发明名称 |
Method for purification of aqueous fluoropolymer emulsions, purified emulsions, and fluorine-containing finished articles |
摘要 |
The present invention provides a method of purifying an aqueous fluoropolymer emulsion by which fluorine-containing surfactants can be removed without lowering the dispersibility of the aqueous fluoropolymer dispersions. The present invention provides a method of purifying an aqueous fluoropolymer emulsion comprising; purifying an aqueous fluoropolymer emulsion by a specific technique of concentration wherein the aqueous fluoropolymer emulsion comprises a fluoropolymer and a fluorine-containing surfactant, said specific technique of concentration comprises concentration by phase separation, electric concentration and/or ion exchange concentration, and said concentration by phase separation, electric concentration and/or ion exchange concentration is carried out for removing the fluorine-containing surfactant.
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申请公布号 |
US7468403(B2) |
申请公布日期 |
2008.12.23 |
申请号 |
US20050536432 |
申请日期 |
2005.05.26 |
申请人 |
DAIKIN INDUSTRIES, LTD. |
发明人 |
NAKATANI YASUKAZU;ICHIKAWA KENJI |
分类号 |
C08L1/00;C08F6/16;C08F6/20;C08F14/18;C08F14/26 |
主分类号 |
C08L1/00 |
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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