US3560403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Persistent antifoam compositions and methods of making same utilizing dialkylamino organosilicone fluids
Assignee: Union Carbide Corp
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Filing: 1967-08-11
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Granted: 1971-02-02
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Expires: 1987-08-11
Abstract
Abstract ANTIFOAM COMPOSITIONS HAVING PERSISTENT EFFECTIVENESS ESPECIALLY IN AQUEOUS ALKALINE MEDIUM, SAID COMPOSITIONS BEING A MIXTURE CONTAINING AN ORGANOSILOXANE LIQUID POLYMER OR OTHER NON-AQUEOUS LIQUID, SUCH AS, A HYDROCARBON OIL OR A POLYOXYALKYLENE GLYCOL, AND A HYDROXYL CONTAINING, FINELY DIVIDED, INORGANIC FILLER, SUCH AS, SILICA, ALUMINUM OXIDE AND TITANIUM DIOXIDE, REACTED WITH A DIALKYLAMINO ORGANOSILICONE FLUID, SUCH AS THOSE OF THE FORMULA (R''2N)X(SIR2O)NSIR2(R)2-X WHEREIN X IS 1 TO 2, N IS O TO 40 AND R IS AN ALKYL GROUP HAVING 1 TO 10 CARBON ATOMS AND R'' IS AN ALKYL GROUP HAVING 1 TO 3 CARBON ATOMS.
Inventors
- 👤 Matthew J O'hara
- 👤 Donald R Rink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:00
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; B01D19/0409
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |