US3058970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of olefin polymers
Assignee: Hercules Powder Co
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Filing: 1958-04-22
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Granted: 1962-10-16
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Expires: 1978-04-22
Abstract
No abstract record available.
Inventors
- 👤 Kurt K G Rust
- 👤 Albert G M Gumboldt
- 👤 Horndler Karl Friedrich
- 👤 Sommer Siegfried
- 👤 Heitzer Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:40
CPC Classifications
C; C08; C08F; C08F10/00; C01; C01G; C01G23/00; C01G23/02; C08F110/00; C08F110/04; C08F110/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE PROCESS OF POLYMERIZATING A 1-OLEFIN WHICH COMPRISES CONTACTING SAID OLEFIN IN AN INERT ORGANIC DILUENT WITH A ACATALYST PRODUCED BY MIXING, IN AN INERT LIQUID ORGANIC DILUENT, A DIALKYLALUMINUM MONOHALIDE WITH TITANIUM TETRACHLORIDE IN A MOLAR OF FROM ABOUT -20*C. TO0.3:1 TO ABOUT 2:1 AT A TEMPERATURE OF FROM ABOUT -20*C. TO ABOUT 15* C., HOLDING THE REACTION MIXTURE AT SAID TEMPERATURE FOR A SUBSTANTIAL LENGTH OF TIME, THEN HEATING THE INSOLUBLE FRACTION PRODUCT SO OBTAINED TO A TEMPERATURE OF FROM ABOUT 60*C. TO ABOUT 100*C. AND ACTIVATING SAID INSOLUBLE REACTION PRODUCT WITH A DIALKYLALUMINUM HALIDE.
Claim 2
Dependent Claim
97 words
THE PROCESS OF POLYMERIZATING A 1-OLEFIN WHICH COMPRISES CONTACTING SAID OLEFIN IN AN INERT ORGANIC DILUENT WITH A ACATALYST PRODUCED BY MIXING, IN AN INERT LIQUID ORGANIC DILUENT, A DIALKYLALUMINUM MONOHALIDE WITH TITANIUM TETRACHLORIDE IN A MOLAR OF FROM ABOUT -20*C. TO0.3:1 TO ABOUT 2:1 AT A TEMPERATURE OF FROM ABOUT -20*C. TO ABOUT 15* C., HOLDING THE REACTION MIXTURE AT SAID TEMPERATURE FOR A SUBSTANTIAL LENGTH OF TIME, THEN HEATING THE INSOLUBLE FRACTION PRODUCT SO OBTAINED TO A TEMPERATURE OF FROM ABOUT 60*C. TO ABOUT 100*C. AND ACTIVATING SAID INSOLUBLE REACTION PRODUCT WITH A DIALKYLALUMINUM HALIDE.
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) | 1965-10-15 | 1966-04-16 | 1966-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-15 | 1970-04-16 | 1970-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-15 | 1974-04-16 | 1974-10-16 | $7700.00 | Window Closed / Lapsed |