US2566537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Peroxide catalyzed polymerization of ethylene in the presence of a phenolic compound
Assignee: Universal Oil Products Co
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Filing: 1948-03-30
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Granted: 1951-09-04
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Expires: 1968-03-30
Abstract
No abstract record available.
Inventors
- 👤 Schmerling Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:58
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
IN THE POLYMERIZATION OF ETHYLENE IN THE PRESENCE OF AN ORGANIC PEROXIDE CATALYST AND A DILUENT SELECTED FROM THE GROUP CONSISTING OF ALCOHOLS, AROMATIC HYDROCARBONS AND SATURATED HYDROCARBONS CONTAINING AT LEAST 3 CARBON ATOMS PER MOLECULE, THE IMPROVEMENT WHICH COMPRISES ADDING TO THE REACTION MIXTURE A PHENOLIC COMPOUND CONSISTING OF CARBON, HYDROGEN AND OXYGEN IN SUFFICIENT AMOUNT TO INCREASE THE MELTING POINT OF THE ETHYLENE POLYMER AND SUBJECTING THE MIXTURE TO POLYMERIZATION UNDER A PRESSURE OF FROM ABOUT 15 TO ABOUT 500 ATMOSPHERE AND AT A TEMPERATURE AT LEAST AS HIGH AS THE DECOMPOSITION TEMPERATURE OF SAID CATALYST.
Claim 2
Dependent Claim
98 words
IN THE POLYMERIZATION OF ETHYLENE IN THE PRESENCE OF AN ORGANIC PEROXIDE CATALYST AND A DILUENT SELECTED FROM THE GROUP CONSISTING OF ALCOHOLS, AROMATIC HYDROCARBONS AND SATURATED HYDROCARBONS CONTAINING AT LEAST 3 CARBON ATOMS PER MOLECULE, THE IMPROVEMENT WHICH COMPRISES ADDING TO THE REACTION MIXTURE A PHENOLIC COMPOUND CONSISTING OF CARBON, HYDROGEN AND OXYGEN IN SUFFICIENT AMOUNT TO INCREASE THE MELTING POINT OF THE ETHYLENE POLYMER AND SUBJECTING THE MIXTURE TO POLYMERIZATION UNDER A PRESSURE OF FROM ABOUT 15 TO ABOUT 500 ATMOSPHERE AND AT A TEMPERATURE AT LEAST AS HIGH AS THE DECOMPOSITION TEMPERATURE OF SAID CATALYST.
References Cited (Backward Citations)
US2395381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-03 | 1955-03-05 | 1955-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-03 | 1959-03-05 | 1959-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-03 | 1963-03-05 | 1963-09-04 | $7700.00 | Window Closed / Lapsed |