CA1227714A - Metastable prespotting composition - Google Patents

Metastable prespotting composition

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Publication number
CA1227714A
CA1227714A CA000465209A CA465209A CA1227714A CA 1227714 A CA1227714 A CA 1227714A CA 000465209 A CA000465209 A CA 000465209A CA 465209 A CA465209 A CA 465209A CA 1227714 A CA1227714 A CA 1227714A
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CA
Canada
Prior art keywords
composition
acid
weight
salts
ethoxylated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000465209A
Other languages
French (fr)
Inventor
Mark M. Gipp
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SC Johnson and Son Inc
Original Assignee
SC Johnson and Son Inc
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Publication date
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Publication of CA1227714A publication Critical patent/CA1227714A/en
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Classifications

    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16Organic compounds
    • C11D3/26Organic compounds containing nitrogen
    • C11D3/33Amino carboxylic acids
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66Non-ionic compounds
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66Non-ionic compounds
    • C11D1/72Ethers of polyoxyalkylene glycols
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0008Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
    • C11D17/0017Multi-phase liquid compositions
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/43Solvents

Abstract

ABSTRACT

A metastable laundry prespotting composition comprising a chelating agent, at least one surfactant, solvent and water.

Description

1227~14 This invention relates to laundry prespotting compositions. More particularly this invention relates to metastable emulsion laundry 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 10 in trigger spray bottles or squeeze bottles. These aqueous based prespotting compositions 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 of-fictive in removing oil-borne stains, such as cooking oil, fat, spaghetti sauce, serum, grease, motor oil 20 and the like. It is possible to formulate solvent-based prespotting compositions 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 attempts to replace the j solvent with water in prespotter compositions for both aerosol and non-aerosol formulation types.
The object of the present invention is to provide a liquid prespotting composition having superior lZZ771~

cleaning properties for both oil and water-borne stains.
The present invention provides a metastable laundry prespotting composition comprising:
pa) from about 0.25 to 10~ by weight of a chelating agent;
(b) from about 1 to 35% by weight of at least one non ionic surfactant wherein the surfactant has an HUB such that the combined HUB for all surfactants 10 present is within the range of from 9 to 13;
(c) from about 5 to 60~ by weight of a sol-vent; and id) water wherein the composition has a pi of from 4.5 to 12.2 The composition of the present invention has cleaning properties equal to or better than non aqueous solvent containing compositions. The composition has good oily stain removal under most conditions encounter-Ed in the home laundry.
The compositions of the present invention are primarily useful as liquid prespotting compositions which are suitable to be dispersed from pump spray or squeeze bottles.
Further features and advantages of the come 25 position of the present invention will become more apt parent from the following more detailed description thereof.
The laundry prespotting compositions of the present invention comprise a metastable laundry pro-30 spotting composition having from 0.25 to 10% by weight of a chelating agent; from about 1 to 35% by weight of at least one non ionic surfactant, said surfactant having HUB such that the combined HUB of the sun-fact ants is within the range of from 9 to 13; from 35 about 5 to 60% by weight of a solvent and the bet-ante of the composition comprising water wherein the composition has a pi within the range of from 4.5 ` to 12.2 lZ27714 By the term "metastable" is meant a liquid composition which tends to separate into at least two phases but upon shaking forms a substantially uniform composition which remains substantially uniform for 5 at least about 15 minutes.
This metastable condition is critical to the performance of the compositions of the present in-mention. If a similar formulation is prepared as a stable emulsion, the cleaning is substantially reduced.
10 It is thought that the metastable condition allows both the oil and water phase to be in the exterior phase at the same time so that the appropriate cleaning agent can attack the stain efficiently.
The first component of the compositions to 15 the present invention is a chelating agent. It is thought that the chelating agent functions in the combo-session to the present invention to assist in removal of certain heavy ions which inhibit the surfactancy of the non ionic surfactants. Also these chelating ; 20 agents act in concert with the monionic surfactant so that the surfactant is in the right configuration to attack oily stains from an aqueous system. Suitable chelating agents include the salts of ethylenediamine tetraacetic acid (ETA) such as ethylenediaminetetra-25 acetic acid disodium salt, ethylenediaminetetraacetic acid diammonium salt, ethylenediaminetetraacetic acid trisodium salt, ethylenediaminetetraacetic acid twitter-sodium salt, ethylenediaminetetraacetic acid twitter-potassium salt, ethylenediaminetetraacetic acid let-30 r~nium salt, etc., the salts of diethylenetriamine-pentaacetic acid (DTPA) such as diethylenetriamine-pentaacetic acid pentasodium salt, diethylenetri-aminepentaacetic acid pentapotassium salt, etc. the salts of (N-hydroxyethyl) ethylenediaminetriacetic acid (HIDEOUT) such as (N-hydroxyethyl) ethylenediamine-triacetic acid trisodium salt, (N-hydroxyethyl) ethyl-enediaminetriacetic acid tripotassium salt, etc., the :' .

Jo salts of nitrilotriacetic acid (NAT) such as neutral-triacetic acid trisodium salt, nitrilotriacetic acid tripotassium salt, etc., other chelating agents such as triethanolamine, diethanolamine, monoethanolamine, etc. and mixtures thereof. Preferred chelating agents are the ETA and the NAT type chelating agents en-specially the salts of ethylenediaminetretraacetic acid an particularly the tetrasodium, trisodium and dip sodium salts of ethylenediaminetetraacetic acid.
Typically the chelating agents are present in the composition of the present invention in an amount of from about 0.25 to 10~ by weight. It is within this weight range that the optimum cleaning and prespotting efficiency is obtained. It is preferrer 15 that the chelating agents be present in the amount of from about 1.0 to 6% by weight and preferable from 1.5 to 4.0~ by weight.
The chelating agents, especially the ETA, DTPA, and HIDEOUT types, can be added to the composition 20 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 25 them water soluble and form the chelating agent salts in situ. Suitable bases to neutralize the free acids are sodium hydroxide, potassium hydroxide and am-minim hydroxide. Sufficient base is added to syllables - the free acid chelating agent and to bring the pi of 30 the composition within the range of about 4.5 to 12.2.
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 most preferably 7 to 8. Suitable acids include citric acid, AYE

oxalic acid, acetic acid, hydrochloric acid, pros-phonic, 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.
5 Certain organic acids also have some chelating prop-reties and therefore may contribute to the overall cleaning efficiency of the prespotting composition.
Generally the acids, if used, are present in the come positions in the amount of from 0.2 to 2% by weight, lo however the amount of acid used is not critical. The preferred acid is citric acid.
The composition of the present invention also include at least one non ionic surfactant. A
single non ionic surfactant having an appropriate HUB
15 can be utilized or mixtures of non ionic surfactants such that the HUB of the 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 have an HUB
20 within the range of from 9 to 13 for optimum efficiency.
It is preferred that HUB be between 10 and 12. The optimum HUB range is from 10.5 to 11.5.
Suitable non ionic surfactants include the ethoxylated nonylphenols such as the Surfonic N
25 series available from Texaco Chemicals, and the ethics-fated octylphenols including the Briton X series avail-able from Room & Hays; the ethoxylated secondary fatty alcohols such as the Tergitol series available from Union Carbide; the ethoxylated primary fatty 30 alcohols such as the Noodles available from Shell Chemicals; the ethoxylated sorbitan fatty acid esters such as the Tweets from ICY America and the sorbitan fatty acid esters such as the Spans from ICY America The preferred surfactants include the etnoxy-35 fated nonylphenols especially those having a degree ofethyloxylation of from 3 to lo moles of ethylene oxide, the ethoxylated octylphenols especially those having dcno~s fry ok I, from 3 to 10 moles of ethylene oxide and the ethoxylated 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
5 outside the range, can be utilized so long as the no-sultan HUB value of the mixture is within the range as set forth above. It is within this HUB range that the stain removal properties of the composition of the present invention are at a maximum. Outside this range 10 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 dispersible have the best stain removal properties in the compositions of the present invention.
15 It is thought that water dispersible surfactants can act both against oil and water borne stains.
Generally the composition should include from 1 to 35% by weight of at least one non ionic surfactant and preferably from 5 to 20% by weight and optimally 20 7 to 20% by weight of at least one non ionic surfactant.
The composition of the present invention also can include from about 5 to 60% by weight of a suit-able solvent. It is preferred that relatively small amounts of solvent be used. The preferred range is 5 25 to 30% by weight and the optimum range is 7 to 20% by weight of solvent.
Suitable solvents include hydrocarbon solvent such as isoparaffinic hydrocarbons including the mixed C10 to C isoparaffinic hydrocarbons sold under the 30 trade name Isobar by Exxon Chemicals, Houston, Texas.
These isoparaffinic hydrocarbons are branched chain fully saturated hydrocarbons and are often character-iced by boiling range. These mixtures are available in boiling ranges of from 98C. to 210C. In addition to 35 the isoparaffinic hydrocarbons, petroleum solvents having a boiling range of from 195C to 250C, deodorized .

SUE

kerosene, mineral spirits, terrapins such as d-limonene and aromatic solvents such as zillion, etc. are also acceptable. In addition to these solvents certain chlorinated solvents such as l,l,l-Trichloroethane, 5 perchloroethylene and ethylene chloride, certain kittens such as methyl ethyl kitten, etc., acetone, N-methyl-
2-pyrrolidone, certain ethers such as dipropyleneglycol monomethyl ether, latex propanol, etc. can also be utilized. Certain of these solvents may not be suit-10 able for use in a home laundry. However, the preferred solvents are those having a low odor, especially the isoparaffinic hydrocarbons, mineral spirits, deodorized kerosene and mixtures. Furthermore the most preferred isoparaffinic hydrocarbons are those having a boiling 15 range of from 157C. to 210C. and preferably those having a boiling range of 177C. to 202C.
It is further preferred that only a small percentage, less than 5% by weight of the composition, of the solvent present, be solvents such as the terrapins, 20 kittens, aromatics, ethers, and chlorinated hydra-carbons. Typically these solvents are used as adjutants ', to boost the stain removal in combination with the is-paraffinic hydrocarbons, mineral spirits, deodorized kerosene, etc.
~-~ 25 The compositions of the present invention can also include small additional amounts of other con-ventional materials including perfumes, defamers, bacteriacides, bacterstats and the like. Generally these materials are present in amounts of less than 2%
30 by weight based on the amount of the composition.
It is critical to the performance of the compositions of the present invention that the combo-sessions be metastable. Although the compositions lo should separate into at least two phases on standing, t 35 the separation could occur over a period of as long as one or two days. As noted above, the compositions must be capable of remaining in their unseparated state ton , "``' ' - 8 - 1Z277~4 at least about 15 minutes. If the compositions separate at a faster rate, the usefulness of the compositions is lessened as the composition would have to be shaken continually.
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 technique to prepare the compositions of the 10 present invention.
The prespotting compositions of the pros-en invention will now be illustrated by way of the ; following examples where all part percentages are my weight and all temperatures and degrees Celsius 15 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 ` 30 50.0 Part B
Oleic Acid 4.0 gyms.
Triethanolamine 8.0 gyms.

Melt all the components of Part A together at 35 120-130F. Add Part B 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 120F. deionized water is .
i `, g added with agitation and stirred for 10 minutes. From 900-951 ml (to total 1000 ml) of 120F. deionized water is added and agitated until the temperature of the mixture drops to OFF. The mixture is agitated 5 in a Gifford Wood Homogenizer for 10 minutes or until 120F. Pour the mixture through cheesecloth and store in 100 F. oven.

EXAMPLE B

Grass stain slurry is prepared by placing 10 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 20 minutes.
Add remainder of isopropyl alcohol (to 50 grams total) 15 and mix for 5 minutes. Strain through a 40 mesh screen and keep refrigerated until use.

Example 1 The following formulation was prepared:
Jo Tetrasodium salt of ethylenediamine-tetraacetic acid (40~) 5.0 I Citric Acid (50%) 0.9 ; Nonylphenol Ethoxylate (6 moles ethylene oxide) (Surfonic N-60) 8.0 Nonylphenol Ethoxylate (3.5 moles ethylene oxide) (Surfonic N-31.5) 0.5 IsoparaffOnic hydrocarbon (boiling range 177 C to 202 C) (Isobar K) 16.0 ! d-limonene 1.5 Sorbitan moonlit (Span 80) 0.9 Sorbitan moonlit etlloxylate (20 moles ethylene oxide)(Tween 80) 1.1 Water I

I:
.
. . .

122'7714 The above formulation was evaluated for stain removal by placing the composition in a squeeze jot-lie with a fountain type cap. The formulation was competed to a solvent based formulation sold by Clerks 5 Corp. This commercially available product is believed to contain about 70% of an isoparaffinic hydrocarbon solvent similar to spar K and about 30% of a linear C12 containing fatty alcohol ethoxylate having about 6.5 moles of ethylene oxide similar to Nudely 23-6.5 10 from Shell Oil. The formulations were tested on 3 types of white cloth swatches; 100% cotton, 65/35 polyp ester/cotton, and 100~6 polyester. swatch was stained with 7 stains; used motor oil, mustard, grape juice, chocolate, a 20g6 clay slurry, artificial serum 15 (Example A), and grass slurry (Example B).
The swatches were saturated with the above formulation and allowed to sit for 1 minute. The swatches were then washed with Tide detergent, avail-able from Procter & Gamble, with a dummy load of cot-20 ton towels. The stain removal characteristics were rated on a 5 point scale with 1 being essentially no removal and 5 being complete removal. eye results I are shown in Table 1.
,:
~!~ TABLE 1 '' 10096 Cotton 65 Polyester/ 1 100% Polyester STAIN 35 ton En. 1 Coup. I By. 1 Carp. I En. 1 Camp.
Used Oil 4.5 4.5 4 4 1 3.5 3.5 Mustard 2 2 4 4 5 5 30 Grape juice 4 2 3.5 3 1 5 5 Chocolate 3 3 3 2.5 1 5 5 Clay 1 1 l 3.5 3 3.5 3.5 Grass 3 3 3 3 4 4 Serum 3 3 4 4 1 5 5 35 Composite 20.5 18.5 25.0 23.5 l31 31 , h :' From the above table it is apparent that the Jo ' `` 1227714 formula of Example 1 performs equivalent to the all solvent formula in most respects and somewhat better against a few stains.

i:

1' I;

"I

;:~

Jo , i2277~

Example 2 The following formulation was prepared:
Borax 1.5%
Tetrasodium salt of ethylenediamine-tetraacetic acid (40%) 5.0%
Citric Acid (50%) 2.0%
Surfonic N60 8.0%
I`.. Surfonic N31-5 0.5%
Isopar-K 8.0%
Water 71.0%
Span 80 0.9%
Tweet 80 1.1%
Zillion 2.0%

This formulation was tested as in Example 1 with similar results.

oJcn~e~ I e ala 1227~

Example 3 The formulation of Example 2 was prepared with the exception that the Zillion was replaced by the following:

R SOLVENT
A Perchloroethylene B Methylethylketone C Dipropyleneglycol moo-methyl ether D Acetone E Ethylene chloride F d-limonene G N-methyl-2-pyrrolidone H l-Butoxypropanol Each of the above formulations when tested as in Example 1 performed in a similar manner.

Example 4 The formulation of Example 1 was prepared with the exception that the Isopar-K level was 12%
and the water level of 70.1%. This formulation when compared to that of Example 1 gave essentially similar results.

i227714 Example 5 The formulation having the following combo-session was prepared:
Tetrasodium salt of ethylenediamine-tetraacetic acid 5.0 Citric Acid (50%) 0.9 Surfonic N-60 8.0 Surfonic N-31.5 0.5 Isobar K 12.0 lo 1,1,1 Trichloroethane 2.0 Span 80 0.9 Tweet 80 1.1 Water 69.6 This formulation when tested as in Example 1 give approximately similar results.

Example 6 The formulation of Example 5 was prepared with the exception that the Isopar-K level was increased to 16~ and 20~ with a corresponding reduction in the water content. Both of these formulas performed en-sentially equivalent to the formulation of Example 5.

2277~4 Example 7 A series of formulations were prepared have in the following composition:
Water Varies Tetrasodium ETA (40%) Varies Citric Acid (50%) to pi 7.9 Surfonic N-60 Lowe Isobar K 12.0 100 .0 10 The formulations shown in Table 2 were tested as in Example 1. The same comparative formula-lion as in Example 1 was also used.

- 1 6 - 122'771~

Run A s C D E F G H If Coup.
.
Water 77.71 77.26 75.05 72.1 66.2 60.3 54.4 48.5 78 ETA 0.25 0.625 2.5 5.0 10.0 15 20 25 Cotton -Used Motor Oil 2 2 2.5 3 3 3 2.5 2.5 2 4 Grape 2 2 2 2.5 2.5 2.5 2.5 2.5 Chocolate 3 3 3 3 3 3 3 3 3 3.5 Clay 4 4 4 3.5 4.5 4.5 4.5 4.5 3.5 2.5 Serum 3 3 3 3 3 3 3 3 3 2 Used Motor Oil 2 2.5 3.5 3.5 3.5 4 3 3 2.5 4.5 Grape 4 4 4 4-5 4-5 4-5 4-5 4-5 3 3 Chocolate 3.5 3.5 3.5 4 4 4 4 4 3 3 Clay 4 4 4 4.5 q.5 4.5 4.5 4.5 4 4 5 Serum 4 4 4 4 3-5 3-5 3-5 3-5 4 4 Polyester Used Motor Oil 2 2.5 3 3 3 3 3 3 2 4.5 Grape 4.5 4.5 4.5 5 5 5 5 5 4-5 5 Clay 3 3 4 4 4 4 3.5 3.5 2.5 4 Serum 4.5 4.5 4.5 4.5 4 4 4 4 4-5 4-5 -- Comparative Example 2 - Liquid Kirks (See Example 1) The stain removal scores for mustard and grass for all three cloth types were identical and therefore not shown in Table 2. Also for 100 polyester the scores for chocolate were identical for all formulations.

I
.

12277~ a Example 8 The formulation a shown in Table 3 were prepared and tested using the procedure of Example 1.
The stain removal results were similar to that shown in Table 1.

¦ A I B I C I D I E

Water 70.1 1 70.1¦ 70.1l 70.1i 70.1 Tetrasodium ETA (40%)¦ 5.0 5.01 5.0 5.0 5.0 10 Citric Acid (50%) 0.9 1 0.9 ogle ogle ox Surfonic N-60 10 10 ¦ 10 10 1 10 Isobar K ¦141 12 12 1 12 1 12 Perchloroethylene 2 Ethylene Chloride I 1 1 2 15 D-Limonene 2 l,l,l-Trichloroethane i I

Claims (3)

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. A metastable laundry prespotting com-position comprising:
(a) from about 0.25 to 10% by weight of a chelating agent;
(b) from about 1 to 35% by weight of at least one nonionic surfactant wherein the surfactant has an HLB such that the combined HLB for all surfact-ants present is within the range of from 9 to 13;
(c) from about 5 to 60% by weight of a solvent; and (d) water wherein the composition has a pH of from 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, diethanol-amine, monoethanolamine, and mixtures thereof.
3. The composition of Claim 1, wherein the chelating agent is present in an amount of from 1.0 to 60.0% by weight.
4. The composition of Claim 1, wherein the chelating agent is present in an amount of from 1.5 to 4.0% 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, where the chelating agent is selected from the group consisting of:
ethylenediaminetetraacetic acid tetrasodium salt, ethylenediaminetetraacetic acid trisodium salt, ethylenediaminetetraacetic acid disodium salt, and mixtures thereof.
8. The composition of Claim 1, wherein the composition includes an effective amount of an acid suf-ficient to adjust the pH of the composition to within the range of 4.5 to 12.2.
9. The composition of Claim 1, wherein the composition has a pH within the range of from 6.5 to 8.5.
10. The composition of Claim 1, wherein the composition has a pH within the range of from 7.0 to 8Ø
11. The composition of Claim 1, wherein the HLB range is from 10 to 12.
12. The composition of Claim 1, wherein the HLB range is from 10.5 to 11.5.
13. The composition of Claim 1, wherein the nonionic surfactant is selected from the group con-sisting of ethoxylated nonylphenols, ethoxylated octylphenols, ethoxylated secondary fatty alcohols, ethoxylated primary fatty alcohols, ethoxylated sor-bitan fatty acid esters, sorbitan fatty acid esters and mixtures thereof.

14. The composition of Claim 1, wherein the surfactants are present in the amount of 5.0 to 20.0% by weight.
15. The composition of Claim 1, wherein the surfactants are present in the amount from 7.0 to 20.0% by weight.
16. The composition of Claim 1, wherein the solvent is present in an amount of from about 5 to 30% by weight.
17. The composition of Claim 1, wherein the solvent is present in an amount of from about 7 to 20% by weight.
18. The composition of Claim 1, wherein the solvent is an isoparaffinic hydrocarbon.
19. The composition of Claim 1, wherein the solvent is selected from the group consisting of iso-paraffinic hydrocarbons, deodorized kerosene, mineral spirits, terpenes, chlorinated hydrocarbons, and mix-tures thereof.
20. The composition of Claim 1, wherein the solvent is an isoparaffinic hydrocarbon mixed with less than 5% of a solvent selected from the group consisting of terpenes, chlorinated hydrocarbons, aromatics, ethers and mixtures thereof.
21. The composition of Claim 1, wherein the solvent is an isoparaffinic hydrocarbon mixed with less than 5% of a solvent selected from the group con-sisting of d-limonene, 1,1,1 trichloroethane, perchloro-ethylene and mixtures thereof.
22. The composition of Claim 1, wherein the nonionic surfactant is selected from the group con-sisting of ethoxylated nonylphenols, ethoxylated octylphenols, ethoxylated secondary fatty alcohols, ethoxylated primary fatty alcohols and mixtures there-of
3. A metastable laundry prespotting com-position comprising (a) from about 1.0 to 6.0% 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 sor-bitan 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;
(c) from about 5 to 30% by weight of a sol-vent selected from the group consisting of isoparaffinic hydrocarbons, deodorized kerosene, mineral spirits, terpenes, chlorinated hydrocarbons and mixtures thereof with the provision that the terpenes and chlor-inated hydrocarbons are present in an amount less than 5% by weight; and (d) water wherein the composition has a pH within the range of 6.5 to 8.5.
CA000465209A 1983-10-12 1984-10-11 Metastable prespotting composition Expired CA1227714A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/541,202 US4530781A (en) 1983-10-12 1983-10-12 Metastable prespotting composition
US541,202 1983-10-12

Publications (1)

Publication Number Publication Date
CA1227714A true CA1227714A (en) 1987-10-06

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CA000465209A Expired CA1227714A (en) 1983-10-12 1984-10-11 Metastable prespotting composition

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US (1) US4530781A (en)
EP (1) EP0137474A3 (en)
JP (1) JPS60101198A (en)
AU (1) AU572202B2 (en)
CA (1) CA1227714A (en)
NZ (1) NZ209861A (en)

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Also Published As

Publication number Publication date
AU3408084A (en) 1985-04-18
AU572202B2 (en) 1988-05-05
US4530781A (en) 1985-07-23
EP0137474A2 (en) 1985-04-17
JPS60101198A (en) 1985-06-05
EP0137474A3 (en) 1988-10-05
NZ209861A (en) 1987-03-06

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