公开(公告)号：EP4438632A1

公开(公告)日：2024-10-02

申请号：EP23305433.7

申请日：2023-03-29

申请人： ARKEMA FRANCE

发明人： GOLDBACH, James ,  ROUSSELLE, Brice ,  LABOUR, Thomas ,  FIORIO, Gaelle ,  BONNET, Anthony ,  ALLARD BRETON, Béatrice ,  BRUEL, Stéphanie

IPC分类号： C08F6/16 ,  C08F14/22 ,  F16L11/04 ,  C08F2/22

摘要： The invention relates to a process that results in a vinylidene fluoride polymer composition with a reduced level of residual impurities, notably total oxidizable carbon (TOC) and fluoride ions. Such improvements can be accomplished in a cost-effective manner through the combination of a polymer recipe that uses a low amount of or no surfactants and the isolation of the polymer, especially in a dewatering extruder. The invention also relates to the use of such a vinylidene fluoride polymer for conveying ultrapure water in high purity applications.