US2873299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halomethylation of aromatic compounds
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1954-12-09
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Granted: 1959-02-10
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Expires: 1974-12-09
Abstract
No abstract record available.
Inventors
- 👤 Louis A Mikeska
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:15
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/26; C07C17/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PROCESS FOR PREPEARING BIS (HALOMETHYL) AROMATIC COMPOUNDS WHICH COMPRISES REACTING A BENZENE HYDROCARBON WITH AT LEAST 2 MOLES PER MOLE OF HYDROCARBON OF A HALOMETHYL ALKYL EITHER HAVING THE GENERAL FORMULA, ROCH2X, WHERIN R IS AN ALKYL GROUP CONSISTING OF CHLORINE GEN SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE IN THE LIQUID PHASE IN THE PRESENCE OF AT LEAST 2 MOLES OF AN ACYLATING AGENT PER MOLE OF BENZENE HY DROCARBON, SAID ACYLATING AGENT IS SELECTED FROM THE GROUP CONSISTING OF ANHYDRIDES AND CHLORINE OF MONOCARBOXYLIC ALIPHATIC ACID OF 2 TO 3 CARBON ATOMS.
Claim 2
Dependent Claim
97 words
A PROCESS FOR PREPEARING BIS (HALOMETHYL) AROMATIC COMPOUNDS WHICH COMPRISES REACTING A BENZENE HYDROCARBON WITH AT LEAST 2 MOLES PER MOLE OF HYDROCARBON OF A HALOMETHYL ALKYL EITHER HAVING THE GENERAL FORMULA, ROCH2X, WHERIN R IS AN ALKYL GROUP CONSISTING OF CHLORINE GEN SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE IN THE LIQUID PHASE IN THE PRESENCE OF AT LEAST 2 MOLES OF AN ACYLATING AGENT PER MOLE OF BENZENE HY DROCARBON, SAID ACYLATING AGENT IS SELECTED FROM THE GROUP CONSISTING OF ANHYDRIDES AND CHLORINE OF MONOCARBOXYLIC ALIPHATIC ACID OF 2 TO 3 CARBON ATOMS.
References Cited (Backward Citations)
US2469334A
Cited
US2569409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |