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:
Dec. 09, 2025
Filed:
Jun. 03, 2022
Agfa-gevaert NV, Mortsel, BE;
Roald Herckens, Mortsel, BE;
Johan Loccufier, Mortsel, BE;
Agfa-Gevaert NV, Mortsel, BE;
Abstract
A polythiophene dispersion including: (a) a polythiophene copolymer of a first monomer according to Formula I and a second monomer to Formula II, wherein A represents a substituted or unsubstituted Cto Calkylene bridge further functionalized with at least one functional group selected from the group consisting of a sulfonic acid or salt thereof, a phosphonic acid or salt thereof, a phosphate ester or salt thereof, a sulfate ester or salt thereof and a carboxylic acid or salt thereof; B represents a substituted or unsubstituted Cto Calkylene bridge with the proviso that B is not further functionalized with a pH responsive group; and a molar ratio of the first monomer to the second monomer is from 1/4 to 4/1, (b) a polymeric polyanion wherein at least 75 mol % of the monomeric units of the polymeric polyanion are functionalized with a functional group selected from the group consisting of a sulfonic acid or salt thereof, a phosphonic acid or salt thereof, a phosphate ester or salt thereof, a sulfate ester or salt thereof and a carboxylic acid or salt thereof, characterized in that a molar ratio of the functional groups of the polyanion to the sum of the first and second monomers of the polythiophene copolymer is from 1.1 to 1.75.