Emulsion pressure-sensitive adhesive for polarizer protective film, and polarizer protective film thereof

A technology for protective films and polarizers, applied in pressure-sensitive films/sheets, optics, adhesives, etc., can solve problems such as environmental pollution and complex technical processes, achieve good hydrophobicity, increase the degree of crosslinking, and reduce the probability of residual glue Effect

Inactive Publication Date: 2020-05-22
HEFEI LUCKY SCI & TECH IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an emulsion pressure-sensitive adhesive for polarizer protective film in view of the problems of complex process and environmental pollution in the prior art

Method used

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  • Emulsion pressure-sensitive adhesive for polarizer protective film, and polarizer protective film thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Weigh 100 g of deionized water and 1 g of sodium acrylamido isopropyl sulfonate, stir and mix evenly to obtain a prefabricated solution;

[0036] (2) Weigh 33.7g of the prefabricated solution for dissolving 0.8g of ammonium persulfate to obtain an initiator solution; 2.5g of allyltrimethylammonium chloride, 25g of isooctyl methacrylate, 10g of vinyl acetate, 4g of , 1,1-trimethyl-N-2-propenylaminosilane, stirred quickly and mixed evenly to obtain an intermediate liquid;

[0037] (3) Add 0.8g sodium acetate and 5.9g intermediate solution to the remaining pre-preparation solution, pre-emulsify for 25 minutes to obtain a pre-emulsion, raise the temperature to 80°C, and add the initiator solution dropwise, until the pre-emulsion turns blue, add dropwise After the remaining initiator solution and the remaining intermediate solution are added, the emulsion is kept warm for 1 hour, then the temperature is lowered to 50°C, 2g of BI7982 (Bassington) and 1g of B1358 (Degussa)...

Embodiment 2

[0040] (1) Weigh 150g of deionized water and 2g of sodium methacrylate, stir and mix evenly to obtain a prefabricated solution;

[0041] (2) Take 76g prefabricated liquid and be used for dissolving 1g potassium persulfate to obtain initiator solution; 0.5g allyltrimethylammonium chloride, 0.5g diethyldiallylammonium chloride, 15g methyl Dodecyl acrylate, 8g methyl acrylate, and 3.5g of 1-hydroxyallyltrimethylsilane were stirred and mixed evenly to obtain an intermediate solution;

[0042] (3) Add 0.5g sodium pyrophosphate and 5.5g intermediate solution to the remaining pre-preparation solution, pre-emulsify for 20 minutes to obtain a pre-emulsion, raise the temperature to 82°C, and add the initiator solution dropwise, until the pre-emulsion turns blue, drop Add the remaining initiator solution and the remaining intermediate solution. After both additions are completed, the emulsion should be kept warm for 2.5 hours, and then cooled to 45°C. Add 0.4g BI7986 (Bassington), 0.4g B...

Embodiment 3

[0045] (1) Weigh 120 g of deionized water, 0.5 g of sodium acrylamide isopropyl sulfonate, and 1 g of sodium methacrylate sulfonate, stir and mix evenly to obtain a prefabricated solution;

[0046] (2) Take by weighing 36.5g prefabricated liquid and be used for dissolving 0.2g sodium persulfate, 0.3g potassium persulfate, obtain initiator solution; 2g diethyl diallyl ammonium chloride, 10g isooctyl methacrylate, 10g lauryl methacrylate, 2g methyl acrylate, 3g vinyl acetate, 1g 1-hydroxyallyltrimethylsilane, 1g 1,1,1-trimethyl-N-2-propenylaminosilane , quickly stir and mix evenly to obtain the intermediate liquid;

[0047] (3) Add 0.5g sodium acetate, 0.5g sodium pyrophosphate and 4.8g intermediate solution to the remaining pre-preparation solution, and pre-emulsify for 40 minutes to obtain a pre-emulsion, raise the temperature to 75°C, and add the initiator solution dropwise until the pre-emulsion becomes After blueing, add the remaining initiator solution and the remaining i...

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Abstract

The invention discloses an emulsion pressure-sensitive adhesive for a polarizer protective film, and the polarizer protective film thereof. The pressure-sensitive adhesive is prepared from the following raw materials in parts by weight: 100 to 200 parts of deionized water, 0.5 to 1.5 parts of a sulfonate reactive emulsifier, 1 to 4 parts of a double bond-containing quaternary ammonium salt monomer, 15 to 40 parts of a soft monomer, 5 to 10 parts of a hard monomer, 2 to 5 parts of a functional monomer and 1 to 4 parts of closed water-based isocyanate. According to the invention, the pressure-sensitive adhesive disclosed by the invention can be directly coated on the surface of a polyester film, an antistatic agent does not need to be added, the resistance of an adhesive layer is below 109 ohms, and the pressure-sensitive adhesive has an antistatic property; and when the polarizer protective film adhesive layer is attached to the surface of a polarizer, after high-temperature and high-temperature and high-humidity tests are carried out for 500 hours, the protective film and the polarizer are tightly attached, bubbles and bulges do not exist, and the defects of residual adhesive, shadows and the like do not exist when the protective film is torn off.

Description

technical field [0001] The invention relates to the field of film technology, in particular to a pressure-sensitive adhesive and a polarizer protective film thereof. Background technique [0002] The polarizer is an important part of the liquid crystal display. In order to prevent the surface of the polarizer from being polluted or scratched during transportation and use, it is necessary to attach a protective film to the surface of the polarizer. Polarizers are product inspections that perform optical evaluations such as the display capability, color gamut, and foreign matter of liquid crystal display panels when a surface protection film is attached. After the polarizer is assembled into the liquid crystal display, the surface protective film is peeled off from the surface of the polarizer. During the process of tearing off the surface protective film, the pressure-sensitive adhesive layer of the protective film has a high resistance value, which will generate a peeling vo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J7/25C09J7/38G02B1/14C08F220/18C08F218/08C08F226/02C08F230/08C08F220/58C08F228/02C08F220/14C08F2/24
CPCC08F2/24C08F220/18C09J143/04C09J2203/318C09J2433/00C09J7/255C09J7/385G02B1/14
Inventor 安佳丽周守发牛正富胡程鹏王辉
Owner HEFEI LUCKY SCI & TECH IND
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