Patent · US Active

Aqueous process for making fluoropolymers

US8080621B2 · kind B2 · utility

11Cited by

10References

11Claims

0Family size

Assignee

Arkema Inc. · US

Inventors

Ramin Amin-Sanayei · Malvern, US
Mehdi Durali · West Chester, US
Patrick Kappler · Écully, FR
Greylan Burch · Runnemede, US

Key dates

Filing date	Dec 8, 2006
Grant date	Dec 20, 2011
Priority date	—
Expiry date	Oct 3, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L71/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A novel aqueous polymerization process for making fluoropolymer dispersions is disclosed in which non-ionic non-fluorinated emulsifier is used to produce fluoropolymer emulsions. The emulsifiers contain blocks of polyethylene glycol, polypropylene glycol and/or polytetramethylene glycol. The process and fluoropolymer produced contain no fluorinated surfactant. The fluoropolymers have excellent resistance to discoloration.

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