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:
Aug. 07, 2007
Filed:
Jun. 03, 2004
Antonio Russo, Milan, IT;
Claudio Tonelli, Milan, IT;
Mario Visca, Alessandria, IT;
Solvay Solexis, S.p.A., Milan, IT;
Abstract
Carboxylic acids comprising perfluoropolyether chains, of formula:T—CFW—O—R—CFW—T  (I)wherein T, T, equal to or different from each other, are selected from the group formed of —CH—B—Y—(COOH), —CH(CF) O—Y(COOH), —F, —CF, —CF, —(CF)Cl, wherein B=—O— or —S—; Y=C—Calkylene chain, n=1-4; with the proviso that at least one of the two end groups T, Tbe —CH—B—Y—(COOH), —CH(CF)O—Y(COOH); W, W, equal to or different from each other, are —F or —CF; Ris a (per)fluoropolyoxyalkylene chain formed of one or more repeating units, statistically distributed along the chain, having a number average molecular weight in the range 500-10,000.