US4065402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tall oil defoamer for high strength acid media
Assignee: Cities Service Co
•
Filing: 1976-04-29
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Granted: 1977-12-27
•
Expires: 1996-04-29
Abstract
Abstract A defoamer for controlling the foam in high strength acid media and process for preparing same having a majority of a sulfonated tall oil and 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 10:19
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
54 words
A defoamer for controlling the foam in high strength acid media comprising a majority of a fatty acid and a minority of a long chain alcohol, said alcohol having from about 4 to about 20 carbon atoms, and the ratio of said alcohol to said fatty acid is from about 0.025:1 to about 0.75:1.
Claim 2
Dependent Claim
54 words
A defoamer for controlling the foam in high strength acid media comprising a majority of a fatty acid and a minority of a long chain alcohol, said alcohol having from about 4 to about 20 carbon atoms, and the ratio of said alcohol to said fatty acid is from about 0.025:1 to about 0.75:1.
Claim 3
Dependent Claim
31 words
The defoamer of claim 1 wherein said fatty acid is sulfonated and comprises a formula of C n H 2n+1 COOH where n is an integer of from 1 to 38.
Claim 4
Dependent Claim
35 words
The defoamer of claim 1 wherein said fatty acid includes at least one double bond and comprises a formula of C n H 2n-1 COOH where n is an integer of from 10 to 30.
Claim 5
Dependent Claim
13 words
The defoamer of claim 3 wherein said fatty acid additionally comprises resin acid.
Claim 6
Dependent Claim
25 words
The defoamer of claim 4 wherein said resin acid comprises a majority of abietic acid having the formula C 20 H 30 O 2 .
Claim 7
Dependent Claim
26 words
The defoamer of claim 5 wherein said fatty acid and resin acid mixture comprises from about .1 wt% to about 99.9 wt% of said resin acid.
Claim 8
Dependent Claim
22 words
The defoamer of claim 6 wherein said fatty acid comprises oleic acid having the formula C 18 H 34 O 2 .
Claim 9
Dependent Claim
29 words
The defoamer of claim 1, wherein said fatty acid is sulfonated and comprises a sulfonation ratio of SO 3 to fatty acid of from approximately 0.025:1 to about 0.6:1.
Claim 10
Dependent Claim
26 words
The defoamer of claim 8, wherein said long chain alcohol comprises a branched chain alcohol of from approximately 8 carbon atoms to about 14 carbon atoms.
Claim 11
Dependent Claim
27 words
The defoamer of claim 8, wherein said long chain alcohol comprises a branched cyclic chain alcohol of from approximately 8 carbon atoms to about 14 carbon atoms.
Claim 12
Dependent Claim
25 words
The defoamer of claim 8, wherein said long chain alcohol comprises a linear alcohol of from approximately 8 carbon atoms to about 14 carbon atoms.
Claim 13
Dependent Claim
23 words
The defoamer of claim 8, wherein said fatty acid is sulfonated at a temperature of from between about -20° to about 212° F.
Claim 14
Dependent Claim
23 words
The defoamer of claim 12, wherein said ratio of said alcohol to said sulfonated fatty acid is from approximately 0.025:1 to about 0.50:1.
Claim 15
Dependent Claim
34 words
The defoamer of claim 8, wherein said SO 3 additionally comprises SO 2 , said mixture of SO 3 and SO 2 being mixed in a ratio of from approximately 1:1 to about 1:10.
Claim 16
Dependent Claim
59 words
A process for preparing a defoamer for controlling the foam in high strength acid media comprising mixing a majority of a fatty acid and a minority of a long chain alcohol, said alcohol having from about 4 to about 20 carbon atoms, and the ratio of said alcohol to said fatty acid is from about 0.025:1 to about 0.75:1.
Claim 17
Dependent Claim
59 words
A process for preparing a defoamer for controlling the foam in high strength acid media comprising mixing a majority of a fatty acid and a minority of a long chain alcohol, said alcohol having from about 4 to about 20 carbon atoms, and the ratio of said alcohol to said fatty acid is from about 0.025:1 to about 0.75:1.
Claim 18
Dependent Claim
31 words
The process of claim 15 wherein said fatty acid is sulfonated and comprises a formula of C n H 2n+1 COOH where n is an integer of from 1 to 38.
Claim 19
Dependent Claim
35 words
The process of claim 15 wherein said fatty acid includes at least one double bond and comprises a formula of C n H 2n-1 COOH where n is an integer of from 10 to 30.
Claim 20
Dependent Claim
13 words
The process of claim 17 wherein said fatty acid additionally comprises resin acid.
Claim 21
Dependent Claim
25 words
The process of claim 18 wherein said resin acid comprises a majority of abietic acid having the formula C 20 H 30 O 2 .
Claim 22
Dependent Claim
26 words
The process of claim 19 wherein said fatty acid and resin acid mixture comprises from about 0.1 wt% to about 99.9 wt% of said resin acid.
Claim 23
Dependent Claim
22 words
The process of claim 20 wherein said fatty acid comprises oleic acid having the formula C 18 H 34 O 2 .
Claim 24
Dependent Claim
25 words
The process of claim 15, wherein said long chain alcohol comprises a linear alcohol of from approximately 8 carbon atoms to about 14 carbon atoms.
Claim 25
Dependent Claim
26 words
The process of claim 15 wherein said long chain alcohol comprises a branched chain alcohol of from approximately 8 carbon atoms to about 14 carbon atoms.
Claim 26
Dependent Claim
29 words
The process of claim 15, wherein said fatty acid is sulfonated and comprises a sulfonation ratio of SO 3 to fatty acid of from approximately 0.025:1 to about 0.6:1.
Claim 27
Dependent Claim
35 words
The process of claim 24 additionally including mixing SO 2 with said SO 3 , said mixture of SO 3 and SO 2 being mixed in a ratio of from approximately 1:1 to about 1:10.
Claim 28
Dependent Claim
22 words
The process of claim 25, wherein said sulfonation is performed at a temperature of between about -20° F. to about 212° F.
Claim 29
Dependent Claim
25 words
The process of claim 26, wherein said mixture of oil, SO 3 , and SO 2 is allowed to react for at least 15 minutes.
Claim 30
Dependent Claim
23 words
The process of claim 27, wherein the ratio of said alcohol to said sulfonated fatty acid is from approximately 0.25:1 to about 0.50:1.
Claim 31
Dependent Claim
40 words
The process of claim 26 additionally comprising agitating said mixture of sulfonated fatty acid and alcohol for at least 15 minutes immediately after adding said alcohol to insure complete dispersion of the acid sludge resulting from sulfonation of the oil.
Claim 32
Dependent Claim
27 words
The process of claim 15, wherein said long chain alcohol comprises a branched cyclic chain alcohol of from approximatey 8 carbon atoms to about 14 carbon atoms.
Claim 33
Dependent Claim
53 words
A defoamer for controlling the foam in high strength acid media comprising a majority of a tall oil and a minority of a long chain alcohol, said alcohol having from about 4 to about 20 carbon atoms, and the ratio of alcohol to said tall oil is from about 0.025:1 to about 0.75:1.
Claim 34
Dependent Claim
53 words
A defoamer for controlling the foam in high strength acid media comprising a majority of a tall oil and a minority of a long chain alcohol, said alcohol having from about 4 to about 20 carbon atoms, and the ratio of alcohol to said tall oil is from about 0.025:1 to about 0.75:1.
Claim 35
Dependent Claim
29 words
The defoamer of claim 31 wherein said tall oil is sulfonated and comprises a sulfonation ratio of SO 3 to tall oil of from approximately 0.025:1 to about 0.6:1.
Claim 36
Dependent Claim
26 words
The defoamer of claim 32, wherein said long chain alcohol comprises a branched chain alcohol of from approximately 8 carbon atoms to about 14 carbon atoms.
Claim 37
Dependent Claim
27 words
The defoamer of claim 32, wherein said long chain alcohol comprises a branched cyclic chain alcohol of from approximately 8 carbon atoms to about 14 carbon atoms.
Claim 38
Dependent Claim
25 words
The defoamer of claim 32, wherein said long chain alcohol comprises a linear alcohol of from approximately 8 carbon atoms to about 14 carbon atoms.
Claim 39
Dependent Claim
23 words
The defoamer of claim 32, wherein said tall oil is sulfonated at a temperature of from between about -20° to about 212° F.
Claim 40
Dependent Claim
23 words
The defoamer of claim 36 wherein said ratio of said alcohol to said sulfonated tall oil is from approximately 0.25:1 to about 0.50:1.
Claim 41
Dependent Claim
34 words
The defoamer of claim 32, wherein said SO 3 additionally comprises SO 2 , said mixture of SO 3 and SO 2 being mixed in a ratio of from approximately 1:1 to about 1:10.
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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) | 1980-12-26 | 1981-06-27 | 1981-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-26 | 1985-06-27 | 1985-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-26 | 1989-06-27 | 1989-12-27 | $7700.00 | Window Closed / Lapsed |