Composition of polythiophene-based conductive polymers having high conductivity, transparency, waterproof property and a membrane prepared using the same
View Patent ↗The present invention relates to a polythiophene-based conductive polymer composition having high conductivity, transparency, waterproof property and durability, and a polymer membrane prepared by using the same. In particular, 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 among a polyester, a polyurethane resin and an alkoxy silane in a predetermined mixed ratio. The membrane prepared using the same has a high conductivity of less than 1 kΩ/m 2 and a high transparency of higher than 95%, thus being applicable to of an anti-static film, a film for touch panel, a film for higher or lower electrode, a film for inorganic EL and a film for display electrode.
1. A polythiophene-based conductive polymer composition, which comprises:
(i) an aqueous solution of a polythiophene-based conductive polymer,
(ii) an alcohol-based organic solvent,
(iii) an aprotic highly-dipolar solvent,
(iv) a melamine resin, and
(v) ethylene glycol as a dispersion stabilizer.
2. A polythiophene-based conductive polymer composition, which comprises:
(i) an aqueous solution of a polythiophene-based conductive polymer,
(ii) an alcohol-based organic solvent,
(iii) an aprotic highly-dipolar solvent,
(iv) a melamine resin,
(v) a polyester as a binder, and
(vi) ethylene glycol as a dispersion stabilizer.
3. The polythiophene-based conductive polymer composition of claim 1 , which comprises:
(i) 20-70 wt % of an aqueous solution of a polythiophene-based conductive polymer,
(ii) 10-75 wt % of an alcohol-based organic solvent,
(iii) 1-10 wt % of an aprotic highly-dipolar solvent,
(iv) 1-10 wt % of a melamine resin, and
(v) ethylene glycol as a dispersion stabilizer.
4. The polythiophene-based conductive polymer composition of claim 2 , which comprises:
(i) 20-70 wt % of an aqueous solution of a polythiophene-based conductive polymer,
(ii) 10-75 wt % of an alcohol-based organic solvent,
(iii) 1-10 wt % of an aprotic highly-dipolar solvent,
(iv) 1-10 wt % of a melamine resin,
(v) 0.1-5 wt % of a polyester as a binder, and
(vi) ethylene glycol as a dispersion stabilizer.
5. The polythiophene-based conductive polymer composition of claim 1 , which comprises:
(i) 20-70 wt % of an aqueous solution of a polythiophene-based conductive polymer,
(ii) 10-75 wt % of an alcohol-based organic solvent,
(iii) 1-10 wt % of an aprotic highly-dipolar solvent, and
(iv) 1-10 wt % of a melamine resin,
wherein the aprotic highly-dipolar solvent is a poly(propylene carbonate) or a dimethyl sulfoxide.
6. The polythiophene-based conductive polymer composition of claim 2 , which comprises:
(i) 20-70 wt % of an aqueous solution of a polythiophene-based conductive polymer,
(ii) 10-75 wt % of an alcohol-based organic solvent,
(iii) 1-10 wt % of an aprotic highly-dipolar solvent,
(iv) 1-10 wt % of a melamine resin, and
(v) 0.1-5 wt % of a polyester as a binder
wherein the aprotic highly-dipolar solvent is a poly(propylene carbonate) or a dimethyl sulfoxide.