Patent US2284434A successfully refreshed from Google Patents.
Patent US3282978A successfully refreshed from Google Patents.
US3282978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing s-(2-hydroxyl) esters
Assignee: Standard Oil Co
•
Filing: 1962-07-19
•
Granted: 1966-11-01
•
Expires: 1982-07-19
Abstract
No abstract record available.
Inventors
- 👤 Edward A Swakon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:52
CPC Classifications
C; C07; C07C; C07C333/00; C07C333/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A METHOD OF PREPARING S-(2-HYDROXYL) ESTERS OF N,NDIHYDROCARBON-SUBSTITUTED MONOTHIOCARBAMIC ACIDS WHICH COMPRISES REACTING AN AMMONIUM SALT OF A N,N''-DIHYDROCARBON-SUBSTITUTED MONOTHIOLCARBAMIC ACID WITH AN OLEFIN OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, 2,3-EPOXY BUTANE, STYRENE OXIDE, 4-METHYL STYRENE OXIDE, OCTYLENE OXIDES AND CYCLOHEXENE OXIDE AT A TEMPERATURE IN THE RANGE OF 0 TO 300*C., WHEREIN SAID DIHYDROCARBON SUBSTITUENTS ARE SELECTED FROM THE CLASS CONSISTING OF DIETHYL, DIPROPYL, DIBUTYL, DIAMYL, DICYCLOHEXYL, DIPHENYL, DIBENZYL, METHYLPHENYL, AND METHYLCYCLOHEXYL HYDROCARBON SUBSTITUENTS ON THE NITROGEN OF THE RESPRCTIVE ESTER PRODUCT AND THE MONOTHIOLCARBAMIC ACID.
Claim 2
Independent Claim
92 words
A METHOD OF PREPARING S-(2-HYDROXYL) ESTERS OF N,NDIHYDROCARBON-SUBSTITUTED MONOTHIOCARBAMIC ACIDS WHICH COMPRISES REACTING AN AMMONIUM SALT OF A N,N''-DIHYDROCARBON-SUBSTITUTED MONOTHIOLCARBAMIC ACID WITH AN OLEFIN OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, 2,3-EPOXY BUTANE, STYRENE OXIDE, 4-METHYL STYRENE OXIDE, OCTYLENE OXIDES AND CYCLOHEXENE OXIDE AT A TEMPERATURE IN THE RANGE OF 0 TO 300*C., WHEREIN SAID DIHYDROCARBON SUBSTITUENTS ARE SELECTED FROM THE CLASS CONSISTING OF DIETHYL, DIPROPYL, DIBUTYL, DIAMYL, DICYCLOHEXYL, DIPHENYL, DIBENZYL, METHYLPHENYL, AND METHYLCYCLOHEXYL HYDROCARBON SUBSTITUENTS ON THE NITROGEN OF THE RESPRCTIVE ESTER PRODUCT AND THE MONOTHIOLCARBAMIC ACID.
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) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |