公开(公告)号：US10364514B2

公开(公告)日：2019-07-30

申请号：US14905443

申请日：2014-07-15

Applicant: SOLVAY SA

Inventor： Julio A. Abusleme ,  Giambattista Besana ,  Mattia Bassi ,  Christine Hamon ,  Chiara Gualandi ,  Maria Letizia Focarete ,  Andrea Zucchelli

IPC: D01F6/32 ,  B01D71/32 ,  C08F214/18 ,  D04H1/4318 ,  D04H1/728 ,  D01D5/00 ,  D01F1/10 ,  D01F6/48 ,  B01D67/00 ,  B01D71/76 ,  D02J1/00 ,  H01M10/0525 ,  H01M2/16 ,  H01M10/052

Abstract: The present invention pertains to a process for manufacturing one or more fluoropolymer fibers, said process comprising the following steps: (i) providing a liquid composition [composition (C1)] comprising: —at least one fluoropolymer comprising at least one hydroxyl end group [polymer (FOH)L and —a liquid medium comprising at least one organic solvent [solvent (S)]; (ii) contacting the composition (C1) provided in step (i) with at least one metal compound [compound (M)] of formula (I) here below: X4−mAYm (I) wherein X is a hydrocarbon group, optionally comprising one or more functional groups, m is an integer from 1 to 4, A is a metal selected from the group consisting of Si, Ti and Zr, and Y is a hydrolysable group selected from the group consisting of an alkoxy group, an acyloxy group and a hydroxyl group, thereby providing a liquid composition [composition (C2)]; (iii) submitting to at least partial hydrolysis and/or polycondensation the composition (C2) provided in step (ii) thereby providing a liquid composition [composition (C3)] comprising at least one fluoropolymer hybrid organic/inorganic composite; (iv) processing the composition (C3) provided in step (iii) by electrospinning thereby providing one or more fluoropolymer fibers; (v) drying the fluoropolymer fiber(s) provided in step (iv); and (vi) optionally, submitting to compression the fluoropolymer fiber(s) provided in step (v) at a temperature comprised between 50° C. and 300° C. The invention also pertains to a process for the manufacture of said fluoropolymer fiber(s) and to uses of said fluoropolymer fiber(s) in various applications.