Patent · US Expired

Explosion-free process for the production of polytetrafluoroethylene

US7253240B2 · kind B2 · utility

0Cited by

13References

4Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

Klaus Hintzer · Woodbury, US
Albert Killich · Altötting, DE
Gernot Lohr · Altötting, DE
Hans-Josef Staudt · Haiming, DE

Key dates

Filing date	Nov 29, 2001
Grant date	Aug 7, 2007
Priority date	—
Expiry date	Nov 29, 2021

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2438/01
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Use of non-water-soluble organic fluorinated compounds, which are gaseous under the polymerization conditions and act as chain transfer agent in the gas phase, as explosion suppressors in the emulsion polymerization of tetrafluoroethylene.

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