Patent US3278513A successfully refreshed from Google Patents.
US3278513A
Expired / Lapsed
US
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Production of emulsifiable waxes
Assignee: BASF SE
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Filing: 1962-12-17
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Granted: 1966-10-11
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Expires: 1982-12-17
Abstract
No abstract record available.
Inventors
- 👤 Jahrstorfer Michael
- 👤 Schmeidl Karl
- 👤 Staiger Gerhard
- 👤 Vogel Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:07
CPC Classifications
C; C09; C09G; C09G1/00; C09G1/06; C09G1/08; C08; C08F; C08F8/00; C08F8/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A PROCESS FOR PRODUCTION OF EMULSIFIABLE WAXES WHICH CONSISTS ESSENTIALLY OF: CONTACTING MOLTEN POLYETHYLENE HAVING A MOLECULAR WEIGHT OF BETWEEN 1,000 AND 50,000 WITH AN OXIDIZING GAS SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND GASES CONTAINING OXYGEN UNDER INCREASED PRESSURE AND AT TEMPERATURES BETWEEN 230* C. AND 250* C., AND CONTINUING THE OXIDATION UNTIL 0.5 TO 10 KG. OXYGEN HAS BEEN ABSORBED FOR EACH 100 KG. OF THE POLYETHYLENE, SAID OXIDATION BEING CARRIED OUT UNDER INTENSE AGITATION WITH AN IGITATION OUTPUT OF FROM 1 TO 15 LILOWATTS BEING UTILIZED PER 100 KG. THE POLYETHYLENE.
Claim 2
Dependent Claim
95 words
A PROCESS FOR PRODUCTION OF EMULSIFIABLE WAXES WHICH CONSISTS ESSENTIALLY OF: CONTACTING MOLTEN POLYETHYLENE HAVING A MOLECULAR WEIGHT OF BETWEEN 1,000 AND 50,000 WITH AN OXIDIZING GAS SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND GASES CONTAINING OXYGEN UNDER INCREASED PRESSURE AND AT TEMPERATURES BETWEEN 230* C. AND 250* C., AND CONTINUING THE OXIDATION UNTIL 0.5 TO 10 KG. OXYGEN HAS BEEN ABSORBED FOR EACH 100 KG. OF THE POLYETHYLENE, SAID OXIDATION BEING CARRIED OUT UNDER INTENSE AGITATION WITH AN IGITATION OUTPUT OF FROM 1 TO 15 LILOWATTS BEING UTILIZED PER 100 KG. THE POLYETHYLENE.
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) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |