Patent US3028439A successfully refreshed from Google Patents.
US3028439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of 1, 2, 3-trichloropropene
Assignee: Union Carbide Corp
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Filing: 1960-03-23
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Granted: 1962-04-03
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Expires: 1980-03-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Louis F Theiling
- 👤 Joseph F Lacount
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:46
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN THE DEHYDROCHLORINATION OF 1,2,2,3-TETRACHLOROPROPANE TO OBTAIN 1,2,3-TRICHLOROPROPENE IN THE PRESENCE OF AN AQUEOUS SOLUTION OF HYDROXIDES SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HYDROXIDES AND ALKALINE EARTH METAL HYDROXIDES, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT SAID DEHYDROCHLORINATION IN THE PRESENCE OF AN EMULSIFYING AGENT HAVING A MOLECULAR WEIGHT OF 264 TO 4000 SAID EMULSIFYING AGENT BEING SELECTED FROM THE GROUP CONSISTING OF SULFATES OF ALCOHOLS WHICH HAVE FROM 8 TO 17 CARBON ATOMS, PHOSPHATES OF ALCOHOLS WHICH HAVE FROM 8 TO 17 CARBON ATOMS, ETHYLENE OXIDE ADDUCTS OF NONYL PHENOL, ETHYLENE OXIDE ADDUCTS OF 2,6,8TRIMETHYL-4-NONANOL AND ETHYLENE OXIDE-PROPYLENE OXIDE ADDUCTS OF BUTANOL.
Claim 2
Dependent Claim
104 words
IN THE DEHYDROCHLORINATION OF 1,2,2,3-TETRACHLOROPROPANE TO OBTAIN 1,2,3-TRICHLOROPROPENE IN THE PRESENCE OF AN AQUEOUS SOLUTION OF HYDROXIDES SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HYDROXIDES AND ALKALINE EARTH METAL HYDROXIDES, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT SAID DEHYDROCHLORINATION IN THE PRESENCE OF AN EMULSIFYING AGENT HAVING A MOLECULAR WEIGHT OF 264 TO 4000 SAID EMULSIFYING AGENT BEING SELECTED FROM THE GROUP CONSISTING OF SULFATES OF ALCOHOLS WHICH HAVE FROM 8 TO 17 CARBON ATOMS, PHOSPHATES OF ALCOHOLS WHICH HAVE FROM 8 TO 17 CARBON ATOMS, ETHYLENE OXIDE ADDUCTS OF NONYL PHENOL, ETHYLENE OXIDE ADDUCTS OF 2,6,8TRIMETHYL-4-NONANOL AND ETHYLENE OXIDE-PROPYLENE OXIDE ADDUCTS OF BUTANOL.
References Cited (Backward Citations)
US2322258A
Cited
US2543648A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |