Patent US3076776A successfully refreshed from Google Patents.
US3076776A
Expired / Lapsed
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Method for improving the extrudability of crystalline polyolefins with aliphatic alcohols
Assignee: Phillips Petroleum Co
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Filing: 1958-10-30
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Granted: 1963-02-05
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Expires: 1978-10-30
Abstract
No abstract record available.
Inventors
- 👤 Robert A Findlay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:43
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/05
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
52 words
A METHOD FOR IMPROVING THE EXTRUDABILITY OF A HIGHLY CRYSTALLINE POLYMER OF A 1-OLEFIN, SAID POLYMER HAVING A DENSITY OF AT LEAST 0.94 AT 20*C., COMPRISING ADDING TO THE POLYMER A MINOR AMOUNT OF AN ALIPHATIC ALCHOL CONTAINING OXYGEN ONLY IN HYDROXYL GROUPS AND CONTAINING 10 TO 25 CARBON ATOMS PER MOLECULE.
Claim 2
Independent Claim
52 words
A METHOD FOR IMPROVING THE EXTRUDABILITY OF A HIGHLY CRYSTALLINE POLYMER OF A 1-OLEFIN, SAID POLYMER HAVING A DENSITY OF AT LEAST 0.94 AT 20*C., COMPRISING ADDING TO THE POLYMER A MINOR AMOUNT OF AN ALIPHATIC ALCHOL CONTAINING OXYGEN ONLY IN HYDROXYL GROUPS AND CONTAINING 10 TO 25 CARBON ATOMS PER MOLECULE.
Claim 3
Dependent Claim
98 words
IN THE POLYMERIZATION PROCESS COMPRISING CONTACTING A MEMBER SELECTED FROM THE GROUP CONSISTING OF ETHYLENE AND MIXTURES OF ETHYLENE WITH OTHER 1-OLEFINS WITH A SUSPENSION OF A CHROMIUM OXIDE:CONTAINING CATALYST IN A LIQUID HYDROCARON AT A TEMPERATURE SUCH THAT SUBSTANTIALLY ALL OF THE POLYMER PRODUCED IS INSOLUBLE IN SAID LIQUID HYDROCARBON AND IS DIFFICULTY EXTRUDABLE, THE IMPROVEMENT COMPRISING ADDING TO THE POLYMER A MINOR AMOUNT OF AN ALIPHATIC ALCOHOL CONTAINING OXYGEN ONLY IN HYDROXYL GROUPS AND CONTAINING 10 TO 25 CARBON ATOMS PER MOLECULE, SAID ALIPHATIC ALCOHOL DEACTIVATING RESIDUAL CATALYST, IN THE POLYMER AND IMPROVING THE EXTRUDABILITY THEREOF.
Claim 4
Dependent Claim
98 words
IN THE POLYMERIZATION PROCESS COMPRISING CONTACTING A MEMBER SELECTED FROM THE GROUP CONSISTING OF ETHYLENE AND MIXTURES OF ETHYLENE WITH OTHER 1-OLEFINS WITH A SUSPENSION OF A CHROMIUM OXIDE:CONTAINING CATALYST IN A LIQUID HYDROCARON AT A TEMPERATURE SUCH THAT SUBSTANTIALLY ALL OF THE POLYMER PRODUCED IS INSOLUBLE IN SAID LIQUID HYDROCARBON AND IS DIFFICULTY EXTRUDABLE, THE IMPROVEMENT COMPRISING ADDING TO THE POLYMER A MINOR AMOUNT OF AN ALIPHATIC ALCOHOL CONTAINING OXYGEN ONLY IN HYDROXYL GROUPS AND CONTAINING 10 TO 25 CARBON ATOMS PER MOLECULE, SAID ALIPHATIC ALCOHOL DEACTIVATING RESIDUAL CATALYST, IN THE POLYMER AND IMPROVING THE EXTRUDABILITY THEREOF.
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) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |