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A kind of polyester film protective film and preparation method thereof

A technology of polyester film and protective film, which is applied in the direction of pressure-sensitive film/sheet, film/sheet-shaped adhesive, ester copolymer adhesive, etc., which can solve the problems of poor peeling performance and increase surface wetting ability, improve heat resistance, and increase rigidity

Active Publication Date: 2022-05-17
HEFEI LUCKY SCI & TECH IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a polyester film protective film and a preparation method thereof, which is coated with a layer of pressure-sensitive adhesive on the surface of the polyester film, the pressure-sensitive adhesive has excellent heat resistance, after it is attached to the polarizer, Placed at a temperature of 90°C for 500 hours, after tearing off the protective film, observed under a three-wavelength light, there is no residual glue on the surface of the polarizer, which overcomes the defect of poor peeling performance in the prior art

Method used

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  • A kind of polyester film protective film and preparation method thereof
  • A kind of polyester film protective film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weigh 2g maleimide, 20g vinyl acetate, 20g ethyl acrylate, 20g butyl acrylate, 20g isooctyl acrylate, 2g acrylic acid, 4g methacrylic acid, 3g hydroxyethyl acrylate, 5g hydroxypropyl acrylate, 4g hydroxypropyl methacrylate, react at 75 ° C for 3 hours, and then cool the synthetic resin to 50 ° C, continue to stir and keep warm for 1.5 hours after the material is discharged, that is, acrylate resin.

[0033] Weigh the above 20g acrylate resin and 0.01g 90076-65-6, 0.2g N3390, 0.4g BYK358N, 0.2g Norcht FM5400, 0.2g Ukyuka 385S, 20g ethyl acetate, mixed evenly to obtain a pressure-sensitive adhesive coating solution, the coating liquid is coated on the surface of optical grade polyester film, after drying, the release film is coated at 40 °C for 24 hours to obtain a polyester film protective film.

[0034] The performance test results are shown in Table 1.

Embodiment 2

[0036]Weigh 3.6g acrylamide, 6g maleimide, 2.4g N-vinylcarbazole, 30g methyl methacrylate, 10g ethyl acrylate, 24g butyl acrylate, 14g isooctyl acrylate, 10g hydroxyethyl acrylate, react at 78 °C for 2.5 hours, and then cool the synthetic resin to 50 °C, continue to stir and keep warm for 1 hour, that is, acrylate resin.

[0037] Weigh the above 40g acrylate resin and 0.06g 90076-65-6, 0.04g 4039-32-1, 0.7g acetylacetonite aluminum, 0.2g BYK358N, 0.4g Norcht FM5400, 10g ethyl acetate, 10g acetone, 20g butanone, mixed evenly to obtain a pressure-sensitive adhesive coating liquid, the coating solution is coated on the surface of optical grade polyester film, after drying, the release film is matured at 40 °C for 24 hours to obtain a polyester film protective film.

[0038] The performance test results are shown in Table 1.

Embodiment 3

[0040] Weigh 6.3g maleimide, 0.7g N-vinylcarbazole, 10g vinyl acetate, 25g methyl methacrylate, 25g ethyl acrylate, 18g butyl acrylate, 10g n-isoester acrylate, 7g methacrylic acid, 5g hydroxyethyl acrylate, 3g hydroxypropyl acrylate, react at 80 °C for 2 hours, and then cool the synthetic resin to 45 °C, continue to stir and keep heat for 1 hour after the discharge, that is, acrylate resin.

[0041] Weigh the above 25g acrylate resin and 0.01g 90076-65-6, 0.04g 4039-32-1, 0.3g N3390, 0.4g basf HI 100, 0.3g acetylacetonate aluminum, 0.2g zinc acetylacetonate, 0.1g Norcht FM5400, 0.3g UK Yuka 385S, 20g ethyl acetate, 10g butyl acetate, 15g acetone, 10g cyclohexanone, 10g toluene, After mixing evenly, a pressure-sensitive adhesive coating solution is obtained, the coating solution is coated on the surface of the optical grade polyester film, and after drying, the clutch film is matured for 24 hours at 40 °C to obtain a polyester film protective film.

[0042] The performance test re...

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Abstract

The invention relates to a polyester film protective film and a preparation method thereof. The protective film comprises a polyester film and a pressure-sensitive adhesive layer coated on the surface of the polyester film. The components of the pressure-sensitive adhesive layer are as follows: The parts by mass are: 20-40 acrylate resin; 0.01-0.1 antistatic agent; 0.2-1.2 crosslinking agent; 0.1-0.8 leveling agent; 20-80 solvent; Acrylate hard monomer, acrylate soft monomer and acrylate crosslinking monomer. The heat-resistant monomer used in the present invention introduces a ring-shaped rigid group, and can form intermolecular hydrogen bonds, which improves the degree of physical cross-linking. Finally, after cross-linking, the formed spatial network structure endows the pressure-sensitive adhesive layer with good heat resistance performance. After attaching the polarizer, place it at a temperature of 90°C for 500 hours. After tearing off the protective film, observe it under a three-wavelength light. There is no glue residue on the surface of the polarizer.

Description

Technical field [0001] The present invention relates to the field of film technology, in particular to a polyester film protective film. Background [0002] When manufacturing and transporting optical components such as polarizers of liquid crystal displays, in order to prevent contamination and damage to the surface of the polarizers, a protective film is attached to its outermost layer. As the environment in which polarizers are used become more and more demanding, the requirements for protective films are also getting higher and higher, especially the demand for high-temperature protective films is increasing. In order to avoid the protective film in the process of use in the high temperature environment, when peeling off from the surface of the polarizer, leaving residual adhesive pollution polarizer, the protective film is required to have excellent high temperature resistance performance to solve the problem of residual glue and pollution polarizer when the protective film...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/38C09J7/25C09J133/08C09J133/12C09J9/02C09J11/06C08F220/18C08F218/08C08F222/40C08F220/06C08F220/20
CPCC09J7/385C09J7/255C09J133/066C09J133/26C09J9/02C08F218/08C08F220/18C09J2467/006C09J2433/00C09J2301/302
Inventor 牛正富周守发安佳丽胡程鹏祝亮
Owner HEFEI LUCKY SCI & TECH IND