Patent · US Active

Buffer compositions

US7700008B2 · kind B2 · utility

4Cited by

9References

2Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Che-Hsiung Hsu · Wilmington, US
Hjalti Skulason · Lompoc, US
Mark T. Martello · San Clemente, US

Key dates

Filing date	Jun 28, 2006
Grant date	Apr 20, 2010
Priority date	—
Expiry date	Aug 15, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E10/549
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.