Patent US3830855A successfully refreshed from Google Patents.
US3830855A
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US
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Process for producing conjugated diene polymers
Assignee: Mitsubishi Chemical Corp
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Filing: 1972-07-31
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Granted: 1974-08-20
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Expires: 1992-07-31
Abstract
Abstract COMJUGATED DIENE POLYMERS ARE PRODUCED BY REACTING FROM 0.5 TO 2 MOLES OF A HALOALKYLENEOXIDE WITH ONE MOLE OF A LIVING POLYMER PREPARED BY REACTING A CONJUGATED DIOLEFIN OR A MIXTURE OF THE CONJUGATED DIENE WITH A VINYL COMPOUND HAVING THE FORMULA CH2-CR1R2, WHEREIN R1 REPRESENTS A HYDROGEN ATOM OR AN ALKYL GROUP AND R2 REPRESENTS AN ARYL GROUP OR A PYRIDYL GROUP IN THE AND R2 REPRESENTS AN ARYL GROUP OR A PYRIDYL GROUP IN THE PRESENCE OF AN ALIALI METAL OR AN ORGANOALKALI METAL COMPOUND.
Inventors
- 👤 J Inomata
- 👤 S Hino
- 👤 T Tani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:47
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/52; C08C; C08C19/00; C08C19/30; C08C19/42; C08C19/44; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/69; C08G65/00; C08G65/02; C08G65/04; C08G65/22; C08G65/223
Claims Analysis
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References Cited (Backward Citations)
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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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |