E.i. Dupont De Nemours and Company

Mark T Martello

Che-Hsiung Hsu

Hjalti Skulason

Buffer compositions comprising semiconductive oxide particles and at least one of (a) a fluorinated acid polymer and (b) a semiconductive polymer doped with a fluorinated acid polymer are provided. Semiconductive oxide particles include metal oxides and bimetallic oxides. Acid polymers are derived from monomers or comonomers of polyolefins, polyacrylates, polymethacrylates, polyimides, polyamides, polyaramides, polyacrylamides, polystrenes. The polymer backbone, side chains, pendant groups or combinations thereof may be fluorinated or highly fluorinated. Semiconductive polymers include polymers or copolymers derived from thiophenes, pyrroles, anilines, and polycyclic heteroaromatics. Methods for preparing buffer compositions are also provided.A buffer composition consisting essentially of semiconductive oxide particles wherein the semiconductive oxide particles comprise a bimetallic oxide selected from indium-tin oxide ('ITO'), indium-zinc oxide ('IZO'), gallium-indium oxide, and zinc-antimony double oxide and a fluorinated acid polymer wherein the fluorinated acid polymer has a formula according to Formula XV:

Buffer compositions

Electrically conductive polymer compositions are provided. The compositions are dispersed in an aqueous liquid medium having an oxygen content less than 10% of the saturated level. The compositions can be an electrically conductive polymer doped with a fluorinated acid polymer, an electrically conductive polymer in admixture with a fluorinated acid polymer, or mixtures thereof. The conductive polymer composition has a conductivity that changes by less than 10% in 30 days.

Conductive polymer compositions

Buffer compositions comprising semiconductive oxide particles and at least one of (a) a fluorinated acid polymer and (b) a semiconductive polymer doped with a fluorinated acid polymer are provided. Semiconductive oxide particles include metal oxides and bimetallic oxides. Acid polymers are derived from monomers or comonomers of polyolefins, polyacrylates, polymethacrylates, polyimides, polyamides, polyaramids, polyacrylamides, polystyrenes. The polymer backbone, side chains, pendant groups or combinations thereof may be fluorinated or highly fluorinated. Semiconductive polymers include polymers or copolymers derived from thiophenes, pyrroles, anilines, and polycyclic heteroaromatics. Methods for preparing buffer compositions are also provided.

Growing community of inventors

Goleta, CA, United States of America

Mark T Martello