RU2000133332A - METHOD FOR REGENERATING FLUORATED ALKANIC ACIDS FROM WASTE WATERS - Google Patents

METHOD FOR REGENERATING FLUORATED ALKANIC ACIDS FROM WASTE WATERS

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Publication number
RU2000133332A
RU2000133332A RU2000133332/04A RU2000133332A RU2000133332A RU 2000133332 A RU2000133332 A RU 2000133332A RU 2000133332/04 A RU2000133332/04 A RU 2000133332/04A RU 2000133332 A RU2000133332 A RU 2000133332A RU 2000133332 A RU2000133332 A RU 2000133332A
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RU
Russia
Prior art keywords
fluorinated
acid
solids
waste water
highly dispersed
Prior art date
Application number
RU2000133332/04A
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Russian (ru)
Other versions
RU2226186C2 (en
Inventor
Бернд ФЕЛИКС
Райнхард ЗУЛЬЦБАХ
Штефан ФЮРЕР
Томас КАЙЗЕР
Хаген КНИП
Армин БУДЕСХАЙМ
Original Assignee
Динеон Гмбх Унд Ко. Кг
Аксива Гмбх
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from DE19824614A external-priority patent/DE19824614A1/en
Application filed by Динеон Гмбх Унд Ко. Кг, Аксива Гмбх filed Critical Динеон Гмбх Унд Ко. Кг
Publication of RU2000133332A publication Critical patent/RU2000133332A/en
Application granted granted Critical
Publication of RU2226186C2 publication Critical patent/RU2226186C2/en

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Claims (9)

1. Способ получения фторированных кислот-эмульгаторов из отработанной воды, отличающийся тем, что сначала из отработанной воды из полимеризации фторированных мономеров удаляют высокодисперсные твердые вещества и/или переводимые в твердые вещества компоненты, непосредственно после этого фторированные кислоты-эмульгаторы связывают на анионообменной смоле и из нее элюируют эти фторированные эмульгаторные кислоты.1. A method of producing fluorinated acid emulsifiers from waste water, characterized in that first, highly dispersed solids and / or components converted to solids are removed from the waste water from the polymerization of fluorinated monomers, immediately after that the fluorinated acid emulsifiers are bonded to an anion exchange resin and from these fluorinated emulsifier acids elute. 2. Способ по п. 1, отличающийся тем, что высокодисперсные твердые вещества осаждаются. 2. The method according to p. 1, characterized in that highly dispersed solids are deposited. 3. Способ по п. 1, отличающийся тем, что высокодисперсные твердые вещества механически удаляют. 3. The method according to p. 1, characterized in that highly dispersed solids are mechanically removed. 4. Способ по п. 1, отличающийся тем, что переводимые в твердые вещества компоненты осаждают. 4. The method according to p. 1, characterized in that the components transferred to solids are precipitated. 5. Способ по одному или нескольким из пп. 1, 2 и 4, отличающийся тем, что осажденные вещества отделяют седиментацией. 5. The method according to one or more of paragraphs. 1, 2 and 4, characterized in that the precipitated substances are separated by sedimentation. 6. Способ по одному или нескольким из пп. 1, 2 и 4, отличающийся тем, что осажденные вещества отделяют флотацией. 6. The method according to one or more of claims. 1, 2 and 4, characterized in that the precipitated substances are separated by flotation. 7. Способ по одному или нескольким из предыдущих пунктов, отличающийся тем, что для регенерации чистых фторированных кислот-эмульгаторов с очень низким содержанием щавелевой кислоты отработанную воду обрабатывают при интенсивном перемешивании с раствором соли алюминия, непосредственно после этого доводят показатель рН до 6-7,5 раствором известкового молока, образующийся осадок отфильтровывают и раствор, доведенный серной кислотой до показателя рН менее 7, пропускают через ионообменник. 7. The method according to one or more of the preceding paragraphs, characterized in that for the regeneration of pure fluorinated acid emulsifiers with a very low content of oxalic acid, the waste water is treated with vigorous stirring with an aluminum salt solution, immediately after that the pH is adjusted to 6-7, 5 with a solution of milk of lime, the precipitate formed is filtered off and the solution brought with sulfuric acid to a pH of less than 7 is passed through an ion exchanger. 8. Способ по одному или нескольким из предыдущих пунктов, отличающийся тем, что применяемая анионообменная смола является сильноосновной. 8. The method according to one or more of the preceding paragraphs, characterized in that the used anion exchange resin is strongly basic. 9. Способ по одному или нескольким из предыдущих пунктов, отличающийся тем, что элюирование фторированной кислоты-эмульгатора из анионообменника производят смесью из разбавленной минеральной кислоты и органического растворителя. 9. The method according to one or more of the preceding paragraphs, characterized in that the elution of the fluorinated acid emulsifier from the anion exchanger is carried out with a mixture of dilute mineral acid and an organic solvent.
RU2000133332/04A 1998-06-02 1999-05-27 Method of recovering fluorinated alkane acids from waste waters RU2226186C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19824614A DE19824614A1 (en) 1998-06-02 1998-06-02 Process for the recovery of fluorinated alkanoic acids from waste water
DE19824614.5 1998-06-02

Publications (2)

Publication Number Publication Date
RU2000133332A true RU2000133332A (en) 2002-12-10
RU2226186C2 RU2226186C2 (en) 2004-03-27

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RU2000133332/04A RU2226186C2 (en) 1998-06-02 1999-05-27 Method of recovering fluorinated alkane acids from waste waters

Country Status (16)

Country Link
US (1) US6613941B1 (en)
EP (2) EP1193242B1 (en)
JP (1) JP3678651B2 (en)
KR (1) KR100518480B1 (en)
CN (1) CN1134403C (en)
AT (2) ATE222229T1 (en)
AU (1) AU4370199A (en)
CA (1) CA2334105A1 (en)
DE (3) DE19824614A1 (en)
ES (1) ES2176137T3 (en)
HU (1) HUP0102469A2 (en)
PL (1) PL193358B1 (en)
RU (1) RU2226186C2 (en)
TR (1) TR200003530T2 (en)
WO (1) WO1999062858A1 (en)
ZA (1) ZA200006907B (en)

Families Citing this family (99)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19857111A1 (en) * 1998-12-11 2000-06-15 Dyneon Gmbh Aqueous dispersions of fluoropolymers
DE19932771A1 (en) 1999-07-14 2001-01-18 Dyneon Gmbh Process for the elution of fluorinated emulsifiers
DE19933696A1 (en) * 1999-07-17 2001-01-18 Dyneon Gmbh Process for the recovery of fluorinated emulsifiers from aqueous phases
DE19953285A1 (en) 1999-11-05 2001-05-10 Dyneon Gmbh Process for the recovery of fluorinated emulsifiers
US6720360B1 (en) * 2000-02-01 2004-04-13 3M Innovative Properties Company Ultra-clean fluoropolymers
US6794550B2 (en) 2000-04-14 2004-09-21 3M Innovative Properties Company Method of making an aqueous dispersion of fluoropolymers
US6281374B1 (en) * 2000-08-23 2001-08-28 E. I. Du Pont De Nemours And Company Fluorinated alkanoic acid purification process
US7125941B2 (en) * 2001-03-26 2006-10-24 3M Innovative Properties Company Aqueous emulsion polymerization process for producing fluoropolymers
US6737489B2 (en) 2001-05-21 2004-05-18 3M Innovative Properties Company Polymers containing perfluorovinyl ethers and applications for such polymers
US7045571B2 (en) 2001-05-21 2006-05-16 3M Innovative Properties Company Emulsion polymerization of fluorinated monomers
US7279522B2 (en) 2001-09-05 2007-10-09 3M Innovative Properties Company Fluoropolymer dispersions containing no or little low molecular weight fluorinated surfactant
JP2003220393A (en) * 2001-11-22 2003-08-05 Asahi Glass Co Ltd Method for adsorptively recovering fluorine-containing emulsifier
US6822059B2 (en) 2002-04-05 2004-11-23 3M Innovative Properties Company Dispersions containing bicomponent fluoropolymer particles and use thereof
US6833418B2 (en) 2002-04-05 2004-12-21 3M Innovative Properties Company Dispersions containing perfluorovinyl ether homopolymers and use thereof
EP1441014A1 (en) * 2003-01-22 2004-07-28 3M Innovative Properties Company Aqueous fluoropolymer dispersion comprising a melt processible fluoropolymer and having a reduced amount of fluorinated surfactant
FR2856934B1 (en) * 2003-07-02 2005-08-19 Atofina PROCESS FOR RECOVERING FLUORINATED SURFACTANTS WITH ACTIVE COAL
US6991732B2 (en) 2003-07-02 2006-01-31 Arkema Process for the recovery of fluorosurfactants by active charcoal
ATE529451T1 (en) * 2003-11-17 2011-11-15 3M Innovative Properties Co AQUEOUS PTFE DISPERSIONS WITH A LOW CONTENT OF FLUORINATED EMULSIFIERS
EP1561742B1 (en) * 2004-02-05 2012-11-21 3M Innovative Properties Company Method of recovering fluorinated acid surfactants from adsorbent particles loaded therewith
EP1561729A1 (en) * 2004-02-05 2005-08-10 3M Innovative Properties Company Removal of fluorinated surfactants from waste water
US7304101B2 (en) * 2004-07-19 2007-12-04 3M Innovative Properties Company Method of purifying a dispersion of ionic fluoropolymer
US20060014887A1 (en) * 2004-07-19 2006-01-19 3M Innovative Properties Company Method of hydrolyzing a dispersion of ionic fluoropolymer
US7671111B2 (en) * 2005-02-10 2010-03-02 E.I. Du Pont De Nemours And Company Monitoring column breakthrough in a process for removing fluorosurfactant from aqueous fluoropolymer dispersions
EP1700869A1 (en) 2005-03-11 2006-09-13 3M Innovative Properties Company Recovery of fluorinated surfactants from a basic anion exchange resin having quaternary ammonium groups
GB0514398D0 (en) 2005-07-15 2005-08-17 3M Innovative Properties Co Aqueous emulsion polymerization of fluorinated monomers using a fluorinated surfactant
US7671112B2 (en) 2005-07-15 2010-03-02 3M Innovative Properties Company Method of making fluoropolymer dispersion
GB0523853D0 (en) 2005-11-24 2006-01-04 3M Innovative Properties Co Fluorinated surfactants for use in making a fluoropolymer
GB0525978D0 (en) 2005-12-21 2006-02-01 3M Innovative Properties Co Fluorinated Surfactants For Making Fluoropolymers
US20080015304A1 (en) 2006-07-13 2008-01-17 Klaus Hintzer Aqueous emulsion polymerization process for producing fluoropolymers
EP1935490B1 (en) * 2005-10-14 2014-02-26 Asahi Glass Company, Limited Method of regenerating basic anion-exchange resin
US7404907B2 (en) * 2005-12-19 2008-07-29 Kelydra Elizabeth Welcker Removal and recovery of ammonium perfluorooctanoate (APFO) from contaminated water
US7728087B2 (en) 2005-12-23 2010-06-01 3M Innovative Properties Company Fluoropolymer dispersion and method for making the same
US7754795B2 (en) 2006-05-25 2010-07-13 3M Innovative Properties Company Coating composition
US8119750B2 (en) 2006-07-13 2012-02-21 3M Innovative Properties Company Explosion taming surfactants for the production of perfluoropolymers
CN101583571B (en) * 2006-11-22 2014-08-27 伊沃夸水处理技术有限责任公司 System and method for treating groundwater
WO2008109219A1 (en) * 2007-03-06 2008-09-12 3M Innovative Properties Company System and process for ultrasonically induced cavitation of fluorochemicals
US20080264864A1 (en) 2007-04-27 2008-10-30 3M Innovative Properties Company PROCESS FOR REMOVING FLUORINATED EMULSIFIER FROM FLUOROPOLMER DISPERSIONS USING AN ANION-EXCHANGE RESIN AND A pH-DEPENDENT SURFACTANT AND FLUOROPOLYMER DISPERSIONS CONTAINING A pH-DEPENDENT SURFACTANT
GB0712191D0 (en) * 2007-06-25 2007-08-01 3M Innovative Properties Co Process for removing fluorinated compounds for an aqueous phase originating from the preparation of fluoropolymers
EP2195350B1 (en) * 2007-09-14 2013-07-24 3M Innovative Properties Company Ultra low viscosity iodine containing amorphous fluoropolymers
CN102007150B (en) * 2008-02-29 2015-09-23 3M创新有限公司 There is the Perfluoroelastomer of low carbonyl endgroup ratios
JP5256002B2 (en) * 2008-11-25 2013-08-07 オルガノ株式会社 Wastewater treatment system for photoresist development wastewater
WO2011014715A2 (en) 2009-07-31 2011-02-03 3M Innovative Properties Company Fluoropolymer compositions containing a polyol compound and methods of making them
US20130168319A1 (en) 2010-02-18 2013-07-04 Lanxess Deutschland Gmbh Treatment of waste water containing fluorinated acids or the salts thereof
EP2431334A1 (en) * 2010-09-16 2012-03-21 LANXESS Deutschland GmbH Treatment of waste water from the electroplating industry
EP2557109B1 (en) 2011-08-11 2019-01-23 3M Innovative Properties Company Method of bonding a fluoroelastomer compound to a metal substrate using low molecular weight functional hydrocarbons as bonding promoter
JP5983615B2 (en) 2011-09-13 2016-09-06 旭硝子株式会社 Method for recovering anionic fluorine-containing emulsifier
WO2014071129A1 (en) 2012-11-05 2014-05-08 3M Innovative Properties Company Peroxide-curable fluoropolymer composition including solvent and method of using the same
AU2013361100B2 (en) 2012-12-20 2016-10-06 3M Innovative Properties Company Composite particles including a fluoropolymer, methods of making, and articles including the same
EP2803691B1 (en) 2013-05-17 2016-04-20 3M Innovative Properties Company Fluoropolymer compositions containing a polyhydroxy surfactant
EP2803690B1 (en) 2013-05-17 2016-12-14 3M Innovative Properties Company Method for reducing fluorinated emulsifiers from aqueous fluoropolymer dispersions using sugar-based emulsifiers
DE102013214514B4 (en) * 2013-07-25 2017-07-06 Cornelsen Solutions GmbH Process and plant for the treatment of PFC-contaminated aqueous media
CA2924818A1 (en) 2013-09-20 2015-03-26 3M Innovative Properties Company Polymer processing additive, compositions, and methods
WO2015053235A1 (en) * 2013-10-10 2015-04-16 旭硝子株式会社 Recovery method for fluorine-containing emulsifier
CN104944533B (en) * 2014-03-26 2017-08-25 北京师范大学 A kind of concentrating and separating minimizing technology of perfluorochemical
CN104529031B (en) * 2014-12-08 2016-05-04 北京师范大学 From sewage, reclaim the method for perfluorochemical
US10982079B2 (en) 2014-12-19 2021-04-20 3M Innovative Properties Company Poly(oxyalkylene) polymer processing additive, compositions, and methods
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WO2017066266A1 (en) 2015-10-13 2017-04-20 3M Innovative Properties Company Fluoropolymer processing additive, compositions, and methods
EP3374429A1 (en) 2015-11-13 2018-09-19 3M Innovative Properties Company Compositions including a bimodal blend of amorphous fluoropolymers and their uses
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TW201815845A (en) 2016-05-17 2018-05-01 ３Ｍ新設資產公司 Compositions including copolymers of vinylidene fluoride and tetrafluoroethylene and methods of using the same
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CN106345432B (en) * 2016-09-07 2018-03-23 济南大学 A kind of preparation method of polyacrylamide modified magnetic loofah adsorbent
WO2018118956A1 (en) 2016-12-20 2018-06-28 3M Innovative Properties Company Composition including fluoropolymer and inorganic filler and method of making a three-dimensional article
JP6859455B2 (en) 2017-05-19 2021-04-14 スリーエム イノベイティブ プロパティズ カンパニー A method for producing a polyfluoroylated allyl ether and a compound related to the method.
WO2019004298A1 (en) * 2017-06-27 2019-01-03 ダイキン工業株式会社 Method and system for treating aqueous fluid resulting from fluoropolymer production step
EP3681949A4 (en) 2017-09-14 2021-07-14 3M Innovative Properties Company Fluorinated copolymer and compositions and articles including the same
WO2019156175A1 (en) 2018-02-08 2019-08-15 ダイキン工業株式会社 Method for manufacturing fluoropolymer, surfactant for polymerization, use for surfactant, and composition
US11767379B2 (en) 2018-03-01 2023-09-26 Daikin Industries, Ltd. Method for manufacturing fluoropolymer
EP3763747A4 (en) 2018-03-07 2021-12-01 Daikin Industries, Ltd. Method for producing fluoropolymer
EP3646946A1 (en) 2018-10-30 2020-05-06 Helmholtz-Zentrum für Umweltforschung GmbH-UFZ Method for the removal of polyfluorinated organic compounds from water by means of an adsorbent and regeneration thereof
TW202033573A (en) 2018-12-17 2020-09-16 美商3M新設資產公司 Composition including curable fluoropolymer and curative and methods of making and using them
JP7060826B2 (en) 2019-02-01 2022-04-27 ダイキン工業株式会社 Method for producing polytetrafluoroethylene
JP7104354B2 (en) 2019-02-07 2022-07-21 ダイキン工業株式会社 Composition, stretched product and method for producing the same
WO2020183306A1 (en) 2019-03-12 2020-09-17 3M Innovative Properties Company Dispersible perfluorosulfonic acid ionomer compositions
JPWO2020213691A1 (en) 2019-04-16 2021-11-25 ダイキン工業株式会社 Method for manufacturing fluoropolymer powder
US11548800B2 (en) 2019-04-26 2023-01-10 Geyser Remediation LLC Water purification apparatus and method
CN113710620A (en) * 2019-04-26 2021-11-26 大金工业株式会社 Water treatment method and composition
CN113906038A (en) 2019-06-04 2022-01-07 3M创新有限公司 Multifunctional fluorinated compounds, fluorinated polymers made therefrom, and related methods
US20220306491A1 (en) 2019-06-28 2022-09-29 Katholieke Universiteit Leuven Adsorptive Removal of Perfluorinated or Partially Fluorinated Surfactants
CN114127131B (en) 2019-07-23 2024-04-02 大金工业株式会社 Method for producing fluorine-containing polymer, polytetrafluoroethylene composition, and polytetrafluoroethylene powder
JP7307368B2 (en) 2019-09-05 2023-07-12 ダイキン工業株式会社 Polytetrafluoroethylene aqueous dispersion
EP4026855A4 (en) 2019-09-05 2023-09-20 Daikin Industries, Ltd. Composition and method for producing same
CN114514253A (en) 2019-10-03 2022-05-17 大金工业株式会社 Polytetrafluoroethylene and process for producing the same
EP4063405A4 (en) 2019-11-19 2024-01-10 Daikin Ind Ltd Polytetrafluoroethylene production method
WO2021111342A1 (en) 2019-12-02 2021-06-10 3M Innovative Properties Company Dispersible particles of perfluorosulfonic acid ionomer
CN114901710B (en) 2019-12-20 2024-01-30 3M创新有限公司 Fluorinated copolymers and compositions and articles comprising the same
CN115667198A (en) 2020-03-19 2023-01-31 3M创新有限公司 Perfluorinated allyl ethers and perfluorinated allylamines and methods of making and using the same
KR20220167297A (en) 2020-04-09 2022-12-20 쓰리엠 이노베이티브 프로퍼티즈 캄파니 Composites comprising fluorinated polymers and salt nanoparticles and articles comprising the same
WO2021214664A1 (en) 2020-04-21 2021-10-28 3M Innovative Properties Company Particles including polytetrafluoroethylene and process for making a three-dimensional article
WO2022050430A1 (en) 2020-09-07 2022-03-10 ダイキン工業株式会社 Aqueous modified polytetrafluoroethylene dispersion
CN116457376A (en) 2020-11-19 2023-07-18 大金工业株式会社 Method for producing polytetrafluoroethylene and polytetrafluoroethylene-containing composition
WO2022180547A1 (en) 2021-02-26 2022-09-01 3M Innovative Properties Company Process for making a fluoropolymer and fluoropolymer made therefrom
WO2023057926A1 (en) 2021-10-07 2023-04-13 3M Innovative Properties Company Composite including fluorinated polymer and lithium fluoride nanoparticles and articles including the same
US11840471B1 (en) 2021-12-20 2023-12-12 Republic Services, Inc. Method for removing per- and polyfluoroalkyl substances (PFAS) from waste water
WO2023208919A1 (en) 2022-04-28 2023-11-02 Röhm Gmbh Poly(meth)acrylat impact modifier with reduced metal ion content and method for its production

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1314607A (en) 1969-09-12 1973-04-26 Kureha Chemical Ind Co Ltd Method for recovering perfluorinated emulsifiers
US3882153A (en) 1969-09-12 1975-05-06 Kureha Chemical Ind Co Ltd Method for recovering fluorinated carboxylic acid
DE2903981A1 (en) * 1979-02-02 1980-08-07 Hoechst Ag RECOVERY OF FLUORINATED EMULGATOR ACIDS FROM BASIC ANION EXCHANGERS
DE2908001C2 (en) 1979-03-01 1981-02-19 Hoechst Ag, 6000 Frankfurt Process for the preparation of concentrated dispersions of fluoropolymers
US5017480A (en) * 1987-08-10 1991-05-21 Ajimomoto Co., Inc. Process for recovering L-amino acid from fermentation liquors
DE4213154C1 (en) 1992-04-22 1993-06-17 Hoechst Ag, 6230 Frankfurt, De
DE4402694A1 (en) 1993-06-02 1995-08-03 Hoechst Ag Process for the recovery of fluorinated carboxylic acids

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