Patent · US Expired

Gasket assembly for membrane electrolysis cells

US4776940A · kind A · utility

1Cited by

6References

11Claims

0Family size

Assignee

Metallgesellschaft AG · DE

Inventors

Peter Andres · Ginsheim-Gustavsburg, DE
Manfred Bodenburg · Frankfurt am Main, DE
Wolfgang Turke · Schöneck, DE

Key dates

Filing date	Feb 16, 1988
Grant date	Oct 11, 1988
Priority date	—
Expiry date	Feb 16, 2008

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC25B9/60
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The gasket is disposed between the electrode frames, which are pressed against each other and are used in a membrane electrolysis for producing sodium solution, hydrogen and chlorine from an NaCl brine. The rim of the membrane is disposed between two parts of the gasket. At least one gasket part consists of a core frame, which is provided at least on one side with an attached sealing frame made of graphite. The core frame and the sealing frame are enclosed in a plastic film wrapper. The core frame may be made of asbestos and the plastic film wrapper may be made of polytetrafluoroethylene.

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