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Acrylic optical film, and polarizing plate comprising same

A technology of acrylic and polyester acrylic, applied in optics, optical components, optical components, etc., can solve problems such as low water resistance and solvent resistance, reduced adhesive strength, and inability to coat functional coatings advantageously, achieving excellent Anti-stick performance, slip performance, and excellent workability

Active Publication Date: 2016-06-08
ANHUI HEMEI MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of an acrylic-based film, there arises a problem that a functional coating cannot be favorably coated due to poor solvent resistance; or the surface of the film is melted and damaged when the functional coating is formed
[0005] In view of the above-mentioned circumstances, a method of performing surface treatment such as plasma treatment and corona treatment on the surface of the protective film, or a method of forming a primer layer has been proposed, however, the methods that have been proposed so far have not been able to sufficiently ensure the performance of the functional coating. Adhesion strength between layers and protective films, especially those based on acrylic
For example, a polyurethane-based primer proposed in the art as a primer layer of a protective film has low water resistance and solvent resistance, and therefore, there is a problem that when the primer layer is stored under high humidity conditions for a long time, Adhesive strength decreases due to moisture penetration, or when a paint composition containing an organic solvent is applied to a primer layer, the primer layer swells due to the solvent contained in the paint composition, or because the primer layer dissolves in the paint composition, the primer layer is desorbed from the protective film

Method used

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  • Acrylic optical film, and polarizing plate comprising same
  • Acrylic optical film, and polarizing plate comprising same
  • Acrylic optical film, and polarizing plate comprising same

Examples

Experimental program
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Effect test

preparation example 1-3

[0135] Using the components and contents listed in Table 1 below, second primer layer compositions A to C were prepared by mixing a water-dispersible resin, colloidal silica, and water.

[0136] [Table 1]

[0137]

[0138]

preparation example 4-6

[0140] Using the components and contents listed in Table 2 below, first primer layer compositions (1)-(3) were prepared by mixing a water-dispersible resin, colloidal silica, and water.

[0141] [Table 2]

[0142]

[0143] Meanwhile, in [Table 1] and [Table 2], CK-PAD is the trade name of a polyester acrylic resin sold by Chokwang Paint Co., Ltd., and A-645GH is a polyester acrylic resin sold by Takamatsu Oil Co., Ltd. The trade names of the resins, CK-PUD-1004A is a trade name of a polyurethane-based resin sold by Chokwang Paint Co., Ltd., and CK-PUD-PF is a trade name of a polyurethane-based resin sold by Chokwang Paint Co., Ltd.

Embodiment 1-4

[0145] Under the conditions of 250° C. and 250 rpm, an unoriented film having a width of 800 mm was prepared with poly(cyclohexylmaleimide-co-methyl methacrylate) (PMMA830HR produced by LGMMA) using a T-die film forming equipment Afterwards, the film was oriented 1.8 times in the MD direction at a temperature of 135° C., and at 50 W / m 2 / min, corona treatment was carried out on both surfaces of the pre-coated film.

[0146] Next, the composition for the first primer layer was coated on one surface of the corona-treated acrylic-based film, and then the resulting product was dried at 90° C. for 1 min. On the opposite surface, the composition for the second primer layer was coated, and then the resulting product was oriented in the TD direction at 135° C. Acrylic film. Here, the composition for the first primer layer and the composition for the second primer layer were used as shown in [Table 3] below. In addition, the thickness of the first primer layer was 300 nm, and the th...

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Abstract

The present invention relates to a polarizing plate comprising an acrylic optical film, in which a first primer layer comprising a water-dispersible polyurethane resin is formed on one surface of the acrylic optical film, and a second primer layer comprising at least one of a water-dispersible polyester resin and a water-dispersible acrylic resin is formed on the other surface of the acrylic optical film.

Description

technical field [0001] The present invention relates to an acrylic-based optical film and a polarizing plate and a display device including the optical film, in particular to an acrylic-based optical film and a polarizing plate and a display device including the optical film, wherein the optical The film includes a polyurethane-based primer layer formed on one surface and a non-urethane-based primer layer formed on the other surface, thereby having excellent adhesive strength with an adhesive layer and a surface coating, and having excellent Anti-sticking properties (antiblockingproperty) and slip performance. Background technique [0002] A polarizing plate having a structure in which a protective film is laminated on one or both surfaces of a polarizing plate dyed with a dichroic dye or iodine based on polyvinyl alcohol (hereinafter, Formed from a resin known as "PVA"). A triacetyl cellulose (TAC) based film is generally used as a polarizing plate protective film in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C08J5/04C08L75/04C08L67/00C08L33/04G02B5/30C08J7/043C08J7/046
CPCC08G18/6229C08G18/44C08L75/04G02B5/305C08J2333/00C08J2433/00C08J2467/00C08J2475/04C08L67/00C08L33/12G02B1/14G02B5/3033C08J7/0427C08J7/043C08J7/046G02B1/04G02B5/30B32B27/40B32B27/308B32B27/08B32B2333/04C08J2333/04C08J2433/04C08J5/04B32B7/12B32B27/36B32B2250/02B32B2255/26B32B2307/42B32B2551/00
Inventor 林伊琅沈花燮金倞源田圣贤朴俊昱
Owner ANHUI HEMEI MATERIALS TECH CO LTD
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