Process for manufacturing a solution of a fluorocopolymer
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United States of America Patent
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Issued Date -
Apr 27, 2023
app pub date -
Mar 3, 2021
filing date -
Mar 3, 2020
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Abstract
A process for manufacturing a solution of a fluorocopolymer in a solvent, the solvent having a boiling point above 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 process including a step of mixing said fluoropolymer with the solvent in a reactor having a stirring spindle including at least one blade, at a mixing temperature ranging from 40° C. to 100° C., and at a blade tip stirring speed of greater than or equal to 0.1 m/s, until said polymer has dissolved in the solvent. Also, a solution of the copolymer in this solvent that includes no co-solvent having a boiling point strictly below 150° C. at 1013 hPa and/or a saturation vapour pressure strictly greater than 5 hPa at 20° C.
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