US4190510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the electrophoretic breaking of emulsions
Assignee: Bayer AG
•
Filing: 1979-02-07
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Granted: 1980-02-26
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Expires: 1999-02-07
Abstract
Abstract A process for the electrophoretic breaking of electrically conductive emulsions of electrical conductivity greater than 2,000 μMhos is described which process comprises adjusting the conductivity of the emulsion so that it is in the range of 0.1 to 2,000 μMhos by increasing the degree of dispersion and thereafter passing through the emulsion a constant-voltage field of 100 to 1,000 volts.
Inventors
- 👤 Wolfgang Larbig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:28
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/46; C02F1/469; C02F1/4696; B; B01; B01D; B01D17/00; B01D17/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
54 words
A process for electrophoretic breaking of electrically conductive emulsions of electrical conductivity greater than 2,000 μMhos which comprises adjusting the conductivity of said emulsion to a value in the range from 0.1 to 2,000 μMhos by increasing the dispersion of said emulsion and thereafter passing therethrough a constant-voltage field of 100 to 1,000 volts.
Claim 2
Dependent Claim
54 words
A process for electrophoretic breaking of electrically conductive emulsions of electrical conductivity greater than 2,000 μMhos which comprises adjusting the conductivity of said emulsion to a value in the range from 0.1 to 2,000 μMhos by increasing the dispersion of said emulsion and thereafter passing therethrough a constant-voltage field of 100 to 1,000 volts.
Claim 3
Dependent Claim
25 words
A process according to claim 1 wherein the electrical conductivity of the emulsions adjusted to be in the range of from 1 to 1,000 μMhos.
Claim 4
Dependent Claim
27 words
A process according to claim 1 wherein the electrical conductivity of the emulsion is adjusted to a value in the range of from 5 to 500 μMhos.
Claim 5
Dependent Claim
28 words
A process according to claim 1 wherein the degree of dispersion of the emulsion is increased by stirring, circulatory pumping or by the application of ultrasonic waves thereto.
Claim 6
Dependent Claim
20 words
A process according to claim 1 wherein an emulsifier is added to the emulsion to increase the degree of dispersion.
Claim 7
Dependent Claim
19 words
A process according to claim 1 wherein the emulsion comprises a mixture of crude nitrobenzene and waste sulphuric acid.
Claim 8
Dependent Claim
14 words
A process according to claim 1 wherein said emulsion comprises phosphoric acid and nitrobenzene.
Claim 9
Dependent Claim
14 words
A process according to claim 1 wherein said emulsion comprises phosphoric acid and 2-ethylhexanol.
Claim 10
Dependent Claim
14 words
A process according to claim 1 wherein said emulsion comprises sodium hydroxide and 2-ethylhexanol.
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) | 1983-02-25 | 1983-08-27 | 1984-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-25 | 1987-08-27 | 1988-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-25 | 1991-08-27 | 1992-02-26 | $7700.00 | Window Closed / Lapsed |