IT8023788A0 - Particelle di ferro metallico per registrazione magnetica. - Google Patents

Particelle di ferro metallico per registrazione magnetica.

Info

Publication number
IT8023788A0
IT8023788A0 IT8023788A IT2378880A IT8023788A0 IT 8023788 A0 IT8023788 A0 IT 8023788A0 IT 8023788 A IT8023788 A IT 8023788A IT 2378880 A IT2378880 A IT 2378880A IT 8023788 A0 IT8023788 A0 IT 8023788A0
Authority
IT
Italy
Prior art keywords
magnetic recording
metallic iron
iron particles
particles
metallic
Prior art date
Application number
IT8023788A
Other languages
English (en)
Other versions
IT1132024B (it
Inventor
Dizikes Louis James
Rodrian Richard Herman
Original Assignee
Pfizer
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 Pfizer filed Critical Pfizer
Publication of IT8023788A0 publication Critical patent/IT8023788A0/it
Application granted granted Critical
Publication of IT1132024B publication Critical patent/IT1132024B/it

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C225/00—Compounds containing amino groups and doubly—bound oxygen atoms bound to the same carbon skeleton, at least one of the doubly—bound oxygen atoms not being part of a —CHO group, e.g. amino ketones
    • C07C225/02—Compounds containing amino groups and doubly—bound oxygen atoms bound to the same carbon skeleton, at least one of the doubly—bound oxygen atoms not being part of a —CHO group, e.g. amino ketones having amino groups bound to acyclic carbon atoms of the carbon skeleton
    • C07C225/04—Compounds containing amino groups and doubly—bound oxygen atoms bound to the same carbon skeleton, at least one of the doubly—bound oxygen atoms not being part of a —CHO group, e.g. amino ketones having amino groups bound to acyclic carbon atoms of the carbon skeleton the carbon skeleton being saturated
    • C07C225/06—Compounds containing amino groups and doubly—bound oxygen atoms bound to the same carbon skeleton, at least one of the doubly—bound oxygen atoms not being part of a —CHO group, e.g. amino ketones having amino groups bound to acyclic carbon atoms of the carbon skeleton the carbon skeleton being saturated and acyclic
    • 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
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/06—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder
    • H01F1/065—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder obtained by a reduction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/18—Non-metallic particles coated with metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
    • B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
    • B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
    • 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
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/06—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder
    • H01F1/061—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder with a protective layer

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Hard Magnetic Materials (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Compounds Of Iron (AREA)
  • Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)
IT23788/80A 1979-07-30 1980-07-29 Particelle di ferro metallico per registrazione magnetica IT1132024B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/061,797 US4256484A (en) 1979-07-30 1979-07-30 Metallic iron particles for magnetic recording

Publications (2)

Publication Number Publication Date
IT8023788A0 true IT8023788A0 (it) 1980-07-29
IT1132024B IT1132024B (it) 1986-06-25

Family

ID=22038209

Family Applications (1)

Application Number Title Priority Date Filing Date
IT23788/80A IT1132024B (it) 1979-07-30 1980-07-29 Particelle di ferro metallico per registrazione magnetica

Country Status (22)

Country Link
US (1) US4256484A (it)
JP (1) JPS5623203A (it)
KR (1) KR830002684B1 (it)
AU (1) AU522889B2 (it)
BE (1) BE884529A (it)
BR (1) BR8004772A (it)
CA (1) CA1132008A (it)
CH (1) CH639014A5 (it)
DD (1) DD153195A5 (it)
DE (1) DE3028556C2 (it)
ES (1) ES8106267A1 (it)
FI (1) FI70339C (it)
FR (1) FR2462222A1 (it)
IL (1) IL60693A (it)
IN (1) IN154408B (it)
IT (1) IT1132024B (it)
MX (1) MX152979A (it)
NL (1) NL8004337A (it)
PH (1) PH15943A (it)
PT (1) PT71622A (it)
SE (1) SE454548B (it)
SU (1) SU1419510A3 (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2815712A1 (de) * 1978-04-12 1979-10-25 Bayer Ag Eisenoxide zur magnetischen signalaufzeichnung und verfahren zu deren herstellung
JPS5677931A (en) * 1979-11-28 1981-06-26 Tdk Corp Magnetic recording medium and its producton
DE3783380D1 (de) * 1986-03-14 1993-02-18 Basf Ag Verfahren zur herstellung von nadelfoermigem alpha-eisen-iii-oxid.
US5219554A (en) 1986-07-03 1993-06-15 Advanced Magnetics, Inc. Hydrated biodegradable superparamagnetic metal oxides
JPS63302420A (ja) * 1987-01-16 1988-12-09 Nissan Chem Ind Ltd 磁性鉄粉の製造法
KR100870992B1 (ko) 2007-04-04 2008-12-01 나노케미칼 주식회사 열전지 열원용 영가철 분말 제조방법

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1215996A (fr) * 1957-12-16 1960-04-21 Thomson Houston Comp Francaise Matériaux magnétiques agglomérés et leur fabrication
JPS5528129B1 (it) * 1967-08-10 1980-07-25
NL162233C (nl) * 1968-03-05 1980-04-15 Philips Nv Werkwijze ter bereiding van een in hoofdzaak uit ijzer bestaand magnetisch stabiel poeder, voor magnetische registratie.
NL163355C (nl) * 1969-04-08 1980-08-15 Philips Nv Werkwijze ter bereiding van een in hoofdzaak uit ijzer bestaand magnetisch stabiel metaalpoeder, voor magnetische registratie.
US3623859A (en) * 1970-05-22 1971-11-30 Ampex Process of making acicular stable magnetic iron particles
US3663318A (en) * 1970-10-05 1972-05-16 Du Pont Process for making ferromagnetic metal powders
DE2212933A1 (de) * 1972-03-17 1973-09-20 Philips Nv Verfahren zur herstellung eines im wesentlichen aus eisen bestehenden metallpulvers
US4067755A (en) * 1974-06-25 1978-01-10 Tdk Electronics Company, Ltd. Method of making powdered magnetic iron oxide material
JPS5133758A (it) * 1974-09-17 1976-03-23 Fuji Photo Film Co Ltd
JPS5142990A (it) * 1974-10-11 1976-04-12 Fuji Photo Film Co Ltd
IT1026663B (it) * 1974-11-29 1978-10-20 Montedison Spa Procedimento per preparare polve ri metalliche a base di ferro per registrzione hagnetica
US4020236A (en) * 1975-07-22 1977-04-26 Fuji Photo Film Co., Ltd. Process for producing a magnetic material and magnetic recording medium containing the same
DE2909995C2 (de) * 1978-03-16 1984-06-28 Kanto Denka Kogyo Co., Ltd., Tokyo Verfahren zur Herstellung eines Magnetpulvers

Also Published As

Publication number Publication date
PT71622A (en) 1980-08-01
JPS5623203A (en) 1981-03-05
FI70339B (fi) 1986-02-28
JPH0146561B2 (it) 1989-10-09
US4256484A (en) 1981-03-17
CA1132008A (en) 1982-09-21
KR830002684B1 (ko) 1983-12-07
DE3028556A1 (de) 1981-02-12
MX152979A (es) 1986-07-11
FI70339C (fi) 1986-09-12
CH639014A5 (fr) 1983-10-31
DD153195A5 (de) 1981-12-30
ES493819A0 (es) 1981-08-01
IN154408B (it) 1984-10-27
FR2462222A1 (fr) 1981-02-13
FI802370A7 (fi) 1981-01-31
NL8004337A (nl) 1981-02-03
ES8106267A1 (es) 1981-08-01
SE8004264L (sv) 1981-01-31
BR8004772A (pt) 1981-02-10
PH15943A (en) 1983-04-29
KR830003787A (ko) 1983-06-22
IL60693A (en) 1983-02-23
SU1419510A3 (ru) 1988-08-23
SE454548B (sv) 1988-05-09
AU522889B2 (en) 1982-07-01
AU6087080A (en) 1981-06-18
FR2462222B1 (it) 1984-01-06
BE884529A (fr) 1981-01-29
DE3028556C2 (de) 1986-04-17
IT1132024B (it) 1986-06-25

Similar Documents

Publication Publication Date Title
JPS5644169A (en) Magnetic record assembly
DE3172556D1 (en) Magnetic recording media
EP0112924A4 (en) MAGNETIC RECORDING MEDIUM.
EP0112925A4 (en) MAGNETIC RECORDING MEDIUM.
JPS5240319A (en) Magnetic recording assembly
IT8224714A0 (it) Apparato magnetico di registrazione.
GB2055394B (en) Magnetic recording medium
IT8123256A0 (it) Procedimento per produrre particelle metalliche ferro-magnetiche.
JPS57126103A (en) Cohesive magnetic iron particle
GB2053257B (en) Magnetic recording medium
GB2069874B (en) Magnetic recording media
NL190856C (nl) Magnetisch registratiemateriaal.
JPS5274307A (en) Magnetic recording media
DE3367038D1 (en) Ferro magnetic recording materials
GB2055780B (en) Magnetic powder for magnetic recording medium
GB2060487B (en) Magnetic stripe
IT8323527A0 (it) Apparecchiatura di registrazione magnetica.
IT8023788A0 (it) Particelle di ferro metallico per registrazione magnetica.
IT7926764A0 (it) Ossido di ferro magnetico perfezionato modificato con cobalto.
JPS5278403A (en) Magnetic recording media
GB2054609B (en) Magnetic recording medium
GB2044789B (en) Magnetic recording medium
JPS5275410A (en) Magnetic recording media
GB2052130B (en) Magnetic recording disc cortridge
GB2019633B (en) Magnetic recording