Lubricant for magnetic recording medium and use thereof

Details Lubricant for magnetic recording medium and use thereof Lubricant for magnetic recording medium and use thereof

2007-03-27

2007-03-27

Bernatz, Kevin M. (Department: 1773)

Stock material or miscellaneous articles

Magnetic recording component or stock

Thin film media

C428S841200, C428S841300, C508S221000, C585S020000, C585S023000

Reexamination Certificate

active

09971193

ABSTRACT:
A magnetic recording medium and method for forming the magnetic recording medium are described. The magnetic recording medium includes a magnetic layer formed on a non-magnetic support, and a lubricant layer over the magnetic layer. The lubricant layer includes a compound selected from hydrocarbyl-substituted cyclopentanes, hydrocarbyl-substituted cyclopentenes, hydrocarbyl-substituted cyclopentadienes, and mixtures or derivatives thereof and, optionally, one or more additives. The lubricant layer also may be used on a magnetic head for reading and writing information on a magnetic recording medium. The magnetic recording medium and the magnetic head may be used to manufacture computer disk drives, compact disk drives, audio equipment, and video equipment.

REFERENCES:
patent: 4077992 (1978-03-01), Fusco
patent: 4163729 (1979-08-01), Adams
patent: 4566983 (1986-01-01), Hayashi
patent: 4693799 (1987-09-01), Yanagihara
patent: 4721823 (1988-01-01), Venier et al.
patent: 4758471 (1988-07-01), Arioka et al.
patent: 4849566 (1989-07-01), Venier et al.
patent: 4863622 (1989-09-01), Chiu
patent: 4929782 (1990-05-01), Venier et al.
patent: 5012022 (1991-04-01), Venier et al.
patent: 5012023 (1991-04-01), Venier et al.
patent: 5026577 (1991-06-01), Biresaw et al.
patent: 5084516 (1992-01-01), Tsuchiya et al.
patent: 5128216 (1992-07-01), Ng
patent: 5144095 (1992-09-01), Venier et al.
patent: 5162163 (1992-11-01), Ohta et al.
patent: 5310439 (1994-05-01), Matsui et al.
patent: 5364547 (1994-11-01), Babb et al.
patent: 5525392 (1996-06-01), Baum et al.
patent: 5541351 (1996-07-01), Patsidis et al.
patent: 5578237 (1996-11-01), Emert et al.
patent: 5578741 (1996-11-01), Frey et al.
patent: 5677051 (1997-10-01), Ueda et al.
patent: 5776602 (1998-07-01), Ueda et al.
patent: 5821027 (1998-10-01), Landry-Coltrain et al.
patent: 5874169 (1999-02-01), Falcone
patent: 6103677 (2000-08-01), Furutani et al.
patent: 6132875 (2000-10-01), Kiuchi et al.
patent: 6319600 (2001-11-01), Stirniman et al.
patent: 0613886 (1994-09-01), None
patent: 0613887 (1994-09-01), None
patent: 2559606 (1984-02-01), None
patent: 58222441 (1983-12-01), None
patent: 10140169 (1998-05-01), None
patent: 2001-207183 (2001-07-01), None
patent: WO 98/07145 (1998-02-01), None
patent: WO 00/58956 (2000-10-01), None
patent: WO 00/58956 (2000-10-01), None
Lambert et al., The Triple Bond as a Potential Double Donor in Solvolytic Participation,J. Org. Chem., 1975, pp. 633-636, vol. 40, No. 5.
Gream et al., The Camphenehydro (Methylcamphenilyl) and Isobornyl (Bornyl) Cations. Generation of the Enantiomeric Cations by the π and σ Routes of Solvolysis,Aust. J. Chem., 1974, pp. 567-587, vol. 27, No. 3.
Partial search Report, Feb. 27, 2003.
A.J. Gellman, Lubricants and overcoats for magnetic storage media, Colloid & Interface Science, vol. 3, pp. 368-372, 1999.
C.M. Mare, Picking the best lube for contact recording, Data Storage, pp 45-49, Jul./Aug. 1997.
M. Yang et al., Cyclotriphosphazenes as Potential Lubricants for Thin Film Hard Disks, Tribology Transactions, vol. 28, No. 3, pp. 636-664, 1995.
S. Mori et al., Tribochemical Reactions at the Head-Disk Interface on Magnetic Recording Media, Proceedings of ASIA TRIB, pp. 300-303, Oct. 12-15, 1998.
Q. Zhao et al., Tribological Study of Phosphazene-Type Additives in Perfluoropolyether Lubricant for Hard Disk Applications, STLE Preprint, No 98-TC-4C-1, pp. 1-6, 1998.
F.E. Talke, On tribological problems in magnetic disk recording technology, Wear, vol. 190, pp. 232-238, 1995.
C.G. Venier et al., Tris(2-Octyldodecyl)Cyclopetane, a Low Volatility, Wide Liquid-Range, Hydrocarbon Fluid, Unknown Publication, pp. 13.1-1-13.1-12.
E.W. Casserly et al., Tribologically Relevant Properties of Multyply-Alkylated Cyclopentanes. The Design of a Hydrocarbon Molecule for Aerospace Applications, Symposium on Chem. Lub. and Lubrication, American Chem Society, Boston, vol. 35, No. 2, pp. 265-271, Apr. 22-27, 1990.
G.G. Venier et al., Multiply-Alkylated Cyclopentanes (MACs): A New Class of Synthesized Hydrocarbon Fluids, Lubrication Engineering, vol. 47, No. 7, pp. 586-591, 1991.
G.G. Venier et al., Preparation of a New Class of Synthetic Lubricants, Multiply-Alkylated Cyclopentanes (MACs), Symposium on Chem. Lub. and Lubicants, American Chem. Society, Boston, vol. 35, No. 2, pp. 260-264, Apr. 22-27, 1990.
Vasil'EV et al., Compounds with an Herbal Odor VI.* The E Isomers of the Structural Analogs of Leaf Alcohol,Russian J. of Org. Chem., vol. 30, No. 6, pp. 870-875, 1994.
AL-Qallaf et al., Metal (IV) phosphate catalysed retro-Prins reaction involving an oxetane intermediate,J. Chem. Soc., Perlan Trans. 2, pp. 1421-1423, 1999.
Bartlett et al., Nucleophilic Reactivity of the Carbon-Carbon Double Bond. II. Solvolytic Ring Closure of 2-(3-Methyl- and 3,4 dimethyl -Δ3-cyclopentenyl)ethyl ρ-Nitrobenzenesulfonates,J. of Am. Chem. Soc., vol. 87, No. 6, pp. 1297-1307, 1965.
Vasil'Ev et al., Compounds with a Herbal Odor II.* CIS-1-(2-Hydroxyethyl)-2-Ethylcycloalkanes and Their Analogs,J. of Org. Chem. ofU.S.S.R., vol. 27, No. 2, pp. 273-278, 1991.
Suzuki et al., Vinylic Organoboranes. 1. A.Convenient Sythesis of Acetylenes via the Reaction of Lithium (1-Alkynyl) organoborates with Iodine,J. Org. Chem., vol. 51, No. 24, pp. 4507-4511, 1986.
Aldridge et al., Metabolites of Lasiodiplodia theobromae,J. Chem. Soc, Sect. C: Organic Chem., pp. 1623-1627, 1971.
Boatto et al., Amides and Formamidines with Antinociceptive Activity,Farmaco, vol. 48, No. 9, pp. 1279-1289, 1993.
Aldrich Catalogue Nederland, Cyclopentene, pp. 377, 1992.
Merck Index 11thEd., Cyclopentadiene and Cyclopentane, pp. 2741, 1989.
Shawe et al., Iterative Reductive Alkylation Approach to Alkaloids: A Synthesis of(±)-Monomorine Land Its C-3 Epimer,J. Org. Chem., vol. 59, pp. 5841-5842, 1994.
Hutchins et al., Stereoselective Reductions of Substituted Cyclohexyl and Cyclopentyl Carbon-Nitrogen π Systems with Hydride Reagents,J. Org. Chem., vol. 48, No. 20, pp. 3412-3422, 1983.
Ayerst et al., cis- and trans-3: 4-cyclo Pentanopiperidine,J. Org. Chem. Soc., pp. 4097-4104, 1958.
Masse et al., Lewis Acid-Mediated Carbocyclization Reactions of Chiral (E)-Crotylsilanes,J. Org. Chem., vol. 62, No. 26, pp. 9335-9338, 1997.
Fraenkel et al., Structure and Dynamic Behavior of Crowded Cis Vicinal [(N,N-Dimethylamino)cyclopentyl] trimethylammonium Salts and Related Compounds,J. Am. Chem. Soc., vol. 118, No. 50, pp. 12804-12811, 1996.
Snowden et al., Dienamines as Diels-Alder Dienes. An Efficient Cyclohexannulation Sequence,Tetrahedrom Letters, vol. 27 No. 6, pp. 699-702, 1986.
Suemune et al., Conversion of Limonene to Prostanoic Acid and 8-Isoprostanic Acid,Chem. Pharm. Bull., vol. 34, No. 2, pp. 550-557, 1986.
Gustavsson et al., Enantiomers of Cis- and Trans-3-(4-propyl-cyclopent-2-enyl) Propyl Acetate. A Study on the Bioactive Conformation and Chiral Recognition of a Moth Sex Pheromone Component,Bioorg. Med. Chem., vol. 5, No. 12, pp. 2173-2183, 1997.
Fujisawa et al., The Regiospecific Synthesis of Vicinally Dialkylated Cyclopentadienes and Its Application to a Sysnthesis of Allethrolone,Chem. Letters., No. 9, pp. 943-946, 1976.
Kramp et al., Synthesis of Enantiomerically Pure ent-Multifidene and Related Compounds,J. Chem. Soc. Chem. Conn., No. 6, pp. 551-552, 1993.
Search Report, Sep. 8, 2000.
Derwent Translation of FR 2559606 (Derwent Acc. No. 1985-238531).
Encylclopedia of Chemical Technology, 4thEd., vol. 15, pp. 485-486 (1995).
G.E.Gream, et al., The Camphenehydro (Methylcamphenilyl) and Isobornyl (Bornyl) Cations. I. Generation of the Enantiomeric cations by the pi and sigma routes of solvolysis, Aust. J. of Chem., vol. 27, No. 3, 1974, pp. 567-587.
J.B. Lambert et al., The Triple Bond as a Potential Double Donor in Solvolytic Participation, Journal of Organic Chem., vol. 40, No. 5, Mar. 1975, pp. 633-636.

Affiliated with

Also associated with

Rating

Lubricant for magnetic recording medium and use thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lubricant for magnetic recording medium and use thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lubricant for magnetic recording medium and use thereof will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3725408