US2569644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic fluorine compositions and method of making
Assignee: Individual
•
Filing: 1944-10-18
•
Granted: 1951-10-02
•
Expires: 1964-10-18
Abstract
No abstract record available.
Inventors
- 👤 Frederic B Stilmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:11
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; B; B01; B01J; B01J27/00; B01J27/06; C07; C07C; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/208; C07C17/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
THE METHOD OF PREPARING HIGHLY FLUORINATED ORGANIC CONDENSATION PRODUCTS FROM A CHLOROFLUORO ORGANIC COMPOUND WHICH COMPRISES HEATING A CHLOROFLUORO ORGANIC COMPOUND WHICH IS SELECTED FROM THE ALIPHATIC AND ALICYCLIC SERIES AND WHICH CONSISTS OF FROM TWO TO SEVEN CARBON ATOMS, A PLURALITY OF FLUORINE ATOMS, A PLURALITY OF CHLORINE ATMS AND NOT MORE THAN TWO HYDROGEN ATOMS PER MOLECULE IN LIQUID PHASE CONTACT WITH A METALLIC COPPER CONDENSING AGENT AT A TEMPERATURE BETWEEN 140* C. AND 350* C., DILUTING THE REACTION MIXTURE WITH AN ORGANIC SOLVENT, SEPARATING THE SOLID USED CONDENSING AGENT FROM THE LIQUID MIXTURE OF CONDENSATION PRODUCTS AND ORGANIC SOLVENT, DISTILLING OFF THE ORGANIC SOLVENT, SEPARATING THE CONDENSATION PRODUCTS BY FRACTIONAL DISTILLATION, AND THEN FURTHER FLUORINATING SAID CONDENSATION PRODUCTS BY REACTING THEM WITH A FLUORINATING AGENT SELECTED FROM THE GROUP CONSISTING OF ANTIMONY PENTAFLUORIDE, SILVER DIFLUORIDE, COBALT TRIFLUORIDE AND MANGANESE TRIFLUORIDE SO AS TO REPLACE AT LEAST A PART OF THE RESIDUAL CHLORINE BY FLUROINE.
Claim 2
Independent Claim
157 words
THE METHOD OF PREPARING HIGHLY FLUORINATED ORGANIC CONDENSATION PRODUCTS FROM A CHLOROFLUORO ORGANIC COMPOUND WHICH COMPRISES HEATING A CHLOROFLUORO ORGANIC COMPOUND WHICH IS SELECTED FROM THE ALIPHATIC AND ALICYCLIC SERIES AND WHICH CONSISTS OF FROM TWO TO SEVEN CARBON ATOMS, A PLURALITY OF FLUORINE ATOMS, A PLURALITY OF CHLORINE ATMS AND NOT MORE THAN TWO HYDROGEN ATOMS PER MOLECULE IN LIQUID PHASE CONTACT WITH A METALLIC COPPER CONDENSING AGENT AT A TEMPERATURE BETWEEN 140* C. AND 350* C., DILUTING THE REACTION MIXTURE WITH AN ORGANIC SOLVENT, SEPARATING THE SOLID USED CONDENSING AGENT FROM THE LIQUID MIXTURE OF CONDENSATION PRODUCTS AND ORGANIC SOLVENT, DISTILLING OFF THE ORGANIC SOLVENT, SEPARATING THE CONDENSATION PRODUCTS BY FRACTIONAL DISTILLATION, AND THEN FURTHER FLUORINATING SAID CONDENSATION PRODUCTS BY REACTING THEM WITH A FLUORINATING AGENT SELECTED FROM THE GROUP CONSISTING OF ANTIMONY PENTAFLUORIDE, SILVER DIFLUORIDE, COBALT TRIFLUORIDE AND MANGANESE TRIFLUORIDE SO AS TO REPLACE AT LEAST A PART OF THE RESIDUAL CHLORINE BY FLUROINE.
References Cited (Backward Citations)
US1998309A
Cited
US2186916A
Cited
US2129289A
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US2122278A
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DE677071C
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US2230654A
Cited
US2387247A
Cited
US2384821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |