# US 7,608,659 B2 · Conductive material mixed composition

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- Number: US 7,608,659 B2
- Document ID: US7608659B2
- Status: Granted
- Kind: B2
- Application number: 12/140,530
- Filed: 2008-06-17
- Published: 2009-03-19
- Granted: 2009-10-27
- Earliest claimed: 2006-02-09
- Assignees: Adeka Corporation
- Inventors: Takayuki Taki; Atsuo Tomita; Hiroto Asano
- Web page: https://patentgrep.com/patent/US7608659B2

## CPC

- C08F 220/36: containing oxygen in addition to the carboxy oxygen {, e.g. 2-N-morpholinoethyl (meth)acrylate or 2-isocyanatoethyl (meth)acrylate}
- C08F 2/44: Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
- C08F 20/36: containing oxygen in addition to the carboxy oxygen {, e.g. 2-N-morpholinoethyl (meth)acrylate or 2-isocyanatoethyl (meth)acrylate}
- C08F 220/1806: {C6-(meth)acrylate, e.g. (cyclo)hexyl (meth)acrylate or phenyl (meth)acrylate}
- C08F 220/1807: {C7-(meth)acrylate, e.g. heptyl (meth)acrylate or benzyl (meth)acrylate}
- C08F 220/1818: {C13or longer chain (meth)acrylate, e.g. stearyl (meth)acrylate}
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS

## Abstract

A conductive material mixed composition obtained by synthesizing a piperidyl group-containing high-molecular-weight polymer or copolymer that is composed of the constitutional unit represented by general formula (1) below and insoluble in tetrahydrofuran (THF) by polymerization in a liquid phase, immediately followed by mixing a conductive material with the polymer or copolymer in the liquid phase: wherein R1 represents a hydrogen atom, a hydroxyl group, an oxyl radical, an alkyl group having 1 to 18 carbon atoms, or an alkoxy group having 1 to 18 carbon atoms; R2 and R3 each independently represent a hydrogen atom or a methyl group; R4 represents a hydrogen atom, an alkali metal atom, an alkyl group having 1 to 50 carbon atoms, an alkenyl group having 1 to 50 carbon atoms, an alkyl group having 1 to 50 carbon atoms, or a haloalkyl group having 1 to 50 carbon atoms; n represents a number of not less than 30; and m represents 0 or a positive number.

## Claims

### Claim 1

A process of producing a conductive material mixed composition comprising the step of synthesizing a piperidyl group-containing high-molecular-weight polymer or copolymer that is composed of the constitutional unit represented by general formula (1) below and insoluble in tetrahydrofuran (THF) by polymerization in a solvent so that the synthesized polymer or copolymer is dissolved in the solvent, and immediately followed by mixing a conductive material with the polymer or copolymer dissolved in the solvent to form a homogeneous mixture:
wherein R1 represents a hydrogen atom, a hydroxyl group, an oxyl radical, an alkyl group having 1 to 18 carbon atoms, or an alkoxy group having 1 to 18 carbon atoms; R2 and R3 each independently represent a hydrogen atom or a methyl group; R4 represents a hydrogen atom, an alkali metal atom, an alkyl group having 1 to 50 carbon atoms, an alkenyl group having 1 to 50 carbon atoms, an aralkyl group having 1 to 50 carbon atoms, or a haloalkyl group having 1 to 50 carbon atoms; n represents a number of 30 or greater; and m represents 0 or a positive number.

### Claim 2 (depends on 1)

The process according to claim 1, wherein the conductive material is a carbon material.

### Claim 3 (depends on 2)

The process according to claim 2, wherein the carbon material is selected from acetylene black and Ketjen black.

### Claim 4 (depends on 1)

The process according to claim 1, wherein the mass ratio of the piperidyl group-containing high-molecular-weight polymer or copolymer to the conductive material is, as represented by former/latter, in the range of 99/1 to 10/90.

### Claim 5 (depends on 1)

The process according to claim 1, wherein the mass ratio of the piperidyl group-containing high-molecular-weight polymer or copolymer to the conductive material is, as represented by former/latter, in the range of 90/10 to 30/70.

### Claim 6 (depends on 1)

The process according to claim 1, wherein the mass ratio of the piperidyl group-containing high-molecular-weight polymer or copolymer to the conductive material is, as represented by former/latter, in the range of 85/15 to 50/50.