Patent US3358056A successfully refreshed from Google Patents.
US3358056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization process
Assignee: Phillips Petroleum Co
•
Filing: 1964-06-01
•
Granted: 1967-12-12
•
Expires: 1984-06-01
Abstract
No abstract record available.
Inventors
- 👤 Renaudo Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:32
CPC Classifications
C; C08; C08F; C08F297/00; C08F297/06; C08F297/08; C08F297/083; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
A TWO-STEP POLYMERIZATION PROCESS COMPRISING A STEP IN WHICH PROPYLENE AS THE SOLE MONOMER IS POLYMERIZED IN THE PRESENCE OF LIQUID PROPYLENE IN THE ABSENCE OF ADDITIONAL LIQUID DILUENT AT A TEMPERATURE WITHIN THE RANGE OF 80 TO 150*F. AND A STEP IN WHICH ETHYLENE IS POLYMERIZED IN THE PRESENCE OF LIQUID PROPYLENE IN THE ABSENCE OF ADDITIONAL LIQUID DILUENT AT A TEMPERATURE WITHIN THE RANGE OF -50 TO 75*F., THE STEP WHICH IS CARRIED OUT SECOND BEING PERFORMED IN THE PRESENCE OF THE POLYMER PRODUCED IN THE FIRST, USING A CATALYST FORMED BY MIXING MATERIALS COMPRISING (A) A COMPOUND HAVING THE FORMULA RNMXM, WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL, CYCLOALKYL AND ARYL RADICALS, X IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND A HALOGEN, M IS SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, GALLIUM, INDIUM AND THALLIUM, N IS FROM 1 TO 3, INCLUSIVE, M IS FROM 0 TO 2, INCLUSIVE, AND THE SUM OF M AND N IS EQUAL TO THE VALENCE OF THE METAL M, AND (B) A HALIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF METALS OF GROUPS IV-A, IV-B, V-B,VI-B, AND VIII.
Claim 2
Dependent Claim
194 words
A TWO-STEP POLYMERIZATION PROCESS COMPRISING A STEP IN WHICH PROPYLENE AS THE SOLE MONOMER IS POLYMERIZED IN THE PRESENCE OF LIQUID PROPYLENE IN THE ABSENCE OF ADDITIONAL LIQUID DILUENT AT A TEMPERATURE WITHIN THE RANGE OF 80 TO 150*F. AND A STEP IN WHICH ETHYLENE IS POLYMERIZED IN THE PRESENCE OF LIQUID PROPYLENE IN THE ABSENCE OF ADDITIONAL LIQUID DILUENT AT A TEMPERATURE WITHIN THE RANGE OF -50 TO 75*F., THE STEP WHICH IS CARRIED OUT SECOND BEING PERFORMED IN THE PRESENCE OF THE POLYMER PRODUCED IN THE FIRST, USING A CATALYST FORMED BY MIXING MATERIALS COMPRISING (A) A COMPOUND HAVING THE FORMULA RNMXM, WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL, CYCLOALKYL AND ARYL RADICALS, X IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND A HALOGEN, M IS SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, GALLIUM, INDIUM AND THALLIUM, N IS FROM 1 TO 3, INCLUSIVE, M IS FROM 0 TO 2, INCLUSIVE, AND THE SUM OF M AND N IS EQUAL TO THE VALENCE OF THE METAL M, AND (B) A HALIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF METALS OF GROUPS IV-A, IV-B, V-B,VI-B, AND VIII.
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) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |