JP2020186378A - Stable anti-mite liquid laundry detergent composition containing benzyl benzoate - Google Patents

Abstract

To provide a stable liquid laundry detergent composition containing benzyl benzoate in an amount sufficient to provide an anti-mite effect.SOLUTION: An anti-mite liquid laundry detergent composition comprising 1-20 wt.% of benzyl benzoate and 0.03-1 wt.% of a non-polymer crystalline hydroxyl-containing structuring agent, based on the total weight of the liquid detergent composition. Benzyl benzoate is contained preferably in an amount of 2-15 wt.%, more preferably 3-10 wt.%, and the non-polymer crystalline hydroxyl-containing structuring agent is preferably hardened castor oil.SELECTED DRAWING: None

Description

The present invention relates to a liquid laundry detergent composition, preferably a stable liquid laundry detergent composition containing a sufficient amount of benzyl benzoate to provide an anti-tick effect.

Dust mites can be one of the most common indoor allergens. Dust mites may be involved in 50 to 80 percent of all asthma cases, as well as innumerable cases of eczema, hay fever, and other allergic reactions. Dust mites can sneak into fabrics, primarily carpets, household upholstery materials, mattresses, bedding, and sometimes clothing, and not cling to them.

Correspondingly, it is desirable to provide a fabric treatment composition having an anti-tick effect. Benzoic acid esters such as benzyl benzoate are known as effective acaricides. However, since benzyl benzoate is insoluble in water, it is difficult to incorporate it into liquid fabric treatment compositions, especially aqueous detergent compositions.

On the other hand, benzyl benzoate, when used in relatively small amounts (eg less than 1%), can emulsify to form relatively small droplets that can be stably dispersed in the aqueous detergent composition. it can. However, such small amounts of benzyl benzoate may not be sufficient to deliver the desired anti-tick effect. On the other hand, when used in higher amounts (eg, 1% or more) to support the desired anti-tick effect, benzyl benzoate may coagulate to form larger droplets, which later Causes phase separation of aqueous detergent compositions over time and / or under stress conditions.

Therefore, liquid detergent compositions containing a sufficient amount of benzyl benzoate to deliver the desired anti-tick effect, which is phase stable over time and / or under stress conditions, especially aqueous laundry detergent compositions. It is needed to provide.

The present invention is a liquid detergent composition, preferably an aqueous laundry detergent composition.
(A) Benzyl benzoate of about 1% to about 10%, preferably about 2% to about 8%, preferably about 3% to about 6% of the total weight of the composition.
(B) About 0.03% to about 1%, preferably about 0.04% to about 0.8%, more preferably about 0.1% to about 0.5% of the total weight of the composition. Polymer crystalline hydroxyl-containing structuring agent and
To provide a composition comprising.

Preferably, the non-polymer crystalline hydroxyl-containing structuring agent is hardened castor oil. More preferably, the non-polymeric crystalline hydroxyl-containing structuring agent exists as a crystal having a non-spherical elongated crystal habit with an aspect ratio of at least about 5: 1 and a needle radius of at least about 20 nanometers.

In a preferred but not essential embodiment of the invention, the non-polymeric crystalline hydroxyl-containing structuring agent is provided in a structured premix further comprising an anionic surfactant.

For example, the structured premix is (i) about 1% to about 10%, preferably about 2% to about 8%, more preferably about 3% to about 5% of the total weight of the structured premix. About 1% to about 10%, preferably about 2% to about 8%, preferably about 3% to about 5% of the total weight of the non-polymer crystalline hydroxyl-containing structuring agent and (ii) the structured premix. % Alkanolamine and (iii) about 5% to about 50%, preferably about 10% to about 30%, more preferably about 12% to about 20% of C ₁₀ to the total weight of the structured premix. C ₂₀ linear alkylbenzene sulfonic acid (HLAS) and (iv) water may be included, the alkanolamine is present in an amount that at least equilibrates the charge of HLAS, and the structured premix has been added. Contains no inorganic cations. Examples of suitable alkanolamines include monoethanolamine, diethanolamine, triethanolamine, and mixtures thereof. Preferably, the alkanolamine is a monoethanolamine.

In another example, the structured premix is (i) about 0.2% to about 35%, preferably about 2% to about 20% of the total weight of the structured premix of the non-polymer crystalline hydroxyl. Containing structuring agents and (ii) about 1% to about 45%, preferably about 8% to about 29% of the total weight of the structured premix, C _10- C ₂₀ alkyl sulfate, and (iii) water. ,including.

The liquid detergent composition of the present invention
(C) With an anionic surfactant of about 5% to about 40% of the total weight of the composition,
(D) With a nonionic surfactant of about 2% to about 25% of the total weight of the composition,
(E) An aqueous laundry detergent composition further containing about 0.5% to about 15% of fatty acids in the total weight of the composition.

These features and other features of the present invention will become apparent to those skilled in the art by examining the following detailed description in conjunction with the appended claims.

As used herein, the articles "a" and "an" are understood to mean one or more of the claims or statements, as used in the claims.

As used herein, "comprising" (including), "comprises" (including), "include" (including), "includes" (including) and "include" (including) shall be non-limiting. Means.

As used herein, the term "substantially free of" (substantially free of) or "substantially free from" (substantially free of) is about 5% by weight of the material indicated. Hereinafter, it means that it is present in an amount of preferably about 2% by weight or less, more preferably about 1% by weight or less.

As used herein, the terms "essentially free of" (essentially free of) or "essentially free from" (essentially free of) are indicated in very small amounts of material. It means that it was not intentionally added to the composition, or preferably is not present in such a composition at an analytically detectable concentration. Compositions may include such that the indicated material is present only as one or more impurities of the material intentionally added to such composition.

As used herein, the term "liquid" refers to a fluid having a viscosity of about 1 to about 2000 mPa ^* s at a shear rate of 25 ° C. and 20 seconds- ¹ . In some embodiments, the viscosity of the liquid may range from about 200 to about 1000 mPa ^* s at a shear rate of 25 ° C. for 20 seconds- ¹ . In some embodiments, the viscosity of the liquid may range from about 200 to about 500 mPa ^* s at a shear rate of 25 ° C. for 20 seconds- ¹ .

All temperatures herein are in degrees Celsius (° C) unless otherwise noted. Unless otherwise stated, all measurements herein are made at 25 ° C. and atmospheric pressure. In all embodiments of the invention, all ratios (%) are relative to the weight of the total composition unless otherwise stated. All ratios are weight ratios unless otherwise specified.

It is understood that the test methods disclosed in the Test Methods section of the present application must be used to measure the values of each of the parameters of the present applicants' inventions described and claimed herein. Yeah.

Benzyl benzoate benzyl benzoate has a relatively high concentration, for example, at least about 1%, preferably about 1% to about 20%, more preferably about 2% of the total weight of the liquid detergent composition containing benzyl benzoate. It is known to have an anti-tick effect when used at% to about 15%, most preferably from about 3% to about 10%.

Since benzyl benzoate is insoluble in water, it is preferred to combine it with a solvent sufficient to maintain a stable dispersion in the aqueous mixture. The aqueous benzyl benzoate mixture can be an emulsion of a colloidal dispersion of benzyl benzoate in water and / or solvent.

The structuring agent and its premix benzyl benzoate should be incorporated into a liquid detergent composition containing at least one non-polymeric crystalline hydroxyl-containing structuring agent to stabilize a colloidal dispersion of benzyl benzoate. Is particularly preferable.

Such non-polymeric crystalline hydroxyl-containing structuring agents can typically be selected from the group consisting of:

（式中、Ｒ^１は−Ｃ（Ｏ）Ｒ^４であり、Ｒ^２はＲ^１又はＨであり、Ｒ^３はＲ^１又はＨであり、Ｒ^４は、独立して、Ｃ_１０〜Ｃ_２２アルキル又は少なくとも１つのヒドロキシル基を含むアルケニルである）、

(In the equation, R ¹ is -C (O) R ⁴ , R ² is R ¹ or H, R ³ is R ¹ or H, and R ⁴ is independently C _{10 to} C _22. Alkyl or alkenyl containing at least one hydroxyl group),

（式中、

(During the ceremony,

Ｒ^４は、ｉ）に定義したとおりであり、
Ｍは、Ｎａ^＋、Ｋ^＋、Ｍｇ^＋＋、若しくはＡｌ^３＋、又はＨである）、及び
ｉｉｉ）これらの混合物。

R ⁴ is as defined i),
M is Na ⁺ , K ⁺ , Mg ⁺⁺ , or Al ³⁺ , or H), and iii) a mixture of these.

Alternatively, the non-polymer crystalline hydroxyl-containing stabilizer may have the following formula:

式中、（ｘ＋ａ）は１１〜１７であり、（ｙ＋ｂ）は１１〜１７であり、（ｚ＋ｃ）は１１〜１７である。好ましくは、ｘ＝ｙ＝ｚ＝１０及び／又はａ＝ｂ＝ｃ＝５である。

In the formula, (x + a) is 11 to 17, (y + b) is 11 to 17, and (z + c) is 11 to 17. Preferably, x = y = z = 10 and / or a = b = c = 5.

Most preferably, the structuring agent is selected from castor oil, castor oil derivatives, especially hydrogenated castor oil (HCO) derivatives such as castor wax, and mixtures thereof. Highly preferred esters include triesters of 12-hydroxyoctadecanoic acid, but mono- and di-esters may also be present. The hydroxyl-containing material preferably has no ethoxylated or propoxylated components or moieties. Commercially available crystalline hydroxyl-containing stabilizers include Rheox, Inc. THIXCIN (registered trademark) manufactured by HIXCIN (registered trademark).

Without being bound by theory, crystalline hydroxyl-containing structuring agents are agents that form a filamentous structured network when crystallized in a liquid matrix. This network reduces the tendency of the materials in the liquid into which the network is formed to coalesce and / or phase separate. The filamentous structuring system is thought to form a fibrous or entangled filamentous network in situ as the matrix cools. The filamentous structuring system can have an average aspect ratio of about 1.5: 1, preferably at least about 10: 1 to about 200: 1. Threadlike structuring system has a viscosity of about 2000cstk following intermediate shear range processing becomes possible ^{(5s -1 ~50s} -1) of the system, while the low shear viscosity of the product in 0.1s ^-1 , At least about 2000 cstk, but more preferably more than about 20,000 cstk.

In a preferred embodiment of the invention, the crystalline hydroxyl-containing structuring agent is provided as a structured premix further comprising an anionic surfactant. The anionic surfactant may be present in the structured premix of the present invention in any suitable weight percent of the entire system. Without being bound by theory, anionic surfactants are believed to act as emulsifiers for HCO and similarly crystallizable glyceride solutions. As used herein, in a preferred embodiment, the "anionic surfactant" is soap and fatty acid free. These may be present in the final laundry detergent composition, but generally other than the limited amount of 12-hydroxystearic acid that can result from the limited hydrolysis of the glyceride in hardened castor oil. Is not intentionally included in the structured premix. For the purposes of describing the overall formulation, "soap" and "fatty acid" are described as builders. In other respects, any suitable anionic surfactant is used in the structured premixes of the present invention.

Preferred anionic surfactants for structured premixes herein have a so-called "low craft temperature". As used herein, the term "craft temperature" is a term well known to researchers in the field of surfactant science. The "craft temperature" for this purpose is measured by taking a sodium salt of an anionic surfactant having a single chain length and measuring the clearing temperature of a 1 wt% solution of the surfactant. Another well-known expertise is differential scanning calorimetry (DSC). In a preferred embodiment of the present invention, the crafting temperature of the corresponding sodium salt is less than about 50 ° C, more preferably less than about 40 ° C, even more preferably less than about 30 ° C, or less than about 20 ° C, or less than 0 ° C. Use a structured premix containing an anionic surfactant.

Non-limiting examples of anionic surfactants suitable for use herein include linear alkylbenzene sulfonate (LAS), alkyl sulphate (AS), alkyl ethoxylated sulfonate (AES), laureth sulfate, and. Examples of these are mixtures. In some embodiments, the anionic surfactant may be present in the structured premix at a concentration of about 5% to about 50%. However, it should be noted that when using an anionic surfactant in excess of about 25% by weight of the structured premix, it is typically necessary to dilute the surfactant with an organic solvent in addition to water. Should be.

In addition, when anionic surfactants for structured premixes are selected and alkylbenzene sulfonate surfactants are selected for this purpose, (1) alkylbenzenes selected from linear alkylbenzenes obtained by the HF process. It is preferable to use either sulfonate and / or (2) medium-chain branched LAS (having a variable amount of methyl side chain). Other preferred sources of LAS include (3) those available from Cepsa LAB and (4) those available from UOP LAB. In contrast, LASs obtained from the DETAL ™ process (UOP, LLC, Des Plaines, IL) and / or LASs with high 2-phenyl content as taught by Huntsman go into a structured premix. Although it is preferable to avoid the use of these, they may be incorporated into the final laundry detergent composition. Although not intended to be limited by theory, excess 2-phenyl isomer content leads to an undesirably high melting temperature of LAS.

For example, structured premixes include the above-mentioned non-polymer crystalline hydroxyl-containing structural agents (HCO) in an aqueous medium containing a linear alkylbenzene sulfonate (LAS) at least partially neutralized with a lower alkanolamine. It may contain a melt (not limited to these). The melt of the non-polymer crystalline hydroxyl-containing structural agent is in the form of an emulsion or microemulsion, with LAS acting as an emulsifier. For clarity, "neutralized with an alkanolamine" should be understood to mean that the counterion of the anionic surfactant LAS is a cationic or cation of an alkanolamine. .. This alkanolamine does not act as a solvent or buffer. The emulsion is cooled to crystallize the structuring agent. This gives an external structuring agent in the form of a premix containing alkanolamines and no sodium, which can also be shipped as a commercial product or added directly to the rest of the liquid laundry detergent composition. You can also do it. In this embodiment, the anionic surfactant is not used in a sodium-neutralized form, and more generally, the anionic surfactant is a salt of sodium, potassium, lithium, magnesium, or calcium, etc. Not used in the form of any monovalent or divalent inorganic cationic salt of. Preferably, the structured premixes and laundry detergents herein contain about 5%, 2%, or less than 1% monovalent inorganic cations such as sodium or potassium. In a preferred embodiment, no monovalent and / or divalent inorganic metal ions as a whole are added to the structured premix (ie 0%) and the soap is used in the preparation of the structured premix. Not intentionally added. In other words, the structured premix is substantially free of monovalent and / or divalent inorganic metal ions. In a particularly preferred embodiment of the invention, the structured premix is
(I) About 1% to about 10% by weight, preferably about 2% to about 8% by weight, more preferably about 3% to about 5% by weight of the non-polymer based on the total weight of the structured premix. Crystalline hydroxyl-containing structuring agent and
(Ii) With about 1% to about 10% by weight, preferably about 2% to about 8% by weight, more preferably about 3% to about 5% by weight of alkanolamine, based on the total weight of the structured premix. ,
(Iii) About 5% to about 50% by weight, preferably about 10% to about 30% by weight, more preferably about 12% to about 20% by weight of C ₁₀ to the total weight of the structured premix. and C ₂₀ linear alkyl benzene sulfonic acid (HLAS),
(Iv) can contain water
The alkanolamine is present in an amount that at least equilibrates the charge of HLAS and the structured premix is free of added inorganic cations.

Alkanolamines are essential components of the above structured premix. Without being bound by theory, alkanolamines are thought to react with acidic species of anionic surfactants to form alkanolamine-neutralized anionic surfactants. Therefore, alkanolamines can be obtained by mixing alkanolamines with acidic anionic surfactants such as HLAS in a premix in situ, or by neutralizing HLAS separately with alkanolamines to neutral alkanols. It can be introduced into the premix by any other suitable means, such as by adding amine-LAS to the premix. However, in some embodiments, the alkanolamine is stoichiometrically in excess of the amount required to neutralize the anionic surfactant in acid form in the structured premix of the invention. It may be desirable to do so. In such embodiments, the alkanolamine can serve the dual purpose of acting as part of the emulsified surfactant and acting as a buffer.

In general, any suitable alkanolamine or mixture of alkanolamines can be used in the present invention. Suitable alkanolamines can be selected from lower alkanolmonos, di-, and trialkanolamines, such as monoethanolamine, diethanolamine, or triethanolamine. Higher alkanolamines have higher molecular weights and may have lower mass efficiency for this purpose. For mass efficiency reasons, monoalkanolamines and dialkanolamines are preferred. Monoethanolamine is particularly preferred, but in certain embodiments, additional alkanolamines, such as triethanolamine, may be useful as buffers. In addition, some embodiments of the invention are structured for known purposes such as solubility, buffering, control of chlorine in cleaning solutions and / or for enzyme stabilization in laundry detergent products. It is envisioned that alkanolamine salts of anionic surfactants other than the aliquots used in the premix may be added separately to the final detergent formulation.

In another example, the structured premix is a non-polymer crystalline hydroxyl-containing structural agent (including, but not limited to, HCO) described above in an aqueous medium containing an alkylsulfate surfactant added as an emulsifier. It may contain a melt. The alkyl sulfate surfactant is preferably added at a concentration above the critical micelle concentration (cmc) of the surfactant. When the non-polymer crystalline hydroxyl-containing structuring agent is emulsified into an aqueous phase containing these micelles, some of the non-polymer crystalline hydroxyl-containing structuring agent is transferred to the micelles and stabilized by the micelles. Form droplets. Alkyl sulfate surfactants are from about 1% to about 45% by weight, preferably from about 4% to about 37% by weight, more preferably from about 8% to about 29% by weight, most preferably from about 29% by weight of the structured premix. It may be present in the structured premix at a concentration of about 8% to about 24% by weight. The weight percent of the alkylsulfate surfactant is measured based on the weight percent of the surfactant anion. That is, the counterion is excluded. When using an anionic surfactant in excess of about 25% by weight of the structured premix, it is preferred to dilute the surfactant with an organic solvent in addition to water.

Preferred alkyl sulfate surfactants are C _{10 to} C ₂₀ alkyl sulfates and mixtures thereof, preferably C _{10 to} C ₁₈ alkyl sulfates, and mixtures thereof, more preferably C _{12 to} C ₁₄ alkyl sulfates, and These mixtures, most preferably selected from the group consisting of sodium dodecyl sulfate. Alkyl sulfate surfactants are preferably non-ethoxylated, non-propoxylated, or a combination thereof. Alkyl sulfate surfactants typically exist in the form of alkanolamines or salts with alkali metals such as sodium and potassium. Preferably, the alkyl sulfate surfactant is neutralized with an alkanolamine, such as monoethanolamine or triethanolamine, and is completely soluble in the continuous phase.

In a particularly preferred embodiment of the invention, the structured premix is
(I) With the non-polymer crystalline hydroxyl-containing structuring agent of about 0.2% to about 35% by weight, preferably about 2% to about 20% by weight, of the total weight of the structured premix.
(Ii) C _{10 to} C ₂₀ alkyl sulfates of about 1% to about 45% by weight, preferably about 8% to about 29% by weight, of the total weight of the structured premix.
(Iii) With water
May include.

Other Ingredients In addition to benzyl benzoate and the non-polymer crystalline hydroxyl-containing structuring agents described above, the liquid detergent compositions of the present invention are surfactants, enzymes, optical brighteners, anti-staining agents, defoaming agents. , Detergent stain-releasing polymers, other beneficial agents, and one or more detergency active agents selected from the group consisting of combinations of these auxiliary agent types. All of these substances are of the types traditionally used in detergent products, especially laundry detergent products. However, they can be particularly effectively supplied to the aqueous cleaning solution and / or to the fabric being washed in the cleaning solution through the compositions of the present invention.

The liquid detergent compositions herein are essentially of about 5% to about 70% by weight, preferably about 7% to about 65% by weight, more preferably about 10% to about 50% by weight. Contains certain types of detergency surfactant components. Such an essential detergency surfactant component must include an anionic surfactant, a nonionic surfactant, or a combination of these two surfactant types.

Suitable anionic surfactants useful herein are conventional anions typically used in liquid detergent products, including those described above, for emulsifying the structuring agents in the structured premix. It may contain any of the types of sex surfactants.

Suitable nonionic surfactants useful herein can include any kind of conventional nonionic surfactants typically used in liquid detergent products. These include alkoxylated fatty alcohols, ethylene oxide (EO) -propylene oxide (PO) block polymers and amine oxide surfactants. Preferred for use in liquid detergent products herein are nonionic surfactants, which are usually liquids.

Preferred nonionic surfactants for use herein include alcohol alcoholic chelate nonionic surfactants. Alcohol alkoxylate is a general formula:
R ¹ ( _Cm H _2m O) _n OH
(In the formula, R ¹ is a C _{8 to} C ₁₆ alkyl group, m is about 2 to about 4, and n is in the range of about 2 to about 12). Preferably, R ¹ is a primary or secondary alkyl group containing from about 9 to about 15 carbon atoms, more preferably from about 10 to about 14 carbon atoms. is there. Preferably, the alkoxylated aliphatic alcohol is also an ethoxylated substance containing about 2 to 12 ethylene oxide moieties per molecule, more preferably about 3 to about 10 ethylene oxide moieties per molecule. Suitable alkoxylated fatty alcohol nonionic surfactants are marketed by the Shell Chemical Company under the trade names Neodol® and Dobanol®.

Another type of nonionic surfactant that can be utilized in the compositions of the present invention includes ethylene oxide (EO) -propylene oxide (PO) block polymers. This type of substance is a well-known nonionic surfactant commercially available under the trade name Pluronic. These materials are formed by adding a block of ethylene oxide moieties to the ends of the polypropylene glycol chain to adjust the surface active properties of the resulting block polymer.

Yet another suitable type of nonionic surfactant useful herein comprises an amine oxide surfactant. Amine oxides are substances often referred to in the art as "semi-polar" nonionic substances. Amine oxides have the formula: R (EO) _x (PO) _y (BO) _z N (O) (CH ₂ R') ₂ . It has qH ₂ O. In this equation, R is a relatively long chain hydrocarbyl moiety that can be saturated or unsaturated, linear or branched, with about 8 to about 20, preferably about 10 to about 16 carbon atoms. It may contain, more preferably a _C 12 _{-C 16} primary alkyl. R'is a short chain moiety preferably selected from hydrogen, methyl and -CH ₂ OH. When x + y + z is different from 0, EO is ethyleneoxy, PO is propyleneneoxy, and BO is butyleneoxy. Amine oxide surfactants are represented by _C12-14 alkyldimethylamine oxides.

In the liquid detergent composition herein, the essential detergency surfactant component may include a combination of an anionic surfactant substance and a nonionic surfactant substance. In such cases, the weight ratio of anionic to nonionic is typically in the range of about 100: 1 to about 1: 100, more typically about 20: 1 to about 1:20. In a particularly preferred embodiment of the invention, the liquid detergent composition is (in addition to the benzyl benzoate and structuring agents described above):
(C) With an anionic surfactant of about 5% to about 40% of the total weight of the composition,
(D) With a nonionic surfactant of about 2% to about 25% of the total weight of the composition,
(E) Further comprises from about 0.5% to about 15% fatty acids of the total weight of the composition.

The liquid laundry detergent composition herein may contain one or more detergency enzymes that provide detergency and / or fabric care effects. Examples of suitable enzymes are hemicellulase, peroxidase, protease, cellulase, xylanase, lipase, phosphorlipase, esterase, cutinase, pectinase, keratanase, reductase, oxidase, phenoloxidase, lipoxygenase, ligninase, pullulanase, tannase, mannase? , Pentosanase, malanase, β-glucanase, arabinosidase, hyaluronidase, chondroitinase, laccase, and known amylase, or combinations thereof. Preferred enzyme combinations include a cocktail of conventional detergency enzymes such as proteases, lipases, cutinases and / or cellulases in combination with amylase. When used, the enzyme is typically a liquid wash herein at a concentration sufficient to provide a weight of up to about 10 mg, more typically about 0.01 mg to about 5 mg of active enzyme per gram of composition. Incorporated into the detergent composition. In other words, the aqueous liquid detergent compositions herein are typically commercially available enzyme preparations from about 0.001% to about 5% by weight, preferably from about 0.01% to about 1% by weight. May include. For example, the protease enzyme is usually present in such commercially available preparations at a concentration sufficient to provide about 0.005 to about 0.1 Anson units (AU) of activity per gram of detergent composition.

The liquid laundry detergent composition herein may include one or more optical brighteners that provide a fabric treatment effect. Such materials, also known as optical brighteners (FWAs), generally adhere to the fabric or clothing to be washed and exhibit the optical or chromaticity properties of the substrate thus treated. Change. A preferred optical brightener property is anionic. Most are stilbene derivatives. When used, optical brighteners typically have concentrations ranging from about 0.01% to about 1% by weight, preferably from about 0.05% to about 0.5% by weight. Incorporated into the liquid laundry detergent composition in the book.

The liquid laundry detergent composition herein may contain one or more anti-staining agents that allow the desired washing of colored fabrics. Suitable polymer transfer inhibitors include polyvinylpyrrolidone polymers, polyamine N-oxide polymers, copolymers of N-vinylpyrrolidone and N-vinylimidazole, polyvinyloxazolidone, and polyvinylimidazole, or mixtures thereof. Not limited. When used, the dye transfer inhibitor is typically about 0.0001% by weight, more preferably about 0.01% by weight, most preferably about 0.03% by weight to about 10% by weight, more preferably. Is incorporated into the liquid laundry detergent compositions herein in concentrations ranging from about 2% by weight, most preferably about 1% by weight.

The liquid laundry detergent composition herein acts as a defoamer to minimize excessive foaming of the composition herein when used to wash fabrics in an automatic washing machine. It may contain one or more materials. Often, the defoamer system is based on a silicone or silica-silicone combination. When used, the antifoaming agent is typically incorporated into the liquid laundry detergent compositions herein in concentrations ranging from about 0.001% to about 2% by weight. More preferably, the antifoaming agent may make up about 0.01% to about 1% by weight of the compositions herein.

The liquid laundry detergent composition herein may contain one or more detergency stain-releasing polymers that provide a fabric treatment effect. Examples of the polymer stain releasing agent useful in the present invention include a copolymer block of terephthalate and polyethylene oxide or polypropylene oxide. A preferred stain release agent is a copolymer having a block of terephthalate and polyethylene oxide. More specifically, these polymers consist of repeating units of ethylene and / or propylene terephthalate and polyethylene oxide terephthalate at a molar ratio of ethylene terephthalate units of about 25:75 to about 35:65 to polyethylene oxide terephthalate units. Will be done. This polyethylene oxide terephthalate contains a polyethylene oxide block having a molecular weight of about 300 to about 2000. The molecular weight of this polymeric stain release agent ranges from about 5,000 to about 55,000. When used, the stain-releasing polymer typically has a concentration in the range of about 0.01% to about 10% by weight, more preferably about 0.1% to about 5% by weight of the composition. Incorporated into the liquid laundry detergent compositions herein.

In addition to the above ingredients, the wash-wash auxiliary ingredients of the compositions herein may also adhere to the fabric to be washed and provide additional beneficial agents that provide one or more fabric care or treatment effects to the fabric. It may be included. Such effects include, for example, fabric flexibility, antistatic effect, ironing facilitation effect, anti-friction effect, anti-pilling effect, color protection, wrinkle removal or improved resistance to wrinkles, fabric. The effect of the substantial scent or odor of, and the effect of protecting against bad odors can be mentioned. When used, such additional fabric care beneficial polymers typically vary from about 0.05% to about 20% by weight, depending on the nature of the material to which they adhere and the effect the polymer will provide. Concentrations in the range of% can be incorporated into the liquid laundry detergent compositions herein. More preferably, such fabric care beneficial agents may make up about 0.1% to about 10% by weight of the composition.

Example 1: Comparative Example showing the phase stability of a liquid laundry detergent composition containing benzyl benzoate (BB) together with various concentrations of HCO-containing structured premix. First, a structured premix containing the following components was prepared. Form.

Various concentrations of such HCO-containing structured premixes are then added to the respective liquid laundry detergent compositions (A)-(I) together with 3% benzyl benzoate (BB) as follows.

^＊その他の成分としては、ビルダー、キレート剤、染料、酵素、溶媒、抑泡剤、香料などが挙げられる。

^* Other ingredients include builders, chelating agents, dyes, enzymes, solvents, defoamers, fragrances and the like.

Next, the phase stability of each of the above liquid laundry detergent compositions (A) to (I) is tested according to the following steps.
-Put 15-40 mL of sample liquid laundry detergent composition into a 20-40 mL clear glass bottle.
-Place the glass bottle in a low temperature (-5 ° C, -3 ° C, 0 ° C) oven for stability testing.
• Inspect the appearance of the sample at any different time point (eg, 1, 8, 12, 13 weeks).
-Remove the sample from the low temperature oven and leave it to return the sample temperature to room temperature (about 25 ° C). Sample temperature typically returns within 6-24 hours after removing the sample from the cold oven.
-Inspect the appearance of the sample under normal light.
• If a particular sample looks homogeneous and isotropic to the newly created sample, record a "pass" for the phase stability test. If the sample shows small oil droplets inside, large oil agglomerates, or complete separation into two phases, the phase stability test is recorded as "failed".

The following are the phase stability results recorded for the liquid laundry detergent compositions (A)-(I).

^＊サンプルの作製及びサンプリングのばらつきによって生じたものである可能性のある、油滴の存在がかすかに観察される。

^* The presence of oil droplets, which may be due to sample preparation and sampling variability, is faintly observed.

Various HCO concentrations have an effect on the phase stability of liquid laundry detergent compositions containing 3% BB. When a sample similar to the above is substantially free of HCO (not shown here), it is not phase stable even at room temperature and begins to show white agglomerates after 16 hours at room temperature. However, when the sample contains a concentration of HCO greater than 0.03%, this is phase stable at -3 ° C for 12 weeks. When the HCO concentration exceeds 0.04%, the sample is phase stable at −5 ° C. for 13 weeks.

In addition, BB can form liquid crystals with the surfactant in the above samples. The size of the liquid crystal correlates with the phase stability of the sample. Typically, the smaller the size of the liquid crystal, the better the phase stability. Such a liquid crystal can be visually recognized under a microscope as follows.
• Apply a drop of sample onto a glass slide using a 3.0 mL dropper.
-Place the coverslip on the glass slide above the sample drop.
-Observe the glass slides under a polarizing microscope (Olympus EX51).
-Identify the liquid crystal (lamellar phase) in the sample droplets and replace the polarizing microscope with a normal optical microscope.
-Add a 20X magnification scale and capture a sample photo.

Then, the liquid crystal size can be observed from the photograph of the sample. Below are the liquid crystal sizes observed for some of the above liquid laundry detergent compositions.

The dimensions and values disclosed herein should not be understood as being strictly limited to the exact numbers listed. Instead, unless otherwise indicated, each such dimension is intended to mean both the enumerated values and the functionally equivalent range surrounding the values. For example, the dimension disclosed as "40 mm" is intended to mean "about 40 mm".

Exclude or limit all documents cited in this application, including all cross-referenced or related patents or patent applications, and any patent application or patent in which this application claims priority or its interests. Unless otherwise stated, reference is incorporated herein in its entirety. No citation of any document is considered prior art to any invention disclosed or claimed herein, or it may be used alone or in combination with any other reference (s). At times, it is not considered to teach, suggest or disclose all such inventions. In addition, if any meaning or definition of a term in this document conflicts with the meaning or definition of the same term in the document incorporated by reference, the meaning or definition given to that term in this document applies. It shall be.

Having illustrated and described specific embodiments of the invention, it will be apparent to those skilled in the art that various other modifications and modifications can be made without departing from the spirit and scope of the invention. Therefore, it is intended that all such modifications and modifications within the scope of the present invention are covered by the appended claims.

Claims (9)

Liquid laundry detergent composition
(A) 1% to 20% of the total weight of the liquid detergent composition and benzyl benzoate.
(B) A non-polymer crystalline hydroxyl-containing structuring agent of 0.03% to 1% of the total weight of the liquid detergent composition.
Liquid laundry detergent composition, including. The liquid laundry detergent composition according to claim 1, which contains 2% to 15%, preferably 3% to 10% of benzyl benzoate, based on the total weight of the liquid detergent composition. The non-polymer crystalline hydroxyl-containing structuring agent is a cured castor oil, preferably a non-polymer crystalline hydroxyl-containing structuring agent having an aspect ratio of at least 5: 1 and a needle radius of at least 20 nanometers. The liquid laundry detergent composition according to claim 1 or 2, which exists as a crystal having a spherical elongated crystallinity. The liquid washing according to any one of claims 1 to 3, which comprises 0.04% to 0.8%, preferably 0.1% to 0.5% of the non-polymer crystalline hydroxyl-containing structuring agent. Detergent composition. The liquid laundry detergent composition according to any one of claims 1 to 4, wherein the non-polymer crystalline hydroxyl-containing structuring agent is provided in a structured premix further containing an anionic surfactant. The structured premix
(I) With the non-polymer crystalline hydroxyl-containing structuring agent of 1% to 10%, preferably 2% to 8%, more preferably 3% to 5% of the total weight of the structured premix.
(Ii) With 1% to 10%, preferably 2% to 8%, preferably 3% to 5% alkanolamines of the total weight of the structured premix.
(Iii) 5% to 50%, preferably 10% to 30%, more preferably 12% to 20% of the total weight of the structured premix with C _{10 to} C ₂₀ linear alkylbenzene sulfonic acid (HLAS).
(Iv) Including water
The alkanolamine is present in an amount that at least equilibrates the charge of the HLAS.
The liquid laundry detergent composition according to claim 5, wherein the structured premix does not contain added inorganic cations. The liquid detergent composition according to claim 6, wherein the alkanolamine is selected from the group consisting of monoethanolamine, diethanolamine, triethanolamine, and a mixture thereof, preferably the alkanolamine is monoethanolamine. The structured premix
(I) With the non-polymer crystalline hydroxyl-containing structuring agent of 0.2% to 35%, preferably 2% to 20% of the total weight of the structured premix.
(Ii) 1% to 45%, preferably 8% to 29% of the total weight of the structured premix with C _{10 to} C ₂₀ alkyl sulfates.
(Iii) With water
The liquid detergent composition according to claim 5. (C) 5% to 40% of the total weight of the liquid detergent composition and an anionic surfactant.
(D) 2% to 25% of the total weight of the liquid detergent composition and a nonionic surfactant.
(E) Fatty acids of 0.5% to 15% of the total weight of the liquid detergent composition and
The liquid detergent composition according to any one of claims 1 to 8, further comprising.