The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 14, 1986
Filed:
Nov. 27, 1984
Applicant:
Inventor:
Peter J Smith, Cheshire, GB;
Assignee:
Imperial Chemical Industries PLC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; B29C / ; B29C / ; B29D / ;
U.S. Cl.
CPC ...
2642356 ; 2642358 ; 2642884 ; 2642893 ; 2642902 ; 264346 ; 264348 ; 521 27 ;
Abstract
An ion-exchange membrane of a sheet of an organic polymer comprising a plurality of fixed anonic groups associated with cations which comprise an organic group, e.g. quaternary ammonium cations, a process in which the membrane sheet is expanded by dry stretching to increase the surface area per unit weight of the membrane, a process for its preparation, a process for converting the stretched membrane to one suitable for use in an electrolytic cell, and that use.