Casting polypropylene protection film pressure-sensitive adhesive, casting polypropylene protection film and their preparation methods

A technology of casting polypropylene and protective film, which is applied in the direction of polyurea/polyurethane adhesives, adhesives, ester copolymer adhesives, etc., which can solve the problem of decreased cohesion of pressure-sensitive adhesives, poor high-temperature resistance of pressure-sensitive adhesives, and aggravated degumming problems and other problems, to achieve the effect of increasing molecular attraction, not easy to degumming, and easy to control

Active Publication Date: 2013-12-25
广东保特信新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional acrylic pressure-sensitive adhesives are difficult to meet the performance requirements of cast polypropylene protective films. There are two main problems: first, the traditional acrylic pressure-sensitive adhesives have low adhesion, while cast polypr

Method used

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  • Casting polypropylene protection film pressure-sensitive adhesive, casting polypropylene protection film and their preparation methods
  • Casting polypropylene protection film pressure-sensitive adhesive, casting polypropylene protection film and their preparation methods
  • Casting polypropylene protection film pressure-sensitive adhesive, casting polypropylene protection film and their preparation methods

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1. Preparation of pressure-sensitive adhesive for cast polypropylene protective film

[0039] 1) Weigh each component according to the following formula:

[0040]

[0041]

[0042] 2) First feed nitrogen into the reactor, discharge the air in the reactor, then add 460Kg of ethyl acetate, and raise the temperature to 78°C-80°C;

[0043] 3) Add the polymerized monomer in step 1) into the feeding kettle, and stir evenly; then take 1.6Kg of benzoyl peroxide, dissolve it with 60.4Kg of ethyl acetate, add it to the feeding kettle, and stir evenly to obtain a mixed prepolymer Monomer 460Kg;

[0044] 4) Add 92Kg of mixed pre-polymerized monomers into the reactor, and keep it warm for 30-40 minutes at 78°C-80°C;

[0045] 5) Add the remaining 368Kg of mixed pre-polymerized monomers to the reaction kettle dropwise, and finish the dropwise addition in 3 to 3.5 hours, keep the temperature at 78°C to 80°C, and keep warm for 1 to 1.5 hours after the dropwise addition;

[0046...

Embodiment 2

[0056] 1. Preparation of pressure-sensitive adhesive for cast polypropylene protective film

[0057] 1) Weigh each component according to the following formula:

[0058]

[0059] 2) First feed nitrogen into the reactor, discharge the air in the reactor, then add 460Kg of ethyl acetate, and raise the temperature to 78°C-80°C;

[0060] 3) Add the polymerized monomer in step 1) into the feeding kettle, and stir evenly; then take 1.6Kg of benzoyl peroxide, dissolve it with 60.4Kg of ethyl acetate, add it to the feeding kettle, and stir evenly to obtain a mixed prepolymer Monomer 460Kg;

[0061] 4) Add 92Kg of mixed pre-polymerized monomers into the reactor, and keep it warm for 30-40 minutes at 78°C-80°C;

[0062] 5) Add the remaining 368Kg of mixed pre-polymerized monomers to the reaction kettle dropwise, and finish the dropwise addition in 3 to 3.5 hours, keep the temperature at 78°C to 80°C, and keep warm for 1 to 1.5 hours after the dropwise addition;

[0063] 6) Dissolv...

Embodiment 3

[0073] 1. Preparation of pressure-sensitive adhesive for cast polypropylene protective film

[0074] 1) Weigh each component according to the following formula:

[0075]

[0076] 2) First feed nitrogen into the reactor, discharge the air in the reactor, then add 460Kg of ethyl acetate, and raise the temperature to 78°C-80°C;

[0077] 3) Add the polymerized monomer in step 1) into the feeding kettle, and stir evenly; then take 1.6Kg of azobisisobutyronitrile, dissolve it with 60.4Kg of ethyl acetate, add it to the feeding kettle, and stir evenly to obtain a mixed pre- Polymer 460Kg;

[0078] 4) Add 92Kg of mixed pre-polymerized monomers into the reactor, and keep it warm for 30-40 minutes at 78°C-80°C;

[0079] 5) Add the remaining 368Kg of mixed pre-polymerized monomers to the reaction kettle dropwise, and finish the dropwise addition in 3 to 3.5 hours, keep the temperature at 78°C to 80°C, and keep warm for 1 to 1.5 hours after the dropwise addition;

[0080] 6) Dissolv...

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PUM

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Abstract

The invention discloses a casting polypropylene protection film pressure-sensitive adhesive and a casting polypropylene protection film with the pressure-sensitive adhesive. The casting polypropylene protection film pressure-sensitive adhesive comprises, by weight, 34.7-39.9% of a polymerization monomer, 0.1-0.3% of an initiator and 60.0-65.0% of a solvent, wherein the polymerization monomer comprises, by weight, 55.0-80.0% of an acrylate soft monomer, 10.0-30.0% of an acrylate hard monomer, 5.0-15.0% of a crosslinking monomer, 0.4-1.0% of an organosilicone monomer and 0.2-0.8% of an adhesion monomer. The casting polypropylene protection film pressure-sensitive adhesive has high adhesion and good temperature resistance and can resist the highest temperature of 180 DEG C.

Description

technical field [0001] The invention relates to a pressure-sensitive adhesive for protective film and the applied protective film, in particular to a pressure-sensitive adhesive for cast polypropylene protective film and the applied cast polypropylene protective film. Background technique [0002] Cast polypropylene (CPP) protective film is a non-stretched, non-oriented polypropylene protective film made by coating acrylate pressure-sensitive adhesive on a cast polypropylene film. Cast polypropylene protective film is mainly used in the protective film of photoelectric film, diffuser, light guide plate, film, prism sheet, etc., especially suitable for indium tin oxide conductive glass protective film coating, and used in the electronic manufacturing process. [0003] The cast polypropylene protective film needs to have good high temperature resistance, and requires no degumming. However, traditional acrylic pressure-sensitive adhesives are difficult to meet the performance ...

Claims

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Application Information

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IPC IPC(8): C09J133/08C09J175/04C09J7/02C08F220/18C08F220/14C08F220/28C08F230/08C08J7/04
Inventor 刘鹏伟
Owner 广东保特信新材料科技有限公司
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