Patent US3429910A successfully refreshed from Google Patents.
US3429910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of peroxydicarbonates
Assignee: Hoechst AG
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Filing: 1966-11-07
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Granted: 1969-02-25
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Expires: 1986-11-07
Abstract
No abstract record available.
Inventors
- 👤 Michael Lederer
- 👤 Heinrich Lenzmann
- 👤 Siegfried Wagener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:53
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/04; B01D11/0426; B01D11/0438; C; C07; C07C; C07C407/00; C07C407/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
IN A PROCESS FOR THE CONTINUOUS MANUFACTURE OF SOLUTIONS OF PEROXYDICARBONATES OF THE GENERAL FORMULA RO-CO-OO-CO-OR IN WHICH R IS AN ALKYL, CHLOROALKYL, ALKENYL OR CHLOROALKENYL GROUP WITH 1 TO 9 CARBON ATOMS, A CHLOROCARBONIC ACID ESTER OF THE GENERAL FORMULA CL-CO-OR IN WHICH R HAS THE MEANING GIVEN ABOVE IS REACTED WITH HYDROGEN PEROXIDE AND AN ALKALI METAL HIDROXIDE SOLUTION AT A TEMPERATURE IN THE RAGE OF -10 TO +30*C., THE MAJOR PART OF THE REACTANTS IS REACTED IN A FIRST REACTION ZONE AT A PH RANGING FROM 8 TO 14 WITH INTIMATE MIXING, THE DISPERSION OBTAINED IS TRANSFERRED INTO AN AFTER-REACTION ZONE IN WHICH THE REACTION IS TERMINATED AND THE PEROXYDICARBONATE OBTAINED IS TAKEN UP IN A HYDROGEN-FREE, HALOGEN-CONTAINING ORGANIC SOLVENT OR A HALOGEN-FREE HYDROCARBON THAT IS LIQUID UNDER NORMAL CONDITIONS, THE IMPROVEMENT OF PERFORMING THE PURIFICATION AND ISOLATION OF THE PEROXIDE SOLUTION IN LA COLUMN WITH VIBRATORY PLATES, SAID PLATESS BEING MAINTAINED IN VERTICAL UPWARD AND DOWNWARD MOTION.
Claim 2
Dependent Claim
161 words
IN A PROCESS FOR THE CONTINUOUS MANUFACTURE OF SOLUTIONS OF PEROXYDICARBONATES OF THE GENERAL FORMULA RO-CO-OO-CO-OR IN WHICH R IS AN ALKYL, CHLOROALKYL, ALKENYL OR CHLOROALKENYL GROUP WITH 1 TO 9 CARBON ATOMS, A CHLOROCARBONIC ACID ESTER OF THE GENERAL FORMULA CL-CO-OR IN WHICH R HAS THE MEANING GIVEN ABOVE IS REACTED WITH HYDROGEN PEROXIDE AND AN ALKALI METAL HIDROXIDE SOLUTION AT A TEMPERATURE IN THE RAGE OF -10 TO +30*C., THE MAJOR PART OF THE REACTANTS IS REACTED IN A FIRST REACTION ZONE AT A PH RANGING FROM 8 TO 14 WITH INTIMATE MIXING, THE DISPERSION OBTAINED IS TRANSFERRED INTO AN AFTER-REACTION ZONE IN WHICH THE REACTION IS TERMINATED AND THE PEROXYDICARBONATE OBTAINED IS TAKEN UP IN A HYDROGEN-FREE, HALOGEN-CONTAINING ORGANIC SOLVENT OR A HALOGEN-FREE HYDROCARBON THAT IS LIQUID UNDER NORMAL CONDITIONS, THE IMPROVEMENT OF PERFORMING THE PURIFICATION AND ISOLATION OF THE PEROXIDE SOLUTION IN LA COLUMN WITH VIBRATORY PLATES, SAID PLATESS BEING MAINTAINED IN VERTICAL UPWARD AND DOWNWARD MOTION.
References Cited (Backward Citations)
US3377373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |