US2951875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of high molecular weight mercaptans
Assignee: Pennwalt Corp
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Filing: 1958-04-10
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Granted: 1960-09-06
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Expires: 1978-04-10
Abstract
No abstract record available.
Inventors
- 👤 Loev Bernard
- 👤 Roland H Goshorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:52
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/34; C07; C07C; C07C319/00; C07C319/02; C07C319/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A PROCESS FOR THE PRODUCTION OF HIGH MOLECULAR WEIGHT ALIPHATIC MERCAPTANS OF FROM 8 TO 18 CARBON ATOMS IN HIGH YIELDS AND CONVERSIONS UNDER MILD CONDITIONS OF TEMPERATURE AND PRESSURE WHICH COMPRISES PASSING A MIXTURE OF HYDROGEN SULFIDE AND PROPYLENE HOMOPOLYMER THROUGH A REACTION ZONE CONTAINING AN ALUMINA PROMOTED SILICA CATALYST AT A PRESSURE OF FROM ABOUT 50 TO ABOUT 350 LBS./IN.2 GAGE AND AT A TEMPERATURE OF FROM ABOUT 25*C. TO ABOUT 100*C.
Claim 2
Dependent Claim
74 words
A PROCESS FOR THE PRODUCTION OF HIGH MOLECULAR WEIGHT ALIPHATIC MERCAPTANS OF FROM 8 TO 18 CARBON ATOMS IN HIGH YIELDS AND CONVERSIONS UNDER MILD CONDITIONS OF TEMPERATURE AND PRESSURE WHICH COMPRISES PASSING A MIXTURE OF HYDROGEN SULFIDE AND PROPYLENE HOMOPOLYMER THROUGH A REACTION ZONE CONTAINING AN ALUMINA PROMOTED SILICA CATALYST AT A PRESSURE OF FROM ABOUT 50 TO ABOUT 350 LBS./IN.2 GAGE AND AT A TEMPERATURE OF FROM ABOUT 25*C. TO ABOUT 100*C.
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) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |