US2686738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispersion of polymeric trifluorochloroethylene, method of preparing said dispersion, and method of coating a base therewith
Assignee: MW Kellogg Co
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Filing: 1949-12-29
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Granted: 1954-08-17
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Expires: 1969-12-29
Abstract
No abstract record available.
Inventors
- 👤 Wilber O Teeters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:39
CPC Classifications
C; C09; C09D; C09D127/00; C09D127/02; C09D127/12; Y; Y10; Y10S; Y10S138/00; Y10S138/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
THE METHOD FOR APPLYING A FILM OF THE PLASTIC POLYMER OF TRIFLUOROCHLOROETHYLENE CONTAINING LESS THAN ABOUT 15 PER CENT OF A COMONOMER COPOLYMERIZABLE WITH TRIFLUOROCHLOROETHYLENE TO A SURFACE WHICH COMPRISES ADMIXING PLASTIC POLYMER OF TRIFLUOROCHLOROETHYLENE OF RELATIVELY LARGE PARTICLE SIZE OF THE ORDER OF 80 MESH WITH A LIQUID DISPERSING MEDIUM COMPRISING AS A DISPERSANT AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE NORMALLY LIQUID ALIPHATIC AND AROMATIC KETONES, HAVING A SURFACE TENSION OF AT LEAST ABOUT 23 DYNES/CM.2 AT 20* C. AND HAVING AT LEAST THREE CARBON ATOMS PER MOLECULE AND BUTYL ACETATE, PULVERIZING THE PLASTIC POLYMER OF TRIFLUOROCHLOROETHYLENE WHILE TO ADMIXTURE WITH THE LIQUID DISPERSING MEDIUM TO REDUCE THE PARTICLE SIZE OF SAID POLYMER AND TO FORM A DISPERSION THEREOF, CONTACTING THE SURFACE TO BE COATED WITH THE RESULTING DISPERSION A PLURALITY OF TIMES, DRYING THE SURFACE BETWEEN CONTACTS, AND AFTER THE LAST CONTACT HEATING THE SURFACE TO BE COATED TO A TEMPERATURE OF AT LEAST 200* C. FOR A SUFFICIENT PERIOD OF TIME TO CAUSE FUSION OF THE POLYMER AND TO FORM A CONTINUOUS FILM OF THE PLASTIC UPON THE SURFACE.
Claim 2
Independent Claim
187 words
THE METHOD FOR APPLYING A FILM OF THE PLASTIC POLYMER OF TRIFLUOROCHLOROETHYLENE CONTAINING LESS THAN ABOUT 15 PER CENT OF A COMONOMER COPOLYMERIZABLE WITH TRIFLUOROCHLOROETHYLENE TO A SURFACE WHICH COMPRISES ADMIXING PLASTIC POLYMER OF TRIFLUOROCHLOROETHYLENE OF RELATIVELY LARGE PARTICLE SIZE OF THE ORDER OF 80 MESH WITH A LIQUID DISPERSING MEDIUM COMPRISING AS A DISPERSANT AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE NORMALLY LIQUID ALIPHATIC AND AROMATIC KETONES, HAVING A SURFACE TENSION OF AT LEAST ABOUT 23 DYNES/CM.2 AT 20* C. AND HAVING AT LEAST THREE CARBON ATOMS PER MOLECULE AND BUTYL ACETATE, PULVERIZING THE PLASTIC POLYMER OF TRIFLUOROCHLOROETHYLENE WHILE TO ADMIXTURE WITH THE LIQUID DISPERSING MEDIUM TO REDUCE THE PARTICLE SIZE OF SAID POLYMER AND TO FORM A DISPERSION THEREOF, CONTACTING THE SURFACE TO BE COATED WITH THE RESULTING DISPERSION A PLURALITY OF TIMES, DRYING THE SURFACE BETWEEN CONTACTS, AND AFTER THE LAST CONTACT HEATING THE SURFACE TO BE COATED TO A TEMPERATURE OF AT LEAST 200* C. FOR A SUFFICIENT PERIOD OF TIME TO CAUSE FUSION OF THE POLYMER AND TO FORM A CONTINUOUS FILM OF THE PLASTIC UPON 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) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |