Patent · US Expired

Intrinsically conductive polymer in the form of a dispersible solid, its manufacture and its use

US5567355A · kind A · utility

46Cited by

5References

19Claims

0Family size

Assignee

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

Inventors

Bernhard Wessling · Tremsbüttel, DE
Harald Volk · Bargteheide, DE
Susanne Bl attner · Hamburg, DE

Key dates

Filing date	May 12, 1993
Grant date	Oct 22, 1996
Priority date	—
Expiry date	May 12, 2013

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2982
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

An intrinsically conductive polymer is in the form of a dispersible solid of primary particles with a specific surface area according to BET of >15 m.sup.2 /g and with an average diameter of less than 500 nm, in which preferably not more than 20% of aggregates with an average size >1 .mu.m are present in the particle size range >500 nm. For the manufacture of the polymer the polymerization is carried out in a solvent in which the appropriate monomer is soluble or colloidally dispersible, but in which the polymer that is formed is insoluble, whereby the temperature of the reaction mixture is not allowed to rise more than 5.degree. C. above the starting temperature.

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