# US 8,541,541 B2 · Conductive block copolymers

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- Number: US 8,541,541 B2
- Document ID: US8541541B2
- Status: Granted
- Kind: B2
- Application number: 11/815,038
- Filed: 2006-03-03
- Published: 2008-07-17
- Granted: 2013-09-24
- Earliest claimed: 2005-03-07
- Assignees: Arkema Inc.
- Applicants: Gary S. Silverman; Thomas P. McAndrew; Scott C. Schmidt; David A. Mountz; Mark A. Aubart; Nicholas J. Rodak
- Inventors: Gary S. Silverman; Thomas P. McAndrew; Scott C. Schmidt; David A. Mountz; Mark A. Aubart; Nicholas J. Rodak
- Web page: https://patentgrep.com/patent/US8541541B2

## CPC

- C08L 65/00: Compositions of macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain (C08L7/00 - C08L57/00, C08L61/00 take precedence); Compositions of derivatives of such polymers
- C08F 290/06: Polymers provided for in subclass C08G
- C08F 293/005: {using free radical "living" or "controlled" polymerisation, e.g. using a complexing agent}
- C08G 61/124: {with a five-membered ring containing one nitrogen atom in the ring}
- C08G 61/126: {with a five-membered ring containing one sulfur atom in the ring}
- C08G 73/0266: {Polyanilines or derivatives thereof}
- C08L 33/10: Homopolymers or copolymers of methacrylic acid esters
- C08L 79/02: Polyamines
- C08F 2438/01: Atom Transfer Radical Polymerization [ATRP] or reverse ATRP
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

## Abstract

The invention relates to the synthesis of polythiophene (PAT) copolymers, and their use as conductive polymers in final applications. Specifically, copolymers of PAT with (meth)acrylates, or amides are useful as additives in blends of different polymer matrices in many commercial applications.

## Claims

### Claim 1

An electroconductive copolymer composition comprising a block copolymer having repeating segments of A and B and optionally C, in which A is selected from substituted or unsubstituted polythiophene, B comprises a methacrylic polymer, copolymer or terpolymer comprising 60 to 100 weight percent methyl methacrylate units, and C is selected from ethylenically unsaturated copolymerizable monomers other than methylmethacrylate, and wherein said block copolymer contains alkoxyamine compounds which are end-capping moieties.

### Claim 2 (depends on 1)

The electroconductive block copolymer of claim 1 having a regioregular structure of the A segments, which are electroconductive.

### Claim 3 (depends on 1)

A method of manufacturing an electroconductive block copolymer as described in claim 1 comprising using controlled radical polymerization initiators and/or coupling of functionalized copolymers.

### Claim 4 (depends on 3)

The method of claim 3 wherein the controlled radical polymerization initiator is an alkoxyamine.

### Claim 5 (depends on 1)

An electroconductive polymer formulation comprising:
a) from 0.01 to 70 percent by weight of said electroconductive block copolymer of claim 1; and
b) from 99.99 to 30 percent by weight of one or more polymers miscible with said electroconductive copolymer.

### Claim 6 (depends on 5)

An article formed from the electroconductive polymer formulation of claim 5.

### Claim 7 (depends on 6)

The article of claim 6 comprising an organic light emitting diode, a touch panel display, an electrostatic charge dissipation coating, and electromagnetic interference shielding coating, and electrical discharge underlayer for use in electron beam imaging, a conductive support for a substrate exposed to electron beam imaging, an acrylic display window, an electrostatic dissipating PA-11 or PA-12, an electroconductive polyvinylidene fluoride, a substrate for receiving electrostatic painting or electroplating, or a fiber or filament.

### Claim 8 (depends on 1)

An article comprising the electroconductive block copolymer composition of claim 1 comprising an organic light emitting diode, a touch panel display, an electrostatic charge dissipation coating, and electromagnetic interference shielding coating, and electrical discharge underlayer for use in electron beam imaging, a conductive support for a substrate exposed to electron beam imaging, an acrylic display window, an electrostatic dissipating PA-11 or PA-12, an electroconductive polyvinylidene fluoride, a substrate for receiving electrostatic painting or electroplating, or a fiber or filament.