Patent US2906781A successfully refreshed from Google Patents.
US2906781A
Expired / Lapsed
US
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Hydrohalogenation of styrene compounds
Assignee: Dow Chemical Co
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Filing: 1957-09-19
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Granted: 1959-09-29
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Expires: 1977-09-19
Abstract
No abstract record available.
Inventors
- 👤 Robert S Montgomery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:18
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/07; C07C17/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A METHOD WHICH COMPRISES MAKING A HALOETHYLBENZENE COMPOUND BY INTERACTING A STYRENE COMPOUND IN LIQUID FORM AND SELECTED FROM THE GROUP CONSISTING OF STYRENEM NUCLEAR ALKYL STYRENES, AND NUCLEAR HALOGENATED DERIVATIVES OF THE STYRENE HYDROCARBONS JUST MENTIONED AND A HYDROGEN HALIDE SELECTED FROM THE GROUP CONSISTING OF HYDROGEN CHLORIDE AND HYDROGEN BROMIDE IN THE PRESENCE OF AN INSOLUBLE SOLID CATALYST CONTAINING A COPPER HALIDE SELECTED FROM THE GROUP CONSISTING OF COPPER CHLORIDES AND COPPER BROMIDES AT A REACTION TEMPERATURE BETWEEN 0* AND 50*C.
Claim 2
Independent Claim
83 words
A METHOD WHICH COMPRISES MAKING A HALOETHYLBENZENE COMPOUND BY INTERACTING A STYRENE COMPOUND IN LIQUID FORM AND SELECTED FROM THE GROUP CONSISTING OF STYRENEM NUCLEAR ALKYL STYRENES, AND NUCLEAR HALOGENATED DERIVATIVES OF THE STYRENE HYDROCARBONS JUST MENTIONED AND A HYDROGEN HALIDE SELECTED FROM THE GROUP CONSISTING OF HYDROGEN CHLORIDE AND HYDROGEN BROMIDE IN THE PRESENCE OF AN INSOLUBLE SOLID CATALYST CONTAINING A COPPER HALIDE SELECTED FROM THE GROUP CONSISTING OF COPPER CHLORIDES AND COPPER BROMIDES AT A REACTION TEMPERATURE BETWEEN 0* AND 50*C.
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) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |