Patent US2837587A successfully refreshed from Google Patents.
US2837587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of olefin-rich feed prior to polymerization
Assignee: Phillips Petroleum Co
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Filing: 1954-08-20
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Granted: 1958-06-03
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Expires: 1974-08-20
Abstract
No abstract record available.
Inventors
- 👤 Hogan John Paul
- 👤 Robert L Banks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:52
CPC Classifications
C; C07; C07C; C07C11/00; C07C11/02; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/10; C07C7/00; C07C7/005; C07C7/12; C07C7/148; C07C7/14833; C07C7/1485; C07C7/163; C07C7/167; C07C7/177; C07C2521/00; C07C2521/12; C07C2523/00; C07C2523/70; C07C2523/72; C07C2523/74; C07C2523/755; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/903; Y10S585/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A PROCESS FOR POLYMERIZING A MORMALLY GASEOUS OLEFIN IN A FEED CONTAINING IMPURITIES COMPRISING MINOR AMOUNTS OF ACETYLENE AND CARBON MONOXIDE, AND AT LEAST ONE MOL OF HYDROGEN PER MOL OF ACETYLENE IN CONTACT WITH A NICKEL OXIDE CATALYST WHICH HAS BEEN ACTIVATED BY HEATING IN AN OXIDIZING ATOMOSPHERE AT A TEMPERATURE IN THE RANGE OF 700 TO 1300*F., WHICH COMPRISES CONTACTING SAID FEED WITH A REDUCED COPPER OXIDE CATALYST SO AS TO REMOVE ACETYLENE FROM THE FEED; THEREAFTER CONTACTING THE RESULTING FEED WITH HOPCALITE SO AS TO REMOVE CARBON MONOXIDE FROM THE FEED; CONTACTING THE PURIFIED FEED WITH SAID NICKEL OXIDE CATALYST UNDER POLYMERIZING CONDITIONS; AND RECOVERING LIQUID POLYMER FROM THE PROCESS.
Claim 2
Dependent Claim
113 words
A PROCESS FOR POLYMERIZING A MORMALLY GASEOUS OLEFIN IN A FEED CONTAINING IMPURITIES COMPRISING MINOR AMOUNTS OF ACETYLENE AND CARBON MONOXIDE, AND AT LEAST ONE MOL OF HYDROGEN PER MOL OF ACETYLENE IN CONTACT WITH A NICKEL OXIDE CATALYST WHICH HAS BEEN ACTIVATED BY HEATING IN AN OXIDIZING ATOMOSPHERE AT A TEMPERATURE IN THE RANGE OF 700 TO 1300*F., WHICH COMPRISES CONTACTING SAID FEED WITH A REDUCED COPPER OXIDE CATALYST SO AS TO REMOVE ACETYLENE FROM THE FEED; THEREAFTER CONTACTING THE RESULTING FEED WITH HOPCALITE SO AS TO REMOVE CARBON MONOXIDE FROM THE FEED; CONTACTING THE PURIFIED FEED WITH SAID NICKEL OXIDE CATALYST UNDER POLYMERIZING CONDITIONS; AND RECOVERING LIQUID POLYMER FROM THE PROCESS.
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) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |