Patent · US Expired

Fluoropolymers from tetrafluoroethylene and perfluoro(alkoxyalkyl vinyl) ether

US7060772B2 · kind B2 · utility

5Cited by

22References

7Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

Klaus Hintzer · Woodbury, US
Ralph Kaulbach · Emmerting, DE
Friedrich Kloos · Mainz, DE
Werner Schwertfeger · Altötting, DE

Key dates

Filing date	Sep 20, 2001
Grant date	Jun 13, 2006
Priority date	—
Expiry date	Nov 25, 2021

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F214/26
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A fluoropolymer having a melting point of at least 160° C. is provided wherein the fluoropolymer is derived from tetrafluoroethylene as the major component, one or more perfluoro vinyl ethers as the minor component, the perfluoro vinyl ether having the formula CF2═CFO(CF2)nORf wherein n is from 2 to 6 and Rf is a perfluoroalkyl group having 1 to 6 carbon atoms, and optionally a perfluoro alkyl vinyl ether having from 1 to 5 carbon atoms in the alkyl radical.

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