ES468596A1 - Procedimiento para estabilizar dioxido de cromo ferromagne- tico - Google Patents
Procedimiento para estabilizar dioxido de cromo ferromagne- ticoInfo
- Publication number
- ES468596A1 ES468596A1 ES468596A ES468596A ES468596A1 ES 468596 A1 ES468596 A1 ES 468596A1 ES 468596 A ES468596 A ES 468596A ES 468596 A ES468596 A ES 468596A ES 468596 A1 ES468596 A1 ES 468596A1
- Authority
- ES
- Spain
- Prior art keywords
- chromium dioxide
- ferromagnetic chromium
- stabilized
- preparation
- metal
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
- G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
- G11B5/70636—CrO2
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G37/00—Compounds of chromium
- C01G37/02—Oxides or hydrates thereof
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/42—Magnetic properties
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
- C01P2006/82—Compositional purity water content
-
- 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
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/90—Magnetic feature
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
- Y10T428/2993—Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Paints Or Removers (AREA)
- Compounds Of Iron (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Procedimiento para estabilizar dióxido de cromo ferromagnético, caracterizado porque esencialmente comprende el revestimiento de sus partículas con una sustancia estabilizante constituida por un polifosfato de zinc, aluminio o cromo (III) con una elevada relación molar fósforo/metal y que presentan dependiendo del metal, la fórmula siguiente: P205.nZn0.mH2O en donde "n" está comprendido, en general, entre 0,286 y 0,667 mientras que "m" está comprendido, por lo general, entre 0 y 2,570; o bien P205.nAl203.-mH2O en donde "n" está comprendido, en general, entre 0,225 y 0,500, mientras que "m" está comprendido, generalmente, entre 0 y 2,68; o bien P205.nCr2O3,mH2O en donde "n" está comprendido, en general, entre 0,143 y 0,333, mientras que "m" está comprendido, por lo general, entre 0,0002 y 2,46.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2222477A IT1085216B (it) | 1977-04-07 | 1977-04-07 | Biossido di cromo ferromagnetico stabilizzato e procedimento per la loro preparazione |
IT2050878A IT1108807B (it) | 1978-02-22 | 1978-02-22 | Biossido di cromo ferromagnetico stabilizzato e procedimento per ottenerlo |
Publications (1)
Publication Number | Publication Date |
---|---|
ES468596A1 true ES468596A1 (es) | 1979-09-16 |
Family
ID=26327553
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES468596A Expired ES468596A1 (es) | 1977-04-07 | 1978-04-06 | Procedimiento para estabilizar dioxido de cromo ferromagne- tico |
Country Status (11)
Country | Link |
---|---|
US (1) | US4169802A (es) |
JP (1) | JPS53146994A (es) |
BR (1) | BR7802124A (es) |
DD (1) | DD135374A5 (es) |
DE (1) | DE2814407A1 (es) |
DK (1) | DK146478A (es) |
ES (1) | ES468596A1 (es) |
FR (1) | FR2386486A1 (es) |
GB (1) | GB1573857A (es) |
NL (1) | NL7803520A (es) |
SE (1) | SE7803710L (es) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1097025B (it) * | 1978-07-21 | 1985-08-26 | Montedison Spa | Biossido di cromo ferromagnetico stabilizzato e procedimento per ottenerlo |
DE3263019D1 (en) * | 1981-10-26 | 1985-05-15 | Du Pont | Surface modified ferromagnetic chromium dioxide |
US4668283A (en) * | 1984-06-25 | 1987-05-26 | Mitsui Toatsu Chemicals, Incorporated | Magnetic powder and production process thereof |
DE3536116A1 (de) * | 1985-10-10 | 1987-04-16 | Basf Ag | Verfahren zur stabilisierung von nadelfoermigem ferromagnetischem chromdioxid |
EP0238069B1 (en) * | 1986-03-20 | 1993-02-10 | Hitachi Maxell Ltd. | Magnetic recording medium |
DE3610411A1 (de) * | 1986-03-27 | 1987-10-01 | Basf Ag | Verfahren zur stabilisierung von nadelfoermigem ferromagnetischem chromdioxid |
JPH0760520B2 (ja) * | 1986-07-09 | 1995-06-28 | 日立マクセル株式会社 | 磁性粉およびこれを用いた磁気記録媒体 |
EP0615537B1 (en) * | 1991-10-01 | 2004-01-02 | Minnesota Mining And Manufacturing Company | Coextruded pressure-sensitive adhesive tape and method of making |
BRPI0403713B1 (pt) * | 2004-08-30 | 2021-01-12 | Universidade Estadual De Campinas - Unicamp | processo de fabricação de um pigmento branco baseado na síntese de partículas ocas de ortofosfato ou polifosfato de alumínio |
US7763359B2 (en) * | 2004-08-30 | 2010-07-27 | Bunge Fertilizantes S.A. | Aluminum phosphate, polyphosphate and metaphosphate particles and their use as pigments in paints and method of making same |
CN103923510A (zh) * | 2006-08-11 | 2014-07-16 | 鲍吉肥料公司 | 磷酸铝或多聚磷酸铝颗粒的制备 |
US9023145B2 (en) * | 2008-02-12 | 2015-05-05 | Bunge Amorphic Solutions Llc | Aluminum phosphate or polyphosphate compositions |
AR075381A1 (es) * | 2009-02-10 | 2011-03-30 | Unicamp | Uso de particulas de fosfato, polifosfato y metafosfato, de aluminio en aplicaciones de recubrimiento de papeles. |
US9371454B2 (en) | 2010-10-15 | 2016-06-21 | Bunge Amorphic Solutions Llc | Coating compositions with anticorrosion properties |
US9005355B2 (en) | 2010-10-15 | 2015-04-14 | Bunge Amorphic Solutions Llc | Coating compositions with anticorrosion properties |
US10577543B2 (en) * | 2011-10-27 | 2020-03-03 | Raymond Roger Wallage | Efficient oil shale recovery method |
US9550943B2 (en) | 2011-10-27 | 2017-01-24 | Raymond Roger Wallage | Efficient oil shale recovery method |
US9078445B2 (en) | 2012-04-16 | 2015-07-14 | Bunge Amorphic Solutions Llc | Antimicrobial chemical compositions |
US9155311B2 (en) | 2013-03-15 | 2015-10-13 | Bunge Amorphic Solutions Llc | Antimicrobial chemical compositions |
US9611147B2 (en) | 2012-04-16 | 2017-04-04 | Bunge Amorphic Solutions Llc | Aluminum phosphates, compositions comprising aluminum phosphate, and methods for making the same |
FR2998815B1 (fr) * | 2012-12-03 | 2017-01-27 | Arkema France | Catalyseur prepare par broyage reactif |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3686031A (en) * | 1969-11-26 | 1972-08-22 | Du Pont | Metal phosphate coated ferromagnetic chromium oxide and its preparation |
DE2120206A1 (de) * | 1971-04-24 | 1972-11-02 | Badische Anilin- & Soda-Fabrik Ag, 6700 Ludwigshafen | Ferromagnetische Chromdioxidkristalle |
US3811942A (en) * | 1971-12-28 | 1974-05-21 | Du Pont | Phosphorus-modified ferromagnetic chromium dioxide |
US4068038A (en) * | 1972-05-24 | 1978-01-10 | Montecatini Edison S.P.A. | Stabilized chromium dioxide compositions |
NL7306877A (es) * | 1972-05-24 | 1973-11-27 | ||
DE2249273A1 (de) * | 1972-10-07 | 1974-04-18 | Bayer Ag | Stabilisiertes, ferromagnetisches chromdioxid und verfahren zu seiner herstellung |
-
1978
- 1978-03-30 FR FR7809340A patent/FR2386486A1/fr not_active Withdrawn
- 1978-04-03 NL NL7803520A patent/NL7803520A/xx not_active Application Discontinuation
- 1978-04-03 DK DK146478A patent/DK146478A/da not_active IP Right Cessation
- 1978-04-03 SE SE7803710A patent/SE7803710L/xx unknown
- 1978-04-04 US US05/893,348 patent/US4169802A/en not_active Expired - Lifetime
- 1978-04-04 DE DE19782814407 patent/DE2814407A1/de not_active Withdrawn
- 1978-04-05 BR BR7802124A patent/BR7802124A/pt unknown
- 1978-04-06 ES ES468596A patent/ES468596A1/es not_active Expired
- 1978-04-06 GB GB13570/78A patent/GB1573857A/en not_active Expired
- 1978-04-06 DD DD78204636A patent/DD135374A5/xx unknown
- 1978-04-07 JP JP4115178A patent/JPS53146994A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE2814407A1 (de) | 1978-10-19 |
US4169802A (en) | 1979-10-02 |
DK146478A (da) | 1978-10-08 |
SE7803710L (sv) | 1978-10-08 |
DD135374A5 (de) | 1979-05-02 |
NL7803520A (nl) | 1978-10-10 |
GB1573857A (en) | 1980-08-28 |
FR2386486A1 (fr) | 1978-11-03 |
BR7802124A (pt) | 1979-04-03 |
JPS53146994A (en) | 1978-12-21 |
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