Patent US3116272A successfully refreshed from Google Patents.
US3116272A
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Polymerization of butadiene with a tii-air-organic hydroxy compound catalyst
Assignee: Polysar Ltd
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Filing: 1959-10-26
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Granted: 1963-12-31
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Expires: 1979-10-26
Abstract
No abstract record available.
Inventors
- 👤 Raymond A Stewart
- 👤 Lloyd A Mcleod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:58
CPC Classifications
C; C08; C08F; C08F136/00; C08F136/02; C08F136/04; C08F136/08; C08F136/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
THE PROCESS OF PRODUCING A POLYMER OF BUTADIENE IN WHICH THE UNITS ARE PREDOMINANTLY IN THE CIS-1,4 CONFIGURATION WHICH COMPRISES POLYMERIZING BUTADIENE-1,3 AT A TEMPERATURE BETWEEN -75*C. AND +100*C. IN THE PRESENCE OF A CATALYST SYSTEM FORMED BY ADMIXING AN IODIDE OF TITANIUM IN WHICH THE TITANIUM IS IN ITS MAXIMUM VALENCE STATE, AN ORGANO-METALLIC COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
59 words
THE PROCESS OF PRODUCING A POLYMER OF BUTADIENE IN WHICH THE UNITS ARE PREDOMINANTLY IN THE CIS-1,4 CONFIGURATION WHICH COMPRISES POLYMERIZING BUTADIENE-1,3 AT A TEMPERATURE BETWEEN -75*C. AND +100*C. IN THE PRESENCE OF A CATALYST SYSTEM FORMED BY ADMIXING AN IODIDE OF TITANIUM IN WHICH THE TITANIUM IS IN ITS MAXIMUM VALENCE STATE, AN ORGANO-METALLIC COMPOUND HAVING THE FORMULA
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) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |