CA1226782A - Aqueous laundry prespotting composition - Google Patents
Aqueous laundry prespotting compositionInfo
- Publication number
- CA1226782A CA1226782A CA000465210A CA465210A CA1226782A CA 1226782 A CA1226782 A CA 1226782A CA 000465210 A CA000465210 A CA 000465210A CA 465210 A CA465210 A CA 465210A CA 1226782 A CA1226782 A CA 1226782A
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- Prior art keywords
- composition
- acid
- ethoxylated
- salts
- salt
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/72—Ethers of polyoxyalkylene glycols
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2075—Carboxylic acids-salts thereof
- C11D3/2086—Hydroxy carboxylic acids-salts thereof
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/26—Organic compounds containing nitrogen
- C11D3/33—Amino carboxylic acids
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Detergent Compositions (AREA)
Abstract
ABSTRACT
An aqueous laundry prespotting composition which is essentially free of solvent, having from 0.1 to 6% of a chelating agent, from 5.0 to 40% by weight of at least one nonionic surfactant, having an HLB in the range of from 9.0 to 13.0 and water. The composition having a pH of from 4.5 to 12.2.
An aqueous laundry prespotting composition which is essentially free of solvent, having from 0.1 to 6% of a chelating agent, from 5.0 to 40% by weight of at least one nonionic surfactant, having an HLB in the range of from 9.0 to 13.0 and water. The composition having a pH of from 4.5 to 12.2.
Description
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This invention relates to laundry prespotting compositions.
More particularly, this invention relates to aqueous lawn-dry prespotting compositions having excellent stain removal properties.
Current commercially- available prespotting compositions fall into two categories, those based primarily upon water and those based primarily upon solvents. The aqueous based prespotting compositions are primarily non aerosol formulations intended for use in trigger spray bottles or squeeze bottles. These aqueous based prespotting combo-sessions have good stain removal characteristics against the so-called water-borne stains. These stains include grape juice, mustard, grass, chocolate, clay and similar stains.
The solvent based composition formulations typically have been packaged in aerosol form. These solvent-based compositions typically are more effective in removing - oil-borne stains, such as cooking oil, fat, spaghetti sauce, serum, grease, motor oil and the like. It is possible to formulate solvent-based prespotting compost-lions with reasonable water-borne stain remover.
However, it is desirable to use a composition which has good removal for both water-borne and oil borne stains.
There have been attempt to replace the solvent with water in prespotter compositions for both aerosol and ,
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This invention relates to laundry prespotting compositions.
More particularly, this invention relates to aqueous lawn-dry prespotting compositions having excellent stain removal properties.
Current commercially- available prespotting compositions fall into two categories, those based primarily upon water and those based primarily upon solvents. The aqueous based prespotting compositions are primarily non aerosol formulations intended for use in trigger spray bottles or squeeze bottles. These aqueous based prespotting combo-sessions have good stain removal characteristics against the so-called water-borne stains. These stains include grape juice, mustard, grass, chocolate, clay and similar stains.
The solvent based composition formulations typically have been packaged in aerosol form. These solvent-based compositions typically are more effective in removing - oil-borne stains, such as cooking oil, fat, spaghetti sauce, serum, grease, motor oil and the like. It is possible to formulate solvent-based prespotting compost-lions with reasonable water-borne stain remover.
However, it is desirable to use a composition which has good removal for both water-borne and oil borne stains.
There have been attempt to replace the solvent with water in prespotter compositions for both aerosol and ,
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non-aerosol formulation types. One approach is described in U. S. Patent ~,~38,009, issued March 20, 1984. The compositions described in this patent are emulsions containing a salt, a non ionic surfactant, from 5 to 60%
by weight of a solvent, and water. these compositions are described as having good stain removal properties but these compositions require that some solvent be present for the enhanced stain removal.
Another approach is set forth in U. S. Patent ~,079,078, issued March 14, 197~. A typical formulation having _ certain ingredients corresponding to the teachings of that patent is tested in Example I herein as a comparative formulation. Such compositions require a non ionic surfactant, an anionic surfactant, an alkanolamine, a base, water, a fatty acid corrosion inhibitor, as oleic acid, and optionally, an electrolyte salt to reduce gel formation, such as sodium citrate, and a color stabilizing agent, as citric acid in amounts of up to lo.
Most commercially available liquid prespotting formulations are totally aqueous. These aqueous formulations exhibit good stain removal for the water-borne stains but are inferior to solvent based prespotters for oil removal.
Most aerosol prespotting formulations and a few liquid formulations are totally non-aqueous. These formulations have excellent oil-borne stain removal but are less effective against water-borne stains. Further these solvent products often contribute to soil redeposition.
The object to the present invention to provide an aqueous liquid prespotting composition having superior cleaning properties for both oil and water-borne stains.
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non-aerosol formulation types. One approach is described in U. S. Patent ~,~38,009, issued March 20, 1984. The compositions described in this patent are emulsions containing a salt, a non ionic surfactant, from 5 to 60%
by weight of a solvent, and water. these compositions are described as having good stain removal properties but these compositions require that some solvent be present for the enhanced stain removal.
Another approach is set forth in U. S. Patent ~,079,078, issued March 14, 197~. A typical formulation having _ certain ingredients corresponding to the teachings of that patent is tested in Example I herein as a comparative formulation. Such compositions require a non ionic surfactant, an anionic surfactant, an alkanolamine, a base, water, a fatty acid corrosion inhibitor, as oleic acid, and optionally, an electrolyte salt to reduce gel formation, such as sodium citrate, and a color stabilizing agent, as citric acid in amounts of up to lo.
Most commercially available liquid prespotting formulations are totally aqueous. These aqueous formulations exhibit good stain removal for the water-borne stains but are inferior to solvent based prespotters for oil removal.
Most aerosol prespotting formulations and a few liquid formulations are totally non-aqueous. These formulations have excellent oil-borne stain removal but are less effective against water-borne stains. Further these solvent products often contribute to soil redeposition.
The object to the present invention to provide an aqueous liquid prespotting composition having superior cleaning properties for both oil and water-borne stains.
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p Accordingly, the present invention provides a laundry prespotting composition comprising: (a) from about Owe to 6% by weight of a chelating agent; (b) from about 5 to about 40~ by weight of at least one non ionic surface lent wherein the surfactant has an HUB such that the combined HUB for all surfactants present is within the I-range of from 9 to 13; and (c) water; wherein the composition is substantially solvent free and wherein the composition has a pi within the range of from about
p Accordingly, the present invention provides a laundry prespotting composition comprising: (a) from about Owe to 6% by weight of a chelating agent; (b) from about 5 to about 40~ by weight of at least one non ionic surface lent wherein the surfactant has an HUB such that the combined HUB for all surfactants present is within the I-range of from 9 to 13; and (c) water; wherein the composition is substantially solvent free and wherein the composition has a pi within the range of from about
4.5 to 12.2.
It has been surprisingly found that the aqueous prespot-tying composition of the present invention exhibits good cleaning including oil removal and recoil inhibition under most conditions encountered in the home laundry. The prespotting composition of the present invention has cleaning properties equal to or better than solvent containing compositions.
The compositions of the present invention are generally liquids of varying viscosities from rather thin compost-lions suitable primarily for use as pump spray or squeeze bottle spray compositions to rather thick formulations which would have to be spread on the cloth by some I`
alternate method.
Still further features and advantages of the composition of the present invention will become more apparent from the following more detailed description thereof.
The first component of the compositions to the present invention is a chelating agent. It is thought that the chelating agent functions in the composition to the present invention to assist in removal of certain heavy ions which inhibit the surfactancy of the non ionic `: `
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surfactants. Also these chelating agents act in concert with the non ionic surfactant so that the surfactant is in the right configuration to attack oily stains from an aqueous system. Suitable chelating gents include the salts of ethylenediamine tetraacetic acid (ETA) such as ethylenediaminetetraacetic acid disodium salt, ethylenediaminetetraacetic acid diammonium salt, e-thylenediaminetetraacetic acid trisodium salt, ethylenediaminetetraacetic acid tetrasodium salt, ethylenediaminetetraacetic acid tetrapotassium salt, ethylenediaminetetraacetic acid tetrammonium salt, etc., the salts of diethylenetriaminepentaacetic acid (DTPA) such as diethylenetriaminepentaacetic acid pentasodium salt, diethylenetriaminepentaacetic acid pentapotassium salt, etc., the salts of (N-hydroxyethyl) -.
; 5 ' ethylenediaminetriacetic acid (HIDEOUT) such as (N-hydroxyethyl) ethylenediaminetriac2tic acid trisodium salt, (N-hydroxyethyl) ethylenediaminetriacetic acid tripotassium salt, etc., the salts of nitrilotriacetic acid (NAT) such as nitrilotriacetic acid trisodium salt, nitrilotriacetic acid tripotassium salt, etch other chelating agents such as triethanolamine, diethanolamine, !_ monoethanolamine, etc. and mixtures thereof. Preferred chelating agents are the ETA and the NAT type chelating agents especially the salts of ethylenediaminetretraacetic acid and particularly the tetrasodium, trisodium and _ disodium salts of ethylenediaminetetraacetic acid.
typically the chelating agents are present in the composition of the present invention in an amount of from about 0.1 to 6% by weight. It is within this weight range that the optimum cleaning and presetting efficiency is obtained. It is preferred that the chelating agents be present in the amount of from about 1.0 to I by weight and preferable from lo to 3.0~ by weight.
The chelating agents, especially the ETA, DTPA, and HIDEOUT
types, can be added to the composition of the present invention in the salt form, which is preferred since the -salts are water soluble, or in the water insoluble free acid form. If the chelating agents are added in the free acid form, the free acids must be at least partially neutralized to make them water soluble and form the chelating agent salts in situ. Suitable bases to neutralize the free acids are sodium hydroxide, potassium hydroxide and ammonium hydroxide. Sufficient vase is added to syllables the free acid chelating agent and to bring the pi of the composition within the range of about 4.5 to 12.2.
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If the chelating agents are added as salts, these salts are often quite basic, having a pi often above 10. It may be necessary to add some acid or other pi buffering material to the composition of the present invention to adjust the pi to within a range of from 4.5 to 12.2 and preferably 6.5 to 8.5 and optimum 7 to 8. Suitable acids include citric acid, oxalic acid, acetic acid, hydrochloric acid, phosphoric, and the like. The primary function of the acid is to control the pi so that the chelating agent and the surfactants can remove the stains from the fabrics. Certain organic acids also have some cnelatin~ properties and therefore may contribute to the overall cleaning efficiency of the prespotting composition. Generally the acids, if used, are present in the compositions in the amount of from 0.2 to 2% by weight, however the amount of acid used is not critical.
I've preferred acid is citric acid.
Citric acid may also be employed as a chelating agent, since it possesses chelating properties. For this purpose it is employed in cnelatiny amounts from about 1.0 to 4.0 by weight and, preferably, from 1.5 to 3.0% by weight. A
suitable base can be employed to adjust the pi of the composition to within the preferred range from 6.5 to I
and, optimally, between 7 and 8.
Accordingly, citric acid may be employed herein as a first component of the inventive composition to assist in removing heavy ions and/or to act in concert with the non ionic surfactant to aid in attacking oily stains. If desired, it is also employed in combination with other chelating agents of the invention, to assist in controlling the final pi of the composition, when such other chelating agents are added as salts.
The compositions of the present invention also include at least one non ionic surfactant. A single non ionic surfactant having an appropriate LO can be utilized or mixtures of non ionic surfactants such that the HUB of the L
resulting mixture of non ionic surfactants is within the appropriate range. It has generally been found that the non ionic surfactant or mixture of non ionic surfactants should hove an HUB within the range of from 9 to 13 for optimum efficiency. It is preferred that the HUB be between 10 and 12. The optimum LO range is from 10.5 to 11.5.
Suitable non ionic surfactants include the ethoxylated nonylphenols such as the Surfonic N series available from Texaco Chemicals; and the ethoxylated octylphenols including the Briton X series available from Room & Has;
tune ethoxylated secondary fatty alcohols such as the Tergitol~series available from Union Carbide; the ethoxylated primary fatty alcohols suck as the Noodles available from Shell Chemicals; the ethoxylated sorbitan fatty acid esters such as the eons from ICY America and the sorbitan fatty acid esters such as the Spans from ICY
America The preferred surfactants include the ethoxylated nonylphenols especially those having a degree of ethyloxylation of from 3 to 10 moles of ethylene oxide, the ethoxylated octylphenols especially those having from 3 to 10 moles of ethylene oxide and the ethoxylated fatty secondary alcohols especially those having from 3 to 10 moles of ethylene oxide, As noted above mixtures of non ionic surfactants, which individually have an HUB
outside the range, can be utilized so long as the resultant HUB value of the mixture is within the range us set forth above. It is within this LO range that the stain removal properties of the composition of the resent J~10tes tile marts en `
of invention are at a maximum. Outside this range there is not sufficient oil and water dispersibility to provide suitable stain removing properties. Generally it has been found that the non ionic surfactants which are water L
dispersible have the best stain removal properties in the compositions of the present invention. It is thought that --water dispersible surfactants act both against oil and water borne stains.
Generally the composition should include from 5 to 40% by weight of at least one non ionic surfactant and preferably from 5 to 20% by weight and optimally 7 to 20~ by weight of at least one non ionic surfactant.
Tune compositions of the present invention are characterized as being substantially solvent free. By the term "substantially solvent free is meant a composition which contains less than 1% by weight of an organic water immiscible solvent such as isoparaffinic hydrocarbons, deodorized kerosene, d-limonene, the chlorinated solvents such as perchloroethylene, ethylene chloride etc., This -term is meant to exclude those non-polar water insoluble solvents typically used in stain removal compositions.
The compositions of the present invention can also include small additional amounts of other conventional materials including perfumes, defamers, bacteriacides, bacterstats and the like. Generally these materials are present in amounts of less than 2% by weight based on the amount of the composition.
Although the compositions of the resent invention are primarily designed for use as prespotting compositions, these compositions can also be used as laundry detergents or cleaning agents- These compositions can be used as heavy duty liquid laundry cleaning compositions.
Jo pi The compositions of the present invention can be prepared by any conventional means. Suitable methods include cold blending or other mixing processes. It is not necessary to use high shear or other strenuous mixing techniques to prepare the compositions of the present invention.
The prespotting compositions of the present invention will r now be illustrated by way of the following examples where all part percentages are Dye weight and all temperatures and degrees Celsius unless otherwise indicated.
Example A
An artificial serum soil was prepared as follows:
Part A
Weight Gyms Palmitic Acid 5.0 Starkey Acid 2.5 Coconut Oil 7.5 Paraffin 5.0 Spermaceti 7,5 Olive Oil 10.0 Skyline 2.5 Chloresterol 2.5 Oleic Acid 5.0 Linoleic Acid 2.5 50.0 Part B
, Oleic Acid 4.0 gyms.
Triethanolamine By gyms.
Do ".
;, - 1 0 - , Melt all the components of Part A together at 120-130 F.
Add Part to Part A with agitation while hot until homogeneous. At this time, 12 grams of air filter dirt (~200 mesh) is added and agitated for 10 minutes. From 50-100 ml of 120 F deionized water it added with agitation and stirred for 10 minutes. From 900-950 ml (to total 1000 ml) of 120~ F deionized water it added and agitated until the temperature of the mixture drops to 110~ F. The mixture is agitated in a Gifford Wood homogenizer for 10 minutes or until 120~ F. Pour the mixture through cheesecloth and store in 100 F oven. _ Example B
Grass stain slurry is prepared by placing 50 grams of fresh grass clippings and 500 grams of water in a blender and gradually increasing the speed to "liquefy". Add isopropyl alcohol as needed (up to 50 grams) to reduce foaming and blend for I minutes. Add remainder of isopropyl alcohol (to 50 grams total) and mix for 5 minutes. Strain through a 40 mess screen and keep refrigerated until use.
xam?le 1 A liquid prespotting composition hazing the following composition was prepared:
Water 84.1~, Nonylphenol ethyloxylate (6 moles ethylene oxide) (Surfonic N-60) 10 Ethylenediaminetetraacetic acid, tetrasodium salt (40% active) 5%
Citric acid (50% active) 0.9~
100. I . -This formulation was mixed and then placed into a squeeze bottle having a fountain type cap for testing. The composition had a pi of 7.9. The formulation was tested on 4 types of white clown swatches: 100% cotton, 65~35 I-polyester/ cotton, 50/50 polyesterfcotton, and 100%
polyester. Each swatch was stained with 7 stains, used motor oil, mustard, rape juice, chocolate, a 20% clay slurry, artificial serum (example A), and grass slurry (Example B). The swatches were saturated with the above formulation and allowed to sit for l minute. The swatches were then washed with Tide detergent available from Procter & Gamble with a dummy load of cotton towels. The L
stain removal characteristics were rated on a 5 point scale with l being essentially no removal and 5 being complete removal. The above formulation is compared to a liquid prespotter formulation (comparative) containing 2 sodium citrate, 8% of a Cl2-Cl5 ethoylated alcohol (7 moles ethylene oxide), 2.4% sodium zillion sulfonate and 87.6~ water. The results are shown in Table l.
TABLE l .. _ . _ . _ _ , . . . . ..
1100% Cotton 165 Polyester/150 Polyester/ll00% Polyester 1 135 Cotton 150 Cotton Stain Rex. l Coup. REX. l Coup. Rex. l Coup. I En. l Coup.
Used Oil 1 2.5 l 1 2 l 1 2.5 1.5 1 2 Mustard ¦ 2 2 ¦ 5 5 1 4 4 1 5 5 Grape juice 1 4 l 1 4.5 4 1 4.5 4 1 5 5 Chocolate 5 5 1 4.5 4.5 1 5 5 Clay 5 5 1 4 4 1 5 4.5 Grass 1 3 3 1 3 3 1 3 3 1 5 5 Serum 1 3.5 4 14.5 4.5 1 5 5 1 5 5 Composite 1 2.501.85 14.07 3.93 1 3.93 3.7I I 4.57 4.29 l I I
The formulation of Example l had a composite stain removal of approximately 3.75 for all four cloth types while the comparative composition had a composite of 3.46. The stain removal scores for both formulations are about equal for all stains except used motor oil. or this stain the comparative formula did not remove the stain for any cloth type while the formulation of Example l showed improved oil stain removal.
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.,, ; 12 Example 2 The procedure of Example 1 is repeated except that the formulation is changed as shown in Table 2. The formulations are tested in accordance with the procedure of Example 1. As the stain removal scores for stains other than used motor oil are essentially equivalent only the results showing the increased used motor oil removal are shown in Table 2.
RUN I A I B ¦ C I _ Water 1 88.1 1 86.1 1 82.1 Surfonic N-601 1 6.0 ¦ 8.0 1 12.0 Nay ETA (40~)2 1 5.0 i 5.0 1 5.0 Citric Acid t50~) 1 0.9 1 0.9 1 0.9 Used Oil Removal I
Cotton 1 1.5 1 2 1 3 1 _ 65 Pull Cotton I 1 1 1.5 1 2 50 Pull Cotton 1 2 1 2 1 3 Polyester 1 1.5 1 2 1 2 1 Surfonic N-60 - Same as used in Example 1.
2 Nay - Tetrasodium Salt of Ethylenediaminetetraacetic Acid.
3 Used Oil Removal - Used Motor Oil Removal as per test described in Example 1.
As it is apparent from the above, increasing the surfactant level increases the ability of the formulation to remove used motor oil from a variety of fabrics.
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Example 3 The procedure of Example 1 is followed with the exception that the formulations as -shown in Table 3 were prepared.
For comparison, similar formulations were prepared without tune tetrasodium salt of ethylenediamenetetraacedic acids.
As the only substantial differences between the formulations in stain removal is in the used motor oil removal, this was also shown in Table 3.
RUN I A I B ¦ C ¦ Do I En I F4 Water 1 74.1 1 69.1 1 64.1 1 80 1 75 1 70 Surfonic ~-6~1 1 20 1 25 1 30 1 20 1 25 1 30 Nay Eddy (40%)2 1 5.0 1 5.0 1 5.0 Citric Acid (50%) 1 0.9 1 0.9 1 0.9 Used Oil Removal Cotton 1 3 1 3.5 1 4 1 2 1 2 1 3 65 Pull Cotton 1 2 1 3 1 3.5 1 1 1 1.5 1 2 Polyester 1 3 1 4 1 3 ! 2 1 3 1 2.5 ___ I .. _ I_ I , I
1 - 3 As in Table 2. --4 Comparative I
14 : ! i Example 4 Procedure of Example 1 is repeated with the exception that the formulations used in Table 4 were run.
I r RUN ¦ A ¦ B I C I D
Water 1 84.1 1 ~4.1 1 84.1 1 84.1 Surfonic ~-601 1 9.5 1 9.25 1 9 1 8.5 1 _ Surfonic N-31.54 1 0.5 1 0.75 1 1 1 1.5 Nay ETA (40~)2 1 5.0 ¦ 5.0 ¦ 5.0 1 5.0 1 Citric Acid (50%) 1 US I I 1 0.9 1 0.9 _ . I . -I _ used Oil Removal I
Cotton 1 3.5 1 3.5 1 3.5 1 3.8 65 Pull Cotton 1 1.5 1 1.5 1 1.5 50 Pull Cotton I 2 1 1.5 1 1.5 1 1.5 Polyester 1 2.5 1 1.5 I _ . I I I I
1 - 3 As in Table 2 4 Surfonic ~-31.5 - Nonylphenol Ethoxylate (3.5 moles ethylene oxide) As apparent from 'liable 4, inclusion of small amounts of the surfactants can increase the oil removal against cotton but can effect its oil removal for other types of cloth.
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Example 5 In order to show the effect of different levels of chelating agent, the formulations in Table 5 were prepared and tested using the procedure of Example 1.
TABLE S
RUN I A I B I C ¦ D ¦ E ¦ F I G I Ho 1 T
Water 189.705l89.262l88~525l31.15 i7B.2 l72.25l72.3 l90 Nay DATA (40~)2 1 0.25 1 0.6251 1.25 ¦ 7.5 ¦10.0 112.5 115.0 1 Surfonic N-601 l10 l10 l10 110 l10 l10 l10 l10 Citric Acid ~50~)l 0.0451 0.1131 0.225¦ 1.35 1 1.8 1 2.251 2.7 1 Used Oil Removal3l I _ I l . I _ I I I
Cotton 1 1.5 1 lo I 1.5 1 2.5 1 2.0 1 2 1 1 1 1 65 Pull Cotton 1 1 1.5 1 1.5 1 1 2 1 1 1 1 1 1 Polyester 1 1.5 1 2 1 1.5 1 2 1 1~5 1 1.5 1 1.5 1 1.5 L _ .. ! . l l Al I
1 - 3 As in liable I.
4 Comparative As it is apparent from Table 5, at a level of from approximately 0.5 to about 4% is optimum or best oil removal.
Although at very low levels and higher levels of ETA some oil removal can be seen. In each of the formulations the citric acid was adjusted to maintain the pi at approximately 7.9.
I Jo I Y J I IS ' ; l o -- -Example 6 In order to show the effect of different chelating agents the formulations shown in Table 6 were prepared. In some cases the pi was adjusted while in other cases the pi of the material by itself was used.
I
Run I A 1 B I _ I D i E I F I G ¦ H I I I J I K
Water 184.ll84.l188 1~5 185 185 185 185 184.l184.l184.]
Surfonic N-60l lo lo 1lQ- lo lo 110 lo lo lo lo ho - -Nay EDNA (40~)2 ¦ 2. 5 1 Nay NAT ~40~)4 1 2. 51 5 . O I
Nay ETA l 1 1 2.01 I FAD (40%)6 ¦ 1 1 1 5.01 (N~4)2 A (40%)7 1 5.01 Nay DTPA (40%)8 l l l l I ¦ 5.01 1 ¦ 5.01 aye ala (40%)9 1 1 1 1 1 1 1 5.01 1 1 5.01 Try ietnanolamine I I I I I I i 1 5 . O I I 1 5 .
Citric Acid (50%~ 1 0.91 0.91 1 1 1 1 1 I Ply p I p - I
Used Oil Removal _. 1 1. 1 1 . I I I I I I I
Cotton 1 3.51 3.51 3.51 3.51 3 1 3.51 3.51 3 1 3.51 3.51 3.' _ 65 Pull Cotton 1 2 1 2 1 l.51 1.51 l.51 2 1 2 1 l 1 2 1 l.51 2 Polyester 1 1.51 1.51 l.51 2 1 l.51 2 1 1.51 1.51 2 pi _ 17.8~1 8.314.751 8.91 4.5112.1112 1 9.81 7.61 7.21 8 1 - 3 As in Table 2 4 Trisodium salt of nitrilotriacetic acid Disodium salt of ethylenediaminetetraacetic acid 6 Tetraammonium salt of ethylenediaminetetraacetic acid 7 Diammonium salt of ethylenediaminetetraacetic acid 8 Pentasodium salt ox diethylenetriaminepentaacetic acid 9 Trisodium salt of (N-hydroxyethyl) ethylenediaminetriacetic acid lo P = to pi as listed below ;, I .
Example In order to show the effect ox varying acids used to adjust the phi the formulations shown in Table 7 were prepared, using the procedure of Example 1. These formulations were also tested as in Example 1.
RUN I A ¦ B ¦ C ¦ D I E ¦ F
Water 1 84.1 1 84.1 1 84.1 1 84.1 1 84.1 1 84.1 Surfonic N_501 1 10 1 10 1 10 1 10 1 10 1 10 Nay dry (40~)2 1 5 1 5 1 5 1 5 1 5 1 5 Phosphoric Acid (85~)l I Pi Oxalicacid I I 1 0.5 Boric Acid I I I 1 2.6 Hydrochloric Aria I I I I ¦ P
Glacial hectic I I P
pi I 12 1 it 1 6.6 1 8.0 1 7.6 -¦ 7.6 Used Oil Removal Cotton 1 3.5 1 4 1 3.5 1 3 1 3 1 3.5 65 Pull Cotton 1 2 1 2 1 2 1 2 1 2 1 2 50 Pull Cotton 1 2 1 2 1 2 1 2 1 2 1 2 Polyester 1 2.5 1 2~5 1 2 1 2.5 1 OWE 1 2.5 Jo . I i l I I I
1 - 3 As in Table 2.
4 p = to pi listed below.
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Example 8 The procedure in formulation of Example 1 was prepared with the exception that the surfonic N60 was replaced with the following surfactants:
RUN SURFAClA~ r Nonylphenol ethoxylate 5 moles ethylene oxide - Igepal C0-520 B 3 parts nonylphenol ethoxylate to moles _ ethylene oxide) (Surfonic N-40) - 2 parts nonylphenol ethoxyla~e (9.5 moles ethylene oxide (Surfonic N 95~
C 2 parts Surfonic N-60 - 3 parts secondary alcohol ethoxylate (5 moles ethylene oxide) (Tergitol 15-S-5) D Tergitol 15-S 5 E Octylphenol ethoxylate (4.5 moles ethylene oxide) (Briton X-45) F 2 parts C12-15 linear alcohol ethoxylatel7 moles ethylene oxide) (Nudely 25-73 -1 part C12-15 linear alcohol ethoxylate(3 moles ethylene oxide) (Nudely 25-3) G 1 part sorbitanmonoleate ethoxylate ~20 moles ethylene oxide ITween 80) - 2 parts Surfonic N-40 H 1 port Inn 80 - 4 parts Surfonic N-40 -I olenO~ fri~Jei~arf~i Jo ;:
IT
The oil removal scores are shown in Table 8.
.
RUN ¦ ¦ B I C I D ¦ E ¦ F ¦ G ¦ H
. I I I I _ 1, I I , I I
sty Wash I
Cotton 1 3.5 1 3 1 4 1 4 1 2.5 1 4 1 3.5 1 2.5 1 65 PQ1Y/35 Cotton 2 1 2 1 3 1 2 1 2 1 1.5 1 1.5 1 2 I Pulse Cotton 2 1 1 1 2 1 2 1 1 1 2 1 1.5 1 1 Polyester 1 1. 5 1 1.5 1 1.5 1 1.5 1 1.5 ! 1 1 1 1 1 end. Wash Cotton 1 4.5 1 4.5 1 4.5 1 4.5 1 4.5 1 4.5 1 4.5 1 4.5 1 65 PQ1Y/35 Cotton 3.5 1 3.5 1 3.5 1 2.5 1 2.5 1 2.5 1 3 1 2.5 1 50 Pull Cotton 3 1 3 1 3 1 2 1 2 1 3 1 3 1 1.5 1 _ Polyester . 1 2.5 1 2.5 1 2 1 1. 5 1 1. 5 1 1.5 1 2 1 1. 5 1 ; 20 ,:
, .
Example 9 The procedure of Example 1 is repeated with the following formulation:
:, .
Water 86009~ r Nonylphenol ethoxylate Lydia%
Citric acid (50~ active) 2.40%
Sodium hydroxide (50~ sown) 1.51%
100. ox%
The pi of the formulation is between 7 and I The formulation is effective in removing stains as set forth in Example 1.
It has been surprisingly found that the aqueous prespot-tying composition of the present invention exhibits good cleaning including oil removal and recoil inhibition under most conditions encountered in the home laundry. The prespotting composition of the present invention has cleaning properties equal to or better than solvent containing compositions.
The compositions of the present invention are generally liquids of varying viscosities from rather thin compost-lions suitable primarily for use as pump spray or squeeze bottle spray compositions to rather thick formulations which would have to be spread on the cloth by some I`
alternate method.
Still further features and advantages of the composition of the present invention will become more apparent from the following more detailed description thereof.
The first component of the compositions to the present invention is a chelating agent. It is thought that the chelating agent functions in the composition to the present invention to assist in removal of certain heavy ions which inhibit the surfactancy of the non ionic `: `
" :.
to ; 4 .
surfactants. Also these chelating agents act in concert with the non ionic surfactant so that the surfactant is in the right configuration to attack oily stains from an aqueous system. Suitable chelating gents include the salts of ethylenediamine tetraacetic acid (ETA) such as ethylenediaminetetraacetic acid disodium salt, ethylenediaminetetraacetic acid diammonium salt, e-thylenediaminetetraacetic acid trisodium salt, ethylenediaminetetraacetic acid tetrasodium salt, ethylenediaminetetraacetic acid tetrapotassium salt, ethylenediaminetetraacetic acid tetrammonium salt, etc., the salts of diethylenetriaminepentaacetic acid (DTPA) such as diethylenetriaminepentaacetic acid pentasodium salt, diethylenetriaminepentaacetic acid pentapotassium salt, etc., the salts of (N-hydroxyethyl) -.
; 5 ' ethylenediaminetriacetic acid (HIDEOUT) such as (N-hydroxyethyl) ethylenediaminetriac2tic acid trisodium salt, (N-hydroxyethyl) ethylenediaminetriacetic acid tripotassium salt, etc., the salts of nitrilotriacetic acid (NAT) such as nitrilotriacetic acid trisodium salt, nitrilotriacetic acid tripotassium salt, etch other chelating agents such as triethanolamine, diethanolamine, !_ monoethanolamine, etc. and mixtures thereof. Preferred chelating agents are the ETA and the NAT type chelating agents especially the salts of ethylenediaminetretraacetic acid and particularly the tetrasodium, trisodium and _ disodium salts of ethylenediaminetetraacetic acid.
typically the chelating agents are present in the composition of the present invention in an amount of from about 0.1 to 6% by weight. It is within this weight range that the optimum cleaning and presetting efficiency is obtained. It is preferred that the chelating agents be present in the amount of from about 1.0 to I by weight and preferable from lo to 3.0~ by weight.
The chelating agents, especially the ETA, DTPA, and HIDEOUT
types, can be added to the composition of the present invention in the salt form, which is preferred since the -salts are water soluble, or in the water insoluble free acid form. If the chelating agents are added in the free acid form, the free acids must be at least partially neutralized to make them water soluble and form the chelating agent salts in situ. Suitable bases to neutralize the free acids are sodium hydroxide, potassium hydroxide and ammonium hydroxide. Sufficient vase is added to syllables the free acid chelating agent and to bring the pi of the composition within the range of about 4.5 to 12.2.
Jo 2 .-, - 6 - I
If the chelating agents are added as salts, these salts are often quite basic, having a pi often above 10. It may be necessary to add some acid or other pi buffering material to the composition of the present invention to adjust the pi to within a range of from 4.5 to 12.2 and preferably 6.5 to 8.5 and optimum 7 to 8. Suitable acids include citric acid, oxalic acid, acetic acid, hydrochloric acid, phosphoric, and the like. The primary function of the acid is to control the pi so that the chelating agent and the surfactants can remove the stains from the fabrics. Certain organic acids also have some cnelatin~ properties and therefore may contribute to the overall cleaning efficiency of the prespotting composition. Generally the acids, if used, are present in the compositions in the amount of from 0.2 to 2% by weight, however the amount of acid used is not critical.
I've preferred acid is citric acid.
Citric acid may also be employed as a chelating agent, since it possesses chelating properties. For this purpose it is employed in cnelatiny amounts from about 1.0 to 4.0 by weight and, preferably, from 1.5 to 3.0% by weight. A
suitable base can be employed to adjust the pi of the composition to within the preferred range from 6.5 to I
and, optimally, between 7 and 8.
Accordingly, citric acid may be employed herein as a first component of the inventive composition to assist in removing heavy ions and/or to act in concert with the non ionic surfactant to aid in attacking oily stains. If desired, it is also employed in combination with other chelating agents of the invention, to assist in controlling the final pi of the composition, when such other chelating agents are added as salts.
The compositions of the present invention also include at least one non ionic surfactant. A single non ionic surfactant having an appropriate LO can be utilized or mixtures of non ionic surfactants such that the HUB of the L
resulting mixture of non ionic surfactants is within the appropriate range. It has generally been found that the non ionic surfactant or mixture of non ionic surfactants should hove an HUB within the range of from 9 to 13 for optimum efficiency. It is preferred that the HUB be between 10 and 12. The optimum LO range is from 10.5 to 11.5.
Suitable non ionic surfactants include the ethoxylated nonylphenols such as the Surfonic N series available from Texaco Chemicals; and the ethoxylated octylphenols including the Briton X series available from Room & Has;
tune ethoxylated secondary fatty alcohols such as the Tergitol~series available from Union Carbide; the ethoxylated primary fatty alcohols suck as the Noodles available from Shell Chemicals; the ethoxylated sorbitan fatty acid esters such as the eons from ICY America and the sorbitan fatty acid esters such as the Spans from ICY
America The preferred surfactants include the ethoxylated nonylphenols especially those having a degree of ethyloxylation of from 3 to 10 moles of ethylene oxide, the ethoxylated octylphenols especially those having from 3 to 10 moles of ethylene oxide and the ethoxylated fatty secondary alcohols especially those having from 3 to 10 moles of ethylene oxide, As noted above mixtures of non ionic surfactants, which individually have an HUB
outside the range, can be utilized so long as the resultant HUB value of the mixture is within the range us set forth above. It is within this LO range that the stain removal properties of the composition of the resent J~10tes tile marts en `
of invention are at a maximum. Outside this range there is not sufficient oil and water dispersibility to provide suitable stain removing properties. Generally it has been found that the non ionic surfactants which are water L
dispersible have the best stain removal properties in the compositions of the present invention. It is thought that --water dispersible surfactants act both against oil and water borne stains.
Generally the composition should include from 5 to 40% by weight of at least one non ionic surfactant and preferably from 5 to 20% by weight and optimally 7 to 20~ by weight of at least one non ionic surfactant.
Tune compositions of the present invention are characterized as being substantially solvent free. By the term "substantially solvent free is meant a composition which contains less than 1% by weight of an organic water immiscible solvent such as isoparaffinic hydrocarbons, deodorized kerosene, d-limonene, the chlorinated solvents such as perchloroethylene, ethylene chloride etc., This -term is meant to exclude those non-polar water insoluble solvents typically used in stain removal compositions.
The compositions of the present invention can also include small additional amounts of other conventional materials including perfumes, defamers, bacteriacides, bacterstats and the like. Generally these materials are present in amounts of less than 2% by weight based on the amount of the composition.
Although the compositions of the resent invention are primarily designed for use as prespotting compositions, these compositions can also be used as laundry detergents or cleaning agents- These compositions can be used as heavy duty liquid laundry cleaning compositions.
Jo pi The compositions of the present invention can be prepared by any conventional means. Suitable methods include cold blending or other mixing processes. It is not necessary to use high shear or other strenuous mixing techniques to prepare the compositions of the present invention.
The prespotting compositions of the present invention will r now be illustrated by way of the following examples where all part percentages are Dye weight and all temperatures and degrees Celsius unless otherwise indicated.
Example A
An artificial serum soil was prepared as follows:
Part A
Weight Gyms Palmitic Acid 5.0 Starkey Acid 2.5 Coconut Oil 7.5 Paraffin 5.0 Spermaceti 7,5 Olive Oil 10.0 Skyline 2.5 Chloresterol 2.5 Oleic Acid 5.0 Linoleic Acid 2.5 50.0 Part B
, Oleic Acid 4.0 gyms.
Triethanolamine By gyms.
Do ".
;, - 1 0 - , Melt all the components of Part A together at 120-130 F.
Add Part to Part A with agitation while hot until homogeneous. At this time, 12 grams of air filter dirt (~200 mesh) is added and agitated for 10 minutes. From 50-100 ml of 120 F deionized water it added with agitation and stirred for 10 minutes. From 900-950 ml (to total 1000 ml) of 120~ F deionized water it added and agitated until the temperature of the mixture drops to 110~ F. The mixture is agitated in a Gifford Wood homogenizer for 10 minutes or until 120~ F. Pour the mixture through cheesecloth and store in 100 F oven. _ Example B
Grass stain slurry is prepared by placing 50 grams of fresh grass clippings and 500 grams of water in a blender and gradually increasing the speed to "liquefy". Add isopropyl alcohol as needed (up to 50 grams) to reduce foaming and blend for I minutes. Add remainder of isopropyl alcohol (to 50 grams total) and mix for 5 minutes. Strain through a 40 mess screen and keep refrigerated until use.
xam?le 1 A liquid prespotting composition hazing the following composition was prepared:
Water 84.1~, Nonylphenol ethyloxylate (6 moles ethylene oxide) (Surfonic N-60) 10 Ethylenediaminetetraacetic acid, tetrasodium salt (40% active) 5%
Citric acid (50% active) 0.9~
100. I . -This formulation was mixed and then placed into a squeeze bottle having a fountain type cap for testing. The composition had a pi of 7.9. The formulation was tested on 4 types of white clown swatches: 100% cotton, 65~35 I-polyester/ cotton, 50/50 polyesterfcotton, and 100%
polyester. Each swatch was stained with 7 stains, used motor oil, mustard, rape juice, chocolate, a 20% clay slurry, artificial serum (example A), and grass slurry (Example B). The swatches were saturated with the above formulation and allowed to sit for l minute. The swatches were then washed with Tide detergent available from Procter & Gamble with a dummy load of cotton towels. The L
stain removal characteristics were rated on a 5 point scale with l being essentially no removal and 5 being complete removal. The above formulation is compared to a liquid prespotter formulation (comparative) containing 2 sodium citrate, 8% of a Cl2-Cl5 ethoylated alcohol (7 moles ethylene oxide), 2.4% sodium zillion sulfonate and 87.6~ water. The results are shown in Table l.
TABLE l .. _ . _ . _ _ , . . . . ..
1100% Cotton 165 Polyester/150 Polyester/ll00% Polyester 1 135 Cotton 150 Cotton Stain Rex. l Coup. REX. l Coup. Rex. l Coup. I En. l Coup.
Used Oil 1 2.5 l 1 2 l 1 2.5 1.5 1 2 Mustard ¦ 2 2 ¦ 5 5 1 4 4 1 5 5 Grape juice 1 4 l 1 4.5 4 1 4.5 4 1 5 5 Chocolate 5 5 1 4.5 4.5 1 5 5 Clay 5 5 1 4 4 1 5 4.5 Grass 1 3 3 1 3 3 1 3 3 1 5 5 Serum 1 3.5 4 14.5 4.5 1 5 5 1 5 5 Composite 1 2.501.85 14.07 3.93 1 3.93 3.7I I 4.57 4.29 l I I
The formulation of Example l had a composite stain removal of approximately 3.75 for all four cloth types while the comparative composition had a composite of 3.46. The stain removal scores for both formulations are about equal for all stains except used motor oil. or this stain the comparative formula did not remove the stain for any cloth type while the formulation of Example l showed improved oil stain removal.
eta I
t~3J~
.,, ; 12 Example 2 The procedure of Example 1 is repeated except that the formulation is changed as shown in Table 2. The formulations are tested in accordance with the procedure of Example 1. As the stain removal scores for stains other than used motor oil are essentially equivalent only the results showing the increased used motor oil removal are shown in Table 2.
RUN I A I B ¦ C I _ Water 1 88.1 1 86.1 1 82.1 Surfonic N-601 1 6.0 ¦ 8.0 1 12.0 Nay ETA (40~)2 1 5.0 i 5.0 1 5.0 Citric Acid t50~) 1 0.9 1 0.9 1 0.9 Used Oil Removal I
Cotton 1 1.5 1 2 1 3 1 _ 65 Pull Cotton I 1 1 1.5 1 2 50 Pull Cotton 1 2 1 2 1 3 Polyester 1 1.5 1 2 1 2 1 Surfonic N-60 - Same as used in Example 1.
2 Nay - Tetrasodium Salt of Ethylenediaminetetraacetic Acid.
3 Used Oil Removal - Used Motor Oil Removal as per test described in Example 1.
As it is apparent from the above, increasing the surfactant level increases the ability of the formulation to remove used motor oil from a variety of fabrics.
;, . 'i.
Example 3 The procedure of Example 1 is followed with the exception that the formulations as -shown in Table 3 were prepared.
For comparison, similar formulations were prepared without tune tetrasodium salt of ethylenediamenetetraacedic acids.
As the only substantial differences between the formulations in stain removal is in the used motor oil removal, this was also shown in Table 3.
RUN I A I B ¦ C ¦ Do I En I F4 Water 1 74.1 1 69.1 1 64.1 1 80 1 75 1 70 Surfonic ~-6~1 1 20 1 25 1 30 1 20 1 25 1 30 Nay Eddy (40%)2 1 5.0 1 5.0 1 5.0 Citric Acid (50%) 1 0.9 1 0.9 1 0.9 Used Oil Removal Cotton 1 3 1 3.5 1 4 1 2 1 2 1 3 65 Pull Cotton 1 2 1 3 1 3.5 1 1 1 1.5 1 2 Polyester 1 3 1 4 1 3 ! 2 1 3 1 2.5 ___ I .. _ I_ I , I
1 - 3 As in Table 2. --4 Comparative I
14 : ! i Example 4 Procedure of Example 1 is repeated with the exception that the formulations used in Table 4 were run.
I r RUN ¦ A ¦ B I C I D
Water 1 84.1 1 ~4.1 1 84.1 1 84.1 Surfonic ~-601 1 9.5 1 9.25 1 9 1 8.5 1 _ Surfonic N-31.54 1 0.5 1 0.75 1 1 1 1.5 Nay ETA (40~)2 1 5.0 ¦ 5.0 ¦ 5.0 1 5.0 1 Citric Acid (50%) 1 US I I 1 0.9 1 0.9 _ . I . -I _ used Oil Removal I
Cotton 1 3.5 1 3.5 1 3.5 1 3.8 65 Pull Cotton 1 1.5 1 1.5 1 1.5 50 Pull Cotton I 2 1 1.5 1 1.5 1 1.5 Polyester 1 2.5 1 1.5 I _ . I I I I
1 - 3 As in Table 2 4 Surfonic ~-31.5 - Nonylphenol Ethoxylate (3.5 moles ethylene oxide) As apparent from 'liable 4, inclusion of small amounts of the surfactants can increase the oil removal against cotton but can effect its oil removal for other types of cloth.
I
Example 5 In order to show the effect of different levels of chelating agent, the formulations in Table 5 were prepared and tested using the procedure of Example 1.
TABLE S
RUN I A I B I C ¦ D ¦ E ¦ F I G I Ho 1 T
Water 189.705l89.262l88~525l31.15 i7B.2 l72.25l72.3 l90 Nay DATA (40~)2 1 0.25 1 0.6251 1.25 ¦ 7.5 ¦10.0 112.5 115.0 1 Surfonic N-601 l10 l10 l10 110 l10 l10 l10 l10 Citric Acid ~50~)l 0.0451 0.1131 0.225¦ 1.35 1 1.8 1 2.251 2.7 1 Used Oil Removal3l I _ I l . I _ I I I
Cotton 1 1.5 1 lo I 1.5 1 2.5 1 2.0 1 2 1 1 1 1 65 Pull Cotton 1 1 1.5 1 1.5 1 1 2 1 1 1 1 1 1 Polyester 1 1.5 1 2 1 1.5 1 2 1 1~5 1 1.5 1 1.5 1 1.5 L _ .. ! . l l Al I
1 - 3 As in liable I.
4 Comparative As it is apparent from Table 5, at a level of from approximately 0.5 to about 4% is optimum or best oil removal.
Although at very low levels and higher levels of ETA some oil removal can be seen. In each of the formulations the citric acid was adjusted to maintain the pi at approximately 7.9.
I Jo I Y J I IS ' ; l o -- -Example 6 In order to show the effect of different chelating agents the formulations shown in Table 6 were prepared. In some cases the pi was adjusted while in other cases the pi of the material by itself was used.
I
Run I A 1 B I _ I D i E I F I G ¦ H I I I J I K
Water 184.ll84.l188 1~5 185 185 185 185 184.l184.l184.]
Surfonic N-60l lo lo 1lQ- lo lo 110 lo lo lo lo ho - -Nay EDNA (40~)2 ¦ 2. 5 1 Nay NAT ~40~)4 1 2. 51 5 . O I
Nay ETA l 1 1 2.01 I FAD (40%)6 ¦ 1 1 1 5.01 (N~4)2 A (40%)7 1 5.01 Nay DTPA (40%)8 l l l l I ¦ 5.01 1 ¦ 5.01 aye ala (40%)9 1 1 1 1 1 1 1 5.01 1 1 5.01 Try ietnanolamine I I I I I I i 1 5 . O I I 1 5 .
Citric Acid (50%~ 1 0.91 0.91 1 1 1 1 1 I Ply p I p - I
Used Oil Removal _. 1 1. 1 1 . I I I I I I I
Cotton 1 3.51 3.51 3.51 3.51 3 1 3.51 3.51 3 1 3.51 3.51 3.' _ 65 Pull Cotton 1 2 1 2 1 l.51 1.51 l.51 2 1 2 1 l 1 2 1 l.51 2 Polyester 1 1.51 1.51 l.51 2 1 l.51 2 1 1.51 1.51 2 pi _ 17.8~1 8.314.751 8.91 4.5112.1112 1 9.81 7.61 7.21 8 1 - 3 As in Table 2 4 Trisodium salt of nitrilotriacetic acid Disodium salt of ethylenediaminetetraacetic acid 6 Tetraammonium salt of ethylenediaminetetraacetic acid 7 Diammonium salt of ethylenediaminetetraacetic acid 8 Pentasodium salt ox diethylenetriaminepentaacetic acid 9 Trisodium salt of (N-hydroxyethyl) ethylenediaminetriacetic acid lo P = to pi as listed below ;, I .
Example In order to show the effect ox varying acids used to adjust the phi the formulations shown in Table 7 were prepared, using the procedure of Example 1. These formulations were also tested as in Example 1.
RUN I A ¦ B ¦ C ¦ D I E ¦ F
Water 1 84.1 1 84.1 1 84.1 1 84.1 1 84.1 1 84.1 Surfonic N_501 1 10 1 10 1 10 1 10 1 10 1 10 Nay dry (40~)2 1 5 1 5 1 5 1 5 1 5 1 5 Phosphoric Acid (85~)l I Pi Oxalicacid I I 1 0.5 Boric Acid I I I 1 2.6 Hydrochloric Aria I I I I ¦ P
Glacial hectic I I P
pi I 12 1 it 1 6.6 1 8.0 1 7.6 -¦ 7.6 Used Oil Removal Cotton 1 3.5 1 4 1 3.5 1 3 1 3 1 3.5 65 Pull Cotton 1 2 1 2 1 2 1 2 1 2 1 2 50 Pull Cotton 1 2 1 2 1 2 1 2 1 2 1 2 Polyester 1 2.5 1 2~5 1 2 1 2.5 1 OWE 1 2.5 Jo . I i l I I I
1 - 3 As in Table 2.
4 p = to pi listed below.
' ? I
Example 8 The procedure in formulation of Example 1 was prepared with the exception that the surfonic N60 was replaced with the following surfactants:
RUN SURFAClA~ r Nonylphenol ethoxylate 5 moles ethylene oxide - Igepal C0-520 B 3 parts nonylphenol ethoxylate to moles _ ethylene oxide) (Surfonic N-40) - 2 parts nonylphenol ethoxyla~e (9.5 moles ethylene oxide (Surfonic N 95~
C 2 parts Surfonic N-60 - 3 parts secondary alcohol ethoxylate (5 moles ethylene oxide) (Tergitol 15-S-5) D Tergitol 15-S 5 E Octylphenol ethoxylate (4.5 moles ethylene oxide) (Briton X-45) F 2 parts C12-15 linear alcohol ethoxylatel7 moles ethylene oxide) (Nudely 25-73 -1 part C12-15 linear alcohol ethoxylate(3 moles ethylene oxide) (Nudely 25-3) G 1 part sorbitanmonoleate ethoxylate ~20 moles ethylene oxide ITween 80) - 2 parts Surfonic N-40 H 1 port Inn 80 - 4 parts Surfonic N-40 -I olenO~ fri~Jei~arf~i Jo ;:
IT
The oil removal scores are shown in Table 8.
.
RUN ¦ ¦ B I C I D ¦ E ¦ F ¦ G ¦ H
. I I I I _ 1, I I , I I
sty Wash I
Cotton 1 3.5 1 3 1 4 1 4 1 2.5 1 4 1 3.5 1 2.5 1 65 PQ1Y/35 Cotton 2 1 2 1 3 1 2 1 2 1 1.5 1 1.5 1 2 I Pulse Cotton 2 1 1 1 2 1 2 1 1 1 2 1 1.5 1 1 Polyester 1 1. 5 1 1.5 1 1.5 1 1.5 1 1.5 ! 1 1 1 1 1 end. Wash Cotton 1 4.5 1 4.5 1 4.5 1 4.5 1 4.5 1 4.5 1 4.5 1 4.5 1 65 PQ1Y/35 Cotton 3.5 1 3.5 1 3.5 1 2.5 1 2.5 1 2.5 1 3 1 2.5 1 50 Pull Cotton 3 1 3 1 3 1 2 1 2 1 3 1 3 1 1.5 1 _ Polyester . 1 2.5 1 2.5 1 2 1 1. 5 1 1. 5 1 1.5 1 2 1 1. 5 1 ; 20 ,:
, .
Example 9 The procedure of Example 1 is repeated with the following formulation:
:, .
Water 86009~ r Nonylphenol ethoxylate Lydia%
Citric acid (50~ active) 2.40%
Sodium hydroxide (50~ sown) 1.51%
100. ox%
The pi of the formulation is between 7 and I The formulation is effective in removing stains as set forth in Example 1.
Claims (18)
1. A laundry prespotting composition comprising:
(a) from about 0.1 to 6% by weight of a chelating agent;
(b) from about 5 to 40% by weight of at least one nonionic surfactant wherein the surfactant has an HLB such that the combined HLB for all surfactants present is within the range of from 9 to 13; and (c) water;
wherein the composition is substantially solvent free and wherein the composition has a pH within the range of from about 4.5 to 12.2.
(a) from about 0.1 to 6% by weight of a chelating agent;
(b) from about 5 to 40% by weight of at least one nonionic surfactant wherein the surfactant has an HLB such that the combined HLB for all surfactants present is within the range of from 9 to 13; and (c) water;
wherein the composition is substantially solvent free and wherein the composition has a pH within the range of from about 4.5 to 12.2.
2. The composition of Claim 1 wherein the chelating agent is selected from the group consisting of salts of ethylenediaminetetraacetic acid, salts of diethylenetriaminepentaacetic acid, salts of (N-hydroxyethyl) ethylenediaminetriacetic acid, salts of nitrilotriacetic acid, triethanolamine, diethanolamine, monoethanolamine, and mixtures thereof.
3. The composition of Claim 1 wherein the chelating agent is present in an amount of from 1.0 to 4.0% by weight.
4. The composition of Claim 1 wherein the chelating agent is present in an amount of from 1.5 to 3.0% by weight.
5. The composition of Claim 1 wherein the chelating agent is selected from the group consisting of salts of ethylenediaminetetraacetic acid, salts of diethylenetriaminepentaacetic acid, salts of (N-hydroxyethyl) ethylenediaminetriacetic acid, salts of nitrilotriacetic acid and mixtures thereof.
6. The composition of Claim 1 wherein the chelating agent is selected from the group consisting of ethylenediaminetetraacetic acid disodium salt, ethylenediaminetetraacetic acid diammonium salt, ethylenediaminetetraacetic acid dipotassium salt, ethylenediaminetetraacetic acid tripotassium salt, ethylenediaminetetraacetic acid trisodium salt, ethylenediaminetetraacetic acid tetrasodium salt, ethylenediaminetetraacetic acid tetrapotassium salt, ethylenediaminetetraacetic acid tetrammonium salt, nitrilotriacetic acid trisodium salt, nitrilotriacetic acid tripotassium salt, and mixtures thereof.
7. The composition of Claim 1 wherein the chelating agent is selected from the group consisting of ethylenediaminetetraacetic acid tetrasodium salt, ethylenediaminetetraacetic acid trisodium salt, ethylenedianinetetraacetic acid disodium salt, and mixtures thereof.
8. The composition of Claim 1 wherein the chelating agent is citric acid.
9. The composition of Claim 1 wherein the composition includes an effective amount of an acid sufficient to adjust the pH of the composition to within the range of 4.5 to 12.2.
10. The composition of Claim 1 wherein the composition has a pH within the range of from 6.5 to 8.5.
11. The composition of Claim 1 wherein the composition has a pH within the range of from 7.0 to 8Ø
12. The composition of Claim 1 wherein the HLB range is from 10 to 12.
13. The composition of Claim 1 wherein the HLB range is from 10.5 to 11.5.
14. The composition of Claim 1 wherein the nonionic surfactant is selected from the group consisting of ethoxylated nonylphenols, ethoxylated octylphenols, ethoxylated secondary fatty alcohols, ethoxylated primary fatty alcohols, ethoxylated sorbitan fatty acid esters, sorbitan fatty acid esters and mixture thereof.
15. The composition of Claim 1 wherein the surfactants are present in the amount from 5.0 to 20.0% by weight.
16. The composition of Claim 1 wherein the surfactants are present in the amount from 7.0 to 20.0% by weight.
17. A laundry prespotting composition comprising (a) from about 1.0 to 4.0% by weight of a chelating agent selected from the group consisting of salts of ethylenediaminetetraacetic acid, salts of diethylenetriaminepentaacetic acid, salts of (N-hydroxyethyl) ethylenediaminetriacetic acid, salts of nitrilotriacetic acid and mixtures thereof;
(b) from about 5 to 20% by weight of at least one nonionic surfactant selected from the group consisting of ethoxylated nonylphenols, ethoxylated octylphenols, ethoxylated secondary fatty alcohols, ethoxylated primary fatty alcohols, ethoxylated sorbitan fatty acid esters, sorbitan fatty acid esters and mixtures thereof, wherein surfactant has an HLB such that the combined HLB for all surfactants present is within the range of from 10 to 12; and (c) water wherein the composition is substantially solvent free and wherein the composition has a pH within the range of 6.5 to 8.5.
(b) from about 5 to 20% by weight of at least one nonionic surfactant selected from the group consisting of ethoxylated nonylphenols, ethoxylated octylphenols, ethoxylated secondary fatty alcohols, ethoxylated primary fatty alcohols, ethoxylated sorbitan fatty acid esters, sorbitan fatty acid esters and mixtures thereof, wherein surfactant has an HLB such that the combined HLB for all surfactants present is within the range of from 10 to 12; and (c) water wherein the composition is substantially solvent free and wherein the composition has a pH within the range of 6.5 to 8.5.
18. A laundry prespotting composition comprising:
(a) from about 1.0 to 4.0% by weight of citric acid;
(b) from about 5 to 20% by weight of a nonionic surfactant having an HLB such that the combined HLB for all surfactants present is within the range from 10 to 12, said surfactant selected from the group consisting of ethoxylated nonylphenols, ethoxylated octylphenols, ethoxylated secondary fatty alcohols, ethoxylated primary fatty alcohols, ethoxylated sorbitan fatty acid esters, sorbitan fatty acid esters and mixtures thereof; and (c) water the composition being substantially solvent free and having a pH from 6.5 to 8.5.
(a) from about 1.0 to 4.0% by weight of citric acid;
(b) from about 5 to 20% by weight of a nonionic surfactant having an HLB such that the combined HLB for all surfactants present is within the range from 10 to 12, said surfactant selected from the group consisting of ethoxylated nonylphenols, ethoxylated octylphenols, ethoxylated secondary fatty alcohols, ethoxylated primary fatty alcohols, ethoxylated sorbitan fatty acid esters, sorbitan fatty acid esters and mixtures thereof; and (c) water the composition being substantially solvent free and having a pH from 6.5 to 8.5.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US653,865 | 1976-01-30 | ||
| US54120183A | 1983-10-12 | 1983-10-12 | |
| US541,201 | 1983-10-12 | ||
| US06/653,865 US4595527A (en) | 1984-09-25 | 1984-09-25 | Aqueous laundry prespotting composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1226782A true CA1226782A (en) | 1987-09-15 |
Family
ID=27066647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000465210A Expired CA1226782A (en) | 1983-10-12 | 1984-10-11 | Aqueous laundry prespotting composition |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0137475A2 (en) |
| AU (1) | AU575860B2 (en) |
| CA (1) | CA1226782A (en) |
| NZ (1) | NZ209862A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016122863A1 (en) * | 2015-01-29 | 2016-08-04 | Ecolab Usa Inc. | Composition and method for treatment of stains in textiles |
| US9719051B2 (en) | 2009-09-18 | 2017-08-01 | Ecolab Usa Inc. | Treatment of non-trans fats with acidic tetra sodium L-glutamic acid, N, N-diacetic acid (GLDA) |
| US10253281B2 (en) | 2012-08-20 | 2019-04-09 | Ecolab Usa Inc. | Method of washing textile articles |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4828750A (en) * | 1987-12-02 | 1989-05-09 | Colgate-Polmolive Company | Fabric rinse composition to remove surfactant residues |
| US4983315A (en) * | 1989-08-10 | 1991-01-08 | The Procter & Gamble Company | N,N'-(1-oxo-1,2-ethanediyl)-bis(aspartic acid), salts and use in detergent compositions |
| US5340501A (en) * | 1990-11-01 | 1994-08-23 | Ecolab Inc. | Solid highly chelated warewashing detergent composition containing alkaline detersives and Aminocarboxylic acid sequestrants |
| US5362412A (en) * | 1991-04-17 | 1994-11-08 | Hampshire Chemical Corp. | Biodegradable bleach stabilizers for detergents |
| US5395555A (en) * | 1993-11-22 | 1995-03-07 | Eastman Kodak Company | Cleaning composition for animal urine removal |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3956198A (en) * | 1972-12-15 | 1976-05-11 | Days-Ease Home Products Corporation | Liquid laundry washing-aid |
| US4387040A (en) * | 1981-09-30 | 1983-06-07 | Colgate-Palmolive Company | Liquid toilet soap |
| US4465619A (en) * | 1981-11-13 | 1984-08-14 | Lever Brothers Company | Built liquid detergent compositions |
-
1984
- 1984-10-05 EP EP19840111986 patent/EP0137475A2/en not_active Withdrawn
- 1984-10-10 AU AU34079/84A patent/AU575860B2/en not_active Ceased
- 1984-10-11 CA CA000465210A patent/CA1226782A/en not_active Expired
- 1984-10-12 NZ NZ20986284A patent/NZ209862A/en unknown
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9719051B2 (en) | 2009-09-18 | 2017-08-01 | Ecolab Usa Inc. | Treatment of non-trans fats with acidic tetra sodium L-glutamic acid, N, N-diacetic acid (GLDA) |
| US10253281B2 (en) | 2012-08-20 | 2019-04-09 | Ecolab Usa Inc. | Method of washing textile articles |
| US10995305B2 (en) | 2012-08-20 | 2021-05-04 | Ecolab Usa Inc. | Method of washing textile articles |
| US11773350B2 (en) | 2012-08-20 | 2023-10-03 | Ecolab Usa Inc. | Method of washing textile articles |
| WO2016122863A1 (en) * | 2015-01-29 | 2016-08-04 | Ecolab Usa Inc. | Composition and method for treatment of stains in textiles |
| US9670438B2 (en) | 2015-01-29 | 2017-06-06 | Ecolab Usa Inc. | Composition and method for the treatment of sunscreen stains in textiles |
| AU2016212004B2 (en) * | 2015-01-29 | 2019-12-05 | Ecolab Usa Inc. | Composition and method for treatment of stains in textiles |
Also Published As
| Publication number | Publication date |
|---|---|
| AU575860B2 (en) | 1988-08-11 |
| AU3407984A (en) | 1985-04-18 |
| EP0137475A2 (en) | 1985-04-17 |
| NZ209862A (en) | 1987-04-30 |
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Legal Events
| Date | Code | Title | Description |
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| MKEX | Expiry |