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Electrostatic coatings and articles comprising polythiophenes

A technology for polythiophene, products, applied in coatings, conductive coatings, transportation and packaging, etc., can solve problems such as low conductivity, low ICP load level, limited light transmittance, etc.

Inactive Publication Date: 2011-11-16
PLEXTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these coatings can have generally low ICP loading levels, limited light transmission and low electrical conductivity

Method used

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  • Electrostatic coatings and articles comprising polythiophenes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1A

[0056] Formulation of ESD Coatings

[0057] 60 mg of Plexcore MP (a soluble regioregular polythiophene purchased from Plextronics, Pittsburgh, PA) was dissolved in 7.44 g of DMF by heating and stirring. The solution was stirred vigorously for 30 minutes. 57 mg of p-toluenesulfonic acid were added and the solution was stirred vigorously for a further 30 minutes. 210 mg poly(4-vinylpyridine) was dissolved in 7.23 g DMF and stirred vigorously for 30 minutes. The two solutions were combined and stirred vigorously for 30 minutes. Pass the solution through a 0.45 micron syringe filter. 17 mg of dichlorodihydroquinone dissolved in 0.1 ml of DMF was injected into the mixture by syringe.

Embodiment 1B

[0059] Formulation of ESD Coatings

[0060] 60 mg of soluble regioregular polythiophene was dissolved in 7.44 g of DMF by heating and stirring. The solution was stirred vigorously for 30 minutes. 44 mg of p-toluenesulfonic acid were added and the solution was stirred vigorously for a further 30 minutes. 210 mg poly(4-vinylpyridine) was dissolved in 7.25 g DMF and stirred vigorously for 30 minutes. The two solutions were combined and stirred vigorously for 30 minutes. Pass the solution through a 0.45 micron syringe filter. 13 mg of dichlorodihydroquinone dissolved in 0.1 ml of DMF was injected into the mixture by syringe.

Embodiment 2

[0062] Application of paint

[0063] Films were prepared by spin casting on ozone-treated glass substrates. The film was spun at 350 rpm for 5 seconds to spread and 2000 rpm for 60 seconds to thin using a 1275 loading station. The film is annealed at a temperature of 80 to 170°C for 10 to 40 minutes, but typically the film is typically annealed at 110°C for 10 minutes. A typical film thickness observed is about 40 nm.

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Abstract

Electrostatic dissipation coatings based on regioregular polythiophenes include blends and block copolymers. The compositions can be soluble in organic solvents. Excellent film formation, transparency, stability, and conductivity control can be achieved.

Description

Background technique [0001] Electrostatic discharge or dissipation (ESD) is a common problem in many applications involving electronic devices that are becoming smaller and more complex. In many cases, coatings that can function as electrostatic discharge coatings are desired, especially in fine-structured applications that require a high degree of structural control. However, there are limitations to these ESD coatings, requiring multifunctional coatings that can meet specific performance requirements. Therefore, there is a need for coating systems which are multifunctional and which can be adjusted to a particular application. Although conductive polymers, sometimes referred to as intrinsically conducting polymers (ICPs), intrinsically conducting polymers, and conjugated polymers, can be used in these applications, in many cases , they do not offer full versatility. For example, they are limited by processing and instability issues in many cases. For example, the lack of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G75/00
CPCC09D5/24H01B1/127C09D165/00Y10T428/265C08G75/00H01B1/12
Inventor 克里斯托弗·格雷科布莱恩·伍德沃斯肖恩·P·威廉姆斯格伦·H·汤普森
Owner PLEXTRONICS