US3245976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing 1, 4-cis-butadiene high polymers
Assignee: Snam SpA
•
Filing: 1962-07-09
•
Granted: 1966-04-12
•
Expires: 1982-07-09
Abstract
No abstract record available.
Inventors
- 👤 Marconi Walter
- 👤 Mazzei Alessandro
- 👤 Beranger Alessandro
- 👤 Araldi Mario
- 👤 Malde Marcello De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:45
CPC Classifications
C; C08; C08F; C08F136/00; C08F136/02; C08F136/04; C08F136/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
54 words
A PROCESS FOR POLYMERIZING BUTADIENE TO 1,4-CIS HIGH POLYMERS COMPRISING CONTACTING BUTADIENE WITH A MULTI-COMPONENT CATALYST SYSTEM INCLUDING: A. A COMPOUND SELECTED FROM THE GROUP CONSISTING OF TITANIUM TETRAIODIDE, ACETYLACETONATE OF DIVALENT COBALT AND ACETYL-ACETONATE OF TRIVALENT COBALT; AND B. A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A COMPOUND HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
54 words
A PROCESS FOR POLYMERIZING BUTADIENE TO 1,4-CIS HIGH POLYMERS COMPRISING CONTACTING BUTADIENE WITH A MULTI-COMPONENT CATALYST SYSTEM INCLUDING: A. A COMPOUND SELECTED FROM THE GROUP CONSISTING OF TITANIUM TETRAIODIDE, ACETYLACETONATE OF DIVALENT COBALT AND ACETYL-ACETONATE OF TRIVALENT COBALT; AND B. A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A COMPOUND HAVING THE GENERAL FORMULA
Claim 3
Dependent Claim
48 words
A PROCESS FOR POLYMERIZING BUTADIENE TO 1,4-CIS HIGH POLYMERS COMPRISING CONTACTING BUTADIENE WITH A MULTICOMPONENT CATALYST SYSTEM INCLUDING: A. A COMPOUND SELECTED FROM THE GROUP CONSISTING OF DICHLORO DIPROPOXY TITANATE AND TITANIUM TETRACHLORIDE; B. A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A COMPOUND HAVING THE GENERAL FORMULA
Claim 4
Dependent Claim
48 words
A PROCESS FOR POLYMERIZING BUTADIENE TO 1,4-CIS HIGH POLYMERS COMPRISING CONTACTING BUTADIENE WITH A MULTICOMPONENT CATALYST SYSTEM INCLUDING: A. A COMPOUND SELECTED FROM THE GROUP CONSISTING OF DICHLORO DIPROPOXY TITANATE AND TITANIUM TETRACHLORIDE; B. A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A COMPOUND HAVING THE GENERAL FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |