Bifunctional fluorinated polymers comprising a plurality of (per)fluoropolyether segments

US10179836B2 · kind B2 · utility

Assignee

• SOLVAY SPECIALTY POLYMERS ITALY S.P.A. · IT

Inventors

• Claudio Adolfo Pietro Tonelli · Sesto San Giovanni, IT
• Solange Barbieri · Baranzate, IT
• Ivan Wlassics · Albenga, IT
• Letanzio Bragante · Padova, IT
• Giuseppe Marchionni · Milano, IT

Key dates

• Filing date: Nov 23, 2015
• Grant date: Jan 15, 2019
• Expiry date: Nov 23, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10M2213/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A polymer [polymer (P)] comprising a plurality of (per)fluoropolyether (PFPE) segments [segments (SRF)] joined together by hydrogenated (poly)ether segments [segments (SH)], said polymers (P) having two end groups [groups (E)], each group (E) comprising a hydroxy or a leaving group, with the proviso that the hydrogenated (poly)ether segment (SH) is not a segment of formula —CH2OCH2 OCH2— is herein disclosed. Disclosed is also a method for the manufacture of polymer (P) and a polymer obtainable by full or partial fluorination of polymer (P). Polymer (P) and polymers obtainable therefrom by full or partial fluorination can be conveniently used in the manufacture of lubricant compositions or of compositions for imparting hydro-/oleo-repellence to substrates. Said polymers can also be used as intermediates for the manufacture of other polymers or block copolymers.