US3371079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst and catalytic process
Assignee: Standard Oil Co
•
Filing: 1965-05-21
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Granted: 1968-02-27
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Expires: 1985-05-21
Abstract
No abstract record available.
Inventors
- 👤 Edwin F Peters
- 👤 Omar O Juveland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:24
CPC Classifications
C; C08; C08F; C08F10/00; C08F10/02; B; B01; B01J; B01J23/00; B01J23/16; B01J23/20; B01J23/22; B01J23/24; B01J23/26; B01J23/28; Y; Y10; Y10S; Y10S526/00; Y10S526/906; Y10S526/908
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A PROCESS FOR THE POLYMERIZATION OF ETHYLENE TO PRODUCE A SOLID POLYMER, WHICH PROCESS COMPRISES CONTACTING ETHYLENE WITH A CATALYST COMPRISING VANADIUM PENTOXIDE EXTENDED UPON SILICA, HAVING A PARTICLE DIAMETER OF FROM ABOUT 0.01 TO ABOUT 0.04 MICRON SAID CATALYST HAVING AN APERTURE DENSITY OF LESS THAN ABOUT 0.1 GRAM PER CUBIC CENTIMETER AND WITH A CATALYST PROMOTER WHICH IS A TRIHYDROCARBON ALUMINUM, EACH CATALYST COMPONENET BEING PRESENT IN AN OPERATIVE PROPORTION OF AT LEAST ABOUT 0.1 PERCENT BY WEIGHT BASED ON THE WEIGHT OF THE CATALYST, EFFECTING SAID CONTACTING UNDER SUPERATMOSPHERIC PRESSURE AT A SUITABLE POLYMERIZING TEMPERATURE IN THE RANGE OF FROM ABOUT 0*C. TO ABOUT 350*C., AND RECOVERING THE POLYMER PRODUCT THUS PRODUCED.
Claim 2
Dependent Claim
115 words
A PROCESS FOR THE POLYMERIZATION OF ETHYLENE TO PRODUCE A SOLID POLYMER, WHICH PROCESS COMPRISES CONTACTING ETHYLENE WITH A CATALYST COMPRISING VANADIUM PENTOXIDE EXTENDED UPON SILICA, HAVING A PARTICLE DIAMETER OF FROM ABOUT 0.01 TO ABOUT 0.04 MICRON SAID CATALYST HAVING AN APERTURE DENSITY OF LESS THAN ABOUT 0.1 GRAM PER CUBIC CENTIMETER AND WITH A CATALYST PROMOTER WHICH IS A TRIHYDROCARBON ALUMINUM, EACH CATALYST COMPONENET BEING PRESENT IN AN OPERATIVE PROPORTION OF AT LEAST ABOUT 0.1 PERCENT BY WEIGHT BASED ON THE WEIGHT OF THE CATALYST, EFFECTING SAID CONTACTING UNDER SUPERATMOSPHERIC PRESSURE AT A SUITABLE POLYMERIZING TEMPERATURE IN THE RANGE OF FROM ABOUT 0*C. TO ABOUT 350*C., AND RECOVERING THE POLYMER PRODUCT THUS PRODUCED.
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) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |