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Antistatic polyester film with acetylenediol surfactant and preparing method thereof

An antistatic, polyester film technology, used in polyurea/polyurethane coatings, conductive coatings, coatings, etc., can solve problems such as difficulty in finding coating compositions, easy charging on the surface of polymer films, and poor coating properties. problems, to achieve excellent transparency and anti-net performance, excellent peel strength of adhesive tape, and quickly respond to market changes.

Inactive Publication Date: 2010-12-22
TORAY ADVANCED MATERIALS KOREA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, despite these excellent properties, the problem with polymer films is that the surface of the film is easily charged when friction is applied because of its very high specific resistance
When the polymer film is charged, there are the following problems: foreign matter such as dust adheres to the surface of the film by static electricity, and the product coated with the film is shocked by electric shock, thereby causing product damage
[0011] However, in the prior art in-line coating process, coating properties such as leveling and wettability are insufficient due to high surface tension of the film coating surface, and coating defects caused by the insufficient properties are The main reasons for the decrease in yield and yield
If the content of surfactant is increased to solve the above problems, coating properties will be deteriorated, therefore, it is difficult to find an optimum coating composition

Method used

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  • Antistatic polyester film with acetylenediol surfactant and preparing method thereof
  • Antistatic polyester film with acetylenediol surfactant and preparing method thereof
  • Antistatic polyester film with acetylenediol surfactant and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] Step 1: Manufacture of uniaxially stretched polyester film

[0096] The polyethylene terephthalate particles having an intrinsic viscosity of 0.625 dl / g and containing 20 ppm of amorphous spherical silica particles having an average particle diameter of 2.5 µm were sufficiently dried in a vacuum dryer at 160°C for 7 hours. Melt, extrude the dry pellets and pass them through a T-die with the help of electrostatic pins to make them in close contact with a cooling drum to produce an amorphous unstretched sheet. The unstretched sheet was heated again and stretched 3.5 times in the running direction of the film at 95° C. to produce a uniaxially stretched polyester film. Then, the surface of the film to be coated was subjected to corona discharge treatment to produce a polyester film.

[0097] Step 2: Fabrication of Biaxially Stretched Polyester Film

[0098] 100 parts by weight of conductive polymer resin (aqueous dispersion containing 0.5% by weight of poly-3,4-methyle...

Embodiment 2

[0100] A biaxially stretched polyester film was produced in the same manner as in Example 1, except that 100 parts by weight of a conductive polymer resin (containing 0.5% by weight of poly 3,4-methylenedioxythiophene and 0.8% by weight of Aqueous dispersion of polystyrene sulfonic acid (molecular weight Mn=150,000), 400 parts by weight of polyurethane resin (anionic polyether polyurethane dispersion containing hydroxyl groups), 200 parts by weight of epoxy crosslinking agent (sold by Esprix Technologies CR-5L) and 150 parts by weight of fluororesin are mixed with each other to prepare an antistatic coating solution, and based on 100 parts by weight of the antistatic coating solution, 0.15 parts by weight of 2,5,8,11-tetramethyl Diol-6-dodecane-5,8-diol ethoxylate was added to the antistatic coating solution, and the solid content of the antistatic coating solution was 2.0% by weight.

Embodiment 3

[0102] A biaxially stretched polyester film was produced in the same manner as in Example 1, except that an anionic polyether polyurethane dispersion containing allylamine and its repeating unit as a functional group of the polyurethane resin was used.

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Abstract

The invention provides an antistatic coating composition for reducing coating defects, wherein the composition comprises, by weight, 100 parts of conductive polymer resin, 100-1000 parts of water dispersive polyurethane resin composed of anionic polyether polyurethane dispersion which contains at least one functional group selected from the following group of hydroxyl, amine, alkyl and carboxyl, 100-1000 parts of any cross-linking agent resin selected from the following group of isocynate, carbonyl imide, oxazoline and melamine compound, and 10-100 parts of fluororesin. The composition also comprises 0.001-1 parts of acetylenediol surfactant on the basis of 100 parts of all the said component resin. In addition, the invention provides an antistatic polyester film, which is prepared by coating the antistatic coating composition on one side or two sides of a polyester film during the in-line coating process. The antistatic polyester film is excellent in the tape peel force, the anti-scaling property and the solvent resistance and the physical property of the antistatic polyester film do not become worse significantly due to the property of the surfactant.

Description

technical field [0001] The present invention relates to an antistatic coating composition, an antistatic polyester film using the composition and a method for producing the same. More specifically, the present invention relates to an antistatic coating composition for reducing coating defects, said composition containing: a conductive polymer resin imparting excellent antistatic properties; a polyurethane resin improving tape peel strength; A suitable cross-linked resin to improve solvent resistance and coating properties; a fluororesin to improve anti-fouling properties; and an acetylene glycol surfactant to minimize coating defects and make the coating properties of the composition easy to control. The present invention also relates to an antistatic polyester film using the composition and a method for producing the same. Background technique [0002] In general, because polymer films have good elasticity and flexibility and have excellent mechanical properties, heat resi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D5/24C09D7/12C09D165/00C09D127/18C09D127/20C09D127/14C09D127/16C09D127/12C08J5/18B29C55/02B29K67/00
Inventor 金在勋李圭锡徐相源徐正泰
Owner TORAY ADVANCED MATERIALS KOREA
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