Patent US4444419A successfully refreshed from Google Patents.
US2829164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making pentachloroaniline and certain new n-substituted pentachloroanilines and alkyl tetrachloro analogs
Assignee: Dow Chemical Co
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Filing: 1955-09-13
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Granted: 1958-04-01
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Expires: 1975-09-13
Abstract
No abstract record available.
Inventors
- 👤 Albert L Rocklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:49
CPC Classifications
C; C10; C10M; C10M133/00; C10M133/02; C10M133/04; C10M133/12; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
175 words
THE METHOD WHICH COMPRISES HEATING TO A REACTION TEMPERATURE IN THE RANGE FROM 75*C. TO 250*C. A MIXTURE CONSISTING ESSENTIALLY OF A POLYCHLOROHYDROCARBON COMPOUND FROM THE GROUP CONSISTING OF HEXACHLOROBENZENE AND MONOALKYL PENTACHLOROBENZENES WHEREIN THE ALKYL GROUP CONTAINS FROM 1 TO 8 CARBON ATOMS, AND AT LEAST AN EQUIMOLAR AMOUNT OF A NITROGEN COMPOUND FROM THE GROUP CONSISTING OF AMMONIA, MONO- AND DIALKYLAMINES HAVING FROM 1 TO 8 CARBON ATOMS IN EACH ALKYL GROUP, ALLYLAMINE, MONO- AND DIALKANOLAMINES HAVING FROM 2 TO 3 CARBON ATOMS IN EACH ALKANOL GROUP, ALKANOLAMINOALKYLAMINES HAVING FROM 2 TO 3 CARBON ATOMS IN THE ALKANOL GROUP AND FROM 2 TO 3 CARBON ATOMS IN THE ALKYLAMINE GOUP, PLYMETHYLENE DIAMMINES HAVING FROM 2 TO 6 CARBON ATOMS, BENZYLAMINE AND PHENETHYLAMINES, THE REACTION BEING CARRIED OUT AT A PRESSURE SUFFICIENT TO PREVENT LOSS BY VAPORIZATION OF THE NITROGEN COMPOUND WHILE MAINTAINING A REACTION TEMPERATURE IN SAID RANGE UNTIL A SIGNIFICANT CONVERSION OF THE POLYCHLOROHYDROCARBON TO A POLYCHLORO-ARYLAMINE COMPOUND OCCURS, SUBSTANTIALLY FREEING THE REACTION MIXTURE FROM UNCHANGED REAGENTS, AND RECOVERING THE POLYCHLORO-ARYLAMINE COMPOUND.
Claim 2
Independent Claim
175 words
THE METHOD WHICH COMPRISES HEATING TO A REACTION TEMPERATURE IN THE RANGE FROM 75*C. TO 250*C. A MIXTURE CONSISTING ESSENTIALLY OF A POLYCHLOROHYDROCARBON COMPOUND FROM THE GROUP CONSISTING OF HEXACHLOROBENZENE AND MONOALKYL PENTACHLOROBENZENES WHEREIN THE ALKYL GROUP CONTAINS FROM 1 TO 8 CARBON ATOMS, AND AT LEAST AN EQUIMOLAR AMOUNT OF A NITROGEN COMPOUND FROM THE GROUP CONSISTING OF AMMONIA, MONO- AND DIALKYLAMINES HAVING FROM 1 TO 8 CARBON ATOMS IN EACH ALKYL GROUP, ALLYLAMINE, MONO- AND DIALKANOLAMINES HAVING FROM 2 TO 3 CARBON ATOMS IN EACH ALKANOL GROUP, ALKANOLAMINOALKYLAMINES HAVING FROM 2 TO 3 CARBON ATOMS IN THE ALKANOL GROUP AND FROM 2 TO 3 CARBON ATOMS IN THE ALKYLAMINE GOUP, PLYMETHYLENE DIAMMINES HAVING FROM 2 TO 6 CARBON ATOMS, BENZYLAMINE AND PHENETHYLAMINES, THE REACTION BEING CARRIED OUT AT A PRESSURE SUFFICIENT TO PREVENT LOSS BY VAPORIZATION OF THE NITROGEN COMPOUND WHILE MAINTAINING A REACTION TEMPERATURE IN SAID RANGE UNTIL A SIGNIFICANT CONVERSION OF THE POLYCHLOROHYDROCARBON TO A POLYCHLORO-ARYLAMINE COMPOUND OCCURS, SUBSTANTIALLY FREEING THE REACTION MIXTURE FROM UNCHANGED REAGENTS, AND RECOVERING THE POLYCHLORO-ARYLAMINE COMPOUND.
Claim 3
Dependent Claim
143 words
AS A NEW CHEMICAL COMPOUND, A MEMBER OF THE GROUP CONSISTING OF N-PENTACHLOROPHENYL MONO- AND DIALKYLAMINES IN WHICH EACH ALKYL GROUP CONTAINS FROM 1 TO 8 CARBON ATOMS AND THERE ARE AT LEAST 2 ALKYL CARBON ATOMS IN THE COMPOUND, N-PENTACHLOROPHENYL ALLYLAMINE, N-PENTACHLOROPHENYL MONO- AND DIALKANOLAMINES IN WHICH EACH ALKANOL GROUP HAS FROM 2 TO 3 CARBON ATOMS, NPENTACHLOROPHENYL ALKANOLAMINOALKYLAMINES IN WHICH EACH ALKANOL GROUP HAS FROM 2 TO 3 CARBON ATOMS AND EACH ALKYLAMINE GROUPS HAS FROM 2 TO 3 CARBON ATOMS, MONO-NPENTACHLOROPHENYL POLYMETHYLENE DIAMINES IN WHICH THE POLYMETHYLENE GROUP HAS FROM 2 TO 6 CARBON ATOMS, BIS(N-PENTACHLOROPHENYL) POLYMETHYLENE DIAMINES IN WHICH THE POLYMETHYLENE GROUP CONTAINS FROM 3 TO 6 CARBON ATOMS, N-PENTACHLOROPHENYL BENZYLAMINE, NPENTACHLOROPHENYL PHENETHYLAMINES, AND THE CORRESPONDING MONOALKYL TETRACHLOROPHENYL AMINE COMPOUNDS IN WHICH THE ALKYL GROUP IS ATTACHED TO THE BENZENE RING AND CONTAINS FROM 1 TO 8 CARBON ATOMS.
Claim 4
Dependent Claim
143 words
AS A NEW CHEMICAL COMPOUND, A MEMBER OF THE GROUP CONSISTING OF N-PENTACHLOROPHENYL MONO- AND DIALKYLAMINES IN WHICH EACH ALKYL GROUP CONTAINS FROM 1 TO 8 CARBON ATOMS AND THERE ARE AT LEAST 2 ALKYL CARBON ATOMS IN THE COMPOUND, N-PENTACHLOROPHENYL ALLYLAMINE, N-PENTACHLOROPHENYL MONO- AND DIALKANOLAMINES IN WHICH EACH ALKANOL GROUP HAS FROM 2 TO 3 CARBON ATOMS, NPENTACHLOROPHENYL ALKANOLAMINOALKYLAMINES IN WHICH EACH ALKANOL GROUP HAS FROM 2 TO 3 CARBON ATOMS AND EACH ALKYLAMINE GROUPS HAS FROM 2 TO 3 CARBON ATOMS, MONO-NPENTACHLOROPHENYL POLYMETHYLENE DIAMINES IN WHICH THE POLYMETHYLENE GROUP HAS FROM 2 TO 6 CARBON ATOMS, BIS(N-PENTACHLOROPHENYL) POLYMETHYLENE DIAMINES IN WHICH THE POLYMETHYLENE GROUP CONTAINS FROM 3 TO 6 CARBON ATOMS, N-PENTACHLOROPHENYL BENZYLAMINE, NPENTACHLOROPHENYL PHENETHYLAMINES, AND THE CORRESPONDING MONOALKYL TETRACHLOROPHENYL AMINE COMPOUNDS IN WHICH THE ALKYL GROUP IS ATTACHED TO THE BENZENE RING AND CONTAINS FROM 1 TO 8 CARBON ATOMS.
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) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |