US2934505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for polymerization of alkylene oxides with metal salts
Assignee: Dow Chemical Co
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Filing: 1958-07-22
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Granted: 1960-04-26
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Expires: 1978-07-22
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Gurgiolo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:24
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2642; C08G65/2645
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A PROCESS FOR THE POLYMERIZATION OF A LOWER ALKYLENE OXIDE CONTAINING NOT MORE THAN 4 CARBON ATOMS IN ITS MOLECULE TO A POLYMERIC MATERIAL, WHICH COMPRISES MIXING THE ALKYLENE OXIDE WITH FROM 0.1 TO 6 WEIGHT PERCENT OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF SALTS OF UNSUBSTITUTED FATTY ACIDS HAVING FROM 1 TO 6 CARBON ATOMS AND UNSUBSTITUTE ALPHATIC DI- AND TRICARBOXYLIC ACIDS HAVING UP TO 30 CARBON ATOMS AND UNSUBSTITUTED AROMATIC MOMO- AND DICARBOXYLIC ACIDS HAVING UP TO 3 AROMATIC RINGS OF GROUP II METALS HAVING AN ATOMIC NUMBER IN THE RANGE OF 12 TO 57, HEATING THE RESULTING MIXTURE TO A TEMPERATURE OF FROM 30* TO 150*C. FOR A PERIOD OF TIME SUFFICIENT TO POLYMERIZE THE OLEFIN OXIDE, AND SEPARATING THE POLYMERIC MATERIAL FROM THE REACTION MASS.
Claim 2
Dependent Claim
131 words
A PROCESS FOR THE POLYMERIZATION OF A LOWER ALKYLENE OXIDE CONTAINING NOT MORE THAN 4 CARBON ATOMS IN ITS MOLECULE TO A POLYMERIC MATERIAL, WHICH COMPRISES MIXING THE ALKYLENE OXIDE WITH FROM 0.1 TO 6 WEIGHT PERCENT OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF SALTS OF UNSUBSTITUTED FATTY ACIDS HAVING FROM 1 TO 6 CARBON ATOMS AND UNSUBSTITUTE ALPHATIC DI- AND TRICARBOXYLIC ACIDS HAVING UP TO 30 CARBON ATOMS AND UNSUBSTITUTED AROMATIC MOMO- AND DICARBOXYLIC ACIDS HAVING UP TO 3 AROMATIC RINGS OF GROUP II METALS HAVING AN ATOMIC NUMBER IN THE RANGE OF 12 TO 57, HEATING THE RESULTING MIXTURE TO A TEMPERATURE OF FROM 30* TO 150*C. FOR A PERIOD OF TIME SUFFICIENT TO POLYMERIZE THE OLEFIN OXIDE, AND SEPARATING THE POLYMERIC MATERIAL FROM THE REACTION MASS.
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) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |