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:
Feb. 17, 2026
Filed:
Aug. 06, 2020
Ionic copolymer, curable membrane precursor composition, membrane composition, and electronic device
3m Innovative Properties Company, St. Paul, MN (US);
Mark J. Pellerite, Woodbury, MN (US);
Claire Hartmann-Thompson, Lake Elmo, MN (US);
Marina M. Kaplun, Woodbury, MN (US);
Justin P. Meyer, Oakdale, MN (US);
John P. Baetzold, North St. Paul, MN (US);
James P. Dizio, St. Paul, MN (US);
John Christopher Thomas, St. Paul, MN (US);
Steven D. Solomonson, Shoreview, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A cationic copolymer comprises the divalent monomer units: wherein: each Arindependently represents phenylene; each L independently represents a direct bond or wherein each Rindependently represents an alkyl group having 1 to 4 carbon atoms, and each Rindependently represents an alkylene group having from 1 to 6 carbon atoms, and each Zrepresents a non-interfering anion; each Arindependently represents an optionally substituted divalent aryl ring, with the proviso that if L represents a direct bond, then Arrepresents an optionally substituted cationic divalent aryl ring accompanied by Z; each Rindependently represents H or an alkyl group having 1 to 6 carbon atoms; and each D independently represents a direct bond or Ar, wherein adjacent D and L are not both direct bonds, and wherein if L is a direct bond, then D is Ar. The cationic copolymer can be free-radially cured and used in a membrane.