US3098884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing olefin polymers
Assignee: Sinclair Research Inc
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Filing: 1959-07-22
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Granted: 1963-07-23
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Expires: 1979-07-22
Abstract
No abstract record available.
Inventors
- 👤 Willis C Keith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:27
CPC Classifications
C; C07; C07C; C07C4/00; C07C11/00; C07C11/02; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/10; C07C4/22; C07C2521/00; C07C2521/12; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN A PROCESS FOR PRODUCING OLEFIN POLYMERS WHICH COMPRISES POLYMERIZING IN THE LIQUID PHASE, MONOOLEFINS IN THE C5-C12 RANGE TO DIMERIZE THE MONOOLEFINS BY CONTACT WITH A CATALYST CONSISTING ESSENTIALLY OF SILICA-ALUMINA AT A TEMPERATURE OF ABOUT 200 TO 375* V., SEPARATING THE DIMER FROM THE REACTION PRODUCTS AND DEPOLYMERIZING IN THE LIQUID PHASE TE OLEFIN POLYMER BOILING ABOVE SAID DIMER BY CONTACT WITH A CATALYST CONSISTING ESSENTIALLY OF SILICA-ALUMINA AT A TEMPERATURE FROM ABOUT 350 TO 550* F. SUBSTANTIALLY AL MATERIAL CONVERTED IN SAID DEPOLYMERIZATION BEING TRANSFRMED INTO LOWER BOILING LIQUID MATERIAL INCLUDING THE DIMER AND SEPARATING THE DIMER PRODUCT.
Claim 2
Dependent Claim
101 words
IN A PROCESS FOR PRODUCING OLEFIN POLYMERS WHICH COMPRISES POLYMERIZING IN THE LIQUID PHASE, MONOOLEFINS IN THE C5-C12 RANGE TO DIMERIZE THE MONOOLEFINS BY CONTACT WITH A CATALYST CONSISTING ESSENTIALLY OF SILICA-ALUMINA AT A TEMPERATURE OF ABOUT 200 TO 375* V., SEPARATING THE DIMER FROM THE REACTION PRODUCTS AND DEPOLYMERIZING IN THE LIQUID PHASE TE OLEFIN POLYMER BOILING ABOVE SAID DIMER BY CONTACT WITH A CATALYST CONSISTING ESSENTIALLY OF SILICA-ALUMINA AT A TEMPERATURE FROM ABOUT 350 TO 550* F. SUBSTANTIALLY AL MATERIAL CONVERTED IN SAID DEPOLYMERIZATION BEING TRANSFRMED INTO LOWER BOILING LIQUID MATERIAL INCLUDING THE DIMER AND SEPARATING THE DIMER PRODUCT.
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) | 1966-07-22 | 1967-01-21 | 1967-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-22 | 1971-01-21 | 1971-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-22 | 1975-01-21 | 1975-07-23 | $7700.00 | Window Closed / Lapsed |