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    ELECTRODE MATERIAL SUITABLE FOR ELECTROCHEMICAL BATTERY
    2.
    发明专利
    ELECTRODE MATERIAL SUITABLE FOR ELECTROCHEMICAL BATTERY 失效

    公开(公告)号：JPH09219200A

    公开(公告)日：1997-08-19

    申请号：JP28816096

    申请日：1996-10-30

    Applicant: BASF MAGNETICS GMBH

    Inventor： HAARARUTO KERAA ,  BERUNTO BURONSUTERUTO ,  HERUMUUTO SHIYUTAININGAA ,  GIYUNTAA HAIRU ,  RAINAA BURUMU

    IPC: H01M4/02 ,  H01M4/48 ,  H01M4/52 ,  H01M4/58 ,  H01M4/62 ,  H01M10/40

    Abstract: PROBLEM TO BE SOLVED: To reduce the cost and battery resistance, by containing a polymer binder composed of a monomer containing no fluorine, and a solid capable of reversibly catching or releasing a lithium ion in electrochemical reaction. SOLUTION: A graphite of 90g is stirringly added into the solution of a polyacrylic resin A of 1.84g in a tetrahydropyran of 75.13g, in a the tetrahydropyran of 75.13g, to perform stirring for 10 minutes. The resin A is copolymer composed of a 2-ethylhexyl acrylate of 95wt.%, and a monobutyl maleylate of 2wt.%, and is containing a cross linking agent of 2.5wt.%. The stirred dispersion liquid is moreover stirred for two hours by a roller stand, and then is applied a thin copper plate with a knife coater, to be dried and a resultant layer is dried at room temperature for 10 minutes, and moreover at 100 deg.C for 10 minutes. This can obtain an electrode capable of showing an excellent mechanical characteristic and also an excellent electrochemical characteristic to a lithium metallic plate, and reducing battery resistance, showing an excellent mechanical, at a low cost.

    MAGNETIC RECORDING MEDIUM
    3.
    发明专利
    MAGNETIC RECORDING MEDIUM 失效

    公开(公告)号：JPH0676275A

    公开(公告)日：1994-03-18

    申请号：JP14930093

    申请日：1993-06-21

    Applicant: BASF MAGNETICS GMBH

    Inventor： URURITSUHI IEEGAA ,  MIHIYAERU BOBURITSUHI ,  HERUMUUTO KOPUKE ,  RAINAA EDAA ,  HANSUUPEETAA SHIRUTOBERUKU ,  KURAUSU DEIITAA SHIYOOMAN ,  HAARARUTO KERAA

    IPC: C09D5/23 ,  C09D175/00 ,  C09D175/04 ,  G11B5/64 ,  G11B5/72

    Abstract: PURPOSE: To improve wear resistance and corrosion resistance by forming a protective layer comprising a specified polyurethane having specified mol.wt. obtd. by specified reaction on a ferromagnetic metal layer. CONSTITUTION: A protective layer formed on a metal layer consists of a polyurethane having 500 to 10000 average mol.wt. This polyurethane is obtd. by the following reaction. An isocyanate expressed by formula Q-(NCO)z is made to react with a compd. expressed by formula Rf -A-B and/or a compd. expressed by formula X-RH-B. In formulae, Q is an alkyl, cycloalkyl or heterocycloalkyl group, (z) is an integer 1 to 5, Rf is a perfluoro (cyclo) alkyl or perfluoroalkyl aryl group having 3 to 30 carbon atoms, A is -(CH2 )n -, wherein(n)= 1 to 10, B is -OH, =NK, -NH2 or -(COOH), RH is an alkyl or cycloalkyl group having 1 to 30 carbon atoms, and X is -H, -OH, =NH, -NH2 , -SO3 H or -SO3 Na.

    MAGNETIC RECORDING MEDIUM
    4.
    发明专利
    MAGNETIC RECORDING MEDIUM 失效

    公开(公告)号：JPH06295430A

    公开(公告)日：1994-10-21

    申请号：JP161594

    申请日：1994-01-12

    Applicant: BASF MAGNETICS GMBH

    Inventor： HAARARUTO KERAA ,  URURIHI IEEGAA ,  HERUMUUTO SHIYUTAININGAA ,  HERUMUUTO KOPUKE ,  KURAUSU DEIITAA SHIYOOMAN ,  HANSUUPEETAA SHIRUTOBERUKU

    IPC: C09D5/00 ,  C10M105/54 ,  C10M105/72 ,  C10N40/18 ,  G11B5/64 ,  G11B5/72 ,  G11B5/725

    Abstract: PURPOSE: To obtain a magnetic recording medium having a ferromagnetic metal layer on a nonmagnetic substrate and having a protective layer thereon which shows excellent durability against repeated use by constituting the protective layer of a component expressed by specified formula. CONSTITUTION: This magnetic recording medium consists of a nonmagnetic substrate, at least one ferromagnetic metal layer on the substrate and a protective layer on the metal layer. This protective layer is formed of a compsn. expressed by formula Z-(CF2 )m -(CH2 )n -X-Y-(CH2 )n -(CF2 )m -Z. In formula, X is -S- or -CHOH, Y is -S- or -C=O, Z is -CH3 , -CF3 or -CH=CH2 , n is an integer 2 to 17, and m is an integer 0 to 7. Thereby, the obtd. magnetic recording medium has excellent surface mechanical characteristics showing special durability even when it is repeatedly used, and the medium is extremely stable against corrosion of the metal thin film by air of humidity in air. Therefore, a recording medium having excellent wear resistance and corrosion resistance can be obtd.

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