US2786738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of an antimony-containing fluorinating agent
Assignee: Dow Chemical Co
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Filing: 1950-11-03
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Granted: 1957-03-26
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Expires: 1970-11-03
Abstract
No abstract record available.
Inventors
- 👤 Robert P Ruh
- 👤 Ralph A Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:24
CPC Classifications
C; C01; C01G; C01G30/00; C01G30/006; C01G30/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A METHOD OF REGENERATING A SPENT ANTIMONY HALIDE FLUORINATING AGENT COMPOSED ESSENTIALLY OF THE ELEMENTS ANTIMONY, BROMINE, AND FLUORINE AND CONTAINING LESS THAN ONE FLUORINE ATOM PER ANTIMONY ATOM WHICH COMPRISES (1) TREATING THE SPENT AGENT WITH FREE CHLORINE IN A PROPORTION OF FROM 0.05 TO 1 EQUIVALENT PER EQUIVALENT OF BROMINE IN THE SPENT AGENT TO REPLACE AT LEAST A SUBSTANTIAL PORTION OF THE BROMINE THEREOF CHLORINE, SUCH PROPORTION BEING INSUFFICIENT TO INCREASE THE VALENCE OF THE ANTIMONY, AND (2) FLUORINATING THE RESULTING CHLORINATED PRODUCT BY TREATMENT THEREOF WITHFORM 11/3 TO 12 MOLS OF HF PER MOL OF CHLORINE USED IN STEP 1 AT FROM 50* TO 200*C. TO REPLACE WITH FLUORINE AT LEAST A SUBSTANTIAL PORTION OF THE CHLORINE INTRODUCED IN STEP 1.
Claim 2
Independent Claim
125 words
A METHOD OF REGENERATING A SPENT ANTIMONY HALIDE FLUORINATING AGENT COMPOSED ESSENTIALLY OF THE ELEMENTS ANTIMONY, BROMINE, AND FLUORINE AND CONTAINING LESS THAN ONE FLUORINE ATOM PER ANTIMONY ATOM WHICH COMPRISES (1) TREATING THE SPENT AGENT WITH FREE CHLORINE IN A PROPORTION OF FROM 0.05 TO 1 EQUIVALENT PER EQUIVALENT OF BROMINE IN THE SPENT AGENT TO REPLACE AT LEAST A SUBSTANTIAL PORTION OF THE BROMINE THEREOF CHLORINE, SUCH PROPORTION BEING INSUFFICIENT TO INCREASE THE VALENCE OF THE ANTIMONY, AND (2) FLUORINATING THE RESULTING CHLORINATED PRODUCT BY TREATMENT THEREOF WITHFORM 11/3 TO 12 MOLS OF HF PER MOL OF CHLORINE USED IN STEP 1 AT FROM 50* TO 200*C. TO REPLACE WITH FLUORINE AT LEAST A SUBSTANTIAL PORTION OF THE CHLORINE INTRODUCED IN STEP 1.
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) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |