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Polyvinyl alcohol ester benzene sulfonate and synthesis method thereof, hydrophilic plate used for printing, applications, and printing plate

A technology of polyvinyl alcohol ester benzene sulfonate and polyvinyl alcohol, which is applied in the field of photosensitive photoprinting plates and heat-sensitive printing plates, inkjet printing plates, and hydrophilic plates for printing, to achieve good hydrophilic effect and printing durability High, blemish-free surface cleanliness

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 printing performance of the hydrophilic plate for printing, providing a kind of polyvinyl alcohol ester benzene sulfonate and synthetic method, hydrophilic plate for printing and application and printing plate

Method used

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  • Polyvinyl alcohol ester benzene sulfonate and synthesis method thereof, hydrophilic plate used for printing, applications, and printing plate
  • Polyvinyl alcohol ester benzene sulfonate and synthesis method thereof, hydrophilic plate used for printing, applications, and printing plate
  • Polyvinyl alcohol ester benzene sulfonate and synthesis method thereof, hydrophilic plate used for printing, applications, and printing plate

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Embodiment approach

[0028] According to the present invention, a preferred embodiment, the polyvinyl alcohol ester benzene sulfonate can be synthesized by the following method: the polyvinyl alcohol ester benzene sulfonate is the esterification of polyvinyl alcohol and sulfobenzoic anhydride product.

[0029] Preferably, the sulfobenzoic anhydride is selected from 2-sulfobenzoic anhydride, 5-fluoro-2-sulfobenzoic anhydride, 5-iodo-2-sulfobenzoic anhydride, 5-methoxy- At least one of 2-sulfobenzoic anhydride, 5-ethoxy-2-sulfobenzoic anhydride, tetrabromo-2-sulfobenzoic anhydride, and tetraiodo-2-sulfobenzoic anhydride. It is preferably at least one selected from 2-sulfobenzoic anhydride, 5-fluoro-2-sulfobenzoic anhydride, and tetraiodo-2-sulfobenzoic anhydride.

[0030] In the present invention, polyvinyl alcohol and sulfobenzoic anhydride undergo esterification reaction in the presence of basic compound and solvent. The basic compound can be selected from at least one of tetramethylammonium hyd...

Embodiment 1

[0090] This example illustrates the preparation of polyvinyl alcohol ester benzene sulfonate of the present invention.

[0091] Dissolve 22g of polyvinyl alcohol (Ningxia Dadi Chemical Co., Ltd. 1799) in 200mL of dimethylformamide (DMF), add 5.75g of sodium metal after chopping, and mix at room temperature for 0.5h;

[0092] Then dropwise add the THF solution of 2-sulfobenzoic anhydride (Bailingwei Technology Co., Ltd.) (2-sulfobenzoic anhydride 46.04g, tetrahydrofuran 200mL), the weight ratio of polyvinyl alcohol:2-sulfobenzoic anhydride is 0.48 : 1, after about 1h, the reaction mixture was obtained;

[0093] The reaction mixture was reacted at room temperature for 1 h, and then heated to 70° C. for esterification for 3 h;

[0094] The product obtained after the esterification 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 absorption pe...

Embodiment 2

[0098] This example illustrates the preparation of polyvinyl alcohol ester benzene sulfonate of the present invention.

[0099] 11g of polyvinyl alcohol (Ningxia Dadi Chemical Co., Ltd. 1899) was dissolved in 100mL of dioxane, slowly added in three batches of 3.6g of sodium hydride (dispersed in mineral oil, the concentration of sodium hydride was 60% by weight), at room temperature Mix for 1h;

[0100] Then a dioxane solution of 5-fluoro-2-sulfobenzoic anhydride (Sigma-Aldrich) was added dropwise (5-fluoro-2-sulfobenzoic anhydride 30.33 g, dioxane 20 mL), polyvinyl alcohol : The weight ratio of 5-fluoro-2-sulfobenzoic anhydride is 0.36:1, after about 1 hour, 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 esterification reaction for 2 hours;

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

[0103] The solid pow...

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Abstract

The invention relates to the field of ink jet printing, and discloses a polyvinyl alcohol ester benzene sulfonate and a synthesis method thereof, a hydrophilic plate used for printing, applications, and a printing plate. The polyvinyl alcohol ester benzene 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, A1-A4 are independently hydrogen, C1-C6 alkoxyl groups or halogen elements, 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 ester benzene sulfonate and a synthesis method, a hydrophilic plate for printing containing a hydrophilic layer formed by the polyvinyl alcohol ester benzene sulfonate, the hydrophilic The plate is used in printing plates, and ink-jet printing plates, photosensitive photoprinting plates, and thermosensitive 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...

Claims

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Application Information

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IPC IPC(8): C08F16/06C08F8/36C09D129/04G03F7/11B41N1/12
CPCB41N1/12C08F8/36C09D129/04G03F7/11C08F16/06
Inventor 沙栩正宋延林周海华刘云霞
Owner INST OF CHEM CHINESE ACAD OF SCI
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