US3367923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the polymerization of olefins
Assignee: Mitsui Chemicals Inc
•
Filing: 1964-02-05
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Granted: 1968-02-06
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Expires: 1984-02-05
Abstract
No abstract record available.
Inventors
- 👤 Tanaka Tsutomu
- 👤 Tokuzumi Tadaichi
- 👤 Fujimura Hiroshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:32
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A PROCESS FOR THE POLYMERIZATION OF OLEFINS WHEREIN AT LEAST ONE ETHYLENICALLY UNSATURATED HYDROCARBON IS CONTACTED IN A SOLVENT WITH A CATALYST COMPRISING (1) AT LEAST ONE ORGAINIC ALUMINUM COMPOUND, (2) AT LEAST ONE COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF METALS OF GROUPS IV TO VI OF PERIODIC TABLE, PROVIDED THAT AT LEAST ONE OF THESE METAL COMPOUNDS (1) AND (2) BEING PRESENT IN THE FORM OF ALKOXY OR ARYLOXY COMPOUND AND (3) A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ORGANIC POLYBASIC ACID ESTERS, ESTERS OF ORGANIC CONSISTING WITH POLYALCOHOLS AND POLYSILOXANES, CHARACTERIZED IN THAT THE POLYMERRIZATION IS CARRIED OUT IN PRESENCE OF HYDROGEN TO ATTAIN A HIGHER IMPACT STRENGTH THAN WITHOUT HYDROGEN FOR THE RESULTING PRODUCT.
Claim 2
Dependent Claim
122 words
A PROCESS FOR THE POLYMERIZATION OF OLEFINS WHEREIN AT LEAST ONE ETHYLENICALLY UNSATURATED HYDROCARBON IS CONTACTED IN A SOLVENT WITH A CATALYST COMPRISING (1) AT LEAST ONE ORGAINIC ALUMINUM COMPOUND, (2) AT LEAST ONE COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF METALS OF GROUPS IV TO VI OF PERIODIC TABLE, PROVIDED THAT AT LEAST ONE OF THESE METAL COMPOUNDS (1) AND (2) BEING PRESENT IN THE FORM OF ALKOXY OR ARYLOXY COMPOUND AND (3) A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ORGANIC POLYBASIC ACID ESTERS, ESTERS OF ORGANIC CONSISTING WITH POLYALCOHOLS AND POLYSILOXANES, CHARACTERIZED IN THAT THE POLYMERRIZATION IS CARRIED OUT IN PRESENCE OF HYDROGEN TO ATTAIN A HIGHER IMPACT STRENGTH THAN WITHOUT HYDROGEN FOR THE RESULTING PRODUCT.
References Cited (Backward Citations)
US3230208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-05 | 1971-08-07 | 1972-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-05 | 1975-08-07 | 1976-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-05 | 1979-08-07 | 1980-02-06 | $7700.00 | Window Closed / Lapsed |