Patent US4291025A successfully refreshed from Google Patents.
US2966474A
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Method of preparing stable polyolefin dispersion
Assignee: Glanzstoff AG
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Filing: 1957-12-03
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Granted: 1960-12-27
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Expires: 1977-12-03
Abstract
No abstract record available.
Inventors
- 👤 Jurgeleit Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:20
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/11; C08J2323/00; C08J2323/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
AN IMPROVED METHOD OF PREPARING A STABLE DISPERSION OF A HIGH MOLECULAR WEIGHT POLYOLEFINE CAPABLE OF BEING HEATED TO FORM A SPINNING SOLUTION WHICH COMPRISES: DISSOLVING AT A TEMPERATURE ABOVE ABOUT 140*C. IN A HOT LIQUID PETROLEUM OIL SELECTED FROM THE GROUP CONSISTING OF PARAFFIN AND NAPHTHENE HYDROCARBONS FROM 0.01 TO NOT MORE THAN 2 PERCENT BY WEIGHT OF A LOW TO HIGH MOLECULAR WEIGHT POLYOLEFINE OF THE GROUP CONSISTING OF POLY -ETHYLENE, -PROPYLENE, -BUTYLENE AND -PENTENE, COOLING THE RESULTING SOLUTION TO FROM ABOUT 0*C. TO 40*C., AND UNIFORMLY DISPERSING IN SAID COOLED SOLUTION A FINELY POWDERED HIGH MOLECULAR WEIGHT POLYOLEFINE OF SAID GROUP, THE TOTAL CONTENT OF POLYOLEFINE IN SAID OIL BEING NOT MORE THAN 18 PERCENT BY WEIGHT OF WHICH AT LEAST A PREDOMINANT PROPORTION HAS A HIGH MOLECULAR WEIGHT OF AT LEAST ABOUT 70,000.
Claim 2
Dependent Claim
137 words
AN IMPROVED METHOD OF PREPARING A STABLE DISPERSION OF A HIGH MOLECULAR WEIGHT POLYOLEFINE CAPABLE OF BEING HEATED TO FORM A SPINNING SOLUTION WHICH COMPRISES: DISSOLVING AT A TEMPERATURE ABOVE ABOUT 140*C. IN A HOT LIQUID PETROLEUM OIL SELECTED FROM THE GROUP CONSISTING OF PARAFFIN AND NAPHTHENE HYDROCARBONS FROM 0.01 TO NOT MORE THAN 2 PERCENT BY WEIGHT OF A LOW TO HIGH MOLECULAR WEIGHT POLYOLEFINE OF THE GROUP CONSISTING OF POLY -ETHYLENE, -PROPYLENE, -BUTYLENE AND -PENTENE, COOLING THE RESULTING SOLUTION TO FROM ABOUT 0*C. TO 40*C., AND UNIFORMLY DISPERSING IN SAID COOLED SOLUTION A FINELY POWDERED HIGH MOLECULAR WEIGHT POLYOLEFINE OF SAID GROUP, THE TOTAL CONTENT OF POLYOLEFINE IN SAID OIL BEING NOT MORE THAN 18 PERCENT BY WEIGHT OF WHICH AT LEAST A PREDOMINANT PROPORTION HAS A HIGH MOLECULAR WEIGHT OF AT LEAST ABOUT 70,000.
References Cited (Backward Citations)
US2210771A
Cited
US2773053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |