EP 4114889 A1 20230111 - METHOD FOR MANUFACTURING A SOLUTION OF A FLUORINATED COPOLYMER
Title (en)
METHOD FOR MANUFACTURING A SOLUTION OF A FLUORINATED COPOLYMER
Title (de)
VERFAHREN ZUM HERSTELLEN EINER LÖSUNG EINES FLUORIERTEN COPOLYMERS
Title (fr)
PROCÉDÉ DE FABRICATION D'UNE SOLUTION D'UN COPOLYMÈRE FLUORÉ
Publication
Application
Priority
- FR 2002120 A 20200303
- FR 2021050359 W 20210303
Abstract (en)
[origin: WO2021176180A1] The invention relates to a method for manufacturing a solution of a fluorinated copolymer in a solvent, the solvent having a boiling point greater than or equal to 150°C at 1013 hPa and/or a saturation vapour pressure less than or equal to 5 hPa at 20°C, the method comprising a step of mixing the fluorinated polymer with the solvent in a reactor having a stirring mechanism comprising at least one blade, at a mixing temperature ranging from 40°C to 100°C, and at a blade tip stirring speed greater than or equal to 0.1 m/s, until the polymer is dissolved in the solvent. The invention also relates to a solution of the copolymer in the solvent not comprising a co-solvent having a boiling point strictly less than 150°C at 1013 hPa and/or a saturation vapour pressure strictly greater than 5 hPa at 20°C.
IPC 8 full level
CPC (source: EP KR US)
B01J 19/18 (2013.01 - US); C08J 3/09 (2013.01 - EP US); C08J 3/11 (2013.01 - EP KR); C08J 2327/16 (2013.01 - EP KR US)
Citation (search report)
See references of WO 2021176180A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2021176180 A1 20210910; CN 115244111 A 20221025; EP 4114889 A1 20230111; FR 3107899 A1 20210910; FR 3107899 B1 20230421; JP 2023516387 A 20230419; KR 20220149712 A 20221108; TW 202140634 A 20211101; US 2023130819 A1 20230427
DOCDB simple family (application)
FR 2021050359 W 20210303; CN 202180019919 A 20210303; EP 21714646 A 20210303; FR 2002120 A 20200303; JP 2022552794 A 20210303; KR 20227033644 A 20210303; TW 110107620 A 20210303; US 202117908772 A 20210303