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公开(公告)号:DE1006151B
公开(公告)日:1957-04-11
申请号:DEB0035753
申请日:1955-05-14
Applicant: BASF AG
Inventor: FIKENTSCHER DR HANS , WILHELM DR HANS , WIRTH DR HEINRICH , DACHS DR KARL
IPC: C08F6/06
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公开(公告)号:DE956890C
公开(公告)日:1957-01-24
申请号:DEB0030456
申请日:1954-04-04
Applicant: BASF AG
Inventor: FIKENTSCHER DR HANS , WILHELM DR HANS
IPC: C08F8/00
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公开(公告)号:DE1634019A1
公开(公告)日:1971-01-28
申请号:DE1634019
申请日:1967-06-20
Applicant: BASF AG
Inventor: HENKLER DR HERBERT , ECKELL DR ALBRECHT , WILHELM DR HANS
IPC: C02F1/68
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公开(公告)号:DE1907957A1
公开(公告)日:1970-08-20
申请号:DE1907957
申请日:1969-02-18
Applicant: BASF AG
Inventor: HARTMANN DR HEINRICH , HARTMANN DR JOB-WERNER , WILHELM DR HANS , SCHNELL DR GEORG , KITTLER DR WOLFRAM , WERST DR GERHARD , BAUR DR REINHOLD
Abstract: 1290834 Magnetic recording media BADISCHE ANILIN- & SODA-FABRIK AG 17 Feb 1970 [18 Feb 1969] 7488/70 Heading H1H In magnetic recording media comprising a non-magnetic support, e.g. tape or disc, bearing a dried or cured layer of magnetic particles dispersed in a binder, comprising a mixture of (A) a polyisocyanate (B) a OH-group-containing copolymer and (C) an organic solvent non- reactive to isocyanate groups, the polymer B is made by polymerizing, in an organic solvent, (1) 7-25 wt. per cent of an acrylic or methacrylic monoester of a C 2 -C 8 dihydric aliphatic alcohol; (2) 25-83 wt. per cent of an acrylic or methacrylic ester of a C 1 -C 8 monohydric aliphatic alcohol; (3) 10-50 wt. per cent vinylidene chloride. Up to 25 wt. per cent of further monoolefinically unsaturated monomers may be used in making the copolymer, provided that not more than 3À5% of these monomers, based on the total weight of monomers, contains groups reactive to isocyanate. The binder may be modified by addition of another copolymer of olefinically-unsaturated monomers in an amount less than B. Specified magnetic particles, are acicular or cubic γ-Fe 2 O 3 (0À1-2 Á), Fe, Co, alloys of Fe, Co, and/or Ni, chromium oxide and mixtures of iron oxides with or without other metal oxides. The proportion of magnetic particles to binder is suitably 2À4-4À5 : 1. In making the recording media, the coated and dried support may be pressed between rollers at 20-80‹ C., and tempered at 60-80‹ C. for 1-3 days. In examples, the magnetic particles are γ-Fe 2 O 3 and the binder components A and B are: (1) and (4) A-4,4 1 -diisocyanato-diphenyl methane; B - 1,4 - butanediol monoacrylate/n - butyl acrylate / acrylic acid / vinylidene chloride copolymer; (2) A-4,4 1 -diisocyanatodicyclohexylmethane; B- as (1); (3) A-4,4 1 -diisocyanato - diphenylmethane; B - 1,4 - butanediol monoacrylate / n - butyl acrylate / acrylonitrile/ vinylidene chloride copolymer. Binder (1) also contains vinyl chloride / acetate / alcohol copolymer, and binder (3) also contains vinyl chloride / diethyl maleate / dimethyl maleate copolymer.
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公开(公告)号:DE1568221A1
公开(公告)日:1970-03-05
申请号:DE1568221
申请日:1966-12-17
Applicant: BASF AG
Inventor: WILHELM DR HANS , ECKELL DR ALBRECHT , GULBINS DR KLAUS
IPC: C07C233/16
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公开(公告)号:DE1281079B
公开(公告)日:1968-10-24
申请号:DEB0078412
申请日:1964-09-05
Applicant: BASF AG
Inventor: GULBINS DR KLAUS , LANGE DR GUENTER , SCHUBERT DR RUDOLF , WILHELM DR HANS , WUERTELE DR LOTHAR
IPC: C09G1/10
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公开(公告)号:DE1277801B
公开(公告)日:1968-09-19
申请号:DEB0077540
申请日:1964-07-04
Applicant: BASF AG
Inventor: MARX DR MATTHIAS , WILHELM DR HANS , WOLF DR HANS , TULO HERBERT
IPC: C08F20/56 , D06M14/00 , D06M15/285
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公开(公告)号:DE1273195B
公开(公告)日:1968-07-18
申请号:DEB0068194
申请日:1962-07-26
Applicant: BASF AG
Inventor: BECHT DR GUENTER , FISCHER DR-ING HERMANN , WILHELM DR HANS
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公开(公告)号:DE1264655B
公开(公告)日:1968-03-28
申请号:DEB0085093
申请日:1965-12-22
Applicant: BASF AG
Inventor: MARX DR MATTHIAS , WILHELM DR HANS , LOUIS DR GERD , HARTMANN DR HEINRICH
IPC: C08F18/12 , C09D133/06 , C09J133/06
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公开(公告)号:DE1264651B
公开(公告)日:1968-03-28
申请号:DEB0078365
申请日:1964-09-03
Applicant: BASF AG
Inventor: GULBINS DR KLAUS , LANGE DR GUENTER , WILHELM DR HANS
IPC: C09D11/18
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