US2494592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of treating synthetic polymers with phosphorus and sulfur and products obtained thereby
Assignee: Standard Oil Development Co
•
Filing: 1945-05-19
•
Granted: 1950-01-17
•
Expires: 1965-05-19
Abstract
No abstract record available.
Inventors
- 👤 William H Smyers
- 👤 David W Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:00
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C08; C08F; C08F8/00; C08F8/40; C08F2800/00; C08F2800/20; C10M2223/00; C10M2223/12; C10M2225/00; C10M2225/02; C10M2225/04; C10M2225/041; C10N; C10N2010/00; C10N2010/06; C10N2010/08; C10N2010/14; C10N2010/16; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
PROCESS WHICH COMPRISES REACTING A COPOLYMER OF ABOUT 15 TO 40% BY WEIGHT OF A POLYMERIZABLE MONO-OLEFINIC AROMATIC COMPOUND CONTAINING 8 TO 13 CARBON ATOMS OF WHICH 6 TO 10 ARE PART OF THE AROMATIC NUCLEUS AND OF ABOUT 85 TO 60% OF AN ALIPHATIC MONO-OLEFIN OF 3 TO 8 CARBON ATOMS, SAID COPOLYMER HAVING A MOLECULAR WEIGHT OF ABOUT 1000 TO 100,000, WITH ABOUT 0.1 TO 5% BY WEIGHT OF A REAGENT COMPRISING PHOSPHORUS AND ALSO COMPRISING SULFUR, AT A REACTION TEMPERATURE BETWEEN ABOUT ROOM TEMPERATURE AND 250*C., TO INCORPORATE A SUBSTANTIAL AMOUNT OF BOTH PHOSPHORUS AND SULFUR INTO THE COPOLYMER.
Claim 2
Dependent Claim
102 words
PROCESS WHICH COMPRISES REACTING A COPOLYMER OF ABOUT 15 TO 40% BY WEIGHT OF A POLYMERIZABLE MONO-OLEFINIC AROMATIC COMPOUND CONTAINING 8 TO 13 CARBON ATOMS OF WHICH 6 TO 10 ARE PART OF THE AROMATIC NUCLEUS AND OF ABOUT 85 TO 60% OF AN ALIPHATIC MONO-OLEFIN OF 3 TO 8 CARBON ATOMS, SAID COPOLYMER HAVING A MOLECULAR WEIGHT OF ABOUT 1000 TO 100,000, WITH ABOUT 0.1 TO 5% BY WEIGHT OF A REAGENT COMPRISING PHOSPHORUS AND ALSO COMPRISING SULFUR, AT A REACTION TEMPERATURE BETWEEN ABOUT ROOM TEMPERATURE AND 250*C., TO INCORPORATE A SUBSTANTIAL AMOUNT OF BOTH PHOSPHORUS AND SULFUR INTO THE COPOLYMER.
References Cited (Backward Citations)
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Cited
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US2316085A
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USRE22464E
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-16 | 1953-07-18 | 1954-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-16 | 1957-07-18 | 1958-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-16 | 1961-07-18 | 1962-01-17 | $7700.00 | Window Closed / Lapsed |