US4511730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbamates of beta-hydroxyethylsulfoxides
Assignee: BP Corp North America Inc
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Filing: 1982-08-17
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Granted: 1985-04-16
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Expires: 2002-08-17
Abstract
Abstract This invention relates to carbamates of beta-hydroxyethylsulfoxides which are useful as cosurfactants in enhanced oil recovery, surfactants and biocides, and as hydraulic fluids when of sufficiently low molecular weight.
Inventors
- 👤 Ellis K. Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:32
CPC Classifications
C; C07; C07C; C07C317/00; C07C317/16; C07C317/18; C09; C09K; C09K8/00; C09K8/58; C09K8/584; C10; C10M; C10M105/00; C10M105/72; C09K23/00; C09K23/08; C10M2219/00; C10M2219/04; C10M2219/0406; C10N; C10N2040/00; C10N2040/08; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936; Y10S507/937; Y10S507/938; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
89 words
Carbamates of beta-hydroxyethylsulfoxides of the structural formula ##STR10## wherein R, R' and R" are individually selected from the group consisting of radicals derived from benzene, biphenyl, naphthalene, anthracene, and phenanthrene; alkyl moieties of 1 to 22 carbon atoms; and aralkyl moieties, alkylated aryl moieties and cycloalkyl moieties containing 4 to 40 carbon atoms, the ring radicals of said moieties being selected from the group consisting of phenyl, biphenyl, and cyclohexyl radicals wherein R' can be substituted with nitro, halogen, cyano and carboalkoxy moieties of 1 to 12 carbon atoms.
Claim 2
Dependent Claim
89 words
Carbamates of beta-hydroxyethylsulfoxides of the structural formula ##STR10## wherein R, R' and R" are individually selected from the group consisting of radicals derived from benzene, biphenyl, naphthalene, anthracene, and phenanthrene; alkyl moieties of 1 to 22 carbon atoms; and aralkyl moieties, alkylated aryl moieties and cycloalkyl moieties containing 4 to 40 carbon atoms, the ring radicals of said moieties being selected from the group consisting of phenyl, biphenyl, and cyclohexyl radicals wherein R' can be substituted with nitro, halogen, cyano and carboalkoxy moieties of 1 to 12 carbon atoms.
Claim 3
Dependent Claim
9 words
The composition of claim 1 wherein R" is phenyl.
Claim 4
Dependent Claim
9 words
The composition of claim 1 wherein R" is 2,4-tolylene.
Claim 5
Dependent Claim
9 words
The composition of claim 1 wherein R" is n-octadecyl.
Claim 6
Dependent Claim
24 words
The composition of claim 1 wherein R" is selected from the group consisting of methyl, ethyl, n-octyl, n-dodecyl, tert-octyl, tert-dodecyl, phenyl, and tolyl moieties.
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) | 1988-04-15 | 1988-10-15 | 1989-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-15 | 1992-10-15 | 1993-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-15 | 1996-10-15 | 1997-04-16 | $7700.00 | Window Closed / Lapsed |