Patent US3335120A successfully refreshed from Google Patents.
US3335120A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of solvent for olefin polymerization
Assignee: Eastman Kodak Co
•
Filing: 1960-04-01
•
Granted: 1967-08-08
•
Expires: 1980-04-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Hugh J Hagemeyer
- 👤 Marvin B Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:42
CPC Classifications
C; C08; C08J; C08J11/00; C08J11/02; B; B01; B01J; B01J38/00; C08F; C08F10/00; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584; Y10; Y10S; Y10S526/00; Y10S526/912
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
THE PROCESS FOR POLYMERIZING A-OLEFINIC HYDROCARBON TO SOLID POLYMER WHICH COMPRISES POLYMERIZING SAID HYDROCARBON IN A NORMALLY LIQUID HYDROCARBON SOLVENT USING AN IONIC CATALYST CONTAINING A TRANSITION METAL COMPOUND AND A COMPONENT SELECTED FROM THE GROUP CONSISTING OF METALS IN GROUPS I TO III OF THE PERIODIC TABLE AND ORGANO-METAL COMPOUNDS AND HYDRIDES OF GROUPS I TO III METALS, SAID CATALYST PRODUCING IMPURITIES SUBSTANTIALLY SOLUBLE IN SAID SOLVENT DURING SAID POLYMERIZATION, SEPARATING SOLVENT CONTAINING IMPURITIES FROM POLYMER, DISTILLING SAID SOLVENT SUBSTANTIALLY FREE OF POLYMER WITH A BASIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROXIDES AND LOWER ALKOXIDES OF ALKALI METALS, PASSING RESULTING DISTILLATE INTO CONTACT WITH A BED OF SILICA GEL PARTICLES AND RECYCLING THUS-PURIFIED HYDROCARBON SOLVENT TO SAID-OLEFINIC HYDROCARBON POLYMERIZATION STEP.
Claim 2
Dependent Claim
123 words
THE PROCESS FOR POLYMERIZING A-OLEFINIC HYDROCARBON TO SOLID POLYMER WHICH COMPRISES POLYMERIZING SAID HYDROCARBON IN A NORMALLY LIQUID HYDROCARBON SOLVENT USING AN IONIC CATALYST CONTAINING A TRANSITION METAL COMPOUND AND A COMPONENT SELECTED FROM THE GROUP CONSISTING OF METALS IN GROUPS I TO III OF THE PERIODIC TABLE AND ORGANO-METAL COMPOUNDS AND HYDRIDES OF GROUPS I TO III METALS, SAID CATALYST PRODUCING IMPURITIES SUBSTANTIALLY SOLUBLE IN SAID SOLVENT DURING SAID POLYMERIZATION, SEPARATING SOLVENT CONTAINING IMPURITIES FROM POLYMER, DISTILLING SAID SOLVENT SUBSTANTIALLY FREE OF POLYMER WITH A BASIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROXIDES AND LOWER ALKOXIDES OF ALKALI METALS, PASSING RESULTING DISTILLATE INTO CONTACT WITH A BED OF SILICA GEL PARTICLES AND RECYCLING THUS-PURIFIED HYDROCARBON SOLVENT TO SAID-OLEFINIC HYDROCARBON POLYMERIZATION STEP.
References Cited (Backward Citations)
CA567511A
Cited
US2315766A
Cited
US2913447A
Cited
GB815310A
Cited
US2886561A
Cited
US2900373A
Cited
US2890214A
Cited
US2914453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |