Patent · US Active

Fluoropolymer dispersion containing no or little low molecular weight fluorinated surfactant

US8598267B2 · kind B2 · utility

0Cited by

161References

7Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

Michael C. Dadalas · Eggenfelden, DE
Rebekka Epsch · Berlin, DE
Friedrich Kloos · Mainz, DE
Leonard W. Harvey · Downingtown, US

Key dates

Filing date	Sep 7, 2007
Grant date	Dec 3, 2013
Priority date	—
Expiry date	Apr 18, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K5/42
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention provides a fluoropolymer dispersion comprising fluoropolymer particles having an average particle size of 10 to 400 nm dispersed in water whereby the dispersion is free of fluorinated surfactant having a molecular weight of less than 1000 g/mol or contains the fluorinated surfactant having a molecular weight of less than 1000 g/mol in an amount of not more than 0.025% by weight based on the total weight of solids in the dispersion. The dispersion further comprises a non-ionic surfactant and an anionic surfactant selected from fluorinated anionic surfactants having a molecular weight of at least 1000 g/mol, non-fluorinated anionic surfactants and mixtures thereof.

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