US3294850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Haloalkylation process
Assignee: Union Oil Company of California
•
Filing: 1963-11-08
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Granted: 1966-12-27
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Expires: 1983-11-08
Abstract
No abstract record available.
Inventors
- 👤 George W Ayers
- 👤 William A Krewer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:17
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/26; C07C17/32
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
75 words
THE PROCESS FOR THE HALOALKYLATION OF AN ALKYL AROMATIC HYDROCARBON WHICH COMPRISES REACTING SAID HYDROCARBON WITH ONE OF THE GROUPS CONSISTING OF LOWER ALKANOLS AND POLYMERS THEREOF AND A HYDROGEN HALIDE IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS PENTOXIDE, AND COMPOSITIONS IN THE P2O5-H2O SYSTEM CONTAINING AT LEAST 84% BY WEIGHT TOTAL PHOSPHORUS CALCULATED AS PHOSPHORUS PENTOXIDE, AT A TEMPERATURE OF ABOUT 40* TO 120*C. AND AT ATMOSPHERIC PRESSURE.
Claim 2
Dependent Claim
75 words
THE PROCESS FOR THE HALOALKYLATION OF AN ALKYL AROMATIC HYDROCARBON WHICH COMPRISES REACTING SAID HYDROCARBON WITH ONE OF THE GROUPS CONSISTING OF LOWER ALKANOLS AND POLYMERS THEREOF AND A HYDROGEN HALIDE IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS PENTOXIDE, AND COMPOSITIONS IN THE P2O5-H2O SYSTEM CONTAINING AT LEAST 84% BY WEIGHT TOTAL PHOSPHORUS CALCULATED AS PHOSPHORUS PENTOXIDE, AT A TEMPERATURE OF ABOUT 40* TO 120*C. AND AT ATMOSPHERIC PRESSURE.
Claim 3
Dependent Claim
66 words
THE PROCESS FOR THE PREPARATION OF PARA-CHLOROMETHYLTOLUENE WHICH COMPRISES REACTING TOLUENE WITH A FORMALDEHYDE POLYMER AND HYDROGEN CHLORIDE IN THE PRESENCE OF A CATALYTIC AMOUNT OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS PENTOXIDE, AND COMPOSITIONS IN THE P2O5-H2O SYSTEM CONTAINING AT LEAST 84% BY WEIGHT TOTAL PHOSPHORUS CALCULATED AS PHOSPHORUS PENTOXIDE, AT A TEMPERATURE OF ABOUT 40* TO 120*C. AND AT ATMOSPHERIC PRESSURE.
Claim 4
Dependent Claim
66 words
THE PROCESS FOR THE PREPARATION OF PARA-CHLOROMETHYLTOLUENE WHICH COMPRISES REACTING TOLUENE WITH A FORMALDEHYDE POLYMER AND HYDROGEN CHLORIDE IN THE PRESENCE OF A CATALYTIC AMOUNT OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS PENTOXIDE, AND COMPOSITIONS IN THE P2O5-H2O SYSTEM CONTAINING AT LEAST 84% BY WEIGHT TOTAL PHOSPHORUS CALCULATED AS PHOSPHORUS PENTOXIDE, AT A TEMPERATURE OF ABOUT 40* TO 120*C. AND AT ATMOSPHERIC PRESSURE.
Claim 5
Dependent Claim
66 words
THE PROCESS OF PRODUCING PARA-CHLOROMETHYLTOLUENE WHICH COMPRISES REACTING TOLUENE WITH A FORMALDEHYDE POLYMER AND PHOSPHORUS OXYCHLORIDE IN THE PRESENCE OF HYDROGEN CHLORIDE AND CATALYTIC AMOUNT OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS PENTOXIDE, AND COMPOSITIONS IN THE P2O5-H2O SYSTEM CONTAINING AT LEAST 84% BY WEIGHT TOTAL PHOSPHORUS CALCULATED AS PHOSPHORUS PENTOXIDE, AT A TEMPERATURE OF ABOUT 40* TO 120*C. AND AT ATMOSPHERIC PRESSURE.
Claim 6
Dependent Claim
66 words
THE PROCESS OF PRODUCING PARA-CHLOROMETHYLTOLUENE WHICH COMPRISES REACTING TOLUENE WITH A FORMALDEHYDE POLYMER AND PHOSPHORUS OXYCHLORIDE IN THE PRESENCE OF HYDROGEN CHLORIDE AND CATALYTIC AMOUNT OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS PENTOXIDE, AND COMPOSITIONS IN THE P2O5-H2O SYSTEM CONTAINING AT LEAST 84% BY WEIGHT TOTAL PHOSPHORUS CALCULATED AS PHOSPHORUS PENTOXIDE, AT A TEMPERATURE OF ABOUT 40* TO 120*C. AND AT ATMOSPHERIC PRESSURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |