Pulverförmige Zusammensetzung auf Basis von Fluoriertem Polymer

Details

Veröffentlichungs-Nr.

EP4737525

Anmeldetag

5. November 2024

Veröffentlichung

6. Mai 2026

Rechtsraum

EP

Abstract

The present invention relates to a composition, preferably in powder form, comprising a polymer P1 comprising recurring units derived from vinylidene fluoride and recurring units derived from a monomer M1 selected from the group consisting of vinylidene fluoride, hexafluoropropene, tetrafluoroethylene, chlorotrifluoroethylene, vinyl fluoride, pentafluoropropene, tetrafluoropropene, trifluoroethylene, 1,2-difluoroethylene and perfluoroalkyle vinyl ethers, perfluoro(1,3-dioxole), perfluoro(2,2-dimethyl-1,3-dioxole) (PDD), a monomer of formula CF₂=CFOCF₂CF(CF₃)OCF₂CF₂X wherein X is SO₂F, CO₂H, CH₂OH, CH₂OCN or CH₂OPO₃H; a monomer of formula CF₂=CFOCF₂CF₂SO₂F; a monomer of formula F(CF₂)nCH₂OCF=CF₂ wherein n is 1, 2, 3, 4 or 5; a monomer of formula R¹CH₂OCF=CF₂ wherein R¹ is hydrogen atom or F(CF₂)m and m is 1, 2, 3 or 4; a monomer of formula R²OCF=CH₂ wherein R² is F(CF₂)p et p is 1, 2, 3 or 4; perfluorobutylethylene (PFBE); trifluoropropene, hexafluoroisobutylene, perfluorobutylethylene, bromotrifluoroethylene, chlorofluoroethylene, chlorotrifluoropropene and 2-trifluoromethyl-3,3,3-trifluoro-1-propene or mixture thereof; characterized in that the particles of said polymer P1 have a Dv99 size distribution lower than 89 microns and a DvlO size distribution greater than 1.5 microns and in that said polymer P1 has a melting temperature Tm greater than 163.04 - 1.9628*x ; wherein x is the weight content of said fluorinated monomer M1 expressed as percent based on the total weight of said polymer P1; the melting temperature being measured by DSC according to the ASTM E794-06 (2018) standard test method.

Anmelder

Firma

ARKEMA FRANCE

Land

🇫🇷 Frankreich