Patent · US Expired

Dispersible intrinsically conductive polymer and process for its manufacture

US5720903A · kind A · utility

23Cited by

9References

11Claims

0Family size

Assignee

Zipperling Kessler & Co. (GmbH & Co.) · DE

Inventors

Bernhard Wessling · Tremsbüttel, DE
Holger Merkle · Ahrensburg, DE
Susanne Blattner · Hamburg, DE

Key dates

Filing date	Nov 17, 1995
Grant date	Feb 24, 1998
Priority date	—
Expiry date	Nov 17, 2015

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09D5/24
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A dispersible, intrinsically conductive polymer having an electrical conductivity (measured in a 4-point measuring cell on a powder pellet) of 2.5.times.10.sup.1 to 2.5.times.10.sup.5 S/cm is obtained when a dispersible intrinsically conductive polymer in powder form having a starting conductivity of 1 to 5 S/cm is rubbed and/or dispersed in the presence of a non-polymeric polar substance applying sufficient shear forces until the desired increased electrical conductivity is reached.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.