MUMBAI, India, June 19 -- Intellectual Property India has published a patent application (202617057582 A) filed by E Ink Corporation on May 06, 2026, for Electrophoretic Media Comprising Cationic Charge Control Agent.
Inventor includes Bzowej, Eugene.
The application for the patent was published on June 05, 2026, under issue no. 23/2026.
Abstract: Electrophoretic media are disclosed containing a plurality of charged pigment particles, a charge control agent, and a non-polar liquid. The charge control agent (CCA) has a molecular structure comprising a quaternary ammonium functional group or an imidazolium cation, a hydrophobic tail, and a counter ion, the counter ion being an anion, the anion being a conjugate base of an acid, the acid having pKa of less than or equal to -2.5. The charge control agent (CCA) has the following formula IX, wherein R11 is a hydrophobic moiety comprising a functional group selected from the group consisting of poly(hydroxystearic acid), poly(ricinoleic acid), and poly(isobutylene), and wherein the counter ion is trifluoromethanesulfonate.
Disclaimer: Curated by HT Syndication.
