US3862860A
Expired / Lapsed
US
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Method and composition for lubricating and lubricated substrates
Assignee: BAE Systems Space & Mission Systems Inc
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Filing: 1973-06-25
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Granted: 1975-01-28
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Expires: 1993-06-25
Abstract
Abstract Method and composition for improving lubricity, abrasion resistance, and lowering the coefficient friction of substrates such as photographic film, magnetic surfaces and other recording elements by applying to such substrates a solution comprising tetrafluoroethylene telomer and a copolymer of vinyl chloride and trifluorochloroethylene in a volatile solvent, drying and removing the excess, and substrates so lubricated.
Inventors
- 👤 Robert P Pardee
- 👤 Jr Archie L Bickling
- 👤 Thomas J Loran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:39
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; G11B5/71; C; C09; C09D; C09D127/00; C09D127/02; C09D127/04; C09D127/06; C09D127/12; G03; G03C; G03C11/00; G03C11/06; G11B3/00; G11B3/58; G11B3/589; C10; C10M; C10M2211/00; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10N; C10N2040/00; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50; C10N2050/00; C10N2050/015; C10N2050/02; C10N2050/04; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10S430/00; Y10S430/162; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31884
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
15 words
A method as set forth in claim 1, wherein the substrate is a magnetic tape.
Claim 2
Dependent Claim
18 words
A method as set forth in claim 1, wherein the coating is buffed after the solvent is removed.
Claim 3
Dependent Claim
24 words
A method as set forth in claim 1, wherein after admixing the copolymer and telomer in the solvent, any undissolved portions are separated therefrom.
Claim 4
Dependent Claim
17 words
A method as set forth in claim 4, wherein the separation is accomplished by filtering the admixture.
Claim 5
Dependent Claim
19 words
A method as set forth in claim 4, wherein the separation is accomplished by decanting effluent of the admixture.
Claim 6
Dependent Claim
22 words
A method as set forth in claim 4, wherein the substrate to which the separated solution is applied is a photographic film.
Claim 7
Dependent Claim
15 words
A method as set forth in claim 7, wherein the separation is accomplished by filtering.
Claim 8
Dependent Claim
36 words
A method as set forth in claim 1, wherein the copolymer and telomer are admixed in a ratio of between 0.5 parts by weight and 50 parts by weight of copolymer to each part of telomer.
Claim 9
Dependent Claim
36 words
A method as set forth in claim 1, wherein the copolymer and telomer are admixed in a ratio of between 1.0 parts by weight and 5 parts by weight of copolymer for each part of telomer.
Claim 10
Dependent Claim
23 words
A method as set forth in claim 1, wherein the solvent is a halogenated aliphatic hydrocarbon solvent having four or fewer carbon atoms.
Claim 11
Dependent Claim
34 words
A method as set forth in claim 11, wherein the solvent is selected from the group consisting of trichlorotrifluoroethane, 1, 1, 1-trichloroethane (methyl chloroform), chloroform, tetrachloroethylene, trichloroethylene, methylene chloride, carbon tetrachloride, dichloroethylene and dichloroethane.
Claim 12
Independent Claim
58 words
A method of lubricating magnetic substrates, comprising: combining a copolymer of trifluorochloroethylene and vinyl chloride, a tetrafluoroethylene telomer and a solvent for the polymeric constituents, applying the combined ingredients to the magnetic substrate, and removing the solvent therefrom, whereby the polymeric materials are deposited upon the surface of the magnetic substrate to provide a thin, lubricous coating thereon.
Claim 13
Dependent Claim
23 words
A method as set forth in claim 13, wherein the lubricated surface of the magnetic substrate is buffed after the solvent is removed.
Claim 14
Dependent Claim
34 words
A method as set forth in claim 13, wherein the undissolved copolymer and undissolved telomer are separated from the dissolved copolymer and dissolved telomer before application of the dissolved ingredients to the magnetic substrate.
Claim 15
Independent Claim
86 words
A method of lubricating the surface of photographic film, comprising: combining a copolymer of trifluorochloroethylene and vinyl chloride, a tetrafluoroethylene telomer and a solvent for the copolymer and telomer materials, separating the undissolved portions of the copolymer and telomer from the solution, applying the solution to the film surface, removing the solvent from the film surface, and lightly buffing the deposited copolymer and telomer on the film surface, whereby a thin, transparent, protective and low friction coating is formed on the surface of the photographic film.
Claim 16
Independent Claim
40 words
A method of lubricating substrates, comprising: applying a copolymer of trifluorochloroethylene and vinyl chloride in a solvent to the surface of the substrate, applying a tetrafluoroethylene telomer in a solvent to the surface, and removing the solvent from the surface.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |