US2953552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of ethylene-alpha-butene copolymers with a catalyst of aluminum alkyl, titanium ester and titanium halide
Assignee: Union Carbide Corp
•
Filing: 1958-07-31
•
Granted: 1960-09-20
•
Expires: 1978-07-31
Abstract
No abstract record available.
Inventors
- 👤 Guido B Stampa
- 👤 Mark J Stanek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:06
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A PROCESS FOR THE PRODUCTION OF ETHYLENE-BUTENE-1 COPOLYMERS WHICH COMPRISES CONTACTING ETHYLENE IN AN INERT HYDROCARBON SOLVENT THEREFOR WITH A CATALYTIC AMOUNT AMOUNT OF A CATALYST COMPOSITION CONSISTING ESSENTIALLY OF AN ALUMINUM TRIALKYL, A TITANIUM ESTER HAVING THE GENERAL FORMULA TI(OR)4 WHERE R IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKYL GROUPS HAVING FROM 2 TO 8 CARBON ATOMS AND ALICYCLIC GROUPS CONTAINING FROM 4 TO 8 CARBON ATOMS, AND A TITANIUM HALIDE SELECTED FROM THE GROUP CONSISTING OF TITANIUM TRICHLORIDE, TITANIUM TETRA, CHLORIDE, TITANIUM TRIBROMIDE, AND TITANIUM TETRABROMIDE, THE MOLOR RATIO OF SAID ALUMINUM TRIALKYL TO SAID TITANIUM ESTER BEING IN THE RANGE OF FROM ABOUT 60:1 TO ABOUT 1:3, AND THE MOLAR RATIO OF SAID TITANIUM ESTER TO SAID TITANIUMMMM HALIDE BEING IN THE RANGE OF FROM ABOUT 15:1 TO ABOUT 1:10.
Claim 2
Dependent Claim
136 words
A PROCESS FOR THE PRODUCTION OF ETHYLENE-BUTENE-1 COPOLYMERS WHICH COMPRISES CONTACTING ETHYLENE IN AN INERT HYDROCARBON SOLVENT THEREFOR WITH A CATALYTIC AMOUNT AMOUNT OF A CATALYST COMPOSITION CONSISTING ESSENTIALLY OF AN ALUMINUM TRIALKYL, A TITANIUM ESTER HAVING THE GENERAL FORMULA TI(OR)4 WHERE R IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKYL GROUPS HAVING FROM 2 TO 8 CARBON ATOMS AND ALICYCLIC GROUPS CONTAINING FROM 4 TO 8 CARBON ATOMS, AND A TITANIUM HALIDE SELECTED FROM THE GROUP CONSISTING OF TITANIUM TRICHLORIDE, TITANIUM TETRA, CHLORIDE, TITANIUM TRIBROMIDE, AND TITANIUM TETRABROMIDE, THE MOLOR RATIO OF SAID ALUMINUM TRIALKYL TO SAID TITANIUM ESTER BEING IN THE RANGE OF FROM ABOUT 60:1 TO ABOUT 1:3, AND THE MOLAR RATIO OF SAID TITANIUM ESTER TO SAID TITANIUMMMM HALIDE BEING IN THE RANGE OF FROM ABOUT 15:1 TO ABOUT 1:10.
References Cited (Backward Citations)
US2833755A
Cited
US2846427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |