Crystalline hydrogensulfates of quaternary ammonium compounds and their use
Abstract
Abstract CRYSTALLIZED HYDROGENSULFATES OF QUATERNARY AMMONIUM COMPOUNDS DESCRIBED BY THE GENERAL FORMULA (R1)3R2N+HSO4- WHEREIN R2 IS SELECTED FROM THE GROUP CONSISTING OF SATURATED ALKYL GROUPS HAVING FROM 3 TO 6 CARBON ATOMS AND ARYL, PREFERABLY PHENYL OR MONOSUBSTITUTED PHENYL AND R1 IS SELECTED FROM THE GROUP CONSISTING OF SATURATED ALKYL GROUPS HAVING FROM 1 TO 6 CARBON ATOMS PROVIDED THAT WHEN R2 IS AN ALKYL GROUP HAVING FROM 3 TO 6 CARBON ATOMS, R1 MUST BE AN ALKYL GROUP HAVING FROM 3 TO 6 CARBON ATOMS. SUCH COMPOUNDS ARE USEFUL IN CHEMICAL AND PHYSICAL-CHEMICAL OPERATIONS IN ANALYTICAL AND PREPARATIVE ORGANIC CHEMISTRY, E.G. IN ION-PAIR EXTRACTIONS AND A ENFORCING ELECTROLYTE IN POLARGRAPHY AND SYNTHETIC ELECTROCHEMISTRY. METHODS FOR THEIR PREPARATION AND FOR CARRYING OUT ION-PAIR EXTRACTIONS ARE ALSO DESCRIBED.
Inventors
- 👤 A Brandstrom
- 👤 B Lamm
- 👤 K Gustavii
- 👤 U Junggren
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |