HK1125960B - Composition of polythiophene-based conductive polymers having high conductivity, transparency, waterproof property and a membrane prepared using the same - Google Patents
Composition of polythiophene-based conductive polymers having high conductivity, transparency, waterproof property and a membrane prepared using the same Download PDFInfo
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- HK1125960B HK1125960B HK09104158.1A HK09104158A HK1125960B HK 1125960 B HK1125960 B HK 1125960B HK 09104158 A HK09104158 A HK 09104158A HK 1125960 B HK1125960 B HK 1125960B
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Description
Prior Art
Polyaniline (PAN), polypyrrole (PPy), and Polythiophene (PT) are widely used as the conductive polymer. These polymers have been extensively studied because of their ease of polymerization and excellent electrical conductivity, thermal stability and oxidative stability.
Due to their electrical properties, these conductive polymers have been proposed to be used as electrodes of secondary batteries, materials for preventing electromagnetic waves, flexible electrodes, antistatic materials, anticorrosive coating materials, and the like. However, they have not been commercialized due to process difficulties, as well as poor thermal stability, weather resistance, water-proofing property and high cost. However, because of the strictly revised standards for electromagnetic shielding, these conductive polymers have recently drawn attention due to their potential as coating materials for electromagnetic shielding as well as dustproof and antistatic coating materials.
In particular, since polyethylene dioxythiophene (PEDT), i.e., polythiophene-based conductive polymer, was disclosed in U.S. Pat. nos. 5,035,926 and 5,391,472, the conductive polymer has recently begun to attract attention because of their use as a conductive coating material for the glass surface of braun tubes. Such conductive polymers have excellent transparency compared to other conductive polymers based on polyaniline, polypyrrole and polythiophene.
For the preparation of conventional polyethylenedioxythiophene, a polymeric acid salt such as polystyrene sulfonate is used as a doping material to improve conductivity, and a coating solution that can withstand water dispersion is prepared. The coating solution has excellent miscibility with an alcohol solvent and excellent workability, and can be suitably used for various coating materials on the surface of a braun tube (CRT) or a plastic film.
A representative example of such polyethylenedioxythiophene is Bayer's Baytron P (V4, grade 500). However, the polyethylenedioxythiophene conductive polymer needs to be coated with a low concentration of polyethylenedioxythiophene to achieve transparency higher than 95%. Therefore, according to the conventional method, it is difficult to achieve less than 1 k.OMEGA.m2The electrical conductivity of (1). In addition, a silane compound composed of alkoxysilane [ RSi (OR)1)3]A non-conductive silica sol prepared wherein R is a methyl, ethyl, propyl or isopropyl group, and R1Is a methyl or ethyl group, which when added to improve the adhesion of the film, further reduces the conductivity, making it more difficult to prepare a film having less than 1 k.OMEGA.m2A high conductivity membrane of (2). For the above reasons, the polymer has been used only as an antistatic coating material requiring relatively low conductivity. Further, Baytron P of Bayer is an aqueous dispersion, anddue to intramolecular SO3 -The radicals are susceptible to water even after the polymer film is formed. Therefore, the polymer film prepared by using Baytron P shows a drastic change in electrical properties when left for a long time or exposed to a high humidity environment, thus hindering commercialization.
In this regard, korean patent publication No. 2000-10221 discloses a conductive polymer composition comprising polyethylene dioxythiophene, an alcohol-based solvent, an amide solvent, a polyester-based resin binder. Korean patent publication No. 2005-66209 discloses a composition for coating a highly diffusive conductive film, which comprises polyethylene dioxythiophene, an alcohol-based solvent, an amide solvent, and a silane coupling agent.
Although the above-mentioned techniques disclose a transparent film having high transparency, adhesion and durability and having electrical properties of less than 1 k.OMEGA.m2The composition of (1), but the time-dependent conductive polymer film shows a drastic change in electrical properties, particularly under conditions of high temperature and high humidity, thus hindering commercialization thereof. Although the transparency is higher than 95%, it has been almost impossible to achieve high waterproof property, adhesion and durability and less than 1k Ω/m due to the above-mentioned defects2I.e. the standard required for preventing electromagnetic waves (TCO standard). It has also been impossible to apply a conductive film to a Personal Digital Assistant (PDA), a touch panel, or an inorganic EL electrode as well as a transparent electrode film.
Accordingly, the present inventors have conducted extensive studies on polythiophene-based conductive polymer having high conductivity as well as other high properties such as transparency, waterproof property and durability. As a result, the present invention has been finally completed based on the finding that a polymer composition comprising an aqueous solution of a polythiophene-based conductive polymer, an alcohol-based organic solvent, an amide-based organic solvent or an aprotic highly dipolar solvent, a melamine resin, and a binder selected from the group consisting of polyester, polyurethane, and alkoxysilane can improve conductivity and transparency without using a conventional stabilizerAnd other properties such as water resistance, adhesion, durability, film uniformity, and liquid stability. This is due to the fact that the amide-based organic solvent or aprotic highly dipolar solvent dissolves the polymer part of the aqueous solution of the polythiophene-based conductive polymer, thereby improving the connection and dispersion properties between the polythiophene-based conductive polymers and by preventing SO3 -The radicals combine with water to make NH in the melamine resin+SO in aqueous solution of radicals with a polythiophene-based conductive polymer (Baytron P)3 -The groups are combined, thereby improving the waterproofing performance and the time-dependent electrical stability as well as the adhesion between the adhesive and the transparent substrate and the durability of the conductive film.
Accordingly, it is an object of the present invention to provide a polythiophene-based conductive polymer composition showing improved conductivity and transparency and other highly improved properties such as waterproof property, adhesion, durability, film uniformity and liquid stability, and a polymer film prepared by using the composition herein.
Examples
The present invention is more specifically described by the following examples. The examples herein are intended only to illustrate the present invention and should not be construed as limiting the scope of the invention.
Examples 1-3 and comparative examples 1-6: amide-based organic solvent
The ingredients and amounts used are given in table 1. The aqueous solution of PEDT conductive polymer was vigorously agitated and then an alcohol solvent, an amide-based organic solvent, melamine resin, a binder, a stabilizer, and a slip (slip) and viscosity reducer were sequentially added at intervals of about 7 minutes. The mixture was stirred for about 4 hours to be uniform, thereby obtaining a solution composition.
The mixed solution composition was coated on a transparent substrate and dried in an oven (125 ℃) for about 5 minutes, thereby preparing a polythiophene polymer film. The dried film has a thickness of less than 5 μm. The properties of the polythiophene polymer membrane thus prepared were measured as described below, and the results are listed in table 2.
TABLE 1
Evaluation of Performance
(1) The conductivity was obtained by measuring the surface resistance using an ohm-meter (Mitsubishi Chemical, Loresta EP MCP-T360).
(2) The transparency was evaluated at 550 nm. The transparency of the coated substrate was expressed in terms of the transparency of the transparent substrate as 100% (Minolta, CM-3500 d).
(3) After ten times of taping with a tape tester, the adhesiveness was obtained by evaluating the change in surface resistance (tape was purchased from Nitto).
< resistance Change >
Phi is less than 50 omega/m2: good effect
②50-100Ω/m2: in general
③ higher than 100 omega/m2: difference (D)
(4) After storage at constant temperature and humidity (60 ℃, 90%, 10 days), the water-repellent properties were obtained by evaluating the change in surface resistance.
< resistance Change >
Phi is less than 50 omega/m2: good effect
②50-100Ω/m2: in general
③ higher than 100 omega/m2: difference (D)
(5) After storage at room temperature for one week, the liquid stability was evaluated according to the appearance of aggregation.
TABLE 2
| Performance of | Electrical conductivity (omega/m)2) | Transparency (%) | Water resistance | Adhesion Property | Uniformity of | Stability of liquid |
| Example 1 | 380 | 96 | Good effect | Good effect | Good effect | Good effect |
| Example 2 | 400 | 96 | Good effect | Good effect | Good effect | Good effect |
| Example 3 | 440 | 95 | Good effect | Good effect | Good effect | Good effect |
| Comparative example 1 | 350 | 96 | Difference (D) | Good effect | Good effect | Good effect |
| Comparative example 2 | 480 | 95 | Difference (D) | Good effect | Good effect | Good effect |
| Comparative example 3 | 650 | 94 | Difference (D) | Difference (D) | Difference (D) | Difference (D) |
| Comparative example 4 | 850 | 94 | Difference (D) | Good effect | Difference (D) | Difference (D) |
| Comparative example 5 | 900 | 94 | Difference (D) | Difference (D) | Difference (D) | Difference (D) |
| Comparative example 6 | 900 | 94 | Difference (D) | Good effect | Difference (D) | Difference (D) |
As shown in table 2, examples 1 to 3 using the melamine resin component according to the present invention showed improvements in conductivity and transparency as well as adhesion, film uniformity, liquid stability, and particularly water-repellent property, compared to comparative examples 1 to 6 using a stabilizer without using a melamine resin.
Examples 4-8 and comparative examples 7-9: amide-based organic solvent
A mixed solution composition was prepared as described in example 1 by using the ingredients shown in table 3.
The mixed solution composition was coated on a transparent substrate and dried in an oven (125 ℃) for about 5 minutes to prepare a polythiophene polymer membrane. The dried film has a thickness of less than 5 μm. The properties of the polythiophene polymer membrane thus prepared were measured as described below, and the results are listed in table 4.
TABLE 3
TABLE 4
| Performance of | Electrical conductivity (omega/m)2) | Transparency (%) | Water resistance | Adhesion Property | Uniformity of | Stability of liquid |
| Example 4 | 710 | 98 | Good effect | Good effect | Good effect | Good effect |
| Example 5 | 770 | 97 | Good effect | Good effect | Good effect | Good effect |
| Example 6 | 780 | 97 | Good effect | Good effect | Good effect | Good effect |
| Example 7 | 370 | 96 | Good effect | Good effect | Good effect | Good effect |
| Example 8 | 290 | 96 | Good effect | Good effect | Good effect | Good effect |
| Comparative example 7 | 368 | 97 | Difference (D) | Difference (D) | Good effect | Good effect |
| Comparative example 8 | 405 | 96 | Difference (D) | Good effect | Difference (D) | Good effect |
| Comparative example 9 | 420 | 94 | Difference (D) | Good effect | Good effect | Good effect |
As shown in table 4, examples 4 to 8 showed improvements in conductivity and transparency as well as adhesion, film uniformity, liquid stability, and particularly water-repellent property, compared to comparative example 7 in which the melamine resin and the binder were not used and comparative examples 8 to 9 in which the melamine resin was not used.
Examples 9-12 and comparative examples 10-12: aprotic highly dipolar solvent
A mixed solution composition was prepared as described in example 1 by using the ingredients shown in table 5.
The mixed solution composition was coated on a transparent substrate and dried in an oven (125 ℃) for about 5 minutes to prepare a polythiophene polymer membrane. The dried film has a thickness of less than 5 μm. The properties of the polythiophene polymer membrane thus prepared were measured as described below, and the results are listed in table 6.
TABLE 5
TABLE 6
| Performance of | Electrical conductivity (omega/m)2) | Transparency (%) | Water resistance | Adhesion Property | Uniformity of | Stability of liquid |
| Example 9 | 980 | 99 | Good effect | Good effect | Good effect | Good effect |
| Example 10 | 350 | 97 | Good effect | Good effect | Good effect | Good effect |
| Example 11 | 310 | 95 | Good effect | Good effect | Good effect | Good effect |
| Example 12 | 250 | 95 | Good effect | Good effect | Good effect | Good effect |
| Comparative example 10 | 348 | 97 | Difference (D) | Difference (D) | Good effect | Good effect |
| Comparative example 11 | 320 | 97 | Difference (D) | Difference (D) | Good effect | Difference (D) |
| Comparative example 12 | 405 | 95 | Difference (D) | Good effect | Difference (D) | Good effect |
As shown in table 6, examples 9 to 12 showed improvements in conductivity and transparency as well as adhesion, film uniformity, liquid stability, and particularly water-repellent property, as compared with comparative examples 10 to 11 in which the melamine resin and the binder were not used and comparative example 12 in which the melamine resin was not used.
Detailed Description
In one embodiment, the present invention relates to a polythiophene-based conductive polymer composition comprising: 1) an aqueous solution of a polythiophene-based conductive polymer; 2) an alcohol-based organic solvent; 3) an amide-based organic solvent; and 4) a melamine resin.
In another embodiment, the present invention relates to a polythiophene-based conductive polymer composition comprising: 1) an aqueous solution of a polythiophene-based conductive polymer; 2) an alcohol-based organic solvent; 3) an amide-based organic solvent; 4) a melamine resin; and 5) a binder selected from the group consisting of polyesters, polyurethanes, and alkoxysilanes.
In yet another embodiment, the present invention relates to a polythiophene-based conductive polymer composition comprising: 1) an aqueous solution of a polythiophene-based conductive polymer; 2) an alcohol-based organic solvent; 3) an aprotic highly dipolar solvent; and 4) a melamine resin.
In yet another embodiment, the present invention relates to a polythiophene-based conductive polymer composition comprising: 1) an aqueous solution of a polythiophene-based conductive polymer; 2) an alcohol-based organic solvent; 3) an aprotic highly dipolar solvent; 4) a melamine resin; and 5) a binder selected from the group consisting of polyesters, polyurethanes, and alkoxysilanes.
The following provides a detailed description of the invention.
The present invention relates to a polythiophene-based conductive polymer composition comprising an aqueous solution of a polythiophene-based conductive polymer, an alcohol-based organic solvent, an amide-based organic solvent or an aprotic highly dipolar solvent, a melamine resin, and a binder selected from the group consisting of polyester, polyurethane, and alkoxysilane.
Specifically, the present invention relates to a polythiophene-based conductive polymer composition comprising:
an amide-based organic solvent or aprotic highly dipolar solvent that partially dissolves a polymer portion in an aqueous solution of the polythiophene-based conductive polymer, thereby improving the connection and dispersion properties between the polythiophene-based conductive polymers;
melamine resin, its NH+SO in aqueous solution of radicals with a polythiophene-based conductive polymer (Baytron P)3 -The radicals being bound to each other by blocking SO3 -The groups combine with water to improve water resistance and time-dependent electrical stability; and
a binder selected from the group consisting of polyester, polyurethane and alkoxysilane, the binder improving adhesion to the transparent substrate and durability of the conductive film.
This polythiophene-based conductive polymer solution improves conductivity and transparency and other properties such as waterproof property, adhesion, durability, membrane uniformity and liquid stability without using a conventional stabilizer to which a sulfonic acid group of a polythiophene-based conductive polymer is linked.
Shows an electrical conductivity of less than 1k omega/m2Preferably 100. omega./m2-1kΩ/m2And a film or layer having a transparency of 95%, preferably 95 to 99%, and other properties such as waterproof property, adhesion, durability, film uniformity and liquid stability can be obtained by coating the polythiophene-based conductive polymer solution composition according to the present invention onto a transparent substrate such as glass or a synthetic resin film. Less than 1k omega/m2Is a very high value which meets the tco (tianstemannes Central organization) set by the swedish laborer conference, wherein the standards regarding the protection against electromagnetic waves are the most stringent.
The components of the polythiophene-based conductive polymer composition herein are described in detail below.
First, polyethylene dioxythiophene (PEDT, specifically Baytron P available from Bayer) is used in the present invention, although any polymer used in the field to which the present invention relates may be used as the polythiophene-based conductive polymer herein. PEDT is doped with polystyrene sulfonate (PSS) as a stabilizer (dopant) and shows excellent water solubility, thermal stability and weather resistance. In addition, the solids (PEDT and PSS) content is controlled to be 1.0 to 1.5 wt%, thereby optimizing the dispersion properties. PEDT is well miscible with water, alcohol, or a solvent having a high dielectric constant, and can be easily coated with a coating material diluted with such a solvent. In addition, the coated film shows excellent transparency compared to other conductive polymers such as polyaniline and polypyrrole.
Aqueous solutions of electrically conductive polymers based on polythiophenes are used in amounts of from 20 to 70% by weight, preferably from 26 to 67% by weight. If the amount is less than 20% by weight, less than 1 k.OMEGA.m.cannot be achieved2Despite the large use of amide-based organic solvents and Aprotic Highly Dipolar (AHD) solvents. If the amount is more than 70% by weight, particularly at longer wavelengths (more than 550nm), the transparency may be reduced to less than 95% due to the increased amount of colored conductive polymer.
As the alcohol-based organic solvent, C may be used alone or in combination1-C4Alcohols such as methanol, ethanol, propanol, isopropanol and butanol. In particular, methanol is preferably used as a main solvent to improve the dispersion property of the PEDT conductive polymer.
When used in combination with an amide-based organic solvent, the alcohol may be used in an amount of 10 to 75% by weight, preferably 10 to 71% by weight, more preferably 24 to 70% by weight. When used in combination with an aprotic highly dipolar solvent, the alcohol may be used in an amount of 5 to 68 wt%, more preferably 20 to 62 wt%. If the amount is less than 10 wt%, high dispersion performance of the coated film cannot be achieved although high conductivity can be obtained. If the amount is more than 75% by weight, the conductivity may be lowered and aggregation may be easily formed.
As the amide-based organic solvent, Formamide (FA), N-methylformamide (NMFA), N-Dimethylformamide (DMF), acetamide (AA), N-methylacetamide (NMAA), N-Dimethylacetamide (DMA), or N-methylpyrrolidone (NMP) is preferably used. These amide-based organic solvents have a intramolecular amide group [ R ] in common1(CO)NR2R3](wherein, R is H, CH3or-CH2CH2CH2-). While a single amide-based solvent may improve the conductivity of the PEDT conductive polymer, the combined use of two or more amide-based organic solvents is preferred to achieve less than 1k Ω/m2Surface resistance and transparency higher than 95%. Although the mixing ratio of the solvents can be appropriately determined, the preferred mixing ratio is 2: 1.
Further, as the aprotic highly dipolar solvent (AHD), dimethyl sulfoxide (DMSO) or propylene carbonate (propylene carbonate) can be used. Preferably, an aprotic highly dipolar solvent (AHD) and an amide-based solvent are used separately. The mixture is not preferred because it can only slightly increase the conductivity, and high transparency and long-term liquid stability cannot be achieved.
A significant increase in conductivity cannot be achieved using aprotic highly dipolar solvents (AHD) alone. In order to improve the conductivity, it is preferable to use dispersion stabilizers such as 1, 2-Ethylene Glycol (EG), glycerin, and sorbitol. It is preferable to use the dispersion stabilizer in an amount of 1 to 10% by weight, preferably 4 to 10% by weight, relative to the amount of the polythiophene-based conductive polymer solution composition. If the amount is less than 4% by weight, high conductivity cannot be achieved. If the amount is more than 10% by weight, high temperature plasticization is required due to a high boiling point although high conductivity can be obtained.
It is preferred to use the amide-based organic solvent in an amount of 1 to 10% by weight, preferably 3 to 7% by weight, while the aprotic highly dipolar solvent is used in an amount of 1 to 10% by weight, preferably 4 to 8% by weight. If the amount is less than the above lower limit value (lower value), high conductivity cannot be achieved. If the amount is above the above upper limit value (highher value), high-temperature plasticization may be required because of an increase in the portion of the amide-based solvent having a high boiling temperature, although high conductivity may be achieved. High temperature plasticization can reduce the conductivity of the PEDT conductive polymer and can cause substrate deformation when only glass-free plastic is used as the substrate.
The PEDT conductive polymer solution herein includes a water-soluble or alcohol-soluble polymer resin as a binder to improve waterproof property, substrate adhesion and durability. A resin in an aqueous solution state is preferable because the PEDT conductive polymer solution is an aqueous dispersion. However, the waterproof property may be poor because the PEDT conductive polymer solution itself is an aqueous dispersion, and the SO in the solution is increased because an adhesive in an aqueous solution state is used to improve the adhesion3 -The group also readily binds water. Therefore, melamine resin is used as an essential component in the present invention to ensure high water-repellent performance. The melamine resin can improve the waterproof property and the time-dependent electrical stability due to NH in the melamine resin+SO in aqueous solution of radicals with a polythiophene-based conductive polymer (Baytron P)3 -The radicals combine to prevent SO3 -The radicals bind to water.
The melamine resin may be used in an amount of 1 to 10% by weight, preferably 1 to 8% by weight. If the amount is less than 1 wt%, the water-repellent property of the conductive film may be poor. If the amount is more than 10% by weight, although the waterproof property can be remarkably improved, the improvement of the electrical conductivity is limited.
The binder for improving adhesion and durability with the transparent substrate may be selected from polyester, polyurethane resin and alkoxysilane. In order to achieve higher adhesiveness, the above-mentioned adhesives may be used in combination. Particularly, when the polyethylene terephthalate film is subjected to a coating operation, it is preferable to use a polyester resin to improve adhesion to the substrate.
The binder may be used in an amount of 0.1 to 5% by weight, preferably 0.5 to 4% by weight. If the amount is less than 0.1 wt%, the adhesion to the substrate and the durability of the conductive film may be poor. If the amount is more than 5% by weight, the improvement of the conductivity is limited.
In addition, an additive for reducing viscosity and improving sliding property may be additionally added in an amount of 0.05 to 5 wt% to prevent blocking property of the coated surface (or to improve sliding property).
Meanwhile, the polythiophene conductive polymer solution composition herein having high conductivity, transparency, waterproof property and durability may be prepared by using a conventional method. The available methods can be divided into two groups; one group was performed by using an amide solvent and a melamine resin without an additional dopant, and the other group was performed by using an aprotic highly dipolar solvent (AHD) solvent without an additional dopant.
The solution composition thus prepared may be coated on the glass surface of a brown tube (TV, computer), or on a transparent substrate of a cast polypropylene (CPP) film, a polyethylene terephthalate (PET) film, and a polycarbonate and acrylic plate. It was dried in an oven (100-. The coating process may be performed as knife coating (bar coating), roll coating, flow coating, dip coating, or spin coating. The thickness of the coating is less than 5 μm.
The antistatic polymer film thus prepared satisfies TCO standards with respect to electromagnetic wave prevention, and can be applied to a transparent electrode film such as an upper electrode film or a lower electrode film of a touch screen and a film of an inorganic EL electrode requiring high conductivity, transparency, water-proofing property and durability.
Industrial applicability
As described above, the polymer film prepared by using the polythiophene-based conductive polymer solution composition of the present invention may be applied to: a film of an upper electrode or a lower electrode in a touch screen; transparent electrode films of displays such as films of inorganic EL electrodes; surface of TV Brownian tube and shielding layer in computer monitor for preventing electromagnetic wave, the film needs less than 1k omega/m2Conductivity, transparency higher than 95%, high water resistance and adhesion; but also to other glass, polycarbonate acrylic sheets, polyethylene terephthalate or cast polypropylene (CPP) films.
Claims (12)
1. A polythiophene-based conductive polymer composition comprising:
(i) an aqueous solution of a polythiophene-based conductive polymer,
(ii) an organic solvent based on an alcohol, and a solvent,
(iii) an amide-based organic solvent, and
(iv) a melamine resin.
2. A polythiophene-based conductive polymer composition comprising:
(i) an aqueous solution of a polythiophene-based conductive polymer,
(ii) an organic solvent based on an alcohol, and a solvent,
(iii) an organic solvent based on an amide, and a solvent,
(iv) a melamine resin, and
(v) a binder selected from the group consisting of polyesters, polyurethanes, and alkoxysilanes.
3. A polythiophene-based conductive polymer composition comprising:
(i) an aqueous solution of a polythiophene-based conductive polymer,
(ii) an organic solvent based on an alcohol, and a solvent,
(iii) an aprotic highly dipolar solvent, and
(iv) a melamine resin,
wherein the aprotic highly dipolar solvent is polypropylene carbonate or dimethylsulfoxide.
4. A polythiophene-based conductive polymer composition comprising:
(i) an aqueous solution of a polythiophene-based conductive polymer,
(ii) an organic solvent based on an alcohol, and a solvent,
(iii) an aprotic highly dipolar solvent which is a polar solvent,
(iv) a melamine resin, and
(v) a binder selected from the group consisting of polyesters, polyurethanes, and alkoxysilanes,
wherein the aprotic highly dipolar solvent is polypropylene carbonate or dimethylsulfoxide.
5. The polythiophene-based conductive polymer composition of claim 1, comprising:
(i)20 to 70 wt% of an aqueous solution of a polythiophene-based conductive polymer,
(ii)10-75 wt.% of an alcohol-based organic solvent,
(iii) 1-10% by weight of an amide-based organic solvent, and
(iv) 1-10% by weight of a melamine resin.
6. The polythiophene-based conductive polymer composition of claim 2, comprising:
(i)20 to 70 wt% of an aqueous solution of a polythiophene-based conductive polymer,
(ii)10-75 wt.% of an alcohol-based organic solvent,
(iii)1 to 10 wt.% of an amide-based organic solvent,
(iv)1 to 10% by weight of a melamine resin, and
(v)0.1 to 5% by weight of a binder selected from the group consisting of polyesters, polyurethanes and alkoxysilanes.
7. The polythiophene-based conductive polymer composition of claim 3, comprising:
(i)20 to 70 wt% of an aqueous solution of a polythiophene-based conductive polymer,
(ii)10-75 wt.% of an alcohol-based organic solvent,
(iii)1 to 10% by weight of an aprotic highly dipolar solvent, and
(iv) 1-10% by weight of a melamine resin,
wherein the aprotic highly dipolar solvent is polypropylene carbonate or dimethylsulfoxide.
8. The polythiophene-based conductive polymer composition of claim 4, comprising:
(i)20 to 70 wt% of an aqueous solution of a polythiophene-based conductive polymer,
(ii)10-75 wt.% of an alcohol-based organic solvent,
(iii) 1-10% by weight of an aprotic highly dipolar solvent,
(iv)1 to 10% by weight of a melamine resin, and
(v)0.1 to 5 wt% of a binder selected from the group consisting of polyesters, polyurethanes, and alkoxysilanes,
wherein the aprotic highly dipolar solvent is polypropylene carbonate or dimethylsulfoxide.
9. The polythiophene-based conductive polymer composition of any one of claims 3, 4, 7, and 8, further comprising a dispersion stabilizer selected from the group consisting of 1, 2-ethylene glycol, glycerol, and sorbitol.
10. The polythiophene-based conductive polymer composition of claim 9, wherein the dispersion stabilizer is contained in an amount of 1 to 10 wt%.
11. A conductive polymer film prepared by coating the composition of any one of claims 1-8 onto a substrate.
12. The conductive polymer film according to claim 11, which is used for producing an antistatic film, a film for a touch panel, a film for an upper electrode or a lower electrode, a film for an inorganic EL, and a film for a display electrode.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20060016893 | 2006-02-21 | ||
| KR10-2006-0016893 | 2006-02-21 | ||
| KR1020070017205A KR100844476B1 (en) | 2006-02-21 | 2007-02-21 | Composition of Polythiophene conduvtive polymers having high conductivity, transparency, waterproof property and membrane using them |
| PCT/KR2007/000891 WO2007097564A1 (en) | 2006-02-21 | 2007-02-21 | Composition of polythiophene-based conductive polymers having high conductivity, transparency, waterproof property and a membrane prepared using the same |
| KR10-2007-0017205 | 2007-02-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| HK1125960A1 HK1125960A1 (en) | 2009-08-21 |
| HK1125960B true HK1125960B (en) | 2011-07-15 |
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