Patent US4801468A successfully refreshed from Google Patents.
Patent US3284518A successfully refreshed from Google Patents.
US3284518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Haloalkylation of aromatic compounds
Assignee: Union Oil Company of California
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Filing: 1962-10-29
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Granted: 1966-11-08
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Expires: 1982-10-29
Abstract
No abstract record available.
Inventors
- 👤 George W Ayers
- 👤 William A Krewer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:38
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/26; C07C17/32; C07C51/00; C07C51/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
THE PROCESS OF PREPARING PARAHALOMETHYLATED AROMATIC COMPOUDS OF THE GROUP CONSISTING OF PARABROMOMETHYLATED AND PARACHLOROMETHYLATED DERIVATIVES OF A MONOSUBSTITUTED BENZENE SELECTED FROM THE CLASS CONSISTING OF TOLUENE, ETHYLBENZE, BUTOXYBENZENE, CYCLOBUTYLBENZENE, CHLOROBENZENE, ETHOXYBENZE, CYCLOBUTYLBENBENZENE AND PROPOXY BENZENE, WHICH CONSISTS IN REACTING ABOUT 3 MOLES OF SAID MONOSUBSTITUTED BENZENE AT A TEMPERATURE OF ABOUT 10* TO 130* C. WITH ABOUT 3 MOLES OF A FORMALDEHYDE-PRODUCING AGENT OF THE GROUP CONSISTING OF FORMALDEHYDE, PARAFORMALDEHYDE, TRIOXYMETHYLENE AND MIXTURES THEREOF AND ABOUT 1 MOLE OF THE CORESPONDING PHOSPHORUS COMPOUND OF THE GROUP CONSISTING OF PHOSPHORUS OXYCHLORIDE AND PHOSPHORUS OXYBROMIDE AND MIXTURES THEREOF IN THE PRESENCE OF ABOUT 0.01 TO 5.0% BY WEIGHT OF A HYDROHALIC ACID BASED ON THE WEIGHT OF SAID REACTANTS.
Claim 2
Dependent Claim
118 words
THE PROCESS OF PREPARING PARAHALOMETHYLATED AROMATIC COMPOUDS OF THE GROUP CONSISTING OF PARABROMOMETHYLATED AND PARACHLOROMETHYLATED DERIVATIVES OF A MONOSUBSTITUTED BENZENE SELECTED FROM THE CLASS CONSISTING OF TOLUENE, ETHYLBENZE, BUTOXYBENZENE, CYCLOBUTYLBENZENE, CHLOROBENZENE, ETHOXYBENZE, CYCLOBUTYLBENBENZENE AND PROPOXY BENZENE, WHICH CONSISTS IN REACTING ABOUT 3 MOLES OF SAID MONOSUBSTITUTED BENZENE AT A TEMPERATURE OF ABOUT 10* TO 130* C. WITH ABOUT 3 MOLES OF A FORMALDEHYDE-PRODUCING AGENT OF THE GROUP CONSISTING OF FORMALDEHYDE, PARAFORMALDEHYDE, TRIOXYMETHYLENE AND MIXTURES THEREOF AND ABOUT 1 MOLE OF THE CORESPONDING PHOSPHORUS COMPOUND OF THE GROUP CONSISTING OF PHOSPHORUS OXYCHLORIDE AND PHOSPHORUS OXYBROMIDE AND MIXTURES THEREOF IN THE PRESENCE OF ABOUT 0.01 TO 5.0% BY WEIGHT OF A HYDROHALIC ACID BASED ON THE WEIGHT OF SAID REACTANTS.
References Cited (Backward Citations)
US2966514A
Cited
US3076039A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |