US3058971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of isolating olefin polymer from polymerization reaction mixture
Assignee: Goodrich Gulf Chemicals Inc
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Filing: 1955-12-27
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Granted: 1962-10-16
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Expires: 1975-12-27
Abstract
No abstract record available.
Inventors
- 👤 Floyd F Miller
- 👤 Albert F Ekar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:11
CPC Classifications
C; C08; C08F; C08F6/00; C08F6/02; C08C; C08C2/00; C08C2/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
THE METHOD OF ISOLATING A POLYMER FROM A REACTION MIXTURE PREPARED BY POLYMERIZING A CONJUGATED POLYOLEFIN HYDROCARBON MONOMER IN AN INERT HYDROCARBON DILUENT CONTAINING A CATALYST MADE BY REACTING (1) AN ALKYL ALUMINUM COMPOUND AND (2) A TITANIUM TETRAHALIDE, WHICH METHOD COMPRISES ADDING SAID REACTION MIXTURE TO A MIXED ALCOHOL:DILUENT SOLUTION WHILE AGITATING THE LATTER TO BRING ABOUT (1) THE SEPARATION OF SAID POLMER AS DISCRETE AND (3) THE CONVERSION OF SAID PARTICLES OF SAID POLYMER TO AN EASILY HANDLED FORM, SAID MIXED SOLUTION CONTAINING SAID ALCOHOL AND SAID DILUENT IN PROPORTIONS ADAPTED TO CAUSE THE CONTROLLED SEPARATION OF THE SAID POLYMER AS DISCRETE, EASILY-EXTRACTED PARTICLES OF THE DESIRED SIZE AND PHYSICAL CONDITION, AND SEPARATING SAID POLYMER PARTICLES FROM SAID MIXED SOLUTION.
Claim 2
Independent Claim
122 words
THE METHOD OF ISOLATING A POLYMER FROM A REACTION MIXTURE PREPARED BY POLYMERIZING A CONJUGATED POLYOLEFIN HYDROCARBON MONOMER IN AN INERT HYDROCARBON DILUENT CONTAINING A CATALYST MADE BY REACTING (1) AN ALKYL ALUMINUM COMPOUND AND (2) A TITANIUM TETRAHALIDE, WHICH METHOD COMPRISES ADDING SAID REACTION MIXTURE TO A MIXED ALCOHOL:DILUENT SOLUTION WHILE AGITATING THE LATTER TO BRING ABOUT (1) THE SEPARATION OF SAID POLMER AS DISCRETE AND (3) THE CONVERSION OF SAID PARTICLES OF SAID POLYMER TO AN EASILY HANDLED FORM, SAID MIXED SOLUTION CONTAINING SAID ALCOHOL AND SAID DILUENT IN PROPORTIONS ADAPTED TO CAUSE THE CONTROLLED SEPARATION OF THE SAID POLYMER AS DISCRETE, EASILY-EXTRACTED PARTICLES OF THE DESIRED SIZE AND PHYSICAL CONDITION, AND SEPARATING SAID POLYMER PARTICLES FROM SAID MIXED SOLUTION.
References Cited (Backward Citations)
US2458378A
Cited
BE533362A
Cited
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 |