US3067184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of ethylene-butene copolymer
Assignee: Phillips Petroleum Co
•
Filing: 1957-12-20
•
Granted: 1962-12-04
•
Expires: 1977-12-20
Abstract
No abstract record available.
Inventors
- 👤 Martin R Cines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:01
CPC Classifications
C; C08; C08F; C08F10/00; B; B01; B01J; B01J23/00; B01J23/70; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/10; C08F8/00; C08F8/18; C08F8/20; C08F8/34; B01J37/00; B01J37/02; B01J37/0201; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/755; C08F110/00; C08F110/02; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A PROCESS WHICH COMPRISES POLYMERIZING ETHYLENE, IN A POLYMERIZATION ZONE, TO FORM BUTENES; RECOVERING, FROM SAID POLYMERIZATION ZONE, A MIXTURE COMPRISING 1BUTENE, 2-BUTENE, AND ETHYLENE; PASSING SAID MIXTURE TO A COPOLYMERIZATION ZONE MAINTAINED UNDER COPOLYMERIZATION CONDITIONS AND THEREBY CAUSING ETHYLENE IN SAID MIXTURE TO COPOLYMERIZE WITH 1-BUTENE IN SAID MIXTURE TO FORM A NORMALLY SOLID COPOLYMER AS A PRODUCT OF THE PROCESS; COMPRISING 2-BUTENE; AND SUPPLYING SAID FRACTION TO TION COMPRISING 2-BUTENE; AND SUPPLYING SAID FRACTION TO SAID POLYMERIZATION ZONE, WHEREBY FORMATION OF 2-BUTENE IN SAID POLYMERIZATION ZONE IS SUPPRESSED.
Claim 2
Dependent Claim
90 words
A PROCESS WHICH COMPRISES POLYMERIZING ETHYLENE, IN A POLYMERIZATION ZONE, TO FORM BUTENES; RECOVERING, FROM SAID POLYMERIZATION ZONE, A MIXTURE COMPRISING 1BUTENE, 2-BUTENE, AND ETHYLENE; PASSING SAID MIXTURE TO A COPOLYMERIZATION ZONE MAINTAINED UNDER COPOLYMERIZATION CONDITIONS AND THEREBY CAUSING ETHYLENE IN SAID MIXTURE TO COPOLYMERIZE WITH 1-BUTENE IN SAID MIXTURE TO FORM A NORMALLY SOLID COPOLYMER AS A PRODUCT OF THE PROCESS; COMPRISING 2-BUTENE; AND SUPPLYING SAID FRACTION TO TION COMPRISING 2-BUTENE; AND SUPPLYING SAID FRACTION TO SAID POLYMERIZATION ZONE, WHEREBY FORMATION OF 2-BUTENE IN SAID POLYMERIZATION ZONE IS SUPPRESSED.
References Cited (Backward Citations)
BE538721A
Cited
US2380358A
Cited
US2381198A
Cited
US2691647A
Cited
US2825721A
Cited
US2889314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |