US3288768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing amorphous linear copolymers
Assignee: JNC Corp
•
Filing: 1963-04-02
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Granted: 1966-11-29
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Expires: 1983-04-02
Abstract
No abstract record available.
Inventors
- 👤 Shiga Mamoru
- 👤 Fujikake Yasuo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:35
CPC Classifications
C; C07; C07D; C07D265/00; C07D265/28; C07D265/34; C07D265/36; C08; C08F; C08F210/00; Y; Y10; Y10S; Y10S526/00; Y10S526/907
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A METHOD FOR PRODUCING AMORPHOUS LINEAR COPOLYMERS OF ETHYLENE WITH ALPHA-OLEFINS HAVING FROM THREE TO FIVE CARBON ATOMS CONTAINING PRE-DETERMINED HIGH PROPORTIONS OF ALPHA-OLEFIN IN THE FINAL COPOLYMER, COMPRISING EFFECTING THE COPOLYMERIZATION IN THE PRESENCE OF A CATALYST COMPRISING A FIRST COMPONENT OF A VANADIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF VANADIUM TETRACHLORIDE, VANADIUM OXY-TRICHLORIDE, VANADIUM TETRABROMIDE, AND VANADIUM OXY-TRIBROMIDE, A SECOND COMPONENT OF AN ALKYL ALUMINUM DIHALIDE HAVING THE GENERAL FORMULA RALX2, WHEREIN R IS AKYL AND X IS HALOGEN, AND A THIRD COMPONENT OF AN ALKYLALUMINUM ALKOXIDE OF THE GENERAL FORMULA R2AL(OR) WHEREIN R IS ALKYL AND OR IS AN ALKOXY GROUP, AND REGULATING THE AMOUNT OF SAID THIRD COMPONENT IN ACCORDANCE WITH THE PROPORTION OF ALPHA-OLEFIN SOUGHT IN THE FINAL COPOLYMER.
Claim 2
Independent Claim
125 words
A METHOD FOR PRODUCING AMORPHOUS LINEAR COPOLYMERS OF ETHYLENE WITH ALPHA-OLEFINS HAVING FROM THREE TO FIVE CARBON ATOMS CONTAINING PRE-DETERMINED HIGH PROPORTIONS OF ALPHA-OLEFIN IN THE FINAL COPOLYMER, COMPRISING EFFECTING THE COPOLYMERIZATION IN THE PRESENCE OF A CATALYST COMPRISING A FIRST COMPONENT OF A VANADIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF VANADIUM TETRACHLORIDE, VANADIUM OXY-TRICHLORIDE, VANADIUM TETRABROMIDE, AND VANADIUM OXY-TRIBROMIDE, A SECOND COMPONENT OF AN ALKYL ALUMINUM DIHALIDE HAVING THE GENERAL FORMULA RALX2, WHEREIN R IS AKYL AND X IS HALOGEN, AND A THIRD COMPONENT OF AN ALKYLALUMINUM ALKOXIDE OF THE GENERAL FORMULA R2AL(OR) WHEREIN R IS ALKYL AND OR IS AN ALKOXY GROUP, AND REGULATING THE AMOUNT OF SAID THIRD COMPONENT IN ACCORDANCE WITH THE PROPORTION OF ALPHA-OLEFIN SOUGHT IN THE FINAL COPOLYMER.
References Cited (Backward Citations)
US2956993A
Cited
GB881212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |