Strippable protective polyvinyl butyral coating film and its production process

A technology of polyvinyl butyral and polyvinyl butyral, applied in the direction of coating, etc., can solve problems such as high requirements for use conditions and difficulty in unsealing, and achieve the effects of no temperature requirements, ensuring transparency, and improving hydrophobicity

Inactive Publication Date: 2002-10-16
JILIN AOJIE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention discloses a peelable polyvinyl butyral protective coating film and its production process, which solves the shortcomings of the existing protective film, such as difficulty in unsealing and high requirements for use conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take 20kg of ethyl acetate, 10kg of butyl acetate, 3kg of methanol, 5kg of n-butanol, 3kg of butanone and 46kg of ethanol and mix well, then add 8kg of polyvinyl butyral, disperse and swell under stirring conditions, and then heat up to Stir at 60°C for 1.5 hours at a constant temperature to fully dissolve the polyvinyl butyral and react its hydroxyl groups with methanol, etc. The above reaction solution was cooled to 30° C., and then 5% silicone oil, 3% Tween-80 and 1% dibutyl phthalate were sequentially added to make them evenly stirred to form a mixed solution. The mixed solution is sprayed (or brushed) onto the finish paint of protected objects such as automobiles, and after drying, the peelable protective film of the present invention is obtained.

Embodiment 2

[0025] Take 40kg of ethyl acetate, 22kg of butyl acetate, 8kg of methanol, 15kg of n-butanol, 3kg of butanone and 50kg of ethanol and mix them evenly, then add 12kg of polyvinyl butyral, disperse and swell under stirring, and then heat up to Stir at 70°C for 2.5 hours at a constant temperature to fully dissolve the polyvinyl butyral and react its hydroxyl groups with methanol, etc. The above reaction solution was cooled to 30° C., and then 5% of silicone oil, 5% of Tween-80 and 1% of dibutyl phthalate were sequentially added to make them evenly stirred to form a mixed solution. The mixed solution is sprayed (or brushed) onto the finish paint of protected objects such as automobiles, and after drying, the peelable protective film of the present invention is obtained.

Embodiment 3

[0027] Take 20kg of ethyl acetate, 20kg of butyl acetate, 25kg of n-butanol, 3kg of butanone and 50kg of ethanol, mix well, then add 18kg of polyvinyl butyral, disperse and swell under stirring conditions, and then heat up to 65°C. Stir at constant temperature for 2.5 hours to fully dissolve the polyvinyl butyral and make its hydroxyl group react with methanol and the like. The above reaction solution was cooled to 30° C., and then 7% of silicone oil, 5% of polyvinyl chloride castor oil and 1% of dibutyl phthalate were sequentially added to make them evenly stirred to form a mixed liquid. The mixed solution is sprayed (or brushed) onto the finish paint of protected objects such as automobiles, and after drying, the peelable protective film of the present invention is obtained.

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PUM

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Abstract

The strippable protective polyvinyl butyral coating is produced with polyvinyl butyral, ethanol, methanol, ethyl acetate, butyl acetate, n-butanol and butanone as material. Modified polyvinyl butylral liquid is painted to the surface of automobile, furniture, electric appliance and other objects to form protective coating at normal temperature. The coating is continuous, homogeneous, tough and transparent and can be stripped for recovery. The coating is sun-proof, water, oil, alkali, salt solution and dilute acid resistant, and has wide application and no environmental pollution.

Description

Technical field: [0001] The invention relates to a peelable protective film of an object topcoat, in particular discloses a peelable polyvinyl butyral protective paint film and provides its production process, belonging to the technical field of chemical protective paint films. Background technique: [0002] At present, for automobiles, electrical appliances, furniture and other items, especially the topcoat of high-end cars to avoid acid rain, smoke and dust, etc. and accidental abrasions, the protection methods that are often used include: [0003] 1. The surface of the object is coated with a protective paraffin layer, and its disadvantages are easy to crack and difficult to clean. [0004] 2. Cut the solid protective film according to the size required for object protection, and paste it on the surface of the object. Although the protective film has good protective performance, bubbles and wrinkles are easy to appear when the film is pasted, and the glue spots are diffic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/20C09D129/14
Inventor 庞志鹏马英杰徐杰
Owner JILIN AOJIE SCI & TECH
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