US2743304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing wax substituted aromatic hydrocarbons by reacting a chlorowax with the aromatic, wherein two gram atoms of chlorine are added per mole of aromatic and the temperature is maintained below 100deg. c.
Assignee: ConocoPhillips Co
•
Filing: 1952-05-02
•
Granted: 1956-04-24
•
Expires: 1972-05-02
Abstract
No abstract record available.
Inventors
- 👤 Marion L Sharrah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:01
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/86; C07C2/861; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/125; C07C2527/126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
THE METHOD OF PREPARING ALKYL SUBSTITUTED AROMATIC HYDROCARBONS WHICH COMPRISES BRINGING TOGETHER AND SLOWLY REACTING WITHIN A REACTION VESSEL IN THE PRESENCE OF A METAL HALIDE FRIEDEL-CRAFTS CATALYST AND UNDER MILD ALKYLATING CONDITIONS ABOVE ABOUT 50* C. BUT NOT EXCEEDING ABOUT 100* C., A VOLATILE AROMATIC HYDROCARBON HAVING A BOILING POINT BELOW ABOUT 125* C. AND A CHLORINATED ALIPHATIC HYDROCARBON OF ABOUT 18 TO 30 CARBON ATOMS WHICH IS A LIQUID AT 125* C., THE REACTANTS BEING BROUGHT TOGETHER IN RELATIVE PROPORTIONS OF ABOUT TWO CHLORINE GRAM EQUIVALENTS OF THE CHLORINATED HYDROCARBON TO EACH MOLE OF THE REACTANTS IN APPROXIMATELY THE THE CONCENTRATION OF THE REACTANTS IN APPROXIMATELY THE SAME RELATIVE PROPORTION THROUGHTOUT THE REACTION, MAINTAINING THE REACTION MASS AT ALL TIMES IN THE RANGE FROM ABOUT 50 TO NOT MORE THAN 100* C., WITHOUT DISTILLATIVE FRACTIONATION FINISHING OFF THE PRODUCT BY MAINTAINING THE MASS FOR SEVERAL HOURS AT AN ELEVATED TEMPERATURE NOT IN EXCESS OF ABOUT 100* C. UNTIL THE METAL HALIDE SLUDGE HAS SETTLED OUT AND THEN SEPARATING THE ALKYLATE PRODUCT FROM THE CATALYST SLUDGE.
Claim 2
Independent Claim
177 words
THE METHOD OF PREPARING ALKYL SUBSTITUTED AROMATIC HYDROCARBONS WHICH COMPRISES BRINGING TOGETHER AND SLOWLY REACTING WITHIN A REACTION VESSEL IN THE PRESENCE OF A METAL HALIDE FRIEDEL-CRAFTS CATALYST AND UNDER MILD ALKYLATING CONDITIONS ABOVE ABOUT 50* C. BUT NOT EXCEEDING ABOUT 100* C., A VOLATILE AROMATIC HYDROCARBON HAVING A BOILING POINT BELOW ABOUT 125* C. AND A CHLORINATED ALIPHATIC HYDROCARBON OF ABOUT 18 TO 30 CARBON ATOMS WHICH IS A LIQUID AT 125* C., THE REACTANTS BEING BROUGHT TOGETHER IN RELATIVE PROPORTIONS OF ABOUT TWO CHLORINE GRAM EQUIVALENTS OF THE CHLORINATED HYDROCARBON TO EACH MOLE OF THE REACTANTS IN APPROXIMATELY THE THE CONCENTRATION OF THE REACTANTS IN APPROXIMATELY THE SAME RELATIVE PROPORTION THROUGHTOUT THE REACTION, MAINTAINING THE REACTION MASS AT ALL TIMES IN THE RANGE FROM ABOUT 50 TO NOT MORE THAN 100* C., WITHOUT DISTILLATIVE FRACTIONATION FINISHING OFF THE PRODUCT BY MAINTAINING THE MASS FOR SEVERAL HOURS AT AN ELEVATED TEMPERATURE NOT IN EXCESS OF ABOUT 100* C. UNTIL THE METAL HALIDE SLUDGE HAS SETTLED OUT AND THEN SEPARATING THE ALKYLATE PRODUCT FROM THE CATALYST SLUDGE.
References Cited (Backward Citations)
US2247365A
Cited
US1963918A
Cited
US2015748A
Cited
US2072061A
Cited
US2223364A
Cited
US2340654A
Cited
US2416281A
Cited
US2443082A
Cited
US2437356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |