US2951833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of a substantially metal-free solid alphaolefin polymer
Assignee: Sunoco Inc
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Filing: 1957-04-09
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Granted: 1960-09-06
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Expires: 1977-04-09
Abstract
No abstract record available.
Inventors
- 👤 Harry S Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:04
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
PROCESS FOR THE PREPARATION OF A SUBSTANTIALLY METALFREE SOLID ALPHNA-OLEFIN POLYMER FROM A SOLID ALPHA-OLEFIN POLYMER CONTAINING CATALYST RESIDUES REMAINING THEREIN AFTER POLYMERIZING AN ALPHA-OLEFIN IN THE PRESENCE OF A TITANIUM HALIDE CATALYST AND AN ACTIVATOR THEREFOR SELECTED FROM THE GROUP CONSISTING OF METAL ALKYLS, METAL HYDRIDES, METAL BOROHYDRIDES, AND ALKYL METAL HALIDES, WHICH COMPRISES CONTACTING SAID ALPHA-OLEFIN POLYMER CONTAINING SAID CATALYST RESIDUES WITH AN AQUEOUS SOLUTION OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SODIUM BICARBONATE AND POTASSIUM BICARBONATE, AND SEPARATING A SUBSTANTIALLY METAL-FREE SOLID ALPHA-OLEFIN POLYMER FROM SAID AQUEOUS SOLUTION.
Claim 2
Dependent Claim
93 words
PROCESS FOR THE PREPARATION OF A SUBSTANTIALLY METALFREE SOLID ALPHNA-OLEFIN POLYMER FROM A SOLID ALPHA-OLEFIN POLYMER CONTAINING CATALYST RESIDUES REMAINING THEREIN AFTER POLYMERIZING AN ALPHA-OLEFIN IN THE PRESENCE OF A TITANIUM HALIDE CATALYST AND AN ACTIVATOR THEREFOR SELECTED FROM THE GROUP CONSISTING OF METAL ALKYLS, METAL HYDRIDES, METAL BOROHYDRIDES, AND ALKYL METAL HALIDES, WHICH COMPRISES CONTACTING SAID ALPHA-OLEFIN POLYMER CONTAINING SAID CATALYST RESIDUES WITH AN AQUEOUS SOLUTION OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SODIUM BICARBONATE AND POTASSIUM BICARBONATE, AND SEPARATING A SUBSTANTIALLY METAL-FREE SOLID ALPHA-OLEFIN POLYMER FROM SAID AQUEOUS SOLUTION.
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) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |