US3170907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of cis-1, 4 polybutadiene with a nickel carboxylic acid salt-boron trifluoride etherate-aluminum trialkyl catalyst
Assignee: Bridgestone Corp
•
Filing: 1960-12-28
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Granted: 1965-02-23
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Expires: 1980-12-28
Abstract
No abstract record available.
Inventors
- 👤 Ueda Kenichi
- 👤 Onishi Akira
- 👤 Yoshimoto Toshio
- 👤 Hosono Junichi
- 👤 Maeda Katsuhiko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:02
CPC Classifications
C; C08; C08F; C08F136/00; C08F136/02; C08F136/04; C08F136/06; C08F236/00; C08F236/02; C08F236/04; C08F236/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A PROCESS FOR MANUFACTURING CIS-1,4 POLYBUTADIENE, WHICH COMPRISES: POLYMERIZING BUTADIENE IN THE PRESENCE OF HYDROCARBON DILUENT, AT A TEMPERATURE BETWEEN ABOUT -30*C. AND ABOUT 150*C., UNDER A PRESSURE SUFFICIENT TO MAINTAIN THE REACTION SYSTEM IN LIQUID PHASE AND UNDER AN INERT ATMOSPHERE TO A SOLID POLYMER HAVING AT LEAST 70% CIS-1,4 STRUCTURE BY CONTACTING BUTADIENE WITH A CATALYST OBTAIED BY EFFECTING REACTION THROUGH MIXING AT A CONTROLLED TEMPERATURE THE THREE COMPONENTS CONSISTING OF (A) AN ORGANIC CARBOXYLIC ACID SALT OF NICKEL OF THE FORMULA
Claim 2
Dependent Claim
84 words
A PROCESS FOR MANUFACTURING CIS-1,4 POLYBUTADIENE, WHICH COMPRISES: POLYMERIZING BUTADIENE IN THE PRESENCE OF HYDROCARBON DILUENT, AT A TEMPERATURE BETWEEN ABOUT -30*C. AND ABOUT 150*C., UNDER A PRESSURE SUFFICIENT TO MAINTAIN THE REACTION SYSTEM IN LIQUID PHASE AND UNDER AN INERT ATMOSPHERE TO A SOLID POLYMER HAVING AT LEAST 70% CIS-1,4 STRUCTURE BY CONTACTING BUTADIENE WITH A CATALYST OBTAIED BY EFFECTING REACTION THROUGH MIXING AT A CONTROLLED TEMPERATURE THE THREE COMPONENTS CONSISTING OF (A) AN ORGANIC CARBOXYLIC ACID SALT OF NICKEL OF THE 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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |