US4145310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Defoamer for high strength acid media
Assignee: Cities Service Co
•
Filing: 1977-08-29
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Granted: 1979-03-20
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Expires: 1997-08-29
Abstract
Abstract A defoamer for controlling the foam in high strength acid media and process for preparing same having a majority of a sulfonated oil and a minority of a long chain alcohol.
Inventors
- 👤 William A. Satterwhite
- 👤 Robert M. Leach
- 👤 Harold A. Stuhler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:29
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
43 words
A defoamer for controlling the foam in high strength acid media comprising: (a) from about 57.1 wt % to about 97.6 wt % of sulfonated petroleum oil; and (b) the balance of an alcohol having from about 4 to about 20 carbon atoms.
Claim 2
Dependent Claim
43 words
A defoamer for controlling the foam in high strength acid media comprising: (a) from about 57.1 wt % to about 97.6 wt % of sulfonated petroleum oil; and (b) the balance of an alcohol having from about 4 to about 20 carbon atoms.
Claim 3
Dependent Claim
23 words
The defoamer of claim 1, wherein said alcohol comprises a linear alcohol of from about 8 carbon atoms to about 14 carbon atoms.
Claim 4
Dependent Claim
20 words
The defoamer of claim 1 wherein said alcohol comprises a branched chain alcohol about 8 carbon atoms to about 14.
Claim 5
Dependent Claim
11 words
The defoamer of claim 2, wherein said alcohol comprises dodecyl alcohol.
Claim 6
Dependent Claim
19 words
The defoamer of claim 2, wherein said sulfonated oil comprises about 66.7 wt % to about 80 wt %.
Claim 7
Dependent Claim
46 words
A process for preparing a defoamer for controlling the foam in high strength acid media comprising mixing from about 57.1 wt % to about 97.6 wt % of a sulfonated petroleum oil with the balance an alcohol having from about 4 to about 20 carbon atoms.
Claim 8
Dependent Claim
46 words
A process for preparing a defoamer for controlling the foam in high strength acid media comprising mixing from about 57.1 wt % to about 97.6 wt % of a sulfonated petroleum oil with the balance an alcohol having from about 4 to about 20 carbon atoms.
Claim 9
Dependent Claim
23 words
The process of claim 6 wherein said alcohol comprises a linear alcohol of from about 8 carbon atoms to about 14 carbon atoms.
Claim 10
Dependent Claim
24 words
The process of claim 6 wherein said alcohol comprises a branched chain alcohol of from about 8 carbon atoms to about 14 carbon atoms.
Claim 11
Dependent Claim
11 words
The process of claim 7 wherein said alcohol is dodecyl alcohol.
Claim 12
Dependent Claim
20 words
The process of claim 6 wherein said sulfonated oil comprises from about 66.7 wt % to about 80 wt %.
Claim 13
Dependent Claim
38 words
The process of claim 6 additionally comprising agitating said mixture of sulfonated oil and alcohol for at least 15 minutes immediately after adding said alcohol to insure complete dispersion of acid sludge resulting from sulfonation of the oil.
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) | 1982-03-19 | 1982-09-18 | 1983-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-19 | 1986-09-18 | 1987-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-19 | 1990-09-18 | 1991-03-20 | $7700.00 | Window Closed / Lapsed |