Patent US3299186A successfully refreshed from Google Patents.
US3299186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Melt blending of polyolefins
Assignee: Phillips Petroleum Co
•
Filing: 1965-03-29
•
Granted: 1967-01-17
•
Expires: 1985-03-29
Abstract
No abstract record available.
Inventors
- 👤 Robert G Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:30
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/005; C08J2323/00; C08J2323/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A PROCESS FOR BLENDING A FIRST OLEFIN POLYMER OF A GIVEN MELT INDEX WITH A SECOND OLEFIN POLYMER OF A SIGNIFICANTLY DIFFERENT MELT INDEX WHICH COMPRISES: (A) CHARGING WATER AND SAID FIRST AND SECOND OLEFIN POLYMERS INTO A MIXING ZONE COMPRISING A CONFINED WORKING SPACE WHEREIN THE POLYMERS ARE SUBJECTED TO INTENSE MIXING ACTION, THE WATER BEING ADDED IN AN AMOUNT IN THE RANGE OF 0.1-5 WEIGHT PARTS WATER PER 100 WEIGHT PASTS OF POLYMER TO BE BLENDED; (B) SUBJECTING THE RESULTING MIXTURE OF FIRST AND SECOND OLEFIN POLYMERS AND WATER TO AN INTENSE MIXING ACTION AT A TEMPERATURE BETWEEN 285 AND 340*F.; (C) VENTING VAPORIZED WATER FROM SAID MIXING ZONE; AND (D) THEREAFTER RECOVERING THE RESULTING BLENDD OF SAID FIRST AND SECOND OLEFIN POLYMERS FROM SAID MIXING ZONE.
Claim 2
Dependent Claim
129 words
A PROCESS FOR BLENDING A FIRST OLEFIN POLYMER OF A GIVEN MELT INDEX WITH A SECOND OLEFIN POLYMER OF A SIGNIFICANTLY DIFFERENT MELT INDEX WHICH COMPRISES: (A) CHARGING WATER AND SAID FIRST AND SECOND OLEFIN POLYMERS INTO A MIXING ZONE COMPRISING A CONFINED WORKING SPACE WHEREIN THE POLYMERS ARE SUBJECTED TO INTENSE MIXING ACTION, THE WATER BEING ADDED IN AN AMOUNT IN THE RANGE OF 0.1-5 WEIGHT PARTS WATER PER 100 WEIGHT PASTS OF POLYMER TO BE BLENDED; (B) SUBJECTING THE RESULTING MIXTURE OF FIRST AND SECOND OLEFIN POLYMERS AND WATER TO AN INTENSE MIXING ACTION AT A TEMPERATURE BETWEEN 285 AND 340*F.; (C) VENTING VAPORIZED WATER FROM SAID MIXING ZONE; AND (D) THEREAFTER RECOVERING THE RESULTING BLENDD OF SAID FIRST AND SECOND OLEFIN POLYMERS FROM SAID MIXING ZONE.
References Cited (Backward Citations)
US2582327A
Cited
US3179719A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |