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US4088601A
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Water-emulsifiable defoamer composition
Assignee: Huntsman Corp
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Filing: 1974-11-11
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Granted: 1978-05-09
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Expires: 1994-11-11
Abstract
Abstract Defoamer compositions, from which particulate inorganic solids are substantially absent, are described for use in hot and cold stock pulp mill and paper mill applications. The compositions are water-emulsifiable to form stable emulsions for ease of application in use. The composition contains low viscosity mineral oils, an aliphatic diamide, silicone oil and an ethoxylated alkyl substituted phenol.
Inventors
- 👤 Hugh J. S. Shane
- 👤 Frederick S. Schell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:11
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; B01D19/0413
Claims Analysis
Total Claims: 64
Claim 1
Independent Claim
155 words
A substantially inorganic-particulate-free defoamer composition inherently capable of forming a stable oil-in-water emulsion and consisting essentially of from about 1.5 to about 12% by weight of an aliphatic diamide, said diamide being formed from a polymethylene diamine containing from 2 to 6 carbon atoms and at least one long chain aliphatic carboxylic acid containing from 12 to 22 carbon atoms, a small quantity of a silicone oil, from about 1 to about 8% by weight of an alkoxylated alkyl substituted phenol having the formula: ##STR3## wherein R is an alkyl group containing from 8 to 10 carbon atoms, R' is an alkyl group containing two or three carbon atoms, and n is a value from greater than 4 to less than about 8, and the balance of a low viscosity mineral oil, said diamide having an average particle size from 4 to 7 on the Hegman scale and being dispersed substantially uniformly throughout said oil.
Claim 2
Dependent Claim
155 words
A substantially inorganic-particulate-free defoamer composition inherently capable of forming a stable oil-in-water emulsion and consisting essentially of from about 1.5 to about 12% by weight of an aliphatic diamide, said diamide being formed from a polymethylene diamine containing from 2 to 6 carbon atoms and at least one long chain aliphatic carboxylic acid containing from 12 to 22 carbon atoms, a small quantity of a silicone oil, from about 1 to about 8% by weight of an alkoxylated alkyl substituted phenol having the formula: ##STR3## wherein R is an alkyl group containing from 8 to 10 carbon atoms, R' is an alkyl group containing two or three carbon atoms, and n is a value from greater than 4 to less than about 8, and the balance of a low viscosity mineral oil, said diamide having an average particle size from 4 to 7 on the Hegman scale and being dispersed substantially uniformly throughout said oil.
Claim 3
Dependent Claim
22 words
The composition of claim 1 wherein said diamide has an average particle size of from 5 to 6 on the Hegman scale.
Claim 4
Dependent Claim
13 words
The composition of claim 1 wherein said diamide consists predominantly of ethylene bis-stearamide.
Claim 5
Dependent Claim
22 words
The composition of claim 1 wherein said diamide is present in an amount of from about 6 to about 8% by weight.
Claim 6
Dependent Claim
17 words
The composition of claim 1 wherein there is present up to about 2% of said silicone oil.
Claim 7
Dependent Claim
14 words
The composition of claim 1 wherein said silicone oil is a dimethyl siloxane oil.
Claim 8
Dependent Claim
15 words
The composition of claim 6 wherein said alkoxylated alkyl substituted phenol has the formula: ##STR4##
Claim 9
Dependent Claim
22 words
The composition of claim 1 wherein there is about 4.5 to about 5.5% by weight of said alkoxylated alkyl substituted phenol present.
Claim 10
Dependent Claim
20 words
The composition of claim 1 wherein there is present up to about 3% by weight of an additional spreading agent.
Claim 11
Dependent Claim
24 words
The composition of claim 9 wherein said additional spreading agent is present in an amount of from about 1/2 to about 1% by weight.
Claim 12
Dependent Claim
33 words
The composition of claim 1 wherein said mineral oil has a viscosity of from about 25 to about 100 SUS at 210° F and about 65 to about 215 SUS at 100° F.
Claim 13
Dependent Claim
64 words
The composition of claim 1 wherein said mineral oil has the chemical composition consisting of from about 60 to about 70% paraffinic carbon, about 25 to about 35% naphthenic carbon, about 1 to about 5% aromatic carbon, about 75 to about 95% by weight of saturates, about 5 to about 20% by weight of aromatics and less than 1.5% by weight of polar compounds.
Claim 14
Dependent Claim
109 words
A defoamer composition inherently capable of forming a stable oil-in-water emulsion and consisting of about 6.7% by weight of ethylene bis-stearamide, about 1% by weight of a calcium petroleum sulfonate having a molecular weight of about 440, about 0.5% by weight of a dimethyl siloxane oil, about 5.1% by weight of a compound of the formula: ##STR5## and the balance by weight of a mineral oil having a viscosity of about 40 SUS at 210° F and containing about 68% paraffinic carbons and about 90% saturates, said amide having an average particle size from 5 to 6 on the Hegman scale and being substantially uniformly dispersed throughout said oil.
Claim 15
Dependent Claim
109 words
A defoamer composition inherently capable of forming a stable oil-in-water emulsion and consisting of about 6.7% by weight of ethylene bis-stearamide, about 1% by weight of a calcium petroleum sulfonate having a molecular weight of about 440, about 0.5% by weight of a dimethyl siloxane oil, about 5.1% by weight of a compound of the formula: ##STR5## and the balance by weight of a mineral oil having a viscosity of about 40 SUS at 210° F and containing about 68% paraffinic carbons and about 90% saturates, said amide having an average particle size from 5 to 6 on the Hegman scale and being substantially uniformly dispersed throughout said oil.
Claim 16
Dependent Claim
26 words
The composition of claim 13 wherein said dimethyl siloxane oil is a thixotropic liquid having a viscosity at 25° C of about 3100 to 3300 centistokes.
Claim 17
Dependent Claim
19 words
The composition of claim 13 wherein said dimethyl siloxane oil is a liquid having a viscosity of 50 centistokes.
Claim 18
Dependent Claim
161 words
A defoamer composition comprising a stable oil-in-water emulsion consisting of at least 50% water and the remainder a defoamer composition consisting essentially of from about 1.5 to about 12% by weight of an aliphatic diamide, said diamide being formed from a polymethylene diamine containing from 2 to 6 carbon atoms and at least one long chain aliphatic carboxylic acid containing from 12 to 22 carbon atoms, a small quantity of a silicone oil, from about 1 to about 8% by weight of an alkoxylated alkyl substituted phenol having the formula: ##STR6## wherein R is an alkyl group containing from 8 to 10 carbon atoms, R' is an alkyl group containing two or three carbon atoms and n is a value from greater than 4 to less than about 8, and the balance of a low viscosity mineral oil, said diamide having an average particle size from 4 to 7 on the Hegman scale and being dispersed substantially uniformly throughout said oil.
Claim 19
Dependent Claim
161 words
A defoamer composition comprising a stable oil-in-water emulsion consisting of at least 50% water and the remainder a defoamer composition consisting essentially of from about 1.5 to about 12% by weight of an aliphatic diamide, said diamide being formed from a polymethylene diamine containing from 2 to 6 carbon atoms and at least one long chain aliphatic carboxylic acid containing from 12 to 22 carbon atoms, a small quantity of a silicone oil, from about 1 to about 8% by weight of an alkoxylated alkyl substituted phenol having the formula: ##STR6## wherein R is an alkyl group containing from 8 to 10 carbon atoms, R' is an alkyl group containing two or three carbon atoms and n is a value from greater than 4 to less than about 8, and the balance of a low viscosity mineral oil, said diamide having an average particle size from 4 to 7 on the Hegman scale and being dispersed substantially uniformly throughout said oil.
Claim 20
Dependent Claim
168 words
A substantially inorganic particulate-free defoamer composition inherently capable of formation into a stable oil-in-water emulsion and consisting essentially of from about 1.5 to about 12% by weight of an aliphatic diamide, said diamide being formed from a polymethylene diamine containing from 2 to 6 carbon atoms and at least one long chain aliphatic carboxylic acid containing from 12 to 22 carbon atoms, a small quantity of a silicone oil, from about 1 to about 8% by weight of an alkoxylated alkyl substituted phenol having the formula: ##STR7## wherein R is an alkyl group containing from 8 to 10 carbon atoms, R' is an alkyl group containing two or three carbon atoms and n is a value from greater than 4 to less than about 8, about 3 to about 9% by weight of an aliphatic oil, and the balance of a low viscosity mineral oil, said diamide having an average particle size from 4 to 7 on the Hegman scale and being dispersed substantially uniformly through said oils.
Claim 21
Dependent Claim
168 words
A substantially inorganic particulate-free defoamer composition inherently capable of formation into a stable oil-in-water emulsion and consisting essentially of from about 1.5 to about 12% by weight of an aliphatic diamide, said diamide being formed from a polymethylene diamine containing from 2 to 6 carbon atoms and at least one long chain aliphatic carboxylic acid containing from 12 to 22 carbon atoms, a small quantity of a silicone oil, from about 1 to about 8% by weight of an alkoxylated alkyl substituted phenol having the formula: ##STR7## wherein R is an alkyl group containing from 8 to 10 carbon atoms, R' is an alkyl group containing two or three carbon atoms and n is a value from greater than 4 to less than about 8, about 3 to about 9% by weight of an aliphatic oil, and the balance of a low viscosity mineral oil, said diamide having an average particle size from 4 to 7 on the Hegman scale and being dispersed substantially uniformly through said oils.
Claim 22
Dependent Claim
22 words
The composition of claim 17 wherein said diamide has an average particle size of from 5 to 6 on the Hegman scale.
Claim 23
Dependent Claim
13 words
The composition of claim 17 wherein said diamide consists predominantly of ethylene bis-stearamide.
Claim 24
Dependent Claim
22 words
The composition of claim 17 wherein said diamide is present in an amount of from about 6 to about 8% by weight.
Claim 25
Dependent Claim
17 words
The composition of claim 17 wherein there is present up to about 2% of said silicone oil.
Claim 26
Dependent Claim
14 words
The composition of claim 17 wherein said silicone oil is a dimethyl siloxane oil.
Claim 27
Dependent Claim
15 words
The composition of claim 17 wherein said alkoxylated alkyl substituted phenol has the formula: ##STR8##
Claim 28
Dependent Claim
22 words
The composition of claim 17 wherein there is about 4.5 to about 5.5% by weight of said alkoxylated alkyl substituted phenol present.
Claim 29
Dependent Claim
20 words
The composition of claim 17 wherein there is present up to about 3% by weight of an additional spreading agent.
Claim 30
Dependent Claim
24 words
The composition of claim 25 wherein said additional spreading agent is present in an amount of from about 1/2 to about 1% by weight.
Claim 31
Dependent Claim
23 words
The composition of claim 17 wherein said aliphatic oil is present in an amount of from about 5 to about 7% by weight.
Claim 32
Dependent Claim
28 words
The composition of claim 17 wherein said aliphatic oil has a viscosity of about 50 centistokes, is substantially odor-free and has a flash point of about 125° F.
Claim 33
Dependent Claim
33 words
The composition of claim 17 wherein said aliphatic oil has a viscosity and is present in sufficient quantity to provide an overall viscosity of said composition of about 400 to about 1000 centipoise.
Claim 34
Dependent Claim
21 words
The composition of claim 17 wherein said aliphatic oil is substantially odorless and has a flash point greater than 120° F.
Claim 35
Dependent Claim
33 words
The composition of claim 17 wherein said mineral oil has a viscosity of from about 25 to about 100 SUS at 210° F and about 65 to about 215 SUS at 100° F.
Claim 36
Dependent Claim
64 words
The composition of claim 17 wherein said mineral oil has the chemical composition consisting of from about 60 to about 70% paraffinic carbon, about 25 to about 35% naphthenic carbon, about 1 to about 5% aromatic carbon, about 75 to about 95% by weight of saturates, about 5 to about 20% by weight of aromatics and less than 1.5% by weight of polar compounds.
Claim 37
Dependent Claim
110 words
A defoamer composition inherently capable of forming a stable oil-in-water emulsion and consisting essentially of about 6.2% by weight of ethylene bis-stearamide, about 0.9% by weight of a calcium petroleum sulfonate having a molecular weight of about 440, about 0.5% of a dimethyl siloxane oil, about 4.8% of a compound of the formula: ##STR9## about 6.0% of an aliphatic oil, and the balance of a mineral oil having a viscosity of about 40 SUS at 210° F and containing about 68% paraffinic carbons and about 90% saturates, said amide having an average particle size from 5 to 6 on the Hegman scale and being substantially uniformly dispersed throughout said oils.
Claim 38
Dependent Claim
110 words
A defoamer composition inherently capable of forming a stable oil-in-water emulsion and consisting essentially of about 6.2% by weight of ethylene bis-stearamide, about 0.9% by weight of a calcium petroleum sulfonate having a molecular weight of about 440, about 0.5% of a dimethyl siloxane oil, about 4.8% of a compound of the formula: ##STR9## about 6.0% of an aliphatic oil, and the balance of a mineral oil having a viscosity of about 40 SUS at 210° F and containing about 68% paraffinic carbons and about 90% saturates, said amide having an average particle size from 5 to 6 on the Hegman scale and being substantially uniformly dispersed throughout said oils.
Claim 39
Dependent Claim
27 words
The defoamer composition of claim 33, wherein said dimethyl siloxane oil is a thixotropic liquid having a viscosity at 25° C of about 3100 to 3300 centistokes.
Claim 40
Dependent Claim
20 words
The defoamer composition of claim 33, wherein said dimethyl siloxane oil is a liquid having a viscosity of 50 centistokes.
Claim 41
Independent Claim
168 words
A method for the control of foam in an aqueous liquor having a tendency to foam which comprises treating said liquor with a substantially inorganic-particulate-free defoamer composition consisting essentially of from about 1.5 to about 12% by weight of an aliphatic diamide, said diamide being formed from a polymethylene diamine containing from 2 to 6 carbon atoms and at least one long chain aliphatic carboxylic acid containing from 12 to 22 carbon atoms, a small quantity of a silicone oil, from about 1 to about 8% by weight of an alkoxylated alkyl substituted phenol having the formula: ##STR10## wherein R is an alkyl group containing from 8 to 10 carbon atoms, R' is an alkyl group containing two or three carbon atoms and n is a value from greater than 4 to less than about 8, and the balance of a low viscosity mineral oil, said diamide having an average particle size from 4 to 7 on the Hegman scale and being dispersed substantially uniformly throughout said oil.
Claim 42
Independent Claim
168 words
A method for the control of foam in an aqueous liquor having a tendency to foam which comprises treating said liquor with a substantially inorganic-particulate-free defoamer composition consisting essentially of from about 1.5 to about 12% by weight of an aliphatic diamide, said diamide being formed from a polymethylene diamine containing from 2 to 6 carbon atoms and at least one long chain aliphatic carboxylic acid containing from 12 to 22 carbon atoms, a small quantity of a silicone oil, from about 1 to about 8% by weight of an alkoxylated alkyl substituted phenol having the formula: ##STR10## wherein R is an alkyl group containing from 8 to 10 carbon atoms, R' is an alkyl group containing two or three carbon atoms and n is a value from greater than 4 to less than about 8, and the balance of a low viscosity mineral oil, said diamide having an average particle size from 4 to 7 on the Hegman scale and being dispersed substantially uniformly throughout said oil.
Claim 43
Dependent Claim
45 words
The method of claim 36 wherein said aqueous liquor is a pulp or paper mill aqueous liquor having a pH of about 4 to 12 and said method is carried out at a temperature of about 32° F to the boiling point of the liquor.
Claim 44
Dependent Claim
15 words
The method of claim 37 wherein said aqueous liquor is a pulp mill black liquor.
Claim 45
Dependent Claim
16 words
The method of claim 37 wherein said aqueous liquor is a pulp mill screen room liquor.
Claim 46
Dependent Claim
16 words
The method of claim 37 wherein said aqueous liquor is a paper mill paper-making machine liquor.
Claim 47
Dependent Claim
26 words
The method of claim 38 wherein from about 0.5 to about 2 lbs. of said composition per ton of pulp is dispersed in said black liquor.
Claim 48
Dependent Claim
27 words
The method of claim 39 wherein from about 0.5 to about 2 lbs. of said composition per ton of pulp is dispersed in said screen room liquor.
Claim 49
Dependent Claim
28 words
The method of claim 40 wherein from about 0.5 to about 3 lbs. of said composition per ton of pulp is dispersed in said paper making machine liquor.
Claim 50
Dependent Claim
14 words
The method of claim 36 wherein said aqueous liquor is a foamable industrial effluent.
Claim 51
Dependent Claim
26 words
The method of claim 36 wherein said composition is used as a stable oil-in-water emulsion and said emulsion is substantially uniformly dispersed in said aqueous liquor.
Claim 52
Dependent Claim
15 words
The method of claim 45 wherein said emulsion has a concentration of about 5% v/v.
Claim 53
Independent Claim
179 words
A method for the control of foam in an aqueous liquor having a tendency to foam which comprises treating said liquor with a substantially inorganic-particulate-free defoamer composition consisting essentially of from about 1.5 to about 12% by weight of an aliphatic diamide, said diamide being formed from a polymethylene diamine containing from 2 to 6 carbon atoms and at least one long chain aliphatic carboxylic acid containing from 12 to 22 carbon atoms, a small quantity of a silicone oil, from about 1 to about 8% by weight of an alkoxylated alkyl substituted phenol having the formula: ##STR11## wherein R is an alkyl group containing from 8 to 10 carbon atoms, R' is an alkyl group containing two or three carbon atoms and n is a value from greater than 4 to less than about 8, about 3 to about 9% by weight of an aliphatic oil, and the balance of a low viscosity mineral oil, said diamide having an average particle size from 4 to 7 on the Hegman scale and being dispersed substantially uniformly through said oils.
Claim 54
Independent Claim
179 words
A method for the control of foam in an aqueous liquor having a tendency to foam which comprises treating said liquor with a substantially inorganic-particulate-free defoamer composition consisting essentially of from about 1.5 to about 12% by weight of an aliphatic diamide, said diamide being formed from a polymethylene diamine containing from 2 to 6 carbon atoms and at least one long chain aliphatic carboxylic acid containing from 12 to 22 carbon atoms, a small quantity of a silicone oil, from about 1 to about 8% by weight of an alkoxylated alkyl substituted phenol having the formula: ##STR11## wherein R is an alkyl group containing from 8 to 10 carbon atoms, R' is an alkyl group containing two or three carbon atoms and n is a value from greater than 4 to less than about 8, about 3 to about 9% by weight of an aliphatic oil, and the balance of a low viscosity mineral oil, said diamide having an average particle size from 4 to 7 on the Hegman scale and being dispersed substantially uniformly through said oils.
Claim 55
Dependent Claim
45 words
The method of claim 47 wherein said aqueous liquor is a pulp or paper mill aqueous liquor having a pH of about 4 to 12 and said method is carried out at a temperature of about 32° F to the boiling point of the liquor.
Claim 56
Dependent Claim
15 words
The method of claim 48 wherein said aqueous liquor is a pulp mill black liquor.
Claim 57
Dependent Claim
16 words
The method of claim 48 wherein said aqueous liquor is a pulp mill screen room liquor.
Claim 58
Dependent Claim
16 words
The method of claim 48 wherein said aqueous liquor is a paper mill paper-making machine liquor.
Claim 59
Dependent Claim
26 words
The method of claim 49 wherein from about 0.5 to about 2 lbs. of said composition per ton of pulp is dispersed in said black liquor.
Claim 60
Dependent Claim
27 words
The method of claim 50 wherein from about 0.5 to about 2 lbs. of said composition per ton of pulp is dispersed in said screen room liquor.
Claim 61
Dependent Claim
28 words
The method of claim 51 wherein from about 0.5 to about 3 lbs of said composition per ton of pulp is dispersed in said paper making machine liquor.
Claim 62
Dependent Claim
14 words
The method of claim 47 wherein said aqueous liquor is a foamable industrial effluent.
Claim 63
Dependent Claim
26 words
The method of claim 47 wherein said composition is used as a stable oil-in-water emulsion and said emulsion is substantially uniformly dispersed in said aqueous liquor.
Claim 64
Dependent Claim
15 words
The method of claim 56 wherein said emulsion has a concentration of about 5% v/v.
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) | 1981-05-08 | 1981-11-07 | 1982-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-08 | 1985-11-07 | 1986-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-08 | 1989-11-07 | 1990-05-09 | $7700.00 | Window Closed / Lapsed |