US3349148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization process
Assignee: Shell USA Inc
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Filing: 1964-05-08
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Granted: 1967-10-24
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Expires: 1984-05-08
Abstract
No abstract record available.
Inventors
- 👤 Warren V Bush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:56
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/20; C07C2/22; C08; C08F; C08F110/00; C08F110/14; C07C2527/00; C07C2527/06; C07C2527/125; C07C2527/138; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/942
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A PROCESS FOR HYDRIDE SHIFT POLYMERIZATION OF OLEFINS HAVING THE FORMULA R1CH=CHCHR2R3 WHERE R1 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, METHYL, AND ETHYL, R2 IS SELECTED FROM THE GROUP CONSISTING OF METHYL, ETHYL, AND PROPYL, AND R3 IS A NORMAL ALKYL GROUP HAVING FROM 1 TO ABOUT 20 CARBON ATOMS WHICH COMPRISES REACTING THE MONOMER AT A TEMPERATURE BELOW ABOUT 150* C. AND ABOVE ABOUT -50*C. IN PRESENCE OF A CATALYST HAVING THE CHEMICAL FORMULA MA(ALX4)N WHERE M IS A METAL, X IS SELECTED FROM A GROUP CONSISTING OF CHLORINE, BROMINE AND IODINE, AND N IS A WHOLE NUMBER EQUAL TO THE VALENCE OF M, AND RECOVERING A POLYMERIC PRODUCT WITH A NUMBER AVERAGE MOLECULAR WEIGHT OF AT LEAST ABOUT 300.
Claim 2
Dependent Claim
123 words
A PROCESS FOR HYDRIDE SHIFT POLYMERIZATION OF OLEFINS HAVING THE FORMULA R1CH=CHCHR2R3 WHERE R1 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, METHYL, AND ETHYL, R2 IS SELECTED FROM THE GROUP CONSISTING OF METHYL, ETHYL, AND PROPYL, AND R3 IS A NORMAL ALKYL GROUP HAVING FROM 1 TO ABOUT 20 CARBON ATOMS WHICH COMPRISES REACTING THE MONOMER AT A TEMPERATURE BELOW ABOUT 150* C. AND ABOVE ABOUT -50*C. IN PRESENCE OF A CATALYST HAVING THE CHEMICAL FORMULA MA(ALX4)N WHERE M IS A METAL, X IS SELECTED FROM A GROUP CONSISTING OF CHLORINE, BROMINE AND IODINE, AND N IS A WHOLE NUMBER EQUAL TO THE VALENCE OF M, AND RECOVERING A POLYMERIC PRODUCT WITH A NUMBER AVERAGE MOLECULAR WEIGHT OF AT LEAST ABOUT 300.
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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |