Patent US5015817A successfully refreshed from Google Patents.
US2917470A
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Process of producing polyolefin oxides with metallic sulfate catalysts
Assignee: Dow Chemical Co
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Filing: 1958-06-26
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Granted: 1959-12-15
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Expires: 1978-06-26
Abstract
No abstract record available.
Inventors
- 👤 Wilbur L Bressler
- 👤 Arthur E Gurgiolo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:57
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2642; C08G65/2645; C08G65/2651
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
THE PROCESS OF MAKING HIGH MOLECULAR WEIGHT POLYOLEFINE OXIDES WHICH COMPRISES CONTACTING AT LEAST ONE OLEFINE OXIDE WITH FROM 0.01 TO 5.0 PERCENT BY WEIGHT BASED ON THE OLEFIN OXIDE, OF A DIVELENT METALLIC SULFATE, SAID METALLIC SULFATE BEING A SULFATE OF A DIVALENT METAL HAVING ATOMIC NUMBER OF FROM 1I TO 56, INCLUSIVE, AT A TEMPEREATURE OF FROM ABOUT 40* TO ABOUT 170*C. FOR A TIME SUFFICIENT SUBSTANTIALLY TO COMPLETE POLYMERIZATION AND SEPARATING A SOLID PLASTIC POLYLEFINE OXIDE FROM THE RESULTING PRODUCT.
Claim 2
Dependent Claim
83 words
THE PROCESS OF MAKING HIGH MOLECULAR WEIGHT POLYOLEFINE OXIDES WHICH COMPRISES CONTACTING AT LEAST ONE OLEFINE OXIDE WITH FROM 0.01 TO 5.0 PERCENT BY WEIGHT BASED ON THE OLEFIN OXIDE, OF A DIVELENT METALLIC SULFATE, SAID METALLIC SULFATE BEING A SULFATE OF A DIVALENT METAL HAVING ATOMIC NUMBER OF FROM 1I TO 56, INCLUSIVE, AT A TEMPEREATURE OF FROM ABOUT 40* TO ABOUT 170*C. FOR A TIME SUFFICIENT SUBSTANTIALLY TO COMPLETE POLYMERIZATION AND SEPARATING A SOLID PLASTIC POLYLEFINE OXIDE FROM THE RESULTING PRODUCT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |