US3772355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of tertiary butylates
Assignee: Novartis AG
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Filing: 1971-08-06
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Granted: 1973-11-13
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Expires: 1991-08-06
Abstract
Abstract A PROCESS FOR THE MANUFACTURE OF METAL TERTIARY BUTYLATES IS PROVIDED. METAL ALCOHOLATES OF METALS OF THE SUBGROUPS IVB, VB OR VIB OF THE PERIODIC SYSTEM OF ELEMENTS ARE REACTED WITH AN EXCESS OF TERTIARY BUTANOL AT REFLUX TEMPERATURE OF THE REACTION MIXTURE AND THE SOLVENT IS SLOWLY DISTILLED OF SIMULTANEOUSLY OR ONLY AFTER A CERTAIN TIME OF REFLUXING OR IN PORTIONS DURING THE WHOLE REACTION TIME. THE METAL TERTIARY BUTLATES OBTAINED ARE KNOWN CROSSLINKING CURING AND POLYMERISATION CATALYSTS.
Inventors
- 👤 J Merz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:04
CPC Classifications
C; C07; C07C; C07C31/00; C07C31/28; C07C29/00; C07C29/68; C07C29/70
Claims Analysis
Total Claims: 0
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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) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |