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US4151101A
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Method and composition for controlling foam in non-aqueous fluid systems
Assignee: Stauffer Chemical Co
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Filing: 1977-12-23
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Granted: 1979-04-24
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Expires: 1997-12-23
Abstract
Abstract An improved method and composition for controlling foam in non-aqueous fluid systems having a tendency to foam. The improved method consists of adding to the system a foam control composition containing an organo-silicone antifoam agent and an alkanolamide. A method is also provided for inhibiting foam formation in such non-aqueous fluid systems by adding to the system an alkanolamide.
Inventors
- 👤 Joseph F. Anzenberger, Sr.
- 👤 Michael P. Silvon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:13
CPC Classifications
C; C10; C10M; C10M171/00; C10M171/004; C10M161/00; C10M2205/00; C10M2205/22; C10M2207/00; C10M2207/04; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/103; C10M2209/105; C10M2215/00; C10M2215/08; C10M2215/082; C10M2215/24; C10M2215/28; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2227/00; C10M2227/02; C10M2227/04; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/042; C10M2229/045; C10M2229/046; C10M2229/047; C10M2229/048; C10M2229/05; C10N; C10N2020/00; C10N2020/01
Claims Analysis
Total Claims: 60
Claim 1
Independent Claim
75 words
A method of enhancing the foam inhibiting characteristics of a foam control composition containing an organo-silicone antifoam agent comprising adding to the composition an enhancing amount of an alkanolamide having the structure: ##STR5## wherein R 1 is a hydrocarbon group containing from 6 to 26 carbon atoms, R 2 is an hydroxy substituted alkyl of 1 to 6 carbon atoms and R 3 is hydrogen or hydroxy substituted alkyl of 1 to 6 carbon atoms.
Claim 2
Independent Claim
75 words
A method of enhancing the foam inhibiting characteristics of a foam control composition containing an organo-silicone antifoam agent comprising adding to the composition an enhancing amount of an alkanolamide having the structure: ##STR5## wherein R 1 is a hydrocarbon group containing from 6 to 26 carbon atoms, R 2 is an hydroxy substituted alkyl of 1 to 6 carbon atoms and R 3 is hydrogen or hydroxy substituted alkyl of 1 to 6 carbon atoms.
Claim 3
Dependent Claim
15 words
The method of claim 1, wherein said foam control composition contains a liquid hydrocarbon vehicle.
Claim 4
Dependent Claim
14 words
The method of claim 1, wherein the antifoam agent is a dimethyl silicone compound.
Claim 5
Dependent Claim
11 words
The method of claim 1, wherein the alkanolamide is coconut monoethanolamide.
Claim 6
Dependent Claim
11 words
The method of claim 1, wherein the alkanolamide is lauric monoethanolamide.
Claim 7
Dependent Claim
11 words
The method of claim 1, wherein the alkanolamide is tallow monoethanolamide.
Claim 8
Dependent Claim
11 words
The method of claim 1, wherein the alkanolamide is coconut diethanolamide.
Claim 9
Dependent Claim
20 words
The method of claim 1, wherein the antifoam agent is a dimethyl silicone compound and the alkanolamide is coconut monoethanolamide.
Claim 10
Dependent Claim
25 words
The method of claim 1, wherein the enhancing amount is provided by a weight ratio of alkanolamide to antifoam agent of 0.1:1 to about 10:1.
Claim 11
Dependent Claim
26 words
The method of claim 1, wherein the enhancing amount is provided by a weight ratio of alkanolamide to antifoaming agent of about 0.5:1 to about 5.:1.
Claim 12
Dependent Claim
106 words
An improved non-aqueous fluid composition having a decreased foaming tendency, of the type containing a major portion of a non-aqueous functional fluid which is a synthetic phosphate ester having a tendency to foam and further containing an organo-silicone antifoam agent, wherein the improvement comprises the presence in the composition of an effective amount for decreasing foaming tendency of an alkanolamide having the structure: ##STR6## wherein R 1 is a hydrocarbon group containing from 6 to 26 carbon atoms, R 2 is an hydroxy substituted alkyl of 1 to 6 carbon atoms and R 3 is hydrogen or hydroxy substituted alkyl of 1 to 6 carbon atoms.
Claim 13
Dependent Claim
106 words
An improved non-aqueous fluid composition having a decreased foaming tendency, of the type containing a major portion of a non-aqueous functional fluid which is a synthetic phosphate ester having a tendency to foam and further containing an organo-silicone antifoam agent, wherein the improvement comprises the presence in the composition of an effective amount for decreasing foaming tendency of an alkanolamide having the structure: ##STR6## wherein R 1 is a hydrocarbon group containing from 6 to 26 carbon atoms, R 2 is an hydroxy substituted alkyl of 1 to 6 carbon atoms and R 3 is hydrogen or hydroxy substituted alkyl of 1 to 6 carbon atoms.
Claim 14
Dependent Claim
12 words
The composition of claim 11, wherein the antifoam agent contains dimethyl silicone.
Claim 15
Dependent Claim
11 words
The composition of claim 11, wherein the alkanolamide is coconut monoethanolamide.
Claim 16
Dependent Claim
11 words
The composition of claim 11, wherein the alkanolamide is lauric monoethanolamide.
Claim 17
Dependent Claim
11 words
The composition of claim 11, wherein the alkanolamide is tallow monoethanolamide.
Claim 18
Dependent Claim
11 words
The composition of claim 11, wherein the alkanolamide is coconut diethanolamide.
Claim 19
Dependent Claim
20 words
The composition of claim 11, wherein the antifoam agent is a methyl silicone compound and the alkanolamide is coconut monoethanolamide.
Claim 20
Dependent Claim
15 words
The composition of claim 17, wherein the synthetic phosphate ester is a triaryl phosphate ester.
Claim 21
Dependent Claim
15 words
The composition of claim 11, wherein the synthetic phosphate ester is a triaryl phosphate ester.
Claim 22
Dependent Claim
15 words
The composition of claim 19, wherein the triaryl phosphate ester is t-butylphenyl phosphate diphenyl phosphate.
Claim 23
Dependent Claim
25 words
The composition of claim 11, wherein the effective amount is provided by a weight ratio of alkanolamide to antifoaming agent of 0.1:1 to about 10.:1.
Claim 24
Dependent Claim
26 words
The composition of claim 11, wherein the effective amount is provided by a weight ratio of alkanolamide to antifoaming agent of about 0.5:1 to about 5.:1.
Claim 25
Dependent Claim
24 words
The composition of claim 11, wherein the effective amount is from about 1 ppm to about 500 ppm by weight of the non-aqueous fluid.
Claim 26
Dependent Claim
24 words
The composition of claim 11, wherein the effective amount is from about 1 ppm to about 100 ppm by weight of the non-aqueous fluid.
Claim 27
Dependent Claim
24 words
The composition of claim 11, wherein the effective amount is from about 5 ppm to about 25 ppm by weight of the non-aqueous fluid.
Claim 28
Dependent Claim
96 words
An improved method of inhibiting the foaming tendency of a non-aqueous fluid system having a tendency to foam, of the type wherein a foam control composition containing an organo-silicone antifoam agent is added to the system, the improvement comprising adding to the system a foam inhibiting amount of an alkanolamide having the structure: ##STR7## wherein R 1 is a hydrocarbon group containing from 6 to 26 carbon atoms, R 2 is an hydroxy substituted alkyl of 1 to 6 carbon atoms and R 3 is hydrogen or hydroxy substituted alkyl of 1 to 6 carbon atoms.
Claim 29
Dependent Claim
96 words
An improved method of inhibiting the foaming tendency of a non-aqueous fluid system having a tendency to foam, of the type wherein a foam control composition containing an organo-silicone antifoam agent is added to the system, the improvement comprising adding to the system a foam inhibiting amount of an alkanolamide having the structure: ##STR7## wherein R 1 is a hydrocarbon group containing from 6 to 26 carbon atoms, R 2 is an hydroxy substituted alkyl of 1 to 6 carbon atoms and R 3 is hydrogen or hydroxy substituted alkyl of 1 to 6 carbon atoms.
Claim 30
Dependent Claim
13 words
The method of claim 26, wherein the antifoam agent is dimethyl silicone compound.
Claim 31
Dependent Claim
11 words
The method of claim 26, wherein the alkanolamide is coconut monoethanolamide.
Claim 32
Dependent Claim
11 words
The method of claim 26, wherein the alkanolamide is lauric monoethanolamide.
Claim 33
Dependent Claim
11 words
The method of claim 26, wherein the alkanolamide is tallow monoethanolamide.
Claim 34
Dependent Claim
11 words
The method of claim 26, wherein the alkanolamide is coconut diethanolamide.
Claim 35
Dependent Claim
20 words
The method of claim 26, wherein the antifoam agent is a dimethyl silicone compound and the alkanolamide is coconut monoethanolamide.
Claim 36
Dependent Claim
14 words
The method of claim 32, wherein the non-aqueous fluid is a triaryl phosphate ester.
Claim 37
Dependent Claim
13 words
The method of claim 26, wherein the non-aqueous fluid is a functional fluid.
Claim 38
Dependent Claim
18 words
The method of claim 34, wherein the non-aqueous fluid is a functional fluid containing a synthetic phosphate ester.
Claim 39
Dependent Claim
18 words
The method of claim 35, wherein the non-aqueous fluid is a functional fluid containing a triaryl phosphate ester.
Claim 40
Dependent Claim
22 words
The method of claim 36, wherein the non-aqueous fluid is a functional fluid containing a triaryl phosphate ester of t-butylphenyl diphenyl phosphate.
Claim 41
Dependent Claim
13 words
The method of claim 26, wherein the system is a gas-turbine lubricating system.
Claim 42
Dependent Claim
26 words
The method of claim 26, wherein the foam inhibiting amount is provided by a weight ratio of alkanolamide to antifoaming agent of 0.1:1 to about 10:1.
Claim 43
Dependent Claim
27 words
The method of claim 26, wherein the foam inhibiting amount is provided by a weight ratio of alkanolamide to antifoaming agent of about 0.5:1 to about 5:1.
Claim 44
Dependent Claim
25 words
The method of claim 26, wherein the foam inhibiting amount is from about 1 ppm to about 500 ppm by weight of the non-aqueous fluid.
Claim 45
Dependent Claim
25 words
The method of claim 26, wherein the foam inhibiting amount is from about 1 ppm to about 100 ppm by weight of the non-aqueous fluid.
Claim 46
Dependent Claim
25 words
The method of claim 26, wherein the foam inhibiting amount is from about 5 ppm to about 25 ppm by weight of the non-aqueous fluid.
Claim 47
Independent Claim
69 words
A method of inhibiting foam formation in a non-aqueous fluid system comprising adding to the system a foam inhibiting amount of an alkanolamide having the structure: ##STR8## wherein R 1 is a hydrocarbon group containing from 6 to 26 carbon atoms, R 2 is an hydroxy substituted alkyl of 1 to 6 carbon atoms and R 3 is hydrogen or hydroxy substituted alkyl of 1 to 6 carbon atoms.
Claim 48
Independent Claim
69 words
A method of inhibiting foam formation in a non-aqueous fluid system comprising adding to the system a foam inhibiting amount of an alkanolamide having the structure: ##STR8## wherein R 1 is a hydrocarbon group containing from 6 to 26 carbon atoms, R 2 is an hydroxy substituted alkyl of 1 to 6 carbon atoms and R 3 is hydrogen or hydroxy substituted alkyl of 1 to 6 carbon atoms.
Claim 49
Dependent Claim
11 words
The method of claim 44 wherein the alkanolamide is coconut moneoethanolamide.
Claim 50
Dependent Claim
11 words
The method of claim 44, wherein the alkanolamide is lauric monoethanolamide.
Claim 51
Dependent Claim
11 words
The method of claim 44, wherein the alkanolamide is tallow monoethanolamide.
Claim 52
Dependent Claim
11 words
The method of claim 44, wherein the alkanolamide is coconut diethanolamide.
Claim 53
Dependent Claim
13 words
The method of claim 44, wherein the non-aqueous fluid is a functional fluid.
Claim 54
Dependent Claim
18 words
The method of claim 49, wherein the non-aqueous fluid is a functional fluid containing a synthetic phosphate ester.
Claim 55
Dependent Claim
18 words
The method of claim 50, wherein the non-aqueous fluid is a functional fluid containing a triaryl phosphate ester.
Claim 56
Dependent Claim
22 words
The method of claim 51, wherein the non-aqueous fluid is a functional fluid containing a triaryl phosphate ester of t-butylphenyl diphenyl phosphate.
Claim 57
Dependent Claim
13 words
The method of claim 44, wherein the system is a gas-turbine lubricating system.
Claim 58
Dependent Claim
25 words
The method of claim 44, wherein the foam inhibiting amount is from about 1 ppm to about 500 ppm by weight of the non-aqueous fluid.
Claim 59
Dependent Claim
25 words
The method of claim 44, wherein the foam inhibiting amount is from about 1 ppm to about 100 ppm by weight of the non-aqueous fluid.
Claim 60
Dependent Claim
25 words
The method of claim 44, wherein the foam inhibiting amount is from about 5 ppm to about 25 ppm by weight of the non-aqueous fluid.
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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) | 1982-04-23 | 1982-10-23 | 1983-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-23 | 1986-10-23 | 1987-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-23 | 1990-10-23 | 1991-04-24 | $7700.00 | Window Closed / Lapsed |