US3899401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical production of pinacols
Assignee: BASF SE
•
Filing: 1974-08-19
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Granted: 1975-08-12
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Expires: 1994-08-19
Abstract
Abstract Pinacols are prepared by electrolytic hydrodimerization of carbonyl compounds in non-compartmented cells using a mixture of from 5 to 75% by weight of the carbonyl compound, from 5 to 90% by weight of the alcohol corresponding to the carbonyl compound, from 0.1 to 3% by weight of a quaternary ammonium salt and from 0 to 30% by weight of water.
Inventors
- 👤 Heinz Nohe
- 👤 Fritz Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:54
CPC Classifications
C; C25; C25B; C25B3/00; C25B3/20; C25B3/29; C25B3/295; C25B3/01; C25B3/07
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
10 words
A PROCESS FOR THE MANUFACTURE OF PINACOLS OF THE FORMULA
Claim 2
Dependent Claim
10 words
A PROCESS FOR THE MANUFACTURE OF PINACOLS OF THE FORMULA
Claim 3
Dependent Claim
34 words
A process as claimed in claim 1, wherein the mixture used for the electrolysis in addition contains from 1 to 30% by weight of dioxan and/or from 5 to 70% by weight of methanol.
Claim 4
Dependent Claim
15 words
A process as claimed in claim 1, wherein acetone is used as the carbonyl compound.
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) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |