A kind of high-strength re-peelable pressure-sensitive adhesive for window film and preparation method thereof

A re-peelable, pressure-sensitive adhesive technology, applied in the direction of adhesives, adhesive types, film/sheet adhesives, etc., can solve the problems of high production cost, low cost, and high adhesive strength, and achieve good reliability Excellent detachability, re-peelability, and high strength

Active Publication Date: 2011-11-30
上海绘兰材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, there are many patent reports on the production of functional window films, but there are few studies on pressure-sensitive adhesives for window films
The Chinese patent application with application number 97117930.1 discloses a peelable car film. Although the pressure-sensitive adhesive used in this product has re-peelability, it has problems such as low adhesive strength, high production cost, and complicated construction technology.
The Chinese patent application with application number 200810079298.4 discloses a window film. Although the adhesive product has high adhesive strength and low cost, the pressure-sensitive adhesive product has no re-peelability

Method used

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  • A kind of high-strength re-peelable pressure-sensitive adhesive for window film and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This embodiment provides a high-strength peelable pressure-sensitive adhesive for window films, and its preparation method is as follows:

[0036] 1), 3 kg of 2-ethylhexyl acrylate, 4 kg of n-butyl acrylate, 2 kg of methyl methacrylate, 0.5 kg of 2-hydroxyethyl acrylate, 0.7 kg of maleic acid, 1 kg of propylene acrylate Ester, 0.5 kg of N-vinylpyrrolidone, 1 kg of vinyl acetate, 7 kg of ethyl acetate, and 0.03 kg of dibenzoyl peroxide were added to the reaction kettle, and heated to 72°C for 30 minutes;

[0037] 2), 6 kg of 2-ethylhexyl acrylate, 8 kg of n-butyl acrylate, 4 kg of methyl methacrylate, 0.8 kg of 2-hydroxyethyl acrylate, 0.6 kg of maleic acid, 0.4 kg of glycidyl acrylate Ester, 0.7 kg of N-vinylpyrrolidone, 0.9 kg of vinyl acetate, 14 kg of ethyl acetate, and 0.05 kg of dibenzoyl peroxide are mixed uniformly, and then added dropwise to the above reaction kettle within 2 hours. After the addition is complete, heat to 65°C and stir for 3 hours;

[0038] 3). Add 0...

Embodiment 2

[0040] 1), 4 kg of 2-ethylhexyl acrylate, 3 kg of isobutyl methacrylate, 2 kg of methyl methacrylate, 0.6 kg of 2-hydroxyethyl methacrylate, 0.7 kg of acrylic acid, 1 kg of methyl Glycidyl acrylate, 0.5 kg of N-vinylpyrrolidone, 1 kg of vinyl acetate, 7 kg of ethyl acetate and 0.03 kg of azobisisobutyronitrile were added to the reaction kettle, heated to 70°C for 20 minutes;

[0041] 2), 8 kg of 2-ethylhexyl acrylate, 6 kg of isobutyl methacrylate, 4 kg of methyl methacrylate, 0.8 kg of 2-hydroxyethyl methacrylate, 0.5 kg of acrylic acid, 0.5 kg of methyl Glycidyl acrylate, 0.4 kilograms of N-vinylpyrrolidone, 0.8 kilograms of vinyl acetate, 14 kilograms of ethyl acetate and 0.05 kilograms of dibenzoyl peroxide are mixed uniformly, and added to the above reaction in a dropwise manner within 2 hours In the kettle, after the dripping is completed, heat to 70°C and stir for 3 hours;

[0042] 3) Add 0.08 kg of hexamethylene diisocyanate and 7 kg of ethyl acetate into the reaction kett...

Embodiment 3

[0044] 1), 4 kg of n-octyl acrylate, 3 kg of n-butyl acrylate, 2 kg of methyl methacrylate, 0.3 kg of 2-hydroxyethyl methacrylate, 0.3 kg of 2-hydroxyethyl acrylate, 0.4 kg of acrylic acid, 0.2 kg of methacrylic acid, 0.5 kg of glycidyl methacrylate, 0.5 kg of glycidyl acrylate, 0.5 kg of N-vinylpyrrolidone, 1 kg of vinyl acetate, 7 kg of ethyl acetate and 0.03 kg of azobisisobutyronitrile Add to the reaction kettle, heat to 75°C for 20 minutes;

[0045] 2), 8 kg n-octyl acrylate, 6 kg n-butyl acrylate, 0.4 kg 2-hydroxyethyl methacrylate, 0.2 kg 2-hydroxyethyl acrylate, 0.6 kg acrylic acid, 0.6 kg methacrylic acid, 0.6 kg Glycidyl methacrylate, 0.7 kilograms of glycidyl acrylate, 0.5 kilograms of N-vinylpyrrolidone, 1 kilogram of vinyl acetate, 14 kilograms of ethyl acetate and 0.05 kilograms of dibenzoyl peroxide are mixed uniformly and added dropwise Add dropwise to the above reaction kettle within 2 hours. After the dropwise addition is completed, heat to 68°C and stir for 3 ...

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Abstract

The invention relates to a high-strength repeelable pressure-sensitive adhesive for a window film and a preparation method thereof. The high-strength repeelable pressure-sensitive adhesive for the window film consists of the following raw materials in part by weight: 35 to 94.9 parts of (methyl) acrylate monomer which has glass transition temperature of between -45 and 10 DEG C and is used for preparing homopolymers, 5 to 50 parts of (methyl) acrylate monomer which has glass transition temperature of between -90 and -50 DEG C and is used for preparing homopolymers, 5 to 20 parts of acrylic monomer with a functional group, 5 to 20 parts of vinyl monomers with functional groups, 0.01 to 10 parts of cross-linking agent, 0.01 to 10 parts of initiator, and 70 to 100 parts of solvent. The pressure-sensitive adhesive for the window film has the characteristics of high strength, good repeeling performance and the like. In the process of peeling the window film coated with the pressure-sensitive adhesive, the residual adhesive cannot be left on the protected surface, so the pressure-sensitive adhesive has better peelability. The invention also provides a preparation method for the pressure-sensitive adhesive.

Description

Technical field [0001] The invention relates to a high-strength peelable pressure-sensitive adhesive for window films and a preparation method thereof. Background technique [0002] Window film, also called peeling film, can be divided into three categories: automotive film, architectural film and security film according to its purpose. It is widely used on the glass of automobiles, buildings, banks and store counters. [0003] Window film has the advantages of ultraviolet ray isolation, explosion-proof, heat insulation and energy saving, privacy protection and durability. With the impact of global warming, heat-insulating and environmentally-friendly window films have gradually been recognized by more people. In terms of environmental protection and energy conservation, the window film industry occupies a huge market share. [0004] At present, there are many patent reports on the production of functional window films, but there are few studies on pressure-sensitive adhesives for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/04C09J133/08C09J7/02C08F220/18C03C23/00
Inventor 金青松金长松王清李昕张宪峰谭文倩金成日
Owner 上海绘兰材料科技有限公司
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