Patent US3275615A successfully refreshed from Google Patents.
US3275615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing polyethylene in the presence of tertiary butyl hydroperoxide and n-butylamine
Assignee: Union Carbide Corp
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Filing: 1962-12-28
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Granted: 1966-09-27
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Expires: 1982-12-28
Abstract
No abstract record available.
Inventors
- 👤 Robert R Krulisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:14
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A PROCESS FOR PRODUCING POLYETHYLENE WHICH COMPRISES POLYMERIZING ETHYLENE AT A TEMPERATURE OF FROM ABOUT 150*C. TO ABOUT 250*C. AND AT PRESSURE OF FROM ABOUT 5000 P.S.I. TO ABOUT 100,000 P.S.I. WITH A TERIARY BUTYL HYDROPEROXIDE CATALYST WHICH HAS BEEN ACTIVATED WITH N-BUTYLAMINE, THE MOLAR RATIO OF N-BUTLAMINE TO TERIARY BUTYL HYDROPEROXIDE BEING FROM ABOUT 0.01:1 TO ABOUT 100:1, AND THE TERTIARY BUTYL HYDROPEROXIDE BEING EMPLOYED IN AN AMOUNY OF FROM ABOUT 1 P.P.M. TO ABOUT 75 P.P.M., BASED UPON THE TOTAL AMOUNT OF ETHYLENE EMPLOYED.
Claim 2
Dependent Claim
86 words
A PROCESS FOR PRODUCING POLYETHYLENE WHICH COMPRISES POLYMERIZING ETHYLENE AT A TEMPERATURE OF FROM ABOUT 150*C. TO ABOUT 250*C. AND AT PRESSURE OF FROM ABOUT 5000 P.S.I. TO ABOUT 100,000 P.S.I. WITH A TERIARY BUTYL HYDROPEROXIDE CATALYST WHICH HAS BEEN ACTIVATED WITH N-BUTYLAMINE, THE MOLAR RATIO OF N-BUTLAMINE TO TERIARY BUTYL HYDROPEROXIDE BEING FROM ABOUT 0.01:1 TO ABOUT 100:1, AND THE TERTIARY BUTYL HYDROPEROXIDE BEING EMPLOYED IN AN AMOUNY OF FROM ABOUT 1 P.P.M. TO ABOUT 75 P.P.M., BASED UPON THE TOTAL AMOUNT OF ETHYLENE EMPLOYED.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |