US3012022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of polymers to remove catalyst residues
Assignee: Imperial Chemical Industries Ltd
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Filing: 1958-04-22
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Granted: 1961-12-05
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Expires: 1978-04-22
Abstract
No abstract record available.
Inventors
- 👤 Reed Hugh Wilma Boulton
- 👤 Telfer Robert Gilmour Jamieson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:18
CPC Classifications
C; C08; C08F; C08F6/00; C08F6/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
IN A PROCESS FOR REMOVING CATALYST RESIDUES FROM SOLID POLYMERS PREPARED BY POLYMERIZING A MEMBER OF THE GROUP CONSISTING OF ETHYLENE AND PROPYLENE IN THE PRESENCE OF A CATALYST PREPARED BY INTERACTING A MEMBER OF THE GROUP CONSISTING OF TITANIUM TETRACHLORIDE AND TITANIUM TRICHLORIDE WITH A MEMBER OF THE GROUP CONSISTING OF ALUMINUM ALKYL AND ALKYL ALUMINUM HALIDES, THE IMPROVEMENT COMPRISING ADDING TO A SLURRY OF SAID POLYMER IN A SOLVENT SELECTED FROM A GROUP CONSISTING OF HYDROCARBONS AND HYDROCARBONS MIXED WITH ETHER, ABOUT 2.5-5% BY WEIGHT OF THE POLYMER OF A METAL HALIDE SELECTED FROM THE GROUP CONSISTING OF ALUMINUM CHLORIDE, ALUMINUM BROMIDE AND ALUMINUM LOWER ALKYL CHLORIDES, ADDING A PRIMARY ALIPHATIC AMINE HAVING 8-18 CARBON ATOMS HEATING TO ABOUT 60-80*C. AND SEPARATING SAID SOLID POLYMER FROM SAID SOLVENT.
Claim 2
Dependent Claim
130 words
IN A PROCESS FOR REMOVING CATALYST RESIDUES FROM SOLID POLYMERS PREPARED BY POLYMERIZING A MEMBER OF THE GROUP CONSISTING OF ETHYLENE AND PROPYLENE IN THE PRESENCE OF A CATALYST PREPARED BY INTERACTING A MEMBER OF THE GROUP CONSISTING OF TITANIUM TETRACHLORIDE AND TITANIUM TRICHLORIDE WITH A MEMBER OF THE GROUP CONSISTING OF ALUMINUM ALKYL AND ALKYL ALUMINUM HALIDES, THE IMPROVEMENT COMPRISING ADDING TO A SLURRY OF SAID POLYMER IN A SOLVENT SELECTED FROM A GROUP CONSISTING OF HYDROCARBONS AND HYDROCARBONS MIXED WITH ETHER, ABOUT 2.5-5% BY WEIGHT OF THE POLYMER OF A METAL HALIDE SELECTED FROM THE GROUP CONSISTING OF ALUMINUM CHLORIDE, ALUMINUM BROMIDE AND ALUMINUM LOWER ALKYL CHLORIDES, ADDING A PRIMARY ALIPHATIC AMINE HAVING 8-18 CARBON ATOMS HEATING TO ABOUT 60-80*C. AND SEPARATING SAID SOLID POLYMER FROM SAID SOLVENT.
References Cited (Backward Citations)
US2899416A
Cited
US2908675A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |