PROCESS FOR PRODUCING AQUEOUS DISPERSION OF COMPOSITE OF POLY(3,4-DIALKOXYTHIOPHENE) WITH POLYANION

Title:

PROCESS FOR PRODUCING AQUEOUS DISPERSION OF COMPOSITE OF POLY(3,4-DIALKOXYTHIOPHENE) WITH POLYANION

Document Type and Number:

WIPO Patent Application WO/2007/058036

Kind Code:

A1

Abstract:

A process for producing an aqueous dispersion which contains a conductive polymer ingredient and is capable of forming a thin conductive film excellent in transparency and conductivity; and an aqueous dispersion obtained by the process. The process comprises a step in which a 3,4-dialkoxythiophene is polymerized in an aqueous medium in the presence of a polyanion with the aid of an oxidizing agent. In this step, the oxidizing agent is added by dropping a solution or dispersion of the oxidizing agent into the reaction mixture. Alternatively, the concentration of alkali metal ions in the reaction mixture in the polymerization step is kept at 400 ppm or lower.

Inventors:

MORITA YOSHIYUKI (JP)
CHIKUSA YASUO (JP)
MIYANISHI KYOKO (JP)
KIRCHMEYER STEPHAN (DE)
LOEVENICH WILFRIED (DE)

Application Number:

PCT/JP2006/320432

Publication Date:

May 24, 2007

Filing Date:

October 06, 2006

Export Citation:

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Assignee:

NAGASE CHEMTEX CORP (JP)
STARCK H C GMBH (DE)
MORITA YOSHIYUKI (JP)
CHIKUSA YASUO (JP)
MIYANISHI KYOKO (JP)
KIRCHMEYER STEPHAN (DE)
LOEVENICH WILFRIED (DE)

International Classes:

C08G61/12; C08L25/18; C08L65/00

Domestic Patent References:

WO2004088672A1	2004-10-14
WO2004029128A2	2004-04-08

Foreign References:

JP2006028214A	2006-02-02
JP2004059666A	2004-02-26
JPH0790060A	1995-04-04
JPH06287454A	1994-10-11
JP2636968B2	1997-08-06
JPH0848858A	1996-02-20
JP2000153229A	2000-06-06
JP2004059666A	2004-02-26

Other References: