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UV photo-curing adhesive for lamination of polarizer sheet protective membrane

A protective film layer and photocuring technology, applied in adhesives, non-polymer organic compound adhesives, etc., can solve problems such as the difficulty of zinc ion concentration control, improve yield, shorten drying channels, and improve production efficiency Effect

Inactive Publication Date: 2005-01-19
CHINA LUCKY FILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, U.S. Patent No. 4,774,141 discloses a polarizer colored with azo dyes. One side of the polyvinyl alcohol polarizing film is bonded with a transparent polysulfone conductive film. The lamination of the polysulfone conductive film and the polyvinyl alcohol polarizing film is The type of mixture can be heat curing type, radiation curing type, pressure sensitive adhesive type and X-ray or electron beam curing type such as PVA adhesive, polyurethane resin, epoxy resin, silicone resin and synthetic rubber adhesive, UV The composition of cured resin adhesive can be made up of urethane acrylate, epoxy acrylate and photoinitiator, but the TAC protective film bonded on the other side of the polarizing film still uses PVA adhesive; U.S. Patent US 5,738,918 A polymer polyester liquid crystal material colored with a dichroic dye is disclosed. The patent introduces that the type of lamination adhesive can be heat-cured, radiation-cured, pressure-sensitive adhesive and X-ray or electron beam-cured. Adhesives, but there is no further description of radiation-cured lamination adhesives; U.S. Patent US2003001988 discloses that the inner protective film in an iodine-colored polarizer can be a film product of TAC or polyester, polyimide and polyolefin resin The adhesives suitable for pasting are mainly water-soluble adhesives such as polyvinyl alcohol adhesives, acrylic adhesives, and polyester isocyanate adhesives; U.S. Patent US2003030906 discloses that PVA resin in iodine-colored polarizers can It is a saponified polyvinyl acetate (polyvinyl alcohol) or a copolymer of vinyl acetate and other copolymerizable monomers. In order to avoid the difficulty of controlling the concentration of zinc ions in the coloring solution, zinc salt is added to the transparent PVA adhesive Among them, the inner protective film is TAC, and it must be dried at 70°C when bonding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Recipe 1:

[0037] Acid-modified epoxy acrylate (Sartomer CN118) 18

[0038] Aliphatic Urethane Acrylate (Changxing Chemical Industry Co., Ltd. 6143A-80) 25

[0039] Ethoxy nonylphenol acrylate (Sartomer CD612) 10

[0040] Monofunctional Acrylate (Sartomer CD9050) 12

[0041] Trifunctional acid ester (Sartomer CD9051) 14

[0042] Butylene Glycol Diacrylate 15

[0043] Irgacure 184 (CIBA Corporation) 2

[0044] Irgacure 907 (CIBA Corporation) 1

[0045] Reactive tertiary amine compound (UCB P115) 2

[0046] Trimethylolpropane 0.7

[0047] Solvent-based defoamer (Deqian Enterprise Co., Ltd. 3100) 0.3

[0048] Add solid photoinitiator into stainless steel barrel, add active monomer, stir and dissolve, add prepolymer and auxiliary, stir and dissolve, add defoamer, mix and stir to obtain UV curing adhesive, which is ready for use.

[0049] The PVA film prepared by casting was equilibrated in an environment with a relative humidity of about 80%, and then invaded into...

Embodiment 2

[0057] The PVA polarizer functional film with polarizing effect is made by the same method as in Example 1, and the TAC film is used as an inner protective film.

[0058] Recipe 2:

[0059] Aliphatic urethane acrylate (Sartomer CN962) 35

[0060] Polyol modified epoxy acrylate (EA205 of Shaanxi Jinling Light Curing Material Co., Ltd.) 25

[0061]Phenoxyethyl acrylate (Sartomer SR339) 10

[0062] Monofunctional Acrylate (Sartomer CD9050) 12

[0063] Polyethylene glycol (600) diacrylate (Sartomer SR6 10

[0064] Irgacure 184 (CIBA Corporation) 2

[0065] Darocure 1173 (CIBA Corporation) 3

[0066] Reactive tertiary amine compound (UCB 7100) 2.7

[0067] Solvent-based defoamer (Deqian Enterprise Co., Ltd. 3100) 0.3

[0068] Curing conditions: 80w / cm high pressure mercury lamp, irradiated at room temperature for 8 seconds; the laminate was irradiated with UV light and then heat-treated at about 100°C for 3 minutes to obtain a polarizer with an inner protective film. Then t...

Embodiment 3

[0070] The PVA polarizer functional film that can be polarized is made by the same method as in Example 1, and the TAC film is used as an inner protective film. The compounding method is the same as in Example 1.

[0071] Recipe 3:

[0072] Polybutadiene methacrylate (Changxing Chemical Industry Co., Ltd. 6143A-80) 15

[0073] Polyacid modified epoxy acrylate (EA210 of Shaanxi Jinling Light Curing Material Co., Ltd.) 15

[0074] Trifunctional acrylate (Sartomer CD9051) 15

[0075] Ethoxylated bisphenol diacrylate (Sartomer SR602) 25

[0076] Ethoxy nonylphenol acrylate (Sartomer CD612) 15

[0077] Pentaerythritol Triacrylate 13

[0078] Irgacure 184 (CIBA Corporation) 1

[0079] TPO (CIBA company) 1

[0080] Curing conditions: 80w / cm high pressure mercury lamp, irradiated at room temperature for 5 seconds; the laminate was irradiated with UV light and then heat-treated at about 100°C for 3 minutes to obtain a polarizer with an inner protective film. Then the performance...

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PUM

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Abstract

The invention relates to a UV optical solidifying adhesive agent, in particular a UV photo-curing adhesive for lamination of polarizer sheet protective membrane, which comprises prepolymer, reactive monomer, photo-initiation agent, and auxiliary agent.

Description

technical field [0001] The invention relates to a UV-curable adhesive, in particular to a UV-curable adhesive used for lamination of polarizer protective films. technical background [0002] Polarizer is an important part of liquid crystal display. Liquid crystal display (LCD) has been widely used in portable computers, calculators, clocks, LCD color TVs, digital displays, automation equipment, optical instruments, anti-halation glass, electronic advertising cards, etc. A typical liquid crystal display includes three key parts, an input polarizer, a liquid crystal cell, and an output polarizer. The liquid crystal cell controls the brightness of the display by controlling the degree of polarization of the light passing through the output polarizer. [0003] The role of polarizers is to change the properties of light. Natural light is longitudinal and transverse waves. When natural light passes through the polarizer, the polarizer absorbs the light vibrating in one direction...

Claims

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Application Information

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IPC IPC(8): C09J4/00
Inventor 秦长喜刘瀛
Owner CHINA LUCKY FILM CORP
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