KR101336838B1 - Colorless antistatic agent for electronic materials, menufactruirng method of it and ultraviolet-curable antistatic coating agent using the antistatic agent, coating material using it - Google Patents

Abstract

The present invention relates to a colorless antistatic agent for an electronic material, an antistatic agent manufacturing method, an ultraviolet curable antistatic coating agent using an antistatic agent, and a material coated using the same, more specifically, a surfactant, a neutralizing agent, and a fluorine-based lithium organic compound. A colorless antistatic agent for electronic materials formed by mixing
A method of preparing an antistatic agent comprising a pH stabilizing step of adding a neutralizing agent to a surfactant, a step of adding a fluorine-based lithium organic compound to the surfactant having undergone the pH stabilizing step, and stirring and mixing at a constant stirring speed at a predetermined temperature; ,
The present invention relates to an ultraviolet curable antistatic coating agent composed of a mixture of the antistatic agent, the polyfunctional oligomer or monomer, the leveling agent, the organic solvent which is a dilution solvent, and a photoinitiator, and a material prepared using the same.

Description

COLORLESS ANTISTATIC AGENT FOR ELECTRONIC MATERIALS, MENUFACTRUIRNG METHOD OF IT AND ULTRAVIOLET-CURABLE ANTISTATIC COATING AGENT USING THE ANTISTATIC AGENT US, COATING MATERIAL IT}

The present invention provides a colorless antistatic agent for an electronic material formed by a mixture of a fluorine-based organic compound, a surfactant, and a neutralizing agent, and a method for manufacturing the same, and an ultraviolet curable charging method using the same, in order to prevent static interference generated from an electronic material such as an optical sheet. It relates to a protective coating and a coating material using the same.

Plastic materials widely used in electrical and electronic materials, optical materials, and automotive parts materials include vinyl chloride (PVC), polymethyl methacrylate (PMMA), polycarbonate (PC), and acrylonitrile-butadiene-styrene copolymers. (ABS copolymer), polyester film (PET) and the like, these materials (or plastics) are superior to other materials in impact resistance, processability and transparency, light transmittance and mechanical properties (mechanical properties) and lightweight As a feature, it is used for a wide range of applications.

However, these materials generally have weak disadvantages in chemical resistance, solvent resistance, acid resistance, alkali resistance, fouling resistance, and electrical insulation resistance. In particular, these materials have high electrical insulation properties compared to materials that form conductivity such as metal, and thus, friction or Due to external impact, the material is easy to generate and accumulate static electricity, which can cause problems in the material application due to static electricity disturbance.

As an example of the electrostatic disturbance, accurate positioning and quantitative coating and printability due to electrostatic shock during printing, adhesion, coating, and packaging may be difficult, and electro-physical impact on electronic products may occur, causing problems.

At present, in order to prevent electrostatic disturbance, an antistatic agent is added during the processing of the material, or an antistatic agent is applied or coated on the processed material surface.

In the case of the material processing by adding the antistatic agent, the antistatic performance is reduced because it is not present inside but is exposed to the outside depending on the processing conditions at high temperature. Cause. Therefore, the coating or coating method has been applied to the surface of the material mainly mixed with a raw material that can be applied by coating at room temperature, heat curing, moisture, anaerobic or ultraviolet curing and other methods. In the case of the antistatic agent used in such a coating or coating application method, there is a problem that causes the surface to appear or surface properties decrease, light transmittance decrease, compatibility, yellowing, poor curing rate, etc. over time.

On the other hand, when the conductive metal oxide filler is used, the surface resistance value can be effectively lowered. However, it is difficult to control the thickness of the coating film due to the thixotropy phenomenon. Affect

Regarding the antistatic agent, Korean Patent No. 10-0905961 (Registration date June 26, 2009) describes the technology for 'antistatic agent, antistatic film and antistatic film coating article', Korean Patent Publication No. 10-2005-0067149 Date of June 30, 2005) Technology for 'Thermoplastic polymer compound, thermoplastic polymer composition, antistatic agent and resin composition', Korean Patent No. 10-0184731 (December 21, 1998) 'A bifunctional antistatic agent containing an ammonium salt and a method for preparing the same' are disclosed, respectively.

The technologies disclosed in the patent document are related to the antistatic effect by applying a conductive polymer and a surface activity exhibiting color to implement an antistatic effect, permanent UV photocurable antistatic agent, thermosetting type low hardness type, The object of the present invention is to be suitable for application to a coating film having a high hardness and a crosslinking degree, and in the case of a coating surface having a high hardness (pencil hardness of 2H or more) and a crosslinking degree, a high insulator is formed to reduce antistatic performance. have.

In the case of the coating product thus manufactured, it is usually present in its own color or particle form as it is exposed to the outside or applied to an optical product. Since this is a difficult problem, there is a problem that it is difficult to achieve the effect to be achieved in the present invention.

In the present invention has a semi-permanent antistatic function in the UV curing reaction coating composition, to achieve the development of an antistatic agent for the production of high hardness colorless transparent coating, in particular in the antistatic coating by the UV curing reaction An antistatic agent has been developed to solve the same problem.

Republic of Korea Patent Registration 10-0905961 (Registration date June 26, 2009) Republic of Korea Patent Publication 10-2005-0067149 (published June 30, 2005) Republic of Korea Patent Registration 10-0184731 (Registration date December 21, 1998)

In order to solve the above problems, the present invention, in applying the coating to the material by the ultraviolet light curing reaction, by adding to a plastic material exhibiting high electrical insulation, weather resistance, solvent resistance, stain resistance, surface properties with the photocurable composition , Light transmittance, glossiness, and light curing speed does not occur, and the surface resistance value with the change over time can exhibit excellent stability, colorless antistatic agent for electronic materials that can be applied to a variety of plastic materials and their preparation It is an object of the present invention to provide a method and an ultraviolet curable antistatic coating agent and a coating material using the same.

In order to achieve the above object,

The present invention is 49 ~ 99wt% surfactant,

With 0.001 to 1wt% neutralizing agent,

Technical composition of colorless antistatic agent for electronic materials composed of 0.9 ~ 50wt% of fluorine-based lithium organic compound,

As a manufacturing method of the colorless antistatic agent,

PH stabilization step of adding a neutralizing agent to the surfactant,

Injecting a fluorine-based lithium organic compound into the surfactant after the pH stabilization step,

Technical configuration of a colorless antistatic agent for an electronic material comprising a step of stirring and mixing until the fluorine-based lithium organic compound is completely dissolved at 40 ~ 80 ℃ at 50 ~ 60rpm,

As an antistatic coating composition comprising the antistatic agent,

0.1 to 10 wt% of the antistatic agent,

10 to 70 wt% of a polyfunctional oligomer or monomer,

0.1-0.3 wt% of leveling agent,

10 ~ 70wt% of organic solvent which is a dilution solvent,

Technical composition for UV-curable antistatic coating composition composed of 1-15 wt% of photoinitiator and

As a coating material applying the antistatic coating agent,

After coating the plastic material using the ultraviolet curable antistatic coating agent,

Antistatic coating material coated with antistatic coating by drying the solvent for 40 seconds ~ 2 minutes in the temperature range of 80 ~ 150 ℃ and photopolymerizing with 200 ~ 800mJ / ㎠ irradiation dose with 500mW / ㎠ irradiation intensity with UV-A The technical configuration for the main technical configuration.

When the UV curable antistatic coating is prepared using the antistatic agent according to the present invention and applied to a plastic material, there is an excellent electrical insulating property when compared with the case where it is not.

In addition, in the preparation of the ultraviolet curable antistatic coating agent when using the antistatic agent according to the present invention, the prepared coating agent is lowered in weather resistance, solvent resistance, stain resistance, surface properties, light transmittance, glossiness, curing rate There is no phenomenon and shows excellent stability of surface resistance value with change over time.

In addition, the ultraviolet curable antistatic coating agent according to the present invention has an advantage in that it can be applied to various kinds of plastics according to the photocurable composition.

Hereinafter, the technical contents of the above description will be described in detail.

Colorless antistatic agent for electronic materials

As described above, the colorless antistatic agent for the electronic material is composed of 49 to 99 wt% of a surfactant, 0.001 to 1 wt% of a neutralizing agent, and 0.9 to 50 wt% of a fluorine-based lithium organic compound.

The surfactant has a function of a solvent, and specific examples thereof include any one or two selected from ethylene oxide, propylene oxide, copolymer (Ethylene oxide / Propylene oxide copolymer), polyethylene glycol, ethylene carbonate, and propylene carbonate. When more than one species are used, when the amount is less than 49wt%, there is a problem that the viscosity rises, and when the amount exceeds 99wt%, there is a problem that the antistatic power is lowered. It is preferable to limit the amount to 49 to 99 wt%.

The neutralizing agent has a decatalytic (neutralizing) function of a surfactant, and specific examples thereof include acetic acid.

In this case, when the amount of the neutralizing agent is less than 0.001wt%, there is a problem that the neutralization is not performed, and when the amount of the neutralizing agent is more than 1wt%, there is a problem that the pH is changed to acidic, so the amount of the neutralizing agent is 0.001 to 1wt of the total antistatic agent. It is preferable to limit in the range of%.

The fluorine-based lithium organic compound has an antistatic function and a UV curing function, and specific examples thereof include 1,2-dimethyl-3-propylimidazolium tris (trifluoromethylsulfonyl) methide, Lithium tetraphenylborate tris (1,2-dimethoxyethane), Bis (trifluoromethane) sulfonimide lithium salt, Lithium acetoacetate, Lithium trifluoromethanesulfonate, Lithium 2-ethylhexoxide, Lithium 3,5-diiodosalicylate, Lithium trimethylsilanolate, Lithium iodoacetate, Lithium salicylate, Lithium lactate, Lithium trifluoroaceate, Lithiumsulium isitrate ) methide, Lithium p-toluenesulfinate, Lithium sulfate monohydrate, Lithium benzoate, Lithium aluminum oxide, Lithium 2,4-pentanedionate, Lithium metasilicate, Lithium phosphate monobasic, Lithium Metaborate, Lithium carbonate, Lithium Chloride, Lithium tetraborate, Lithium perchlorate Lithium hexafluorophosphate, Lithium hexafluoroarsenate, Lithium phosphate, and lith At least one selected from ium nitrate, sodium acrylate, zirconium acrylate, zinc acrylate, aluminum acrylate, iron (III) acrylate, copper (II) acrylate, alkyl imidazolium, acrylic acid and carboxyl acrylate is used.

In this case, when the amount of the fluorine-based lithium organic compound is less than 0.9wt%, there is a problem that the antistatic functionality is lowered. When the amount of the fluorine-based lithium organic compound is exceeded, the viscosity of the finished product is too high. The amount of is preferably limited to within the range of 0.9 to 50wt% of the total antistatic agent.

Manufacturing method of colorless antistatic agent for electronic materials

As described above, the method for preparing a colorless antistatic agent for an electronic material includes a pH stabilizing step of adding a neutralizing agent to a surfactant;

Injecting a fluorine-based lithium organic compound into the surfactant after the pH stabilization step,

It comprises a step of stirring and stirring until the fluorine-based lithium organic compound is completely dissolved at 50 ~ 60rpm at 40 ~ 80 ℃.

The temperature and agitation rate in the last step of the manufacturing process is related to the dissolution rate of the fluorine-based lithium organic compound, and when the temperature and the agitation rate are less than 40 ° C. and 50 rpm, it takes a long time due to complete dissolution. When the temperature exceeds 60 rpm, the temperature and stirring speed are not limited because it does not affect the time change due to dissolution. Therefore, the temperature and the stirring speed are preferably limited within the range of 40 to 80 ℃ and 50 to 60 rpm.

UV curable antistatic coating

The ultraviolet curable antistatic coating agent is a composition containing a colorless antistatic agent for the electronic material described above in a predetermined ratio, has a high electrical insulation.

The UV curable antistatic coating agent is 0.1 to 10wt% of the colorless antistatic agent, 10 to 70wt% of polyfunctional oligomer or monomer, 0.1 to 0.3wt% of leveling agent, 10 to 70wt% of organic solvent which is a dilution solvent, and photoinitiator 1 It is composed of a mixture of ~ 15wt%.

At this time, when the amount of the colorless antistatic agent is less than 0.1wt%, dust or foreign matter due to the prevention of static electricity accumulation and non-conductor properties may be attached to the coating surface, and when it exceeds 10wt%, the mechanical properties of the coating film Since there is a problem of deterioration of physical properties, it is preferable to keep the amount of the colorless antistatic agent within the range of 0.1 to 10 wt% in the total UV curable antistatic coating agent.

The polyfunctional oligomers or monomers have a function of controlling the mechanical properties of the high hardness type UV curable antistatic coating agent, such as crosslinking degree, hardness and scratch resistance, and specific examples thereof include Dipentaerythritol Hexaacrylate (DPHA) and Dipentaerythritol Pentaacrylate (DPPA). , Pentaerythritol Tetraacrylate (PETTA), Dimethylolpropane Tetraacrylate (DTMPTTA), Pentaerythritol n-EO Tetraacrylate (PE (EO) _n TTA), Tris (2-hydroxy Ethyl) isocyanurate Triacrylate (THEICTA), Trimethylolpropane (PO) ₃ Triacrylate (TMP (PO) ) ₃ TA), Pentaerythritol Triacrylate (PETA), Pentaerythritol Triacrylate (PETA), Glycerine propoxylated Triacrylate (GPTA), Trimethylolpropane Triacrylate (TMPTA), Tris (2-hydroxy Ethyl) isocyanurate DA (THEICDA), Tetraethylene glycol Diacrylate (TTEGDA), Tricyclodecane dimethanol Diacrylate (TCDDA), Butanediol Diacrylate (BDDA), 1,6-Hexanediol Diacrylate (HDDA), Phenol (EO) Acrylate (PHEA), Aliphatic multifunctional Oli Any one or a mixture of two or more selected from gomers is used.

If the amount of the polyfunctional oligomer or monomer is less than 10wt%, the content of solids as an ultraviolet curable raw material is low when coating with the prepared coating liquid, so that it is difficult to control the thickness of the coating film. Since a high content causes a bad state of the coating surface, the amount of the polyfunctional oligomer or monomer is preferably maintained within the range of 10 to 70wt% of the total UV curable antistatic coating agent.

The leveling agent has a function of leveling, slipping, and wettability of the coating during coating. Specific examples thereof include any one or more selected from polysiloxane, polyethersiloxane, and polyacrylate modified types.

At this time, when the usage amount is less than 0.1wt%, it is difficult to sufficiently show physical properties such as leveling, wettability, and wettability, and when it exceeds 0.3wt%, adhesion, compatibility, and haze increase to the adherend to be coated. Since there is such a poor problem, the amount of the leveling agent is preferably maintained in the range of 0.1 to 0.3wt% of the total ultraviolet curable antistatic coating agent.

The organic solvent, which is the dilution solvent, has a function of dilution and coating property of the antistatic coating agent, and specific examples thereof include alcohols, acetates, ketones, aliphatic, aromatic, and cyclo aromatic solvents.

When the amount of the organic solvent, which is a diluent solvent, is less than 10wt%, the viscosity of the coating agent is high, resulting in coating film thickness control and poor coating properties, and when it exceeds 70wt%, the solid content of the coating agent is low and the coating film thickness is low. Since there is a problem of control, it is preferable to keep the amount of the organic solvent in the range of 10 to 70wt% in the total ultraviolet curable antistatic coating agent.

The photoinitiator is a radical polymerization of the oligomers and monomers listed above, the initiator has a function of absorbing ultraviolet light to advance the reaction, specific examples thereof include Diethoxy Acetophenone, Hydroxy Acetophenone, a-Amino Acetophenone, One or two or more selected from Benzoin Ether, Benzyl Dimethyl Ketal, BenzoPhenone, Thioxanthone, and 2-ETAQ (2-EthylAnthraquinone) are used.

When the amount is less than 1wt%, it is difficult to form sufficient free radicals by the initiator during the coating process of the thin film (10um or less), and thus there is a problem such as deterioration of mechanical properties due to the presence of unreacted material in photopolymerization. In case of exceeding, there is a problem of deterioration of mechanical properties due to the formation of excess radicals and the formation of a large amount of low molecular weight, and the amount of the organic solvent used is in the range of 1 to 15wt% of the total UV curable antistatic coating agent. It is desirable to maintain.

Antistatic coating material coated with UV curable antistatic coating

As the coating material is made by coating a plastic material using the ultraviolet curable antistatic coating agent,

After coating the UV-curable antistatic coating on the plastic material using the # 2 ~ 8 Bar-coater, and then sufficiently dried the solvent for 40 seconds ~ 2 minutes in the temperature range of 80 ~ 150 ℃ UV UV by UV fusion system curing machine H bulb -Anti-coating material can be obtained by photopolymerization with a dose of 200 ~ 800mJ / ㎠ at a irradiation intensity of 500 mW / ㎠ based on -A.

The irradiation amount is expressed by the amount of energy received per unit area, and in order to form a coating film, ultraviolet rays are absorbed to proceed with a radical polymerization reaction. Excessive ultraviolet absorption, on the other hand, can cause problems such as yellowing, discoloration and cracking, such as degradation or aging of coating coatings and adherends.

The colorless antistatic agent for an electronic material according to the present invention has great industrial applicability as it effectively removes static electricity that reacts sensitively to electronic products by using it as an antistatic agent for electronic products.

Claims (6)

delete delete delete delete delete Antistatic agent 0.1 ~ 10wt% composed of a mixture of 49 ~ 99wt% surfactant, 0.001 ~ 1wt% neutralizer, 0.9 ~ 50wt% fluorine-based lithium organic compound;
10 to 70 wt% of a polyfunctional oligomer or monomer;
Leveling agent 0.1-0.3wt%;
10 ~ 70wt% organic solvent which is a dilution solvent;
After coating the plastic material using an ultraviolet curable antistatic coating composition composed of a mixture of photoinitiator 1 ~ 15wt%, and then drying the solvent for 40 seconds to 2 minutes in the temperature range of 80 ~ 150 ℃, UV-A ( UltraViolet A) Antistatic material, characterized in that the antistatic coating by photopolymerization at a radiation dose of 200 ~ 800mJ / ㎠ with a 500 mW / ㎠ irradiation intensity.