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:
Jan. 14, 2020
Filed:
Nov. 23, 2015
Solvay Specialty Polymers Italy S.p.a., Bollate, IT;
Claudio Adolfo Pietro Tonelli, Paderno D'adda, IT;
Ivan Wlassics, Garessio, IT;
Giuseppe Marchionni, Milan, IT;
Letanzio Bragante, Due Carrare, IT;
SOLVAY SPECIALTY POLYMERS ITALY S.P.A., Bollate (MI), IT;
Abstract
Disclosed are mixtures containing: mono- and bi-functional polymers [polymers (P-A) and (P—B)] comprising a plurality of (per)fluoropolyether segments [segments (S)] joined together by hydrogenated (poly)ether segments [segments (S)], said polymers having two ends, wherein one or both ends comprises a hydroxy or a leaving group; a non-functional polymer comprising a plurality of (per)fluoropolyether segments (S) joined together by hydrogenated (poly)ether segments (S), with the proviso that the hydrogenated (poly)ether segments (S) are not segments of formula —CHOCHOCH—. Disclosed are also monofunctional polymers (P-A) that can be isolated from such mixtures. Methods for the obtainment of the mixtures and for separating the polymers therein contained are also provided, as well as methods of using the mixtures or each polymer therein contained as intermediates or building blocks for the synthesis of other polymers or as ingredients of compositions.