EP1208065A1 - Verfahren zur rückgewinnung fluorierter emulgatoren aus wässrigen phasen - Google Patents
Verfahren zur rückgewinnung fluorierter emulgatoren aus wässrigen phasenInfo
- Publication number
- EP1208065A1 EP1208065A1 EP00954467A EP00954467A EP1208065A1 EP 1208065 A1 EP1208065 A1 EP 1208065A1 EP 00954467 A EP00954467 A EP 00954467A EP 00954467 A EP00954467 A EP 00954467A EP 1208065 A1 EP1208065 A1 EP 1208065A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- aqueous phase
- emulsifier
- concentration
- exchange resin
- nonionic surfactant
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/547—Tensides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J41/00—Anion exchange; Use of material as anion exchangers; Treatment of material for improving the anion exchange properties
- B01J41/04—Processes using organic exchangers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/47—Separation; Purification; Stabilisation; Use of additives by solid-liquid treatment; by chemisorption
Definitions
- the invention relates to the treatment of waste water, especially weakly contaminated waste water, which contain fluorinated emulsifiers, such as are used in the polymerization of fluorinated monomers, since they have no telogenic properties.
- the salts preferably the alkali or ammonium salts, of perfluorinated or partially fluorinated alkane carboxylic acids or sulfonic acids are used. These compounds are produced by electrofluorination or by the telomerization of fluorinated monomers, which is very expensive. There has been no shortage of attempts to recover these valuable materials from waste water.
- a process for the recovery of fluorinated carboxylic acids in usable form from contaminated starting materials is known from US Pat. No. 5,442,097, where necessary the fluorinated carboxylic acid is released from these materials in an aqueous medium with a sufficiently strong acid, and these are reacted with a suitable alcohol and distilled off the ester formed.
- a polymerization liquor can be used as the starting material, in particular from so-called emulsion polymerization, in which the fluoropolymer is produced in the form of colloidal particles with the aid of relatively high amounts of emulsifier.
- Polymerization liquor is the wastewater that is obtained when the fluoropolymer is isolated by coagulation (without further process steps such as washing). This The process has proven itself very well, but requires a certain concentration of fluorinated carboxylic acid in the starting material.
- Carboxylic acids can also be carried out in the absence of alcohols.
- the fluorocarboxylic acid is distilled off in the form of a highly concentrated azeotrope.
- this method variant is not technically advantageous for energy reasons.
- the resulting wastewater is also more polluted than before treatment.
- DE-A-20 44 986 discloses a process for obtaining perfluorocarboxylic acids from dilute solution, the dilute solution of the perfluorocarboxylic acids being brought into adsorption contact with a weakly based anion exchange resin and thereby the perfluorocarboxylic acid contained in the solution to the anions - Exchange resin adsorbed, the anion exchange resin eluted with an aqueous ammonia solution and thus the adsorbed perfluorocarboxylic acid is converted into the eluent and finally the acid from the eluate is recovered.
- relatively large amounts of dilute ammonia solution are required for complete elution and, moreover, this process is very time consuming.
- fluorinated emulsifier acids which is characterized in that the solids finely divided in the waste water are stabilized with a surfactant or a surface-active substance and then the fluorinated emulsifier acids are bound to an anion exchange resin and the fluorinated emulsifier acids are eluted from this (WO -A-99/62830).
- nonionic surfactants are used in a concentration of 100 to 400 mg / 1.
- a process has now been found for recovering fluorinated emulsifiers from an aqueous phase, this aqueous phase containing small amounts of fluoropolymer particles and optionally further substances in addition to the emulsifier, an upper concentration value of a nonionic surface-active substance being determined, below which no further decrease in the Desorption of the emulsifier bound to an anion exchanger occurs, - the aqueous phase is adjusted to a concentration of nonionic surfactant between the upper concentration value determined in this way or a lower concentration which is still effective to avoid coagulation of the polymer particles, brings the aqueous phase thus adjusted into contact with an anionic exchange resin in order to effect adsorption of the emulsifier on the exchange resin and to release the emulsifier from the exchange resin.
- the suitable concentration of nonionic surface-active agent depends on the type of polymer, on the surface-active agent and optionally on other substances contained in the aqueous phase. It is therefore advisable to determine the appropriate concentration limits on the nonionic surfactant for each wastewater to be treated. Usually a concentration of at most 10 ppm is sufficient, mostly a concentration in the range of 5 to 0.1 ppm.
- fluoropolymers such as polytetrafluoroethylene, fluorothermoplastics and fluoroelastomers
- the polymers are separated by coagulation, these being mechanically subject to high shear ratios or chemically by means of coagulation
- the coagulated fluoropolymers are usually agglomerated and washed with water. This results in relatively high amounts of process waste water, namely usually about 5 to 10 t of waste water per 1 t
- Fluoropolymer Fluoropolymer.
- the fluorinated emulsifier is largely washed out and is thus found in the waste water.
- the concentration is usually a few millimoles per liter, corresponding to about 1000 ppm.
- the wastewater also contains chemicals from the polymerization, such as initiators and buffers, which are approximately of the same order of magnitude as the emulsifier, and very small amounts of fluoropolymer latex particles which have not been coagulated.
- the proportion of these latex particles in the wastewater is usually less than 0.5% by weight.
- Another advantage of the low concentrations of nonionic surfactant is the more effective separation of the latex particles from the anion-exchanged wastewater. These particles are advantageously coagulated with small amounts of organic flocculant, it being found that the amount of flocculant required increases with increasing concentration of nonionic surface-active agent.
- the fluoropolymers obtained in this way, now loaded with small amounts of surface-active agent and flocculant, can be used in building materials and therefore do not have to be worked up or deposited in a complex manner.
- oxethylates and oxpropylates of organic hydroxy compounds are suitable as nonionic surface-active agents, non-aromatic oxalkylates being preferred for reasons of environmental protection. Oxethylates of long-chain alcohols are therefore preferably used.
- the organic flocculants are advantageously cationic products, for example polydiallyldimethylammonium chloride.
- Cationic surfactants such as didecyldimethylammonium chloride can also be used to precipitate the nonionic stabilized latex particles.
- their use on an industrial scale is problematic because, when the precipitation is carried out improperly, the particles are reloaded into cationically stabilized latex particles. This significantly reduces the degree of felling.
- the invention is explained in more detail in the following examples.
- wastewater from mechanically coagulated polymer dispersions which contained approximately 90% by weight of the perfluorooctanoic acid used in the polymerization and latex particles. They are not diluted with washing water from the agglomerated resins.
- the dimensions of the anion exchange column were: height 5 cm, diameter 4 cm, filling quantity 500 ml, flow rate 0.5 to 1 l / h, procedure: from top to bottom.
- a commercially available, strongly basic ion exchanger ® AMPERLITE IRA 402 was used, capacity: 1.2 mmol / ml.
- Polymerization liquor from the polymerization of the terpolymer from tetrafluoroethylene, hexafluoropropene and vinylidene fluoride with 0.3% by weight polymer-latex particles and 0.1% by weight perfluorooctanoic acid.
- a commercial p-octylphenol oxyethylate ® TRITON X 100 was used
- Example 1 is repeated with the modification that a commercially available fatty alcohol polyglycol ether ® GENAPOL X 080 (Hoechst AG) was used as the nonionic surface-active agent.
- Example 2 was repeated, but using a process wastewater ("polymerization liquor") from the polymerization of a copolymer of tetrafluoroethylene with perfluoro (n-propyl-vinyl) ether containing 0.1% by weight of perfluorooctanoic acid and 0.4% by weight. % Polymer latex particles was used.
- Example 2 was repeated, but using a process wastewater ("polymerization liquor”) from the polymerization of a copolymer of tetrafluoroethylene with ethylene with 0.2% by weight of perfluorooctanoic acid and 0.6% by weight of polymer latex particles.
- polymerization liquor a process wastewater from the polymerization of a copolymer of tetrafluoroethylene with ethylene with 0.2% by weight of perfluorooctanoic acid and 0.6% by weight of polymer latex particles.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Removal Of Specific Substances (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
- Treatment Of Water By Ion Exchange (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19933696 | 1999-07-17 | ||
DE19933696A DE19933696A1 (de) | 1999-07-17 | 1999-07-17 | Verfahren zur Rückgewinnung fluorierter Emulgatoren aus wässrigen Phasen |
PCT/EP2000/006556 WO2001005710A1 (de) | 1999-07-17 | 2000-07-11 | Verfahren zur rückgewinnung fluorierter emulgatoren aus wässrigen phasen |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1208065A1 true EP1208065A1 (de) | 2002-05-29 |
Family
ID=7915221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00954467A Ceased EP1208065A1 (de) | 1999-07-17 | 2000-07-11 | Verfahren zur rückgewinnung fluorierter emulgatoren aus wässrigen phasen |
Country Status (21)
Country | Link |
---|---|
US (1) | US6706193B1 (hu) |
EP (1) | EP1208065A1 (hu) |
JP (1) | JP3820369B2 (hu) |
KR (1) | KR100447479B1 (hu) |
CN (1) | CN1145587C (hu) |
AR (1) | AR024730A1 (hu) |
AU (1) | AU767303B2 (hu) |
BR (1) | BR0012520A (hu) |
CA (1) | CA2379931A1 (hu) |
CZ (1) | CZ2002128A3 (hu) |
DE (1) | DE19933696A1 (hu) |
ES (1) | ES2173825T1 (hu) |
HU (1) | HUP0201949A3 (hu) |
MX (1) | MXPA02000597A (hu) |
PL (1) | PL364027A1 (hu) |
RU (1) | RU2248328C2 (hu) |
SA (1) | SA00210609B1 (hu) |
TR (1) | TR200200135T2 (hu) |
TW (1) | TW574151B (hu) |
WO (1) | WO2001005710A1 (hu) |
ZA (1) | ZA200200397B (hu) |
Families Citing this family (77)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19857111A1 (de) * | 1998-12-11 | 2000-06-15 | Dyneon Gmbh | Wäßrige Dispersionen von Fluorpolymeren |
US7279522B2 (en) | 2001-09-05 | 2007-10-09 | 3M Innovative Properties Company | Fluoropolymer dispersions containing no or little low molecular weight fluorinated surfactant |
JP2003094052A (ja) * | 2001-09-21 | 2003-04-02 | Asahi Glass Co Ltd | 含フッ素乳化剤の吸着・回収方法 |
WO2004050719A1 (ja) * | 2002-11-29 | 2004-06-17 | Daikin Industries, Ltd. | 含フッ素ポリマー水性エマルション精製方法、精製エマルション及び含フッ素加工品 |
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 (fr) * | 2003-07-02 | 2005-08-19 | Atofina | Procede de recuperation de tensioactifs fluores par du charbon actif |
US6991732B2 (en) | 2003-07-02 | 2006-01-31 | Arkema | Process for the recovery of fluorosurfactants by active charcoal |
EP1529785B1 (en) * | 2003-10-24 | 2011-03-16 | 3M Innovative Properties Company | Aqueous dispersions of polytetrafluoroethylene particles |
EP1533325B1 (en) * | 2003-11-17 | 2011-10-19 | 3M Innovative Properties Company | Aqueous dispersions of polytetrafluoroethylene having a low amount of fluorinated surfactant |
WO2005066218A1 (en) * | 2003-12-30 | 2005-07-21 | 3M Innovative Properties Company | Fluoropolymer coagulation method and composition |
DE602004021467D1 (de) * | 2004-03-01 | 2009-07-23 | 3M Innovative Properties Co | Verfahren zum Beschichten eines Gegenstands mit einer fluorhaltigen Kunststoffsdispersion |
US20060014887A1 (en) * | 2004-07-19 | 2006-01-19 | 3M Innovative Properties Company | Method of hydrolyzing a dispersion of ionic fluoropolymer |
US7304101B2 (en) * | 2004-07-19 | 2007-12-04 | 3M Innovative Properties Company | Method of purifying a dispersion of ionic fluoropolymer |
US7790041B2 (en) * | 2004-08-11 | 2010-09-07 | E.I. Du Pont De Nemours And Company | Removing fluorosurfactant from aqueous fluoropolymer dispersions |
US20070023360A1 (en) * | 2005-08-01 | 2007-02-01 | Noelke Charles J | Removing fluorosurfactant from aqueous fluoropolymer dispersion using sorbent pouches |
CN101001888B (zh) * | 2004-08-11 | 2010-09-29 | 纳幕尔杜邦公司 | 用吸着剂袋从含氟聚合物水性分散体中去除含氟表面活性剂 |
US7402630B2 (en) | 2004-12-16 | 2008-07-22 | 3M Innovative Properties Company | Curing compositions for fluoropolymers |
US20060135681A1 (en) * | 2004-12-22 | 2006-06-22 | Cavanaugh Robert J | Viscosity control for reduced fluorosurfactant aqueous fluoropolymer dispersions by the addition of cationic surfactant |
US7619018B2 (en) * | 2004-12-22 | 2009-11-17 | E.I. Du Pont De Nemours And Company | Process for removing fluorosurfactant from aqueous fluoropolymer dispersions and reducing scum formation |
US20060178472A1 (en) * | 2005-02-10 | 2006-08-10 | Johnson David W | Process for producing low fluorosurfactant-containing aqueous fluoropolymer dispersions with controlled pH |
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 |
GB2427170A (en) * | 2005-06-17 | 2006-12-20 | 3M Innovative Properties Co | Fluoropolymer film having glass microspheres |
JP4977970B2 (ja) * | 2005-06-22 | 2012-07-18 | ダイキン工業株式会社 | ノニオン性界面活性剤水性組成物の製造方法 |
US7795332B2 (en) * | 2005-07-15 | 2010-09-14 | 3M Innovative Properties Company | Method of removing fluorinated carboxylic acid from aqueous liquid |
GB0514387D0 (en) * | 2005-07-15 | 2005-08-17 | 3M Innovative Properties Co | Aqueous emulsion polymerization of fluorinated monomers using a perfluoropolyether surfactant |
GB0523853D0 (en) | 2005-11-24 | 2006-01-04 | 3M Innovative Properties Co | Fluorinated surfactants for use in making a fluoropolymer |
GB0514398D0 (en) | 2005-07-15 | 2005-08-17 | 3M Innovative Properties Co | Aqueous emulsion polymerization of fluorinated monomers using a fluorinated surfactant |
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 |
US7294677B2 (en) | 2005-08-25 | 2007-11-13 | 3M Innovative Properties Company | Catalyst for making fluoroelastomer compositions and methods of using the same |
GB2430437A (en) * | 2005-09-27 | 2007-03-28 | 3M Innovative Properties Co | Method of making a fluoropolymer |
JP5163125B2 (ja) * | 2005-10-14 | 2013-03-13 | 旭硝子株式会社 | 塩基性陰イオン交換樹脂の再生方法 |
US7728087B2 (en) | 2005-12-23 | 2010-06-01 | 3M Innovative Properties Company | Fluoropolymer dispersion and method for making the same |
US20070276103A1 (en) * | 2006-05-25 | 2007-11-29 | 3M Innovative Properties Company | Fluorinated Surfactants |
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 |
KR101500018B1 (ko) * | 2007-02-16 | 2015-03-06 | 쓰리엠 이노베이티브 프로퍼티즈 캄파니 | 물로부터 불소화합물계 물질을 제거하는 시스템 및 방법 |
US20100072134A1 (en) * | 2007-03-06 | 2010-03-25 | Mader Brian T | 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 |
CN101835810B (zh) * | 2007-09-14 | 2013-04-03 | 3M创新有限公司 | 含碘的超低粘度无定形含氟聚合物 |
KR101595137B1 (ko) * | 2008-02-29 | 2016-02-17 | 쓰리엠 이노베이티브 프로퍼티즈 캄파니 | 낮은 카르보닐 말단기 비를 갖는 퍼플루오로엘라스토머 |
EP2445939B1 (en) | 2009-06-25 | 2020-09-23 | 3M Innovative Properties Company | Curing compositions for fluoropolymers |
EP2536503A1 (de) * | 2010-02-18 | 2012-12-26 | Lanxess Deutschland GmbH | Behandlung von abwässern enthaltend fluorierte säuren oder deren salze |
WO2013016372A1 (en) * | 2011-07-28 | 2013-01-31 | Arkema Inc. | Method of producing fluoropolymers using alkyl sulfate surfactants |
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 |
US20150299356A1 (en) | 2012-11-05 | 2015-10-22 | 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 |
CN103395860B (zh) * | 2013-08-07 | 2014-12-31 | 邱峰 | 一种净化含氟废水的方法和装置 |
BR112016008623A2 (pt) | 2013-09-20 | 2018-05-02 | 3M Innovative Properties Co | aditivo, composição e métodos de processamento de polímero. |
WO2015053235A1 (ja) * | 2013-10-10 | 2015-04-16 | 旭硝子株式会社 | 含フッ素乳化剤の回収方法 |
CN104529031B (zh) * | 2014-12-08 | 2016-05-04 | 北京师范大学 | 从污水中回收全氟化合物的方法 |
JP2017538833A (ja) | 2014-12-19 | 2017-12-28 | スリーエム イノベイティブ プロパティズ カンパニー | ポリ(オキシアルキレン)ポリマー加工用添加剤、組成物及び方法 |
CN107223139B (zh) | 2015-02-12 | 2020-06-30 | 3M创新有限公司 | 包含全氟烷氧基烷基侧基的四氟乙烯/六氟丙烯共聚物及其制备和使用方法 |
WO2016130914A1 (en) | 2015-02-12 | 2016-08-18 | 3M Innovative Properties Company | Tetrafluoroethylene/hexafluoropropylene copolymers including perfluoroalkoxyalkyl pendant groups |
WO2016130894A1 (en) | 2015-02-12 | 2016-08-18 | 3M Innovative Properties Company | Tetrafluoroethylene copolymers having sulfonyl groups |
EP3353221B1 (en) | 2015-09-23 | 2023-06-07 | 3M Innovative Properties Company | Method of making a copolymer of tetrafluoroethylene having sulfonyl pendant groups |
CN108137880A (zh) | 2015-10-13 | 2018-06-08 | 3M创新有限公司 | 含氟聚合物加工添加剂、组合物和方法 |
EP3374429A1 (en) | 2015-11-13 | 2018-09-19 | 3M Innovative Properties Company | Compositions including a bimodal blend of amorphous fluoropolymers and their uses |
CN108495877B (zh) | 2016-01-21 | 2021-06-08 | 3M创新有限公司 | 含氟聚合物的增材加工 |
TW201815845A (zh) | 2016-05-17 | 2018-05-01 | 3M新設資產公司 | 包括二氟亞乙烯與四氟乙烯的共聚物之組成物及其使用方法 |
EP3500604B1 (en) | 2016-08-17 | 2020-06-17 | 3M Innovative Properties Company | Tetrafluoroethylene and perfluorinated allyl ether copolymers |
US20190344496A1 (en) | 2016-12-20 | 2019-11-14 | 3M Innovative Properties Company | Composition including fluoropolymer and inorganic filler and method of making a three-dimensional article |
WO2018211457A2 (en) | 2017-05-19 | 2018-11-22 | 3M Innovative Properties Company | Methods of making a polyfluorinated allyl ether and compounds relating to the methods |
WO2019055793A1 (en) | 2017-09-14 | 2019-03-21 | 3M Innovative Properties Company | FLUOROPOLYMER DISPERSION, METHOD FOR PRODUCING FLUOROPOLYMER DISPERSION, CATALYTIC INK, AND POLYMER ELECTROLYTE MEMBRANE |
WO2019093251A1 (ja) * | 2017-11-10 | 2019-05-16 | 日本ゼオン株式会社 | 洗浄溶剤組成物の再生方法および再生装置、並びに、被洗浄物の洗浄方法および洗浄システム |
TW202033573A (zh) | 2018-12-17 | 2020-09-16 | 美商3M新設資產公司 | 包括可固化氟聚合物及固化劑之組成物及製造及使用其之方法 |
WO2020183306A1 (en) | 2019-03-12 | 2020-09-17 | 3M Innovative Properties Company | Dispersible perfluorosulfonic acid ionomer compositions |
JP2022535815A (ja) | 2019-06-04 | 2022-08-10 | スリーエム イノベイティブ プロパティズ カンパニー | 多官能性フッ素化化合物、その化合物から製造されるフッ素化ポリマー、及び関連方法 |
WO2021111342A1 (en) | 2019-12-02 | 2021-06-10 | 3M Innovative Properties Company | Dispersible particles of perfluorosulfonic acid ionomer |
WO2021127346A1 (en) | 2019-12-20 | 2021-06-24 | 3M Innovative Properties Company | Fluorinated copolymer and compositions and articles including the same |
EP4121405A1 (en) | 2020-03-19 | 2023-01-25 | 3M Innovative Properties Company | Perfluorinated allyl ethers and perfluorinated allyl amines and methods of making and using the same |
KR20220167297A (ko) | 2020-04-09 | 2022-12-20 | 쓰리엠 이노베이티브 프로퍼티즈 캄파니 | 플루오르화 중합체 및 염 나노입자를 포함하는 복합재 및 이를 포함하는 물품 |
WO2021214664A1 (en) | 2020-04-21 | 2021-10-28 | 3M Innovative Properties Company | Particles including polytetrafluoroethylene and process for making a three-dimensional article |
CN112591840B (zh) * | 2020-11-26 | 2022-04-29 | 南京大学 | 一种含氟水体的沉淀吸附深度除氟工艺 |
US20240132643A1 (en) | 2021-02-26 | 2024-04-25 | 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 |
Family Cites Families (9)
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 (de) | 1979-02-02 | 1980-08-07 | Hoechst Ag | Rueckgewinnung fluorierter emulgatorsaeuren aus basischen anionenaustauschern |
DE2908001C2 (de) | 1979-03-01 | 1981-02-19 | Hoechst Ag, 6000 Frankfurt | Verfahren zur Herstellung konzentrierter Dispersionen von Fluorpolymeren |
US5017480A (en) * | 1987-08-10 | 1991-05-21 | Ajimomoto Co., Inc. | Process for recovering L-amino acid from fermentation liquors |
DE4213154C1 (hu) * | 1992-04-22 | 1993-06-17 | Hoechst Ag, 6230 Frankfurt, De | |
DE4402694A1 (de) | 1993-06-02 | 1995-08-03 | Hoechst Ag | Verfahren zur Rückgewinnung von fluorierten Carbonsäuren |
DE19824614A1 (de) * | 1998-06-02 | 1999-12-09 | Dyneon Gmbh | Verfahren zur Rückgewinnung von fluorierten Alkansäuren aus Abwässern |
DE19824615A1 (de) * | 1998-06-02 | 1999-12-09 | Dyneon Gmbh | Verfahren zur Rückgewinnung von fluorierten Alkansäuren aus Abwässern |
-
1999
- 1999-07-17 DE DE19933696A patent/DE19933696A1/de not_active Withdrawn
-
2000
- 2000-07-11 MX MXPA02000597A patent/MXPA02000597A/es not_active Application Discontinuation
- 2000-07-11 ES ES00954467T patent/ES2173825T1/es active Pending
- 2000-07-11 JP JP2001511374A patent/JP3820369B2/ja not_active Expired - Fee Related
- 2000-07-11 BR BR0012520-2A patent/BR0012520A/pt not_active Application Discontinuation
- 2000-07-11 CZ CZ2002128A patent/CZ2002128A3/cs unknown
- 2000-07-11 HU HU0201949A patent/HUP0201949A3/hu unknown
- 2000-07-11 AU AU66915/00A patent/AU767303B2/en not_active Ceased
- 2000-07-11 CN CNB00810428XA patent/CN1145587C/zh not_active Expired - Fee Related
- 2000-07-11 RU RU2002100912/15A patent/RU2248328C2/ru not_active IP Right Cessation
- 2000-07-11 TR TR2002/00135T patent/TR200200135T2/xx unknown
- 2000-07-11 KR KR10-2002-7000664A patent/KR100447479B1/ko not_active IP Right Cessation
- 2000-07-11 WO PCT/EP2000/006556 patent/WO2001005710A1/de active Search and Examination
- 2000-07-11 US US10/009,757 patent/US6706193B1/en not_active Expired - Fee Related
- 2000-07-11 PL PL00364027A patent/PL364027A1/xx unknown
- 2000-07-11 EP EP00954467A patent/EP1208065A1/de not_active Ceased
- 2000-07-11 CA CA002379931A patent/CA2379931A1/en not_active Abandoned
- 2000-07-13 TW TW089113945A patent/TW574151B/zh not_active IP Right Cessation
- 2000-07-13 AR ARP000103601A patent/AR024730A1/es not_active Application Discontinuation
- 2000-12-11 SA SA00210609A patent/SA00210609B1/ar unknown
-
2002
- 2002-01-16 ZA ZA200200397A patent/ZA200200397B/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO0105710A1 * |
Also Published As
Publication number | Publication date |
---|---|
TW574151B (en) | 2004-02-01 |
PL364027A1 (en) | 2004-11-29 |
RU2248328C2 (ru) | 2005-03-20 |
AU767303B2 (en) | 2003-11-06 |
HUP0201949A3 (en) | 2003-01-28 |
DE19933696A1 (de) | 2001-01-18 |
KR100447479B1 (ko) | 2004-09-07 |
ZA200200397B (en) | 2003-06-25 |
AU6691500A (en) | 2001-02-05 |
SA00210609B1 (ar) | 2006-08-22 |
CN1145587C (zh) | 2004-04-14 |
CZ2002128A3 (cs) | 2002-10-16 |
CN1361751A (zh) | 2002-07-31 |
JP3820369B2 (ja) | 2006-09-13 |
BR0012520A (pt) | 2002-04-02 |
TR200200135T2 (tr) | 2002-06-21 |
MXPA02000597A (es) | 2003-07-21 |
US6706193B1 (en) | 2004-03-16 |
JP2003505223A (ja) | 2003-02-12 |
CA2379931A1 (en) | 2001-01-25 |
AR024730A1 (es) | 2002-10-23 |
ES2173825T1 (es) | 2002-11-01 |
HUP0201949A2 (hu) | 2002-11-28 |
KR20020039322A (ko) | 2002-05-25 |
WO2001005710A1 (de) | 2001-01-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1208065A1 (de) | Verfahren zur rückgewinnung fluorierter emulgatoren aus wässrigen phasen | |
EP1093441B1 (de) | Verfahren zur rückgewinnung von fluorierten alkansäuren aus abwässern | |
DE60214343T2 (de) | Prozess zur Reduzierung des Gehaltes an fluorierten Emulgatoren in wässrigen Fluorpolymer-Dispersionen | |
EP1155055B1 (de) | Wässrige dispersionen von fluorpolymeren | |
DE60304469T2 (de) | Verfahren zur gewinnung von fluor-enthaltenden emulgatoren | |
DE602004004615T2 (de) | Verfahren zur Herstellung von Fluorpolymerdispersionen | |
EP1353975B2 (de) | Verfahren zur herstellung von wasser-in-wasser-polymerdispersionen | |
WO1995011269A1 (de) | Verfahren zur herstellung von wasserlöslichen polymerdispersionen mit hohem polymeranteil | |
DE69407731T2 (de) | Entfernung von Monomerresten | |
DE2044986C3 (de) | Verfahren zur Gewinnung von Perfluorcarbonsäuren | |
DE60217944T2 (de) | Verfahren zur Herstellung von nicht thermisch verarbeitbaren Feinpulvern eines homopolymeren oder modifizierten PTFE | |
EP0846789A1 (de) | Verfahren zur Modifikation des Durchflusswiderstandes von Diaphragmen | |
DE69019342T2 (de) | Koagulation mit thermischer Energie und Waschung der Latexteilchen. | |
EP0073296B2 (de) | Verfahren zur Herstellung von Acrylkunststoffdispersionen | |
DE4309655C2 (de) | Verfahren zur Herstellung von Polyvinylchloridharz für die Pasten- bzw. Plastisolherstellung | |
DE60109119T2 (de) | Verfahren zum Herstellen von Paraffinwachs | |
DE69401714T2 (de) | Verfahren zur entfernung von aschebildenden rückständen aus vinylalkoholpolymeren | |
DE2203465C2 (de) | Verfahren zur Herstellung von wäßrigen Dispersionen von Polytetrafluoräthylen | |
DE4118526A1 (de) | Verfahren zur entfernung von restmonomeren und niedermolekularen verunreinigungen aus waessrigen polymerdispersionen | |
DE2733272A1 (de) | Verfahren zum abtrennen eines niedermolekularen polymerisats mit einer viskositaet von 5 bis 100 000 cp bei 30 grad celsius aus einer dieses polymerisat und einen inaktivierten katalysator enthaltenden loesung | |
DE1454874A1 (de) | Verfahren zur Herstellung von starkbasischen Anionenaustauscherharzteilchen | |
DE69406318T2 (de) | Verfahren zur Elektrolyse eines Alkali-Metall Chlorides | |
EP2239276A1 (de) | Verwendung nichtionischer Tenside als Emulgatoren für die Emulsionspolymerisation III | |
DE2625683C2 (de) | Verfahren zur Herstellung eines stark basischen Anionenaustauschers in Hydroxylform mit niedrigem Chloridgehalt | |
EP0011192B1 (de) | Verfahren zur Aufbereitung von wässrigen (Co-)Polymerisatdispersionen, die bei der Emulsionspolymerisation von Vinylchlorid erhalten werden |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20011211 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
TCNL | Nl: translation of patent claims filed | ||
17Q | First examination report despatched |
Effective date: 20020625 |
|
REG | Reference to a national code |
Ref country code: GR Ref legal event code: PP Ref document number: 20020300021 Country of ref document: GR |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: BA2A Ref document number: 2173825 Country of ref document: ES Kind code of ref document: T1 |
|
APBN | Date of receipt of notice of appeal recorded |
Free format text: ORIGINAL CODE: EPIDOSNNOA2E |
|
APBR | Date of receipt of statement of grounds of appeal recorded |
Free format text: ORIGINAL CODE: EPIDOSNNOA3E |
|
APAA | Appeal reference recorded |
Free format text: ORIGINAL CODE: EPIDOS REFN |
|
APAF | Appeal reference modified |
Free format text: ORIGINAL CODE: EPIDOSCREFNE |
|
APAM | Information on closure of appeal procedure modified |
Free format text: ORIGINAL CODE: EPIDOSCNOA9E |
|
APBT | Appeal procedure closed |
Free format text: ORIGINAL CODE: EPIDOSNNOA9E |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
18R | Application refused |
Effective date: 20060817 |