Claims
- 1. A lubricating film comprising:
- a chemically adsorbed monomolecular film comprising organic molecules covalently bonded to a substrate surface, wherein the number of carbon atoms of said organic molecules is between 8 and 30, and
- a layer of physically adsorbed organic compounds comprising carbon chains physically adsorbed to the surface of said chemically adsorbed monomolecular film,
- said physically adsorbed organic compounds comprising at least one compound selected from the group consisting of hydrocarbon-based fatty acids, fatty acid esters, silicon derivatives having Si and an alkyl group in a part of a structure, fatty acid salts, and fatty acid amides;
- wherein a surface of the substrate coated with said lubricating film has sufficient durability that said lubricating film will endure 5,000 repetitions of sliding a 100 gm steel ball on the substrate in a range of 10 cm.
- 2. A lubricating film according to claim 1, wherein said organic molecules comprise fluorocarbon groups at the end of said molecules.
- 3. A lubricating film according to claim 1, wherein the substrate is selected from the group consisting of ceramics, metals, resins, wood, inorganics, papers, fibers, and information recording media.
- 4. A lubricating film according to claim 1, wherein the substrate is treated to expose its active hydrogens to the surface.
- 5. A lubricating film according to claim 1, wherein a covalent bond is formed with atoms selected from the group consisting of oxygen, sulfur, nitrogen, silicon, titanium and tin.
- 6. A lubricating film according to claim 1, wherein said organic molecules comprise side chains.
- 7. A lubricating film according to claim 1, wherein said organic molecules comprise at least two kinds of molecules.
Priority Claims (1)
Number |
Date |
Country |
Kind |
4-202646 |
Jul 1992 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 08/588,362, filed Aug. 14, 1995, now abandoned, which is a continuation of application Ser. No. 08/098,050, filed Jul. 28, 1993, now abandoned.
US Referenced Citations (11)
Foreign Referenced Citations (5)
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0 363 924 |
Apr 1990 |
EPX |
0 426 440 |
May 1991 |
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Mar 1992 |
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Continuations (2)
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Number |
Date |
Country |
Parent |
588362 |
Aug 1995 |
|
Parent |
098050 |
Jul 1993 |
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