JP2006515375A5 - - Google Patents

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Publication number
JP2006515375A5
JP2006515375A5 JP2004508133A JP2004508133A JP2006515375A5 JP 2006515375 A5 JP2006515375 A5 JP 2006515375A5 JP 2004508133 A JP2004508133 A JP 2004508133A JP 2004508133 A JP2004508133 A JP 2004508133A JP 2006515375 A5 JP2006515375 A5 JP 2006515375A5
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JP
Japan
Prior art keywords
fluoropolymer dispersion
anion exchange
exchange resin
aqueous
dispersion
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JP2004508133A
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English (en)
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JP2006515375A (ja
JP4351155B2 (ja
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Priority claimed from EP02100547A external-priority patent/EP1364972B1/en
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Publication of JP2006515375A publication Critical patent/JP2006515375A/ja
Publication of JP2006515375A5 publication Critical patent/JP2006515375A5/ja
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Publication of JP4351155B2 publication Critical patent/JP4351155B2/ja
Anticipated expiration legal-status Critical
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Claims (6)

  1. 非固定化樹脂床において水性フルオロポリマー分散系をアニオン交換樹脂と接触させることによる、水性フルオロポリマー分散系中のフッ素化乳化剤の量を減少させる方法であって、
    （ａ）前記アニオン交換樹脂と接触させている間に前記フルオロポリマー分散系を安定化させるために、前記水性フルオロポリマー分散系を界面活性剤の有効量と混合する工程と、
    （ｂ）前記水性フルオロポリマー分散系中の前記フッ素化乳化剤の量を所望のレベルまで減少させるために４時間未満の時間で、前記水性フルオロポリマー分散系をアニオン交換樹脂の有効量とともに撹拌することによって、前記水性フルオロポリマー分散系をアニオン交換樹脂と接触させる工程と、
    （ｃ）前記アニオン交換樹脂を前記水性フルオロポリマー分散系から分離する工程と
    を含む方法。
  2. 前記フルオロポリマー分散系を安定化させるための前記界面活性剤が、非イオン性界面活性剤である、請求項１に記載の方法。
  3. 前記フルオロポリマーが、ポリテトラフルオロエチレン、変性ポリテトラフルオロエチレンおよび熱可塑性溶融加工可能なフルオロポリマーよりなる群から選択されるフルオロポリマーを含む、請求項１に記載の方法。
  4. 前記フッ素化乳化剤が、ペルフルオロアルカン酸またはその塩である、請求項１に記載の方法。
  5. 非固定化樹脂床において水性フルオロポリマー分散系をアニオン交換樹脂と接触させることによる、水性フルオロポリマー分散系中の前記フッ素化乳化剤の量を減少させる連続式またはバッチ式の方法であって、
    （ａ）前記アニオン交換樹脂と接触させている間に前記フルオロポリマー分散系を安定化させるために、前記水性フルオロポリマー分散系を界面活性剤の有効量と混合する工程と、
    （ｂ）前記水性分散系中の前記フッ素化乳化剤の量を所望のレベルまで減少させるために十分な時間で、前記水性フルオロポリマー分散系をアニオン交換樹脂の有効量とともに撹拌することによって、前記水性フルオロポリマー分散系を前記アニオン交換樹脂と接触させる工程と、
    （ｃ）前記アニオン交換樹脂を前記フルオロポリマー分散系から分離する工程と、
    （ｄ）工程（ｃ）において分離された前記アニオン交換樹脂を、再生させずに少なくとも一度は工程（ｂ）において再利用する工程と
    を含む方法。
  6. 前記水性フルオロポリマー分散系を安定化させるための前記界面活性剤が、非イオン性界面活性剤である、請求項５に記載の方法。
JP2004508133A 2002-05-22 2003-05-05 水性フルオロポリマー分散系中のフッ素化界面活性剤の量を減少させる方法 Expired - Fee Related JP4351155B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP02100547A EP1364972B1 (en) 2002-05-22 2002-05-22 Process for reducing the amount of fluorinated surfactant in aqueous fluoropolymer dispersions
PCT/US2003/013839 WO2003099879A1 (en) 2002-05-22 2003-05-05 Process for reducing the amount of fluorinated surfactant in aqueous fluoropolymer dispersions

Publications (3)

Publication Number Publication Date
JP2006515375A JP2006515375A (ja) 2006-05-25
JP2006515375A5 true JP2006515375A5 (ja) 2006-07-06
JP4351155B2 JP4351155B2 (ja) 2009-10-28

Family

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Family Applications (1)

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JP2004508133A Expired - Fee Related JP4351155B2 (ja) 2002-05-22 2003-05-05 水性フルオロポリマー分散系中のフッ素化界面活性剤の量を減少させる方法

Country Status (11)

Country Link
US (2) US6825250B2 (ja)
EP (1) EP1364972B1 (ja)
JP (1) JP4351155B2 (ja)
CN (1) CN1656128A (ja)
AT (1) ATE338073T1 (ja)
AU (1) AU2003234457A1 (ja)
CA (1) CA2484299A1 (ja)
DE (1) DE60214343T2 (ja)
RU (1) RU2319712C2 (ja)
WO (1) WO2003099879A1 (ja)
ZA (1) ZA200410285B (ja)

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