US3399182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization catalyst consisting of ticl3, r3al, and triethylamine diamine
Assignee: Air Products and Chemicals Inc
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Filing: 1963-07-29
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Granted: 1968-08-27
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Expires: 1983-07-29
Abstract
No abstract record available.
Inventors
- 👤 Farkas Adalbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:21
CPC Classifications
C; C08; C08F; C08F10/00; C08F10/04; C08F10/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
IN THE METHOD OF POLYMERIZING PROPYLENE IN AN INERT SOLVENT CONTAINING A STEREO SPECIFIC CATALYST SYSTEM FEATURING MORE THAN ONE MOL OF TRIALKYL ALUMINUM PER MOL OF TITANIUM TRICHLORIDE BUT LESS THAN ABOUT SIX MOLS OF TRIALKYLALUMINUM PER MOL OF TITANIUM TRICHLORIDE, THE IMPROVEMENT WHICH CONSISTS OF EMPLOYING MORE THAN ONE BUT NOT MORE THAN ABOUT SIX MOLS OF TRIETHYLENEDIAMINE PER MOL OF TITANIUM TRICHLORIDE AS AN ACCELERATOR.
Claim 2
Dependent Claim
68 words
IN THE METHOD OF POLYMERIZING PROPYLENE IN AN INERT SOLVENT CONTAINING A STEREO SPECIFIC CATALYST SYSTEM FEATURING MORE THAN ONE MOL OF TRIALKYL ALUMINUM PER MOL OF TITANIUM TRICHLORIDE BUT LESS THAN ABOUT SIX MOLS OF TRIALKYLALUMINUM PER MOL OF TITANIUM TRICHLORIDE, THE IMPROVEMENT WHICH CONSISTS OF EMPLOYING MORE THAN ONE BUT NOT MORE THAN ABOUT SIX MOLS OF TRIETHYLENEDIAMINE PER MOL OF TITANIUM TRICHLORIDE AS AN ACCELERATOR.
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) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |