IT1270199B - Preparazione di particelle miste ultrafini da microemulsioni di pepe - Google Patents

Preparazione di particelle miste ultrafini da microemulsioni di pepe

Info

Publication number
IT1270199B
IT1270199B ITMI941211A ITMI941211A IT1270199B IT 1270199 B IT1270199 B IT 1270199B IT MI941211 A ITMI941211 A IT MI941211A IT MI941211 A ITMI941211 A IT MI941211A IT 1270199 B IT1270199 B IT 1270199B
Authority
IT
Italy
Prior art keywords
perfluoropolyether
preparation
oil
surfactant
metals
Prior art date
Application number
ITMI941211A
Other languages
English (en)
Inventor
Alba Chittofrati
Viviana Boselli
Original Assignee
Ausimont Spa
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.)
Filing date
Publication date
Application filed by Ausimont Spa filed Critical Ausimont Spa
Priority to ITMI941211A priority Critical patent/IT1270199B/it
Publication of ITMI941211A0 publication Critical patent/ITMI941211A0/it
Priority to DE69513444T priority patent/DE69513444T2/de
Priority to EP95108723A priority patent/EP0686447B1/en
Priority to US08/475,105 priority patent/US5670088A/en
Priority to AT95108723T priority patent/ATE186862T1/de
Priority to ES95108723T priority patent/ES2141281T3/es
Priority to JP14369895A priority patent/JP3862768B2/ja
Publication of ITMI941211A1 publication Critical patent/ITMI941211A1/it
Application granted granted Critical
Publication of IT1270199B publication Critical patent/IT1270199B/it

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/14—Methods for preparing oxides or hydroxides in general
    • C01B13/32—Methods for preparing oxides or hydroxides in general by oxidation or hydrolysis of elements or compounds in the liquid or solid state or in non-aqueous solution, e.g. sol-gel process
    • C01B13/328—Methods for preparing oxides or hydroxides in general by oxidation or hydrolysis of elements or compounds in the liquid or solid state or in non-aqueous solution, e.g. sol-gel process by processes making use of emulsions, e.g. the kerosine process
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/0018—Mixed oxides or hydroxides
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/51—Particles with a specific particle size distribution
    • C01P2004/52—Particles with a specific particle size distribution highly monodisperse size distribution
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S516/00—Colloid systems and wetting agents; subcombinations thereof; processes of
    • Y10S516/922—Colloid systems having specified particle size, range, or distribution, e.g. bimodal particle distribution
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S516/00—Colloid systems and wetting agents; subcombinations thereof; processes of
    • Y10S516/924—Significant dispersive or manipulative operation or step in making or stabilizing colloid system
    • Y10S516/927—Significant dispersive or manipulative operation or step in making or stabilizing colloid system in situ formation of a colloid system making or stabilizing agent which chemical reaction

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Nanotechnology (AREA)
  • Inorganic Chemistry (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Composite Materials (AREA)
  • Power Engineering (AREA)
  • Materials Engineering (AREA)
  • Colloid Chemistry (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
  • Medicinal Preparation (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Seasonings (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

Processo per la preparazione di dispersioni contenenti ossidi misti aventi dimensione minore o uguale di 60 nm e aventi bassa polidispersità comprendente i seguenti stadi:P1) preparazione di una microemulsione di acqua in olio, l'olio essendo un perfluoropolietere, detta microemulsione essendo ottenuta utilizzando un tensioattivo perfluoropolietereo, la fase acquosa contiene una soluzione di un sale inorganico di un metallo M1;P2) preparazione di un sale metallico M2 di un tensioattivo perfluoropolietereo anionico, essendo solubile nell'olio perfluoropolietereo utilizzato in P1, la quantità in moli di tensioattivo essendo tale da legarsi completamente al catione e da non essere in eccesso;P3) aggiunta di P2 a P1 per l'ottenimento del sistema di reazione contenente i due metalli M1 e M2; M1 in fase acquosa e M2 in fase olio perfluoropolietereo;P4) alcalinizzazione di P3 e contemporaneo o successivo riscaldamento, se P3 non è già stato riscaldato, alla temperatura necessaria per la formazione dell'ossido desiderato; quindi si raffredda e si separa il surnatante acquoso;M1 e M2 appartengono ai metalli in grado di dare ossidi; quando i due metalli M1 e M2 hanno valenza diversa allora M1 è lo ione metallico a valenza inferiore diverso da Fe(II), opzionalmente in miscela con Fe(II), M2 lo ione metallico a valenza superiore.
ITMI941211A 1994-06-09 1994-06-09 Preparazione di particelle miste ultrafini da microemulsioni di pepe IT1270199B (it)

Priority Applications (7)

Application Number Priority Date Filing Date Title
ITMI941211A IT1270199B (it) 1994-06-09 1994-06-09 Preparazione di particelle miste ultrafini da microemulsioni di pepe
DE69513444T DE69513444T2 (de) 1994-06-09 1995-06-07 Präparation von gemischten ultrafeinen Partikeln aus einer PFPE Mikroemulsion
EP95108723A EP0686447B1 (en) 1994-06-09 1995-06-07 Preparation of mixed ultrafine particles form PFPE microemulsion
US08/475,105 US5670088A (en) 1994-06-09 1995-06-07 Preparation of mixed ultrafine particles from PFPE micro-emulsion
AT95108723T ATE186862T1 (de) 1994-06-09 1995-06-07 Präparation von gemischten ultrafeinen partikeln aus einer pfpe mikroemulsion
ES95108723T ES2141281T3 (es) 1994-06-09 1995-06-07 Preparacion de particulas mezcladas ultrafinas a partir de una microemulsion pfpe.
JP14369895A JP3862768B2 (ja) 1994-06-09 1995-06-09 Ｐｆｐｅマイクロエマルションからの混合超微小粒子の製造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI941211A IT1270199B (it) 1994-06-09 1994-06-09 Preparazione di particelle miste ultrafini da microemulsioni di pepe

Publications (3)

Publication Number Publication Date
ITMI941211A0 ITMI941211A0 (it) 1994-06-09
ITMI941211A1 ITMI941211A1 (it) 1995-12-09
IT1270199B true IT1270199B (it) 1997-04-29

Family

ID=11369091

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI941211A IT1270199B (it) 1994-06-09 1994-06-09 Preparazione di particelle miste ultrafini da microemulsioni di pepe

Country Status (7)

Country Link
US (1) US5670088A (it)
EP (1) EP0686447B1 (it)
JP (1) JP3862768B2 (it)
AT (1) ATE186862T1 (it)
DE (1) DE69513444T2 (it)
ES (1) ES2141281T3 (it)
IT (1) IT1270199B (it)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6413489B1 (en) * 1997-04-15 2002-07-02 Massachusetts Institute Of Technology Synthesis of nanometer-sized particles by reverse micelle mediated techniques
US6036735A (en) * 1998-03-17 2000-03-14 Jps Converter And Industrial Fabrics Corporation Finish for glass fiber fabric
US8637055B2 (en) 2002-06-24 2014-01-28 Ahava-Dead Sea Laboratories Ltd. Cosmetic compositions containing small magnetic particles
JP4812233B2 (ja) * 2003-02-28 2011-11-09 トヨタ自動車株式会社 複合酸化物の製造方法
DE602004007187T3 (de) * 2003-05-21 2017-09-28 Toyota Jidosha Kabushiki Kaisha Verfahren zur Herstellung eines porösen Mischoxids
JP4857526B2 (ja) * 2004-05-06 2012-01-18 トヨタ自動車株式会社 複合酸化物粉末の製造方法
JP4576909B2 (ja) * 2004-07-13 2010-11-10 トヨタ自動車株式会社 多孔質体の製造方法
US20090098044A1 (en) * 2004-11-15 2009-04-16 Australian Nuclear Science And Technology Organisation Solid particles from controlled destabilisation of microemulsions
JP5744902B2 (ja) 2009-12-18 2015-07-08 ソルヴェイ・スペシャルティ・ポリマーズ・イタリー・エッセ・ピ・ア フルオロエラストマーの製造方法
JP5684283B2 (ja) * 2009-12-18 2015-03-11 ソルヴェイ・スペシャルティ・ポリマーズ・イタリー・エッセ・ピ・ア フルオロポリマーの製造方法
CN106298146B (zh) * 2016-10-26 2018-06-05 山东大学 一种提高FeCoB/FeB磁性液体稳定性的新方法
CN110201659A (zh) * 2019-05-14 2019-09-06 齐鲁理工学院 一种活性炭负载纳米级二氧化钛的方法
CN113813798B (zh) * 2021-09-28 2023-11-14 浙江工商大学 一种钴@铁双金属氢氧化物纳米粒子掺杂的混合基质超滤膜及其制备方法

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3665041A (en) * 1967-04-04 1972-05-23 Montedison Spa Perfluorinated polyethers and process for their preparation
US3764540A (en) * 1971-05-28 1973-10-09 Us Interior Magnetofluids and their manufacture
US3843540A (en) * 1972-07-26 1974-10-22 Us Interior Production of magnetic fluids by peptization techniques
US4094804A (en) * 1974-08-19 1978-06-13 Junzo Shimoiizaka Method for preparing a water base magnetic fluid and product
US4523039A (en) * 1980-04-11 1985-06-11 The University Of Texas Method for forming perfluorocarbon ethers
FR2515198A1 (fr) * 1981-10-22 1983-04-29 Centre Nat Rech Scient Microemulsions aqueuses de fluorocarbures indefiniment stables a une temperature donnee, procede d'obtention et application a titre de transporteurs d'oxygene
DE3485616D1 (de) * 1983-12-26 1992-05-07 Daikin Ind Ltd Verfahren zur herstellung von halogen enthaltenden polyathern
GR852069B (it) * 1984-08-29 1985-12-30 Du Pont
IT1188635B (it) * 1986-03-27 1988-01-20 Ausimont Spa Lubrificanti per fluoropolieterei interni per mezzi magnetici di registrazione
IL82308A (en) * 1986-06-26 1990-11-29 Ausimont Spa Microemulsions containing perfluoropolyethers
FR2606419B1 (fr) * 1986-11-07 1994-04-01 Commissariat A Energie Atomique Procede de fabrication d'une composition ferromagnetique, cristal liquide ferromagnetique obtenu par ce procede et dispositif utilisant ce cristal liquide
CA1337750C (en) * 1987-11-24 1995-12-19 John L. Fulton Supercritical fluid reverse micelle separation
ES2009404A6 (es) * 1988-11-24 1989-09-16 Quintela Manuel Arturo Lopez Procedimiento para a obtencion de particulas magneticas ultrafinas de nd-fe-b de diferentes tamanos.
US5147841A (en) * 1990-11-23 1992-09-15 The United States Of America As Represented By The United States Department Of Energy Method for the preparation of metal colloids in inverse micelles and product preferred by the method
US5147573A (en) * 1990-11-26 1992-09-15 Omni Quest Corporation Superparamagnetic liquid colloids
IT1256721B (it) * 1992-12-16 1995-12-15 Ausimont Spa Processo per impartire oleo- ed idro-repellenza alla superficie di materiali ceramici porosi

Also Published As

Publication number Publication date
EP0686447A3 (en) 1997-01-29
ATE186862T1 (de) 1999-12-15
DE69513444D1 (de) 1999-12-30
EP0686447A2 (en) 1995-12-13
JPH0838879A (ja) 1996-02-13
EP0686447B1 (en) 1999-11-24
ITMI941211A0 (it) 1994-06-09
DE69513444T2 (de) 2000-07-06
JP3862768B2 (ja) 2006-12-27
US5670088A (en) 1997-09-23
ES2141281T3 (es) 2000-03-16
ITMI941211A1 (it) 1995-12-09

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Effective date: 19970624