Solvent-resistant polyvinyl butyral formula and preparation method thereof

A technology of polyvinyl butyral and polyvinyl alcohol, which is applied in the direction of coating, etc., can solve the problems of poor solvent resistance, and achieve the effects of good water resistance and ethanol resistance, good transparency, and excellent film-forming performance

Inactive Publication Date: 2017-07-14
CHENGDU YULONG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyvinyl butyral has the advantages of excellent softness and flexibility, non-toxicity, good film-forming performance, and good transparency. It is increasingly used as packaging in the coating industry, printing industry, and food industry. Films and coatings made of polyvinyl butyral have the problem of poor solvent resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Add 1 part of polyvinyl alcohol and 4 parts of pure water into a three-necked bottle, mix and heat at 90°C for 3 hours to obtain a primary polyethanol solution;

[0036] Add 0.05 parts of hydrogen peroxide, mix and react for 20 minutes, then cool to room temperature to obtain a polyvinyl alcohol solution;

[0037] Add 0.08 parts of n-butyraldehyde and 0.1 parts of concentrated hydrochloric acid to mix, react for 15 hours, adjust the pH value of the solution to 7, and obtain a polyvinyl butyral solution;

[0038] Add 0.01 part of formaldehyde aqueous solution and 0.005 part of melamine powder into another three-necked flask, adjust the pH value at 9 after mixing evenly, and heat the reaction at 90°C for 2 hours to obtain a melamine formal solution;

[0039] Add the above-mentioned melamine formal solution and 0.005 parts of p-toluenesulfonic acid (curing agent) into the polyvinyl butyral solution and mix evenly to prepare a mixture;

[0040] The above mixture was coated...

Embodiment 2

[0042] Add 1 part of polyvinyl alcohol and 4 parts of pure water into a three-necked bottle, mix and heat at 90°C for 2 hours to obtain a primary polyethanol solution;

[0043] Add 0.02 parts of hydrogen peroxide, mix and react for 20 minutes, then cool to room temperature to obtain a polyvinyl alcohol solution;

[0044] Add 0.08 parts of n-butyraldehyde and 0.1 parts of concentrated hydrochloric acid to mix, react for 15 hours, adjust the pH value of the solution to 7, and obtain a polyvinyl butyral solution;

[0045] Add 0.0035 parts of formaldehyde aqueous solution and 0.0015 parts of melamine powder into another three-necked flask, mix well, adjust the pH value at 9, and heat at 90°C for 2 hours to obtain a melamine formal solution;

[0046] Add the above-mentioned melamine formal solution and 0.005 parts of p-toluenesulfonic acid (curing agent) into the polyvinyl butyral solution and mix evenly to obtain a mixture; apply the above-mentioned mixture on a sheet-shaped subst...

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PUM

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Abstract

The invention discloses a solvent-resistant polyvinyl butyral formula, which is prepared from the following components in parts by weight: 900 to 1,100 parts of polyvinyl alcohol, 3,900 to 4,100 parts of pure water, 90 to 110 parts of concentrated hydrochloric acid, 40 to 60 parts of hydrogen peroxide, 70 to 90 parts of n-butyl alcohol, 9 to 11 parts of formaldehyde aqueous solution, 4 to 6 parts of melamine and 4 to 6 parts of p-toluenesulfonic acid. A preparation method of the solvent-resistant polyvinyl butyral formula comprises the following steps of preparation of a primary polyvinyl alcohol solution; preparation of a polyvinyl alcohol solution; preparation of a polyvinyl butyral solution; preparation of a melamine formaldehyde solution; preparation of a mixture; curing. The invention provides a novel solvent-resistant polyvinyl butyral formula and a preparation method thereof. Solvent-resistant polyvinyl butyral thin film plastic produced by the method is good in transparency, excellent in film-forming performance and good in water-resistant and ethanol-resistant performance.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a solvent-resistant polyvinyl butyral formula and a preparation method thereof. Background technique [0002] Polyvinyl butyral has the advantages of excellent softness and flexibility, non-toxicity, good film-forming performance, and good transparency. It is increasingly used as packaging in the coating industry, printing industry, and food industry. Films and coatings made of polyvinyl butyral have the problem of poor solvent resistance. Contents of the invention [0003] The object of the present invention is to provide a solvent-resistant polyvinyl butyral formula and a preparation method thereof in order to solve the above problems. . [0004] The present invention achieves the above object through the following technical solutions: [0005] A solvent-resistant polyvinyl butyral formula, the components and parts by weight are: [0006] Polyvinyl alcohol: 900-1100 parts...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D129/14C09D7/12C08F8/28C08F16/06
CPCC08F8/28C08L2201/10C09D129/14C08F16/06C08L61/28
Inventor 张路简帅叶锐刘铁
Owner CHENGDU YULONG CHEM
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