US3207741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of 1, 4-cis-polydienes with a group viii metal salt-monoolefinic alcohol-group ii or iii organometal catalyst
Assignee: Huels AG
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Filing: 1961-06-19
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Granted: 1965-09-21
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Expires: 1981-06-19
Abstract
No abstract record available.
Inventors
- 👤 Schafer Johannes
- 👤 Engel Frederico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:44
CPC Classifications
C; C08; C08F; C08F136/00; C08F136/02; C08F136/04; C08F136/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
68 words
A CATALYST COMPOSITION COMPRISING AN ORGANO-METALLIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKYL-ALUMINUMHALIDE AND ARYL-ALUMINUM HALIDE, AND A MIXTURE OF A SALT OF METAL SELECTED FROM THE GROUP CONSISTING OF COBALT AND NICKEL WITH A MONO-OLEFINIC ALCOHOL, CONTAINING FROM 3 TO 6 CARBON ATOMS, THE MOL RATIO OF SAID ORGANO-METALLIC COMPOUND TO SAID MIXTURE OF METAL SALT WITH A MONO-OLEFINIC ALCOHOL BEING ABOUT 1:1 TO 1:10,000, RESPECTIVELY.
Claim 2
Dependent Claim
68 words
A CATALYST COMPOSITION COMPRISING AN ORGANO-METALLIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKYL-ALUMINUMHALIDE AND ARYL-ALUMINUM HALIDE, AND A MIXTURE OF A SALT OF METAL SELECTED FROM THE GROUP CONSISTING OF COBALT AND NICKEL WITH A MONO-OLEFINIC ALCOHOL, CONTAINING FROM 3 TO 6 CARBON ATOMS, THE MOL RATIO OF SAID ORGANO-METALLIC COMPOUND TO SAID MIXTURE OF METAL SALT WITH A MONO-OLEFINIC ALCOHOL BEING ABOUT 1:1 TO 1:10,000, RESPECTIVELY.
Claim 3
Dependent Claim
38 words
A PROCESS FOR POLYMERIZING A CONJUGATED DIENE HAVING FROM 4 TO 8 CARABON ATOMS TO POLYMERS HAVING A 1,4-CIS CONFIGURATION, WHICH COMPRISES THE STEP OF CONTACTING SAID DIENE UNDER POLYMERIZING CONDITIONS WITH THE CATALYST COMPOSITION OF CLAIM 1.
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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |