US2919264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removing catalyst residues from polyolefines
Assignee: Huels AG
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Filing: 1957-02-26
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Granted: 1959-12-29
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Expires: 1977-02-26
Abstract
No abstract record available.
Inventors
- 👤 Frese Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:19
CPC Classifications
C; C08; C08F; C08F6/00; C08F6/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
PROCESS FOR WORKING UP A CRUDE LOW-PRESSURE POLYOLEFINE SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENES, POLYPROPYLENES AND POLYBUTYLENES CONTAINING A POLYMERIZATION CATALYST PREPARED BY THE REDUCTION OF A COMPOUND OF AN ELEMENT OF THE GROUP CONSISTING OF THE METALS OF GROUPS IV TO VI OF THE PERIODIC SYSTEM INCLUDING THORIUM AND URANIUM BY REACTION WITH A MEMBER OF THE GROU CONSISTING OF ALKALI METALS, ALUMINUM, ALUMINUM HYDRIDE AND METAL ORGANIC COMPOUNDS OF ALUMINUM, MAGNESIUM, ZINC AND ALKALI METALS, WHICH COMPRISES MIXING A SUSPENSION OF THE CRUDE LOW-PRESSURE POLYOLEFINE IN A VOLATILE LOW TO MEDIUM BOILING HYDROCARBON WITH A POLYVLENT WATER SOLUBLE ALCOHOL IN THE RATIO FROM 1 TO 10 MOLES OF ALCOHOL PER MOL OF THE CATALYST AT A TEMPERATURE OF FROM 20* TO 80* C. AND THEN WASHING THE MIXTURE WITH WATER AT A TEMPERATURE BETWEEN 0* AND 50* C.
Claim 2
Dependent Claim
141 words
PROCESS FOR WORKING UP A CRUDE LOW-PRESSURE POLYOLEFINE SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENES, POLYPROPYLENES AND POLYBUTYLENES CONTAINING A POLYMERIZATION CATALYST PREPARED BY THE REDUCTION OF A COMPOUND OF AN ELEMENT OF THE GROUP CONSISTING OF THE METALS OF GROUPS IV TO VI OF THE PERIODIC SYSTEM INCLUDING THORIUM AND URANIUM BY REACTION WITH A MEMBER OF THE GROU CONSISTING OF ALKALI METALS, ALUMINUM, ALUMINUM HYDRIDE AND METAL ORGANIC COMPOUNDS OF ALUMINUM, MAGNESIUM, ZINC AND ALKALI METALS, WHICH COMPRISES MIXING A SUSPENSION OF THE CRUDE LOW-PRESSURE POLYOLEFINE IN A VOLATILE LOW TO MEDIUM BOILING HYDROCARBON WITH A POLYVLENT WATER SOLUBLE ALCOHOL IN THE RATIO FROM 1 TO 10 MOLES OF ALCOHOL PER MOL OF THE CATALYST AT A TEMPERATURE OF FROM 20* TO 80* C. AND THEN WASHING THE MIXTURE WITH WATER AT A TEMPERATURE BETWEEN 0* AND 50* C.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |