Patent · US Expired

Method of increasing the electrical conductivity of cellulose-based materials or other impregnable materials

US4521450A · kind A · utility

24Cited by

1References

10Claims

0Family size

Assignee

Asea Aktiebolag · SE

Inventors

Robert Bjorklund · Linköping, SE
Hans Gustavsson
Ingemar Lundstrom · Linköping, SE
Bertil Nygren · Västerås, SE

Key dates

Filing date	Jun 20, 1983
Grant date	Jun 4, 1985
Priority date	—
Expiry date	Jun 20, 2003

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H17/34
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The electrical conductivity of solid, impregnable materials, such as cellulose-based insulating materials, can be increased by supplying to the solid impregnable material a substance with the ability, during polymerization of a pyrrole compound comprising at least one of the substances pyrrole and N-methylpyrrole, to give a polymer with higher electrical conductivity than the solid impregnable material, as well as a pyrrole compound of the kind stated, whereafter the pyrrole compound is transformed into a polymer in the solid, impregnable material.

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