Patent · US Expired

Preparation of polypyrroles, and films obtained by this method

US4569734A · kind A · utility

25Cited by

2References

9Claims

0Family size

Assignee

BASF SE

Inventors

Herbert Naarmann · Wattenheim, DE
Johann Nickl
Gernot Kohler · Ludwigshafen, DE

Key dates

Filing date	May 23, 1984
Grant date	Feb 11, 1986
Priority date	—
Expiry date	May 23, 2004

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Polypyrroles are prepared by electrochemical polymerization, in particular anodic oxidation, of pyrrole alone or together with comonomers, in an aqueous electrolyte solvent which consists of not less than 50% by weight of water, in the presence of aromatic sulfonic acids and/or their salts as conductive salts. The process gives polypyrrole films which have good mechanical properties and high electrical conductivities.

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