Title:
LUBRICANT COMPOSITION AND ANALYSIS METHOD FOR SAME
Document Type and Number:
WIPO Patent Application WO2002092732
Kind Code:
A3
Abstract:
A lubricant composition is provided, wherein a base oil of the lubricant is a single ester having a chemical structure of (chemical formula 15) where an integer n is any of 7, 8 or 9, wherein at least one antioxidant of hindered phenol-based antioxidants, including at least one (3, 5-di-tert-butyl-4-hydroxyphenyl), and hindered amine based antioxidants is included, wherein a triglyceride represented by the structure of (chemical formula 16) where R1, R2 and R3 are unsaturated or saturated straight chain structures or branched structures formed of CxHyOz is included and wherein the viscosity characteristics are no greater than 48 mPa<.>s at 40 °C.
Inventors:
TOJOU FUMIYO (JP)
MATSUOKA KAORU (JP)
MATSUOKA KAORU (JP)
Application Number:
PCT/JP2002/004679
Publication Date:
August 28, 2003
Filing Date:
May 15, 2002
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
TOJOU FUMIYO (JP)
MATSUOKA KAORU (JP)
TOJOU FUMIYO (JP)
MATSUOKA KAORU (JP)
International Classes:
C10M105/38; C10M169/04; F16C17/10; F16C33/10; G01N33/28; G01N33/30; (IPC1-7): C10M105/38; C10M133/12; C10M169/04; F16C33/10; G01N33/28; G11B25/04
Domestic Patent References:
| WO1997016827A1 | 1997-05-09 |
Foreign References:
| FR2774286A1 | 1999-08-06 | |||
| DE2152666A1 | 1972-04-27 | |||
| EP0913457A2 | 1999-05-06 | |||
| EP0485979A2 | 1992-05-20 | |||
| GB2063909A | 1981-06-10 | |||
| US5973878A | 1999-10-26 |
Other References:
BARNES; FAINMAN: "Synthetic ester lubricants", LUBRICATION ENGINEERING, vol. 13, August 1957 (1957-08-01), pages 454 - 457, XP001098167
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 03 3 April 2002 (2002-04-03)
ABE Y., SHIBAYAMA M.; MATSUO T: "Characterization of lubricant films on magnetic recording disks by ToF-SIMS", SURFACE AND INTERFACE ANALYSIS, vol. 30, no. 1, August 2000 (2000-08-01), pages 632 - 634, XP009001825
MATSUOKA KAORU ET AL: "Development of FDB spindle motors for HDD use", IEEE TRANS MAGN;IEEE TRANSACTIONS ON MAGNETICS MARCH 2001, vol. 37, no. 2 I, March 2001 (2001-03-01), pages 783 - 788, XP002223134
CAMPANA J E ET AL: "ADVANCED MASS SPECTOMETRY OF LUBRICANTS", ASLE TRANSACTIONS, SOCIETY OF TRIBOLOGISTS AND LUBRICATION, US, vol. 29, no. 2, April 1986 (1986-04-01), pages 235 - 245, XP001118816, ISSN: 0569-8197
OHCHI Y ET AL: "The characterization of lubricant on ME tape by TOF-SIMS analysis", JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, vol. 235, no. 1-3, October 2001 (2001-10-01), pages 183 - 186, XP004308561, ISSN: 0304-8853
ZEMAN, A. ET AL: "Mass spectrometric fragmentation of neopentylpolyol esters, part III: Fatty acid diesters of neopentylglycol", FETTE, SEIFEN, ANSTRICHM. (1978), 80(10), 388-92, XP009001823
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 03 30 March 2000 (2000-03-30)
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 15 6 April 2001 (2001-04-06)
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 03 3 April 2002 (2002-04-03)
ABE Y., SHIBAYAMA M.; MATSUO T: "Characterization of lubricant films on magnetic recording disks by ToF-SIMS", SURFACE AND INTERFACE ANALYSIS, vol. 30, no. 1, August 2000 (2000-08-01), pages 632 - 634, XP009001825
MATSUOKA KAORU ET AL: "Development of FDB spindle motors for HDD use", IEEE TRANS MAGN;IEEE TRANSACTIONS ON MAGNETICS MARCH 2001, vol. 37, no. 2 I, March 2001 (2001-03-01), pages 783 - 788, XP002223134
CAMPANA J E ET AL: "ADVANCED MASS SPECTOMETRY OF LUBRICANTS", ASLE TRANSACTIONS, SOCIETY OF TRIBOLOGISTS AND LUBRICATION, US, vol. 29, no. 2, April 1986 (1986-04-01), pages 235 - 245, XP001118816, ISSN: 0569-8197
OHCHI Y ET AL: "The characterization of lubricant on ME tape by TOF-SIMS analysis", JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, vol. 235, no. 1-3, October 2001 (2001-10-01), pages 183 - 186, XP004308561, ISSN: 0304-8853
ZEMAN, A. ET AL: "Mass spectrometric fragmentation of neopentylpolyol esters, part III: Fatty acid diesters of neopentylglycol", FETTE, SEIFEN, ANSTRICHM. (1978), 80(10), 388-92, XP009001823
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 03 30 March 2000 (2000-03-30)
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 15 6 April 2001 (2001-04-06)
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