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Composition for static dissipative coating layer, polarizing plate and optical display apparatus

A technology of electrostatic dissipation and composition, applied in the direction of coating, optics, conductive coatings, etc., can solve the problems of performance degradation, film can not be used effectively, insufficient optical properties such as transparency and adhesion

Pending Publication Date: 2018-06-29
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, films formed by this technique exhibit insufficient optical properties such as transparency or insufficient adhesion to other films
In addition, the film cannot be effectively used due to performance deterioration due to the influence of temperature or humidity, foaming, etc.
In addition, although the surfactant can be deposited on the triacetyl cellulose film when forming the conductive layer on the triacetyl cellulose film, this method has the problem of significant dependence of charge prevention on humidity, and at low humidity Insufficient performance provided

Method used

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  • Composition for static dissipative coating layer, polarizing plate and optical display apparatus
  • Composition for static dissipative coating layer, polarizing plate and optical display apparatus
  • Composition for static dissipative coating layer, polarizing plate and optical display apparatus

Examples

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preparation example Construction

[0066] In the preparation of prepolymers, tin compounds, such as tin salts of carboxylic acids, such as dibutyltin dilaurate, or amine compounds, such as dimethylcyclohexylamine or triethylenediamine, can be further included as catalysts to promote Formation of urethane bonds. In the preparation of the prepolymer, diol (such as aliphatic diol), aminoalcohol, diamine, hydrazine, hydrazide or a mixture thereof may be further included as a chain extender for extending the chain of the prepolymer. Preparation of the prepolymer may be performed at 50°C to 200°C for 30 minutes to 10 hours. Within this range, prepolymers can be produced in high yield.

[0067] Then, by polymerizing a (meth)acrylic monomer containing no carboxylic acid group with the prepared prepolymer, followed by polymerization with a (meth)acrylic monomer containing a carboxylic acid group, a Polyurethane (meth)acrylate with acid groups. The (meth)acrylic monomer not containing a carboxylic acid group may inclu...

preparation example 1

[0139] Preparation Example 1: Preparation of Curable Resin

[0140] 200 g of polycaprolactone diol (weight average molecular weight: 2,000 g / mol, Daicel Chemical Industries, Ltd.) was placed in a 1 L reactor purged with nitrogen. Then, 105 g of methylene diphenyl diisocyanate (MDI, BASF) and 0.5 g of dibutyltin dilaurate (DBTDL) (S, Soken Co., Ltd.) were further added thereto. In the reactor, the resulting mixture was stirred at 90° C. for 30 minutes. While stirring the mixture at a constant rate, 27 g of dimethylolpropionic acid (Pestorp Co., Ltd.) was added thereto to provide ions, and 110 g of N-methyl-2-pyrrolidine (NMP, Samchun Chemicals Co., Ltd.) to dissolve dimethylolpropionic acid. Then, the resulting mixture was left in a reactor at 92° C. for 5 hours.

[0141] The prepolymer obtained from the reactor was cooled to 75° C. and 264 g of methyl methacrylate (Aldrich GmbH) were added to the prepolymer. The resulting mixture was stirred at 75°C for 15 minutes and cool...

preparation example 2

[0142] Preparation Example 2: Preparation of Curable Resin

[0143] 200 g of polycaprolactone diol (weight average molecular weight: 2,000 g / mol, Daicel Chemical Industries, Ltd.) was placed in a 1 L reactor purged with nitrogen. Then, 105 g of methylene diphenyl diisocyanate (MDI, BASF) and 0.5 g of dibutyltin dilaurate (DBTDL) (S, Soken Co., Ltd.) were further added to the reactor. The resulting mixture was stirred at 90° C. for 30 minutes in a reactor. While stirring the mixture at a constant rate, 27 g of dimethylolpropionic acid (Pestorp Co., Ltd.) was added to the reactor to provide ions, and 110 g of N-methyl-2-pyrrolidine (NMP, Samchun Chemicals Co., Ltd.) to dissolve dimethylolpropionic acid. Then, the resulting mixture was left in a reactor at 92° C. for 5 hours.

[0144] The prepolymer obtained from the reactor was cooled to 75° C. and 264 g of methyl methacrylate (Aldrich GmbH) were added to the prepolymer. The resulting mixture was stirred at 75°C for 15 minut...

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Abstract

Provided is a composition for a static dissipative coating layer, a polarizing plate and an optical display apparatus. The composition for the static dissipative coating layer contains curable resin having a carboxyl group, a bifunctional aziridine curing agent and a conductive polymer.

Description

[0001] Citations to related applications [0002] This application claims the benefit of Korean Patent Application No. 10-2016-0167990 filed with the Korean Intellectual Property Office on December 9, 2016, the entire disclosure of which is incorporated herein by reference. technical field [0003] The present invention relates to a composition for a static dissipative coating layer, a polarizing plate (polarizing plate) comprising the composition, and an optical display comprising the polarizing plate. More particularly, the present invention relates to a composition for static dissipative coatings, which has a long pot-life to provide good coating processability, exhibits good performance under high temperature / high humidity conditions Excellent durability with little change in surface resistance, ensures good adhesion to polarizing films and / or adhesive layers at room temperature and under high temperature / high humidity conditions, and enables static dissipation with unifor...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D151/08C09D165/00C09D125/18C08F283/00C08F220/14C08F220/06C08G18/32C08G18/34C08G18/42C08G18/66C08G18/67G02B1/16G02B5/30G02F1/1335
CPCC08F283/006C08G18/3228C08G18/348C08G18/4277C08G18/6651C08G18/6659C08G18/6755C08L2201/10C08L2203/20C08L2205/03C09D175/14G02B5/3058G02F1/133528G02B1/16C08F220/14C08F220/06C08L51/08C08L65/00C08L25/18C08K5/0025C08K5/3412C08L101/12C09D5/24C09D7/20C09D7/63C09D7/65C09J7/20G02B5/30G02F1/1333
Inventor 金源俞美然郑喆韩仁天
Owner SAMSUNG SDI CO LTD
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