US3243270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of gelled liquids
Assignee: ConocoPhillips Co
•
Filing: 1964-12-11
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Granted: 1966-03-29
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Expires: 1984-12-11
Abstract
No abstract record available.
Inventors
- 👤 Pat W K Flanagan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:16
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/06; C; C07; C07F; C07F5/00; C07F5/06; C07F5/069; Y; Y10; Y10S; Y10S507/00; Y10S507/922; Y10S516/00; Y10S516/924; Y10S516/928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A METHOD OF PREPARING A GELLED LIQUID SELECTED FROM THE GROUP CONSISTING OF HYDROCARBONS, ETHERS, TETRAHYDROFURAN, PYRIDINE AND DIMETHYLFORMAMIDE WHICH COMPRISES ADDING TO THE LIQUID TO BE GELLED AT LEAST ABOUT 4 WEIGHT PERCENT BASED ON THE WEIGHT OF SAID LIQUID OF A GELLING AGENT PREPARED BY THE METHOD WHICH COMPRISES: REACTING A TRIALKYLALUMINUM COMPOUND WITH SULFUR DIOXIDE, WHEREIN SAID TRIALKYLALUMINUM COMPOUND IS ADDED TO SAID SULFUR DIOXIDE AT A TEMPERATURE VARYING FROM -75 TO 50* C. IN THE PRESENCE OF A SOLVENT FOR THE RESULTING REACTION PRODUCT, SAID SOLVENT CHARACTERIZED FURTHER IN THAT IT HAS A BOILING POINT ABOVE THE REACTION TEMPERATURE EMPLOYED AND IS SELECTED FROM THE GROUP CONSISTING OF HYDROCARBONS, ETHERS, TETRAHYDROFURAN, PYRIDINE AND DIMETHYLFORMAMIDE AND THEN REMOVING THE UNREACTED SUFUR DIOXIDE AND ANY UNDESIRED SOLVENT, THE GEL BEING FORMED BY HEATING THE LIQUID HAVING THE SO-FORMED GELLING AGENT ADMIXED THEREWITH WITH STIRRING AND SUFFICIENT HEATING TO PRODUCE A GEL.
Claim 2
Independent Claim
153 words
A METHOD OF PREPARING A GELLED LIQUID SELECTED FROM THE GROUP CONSISTING OF HYDROCARBONS, ETHERS, TETRAHYDROFURAN, PYRIDINE AND DIMETHYLFORMAMIDE WHICH COMPRISES ADDING TO THE LIQUID TO BE GELLED AT LEAST ABOUT 4 WEIGHT PERCENT BASED ON THE WEIGHT OF SAID LIQUID OF A GELLING AGENT PREPARED BY THE METHOD WHICH COMPRISES: REACTING A TRIALKYLALUMINUM COMPOUND WITH SULFUR DIOXIDE, WHEREIN SAID TRIALKYLALUMINUM COMPOUND IS ADDED TO SAID SULFUR DIOXIDE AT A TEMPERATURE VARYING FROM -75 TO 50* C. IN THE PRESENCE OF A SOLVENT FOR THE RESULTING REACTION PRODUCT, SAID SOLVENT CHARACTERIZED FURTHER IN THAT IT HAS A BOILING POINT ABOVE THE REACTION TEMPERATURE EMPLOYED AND IS SELECTED FROM THE GROUP CONSISTING OF HYDROCARBONS, ETHERS, TETRAHYDROFURAN, PYRIDINE AND DIMETHYLFORMAMIDE AND THEN REMOVING THE UNREACTED SUFUR DIOXIDE AND ANY UNDESIRED SOLVENT, THE GEL BEING FORMED BY HEATING THE LIQUID HAVING THE SO-FORMED GELLING AGENT ADMIXED THEREWITH WITH STIRRING AND SUFFICIENT HEATING TO PRODUCE A GEL.
References Cited (Backward Citations)
GB819181A
Cited
DE1050762B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |