof, and printing plate

Examples

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Embodiment approach

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

[0031] Preferably, the sulfopropionic anhydride is selected from 3-sulfopropionic anhydride, 4-methyl-3-sulfopropionic anhydride, 5-methyl-3-sulfopropionic anhydride, 4,4-dimethyl- 3-sulfopropionic anhydride, 5,5-dimethyl-3-sulfopropionic anhydride, 4,5-dimethyl-3-sulfopropionic anhydride, 4-propyl-3-sulfopropionic anhydride and 5 - at least one of isopropyl-3-sulfopropionic anhydride.

[0032] In the present invention, polyvinyl alcohol and sulfopropionic anhydride undergo esterification reaction in the presence of activator and solvent. The activator is preferably an alkaline compound, for example, the activator can be selected from tetramethylammonium hydroxide, lithium hydroxide, sodium hydroxide, potassiu...

Embodiment 1

[0094] This example illustrates the preparation of polyvinyl alcohol ester sulfonates of the present invention.

[0095] 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;

[0096] Then drop 3-sulfopropionic anhydride (structural formula such as formula (2), wherein A 1 、A 2 、A 3 and A 4 Both are H, x=1; purchased from Shanghai Sanmu Chemical Technology Co., Ltd.), dimethylformamide solution (3-sulfopropionic anhydride 34.03g, dimethylformamide 300mL), polyvinyl alcohol: 3-sulfo The weight ratio of propionic anhydride is 0.65:1, after about 1h, the reaction mixture is obtained;

[0097] The reaction mixture was pre-reacted at room temperature for 1 hour, and then heated to 70°C for etherification reaction for 3 hours;

[0098] The product obtained after the etherification reaction is completed is spray-dried to obtain a solid powder.

...

Embodiment 2

[0102] This example illustrates the preparation of polyvinyl alcohol ester sulfonates of the present invention.

[0103] 11g of polyvinyl alcohol (Ningxia Dadi Chemical Co., Ltd. 1899) was dissolved in 100mL of dioxane, and a total of 3.6g 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;

[0104] Then drop 4-methyl-3-sulfopropionic anhydride (structural formula such as formula (2), wherein A 1 is methyl, A 2 、A 3 and A 4 Both are H, x=1; purchased from Bailingwei Company) dioxane solution (4-methyl-3-sulfopropionic anhydride 22.52g, dioxane 20mL), polyvinyl alcohol: 4-methyl- The weight ratio of 3-sulfopropionic anhydride is 0.49:1, after about 1 hour, the reaction mixture is obtained;

[0105] 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;

[0106] The ...

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Abstract

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

Description

technical field [0001] The invention relates to the field of inkjet printing, in particular to a polyvinyl alcohol ester sulfonate and a synthesis method, a hydrophilic plate for printing containing a hydrophilic layer formed by the polyvinyl alcohol ester sulfonate, and the hydrophilic plate It is used in printing plates, as well as inkjet printing plates, photosensitive photoprinting plates and thermal printing plates 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F8/36C08F8/14C08F16/06C09D129/04B41N1/12B41N1/22
CPCB41N1/12B41N1/22C08F8/14C08F8/36C08F2800/20C09D129/04C08F16/06
Inventor 沙栩正宋延林杨明秦明明
Owner INST OF CHEM CHINESE ACAD OF SCI
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