US3154506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polytetrafluoroethylene-water insoluble cellulosic ester dispersions and method of forming coatings therewith
Assignee: Acheson Industries Inc
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Filing: 1958-09-08
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Granted: 1964-10-27
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Expires: 1978-09-08
Abstract
No abstract record available.
Inventors
- 👤 Walter D Janssens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:32
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/24; B05D7/26; C; C09; C09D; C09D101/00; C09D101/08; C09D101/26; C09D127/00; C09D127/02; C09D127/12; C09D127/18; C10; C10M; C10M7/00; C08; C08L; C08L1/00; C08L1/08; C08L1/26; C08L29/00; C08L29/14; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/06; C10M2201/061; C10M2201/065; C10M2201/066; C10M2201/08; C10M2201/081; C10M2201/082; C10M2201/084; C10M2201/10; C10M2201/102; C10M2201/16; C10M2201/18; C10M2203/00; C10M2203/10; C10M2203/102; C10M2203/104; C10M2203/106; C10M2203/108; C10M2207/00; C10M2207/28; C10M2207/30; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/10; C10M2209/101; C10M2209/12; C10M2211/00; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/20; C10M2215/202; C10M2215/24; C10M2215/26; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/10; C10M2219/104; C10M2219/108; C10N; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/08; C10N2050/10; C10N2070/00; C10N2070/02; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24364; Y10T428/24372; Y10T428/24405; Y10T428/24802; Y10T428/24893; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
129 words
A POLYTETRAFLUOROETHYLENE DISPERSION COMPRISING POLYTETRAFLUOROETHYLENE PARTICLES HAVING A SIZE IN THE RANGE OF ABOUT 0.1 MICRON TO ABOUT 3 MICRONS, AT LEAST ONE WATER INSOLUBLE CELLUOSE ESTER RESIN, AND A DISPERSING MEDIUM CONSISTING OF WATER, AN ORGANIC SOLVENT FOR SAID RESIN CONSISTING OF A WATER INSOLUBLE PORTION AND A WATER SOLUBLE PORTION, SAID WATER INSOLUBLE PORTION CONSTITUTING AT LEAST ABOUT 15% OF SAID DISPERSING MEDIUM ABOUT 5% TO ABOUT 15% BY WEIGHT, BASED ON THE WEIGHT OF THE SAID CELLULOSE ESTER RESIN SOLIDS, OF A STABILITY-PROMOTING MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYVINYL BUTYRAL, POLYVINYL FORMAL, ETHYL CELLULOSE AND ETHYL HYDROXYETHYL CELLULOSE, SAID DISPERSION CONTAINING LESS THAN ABOUT 35% COMBINED POLYTETRAFLUOROETHYLENE AND RESIN SOLIDS, AND THE POLYTETRAFLUOROETHYLENE CONSTITUTING BETWEEN ABOUT 10% AND ABOUT 80% OF SAID COMBINED SOLIDS.
Claim 2
Dependent Claim
129 words
A POLYTETRAFLUOROETHYLENE DISPERSION COMPRISING POLYTETRAFLUOROETHYLENE PARTICLES HAVING A SIZE IN THE RANGE OF ABOUT 0.1 MICRON TO ABOUT 3 MICRONS, AT LEAST ONE WATER INSOLUBLE CELLUOSE ESTER RESIN, AND A DISPERSING MEDIUM CONSISTING OF WATER, AN ORGANIC SOLVENT FOR SAID RESIN CONSISTING OF A WATER INSOLUBLE PORTION AND A WATER SOLUBLE PORTION, SAID WATER INSOLUBLE PORTION CONSTITUTING AT LEAST ABOUT 15% OF SAID DISPERSING MEDIUM ABOUT 5% TO ABOUT 15% BY WEIGHT, BASED ON THE WEIGHT OF THE SAID CELLULOSE ESTER RESIN SOLIDS, OF A STABILITY-PROMOTING MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYVINYL BUTYRAL, POLYVINYL FORMAL, ETHYL CELLULOSE AND ETHYL HYDROXYETHYL CELLULOSE, SAID DISPERSION CONTAINING LESS THAN ABOUT 35% COMBINED POLYTETRAFLUOROETHYLENE AND RESIN SOLIDS, AND THE POLYTETRAFLUOROETHYLENE CONSTITUTING BETWEEN ABOUT 10% AND ABOUT 80% OF SAID COMBINED SOLIDS.
Claim 3
Dependent Claim
146 words
A POLYTETRAFLUOROETHYLENE DISPERSION CONSISTING ESSENTIALLY OF POLYTETRAFLUOUROETHYLENE PARTICLES HAVING A SIZE IN THE RANGE OF ABOUT 0.1 MICRON TO ABOUT 3 MICRONS, AT LEAST ONE WATER INSOLUBLE CELLULOSE ESTER RESIN AND A DISPERSING MEDIUM, SAID DISPERSING MEDIUM CONSISTING OF WATER, AN ORGANIC SOLVENT FOR SAID RESING CONSISTING OF A WATER INSOLUBLE PORTION AND A WATER SOLUBLE PORTION, SAID WATER INSOLUBLE PORTION CONSTITUTING AT LEAST ABOUT 15% OF SAID DISPERSING MEDIUM, AND AT LEAST ONE OTHER LOW FRICTION PIGMENT SELECTED FROM THE GROUP CONSISTING OF GRAPHITE, MOLYBDENUM DISULFIDE, BORON NITRIDE, TALC, VERMICULITE, TUNGSTEN DISULFIDE, SILVER SULFATE AND YELLOW LEAD OXIDE, SAID DISPERSION CONTAINING LESS THAN ABOUT 35% COMBINED POLYTETRAFLUOROETHYLENE, RESIN AND SAID OTHER LOW FRICTION PIGMENT SOLIDS, SAID POLYTETRAFLUOROETHYLENE CONSTITUTING BETWEEN ABOUT 10% AND ABOUT 80% OF SAID COMBINED SOLIDS AND SAID LOW FRICTION PIGMENT CONSTITUTING BETWEEN ABOUT 10% AND ABOUT 30%, BY WEIGHT, OF SAID POLYTETRAFLUOROETHYLENE.
Claim 4
Dependent Claim
146 words
A POLYTETRAFLUOROETHYLENE DISPERSION CONSISTING ESSENTIALLY OF POLYTETRAFLUOUROETHYLENE PARTICLES HAVING A SIZE IN THE RANGE OF ABOUT 0.1 MICRON TO ABOUT 3 MICRONS, AT LEAST ONE WATER INSOLUBLE CELLULOSE ESTER RESIN AND A DISPERSING MEDIUM, SAID DISPERSING MEDIUM CONSISTING OF WATER, AN ORGANIC SOLVENT FOR SAID RESING CONSISTING OF A WATER INSOLUBLE PORTION AND A WATER SOLUBLE PORTION, SAID WATER INSOLUBLE PORTION CONSTITUTING AT LEAST ABOUT 15% OF SAID DISPERSING MEDIUM, AND AT LEAST ONE OTHER LOW FRICTION PIGMENT SELECTED FROM THE GROUP CONSISTING OF GRAPHITE, MOLYBDENUM DISULFIDE, BORON NITRIDE, TALC, VERMICULITE, TUNGSTEN DISULFIDE, SILVER SULFATE AND YELLOW LEAD OXIDE, SAID DISPERSION CONTAINING LESS THAN ABOUT 35% COMBINED POLYTETRAFLUOROETHYLENE, RESIN AND SAID OTHER LOW FRICTION PIGMENT SOLIDS, SAID POLYTETRAFLUOROETHYLENE CONSTITUTING BETWEEN ABOUT 10% AND ABOUT 80% OF SAID COMBINED SOLIDS AND SAID LOW FRICTION PIGMENT CONSTITUTING BETWEEN ABOUT 10% AND ABOUT 30%, BY WEIGHT, OF SAID POLYTETRAFLUOROETHYLENE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |