FI70339C - Foerfarande foer framstaellning av ett magnetiskt stabilt jaernpulver - Google Patents

Foerfarande foer framstaellning av ett magnetiskt stabilt jaernpulver Download PDF

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Publication number
FI70339C
FI70339C FI802370A FI802370A FI70339C FI 70339 C FI70339 C FI 70339C FI 802370 A FI802370 A FI 802370A FI 802370 A FI802370 A FI 802370A FI 70339 C FI70339 C FI 70339C
Authority
FI
Finland
Prior art keywords
iron oxide
antimony
reduction
weight
tin
Prior art date
Application number
FI802370A
Other languages
English (en)
Finnish (fi)
Other versions
FI802370A (fi
FI70339B (fi
Inventor
Louis James Dizikes
Richard Herman Rodrian
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 FI802370A publication Critical patent/FI802370A/fi
Application granted granted Critical
Publication of FI70339B publication Critical patent/FI70339B/fi
Publication of FI70339C publication Critical patent/FI70339C/fi

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)
  • Magnetic Record Carriers (AREA)
  • Compounds Of Iron (AREA)
  • Paints Or Removers (AREA)
FI802370A 1979-07-30 1980-07-29 Foerfarande foer framstaellning av ett magnetiskt stabilt jaernpulver FI70339C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US6179779 1979-07-30
US06/061,797 US4256484A (en) 1979-07-30 1979-07-30 Metallic iron particles for magnetic recording

Publications (3)

Publication Number Publication Date
FI802370A FI802370A (fi) 1981-01-31
FI70339B FI70339B (fi) 1986-02-28
FI70339C true FI70339C (fi) 1986-09-12

Family

ID=22038209

Family Applications (1)

Application Number Title Priority Date Filing Date
FI802370A FI70339C (fi) 1979-07-30 1980-07-29 Foerfarande foer framstaellning av ett magnetiskt stabilt jaernpulver

Country Status (22)

Country Link
US (1) US4256484A (sv)
JP (1) JPS5623203A (sv)
KR (1) KR830002684B1 (sv)
AU (1) AU522889B2 (sv)
BE (1) BE884529A (sv)
BR (1) BR8004772A (sv)
CA (1) CA1132008A (sv)
CH (1) CH639014A5 (sv)
DD (1) DD153195A5 (sv)
DE (1) DE3028556C2 (sv)
ES (1) ES493819A0 (sv)
FI (1) FI70339C (sv)
FR (1) FR2462222A1 (sv)
IL (1) IL60693A (sv)
IN (1) IN154408B (sv)
IT (1) IT1132024B (sv)
MX (1) MX152979A (sv)
NL (1) NL8004337A (sv)
PH (1) PH15943A (sv)
PT (1) PT71622A (sv)
SE (1) SE454548B (sv)
SU (1) SU1419510A3 (sv)

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
US4826671A (en) * 1986-03-14 1989-05-02 Basf Aktiengesellschaft Preparation of acicular α-Fe2 O3
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 (sv) * 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 (sv) * 1974-09-17 1976-03-23 Fuji Photo Film Co Ltd
JPS5142990A (sv) * 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
AU522889B2 (en) 1982-07-01
SE8004264L (sv) 1981-01-31
KR830003787A (ko) 1983-06-22
FR2462222A1 (fr) 1981-02-13
PH15943A (en) 1983-04-29
IL60693A (en) 1983-02-23
DE3028556A1 (de) 1981-02-12
BR8004772A (pt) 1981-02-10
CH639014A5 (fr) 1983-10-31
DE3028556C2 (de) 1986-04-17
ES8106267A1 (es) 1981-08-01
IT8023788A0 (it) 1980-07-29
AU6087080A (en) 1981-06-18
SU1419510A3 (ru) 1988-08-23
ES493819A0 (es) 1981-08-01
IT1132024B (it) 1986-06-25
PT71622A (en) 1980-08-01
FR2462222B1 (sv) 1984-01-06
JPS5623203A (en) 1981-03-05
FI802370A (fi) 1981-01-31
KR830002684B1 (ko) 1983-12-07
US4256484A (en) 1981-03-17
FI70339B (fi) 1986-02-28
DD153195A5 (de) 1981-12-30
JPH0146561B2 (sv) 1989-10-09
BE884529A (fr) 1981-01-29
MX152979A (es) 1986-07-11
NL8004337A (nl) 1981-02-03
CA1132008A (en) 1982-09-21
IN154408B (sv) 1984-10-27
SE454548B (sv) 1988-05-09

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: PFIZER PIGMENTS INC.