KR20010112770A - Method of producing an antistatic film - Google Patents

Abstract

The present invention is directed, inter alia, to methods of utilizing low calcemic vitamin D analogues. Particularly, the present invention is directed to using low calcemic vitamin D analogues to treat neurodegenerative diseases and disorders, to facilitate endogenous production of neurotrophic factors, to inhibit the degradation, dysfunction or loss of neural cells and/or to enhance the phenotype of neural cells or neuronal processes.

Description

Method for producing antistatic film using antistatic alcohol soluble polymer {Method of producing an antistatic film}

The present invention relates to the production of an antistatic film, and more particularly, is prepared by dissolving polypyrrole, a conductive polymer, in various alcohol solvents, glass or ordinary vinyl, a case made of various plastics, TV CRT, cover vinyl And a method for manufacturing an antistatic film, which may be used by coating on display windows of measuring instruments and the like, and blended with resins such as urethane and epoxy, and may also be used as antistatic floor coating materials for clean rooms and analyzer rooms. will be.

Charges can occur on the surface of an object for a variety of reasons, which are usually caused by static electricity between two friction objects or by strong external electric fields. In the state where the surface of such an object is charged, various harmful phenomena occur in the body, communication device, measuring device, home appliance, etc. by the electric field generated from the electric charge.

Such static electricity does not flow and accumulates on a surface of a certain object, and then discharges momentarily upon contact with another object. In particular, when contacted with a human body, a significant electric shock is often applied, causing severe discomfort.

In addition, in the case where the stored charge is adjacent to a precise circuit such as an IC circuit, the probability that the circuit will malfunction due to the electric field generated at this time increases, so it is very important to quickly remove the charged charge.

As a method of suppressing the accumulation of electric charges and eliminating the discharge phenomenon of static electricity, a method of coating a conductive film through which electricity can flow on the surface of an object and conducting it has been proposed. There were many cases.

Conventional conductive paints have used a method of uniformly dispersing carbon (C), fine metal powder or ferrite, etc. in general organic non-conductive paint to impart conductivity to the paint by these dispersed mixed conductors. .

However, the method of finely dispersing these conductors and dispersing them uniformly is not only good for uniform film formation of the film, but also difficult to process for fine powdering, which requires a lot of material cost, and dispersing them. In addition, it is difficult to uniformly disperse due to the difference in material properties between organic and inorganic or metal, and there is a problem in that the finished paint also has a problem of lowering the conductivity of the entire paint due to phase separation. there was.

In particular, in the case of using fine powders of carbon or metal, when the fine powders of these metals are used in a large amount, the conductivity is improved, and accordingly, mechanical stress is generated, resulting in deterioration of the physical properties of the coating film.

The present invention has been made to solve the conventional problems as described above, an object of the present invention is to provide a method for producing an antistatic film by dissolving polypyrrole, a conductive polymer in an alcohol solvent or an organic solvent.

It is another object of the present invention that the metal powder for imparting conductivity is not added, the price is low, no mechanical stress is generated, and environmentally friendly alcohol solvents or organic solvents are used, which are not harmful solvents of the conventional conductive polymers. To provide a method for producing an antistatic film that the surface to be coated is not rough.

In order to achieve the above object, the present invention,

0.4 moles of pyrrole, a dopant purified through vacuum distillation, 0.4 moles of ammonium peroxydisulfate as an oxidant, and 0.15 moles of isococtylsulfosuccinic acid were added to 900 ml of distilled water and stirred with a magnetic paddle at room temperature. Separately, add 0.2 molar ammonium peroxydisulfate to 100 ml distilled water and stir hard with a magnetic stirrer and store at room temperature. Distilled water with 0.08 molar ammonium peroxydisulfate dissolved at room temperature is dissolved in the pyrrole and isooctylsulfosuccinic acid. slowly added to containing the distilled water and allowed to stand slowly stirring stir pieces magnet for 20 hours and filtered at the furnace washed with acetone after the reaction was over, and put the pieces thus obtained were washed in a drying tube connected to a vacuum line for 24 hours 10 ^- Dry under a dynamic vacuum of ³ torr pressure Dissolving the dried polypyrrole in an environmentally friendly alcohol solvent to synthesize soluble polypyrrole (S1); And

After dissolving the synthesized soluble polypyrrole in the alcohol solvent or the organic solvent, solution casting, spin-coating, doctor casting, tape casting, spray ( It provides a method for producing an antistatic film, characterized in that it comprises a coating by spraying, or a coating molding step (S2) by dipping.

The alcohol solvent is 1-butanol, isopropyl alcohol, isobutyl alcohol, t-butyl alcohol, t-butyl alcohol, benzyl alcohol, oleyl alcohol (oleyl alcohol) or lauryl alcohol.

The organic solvent is chloroform, ethyl carbitol, n-methyl-2-pyrrolidinone, tetrahydrofuran, tetrahydrofuran, dimethylsulfoxide or It consists of dimethylformamide.

As mentioned above, according to the present invention, polypyrrole, which is a conductive polymer, is dissolved in an environmentally friendly alcohol solvent or an organic solvent, which is not a harmful solvent of a conventionally used conductive polymer, and an antistatic film is prepared using the same.

Hereinafter, described in detail with respect to the manufacturing method of the antistatic film according to the present invention.

In the present invention, in order to achieve the above object, pyrrole was emulsion-polymerized by oxidizing with an oxidizing agent in a solvent of isococtylsulfosuccinic acid.

Thus obtained polypyrrole powder is 1-butanol, 1-buthanol, isopropyl alcohol, isobutyl alcohol, t-butyl alcohol, benzyl alcohol, A method of manufacturing by dissolving in oleyl alcohol, lauryl alcohol solvent, the predetermined alcohol solvent is dissolved by stirring using a magnetic stirrer and filtered to remove the insoluble polypyrrole powder from the solution Using a means to prepare a uniform polypyrrole solution, and then pour the polypyrrole solution to a uniform thickness on a clean, dry, leveled substrate, and then dried for 1 to 5 hours while maintaining a temperature of 50 to 80 ℃ To prepare.

Alcohol solvent or chloroform, ethyl carbitol, n-methyl-2-pyrrolidinone, tetrahydrofuran, dimethylsulfoxide ), A uniform solution of polypyrrole solution dissolved in an organic solvent of dimethylformamide can be coated on the surface of general glass or vinyl.

The coated vinyl may be used for packaging electronic components that are sensitive to charges such as IC, for example, and may be used as a coating material for cases, TV CRTs, and information displays.

Figure 1 shows the structure of the polypyrrole dopant diisooctylsulfosuccinic acid.

Figure 2 shows a polypyrrole structure doped with diisooctylsulfosuccinic acid.

<Example>

① First embodiment

The method for synthesizing polypyrrole as a soluble conductive material in alcohol or organic solvent is as follows.

Pyrrole, a monomer, was purified through vacuum distillation, and 0.4 ml of ammonium peroxydisulfate, an oxidizing agent, 0.4 mol of pyrrole, and 0.15 mol of isococtylsulfosuccinic acid were used in 900 ml. Put it in distilled water and stir it hard with a magnetic spoon and keep it at room temperature (25 ℃). Separately, ammonium peroxydisulfate at a concentration of 0.2 mol is added to 100 ml of distilled water and stirred with a magnetic stir and stored at room temperature (25 ° C).

Distilled water containing 0.08 mol ammonium peroxydisulfate dissolved at room temperature (25 ° C) is slowly added to distilled water containing pyrrole and isooctylsulfosuccinic acid. At this time, the reactant is left for 20 hours while stirring slowly with a magnetic spoon.

After the reaction was completed, the resultant was filtered in a suction funnel, washed with acetone, and filtered. The obtained pieces were placed in a drying tube connected to a vacuum line and dried under dynamic vacuum (10 ^-3 torr) for 24 hours.

The dried polypyrrole was converted into environmentally friendly alcohol solvents such as 1-buthanol, isopropyl alcohol, isobutyl alcohol, t-butyl alcohol and benzyl alcohol. Soluble polypyrrole having excellent solubility in alcohol, oleyl alcohol and lauryl alcohol was synthesized.

Thus prepared polypyrrole is the alcohol solvent or chloroform, chloroform, ethyl carbitol, n-methyl-2-pyrrolidinone, tetrahydrofuran, tetrahydrofuran, dimethyl sulfoxide Solution casting and spin-coating from a solution of an organic solvent of dimethylsulfoxide, dimethylformamide, tape casting by a doctor blade, By various molding methods such as coating by spray spraying and coating by dipping, a very smooth and uniform surface state could be obtained.

The conductivity measured from the film cast in solution showed an electrical conductivity of 10 ⁻¹ to 10 ⁻⁴ S / cm depending on the solvent.

② Second embodiment

1 g of polypyrrole prepared in Example 1 is 1-butanol, isopropyl alcohol, isobutyl alcohol, t-butyl alcohol, benzyl alcohol, oleyl alcohol, alcohol solvent of lauryl alcohol, chloroform, ethyl carbitol, Mixed solution of N-methyl-2-pyrrolidinone, tetrahydrofuran, dimethyl sulfoxide, dimethylformamide with 0.2 g of polyester, polyalcohol, polymethylmethacrylate and blended After preparing the coating on the surface of a common glass or vinyl to prepare an antistatic film.

As described above, according to the present invention, polypyrrole, which is a conductive polymer, is dissolved in an environmentally friendly alcohol solvent or an organic solvent, which is not a harmful solvent of a conventionally used conductive polymer, and an antistatic film is prepared using the same.

The antistatic film thus prepared may be coated on the surface of glass or vinyl, and the coated vinyl may be used for packaging electronic components that are sensitive to charge, such as, for example, ICs, casings, TV tubes, and information displays. It can be used as a coating material.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention as set forth in the claims below. It will be appreciated.

Claims (6)

0.4 moles of pyrrole, a dopant purified through vacuum distillation, 0.4 moles of ammonium peroxydisulfate, an oxidant, and 0.15 moles of isococtylsulfosuccinic acid were added to 900 ml of distilled water, and stirred with a magnetic paddle at room temperature. Separately, add 0.2 molar ammonium peroxydisulfate to 100 ml distilled water and stir hard with a magnetic stirrer and store at room temperature. slowly added to containing the distilled water and allowed to stand slowly stirring stir pieces magnet for 20 hours and filtered at the furnace washed with acetone after the reaction was over, and put the pieces thus obtained were washed in a drying tube connected to a vacuum line for 24 hours 10 ^- Dried under dynamic vacuum at ³ torr Dissolving the dried polypyrrole in an environmentally friendly alcohol solvent to synthesize soluble polypyrrole (S1); And After dissolving the synthesized soluble polypyrrole in the alcohol solvent or the organic solvent, solution casting, spin-coating, doctor casting, tape casting, spray ( spray) A method of manufacturing an antistatic film, comprising the step of coating by spraying or coating forming by dipping (S2). The method of claim 1, wherein the alcohol solvent is 1-buthanol, isopropyl alcohol, isobutyl alcohol, isobutyl alcohol, t-butyl alcohol, benzyl alcohol Alcohol), oleyl alcohol (oleyl alcohol) and lauryl alcohol (lauryl alcohol) a method for producing an antistatic film, characterized in that the material selected from the group consisting of. The method of claim 1, wherein the organic solvent is chloroform, ethyl carbitol, n-methyl-2-pyrrolidinone, tetrahydrofuran, dimethyl Method for producing an antistatic film, characterized in that the material selected from the group consisting of sulfoxide (dimethylsulfoxide) and dimethylformamide (dimethylformamide). 0.4 moles of pyrrole, a dopant purified through vacuum distillation, 0.4 moles of ammonium peroxydisulfate as an oxidizing agent, and 0.15 moles of isooctylsulfosuccinic acid were added to 900 ml of distilled water and stirred at room temperature with a magnetic stirrer. Add ammonium peroxydisulfate in 100ml distilled water and stir hard with a magnetic stirrer and store at room temperature.Add distilled water dissolved in 0.08 mol ammonium peroxydisulfate to the distilled water containing pyrrole and isooctylsulfosuccinic acid at room temperature. Stir slowly with a magnetic stir to stand for 20 hours, filter in a furnace after the reaction and wash with acetone, and put the obtained pieces into a drying tube connected to a vacuum line for 24 hours at a dynamic vacuum of 10 ^-3 torr pressure. drying under dynamic vacuum, and the dried polypyrrole Step of the synthesis by dissolving in a solvent a soluble polypyrrole (S1); And 1 g of the synthesized soluble polypyrrole is blended with 0.2 g of polyester, poly alcohol and polymethylmethacrylate in the alcohol solvent or the organic solvent at 50 ° C. to prepare a mixed solution, Method for producing an antistatic film, comprising the step of coating on the surface (S2). The method of claim 4, wherein the alcohol solvent is 1-butanol, isopropyl alcohol, isobutyl alcohol, isobutyl alcohol, t-butyl alcohol, benzyl alcohol Alcohol), oleyl alcohol (oleyl alcohol) and lauryl alcohol (lauryl alcohol) a method for producing an antistatic film, characterized in that the material selected from the group consisting of. The method of claim 4, wherein the organic solvent is chloroform, ethyl carbitol, n-methyl-2-pyrrolidinone, tetrahydrofuran, dimethyl Method for producing an antistatic film, characterized in that the material selected from the group consisting of sulfoxide (dimethylsulfoxide) and dimethylformamide (dimethylformamide).