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公开(公告)号：JPH0344382B2
公开(公告)日：1991-07-05
申请号：JP15512583
申请日：1983-08-26
Applicant: BASF AG
Inventor： ARUBERUTO KOORU , NORUBERUTO SHUNAIDAA , GUREEGORU REI , UERUNAA BARUTSU , MIRENA MERUTSUAA , HERUMUUTO YAKUSHU
IPC: G11B5/702 , C09D5/23 , C09D175/00 , C09D175/04 , G11B5/70 , G11B5/84 , G11B5/842
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公开(公告)号：JPH02292725A
公开(公告)日：1990-12-04
申请号：JP9418190
申请日：1990-04-11
Applicant: BASF AG
Inventor： HORUSUTO PURATSUTSU , PEETAA ENGERUHARUTO , FURIIDORITSUHI ZOMAAMAN , ARUBERUTO KOORU , YURUGEN KURAUSUMAN , RAINHORUTO BAURU , PEETAA HAIRUMAN , HERUMAN RORAA
Abstract: PURPOSE: To improve the recording properties of a magnetic recording medium by producing a dispersion in a mixing and pulverizing machine filled with pulverizing balls having a specific diameter and density. CONSTITUTION: The dispersion is produced in the mixing and pulverizing machine filled with the pulverizing balls having a diameter of 0.2 to 3.0mm and a density of 3.6 to 3.9g/cm . The dispersion is post-treated in a ball mill including pulverizing balls having a diameter larger than 2.0mm and a density larger than 4.2g/cm . The dispersion is so produced that the viscosity of the resulted dispersion, measured at 25 deg.C is at least 50mPas and that the added particulate magnetic material has at least 14m /g as the surface layer measured by a BET method. Consequently, the stable dispersion is produced without increasing a dispersant ratio and/or stabilizer ratio by using the known effective dispersion assembly. As a result, the magnetic properties are intrinsically improved and the recording properties of the resulted magnetic recording medium are improved.
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公开(公告)号：JPH03152116A
公开(公告)日：1991-06-28
申请号：JP22851890
申请日：1990-08-31
Applicant: BASF AG
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公开(公告)号：JPS6199928A
公开(公告)日：1986-05-19
申请号：JP22202085
申请日：1985-10-07
Applicant: Basf Ag
Inventor： ARUBERUTO KOORU , MIRENA MERUTSUAA , AUGUSUTO REENAA , NORUBERUTO SHIYUNAIDAA , EEBAAHARUTO KESUTAA , BUERUNAA BARUTSU , FURIIDORIHI ZOMAAMAN , ERUNSUTO RIKAA
IPC: G11B5/702 , C09D5/23 , C09D127/04 , C09D127/06 , C09D163/00 , C09D167/00 , C09D171/00 , C09D171/12 , C09D175/00 , C09D175/04 , C10M105/58 , C10N40/18 , G11B5/708 , G11B5/71
CPC classification number: G11B5/71 , Y10S428/90 , Y10T428/31504 , Y10T428/31935
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公开(公告)号：JPS6182332A
公开(公告)日：1986-04-25
申请号：JP16218985
申请日：1985-07-24
Applicant: Basf Ag
Inventor： AUGUSUTO REENAA , BUERUNAA BARUTSU , BUERUNAA RENTSU , ARUBERUTO KOORU , GIYUNTAA HAIRU
IPC: C09D5/23 , C09D175/04 , C09D175/06 , C09D175/08 , C09D175/14 , G11B5/702 , G11B5/842
CPC classification number: G11B5/702
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Patent Agency Ranking
公开(公告)号：JPS60160024A
公开(公告)日：1985-08-21
申请号：JP27354884
申请日：1984-12-26
Applicant: BASF AG
Inventor： AUGUSUTO REENAA , ARUBERUTO KOORU , BUERUNAA BARUTSU , FURIIDORIHI ZOMAAMAN , MIRAN FUERIKU , BUERUNAA GURAU , RAINHORUTO BAURU
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公开(公告)号：JPH0628103B2
公开(公告)日：1994-04-13
申请号：JP27354884
申请日：1984-12-26
Applicant: BASF AG
Inventor： AUGUSUTO REENAA , ARUBERUTO KOORU , UERUNAA BARUTSU , FURIIDORIHI ZOMAAMAN , MIRAN FUERIKU , UERUNAA GURAU , RAINHORUTO BAURU
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公开(公告)号：JPS5972647A
公开(公告)日：1984-04-24
申请号：JP15512583
申请日：1983-08-26
Applicant: Basf Ag
Inventor： ARUBERUTO KOORU , NORUBERUTO SHIYUNAIDAA , GUREEGORU REI , BUERUNAA BARUTSU , MIRENA MERUTSUAA , HERUMUUTO YAKUSHIYU
IPC: G11B5/702 , C09D5/23 , C09D175/00 , C09D175/04 , G11B5/70 , G11B5/842
CPC classification number: G11B5/7013
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公开(公告)号：JPH0628104B2
公开(公告)日：1994-04-13
申请号：JP27354984
申请日：1984-12-26
Applicant: BASF AG
Inventor： AUGUSUTO REENAA , ARUBERUTO KOORU , HERUMAN RORAA , UERUNAA BARUTSU , EEBAAHARUTO KESUTAA , FURIIDORIHI ZOMAAMAN
IPC: C09D5/23 , C09D7/12 , C10M105/24 , C10M105/68 , C10N10/04 , C10N40/18 , G11B5/71
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公开(公告)号：JPS63228413A
公开(公告)日：1988-09-22
申请号：JP4994288
申请日：1988-03-04
Applicant: BASF AG
Inventor： AUGUSUTO REENAA , ARUBERUTO KOORU , MIHIYAERU BOBURITSUHI , HERUMAN RORAA , PEETAA RIHITAA , BUERUNAA RENTSU , RUUTOBUIHI KURAITONAA , PEETAA RUDORUFU
IPC: C08G18/12 , C09D5/23 , C09D175/00 , C09D175/04 , G11B5/702
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