Polarizing film comprising antistatic coating layer

A polarizing film, antistatic technology, applied in coatings, conductive coatings, optics, etc., can solve problems such as fully dependent on antistatic properties and incompetence

Active Publication Date: 2010-10-20
CHEIL IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem with this method is that the antistatic properties are highly dependent on humidity and are not adequate at low humidity

Method used

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  • Polarizing film comprising antistatic coating layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] "Solution A" was prepared by dispersing 5 g of polyethylenedioxythiophene (Baytron PH, Starck) dispersant in a solution of 40 g of ethanol and ethoxyethanol (1:1) for 10 minutes. Disperse 3.2 g of dipentaerythritol hexaacrylate (DPHA), 0.5 g of hydroxyethyl methacrylate (HEMA), 0.6 g of cellulose acetate butyrate and 0.7 g of Irgacure 184 (Ciba-Geigy) as a polymerization initiator in 50 g of ethanol and ethoxyethanol (1:1) for 10 minutes to prepare "Solution B".

[0055] Solution A was mixed with solution B and stirred for 30 minutes to prepare an antistatic coating composition. The triacetylcellulose membrane was saponified with 15 wt% NaOH aqueous solution for 40 s at 40 °C, thoroughly cleaned and dried. Coat the composition on a triacetyl cellulose film with a #4 rod coater, dry at 80 °C for 2 min, and use 500 mJ / cm 2 Curing is performed by UV light irradiation of exposure energy to form a film. The surface resistivity, cross-cut, transmittance, haze and contact a...

Embodiment 2

[0062] The procedure of Example 1 was repeated except that cellulose acetate propionate (CAP) was used instead of cellulose acetate butyrate (CAB).

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Abstract

A polarizing film comprising an antistatic coating layer is provided. The coating layer contains polyethylene dioxythiophene (PEDOT) doped with polystyrenesulfonate (PSS), a curable resin, a hydroxyacrylate compound, a cellulose compound and a photopolymerization initiator. The coating layer has good adhesion to a triacetyl cellulose film and a pressure-sensitive adhesive (PSA) layer. The polarizing film is advantageous in terms of transparency, surface resistance and moisture resistance. The use of the polarizing film prevents malfunction of a liquid crystal display (LCD) associated with static electricity.

Description

technical field [0001] The present invention relates to a polarizing film comprising an antistatic coating (herein also simply referred to as "antistatic layer" or "coating"), more particularly, to a polarizing film comprising a triacetyl fiber that can effectively prevent static electricity generation and is compatible with a resin base film. Antistatic coated polarizing film with good adhesion of plain film and pressure sensitive adhesive (PSA) layer, wherein antistatic coating is formed on triacetyl cellulose film and polyvinyl alcohol (PVA) film as polarizer The bonded surface is formed on the surface opposite to the surface on which the pressure sensitive adhesive is applied. Background technique [0002] Conventional polarizing films basically include a film-like polarizer composed of polyvinyl alcohol and cellulose resin films bonded to both surfaces of this polarizer, and generally have a multilayer structure in which a protective film is adhered to one of the resin ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08
CPCG02B5/3033C09D133/14C09K2323/03C09K2323/031C08L2666/02C09D133/08C09D133/00C09D5/24C09D5/00B32B2457/202
Inventor 金志雄黄星哲姜景求
Owner CHEIL IND INC
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