US2887473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of ethylene
Assignee: EIDP Inc
•
Filing: 1955-05-02
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Granted: 1959-05-19
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Expires: 1975-05-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph Hendrickson Balthis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:27
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
PROCESS FOR POLYMERIZING ETHYLENE WHICH COMPRISES CONDUCTING THE POLYMERIZATION AT A TEMPERATURE OF FROM 25* TO 250* C. AND A PRESSURE OF FROM 3 TO 300 ATMOSPHERES IN THE PRESENCE OF A CATALYST FORMED BY ADMIXING A MEMBER OF THE CLASS CONSISTING OF MOLYBDENUM PENTAHALIDES AND MOLYBDENUM HEXAHALIDES WITH A SECOND COMPONENT WHICH A MEMBER OF THE CLASS CONSISTING OF METALLIC MOLYBDENUM, OXIDES OF METALS OF GROUPS V (A) AND VI(A) OF THE PERIODIC TABLE HAVING ATOMIC NUMBERS FROM 23 TO 74, INCLUSIVE, AND HALIDES OF SAID METALS, VALENCE OF THE SAID METAL IN SAID OXIDES AND HALIDES BEING NOT MORE THAN 4, THE MOLAR RATIO OF THE SAID MOLYBDENUM HALIDE TO THE SAID SECOND COMPONENT BEING FROM 10:1 TO 1:10.
Claim 2
Dependent Claim
121 words
PROCESS FOR POLYMERIZING ETHYLENE WHICH COMPRISES CONDUCTING THE POLYMERIZATION AT A TEMPERATURE OF FROM 25* TO 250* C. AND A PRESSURE OF FROM 3 TO 300 ATMOSPHERES IN THE PRESENCE OF A CATALYST FORMED BY ADMIXING A MEMBER OF THE CLASS CONSISTING OF MOLYBDENUM PENTAHALIDES AND MOLYBDENUM HEXAHALIDES WITH A SECOND COMPONENT WHICH A MEMBER OF THE CLASS CONSISTING OF METALLIC MOLYBDENUM, OXIDES OF METALS OF GROUPS V (A) AND VI(A) OF THE PERIODIC TABLE HAVING ATOMIC NUMBERS FROM 23 TO 74, INCLUSIVE, AND HALIDES OF SAID METALS, VALENCE OF THE SAID METAL IN SAID OXIDES AND HALIDES BEING NOT MORE THAN 4, THE MOLAR RATIO OF THE SAID MOLYBDENUM HALIDE TO THE SAID SECOND COMPONENT BEING FROM 10:1 TO 1:10.
References Cited (Backward Citations)
US2092295A
Cited
US2692258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |