US3349044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for polymerization of vic-epoxy compounds with aluminum hydrocarbyl-salicylic acid catalysts
Assignee: Shell USA Inc
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Filing: 1964-03-23
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Granted: 1967-10-24
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Expires: 1984-03-23
Abstract
No abstract record available.
Inventors
- 👤 Ernst L Th M Spitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:53
CPC Classifications
C; C08; C08G; C08G2/00; C08G2/06; C08G2/08; C08G2/12; C08G2/14; C08G2/16; C08G2/18; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/08; C08G65/10; C08G65/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A PROCESS FOR THE POLYMERIZATION OF EQOXIDE COMPOUNDS WHICH COMPRISES POLYMERIZING MONOMERIC HALOGEN-SUBSTITUTED VIC-EPOXY COMPOUNDS AT ABOUT -80*C. TO ABOUT +150*C. IN THE PRESENCE OF A CATALYST COMPRISING AN ALUMINUM HYDROCARBYL COMPOUND AND A HYDROCARBYL-SUBSTITUTED SALICYLIC ACID, SAID ACID HAVING AT LEAST ONE HYDROCARBYL SUBSTITUENT DIRECTLY ATTACHED TO THE AROMATIC NUCLEUS OF THE ACID, THEMOLAR RATIO OF HYDROCARBYLSUBSTITUTED SALICYLIC ACID TO ALUMINUM COMPOUND BEING BETWEEN ABOUT 0.1 AND 2.1.
Claim 2
Dependent Claim
69 words
A PROCESS FOR THE POLYMERIZATION OF EQOXIDE COMPOUNDS WHICH COMPRISES POLYMERIZING MONOMERIC HALOGEN-SUBSTITUTED VIC-EPOXY COMPOUNDS AT ABOUT -80*C. TO ABOUT +150*C. IN THE PRESENCE OF A CATALYST COMPRISING AN ALUMINUM HYDROCARBYL COMPOUND AND A HYDROCARBYL-SUBSTITUTED SALICYLIC ACID, SAID ACID HAVING AT LEAST ONE HYDROCARBYL SUBSTITUENT DIRECTLY ATTACHED TO THE AROMATIC NUCLEUS OF THE ACID, THEMOLAR RATIO OF HYDROCARBYLSUBSTITUTED SALICYLIC ACID TO ALUMINUM COMPOUND BEING BETWEEN ABOUT 0.1 AND 2.1.
References Cited (Backward Citations)
US2703765A
Cited
US3135706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |