GB998853A - Mouldable composition for the production of permanent magnets - Google Patents

Mouldable composition for the production of permanent magnets

Info

Publication number
GB998853A
GB998853A GB1698362A GB1698362A GB998853A GB 998853 A GB998853 A GB 998853A GB 1698362 A GB1698362 A GB 1698362A GB 1698362 A GB1698362 A GB 1698362A GB 998853 A GB998853 A GB 998853A
Authority
GB
United Kingdom
Prior art keywords
phenol
composition
specified
permanent magnets
amine
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
Application number
GB1698362A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Landis and Gyr AG
Original Assignee
Landis and Gyr AG
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 Landis and Gyr AG filed Critical Landis and Gyr AG
Publication of GB998853A publication Critical patent/GB998853A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01F1/08—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 pressed, sintered, or bound together
    • H01F1/083—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 pressed, sintered, or bound together in a bonding agent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D53/00—Machines or devices for sawing with strap saw-blades which are effectively endless in use, e.g. for contour cutting
    • B23D53/12—Hand-held or hand-operated sawing devices working with strap saw blades
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
    • C08G59/182—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing using pre-adducts of epoxy compounds with curing agents
    • C08G59/184—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing using pre-adducts of epoxy compounds with curing agents with amines
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins

Abstract

A mouldable composition for the production of permanent magnets having high heat distortion temperatures comprises (I) a finely divided permanently magnetizable material and (II) an epoxy resin-phenolic resin composition, said composition (II) comprising either an unreacted mixture, a partially reacted mixture or a completely reacted mixture of (A) an epoxy resin which is a glycidyl ether of a polyphenol, (B) a permanently fusible phenol-formaldehyde resin and (C) a hydroxy-alkylated aliphatic tertiary amine made by the reaction of an epoxide compound with ammonia or an aliphatic amine, said tertary amine being present in a catalytic amount. Specified magnetic materials are an alloy of cobalt, nickel, aluminium, titanium and iron and ceramics, e.g. sintered mixtures of pluralities of metal oxides. Specified epoxy resins are those derived fro bis-phenol-A and phenol-formaldehyde novolaks. Specified amines are those of the formula <FORM:0998853/C3/1> where R is a hydroxyalkyl group and R1 is an alkyl group, e.g. triethanolamine, N : N : N1 : N1 - tetrakis - (2 - hydroxypropyl) ethylene-diamine and a hydroxyethylated laurylamine. Examples are given.
GB1698362A 1961-05-11 1962-05-03 Mouldable composition for the production of permanent magnets Expired GB998853A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13020661A 1961-05-11 1961-05-11

Publications (1)

Publication Number Publication Date
GB998853A true GB998853A (en) 1965-07-21

Family

ID=22443566

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1698362A Expired GB998853A (en) 1961-05-11 1962-05-03 Mouldable composition for the production of permanent magnets

Country Status (4)

Country Link
AT (1) AT256484B (en)
CH (1) CH437555A (en)
ES (1) ES277209A1 (en)
GB (1) GB998853A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0018949A1 (en) * 1979-05-08 1980-11-12 Ciba-Geigy Ag Curable epoxy resin mixtures and curing accelerators therefore
US4320080A (en) * 1978-03-22 1982-03-16 Robert Bosch Gmbh Method to manufacture soft magnetic pressed bodies
EP0368228A2 (en) * 1988-11-10 1990-05-16 Hoechst Aktiengesellschaft Cationic modified novolaks, method for their preparation and their use

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4320080A (en) * 1978-03-22 1982-03-16 Robert Bosch Gmbh Method to manufacture soft magnetic pressed bodies
EP0018949A1 (en) * 1979-05-08 1980-11-12 Ciba-Geigy Ag Curable epoxy resin mixtures and curing accelerators therefore
US4296231A (en) 1979-05-08 1981-10-20 Ciba-Geigy Corporation Curable epoxide resin mixtures
EP0368228A2 (en) * 1988-11-10 1990-05-16 Hoechst Aktiengesellschaft Cationic modified novolaks, method for their preparation and their use
EP0368228A3 (en) * 1988-11-10 1991-12-11 Hoechst Aktiengesellschaft Cationic modified novolaks, method for their preparation and their use

Also Published As

Publication number Publication date
CH549162A4 (en) 1967-11-30
ES277209A1 (en) 1963-01-01
AT256484B (en) 1967-08-25
CH437555A (en) 1967-11-30

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