Patent US2879238A successfully refreshed from Google Patents.
US2879238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of oxidizing mixture of microcrystalline wax, monocarboxylated polyethylene and polyethylene, and product produced thereby
Assignee: Baker Petrolite LLC
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Filing: 1955-03-10
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Granted: 1959-03-24
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Expires: 1975-03-10
Abstract
No abstract record available.
Inventors
- 👤 Groote Melvin De
- 👤 Franklin E Mange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:49
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
THE PROCESS OF OXIDIZING A THREE-COMPONENT MIXTURE CONSISTING OF (A) REFINED TANK BOTTOM-DERIVED MICROCRYSTALLINE WAX HAVING A CARBON ATOM RANGE OF APPROXIMATELY 35 TO 100; SAID WAX BEING CHARACTERIZED BY THE FOLLOWING CHARACTERISTICS; (AA) OXIDATION SUSCEPTIBLE IN CONVENTIONAL GASEOUS OXYGEN-CONTAINING OXIDATION PROCEDURE; (BB) IMMISCIBLE WITH POLYSTYRENE OF MOLECULAR WEIGHT RANGE 5,000 TO 10,000 AT APPROXIMATELY 160* C., AND (CC) HAS NOT BEEN RENDERED OXIDATION SUSCEPTIBLE BY SUBJECTING TO TREATMENT WITH A MEMBER OF THE CLASS CONSISTING OF A METALLIC HALIDE, HYDROCHLORIC ACID AND CHLORINATED HYDROCARBON; (B) A LOW MOLAL MONOCARBOXYLATED POLYETHYLENE HAVING A MOLECULAR WEIGHT OF APPROXIMATELY 2000; SAID POLYETHYLENE BEING PRODUCED BY POLYMERIZING ETHYLENE UNDER 425-475 ATMOSPHERES AT TEMPERATURES BETWEEN 140-200* C. IN THE PRESENCE OF ISOPROPANOL AND A PEROXIDE; FOLLOWED BY OXIDATION; (C) A NORMAL COMMERCIAL POLYETHYLENE DEFINED BY THE
Claim 2
Dependent Claim
132 words
THE PROCESS OF OXIDIZING A THREE-COMPONENT MIXTURE CONSISTING OF (A) REFINED TANK BOTTOM-DERIVED MICROCRYSTALLINE WAX HAVING A CARBON ATOM RANGE OF APPROXIMATELY 35 TO 100; SAID WAX BEING CHARACTERIZED BY THE FOLLOWING CHARACTERISTICS; (AA) OXIDATION SUSCEPTIBLE IN CONVENTIONAL GASEOUS OXYGEN-CONTAINING OXIDATION PROCEDURE; (BB) IMMISCIBLE WITH POLYSTYRENE OF MOLECULAR WEIGHT RANGE 5,000 TO 10,000 AT APPROXIMATELY 160* C., AND (CC) HAS NOT BEEN RENDERED OXIDATION SUSCEPTIBLE BY SUBJECTING TO TREATMENT WITH A MEMBER OF THE CLASS CONSISTING OF A METALLIC HALIDE, HYDROCHLORIC ACID AND CHLORINATED HYDROCARBON; (B) A LOW MOLAL MONOCARBOXYLATED POLYETHYLENE HAVING A MOLECULAR WEIGHT OF APPROXIMATELY 2000; SAID POLYETHYLENE BEING PRODUCED BY POLYMERIZING ETHYLENE UNDER 425-475 ATMOSPHERES AT TEMPERATURES BETWEEN 140-200* C. IN THE PRESENCE OF ISOPROPANOL AND A PEROXIDE; FOLLOWED BY OXIDATION; (C) A NORMAL COMMERCIAL POLYETHYLENE DEFINED BY THE
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) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |