SULFONATED ARYL-SUBSTITUTED POLYPHENYLENE ETHER ION EXCHANGE MEMBRANES

• US 3,528,858 A
• Filed: 12/04/1968
• Issued: 09/15/1970
• Est. Priority Date: 12/04/1968
• Status: Expired due to Term

• Current Assignee: United Technologies Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Original Assignee: Allan S. Hay, Russell B. Hodgdon Jr
• Inventors: Hodgdon, Russell B. Jr., Hay, Allan S.
• Application Number:
  US04/785,010
• Time in Patent Office: 650 Days
• US Class Current: 429/493
• CPC Class Codes: C08G 65/485 Polyphenylene oxides
• CPC Class Codes: C08J 2371/12 Polyphenylene oxides
• CPC Class Codes: C08J 5/2243 obtained by introduction of active groups capable of ion-exchange into compounds of the type C08J5/2231
• CPC Class Codes: H01M 8/1025 having only carbon and oxygen, e.g. polyethers, sulfonated polyetheretherketones [S-PEEK], sulfonated polysaccharides, sulfonated celluloses or sulfonated polyesters
• CPC Class Codes: Y02E 60/50 Fuel cells
• CPC Class Codes: Y10S 525/905 Polyphenylene oxide

Claims