Patent US2670361A successfully refreshed from Google Patents.
US2670361A
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Polymerization process using hydrogen fluoride
Assignee: Individual
•
Filing: 1951-11-09
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Granted: 1954-02-23
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Expires: 1971-11-09
Abstract
No abstract record available.
Inventors
- 👤 Croston Clarence Bradford
- 👤 Howard M Teeter
- 👤 John C Cowan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:44
CPC Classifications
C; C09; C09F; C09F7/00; C09F7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PROCESS COMPRISING SUBJECTING A FATTY ACID MATERIAL DERIVED FROM DRYING AND SEMI-DRYING GLYCERIDE OILS AND SELECTED FROM THE GROUP CONSISTING OF A LONG-CHAIN, UNSATURATED, ALIPHATIC CARBOXYLIC ACID, A LOWER ALKYL THEREOF, AND MIXTURES OF SUCH ACIDS AND ESTERS, TO THE ACTION OF A POLYMERIZATION AGENT CONSISTING ESSENTIALLY OF HYDROGEN FLUORIDE AT A TEMPERATURE OF FROM 15* C. TO 100* C. UNTIL POLYMERIZATION IS EFFECTED, SAID HYDROGEN FLUORIDE BIING PRESENT IN AN AMOUNT OF FROM 15% TO 65% BASED ON THE WEIGHT OF THE FATTY ACID MATERIAL.
Claim 2
Dependent Claim
87 words
A PROCESS COMPRISING SUBJECTING A FATTY ACID MATERIAL DERIVED FROM DRYING AND SEMI-DRYING GLYCERIDE OILS AND SELECTED FROM THE GROUP CONSISTING OF A LONG-CHAIN, UNSATURATED, ALIPHATIC CARBOXYLIC ACID, A LOWER ALKYL THEREOF, AND MIXTURES OF SUCH ACIDS AND ESTERS, TO THE ACTION OF A POLYMERIZATION AGENT CONSISTING ESSENTIALLY OF HYDROGEN FLUORIDE AT A TEMPERATURE OF FROM 15* C. TO 100* C. UNTIL POLYMERIZATION IS EFFECTED, SAID HYDROGEN FLUORIDE BIING PRESENT IN AN AMOUNT OF FROM 15% TO 65% BASED ON THE WEIGHT OF THE FATTY ACID MATERIAL.
References Cited (Backward Citations)
US2260417A
Cited
US2478451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |