US3006907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for finishing polyolefines
Assignee: Hoechst AG
•
Filing: 1956-04-17
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Granted: 1961-10-31
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Expires: 1976-04-17
Abstract
No abstract record available.
Inventors
- 👤 Rehn Karl
- 👤 Junghanns Ernst
- 👤 Bestian Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:35
CPC Classifications
C; C08; C08F; C08F6/00; C08F6/02; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
THE PROCESS OF FINISHING POLYOLEFINS WHICH HAVE BEEN PRODUCED BY LOW-PRESSURE POLYMERIZATION OF A LOWER OLEFIN IN THE PRESENCE OF A CATALYTIC AMOUNT OF A CATALYST COMPRISING AN ORGANOMETALLIC COMPOUND AND A COMPOUND OF A METAL OF SUB-GROUPS IV-VI OF THE PERIODIC TABLE, WHICH COMPRISES THE STEPS OF TREATING A SUSPENSION OF THE POLYOLEFIN WITH AN AQUEOUS ALKALINE MATERIAL TO KILL THE CATALYST, SEPARATING THE MAJOR PORTION OF THE SUSPENSION MEDIUM FROM THE POLYOLEFIN, SUSPENDING THE SEPARATED POLYOLEFIN IN WATER, AND THEN SUBJECTING THE AQUEOUS POLYOLEFIN SUSPENSION TO WATER-VAPOR DISTILLATION WHILE MAINTAINING THE PH OF THE SUSPENSION WITHIN THE RANGE FROM ABOUT 7 TO ABOUT 9.
Claim 2
Dependent Claim
106 words
THE PROCESS OF FINISHING POLYOLEFINS WHICH HAVE BEEN PRODUCED BY LOW-PRESSURE POLYMERIZATION OF A LOWER OLEFIN IN THE PRESENCE OF A CATALYTIC AMOUNT OF A CATALYST COMPRISING AN ORGANOMETALLIC COMPOUND AND A COMPOUND OF A METAL OF SUB-GROUPS IV-VI OF THE PERIODIC TABLE, WHICH COMPRISES THE STEPS OF TREATING A SUSPENSION OF THE POLYOLEFIN WITH AN AQUEOUS ALKALINE MATERIAL TO KILL THE CATALYST, SEPARATING THE MAJOR PORTION OF THE SUSPENSION MEDIUM FROM THE POLYOLEFIN, SUSPENDING THE SEPARATED POLYOLEFIN IN WATER, AND THEN SUBJECTING THE AQUEOUS POLYOLEFIN SUSPENSION TO WATER-VAPOR DISTILLATION WHILE MAINTAINING THE PH OF THE SUSPENSION WITHIN THE RANGE FROM ABOUT 7 TO ABOUT 9.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-30 | 1965-05-01 | 1965-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-30 | 1969-05-01 | 1969-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-30 | 1973-05-01 | 1973-10-31 | $7700.00 | Window Closed / Lapsed |