公开(公告)号：JP2003073336A

公开(公告)日：2003-03-12

申请号：JP2001266323

申请日：2001-09-03

Applicant: Sony Corp ,  ソニー株式会社

Inventor： KURIHARA KENICHI ,  KISHII NORIYUKI ,  KAMEI TAKAHIRO ,  KOBAYASHI TAKESHI ,  IWAMOTO HIROSHI ,  TSUBOI HISANORI

IPC: C07C69/34 ,  C10M105/40 ,  C10N30/00 ,  C10N30/06 ,  C10N40/18 ,  G11B5/725

Abstract: PROBLEM TO BE SOLVED: To provide a lubricant which holds excellent lubricity under various kinds of use conditions, retains the lubricating effect over a long time, and is useful for recording media having excellent traveling properties, excellent abrasion resistance, excellent durability, and the like. SOLUTION: A hydrocarbon compound represented by the general formula (1): R CH(COOR )CH2 COO-X-COOH (1) (R and R are each a 6 to 30C saturated or unsaturated aliphatic hydrocarbon group; X is a hydrocarbon group or an aromatic ring or, an aromatic ring substituted with one or more hydrocarbon groups, one or more aromatic rings, or the like, or a hydrocarbon group substituted with one or more aromatic rings), such as C18 H37 -CH(COOC18 H37 ) CH2 COOCH(C11 H23 )CH2 COOH. The compound is used as a lubricant for magnetic recording media.

Abstract translation: 要解决的问题：为了提供在各种使用条件下保持优异的润滑性的润滑剂，长时间保持润滑效果，并且可用于具有优异的行驶性能，优异的耐磨性，优异的耐久性等的记录介质 。 解决方案：由通式（1）表示的烃化合物：R 1 CH（COOR 2）CH 2 COO-X-COOH（1）（R 1和R 2）各自为6〜30℃ 饱和或不饱和脂族烃基; X为烃基或芳环，或被一个或多个烃基取代的芳环，一个或多个芳环等，或被一个或多个芳环取代的烃基 ），例如C 18 H 37 -CH（COOC 18 H 37）CH 2 COOCH（C 11 H 23）CH 2 COOH。 该化合物用作磁记录介质的润滑剂。

公开(公告)号：JP2003064028A

公开(公告)日：2003-03-05

申请号：JP2001254993

申请日：2001-08-24

Applicant: Sony Corp ,  ソニー株式会社

Inventor： KURIHARA KENICHI ,  KISHII NORIYUKI ,  KAMEI TAKAHIRO ,  KOBAYASHI TAKESHI ,  IWAMOTO HIROSHI ,  TSUBOI HISANORI

IPC: C07C69/003 ,  C07C69/34 ,  C10M105/40 ,  C10N30/00 ,  C10N30/06 ,  C10N40/18 ,  G11B5/725

Abstract: PROBLEM TO BE SOLVED: To provide a lubricant for a recording medium holding excellent lubricity under various working conditions, and keeping lubrication effect, and having excellent trafficability, abrasion resistance, durability and the like for a long time.
SOLUTION: For example, C
18 H
37 -CH(COOH)CH
2 COOC
18 H
37 is used as a lubricant for a magnetic recording medium.
COPYRIGHT: (C)2003,JPO

Abstract translation: 要解决的问题：提供一种在各种工作条件下保持优异润滑性的记录介质的润滑剂，并且保持润滑效果，并且具有优异的交通性，耐磨性，耐久性等等。 解决方案：例如，使用C18 H37 -CH（COOH）CH2 COOC18 H37作为磁记录介质的润滑剂。

公开(公告)号：JP2002363137A

公开(公告)日：2002-12-18

申请号：JP2001172994

申请日：2001-06-07

Applicant: SONY CORP

Inventor： KOBAYASHI TAKESHI ,  KISHII NORIYUKI ,  KAMEI TAKAHIRO ,  KURIHARA KENICHI ,  IWAMOTO HIROSHI ,  TSUBOI HISANORI

IPC: C07D213/64 ,  C07C69/63 ,  C07C219/34 ,  C08G65/332 ,  C10M105/54 ,  C10M105/64 ,  C10M105/70 ,  C10M107/38 ,  C10M107/44 ,  C10N30/00 ,  C10N30/06 ,  C10N40/18 ,  G11B5/725

Abstract: PROBLEM TO BE SOLVED: To provide a lubricant for recording media keeping high lubricity under various service conditions, sustaining lubricant effect for a long period of time and affording good transferability, abrasion resistance, durability, etc. SOLUTION: This lubricant to be used for magnetic recording media comprises e.g. a compound of the formula: C18 H37 CH(CH2 COOC10 H6 OH)COO-Rf- OCOCH(CH2 COOC10 H6 OH)C18 H37 (Rf is a fluoropolyether group with an average molecular weight of 2,000).

公开(公告)号：JP2002269733A

公开(公告)日：2002-09-20

申请号：JP2001064806

申请日：2001-03-08

Applicant: SONY CORP

Inventor： TSUBOI HISANORI ,  KISHII NORIYUKI ,  KAMEI TAKAHIRO ,  KURIHARA KENICHI ,  KOBAYASHI TAKESHI ,  IWAMOTO HIROSHI

IPC: C10M107/38 ,  C10M107/44 ,  C10N40/18 ,  G11B5/84

Abstract: PROBLEM TO BE SOLVED: To more easily determine the optimum quantity of a lubricant contained in a recording medium. SOLUTION: Relation shown by straight lines A and B is formed between the logarithmic value of the time (sec) after a magnetic recording medium is immersed in a solvent until the lubricant is extracted by 40% and the corresponding lubricant content range where the optimum lubricating effect of the magnetic recording medium can be obtained. The optimum content between the straight lines A and B can be estimated from the lines by evaluating the time (sec) until the lubricant to be contained in the magnetic recording medium is extracted by 40%.

公开(公告)号：JP2002175618A

公开(公告)日：2002-06-21

申请号：JP2000372090

申请日：2000-12-06

Applicant: SONY CORP

Inventor： KAMEI TAKAHIRO ,  KISHII NORIYUKI ,  KURIHARA KENICHI ,  KOBAYASHI TAKESHI ,  IWAMOTO HIROSHI ,  TSUBOI HISANORI

IPC: C10M107/38 ,  C10M129/06 ,  C10M129/08 ,  C10M129/10 ,  C10M129/12 ,  C10M129/40 ,  C10M129/42 ,  C10M129/44 ,  C10M129/72 ,  C10M129/76 ,  C10M131/10 ,  C10M131/12 ,  C10M133/06 ,  C10M133/08 ,  C10M169/04 ,  C10N20/00 ,  C10N30/00 ,  C10N30/06 ,  C10N40/18 ,  G11B5/725

Abstract: PROBLEM TO BE SOLVED: To provide a magnetic recording medium having excellent running properties, wear resistance and durability, wherein excellent lubricating properties is maintained. SOLUTION: In the magnetic recording medium 1 provided with a non- magnetic substrate 2, a magnetic layer 3 formed on one principal surface of the non-magnetic substrate 2, a carbon protective film 4 formed on the magnetic layer 3 and a lubricant layer 5 formed on the carbon protective film 4 and containing a lubricant, the lubricant layer 5 contains a compound having >=15% and =5% and

公开(公告)号：JP2001291227A

公开(公告)日：2001-10-19

申请号：JP2000101359

申请日：2000-03-31

Applicant: SONY CORP

Inventor： IWAMOTO HIROSHI ,  KISHII NORIYUKI ,  KAMEI TAKAHIRO ,  KURIHARA KENICHI ,  KOBAYASHI TAKESHI ,  TSUBOI HISANORI

IPC: G11B5/72

Abstract: PROBLEM TO BE SOLVED: To provide a recording/reproducing device of low floating amount using a magnetic hard disk(HD), having less decline in the output owing to spacing loss and less increase in the error rate by providing a stuck material prevention method for surely restraining generation of the stuck material. SOLUTION: This magnetic disk device is constituted so that the magnetic hard disk is used as a storage medium and the floating amount of a magnetic head to the magnetic hard disk is 20 nm or smaller when information is recorded/reproduced. The magnetic hard disk has a sticking prevention layer containing diketone compound on the surface thereof.

公开(公告)号：JP2001229529A

公开(公告)日：2001-08-24

申请号：JP2000036855

申请日：2000-02-15

Applicant: SONY CORP

Inventor： NAGAOKA NOBUYUKI ,  HOSHI KAZUO ,  KISHII NORIYUKI ,  KAMEI TAKAHIRO ,  KURIHARA KENICHI ,  KOBAYASHI TAKESHI

IPC: C10M105/12 ,  C10M105/18 ,  C10M105/24 ,  C10M105/34 ,  C10M105/38 ,  C10M105/74 ,  C10M107/02 ,  C10M107/34 ,  C10M107/38 ,  C10N40/18 ,  G11B5/84

Abstract: PROBLEM TO BE SOLVED: To carry out accurate, easy and rapid quantitative analysis of a surface lubricant on the surface of a magnetic recording medium. SOLUTION: The lubricant 105 on the surface of a magnetic recording medium 100 is quantitatively analyzed. Then the lubricant 105 is removed from the surface of the magnetic recording medium after the quantitative analysis of the lubricant so as to prepare a reference sample. The surface of the reference sample is quantitatively analyzed. Both analyses are compared to each other to determine the quantity of the lubricant on the surface of the magnetic recording medium 100.

公开(公告)号：JP2000076639A

公开(公告)日：2000-03-14

申请号：JP24640998

申请日：1998-08-31

Applicant: Sony Corp ,  ソニー株式会社

Inventor： KURIHARA KENICHI ,  KISHII NORIYUKI ,  KAMEI TAKAHIRO ,  KOBAYASHI TAKESHI ,  IWAMOTO HIROSHI ,  MATSUZAWA NOBUYUKI ,  OKAZAKI YUTAKA

IPC: C09D5/23 ,  G11B5/41 ,  G11B5/708 ,  G11B5/738

Abstract: PROBLEM TO BE SOLVED: To provide a magnetic recording and reproducing device which surely suppresses the occurrence of seizing material.
SOLUTION: In this sliding type magnetic recording and reproducing device using a flexible magnetic disk as a recording medium, a flexible magnetic disk or a cleaning disk holding a seizing inhibitor on its surface is used. The seizing inhibitor contains a compound having a pyridine skeleton and two or more coordination positions. The compound having the pyridine skeleton and two or more coordination positions has excellent complex-forming property with metal atoms so that metal oxides produced on the surface of the head 3 are converted into complex salts, which easily drop from the surface of the head 3 and do not remain on the head surface.
COPYRIGHT: (C)2000,JPO

Abstract translation: 要解决的问题：提供一种可靠地抑制卡住材料的发生的磁记录和再现装置。 解决方案：在使用柔性磁盘作为记录介质的滑动型磁记录和再现装置中，使用在其表面上保持防结块剂的柔性磁盘或清洁盘。 卡滞抑制剂含有具有吡啶骨架和两个或更多个配位位置的化合物。 具有吡啶骨架和两个或更多个配位位置的化合物与金属原子具有优异的络合物形成性质，使得在头部3的表面上产生的金属氧化物转化成复合盐，其容易从头部3的表面下降， 不要留在头部表面。

公开(公告)号：JPH1139644A

公开(公告)日：1999-02-12

申请号：JP19284297

申请日：1997-07-17

Applicant: SONY CORP

Inventor： KISHII NORIYUKI ,  KAMEI TAKAHIRO ,  KURIHARA KENICHI ,  KOBAYASHI TAKESHI ,  IWAMOTO HIROSHI ,  MATSUZAWA NOBUYUKI

IPC: C09K19/06 ,  C09K19/32 ,  C09K19/34 ,  C10M105/56 ,  C10M105/70 ,  C10N40/18 ,  C10N50/10 ,  G11B5/64 ,  G11B5/71 ,  G11B5/72 ,  G11B5/725 ,  G11B5/735 ,  G11B5/738

Abstract: PROBLEM TO BE SOLVED: To provide a recording medium excellent in continuous sliding durability, low in tackiness and high in meniscus force by incorporating liquid crystal molecules having a specified bicyclic structure as a lubricant into the outermost layer. SOLUTION: The outermost layer of a magnetic recording medium having magnetic layers on a nonmagnetic supporting body contains liquid crystal molecules having a bicyclic structure expressed by general formula of L-X-Y or L-X-Y -R. In the formulae, X, Y , Y are atomic groups having cyclic structures, L, R are cyano groups, nitro groups, aldehyde groups, hydroxyl groups, amino groups, amide groups, ether groups, carbonyl groups, carboxyl groups, oxycarboxyl groups, halogen groups, alkyl groups, allyl groups, hydroxyimino groups, or allyl groups, alkyl groups, oxycarboxyl groups, carboxyl groups, carbonyl groups, ether groups, amide groups and amino groups with substitution of groups above described.

公开(公告)号：JPH10241153A

公开(公告)日：1998-09-11

申请号：JP4447097

申请日：1997-02-27

Applicant: SONY CORP

Inventor： KURIHARA KENICHI ,  KISHII NORIYUKI ,  SASAKI YUICHI

IPC: C09D5/23 ,  G11B5/702 ,  G11B5/708

Abstract: PROBLEM TO BE SOLVED: To improve dispersion characteristic of magnetic powder and realize excellent electro-magnetic conversion characteristic and running durability by containing the class 4 ammonium salt of polarity group into the binder of magnetic layer mainly composed of binder and magnetic powder and adding the diketone compound to the magnetic surface processing agent. SOLUTION: A magnetic layer is formed, on a non-magnetic carrier, by coating of a magnetic paint mainly composed of binder and magnetic powder in the specific surface area of 35m /g or more. The binder includes class 4 ammonium salt of polarity group, metal and diketone compound having the complex forming function as the powder surface processing agent. The diketone is expressed by the formula I, any one of R1 to R3 has carboxyl group, others are selected from H, halogen and alkyl group, aryl group, complex aromatic group replaced with these H and halogen and amount of additive is set to 1.0 to 5.9 part by weight in order to improve powder dispersion characteristic through absorption to the magnetic powder surface. Moreover, the class 4 ammonium salt is expressed by the formula II or III and amount of contents is set to 0.001 to 1mmol/g to reserve the mutual effect between interfaces of the binder and surface processing agent.