US3254070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of high molecular weight ethylene polymers
Assignee: Ruhrchemie AG
•
Filing: 1955-06-20
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Granted: 1966-05-31
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Expires: 1975-06-20
Abstract
No abstract record available.
Inventors
- 👤 Roelen Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:40
CPC Classifications
C; C08; C08F; C08F110/00; C08F110/02; B; B01; B01J; B01J19/00; B01J19/18; B01J19/1862; B01J8/00; B01J8/08; B01J8/10; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00076; B01J2219/00085; B01J2219/00087; B01J2219/00094; B01J2219/00164; B01J2219/18; B01J2219/182; B01J2219/185; Y; Y10; Y10S; Y10S526/00; Y10S526/901; Y10S526/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A PROCESS FOR THE PRODUCTION OF POLYETHYLENE HAVING MOLECULAR WEIGHTS RANGING FROM 100,000 TO 500,000 FROM ETHYLENE AND ETHYLENE-CONTAINING GASES IN A REACTION VESSEL, WHICH COMPRISSES CHARGING SAID VESSEL WITH POWDERED POLYETHYLENE, PREVIOUSLY FORMED, SPRAYING THEREON A CATALYST CONSISTING OF A MIXTURE OF DIETHYL ALUMINUM CHLORIDE WITH TITANIUM TETRACHLORIDE DISPERSED IN A HYDROGENATED C9-C11 HYDROCARBON FRACTION, AND INTRODUCING A GAS CONTAINING AT LEAST 97 PERCENT ETHYLENE, MAINTAINING SAID REACTION VESSEL AT A PRESSURE BELOW 200 KG./CM.**2 AND AT A TEMPERATURE OF 10 TO 120*C. DEPENDING UPON THE MOLECULAR WEIGHT OF THE POLYETHYLENE TO BE ATTAINED, THE PROVIDING MECHANICAL AGITATION, WHEREBY APPROXIMATELY 95 PERCENT OF SAID ETHYLNE ARE CONVERTED INTO POLYETHYLENE.
Claim 2
Dependent Claim
110 words
A PROCESS FOR THE PRODUCTION OF POLYETHYLENE HAVING MOLECULAR WEIGHTS RANGING FROM 100,000 TO 500,000 FROM ETHYLENE AND ETHYLENE-CONTAINING GASES IN A REACTION VESSEL, WHICH COMPRISSES CHARGING SAID VESSEL WITH POWDERED POLYETHYLENE, PREVIOUSLY FORMED, SPRAYING THEREON A CATALYST CONSISTING OF A MIXTURE OF DIETHYL ALUMINUM CHLORIDE WITH TITANIUM TETRACHLORIDE DISPERSED IN A HYDROGENATED C9-C11 HYDROCARBON FRACTION, AND INTRODUCING A GAS CONTAINING AT LEAST 97 PERCENT ETHYLENE, MAINTAINING SAID REACTION VESSEL AT A PRESSURE BELOW 200 KG./CM.**2 AND AT A TEMPERATURE OF 10 TO 120*C. DEPENDING UPON THE MOLECULAR WEIGHT OF THE POLYETHYLENE TO BE ATTAINED, THE PROVIDING MECHANICAL AGITATION, WHEREBY APPROXIMATELY 95 PERCENT OF SAID ETHYLNE ARE CONVERTED INTO POLYETHYLENE.
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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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |