发明名称 |
RECOVERY OF FLUORINATED EMULSIFYING ACIDS FROM BASIC ANION EXCHANGERS |
摘要 |
HOE 79/F 902 RECOVERY OF FLUORINATED EMULSIFYING ACIDS FROM BASIC ANION EXCHANGERS of the disclosure: To elute fluorinated emulsifying acids, especially perfluoro-carboxylic acids, from basic anion exchangers a mixture of dilute mineral acid and polar organic solvents is used. The solvent should be miscible with water preferably to an extent of at least 40 %. By this process the required amount of eluent and the time of elution can be reduced while simultaneously the amount of recovered emulsifying acid can be improved. The process is especially suitable for the recovery of fluorinated emulsifiers in the coagulation or concentration of fluoropolymerlatices. |
申请公布号 |
CA1135283(A) |
申请公布日期 |
1982.11.09 |
申请号 |
CA19800344953 |
申请日期 |
1980.02.01 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
KUHLS, JURGEN |
分类号 |
B01D15/00;B01D15/04;B01J20/34;B01J47/00;B01J49/00;C07C51/47 |
主分类号 |
B01D15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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