US2989571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogenation process
Assignee: PPG Industries Inc
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Filing: 1958-05-02
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Granted: 1961-06-20
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Expires: 1978-05-02
Abstract
No abstract record available.
Inventors
- 👤 Douglas H Eisenlohr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:06
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/10; B; B01; B01J; B01J19/00; B01J19/26; C07B; C07B39/00; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00094; B01J2219/18; B01J2219/182
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
IN A METHOD OF MANUFACTURING HALOGENATED HYDROCARBONS BY THE GAS PHASE HALOGENATION OF HALOGENATABLE ORGANIC MATERIALS WITH ELEMENTAL HALOGEN, THE IMPROVEMENT WHICH COMPRISES CONDUCTING THE HALOGENATION IN A REACTION ZONE MAINTAINED AT A GAS PHASE HALOGENATION TEMPERATURE AND HAVING A FIRST AND SECOND SECTION, INTRODUCING ELEMENTAL HALOGEN INTO THE FIRST SECTION, ADDING THE ORGANIC MATERIAL TO BE HALOGENATED TO THE GASES AT HALOGENATION TEMPERATURE IN THE SECOND SECTION THEREBY DILUTING THE HALOGENATABLE MATERIAL WITH GASES IN THE SECOND SECTION, MIXING AND DILUTING IN THE FIRST SECTION THE CHLORINE WITH GAS MIXTURE AT HALOGENATION TEMPERATURE SUPPLIED FROM THE SECOND SECTION, DISCHARGING THE GAS MIXTURE FROM THE FIRST SECTION INTO THE SECOND SECTION THUS PROVIDING FOR THE GASEOUS MIXTURE IN THE SECOND SECTION WHICH IS SUPPLIED TO THE FIRST SECTION AND WITHDRAWING FROM A LOCATION IN THE SECOND SECTION OF THE REACTION ZONE REMOTE FROM WHERE SAID ORGANIC MATERIAL IS ADDED A PORTION OF THE GAS MIXTURE.
Claim 2
Dependent Claim
155 words
IN A METHOD OF MANUFACTURING HALOGENATED HYDROCARBONS BY THE GAS PHASE HALOGENATION OF HALOGENATABLE ORGANIC MATERIALS WITH ELEMENTAL HALOGEN, THE IMPROVEMENT WHICH COMPRISES CONDUCTING THE HALOGENATION IN A REACTION ZONE MAINTAINED AT A GAS PHASE HALOGENATION TEMPERATURE AND HAVING A FIRST AND SECOND SECTION, INTRODUCING ELEMENTAL HALOGEN INTO THE FIRST SECTION, ADDING THE ORGANIC MATERIAL TO BE HALOGENATED TO THE GASES AT HALOGENATION TEMPERATURE IN THE SECOND SECTION THEREBY DILUTING THE HALOGENATABLE MATERIAL WITH GASES IN THE SECOND SECTION, MIXING AND DILUTING IN THE FIRST SECTION THE CHLORINE WITH GAS MIXTURE AT HALOGENATION TEMPERATURE SUPPLIED FROM THE SECOND SECTION, DISCHARGING THE GAS MIXTURE FROM THE FIRST SECTION INTO THE SECOND SECTION THUS PROVIDING FOR THE GASEOUS MIXTURE IN THE SECOND SECTION WHICH IS SUPPLIED TO THE FIRST SECTION AND WITHDRAWING FROM A LOCATION IN THE SECOND SECTION OF THE REACTION ZONE REMOTE FROM WHERE SAID ORGANIC MATERIAL IS ADDED A PORTION OF THE GAS MIXTURE.
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) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |