The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 28, 2006
Filed:
Oct. 30, 2003
Frans A. Audenaert, Kaprijke, BE;
Rudolf J. Dams, Antwerp, BE;
Lian S. Tan, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
The present invention provides the use of a fluorinated polyether composition as a surfactant, said fluorinated polyether composition comprising a mixture of fluorinated polyethers of the formula:(R)—X—Z   (I)wherein n is 1 or 2, w is 0 or 1, X is a divalent or trivalent organic linking group, Z is a polar group selected from the group consisting of an acid group or a salt thereof, an ammonium group, an amine-oxide group and an amphoteric group, and Rrepresents a perfluorinated polyether group of the formula:CFCFCF—O—[CF(CF)CFO]—CF(CF)—wherein k is at least 1;said mixture of fluorinated polyethers having a weight average molecular weight between 750 g/mol and 5000 g/mol and the amount of perfluorinated polyether groups in said mixture where k is 2 or less, is not more than 10% by weight of the total amount of perfluorinated polyether groups in said mixture.