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:
Jul. 19, 2016
Filed:
Jun. 20, 2012
Claudio Adolfo Pietro Tonelli, Paderno D'adda, IT;
Simonetta Antonella Fontana, Milan, IT;
Marco Galimberti, Bollate, IT;
Piero Gavezotti, Milan, IT;
Claudio Adolfo Pietro Tonelli, Paderno D'adda, IT;
Simonetta Antonella Fontana, Milan, IT;
Marco Galimberti, Bollate, IT;
Piero Gavezotti, Milan, IT;
SOLVAY SPECIALTY POLYMERS ITALY S.P.A., Bollate (Milan), IT;
Abstract
The invention relates to (per)fluoropolyether block copolymers comprising: A) a fluoropolyoxyalkylene segment (chain R) comprising one or more units of formula (CHXCFCFO)— in which X is hydrogen or fluorine; B) a (per)fluoropolyoxyalkylene segment (chain Rf), that is to say a segment comprising recurring units having at least one catenary ether bond and at least one fluorocarbon moiety, said (per)fluoropolyoxyalkylene segment being different from chain Rand having a molecular weight higher than 400 g/mol. These copolymers are endowed with improves lubricant properties or with improved water and oil-repellence properties.