JPS6368700A - Washing composition for removing oil contaminant - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application] The present invention is a clear, stable, microemulsified solution or gel suitable for treating heavily soiled areas of fabrics. Removal composition (pre-spottiJυ
Regarding. In particular, the present invention provides a single solution that is effective in removing oil stains and smudges from fabrics and has the characteristic of being "infinitely dilutable" (here in the sense of without phase separation) with water. Concerning phase detergents. Therefore, oil stains and stains can be removed by using a detergent that dissolves oil stains on normally soiled areas and then rinsing with water in a washing or rinsing tub. It is a clear, single phase condition without the problem of recontaminating the cleaned fabric.

[Prior Art and its Problems 1] Removal of oil stains and stains from fabrics has been a problem that has received much attention in laundry technology. Particularly uneven stains,
For example, there has been interest in laundry agents for pre-treating shirt collars and cuffs as a preliminary stain removal treatment prior to regular laundering. Publicly available detergent compositions used for pre-treatment include, for example, commercially available liquid detergents that are added to fabrics before placing them in the wash tub as stain removers, and oil stain removal agents that contain one or more organic solvents. There are a variety of special chemicals for this purpose. Methods using liquid detergents have been shown to be effective in cleaning a wide range of stains; however,
In particular, removal of oil stains is often a problem unless the liquid composition contains a particularly suitable solvent for dissolving the oil, such as an organic solvent. On the other hand, known compositions specifically designed for removing oil stains are either impractical to use or
Alternatively, the problem of re-contamination of the fabric with oil stains in the washing tub or rinsing tub is unavoidable.

Recontamination of oil stains is due to phase separation of detergents that occurs when detergents containing organic solvents are "infinitely" or highly diluted with water in the wash tub. In fact, when a phase separation occurs due to dilution of the detergent, the organic solvent itself, along with the dissolved oil stains, becomes a stain to be removed from the fabric.

In this regard, "
The term "infinitely dilutable" means that a detergent is chemically formulated to be a clear single phase with no phase separation when diluted with a minimum of 1 part composition to 100 parts water. This degree of dilution is important because it corresponds approximately to the degree of dilution that occurs when the detergent is actually added to a fabric rinsed with water, and is approximately 100 to 1000 times more diluted.

Mitschel et al., US Pat. No. 4,180,472, describes a detergent for the removal of oil stains that requires multiple steps. This composition consists of a solvent such as an alkane combined with a special surfactant as an emulsifier and cannot be applied directly to soiled fabrics, but rather is added to the laundry tub. After the oil is dissolved from the soiled fabric, the solvent must be removed in a second step using certain surfactants as solvent removal reagents. Single phase compositions are not contemplated or described.

US Pat. Nos. 4,093,418 and 4,178,262 to Compton et al. describe laundry detergent compositions that include a nonionic surfactant solution and an isoparaffinic solvent. British Patent Publication No. 1,518
, No. 786 (published July 19, 1978) describes a cleaning composition comprising a nonionic surfactant, an organic acid solvent such as methyl laurate, and water.

The proportion of organic solvent in this acid combination is strictly limited, but according to the specification, the solvent "tends to act as a burden on the normal cleaning of the composition." This indicates that the solvent does not remain in the solution in the washing tub, but separates and acts as a stain. In example 2 of GB 1.518.786, the amount of organic solvent in the composition is 3.4%. Furthermore, this composition in granular form is not advantageously used as a detergent on soiled fabrics, but is, for example, added directly to the washing tub.

There is therefore still a need in the field of laundry technology to provide better compositions for the removal of oil stains, which can be used as detergents directly on soiled fabrics and which can be removed satisfactorily by rinsing with water. There is.

[Summary of the Invention] This invention consists of the following amounts of components by weight:
In a clear, single phase, microemulsion solution or gel laundry detergent composition: (a) consisting of one or more alkanes of 10 to 18 carbon atoms;
(b) about 10 to 70% organic solvent;
one or more containing from to 7 moles of condensate,
about 4 to 60% nonionic surfactant; and (c) an amine oxide or alkylphenol ethoxylate, such that the total amount of nonionic surfactant in the detergent does not exceed 60% by weight. 50% of an auxiliary nonionic surfactant; (d) about 0 to 20% of a subsurfactant consisting of a primary or secondary aliphatic alcohol of 10 to 18 carbon atoms; 10% polar secondary organic solvent and (f) about 1 to 80% water, the proportions of each component of the composition forming a clear, single phase detergent, which Adding water to the composition at a minimum ratio of 1 part detergent to 100 parts water dilutes the composition to an overall clear single phase, resulting in coexisting phase separation (concomi3amt phasing).
(g) The remainder provides a laundry detergent optionally containing small amounts of adjuvants.

In accordance with the process of the present invention, the removal of oil stains and/or stains from fabrics with detergents involves contacting the stained fabric, usually the oil-stained area, directly with an effective amount of said liquid or gel detergent. This treatment is followed by regular cleaning.
Alternatively, if desired, the treated fabric can be simply rinsed with a liquid, preferably water, to remove detergent that has been in contact with the dissolved oil.

In addition to their effectiveness as laundry and detergents, the compositions of the present invention are particularly effective in removing greasy or greasy stains from hard surfaces such as shiny plastic, glass, and metal surfaces. be. Greasy and greasy soils on such hard surfaces are well dissolved in the microemulsion solution or gel according to the invention, making the composition of the invention a clear, single-phase composition for all cleaning purposes. It can be effectively used as an object.

This detergent consists of three basic elements: an organic solvent;
Depending on the relative proportions of surfactant and water, liquid solutions,
They can be expressed as microemulsions (either water-in-oil or oil-in-water) or gels. The compositions of the invention, in each particular form, are clear at room temperature, thermodynamically stable, and single-phase. Therefore, emulsified compositions or mixtures that are not single-phase, not clear and thermodynamically stable at room temperature, unless they are emulsified, are not compositions according to the invention.

As used herein, the term "microemulsion" refers to a composition that includes two immiscible liquid phases: a dispersed phase (eg, micelles) and a continuous phase. The radius of the individual droplets of the dispersed phase of the microemulsion is usually less than about 1000, usually about 50 to 1000. In liquid form, the average radius in the dispersed or discontinuous phase is usually less than 40 mm. If the average radius in the dispersed phase is greater than about 1000, it is not a microemulsion, but an emulsion that is usually turbid and thermodynamically unstable. Measurement of the average radius of the dispersed phase can be performed using conventional light scattering techniques.

The present invention provides that a detergent containing one or more organic solvents in a reservoir for removing oil stains efficiently uses the detergent on soiled fabrics to effectively remove soils without the problem of oil recontamination. It is based on the discovery that the chemical formula can be formulated to meet two important requirements for removal. Two requirements are: (1) the detergent must be a clear, single-phase composition so that oil stains on fabrics are quickly dissolved by the detergent; and (2) the detergent must be of a clear, single-phase composition. Rinsing with water provides sufficient removal from washed fabrics without phase separation in the diluted detergent. The second requirement concerns the characteristic of the composition that it is infinitely dilutable with water. More specifically, a detergent is considered to be infinitely dilutable if it can be diluted at least 100 times with water, resulting in a completely clear, single phase dissolved composition. The basic feature of the detergent of the invention is therefore that, whether the composition is in the form of a solution, emulsion or gel, infinitely diluted compositions made from this composition are likewise completely free. It is clear and has a single phase.

Although the applicant of the present invention is not responsible for any particular theory of operation, it is believed that the dissolved detergents of the present invention are in the form of water-in-oil microemulsions when infinitely diluted.

In such a microemulsion, the oil (eg, organic solvent) is a dispersed phase and is suspended in water, which is a continuous phase, so that the organic solvent and dissolved oil do not come into contact with the treated fabric.

Thus, by rinsing the treated fabric with water, the detergent can be sufficiently removed from the fabric without the problems of phase separation and recontamination of oil stains.

Therefore, the formulation of an infinitely dilute oil-in-water emulsion is a feature of the detergents of the present invention.Whether a particular detergent is infinitely diluted according to the following test is sufficient to determine for the purposes of the present invention. be done. Add 100 parts or more of water to 1 part detergent and stir both the water and the composition at room temperature. The diluted mixture is allowed to stand for at least 1 hour and then observed for phase separation. If there is no phase separation from the boundary between clear phases or from the appearance of cloudiness or transparency,
It is believed that the composition can be diluted indefinitely.

[Example] The detergent of the present invention basically consists of three components: an organic solvent, a nonionic surfactant, and water. In addition to these components, if desired, co-solvents, co-surfactants, auxiliary non-ionic surfactants and adjuvants defined below may be added.

The specific ingredients used and their proportions in the composition are determined so that the composition is clear, single phase, microemulsion (oil-in-ice or water-in-oil), solution (water-in-oil, water-in-oil, (i.e. oil is the continuous phase) or on the basis of the formation of a gel and the composition having the further characteristic that it is infinitely soluble in water. Since whether a composition is infinitely soluble in water is determined according to the above test, formulating a composition with this characteristic is well accomplished by simple trial and error techniques.

The amount of organic solvent in the composition can vary widely, from 10 to 70%, but preferably about 60 to 80%, and most preferably about 45 to 50% of the total weight of the composition. The organic solvent may be one or more straight-chain or side-chain alkanes having 10 to 18 carbon atoms. Normal dodecane is preferred as a solvent for the compositions of the present invention, with n-decane, n-tridecane and n-hexadecane being particularly effective.

Up to about 10% by weight of a polar secondary organic solvent may be added to the compositions of the present invention. Effective polar secondary organic solvents include low molecular weight alcohols such as impropatol and hexanol, benzyl alcohol,
T M Exxates
Oxoalcohol esters such as (sold by Exxon), butylcarpitol (sold by Union Carbide Corporation),
n Cxrbids Corporation), ketones such as penzophenone, dialkyl phthalate esters such as diglyme, dibutyl phthalate, esters of monohydric alcohols and fatty acids,
There are esters of glycol and fatty acids, esters of glycerol and fatty acids, and esters of polyglycols and fatty acids.

Preferably, the nonionic surfactant comprises a primary alcohol ethoxylate or a secondary alcohol ethoxylate, or a mixture thereof. -grade alcohol ethoxylate can be represented by the following general formula, R-0-(cH,-CH2-0)n-HR has 9 carbon atoms
It represents from 1 to 16 alkyl groups, and the number n of ethkylate groups is from 1 to 7. Commercially available nonionic surfactants of this type are known under the trade name Neodol.
ol) as Shell Chemical Corporation (S
hell Cbe+aiexl Corporation)
Union Carbide Corporation (Unio Carbide Corporation), also under the trade name Tergi of
n C5rbide Corporation). Particularly desirable for use here include:
Tergijol 24-L-5,
Neodel 91-6, Neodel
For example, Neodol 45-1 is C14-Cl3 condensed with 1 mole of ethylene oxide per 1 mole of alcohol.
alcohol.

The secondary alcohol ethoxylate has the following general formula % formula % x + Y is 6 to 13, the number n of ethoxylate groups
is from 1 to 7. Commercially available surfactants of this type include the trade name TergiLol Varnish series (TergiLol S), and are commercially available from Union Carbide Corporation (Union Carbide C).
organization).

The HLB (hydrophilic-lipophilic balance) of the nonionic surfactant or mixture of surfactants useful in the compositions of the present invention is about 9 to 13, preferably about 9 to 11, and more preferably about 9. 5 to 10.5 is most desirable. Generally the H of the surfactant or mixture of surfactants within the composition.
When LB is 12 or more, ingbanol and exanol ali are replaced by butyl carpitol (Butyl C1r).
An oil-soluble fatty alcohol co-surfactant (eg C14/C15 alcohol), such as biLol), or a polar co-organic solvent that is miscible with water and oil is required in the composition.

Under appropriate circumstances, other nonionic surfactants may be added as partial substitutes or supplements to the alcohol nidoxylate surfactants described above. This one
Cosurfactants essentially consist of two types of nonionic surfactants: amine oxides and alkylphenol ethoxylates.

An effective amine oxide is represented by the following general formula, R,7
N→O R1 is an alkyl group having 12 to 18 carbon atoms, and R
2 and R1 are methyl, ethyl or hydroquinethyl groups. Commercially available surfactants of this type include, for example, AroIIlox DMMC-W, sold by Armxk under the tradename Aromox surfactants. .

The alkylphenol ethoxylates used in the compositions of the present invention include condensates of alkylphenols with ethylene oxide containing straight-chain or side-chain alkyl groups having 8 to 10 carbon atoms, the amount of ethylene oxide being 1 4 to 15 moles per mole. Commercially available nonionic surfactants of this type include Tergitol NP (sold by Union Carbide Corporation).
Terlitol NP surfactant and G AF Corporation
Igepal sold by
) There is a surfactant. Particularly effective is Ruikehal C0-63, which is made of 09 alkylphenol ethoxylate containing 9 moles of ethylene oxide per mole of phenol.
It is 0.

Typically, auxiliary nonionic surfactants may also be used effectively depending on product economics, surfactant effectiveness, or to adjust the HLB of the nonionic surfactant mixture to a desired value.

The total amount of nonionic surfactant in the composition is about 8 to 60%, preferably 15 to 50%, and most preferably 30 to 50% by weight of the composition. −
The proportion of primary or secondary alcohol ethquinate ranges from about 4 to 60% of the composition. Therefore, if the level of alcohol ethoxylate in the composition is less than about 8% by weight, the supplemental nonionic surfactant usually must be added at the same time.

The ratio of auxiliary nonionic surfactant to alcohol ethoxylate may be up to 5:1, but it is approximately 0.5:1.
A ratio of 1 to 3:1 is desirable.

Secondary surfactants may be selectively used in detergents up to about 20% by weight to lower the HLB value of the nonionic surfactant or mixture thereof to a desired value. The subsurfactant is preferably a primary or secondary aliphatic alcohol having 10 to 18 carbon atoms. Commercially available alcohol of this type has the trade name Neodol.
) sold by Shell Chemical Company. Neodol 45, a C14-Cl3 alcohol, is particularly effective as a co-surfactant in the present invention.

The amount of water in the detergent ranges from 1 to 80% by weight, depending on what form of composition is desired. When water is at a level of about 1 to 15% of the composition, a water-in-oil microemulsion or water-in-oil solution is generally produced. The amount of water is approximately 25 to 50% by weight
%, a gel is generally formed, usually a liquid crystalline or isotropic microemulsion gel. When the amount of water is about 50% or higher of the total composition, oil-in-ice microemulsions are generally produced. If the amount of water is between about 15 and 25%, the composition is typically in the range of a non-single phase water-solvent surfactant mixture and is therefore not within the scope of this invention.

Various adjuvants may be added to the detergents, such as optical brighteners, bleaches, enzymes, fragrances and colorants. Commonly used perfumes include basic oils, esters, aldehydes and/or alcohols, all of which are known in the perfume art.

Coloring agents include various types of dyes and water-soluble pigments. The bleaching agent is preferably 0 to 3% hydrogen peroxide by weight. The enzyme is preferably protease, amylase, or a mixture thereof. Also additives (builders) such as sodium sesquicarbonate, anti-redeposition agents such as sodium carboxyl methylcellulose, dispersion aids such as sodium polyacrylate, bactericides, fungicides, defoamers such as silicone, Antifouling agents such as copolyesters, preservatives such as formalin, and foam stabilizers may also be added.

the individual proportions of said adjuvants are less than 3% by weight;
It is often less than 1%, except for builders, where the percentage is sometimes around 5% or more. The total proportion of adjuvants usually does not exceed 10% of the composition by weight and is preferably less than 5%. It is of course understood that the adjuvants used should be selected in such a way that they do not interfere with the basic properties of the composition, nor do they interfere with the removal of oil stains by the composition. Dew.

The detergent of the present invention is prepared by simply mixing the ingredients, and the amount of vibration and the order in which the ingredients are added are not critical factors. However, to reduce the mixing time and energy required for production, it is desirable to add them in the following order:

To form a water-in-oil solution, water-in-oil microemulsion, or gel, the organic solvent and surfactant are mixed before water is added. If two or more surfactants are used, the more oil-soluble (i.e., hydrophobic) surfactant is mixed with the solvent, then the more water-soluble (i.e., hydrophilic) surfactant is added. Then add water to this mixture.

To form an oil-in-water microemulsion, the order of addition is reversed. Therefore, first the surfactant or mixture of surfactants is added to the water and then the organic solvent is added. If a polar secondary organic solvent is used, it must be mixed with the organic solvent before being added to the water/surfactant mixture. If two or more surfactants are used, the more hydrophilic surfactant is added to the water first, followed by the more hydrophobic surfactant. If a water-soluble adjuvant is used, the adjuvant components are first dissolved in water before the other ingredients are added.

Example 1 As an example of a detergent of the present invention, compositions No. 21 were prepared according to the method described above. The specific form of the composition is indicated for each composition.

Weight% 1- n-dodecane 42.0 Alcohol (c9-C1l) 42.0 Ethoxylate (EQ
6) (Neodo19+-6) Alcohol (c14-C15) 11.2 Ethoxylate (EOl) (N 5odo14s -1
) (a) The names in parentheses are trade names of alcohol ethoxylates used in compositions sold by Shell Chemical Company. For example, N eodo19
1-6 is an ethoxylate alcohol containing 6 moles of ethylene oxide per mole of alcohol having 9 to 11 carbon atoms.

2- n-dodecane 30.0% alcohol (c9-C1l) 30 ethoxylate (
EOS) 3-n-hexadecane 15.4% alcohol (c9-C11) 9.5 ethoxylate) (EO
6) Alcohol (c14-C15) 4.8 ethoxylate (EOI) 4- n-dodecane 35.3 alcohol (c9-C1l) 37.9 ethoxylate (EO
6)) Alcohol (c9-CLI) 4.3 Ethoxyle)
(EO2,2S) Benzyl alcohol 6.9 5- n-dodecane 15 Secondary alcohol (c15L 15.0 Ethoquinlate (E O7)
(TtrgiLolIs-S-7) Alcohol (c14-C15) 2.0 Ethoxylate (Eol) Benzyl Alcohol 3.06- n-Dodecane 10. 〇Secondary alcohol (c15
) 10.0 Ethoxylate (EO5) Alcohol (c14-C15) 2.0 Ethoxylate (EO3) Benzyl Alcohol 3,0 7- n-Dodecane 24.0% Butyl Calpitol 6.0 (Union Carbide TM) Alcohol (
ct4-Cts) 8. .

Ethoxyle) (EO2,25) Cocoamine dimethyl oxide 10.08- PEG
400 day stearate 5.6% n-dodecane
22.2 alcohol (c14-C1
5) 7.4 Ethoxyle-1-(EO125) Cocoamine dimethyl oxide 7.4 Butylcarpitol 7.49- n-dodecane
48.0% alkyl (c9) phenol 3
0.0 Ethoxylate (EO9) (Igeps
l CO alcohol (c14-C15) 21.0
Ethoxyle-1-(EO2,2S) Water 1
．． 0 shape: Water-in-oil type solution 100.010-
n-Dodecane 10.0% alkyl (c
9) Phenol 5.0 ethoxylate (EO9) Alcohol (c14-C15) 5.0 ethoxylate (EO2,25) Butyl carpitol 5.711- n-dodecane 54.0% alkyl (c9) phenol 30.0 ethoxy Rate (EO9) Alcohol (c14-C15) 14.0 Ethoxylate (E O!, H) 12- n-Dodecane 17.0% Alcohol (c9-C1l) 9.7 Ethoxylate (
EO6) Alcohol (c14-C15) 4.5 ethoxylate (EOl) 13-n-tridecane 15.4% alcohol (c9-C1l) 9.5 ethoxylate (EOl)
6) Alcohol (c14-C15) 4.8 ethoxylate (EOI) 14- n-hexadecane 48.0% alcohol (c9-C1l) 31.8 ethoxylate (E
O6) Alcohol (c14-C15) 16.9 Ethoxylate (EOI) Water 3.3
15- n-dodecane 35.1 Alcohol (c9-C1l) 51.3 Ethoxylate (
EO6) Alcohol (c14-C15) 9.116- n-
Dodecane 14.8% Oxohexylacetate o, 2 Aryl (c9-C11) 22.0 Ethoxylate (EO6) Alcohol (c14-C15) 3.017- n-
Dodecane 30.0% Al: I-L (c12
-C14) 20.0 ethoxylate (EO5) 18- n-dodecane 25.0 alcohol (c9-C1l) 37゜3 ethoxylate (E
O6) Alcohol (c14-C15) 5.1 (Neode
1 oxyhexyl acetate 0.419- 〇-
Decane 40.9% alcohol (c9-C
1l) 23.6 Ethoxylate (EO6) Alcohol (c14-C15) 11.0 Ethoxylate (EOI) Water 24.
5 shape Nigel 100.020-n
-Dodecane 10.0% alcohol (c1
2-C14) 10.0 ethoxylate (EO5) 21- n-dodecane 45.0 alcohol (c12-C14) 45.0 ethoxylate) (
EO5) Example 2 Compositions 22 to 24 shown below are all clear,
Although it was a single phase solution, it is not infinitely soluble in the sense of I defined herein and is therefore not in accordance with the present invention.

Weight% 22- n-dodecane 58.8% Alcohol (c12-C14) 39.2 Ethoxylate (
EO5) 23-n-tridecane 50.0% (Nor
pxr H) Alcohol (c9-C1l) 22.2 Ethoxylate (EO6) Alcohol (c14-C15) 17.8 Ethoxylate (EO2,25) 24-n-Tridecane 40.0% Alcohol (c9-C1l) 27. 8ethoxyle-1=
(EO6) Alcohol (c9-C1l) 22.2 Ethoxylate (EOI) Water 10.
Example 3 Composition 25 shown below is similar to compositions 23 and 24, but differs in that it is infinitely soluble and is therefore important in accordance with the invention. It is.

25- n-tridecane 45.0% alcohol (c9-C1l) 25.0 ethoxylate (
EO6) Alcohol (c14-C15) 20.0 Ethoxylate (EO2,25) Example 4 The following steps compare the effectiveness of detergents according to the invention with the performance of commercially available liquid compositions intended for the removal of oil stains. This was done for comparison and evaluation.

The soiled swatch used for washing is 3 inches by 4 inches;
It consists of the following samples.

1- Dacron double overcast knit (DMO) with dirty motor oil 2- Dacron double overcast knit (BBQ) with barbecue sauce 3- Tightly woven cotton fabric (EMPA) with carbon black in olive 4- Artificial Sebum/@65% Dacron with particles/3
The initial reflexance reading (initial Rd) of a 5% cotton blend fabric (SEBUM) soiled swatch was recorded. A copy of each specimen was used for testing. Each swatch was treated with 0.2 g of a particular detergent liquid and then allowed to soak in this liquid for 4 minutes.

The treated swatches were placed in the container of the tergotometer, while each bucket in this container contained a copy of the soiled swatch to be tested for a particular detergent (there were a total of eight soiled swatches). Each bucket of the tergotometer contains 1 liter of water in which 1.3 g of a commercial powder detergent composition is dissolved, and the water has an artificial calcium carbonate hardness of 150 ppm. After the treated soiled swatches are soaked in water, the swatches are washed at 100'F for 12 minutes without shaking at loorpm.

Next, the cleaning solution was discarded, and the artificial hardness was 150 ppm, 10
One liter of water at 0'F was added. And the sample is 1
Rinsed at 100 rpm for 5 minutes, rinse water removed and air dried. The reflexance reading (final Rd) of each cleaned swatch was recorded.

The dirt removal rate (%SR) is determined by the following formula.

Oil-in-ice microemulsion (composition A) and water-in-oil solution (composition A)
The composition of the invention, composition B), is represented as follows.

Composition A Weight % n-dodecane 15% alcohol (
c9-C1l) 15 Nidoxylate (EO6) Alcohol (cI4-C15) 4 Ethoxylate (EOI) Composition B Weight % n-Dodecane 44.0% Alcohol (c9-C1l) 44.0 Ethoxylate (
EO6) Alco-Jl, (c14-C15) 11.0 Etkylate (EOI) Compositions A and B were evaluated for stain removal according to the above process as were the four commercially available compositions. The four compositions are: a detergent; a liquid laundry detergent composition: a pine oil-based liquid cleaner containing about 30% pine oil; and a liquid laundry detergent composition containing about 30% pine oil;
A petroleum-based all-purpose cleaner containing 0% petroleum distillates. The results of the stain removal test are shown by the %SR achieved by each composition as shown below. Comparing two fabrics from the side, you can see that the difference in SR unit is at least 5%.
This is considered to be the case in some cases.

%SR Detergent DMf) BBQ
EMPA SEB [1M composition acid (oil-in-water microemulsion) 8,2 55.9 3G, + 73. i
Composition B (water-in-oil solution) 42.2 57.5
5G, 2 6g, 1 detergent
74 39.6 49.0 63.5 Liquid washing detergent 5.1 49.7 37.6 72
．． 3 Pine oil based cleaner 9.8 63.
6 55.3 66.5 Petroleum based cleaner
15.9 61j As shown in Table S2.9.67.1, the detergent of the present invention in solution form (composition B) has significantly better performance than all commercially available detergents and cleaning compositions. is excellent. This is most obvious with respect to the removal of DMO stains. The oil-in-water microemulsion composition (composition A) is basically equivalent in performance to commercially available detergents and liquid detergents, but overall is slightly inferior to pine oil-based cleaners and petroleum-based cleaners. Inferior. However, petroleum-based cleaners are susceptible to organic solvent recontamination problems, especially at high temperatures above 100'F.

Example 5 The steps of Example 4 were carried out to evaluate composition C1, a water-in-oil solution according to the invention, in comparison to commercially available liquid detergents and liquid laundry detergents.

114'F water from the tap was used instead of 100 cF water with a hardness of 150 ppm. The soils tested were DMOLBBQ, described above, and EMPA.

Composition C consists of the following ingredients.

Composition C Weight % n-dodecane 48.2% oxohexyl alcohol 0.8 alcohol (c9-C
1l) 34.2 Ethoxylate (EO6) Alcohol (c14-C15) 14.8 Ethoxylate (EOI) Shape Two water-in-oil solution 100.0 The results of the cleaning test are as follows.

%SR Detergent DMOBBQ EMPA Composition C
Acid 3G, + 66.1 42.1 Commercial detergent 6.4 41.5 315 Liquid detergent 3.2 47. Q35.6 As shown in the table above, Composition C was significantly superior as a detergent compared to the commercially available compositions.

1□-1 Procedures Amendment Document December 2, 1988 Patent H No. H220073 of 1988 2 Name of the invention Laundry composition for removing oil stains 3 Relationship with the case of the person making the amendment Patent Applicant Address Name Full Date Vermolive Company 4, Agent (Attachment) 1. The scope of the claims is amended as follows.

(1) In a clear, single phase, L-emulsion liquid, solution, or gel laundry prestain removal composition comprising the following amounts by weight of the components: (a) the carbon atoms are (b) per mole of a primary or secondary aliphatic alcohol having 9 to 16 carbon atoms, consisting of one or more alkanes having 10 to 18 atoms and about 10 to 70% organic solvent; one or more nonionic surfactants comprising 1 to 7 moles of ethylene oxide condensate; (c) an amine oxide or an alkylphenol ethoxylate; from about O to 50% of an auxiliary nonionic surfactant, such that the total amount of the agent does not exceed 60% by weight; and (d) from a primary or secondary aliphatic alcohol having from 10 to 18 carbon atoms. (e) about O to 10% polar co-organic solvent; and (f) about 1 to 80% water, each component of the composition comprising: The proportions form a clear, single-phase composition, which is generally cleared by adding water to the composition at a ratio of 1 part composition to 100 parts water. A laundry composition which is diluted into a single phase and which can be diluted with water indefinitely without coexisting phase separation, (g) the remainder optionally containing small amounts of adjuvants.

2. The composition of claim 1, wherein the amount of water is about 1 to 15% of the amount of the composition.

(3) The composition according to claim 1qi, wherein the organic solvent is n-dodecane.

(4) The nonionic surfactant is a condensation product of a primary alcohol having 12 to 14 carbon atoms and containing 5 moles of ethylene oxide per 1 mole of the alcohol, and the composition is substantially free of the Fuji subsurfactant. A composition according to claim 1, characterized in that it is free of.

(5) The composition according to claim 1, wherein the nonionic surfactant or the mixture of surfactants in the composition has an HLB value of about 9 to 11.

(6) A composition according to claim 1, characterized in that it contains an auxiliary nonionic surfactant consisting of an alkylphenol ethoxylate.

(7) The composition according to claim 1, characterized in that it contains an auxiliary nonionic surfactant consisting of an amine oxide.

(8) about 45% by weight of tridecane, the alcohol having about 9 to 11 carbon atoms, about 29.
2% primary alcohol ethoxylate, about 15.8% primary alcohol ethoxylate in which the alcohol has about 14 to 15 carbon atoms and is condensed with 2.25 moles of ethylene oxide per mole of real alcohol; 1
A composition according to claim 1, consisting of 0% water and in the form of a water-in-oil solution.

(9) In a method for cleaning and washing oil-stained and/or stained fabrics: 1. A clear, single-phase, L-emulsion liquid, solution or gel consisting of the following components by weight: contacting the soiled fabric with an effective amount of a laundry composition; (b) about 4 to 60% of one or more condensates containing 1 to 7 mol of ethylene oxide per mol of primary or secondary aliphatic alcohol with 9 to 16 carbon atoms; and (c) an amine oxide or an alkylphenol ethoxylate, such that the total amount of nonionic surfactant in the prestain removal composition does not exceed 60% by weight. (d) about O to 20% cosurfactant consisting of a primary or secondary aliphatic alcohol of 10 to 18 carbon atoms; (e) about 0 to 10%; (f) about 1 to 80% water, the proportions of each component of the composition forming a clear, single-phase composition; By adding water to the composition in a ratio of 1 part to 100 parts of the composition, the composition is diluted to a wholly clear single phase and can be diluted with water indefinitely without coexisting phase separation. (g) a laundry composition, the remainder optionally comprising small amounts of adjuvants; 2. rinsing the fabric treated in step I with an aqueous liquid to remove said composition from said fabric, thereby washing the fabric; restoring a fabric substantially free of said oil stains and/or stains.

10. The method of claim 9, wherein the composition comprises about 1 to 15% water by weight.

(11) The method according to claim 9, wherein the organic solvent in the composition is n-dodecane.

(12) The nonionic surfactant in the composition is a condensation product of a primary alcohol having 12 to 14 carbon atoms and 5 moles of ethylene oxide per mole of the real alcohol; 10. The method according to claim 9, wherein said subsurfactant is not present in said subsurfactant.

(13) The method of claim 9, wherein the nonionic surfactant or mixture of surfactants in the composition has an HLB value of about 9 to 11.

14. The method of claim 9, wherein said composition includes a nonionic cosurfactant comprising an alkylphenol ethoxylate.

(15) The method of claim 9, wherein the composition comprises a nonionic cosurfactant comprising an amine oxide.

(Step 6) The composition is condensed with about 45% by weight of tridecane, an alcohol having about 9 to 11 carbon atoms, and 6 moles of ethylene oxide per mole of the real alcohol. 2% primary alcohol ethoxylate, about 15.8% alcohol ethoxylate in which the alcohol has about 14 to 15 carbon atoms and is condensed with 2.25 moles of ethylene oxide per mole of real alcohol, and about 10 % of water and is in the state of a wood-in-oil solution.''

Claims (16)

[Claims] (1) In a clear, single phase, microemulsion liquid, solution, or gel laundry prestain removal composition comprising the following amounts by weight of the components: (a) 10 carbon atoms; (b) ethylene oxide per mole of a primary or secondary aliphatic alcohol having 9 to 16 carbon atoms; (c) about 4 to 60% nonionic surfactant containing 1 to 7 moles of condensate; (c) amine oxide or alkylphenol ethoxylate; from about 0 to 50% of an auxiliary nonionic surfactant, such that the total amount of the agent does not exceed 60% by weight; and (d) from a primary or secondary aliphatic alcohol having from 10 to 18 carbon atoms. (e) about 0 to 10% polar co-organic solvent; and (f) about 1 to 80% water, each component of the composition comprising: The proportions form a clear, single-phase composition, which is generally cleared by adding water to the composition at a ratio of 1 part composition to 100 parts water. A laundry composition which is diluted into a single phase and which can be diluted with water indefinitely without coexisting phase separation, (g) the remainder optionally containing small amounts of adjuvants. 2. The composition of claim 1, wherein the amount of water is about 1 to 15% of the amount of the composition. (3) The composition according to claim 1, wherein the organic solvent is n-dodecane. (4) The nonionic surfactant is a condensation product of a primary alcohol having 12 to 14 carbon atoms and 5 moles of ethylene oxide per mole of the alcohol, and the composition is such that the subsurfactant is substantially Composition according to claim 1, characterized in that it is absent. (5) The composition according to claim 1, wherein the nonionic surfactant or the mixture of surfactants in the composition has an HLB value of about 9 to 11. 6. The composition of claim 1, further comprising an auxiliary nonionic surfactant consisting of an alkylphenol ethoxylate. (7) The composition according to claim 1, characterized in that it contains an auxiliary nonionic surfactant consisting of an amine oxide. (8) about 45% by weight of tridecane, the alcohol having about 9 to 11 carbon atoms, about 29.
2% primary alcohol ethoxylate, about 15.8% primary alcohol ethoxylate in which the alcohol has about 14 to 15 carbon atoms and is condensed with 2.25 moles of ethylene oxide per mole of alcohol, and about 1
A composition according to claim 1, consisting of 0% water and in the form of a water-in-oil solution. (9) In a method for soaking and laundering oil-stained and/or stained fabrics, 1. A clear, single-phase microemulsion liquid, solution or gel consisting of the following components by weight: contacting the soiled fabric with an effective amount of a laundry composition; , (b) 1 mole of primary or secondary aliphatic alcohol with 9 to 16 carbon atoms: 1 ethyleneoxide
one or more containing from to 7 moles of condensate,
about 4 to 60% nonionic surfactant; and (c) an amine oxide or alkyl phenol ethoxylate, such that the total amount of nonionic surfactant in the prestain removal composition does not exceed 60% by weight. (d) about 0 to 20% of a subsurfactant consisting of a primary or secondary aliphatic alcohol having 10 to 18 carbon atoms; e) about 0 to 10% polar secondary organic solvent; and (f) about 1 to 80% water, the proportions of each component of the composition forming a clear, single-phase composition. However, by adding water to the composition at a ratio of 1 part of the composition to 100 parts of water, the composition can be diluted into a clear single phase as a whole without causing coexisting phase separation. (g) Laundry compositions which are infinitely dilutable with water, and (g) the remainder optionally containing small amounts of adjuvants. 2. rinsing the fabric treated in step 1 with an aqueous liquid to remove the composition from the fabric, thereby restoring the laundered fabric substantially free of the oil stains and/or stains; A method comprising the step of: 10. The method of claim 9, wherein the composition comprises about 1 to 15% water by weight. (11) The method according to claim 9, wherein the organic solvent in the composition is n-dodecane. (12) The nonionic surfactant in the composition is a condensation product of a primary alcohol having 12 to 14 carbon atoms and 5 moles of ethylene oxide per mole of the real alcohol; 10. The method according to claim 9, wherein said subsurfactant is not present in said subsurfactant. (13) The method of claim 9, wherein the nonionic surfactant or mixture of surfactants in the composition has an HLB value of about 9 to 11. 14. The method of claim 9, wherein said composition includes a nonionic cosurfactant comprising an alkylphenol ethoxylate. (15) The method of claim 9, wherein the composition comprises a nonionic cosurfactant comprising an amine oxide. (16) The composition comprises about 45% by weight of tridecane, about 29.2% of primary alcohol having about 9 to 11 carbon atoms and condensed with 6 moles of ethylene oxide per mole of alcohol. Alcohol ethoxylate, consisting of about 15.8% alcohol ethoxylate in which the alcohol has about 14 to 15 carbon atoms and is condensed with 2.25 moles of ethylene oxide per mole of alcohol, and about 10% water. , in the form of a water-in-oil solution.