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    Production of Magnetic Recording Media
    21.
    发明专利
    Production of Magnetic Recording Media 未知

    公开(公告)号：GB1150947A

    公开(公告)日：1969-05-07

    申请号：GB4098466

    申请日：1966-09-14

    Applicant: BASF AG

    Inventor： WILHELM HANS ,  BECHT GUENTER ,  HENKLER HERBERT ,  SCHNELL GEORG ,  HARTMANN JOB-WERNER

    IPC: C09D5/23 ,  G11B5/702

    Abstract: 1,150,947. Magnetic compositions. BADISCHE ANILIN- & SODA-FABRIK A.G. 14 Sept., 1966 [15 Sept., 1965], No. 40984/66. Heading H1H. In the production of magnetic recording media by applying a suspension of ferromagnetic powder in a solution of a binder on to a backing, the binder comprises a mixture of a polyamide and a monomer having at least two double bonds, which is polymerized in situ by irradiation, heat, or ozone. The monomer is preferably acrylic, and may be N,N 1 -methylene, ethylene, trimethylene, hexamethylene, or p,p-diaminocyclohexylmethane, -bis-acrylamide or -methacrylamide; or an acrylate or methacrylate of glycol, propylene glycol, butanediol, pentanediol, hexanediol, glycerol, trimethylol propane, pentaerythritol, or cyclic polyols. Suitable polyamides, solvents, initiators, plasticizers, and bases are listed. Polymerization may be effected (before, during, or after drying) with I.R., visible, or U.V. radiation, heated rollers, dryers, α, #, or γ rays, passage of O 3 produced by electric discharge. Monomers having one double bond may also be incorporated with the binder. The wt. ratio of powder: binder may be 2: 1 to 6: 1, and the powder may be Fe 3 O 4 , acicular γ- Fe 2 O 3 , or Fe.

    Production of organic coatings on metal articles by electrochemical deposition
    22.
    发明专利
    Production of organic coatings on metal articles by electrochemical deposition 未知

    公开(公告)号：GB1146858A

    公开(公告)日：1969-03-26

    申请号：GB3071166

    申请日：1966-07-08

    Applicant: BASF AG

    Inventor： FLORUS GERHARD ,  MARX MATTHIAS ,  HARTMANN JOB-WERNER ,  WILHELM HANS

    IPC: C09D5/44 ,  C09D133/06

    Abstract: 1,146,858. Electrochemical coating compositions. BADISCHE ANILIN & SODAFABRIK A.G. 8 July, 1966 [9 July, 1965], No. 30711/66. Headings C3P and C3R. [Also in Division C7] An example illustrates compositions which are suitable for electrodeposition coating and which comprise a butanol solution of (a) a copolymer of 2-ethyl hexyl acrylate, acrylic acid, N - butoxymethylacrylamide, 4 - hydroxybutyl acrylate and styrene, the acid groups being neutralized with N,N-dimethyl-N-(#-hydroxyethyl)-amine and (b) N,N 1 ,N 11 ,N 111 -tetramethyl olglyoxal diureine, the compositions additionally containing titanium dioxide pigment and being diluted with water. Coatings of the compositions are stoved at 150‹ C.

    Production of copolymers suitable as binders in coating compositions, as impregnants and as adhesives
    23.
    发明专利
    Production of copolymers suitable as binders in coating compositions, as impregnants and as adhesives 未知

    公开(公告)号：GB1137925A

    公开(公告)日：1968-12-27

    申请号：GB1550166

    申请日：1966-04-07

    Applicant: BASF AG

    Inventor： WILHELM HANS ,  MARX MATTHIAS ,  BRUNNMUELLER FRIEDRICH ,  ALLWINN ROLAND ,  VLACHOS ACHILLES ,  SANDER HANS ,  HARTMANN JOB-WERNER ,  BACHMANN RUDOLF

    IPC: C08F20/58 ,  C08F20/62 ,  C08F22/00

    Abstract: 1,137,925. Copolymers of etherified methylol- (meth)-acrylamide. BADISCHE ANILIN- & SODA-FABRIK A.G. 7 April, 1966 [10 April, 1965; 26 May, 1965], No. 15501/66. Heading C3P. In a multi-stage process for preparing derivatives of amide copolymers (A) 0À9-1À2 moles of (meth)-acrylamide, 0À9-1À2 moles of paraformaldehyde (calculated as monomer), at least 0À9 moles of an (oxa)-alkanol having up to 8 carbon atoms and 0À001-0À5 moles of a tertiary aliphatic or cycloaliphatic monoamine having up to 12 carbon atoms are reacted at 50-100‹ C.; (B) then at least 101 equivalent per cent, based on said monoamine, of an α,#-ethylenically unsaturated mono- or di-basic carboxylic acid and/or an (oxa)-alkyl half-ester of such a dibasic acid having up to 9 carbon atoms in the (oxa)-alkyl radical is added and the mixture kept at 80-140‹ C.; (C) then any remainder of the said carboxylic acid or half-ester, and an (oxa)-alkyl ester of (meth)-acrylic acid having up to 20 carbon atoms in the (oxa)-alkyl radical and/or an (alkyl)-vinyl benzene having up to 12 carbon atoms and, if desired, other comonomer are added and copolymerization is carried out using an aliphatic or cycloaliphatic azo compound or an organic peroxide having a half-life of 0À1-30 hours at 85-110‹ C. as polymerization initiator. Polymerization is generally effected in an organic solvent which may be an excess of the (oxa)-alkanol used in step (A) or benzene or an alkyl benzene. In step (A) an oxygen-containing atmosphere is used and in step (B) a polymerization inhibitor is desirably included, e.g. phenothiazine, hydroquinone, methylene blue, nitrosophenol or mdinitrobenzene. The initiator used in step (C) may be azodiisobutyronitrile, azodiisobutyramide, azodicyclohexylcarbonitrile, cumene hydroperoxide, dibenzoyl peroxide, dilauroyl peroxide, t - butyl permaleate, t - butyl hydroperoxide, 2,2 - bis - (t - butyl peroxy)- butane or t-butyl perbenzoate; the initiator may be added continuously during polymerization. A regulator, e.g. t-dodecyl mercaptan, may be included in the polymerization reaction. In the examples, the following monomers are used: acrylamide, maleic acid, acrylic acid, styrene, 1,4-butane-diol monoacrylate and also, in some cases, 2-ethyl hexyl acrylate; the (oxa)-alkanol being n-butanol and the amine being N,N - dimethyl - (# - hydroxyethyl)- amine. The polymers obtained in the invention are useful in coating compositions, stoving lacquers, impregnants and adhesives.

    Production of Magnetic Recording Media.
    26.
    发明专利
    Production of Magnetic Recording Media. 未知

    公开(公告)号：GB1153453A

    公开(公告)日：1969-05-29

    申请号：GB4324766

    申请日：1966-09-28

    Applicant: BASF AG

    Inventor： SCHNELL GEORGE ,  HARTMANN JOB-WERNER ,  STEUERWALD MANFRED ,  KITTLER WOFFRAM

    IPC: C09D5/23 ,  G11B5/702

    Abstract: 1,153,453. Magnetic compositions. BADISCHE ANILIN- & SODA FABRIK A.G. 28 Sept., 1966 [29 Sept., 1965], No. 43247/66. Heading H1H. In the production of magnetic recording media by applying a suspension of ferromagnetic powder in a solution of a linear polyamide on to a backing, the applied layer contains 10-150% by weight (referred to the polyamide) of a soluble condensation product of an aliphatic monocarboxylic acid having 4-22 carbon atoms, and an aliphatic hydroxyamine having at least one primary or secondary amino group, a molecular wt. of below 500, and, e.g., 2-18 carbon atoms. The layer is then dried and heated above the softening point of the polyamide, e.g. at 50-110‹ C. Suitable acids are butyric, caproic, caprylic, capric, lauric, tridecanoic, palmitic, stearic, nonadecylic, sorbic, linoleic, oleic, and sperm or linseed oil fatty acid. Suitable hydroxyamines are 3-hydroxypropylamine, 2-aminoethanol, N - methyl - 2 - aminoethanol, N - hydroxyethyl - 2 - aminoethanol, 2 - aminobutanol, 2- amino - 2 - methyl - propanol, 3 - amino - 2 - hydroxy - propanol, diethanolamine monomethylether, N,N 1 - di - 2 - hydroxyethylethylenediamine, N,N 1 - di - 2 - hydroxyethylpropylenediamine. Equimolar amounts may be used. Suitable polyamide-forming materials, solvents, plasticizers, dispersing agents, and backings are listed. 400-650 pts. by wt. of powder, e.g. acicular γ-Fe 2 O 3 , Fe 3 O 4 , or Fe, may be used per 100 pts. polyamide.

    Magnetic recording media
    27.
    发明专利
    Magnetic recording media 未知

    公开(公告)号：GB1147518A

    公开(公告)日：1969-04-02

    申请号：GB3186766

    申请日：1966-07-15

    Applicant: BASF AG

    Inventor： SCHNELL GEORG ,  HARTMANN JOB-WERNER ,  BONITZ ECKHARD

    IPC: C09D5/23 ,  G11B5/702 ,  G11B5/725

    Abstract: 1147518 Magnetic compositions BADISCHE ANILIN- & SODA-FABRIK A G 15 July 1966 [17 July 1965] 31867/66 Index C3R 3 R22 R32 L4H C24 C13X C10 C11 C12 C25 C6X C5B2 C8P L5A L6G L4D C14A C16 L5X A magnetic recording medium comprises a flexible non-magnetic support with a coating thereon containing magnetic particles dispersed in a thermoplastic resinous binder togehter with 0À5-26% (b. w. of the particles) of a compound of formula R n SiX 4-n , where n is 1-3, R is a saturated or unsaturated aliphatic or aromatic hydrocarbon radical, and X is a halogen atom, or alkoxy, hydroxyl, or amine radical. Numerous examples are given where R is Me, Et, Pr, Bu, Ph, naphthyl, vinyl, dodecyl, octadecyl, octyl and mixtures thereof, and X is C1, (OBu), (OEt), (OH) and (NH 2 ). The compound may be added before, during, or after dispersion of the particles. The binder may be P.V.C., cellulose ester, polyurethane, polyamide, or polyester (examples given). The magnetic particles may be acicular γ-Fe 2 O 3 , and a layer 10Á thick may be produced, containing 0À5-5% of the particles.

    Production of coatings on metal articles by electrochemical deposition
    28.
    发明专利
    Production of coatings on metal articles by electrochemical deposition 未知

    公开(公告)号：GB1146742A

    公开(公告)日：1969-03-26

    申请号：GB3054966

    申请日：1966-07-07

    Applicant: BASF AG

    Inventor： FLORUS GERHARD ,  MARX MATTHIAS ,  HARTMANN JOB-WERNER ,  WILHELM HANS

    IPC: C08L61/04 ,  C09D5/44 ,  C09D133/06

    Abstract: 1,146,742. Electrochemical coating composition. BADISCHE ANILIN- & SODA-FABRIK A.G. 7 July, 1966 [8 July, 1965], No. 30549/66. Headings C3P and C3R. [Also in Division C7] An example illustrates a composition which is suitable for electrodeposition coating and which comprises a butanol solution of (a) a copolymer of 2-ethylhexyl acrylate, acrylic acid, N-butoxymethyl acrylamide, 4-hydroxybutyl acrylate and styrene, the acid groups being neutralized with N,N-dimethyl-N-(#-hydroxyethyl)-amine and (b) an acid condensation product of formaldehyde and butyl carbamate, the composition additionally containing titanium dioxide pigment and being diluted with water. Coatings of the composition are stoved at 150‹ C.

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