US3969282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acidic surfactant composition, stock surfactant solution prepared therefrom, and method of washing soiled substrates employing the same
Assignee: Diversey Wyandotte Corp
•
Filing: 1974-12-23
•
Granted: 1976-07-13
•
Expires: 1994-12-23
Abstract
Abstract An acidic, stable, homogeneous, mobile liquid, biodegradable surfactant composition is provided which consists essentially of 1. at least one liquid hydrophilic nonionic surfactant, 2. at least one substantially salt free liquid biodegradable alkyl benzene sulfonic acid surfactant corresponding to the structural formula: ##SPC1## Wherein n is an integer having a numerical value of from 3 to 14, 3. about 0.0001-1% by weight of hydrogen peroxide, and 4. about 0-95% by weight of water. The surfactant composition contains a weight ratio of surfactant (1) to surfactant (2) from 1:5 to 5:1, and surfactant (1) has hydrophilic properties whereby the surfactant composition is stable and remains homogeneous in the absence of an added hydrotrope. The hydrogen peroxide is present in an amount to control obnoxious odors and the use of an expensive perfume to mask odors is not necessary. Acidic stock surfactant solutions which are compatible with alkaline aqueous washing media may be prepared by diluting the surfactant composition with water. The acidic surfactant composition and/or stock solution may be admixed with an alkaline aqueous medium containing a dissolved substance providing ammonion ion, sodium ion, and/or potassium ion in an amount to form the corresponding salt of the alkyl benzene sulfonic acid surfactant and the resulting admixture may be used in washing soiled substrates. The surfactant composition and stock solution are especially useful in laundering textile materials and, when used for this purpose, a very high degree of soil removal is achieved. The surfactant composition and stock solution do not require water softening agents when washing in hard water.
Inventors
- 👤 Frank R. Kappler
- 👤 John D. Ciko
- 👤 John J. Cramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:49
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/66; C11D1/83; C11D1/831; C11D1/02; C11D1/12; C11D1/22; C11D3/00; C11D3/39; C11D3/3947
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
167 words
An acidic stable homogeneous mobile liquid biodegradable surfactant composition consisting essentially of 1. at least one liquid hydrophilic nonionic surfactant, the said nonionic surfactant being a polyoxyalkylene adduct of a hydrophobic base wherein the oxygen/carbon atom ratio in the oxyalkylene portion of the molecule is greater than 0.40 and the said oxyalkylene portion constitutes at least 60% by weight of the said molecule, 2. at least one substantially salt free liquid biodegradable alkyl benzene sulfonic acid surfactant corresponding to the structural formula: ##SPC5## wherein n is an integer having a numerical value of from 3 to 14, 3. about 0.0001-1% by weight of hydrogen peroxide, and 4. about 0-95% by weight of water, the liquid surfactant composition containing a weight ratio of surfactant (1) to surfactant (2) from 1:5 to 5:1, the surfactant (1) having hydrophilic properties whereby the liquid surfactant composition is stable and remains homogeneous in the absence of an added hydrotrope, and the hydrogen peroxide being present in an amount to control obnoxious odors.
Claim 2
Dependent Claim
167 words
An acidic stable homogeneous mobile liquid biodegradable surfactant composition consisting essentially of 1. at least one liquid hydrophilic nonionic surfactant, the said nonionic surfactant being a polyoxyalkylene adduct of a hydrophobic base wherein the oxygen/carbon atom ratio in the oxyalkylene portion of the molecule is greater than 0.40 and the said oxyalkylene portion constitutes at least 60% by weight of the said molecule, 2. at least one substantially salt free liquid biodegradable alkyl benzene sulfonic acid surfactant corresponding to the structural formula: ##SPC5## wherein n is an integer having a numerical value of from 3 to 14, 3. about 0.0001-1% by weight of hydrogen peroxide, and 4. about 0-95% by weight of water, the liquid surfactant composition containing a weight ratio of surfactant (1) to surfactant (2) from 1:5 to 5:1, the surfactant (1) having hydrophilic properties whereby the liquid surfactant composition is stable and remains homogeneous in the absence of an added hydrotrope, and the hydrogen peroxide being present in an amount to control obnoxious odors.
Claim 3
Dependent Claim
23 words
The liquid surfactant composition of claim 1 wherein the said ratio of surfactant (1) to surfactant (2) is from about 1:2 to 2:1.
Claim 4
Dependent Claim
17 words
The liquid surfactant composition of claim 1 wherein about 0.01-0.5% by weight of hydrogen peroxide is present.
Claim 5
Dependent Claim
20 words
The surfactant composition of claim 3 wherein the hydrogen peroxide is present in an amount of about 0.1% by weight.
Claim 6
Dependent Claim
19 words
The surfactant composition of claim 1 wherein the said ratio of surfactant (1) to surfactant (2) is about 1:1.
Claim 7
Dependent Claim
79 words
The liquid surfactant composition of claim 1 wherein the nonionic surfactant comprises an alkoxylate of an aliphatic alcohol corresponding to the structural formula: R--0--(A).sub.n --H wherein R is the organic residue of at least one aliphatic alcohol having from 8 to 20 carbon atoms, A is at least one oxyalkylene group, and n is an integer having a numerical value such that the oxyalkylene groups constitute more than 60% and up to about 95% by weight of the compound.
Claim 8
Dependent Claim
38 words
The liquid surfactant composition of claim 6 wherein the oxyalkylene groups are selected from the group consisting of oxyethylene groups, oxypropylene groups and admixtures thereof, and the oxyalkylene groups constitute at least 65% by weight of the compound.
Claim 9
Dependent Claim
22 words
The liquid surfactant composition of claim 7 wherein the oxyalkylene groups constitute from about 70% to 80% by weight of the compound.
Claim 10
Dependent Claim
22 words
The liquid surfactant composition of claim 1 wherein n is an integer having a numerical value of from about 6 to 11.
Claim 11
Dependent Claim
19 words
The liquid surfactant composition of claim 1 wherein n is an integer having a numerical value of about 9.
Claim 12
Dependent Claim
17 words
The liquid surfactant composition of claim 1 wherein at least 30% by weight of water is present.
Claim 13
Dependent Claim
19 words
The liquid surfactant composition of claim 1 wherein from about 50% to 85% by weight of water is present.
Claim 14
Dependent Claim
36 words
The liquid surfactant composition of claim 6 wherein n is an integer having a numerical value of from about 6 to 11, and at least 30% by weight of water is present in the surfactant composition.
Claim 15
Dependent Claim
23 words
The liquid surfactant composition of claim 13 wherein the said ratio of surfactant (1) to surfactant (2) is from about 1:2 to 2:1.
Claim 16
Dependent Claim
21 words
The liquid surfactant composition of claim 13 wherein about 0.01-0.5% by weight of hydrogen peroxide is present to control obnoxious odors.
Claim 17
Dependent Claim
40 words
The liquid surfactant composition of claim 13 wherein the said oxyalkylene groups are selected from the group consisting of oxyethylene groups, oxypropylene groups and admixtures thereof, and the said oxyalkylene groups constitute at least 65% by weight of the compound.
Claim 18
Dependent Claim
35 words
The liquid surfactant composition of claim 16 wherein the hydrogen peroxide is present in an amount of about 0.01-0.5% by weight, and the surfactant composition contains from about 50% to 85% by weight of water.
Claim 19
Dependent Claim
39 words
The liquid surfactant composition of claim 17 wherein the said ratio of surfactant (1) to surfactant (2) is from about 1:2 to 2:1 and the said oxyalkylene groups constitute from about 70% to 80% by weight of the compound.
Claim 20
Dependent Claim
19 words
The liquid surfactant composition of claim 18 wherein n is an integer having a numerical value of about 9.
Claim 21
Dependent Claim
41 words
The liquid surfactant composition of claim 19 wherein the said ratio of surfactant (1) to surfactant (2) is about 1:1, hydrogen peroxide is present in an amount of about 0.1% by weight, and the surfactant composition contains about 70% of water.
Claim 22
Dependent Claim
28 words
An acidic stock surfactant solution which is stable, homogeneous, mobile and compatible with alkaline aqueous washing media prepared by diluting the surfactant composition of claim 1 with water.
Claim 23
Dependent Claim
15 words
A stock surfactant solution prepared by diluting the surfactant composition of claim 2 with water.
Claim 24
Dependent Claim
15 words
A stock surfactant solution prepared by diluting the surfactant composition of claim 6 with water.
Claim 25
Dependent Claim
15 words
A stock surfactant solution prepared by diluting the surfactant composition of claim 11 with water.
Claim 26
Dependent Claim
16 words
A stock solution of surfactant prepared by diluting the surfactant composition of claim 16 with water.
Claim 27
Dependent Claim
16 words
A stock solution of surfactant prepared by diluting the surfactant composition of claim 18 with water.
Claim 28
Dependent Claim
16 words
A stock solution of surfactant prepared by diluting the surfactant composition of claim 20 with water.
Claim 29
Dependent Claim
99 words
In a method of washing soiled substrates wherein the substrate is intimately contacted with an aqueous medium containing a surfactant composition under conditions whereby at least a portion of the soil is removed therefrom, the improvement which comprises washing the said solid substrate in an alkaline aqueous medium containing (A) a surfactant composition in accordance with claim 1, and (B) a dissolved water-soluble alkaline substance substance providing at least one ion selected from the group consisting of ammonium, sodium and potassium ions in an amount to form the corresponding salt of the alkyl benzene sulfonic acid surfactant of (A).
Claim 30
Dependent Claim
26 words
The method of claim 28 wherein the said surfactant composition of (A) has a ratio of surfactant (1) to surfactant (2) from about 1:2 to 2:1.
Claim 31
Dependent Claim
85 words
The method of claim 28 wherein the said surfactant composition of (A) includes a nonionic surfactant which comprises an alkoxylate of an aliphatic alcohol corresponding to the structural formula: R--O--(A).sub.n --H wherein R is the organic residue of at least one aliphatic alcohol having from 8 to 20 carbon atoms, A is at least one oxyalkylene group, and n is an integer having a numerical value such that the oxyalkylene groups constitute more than 60% and up to about 95% by weight of the compound.
Claim 32
Dependent Claim
20 words
The method of claim 28 wherein the said surfactant composition of (A) includes at least 30% by weight of water.
Claim 33
Dependent Claim
65 words
The method of claim 30 wherein n is an integer having a numerical value of from about 6 to 11, at least 30% by weight of water is present in the surfactant composition, the said oxyalkylene groups are selected from the group consisting of oxyethylene groups, oxypropylene groups and admixtures thereof, and the said oxyalkylene groups constitute at least 65% by weight of the compound.
Claim 34
Dependent Claim
63 words
The method of claim 32 wherein the hydrogen peroxide is present in an amount of about 0.01-0.5% by weight, the surfactant composition contains from about 50% to 85% by weight of water, the said ratio of surfactant (1) to surfactant (2) is from about 1:2 to 2:1, and the said oxyalkylene groups constitute from about 70% to 80% by weight of the compound.
Claim 35
Dependent Claim
50 words
The method of claim 33 wherein n is an integer having a numerical value of about 9, the said ratio of surfactant (1) to surfactant (2) is about 1:1, hydrogen peroxide is present in an amount of about 0.1% by weight, and the surfactant composition contains about 70% of water.
Claim 36
Dependent Claim
111 words
In a method of washing soiled textile materials wherein textile material having an undersirable foreign substance thereon is agitated in an aqueous medium containing a surfactant under conditions whereby at least a portion of the foreign substance is removed, the improvement which comprises washing the said soiled textile material in an alkaline aqueous medium containing (A) a surfactant composition in accordance with claim 1, and (B) a water soluble alkaline substance which provides in solution at least one ion selected from the group consisting of ammonium ion, sodium ion, and potassium ion in an amount whereby the said alkyl benzene sulfonic acid surfactant of (A) is converted to the corresponding salt.
Claim 37
Dependent Claim
26 words
The method of claim 35 wherein the said surfactant composition of (A) has a ratio of surfactant (1) to surfactant (2) from about 1:2 to 2:1.
Claim 38
Dependent Claim
85 words
The method of claim 35 wherein the said surfactant composition of (A) includes a nonionic surfactant which comprises an alkoxylate of an aliphatic alcohol corresponding to the structural formula: R--O--(A).sub.n --H wherein R is the organic residue of at least one aliphatic alcohol having from 8 to 20 carbon atoms, A is at least one oxyalkylene group, and n is an integer having a numerical value such that the oxyalkylene groups constitute more than 60% and up to about 95% by weight of the compound.
Claim 39
Dependent Claim
20 words
The method of claim 35 wherein the said surfactant composition of (A) includes at least 30% by weight of water.
Claim 40
Dependent Claim
65 words
The method of claim 37 wherein n is an integer having a numerical value of from about 6 to 11, at least 30% by weight of water is present in the surfactant composition, the said oxyalkylene groups are selected from the group consisting of oxyethylene groups, oxypropylene groups and admixtures thereof, and the said oxyalkylene groups constitute at least 65% by weight of the compound.
Claim 41
Dependent Claim
63 words
The method of claim 39 wherein the hydrogen peroxide is present in an amount of about 0.01-0.5% by weight, the surfactant composition contains from about 50% to 85% by weight of water, the said ratio of surfactant (1) to surfactant (2) is from about 1:2 to 2:1, and the said oxyalkylene groups constitute from about 70% to 80% by weight of the compound.
Claim 42
Dependent Claim
50 words
The method of claim 40 wherein n is an integer having a numerical value of about 9, the said ratio of surfactant (1) to surfactant (2) is about 1:1, hydrogen peroxide is present in an amount of about 0.1% by weight, and the surfactant composition contains about 70% of water.
References Cited (Backward Citations)
US2827484A
Cited
GB870458A
Cited
GB917432A
Cited
GB885870A
Cited
US3068279A
Cited
US3218260A
Cited
AU274388B2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |