Low-viscosity liquid detergent composition comprising antifoaming agent and non-ionic surfactant

Abstract

To provide a low-viscosity liquid detergent composition comprising an antifoaming agent and a non-ionic surfactant.SOLUTION: A low-viscosity liquid detergent composition comprises: 0.03 wt.% to 5 wt.% of the composition, of an antifoaming agent; and 3 wt.% to 30 wt.% of the composition, of a non-ionic surfactant which is an alcohol ethoxylate of formula (I), wherein R is selected from a saturated or unsaturated, linear or branched, C8 to C20 alkyl group, more than 90% of n is 0≤n≤15, the average value of n is 4 to 14, and less than about 20 wt.% of the alcohol ethoxylate are ethoxylates having less than 8 of n.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a low viscosity liquid detergent composition comprising an antifoam agent and a nonionic surfactant. [Background technology]

[0002] As detergent products have evolved, consumers' cleaning needs have been well met. In addition to cleaning performance, consumers also expect some other benefits. For example, in some areas, consumers prefer liquid detergent products with low viscosity and low foaming. Consumers in these areas consider high viscosity to be equivalent to "messy" and difficult to operate. Therefore, low viscosity is highly desirable. Furthermore, low foaming performance is favorable for washing machine users, since high foaming can cause high water volume and long rinse times.

[0003] However, these two advantages are somewhat contradictory, because the antifoaming agents (e.g., silicones) commonly used in liquid detergent compositions have high viscosity.Therefore, it is very difficult to provide a low-viscosity liquid detergent composition in the presence of an antifoaming agent.In addition, the addition of an antifoaming agent may impair the stability of the liquid detergent composition, leading to phase separation and / or aggregation.In this case, it may be necessary to further include a stabilizer, which may further increase the viscosity.The addition of such a stabilizer may further increase the viscosity. Summary of the Invention [Problem to be solved by the invention]

[0004] Thus, there is a need for low viscosity liquid detergent compositions that contain antifoam agents. [Means for solving the problem]

[0005] It is a surprising and unexpected discovery of the present invention that the low viscosity liquid detergent composition according to the present disclosure can meet the above requirements, i.e., that the low viscosity liquid detergent composition according to the present disclosure can provide both low suds performance and low viscosity.

[0006] In particular, it is surprising that the viscosity is significantly reduced by replacing the conventional nonionic surfactant with the new nonionic surfactant. Such a finding is completely unexpected, since the inventors have tested many approaches to reduce viscosity and failed. For example, solvents commonly used to modify viscosity did not work in the context of relatively high levels of defoamers.

[0007] Correspondingly, the present invention provides, in one aspect, a low-viscosity liquid detergent composition comprising: a) 0.03% to 5% by weight of the composition of an antifoaming agent; b) 3% to 30% by weight of the composition, Nonionic surfactants which are alcohol ethoxylates of formula (I)

[0008] [ka] (wherein R is selected from saturated or unsaturated, linear or branched C8 to C20 alkyl groups; More than 90% of n are 0≦n≦15, and the average value of n is 4 to 14; wherein less than about 20% by weight of the alcohol ethoxylates are ethoxylates having n less than 8.

[0009] In some embodiments, the alcohol ethoxylates of formula (I) may include an average value of n from 5 to 10.

[0010] In some embodiments, the alcohol ethoxylate of formula (I) may be an ethoxylate where n is 8, with 10% to 20% by weight of the alcohol ethoxylate being 8.

[0011] In some embodiments, less than about 10% by weight of the alcohol ethoxylates may be ethoxylates having n less than 7.

[0012] In some embodiments, the average value of n in formula (I) may be 8-11.

[0013] In some embodiments, the alcohol ethoxylates of formula (I) may comprise ethoxylates where n is 9-10, with about 30% to about 55% by weight of the alcohol ethoxylate.

[0014] In some embodiments, the alcohol ethoxylates of formula (I) may comprise ethoxylates having n greater than 7, with greater than 80% by weight of the alcohol ethoxylates.

[0015] In some embodiments, the alcohol ethoxylate may be derived from a natural alcohol, a synthetic alcohol, or a mixture thereof.

[0016] In particular, nonionic surfactants suitable in the present application may be present in an amount ranging from 3% to 25% by weight of the composition, preferably from 3.5% to 20%, more preferably from 4% to 18%, even more preferably from 4.5% to 16%, and most preferably from 5% to 15% by weight, for example 5.5%, 6%, 6.5%, 7%, 8%, 9%, 10%, 12%, 14%, or any range therebetween.

[0017] In some embodiments, the liquid detergent composition comprises: c) may further comprise from 0.01% to 10% by weight of the composition of a crystalline hydroxyl-containing stabilizer.

[0018] In particular, the stabilizer suitable in the present application may be present in an amount ranging from 0.01% to 9% by weight of the composition, preferably from 0.02% to 8% by weight, more preferably from 0.03% to 5% by weight, even more preferably from 0.05% to 3% by weight, and most preferably from 0.06% to 2% by weight. Preferably, the stabilizer may be selected from the group consisting of microcrystalline cellulose or a derivative thereof, castor oil or a derivative thereof, hydrogenated castor oil or a derivative thereof, and any combination thereof. More preferably, the stabilizer may be microcrystalline cellulose and / or hydrogenated castor oil.

[0019] In particular, the antifoaming agent suitable in the present application may be present in an amount ranging from 0.04% to 3% by weight of the composition, preferably from 0.08% to 2% by weight, more preferably from 0.1% to 1% by weight, such as 0.2%, 0.3%, 0.5%, 0.7%, 1%, 1.5%, 2%, 2.5% by weight, or any range therebetween. Preferably, the antifoaming agent may comprise silicone, silica, or any mixture thereof. More preferably, the antifoaming agent may comprise polydimethylsiloxane (PDMS).

[0020] In some embodiments, the liquid detergent composition comprises: d) 0.01% to 3%, preferably 0.01% to 1%, more preferably 0.02% to 0.5%, and most preferably 0.03% to 0.3% by weight of the composition of an antibacterial agent, preferably an antibacterial agent selected from the group consisting of diphenyl ether and combinations thereof; e) 4.5% to 40% by weight, preferably 5.5% to 30% by weight, more preferably 6% to 20% by weight, most preferably 6.5% to 18% by weight of an organic acid, preferably an organic acid selected from the group consisting of citric acid, lactic acid, tartaric acid, malic acid and any combination thereof, of the composition; and / or f) 2% to 35% by weight, preferably 3% to 30% by weight, more preferably 4% to 25% by weight, and most preferably 5% to 20% by weight of the composition, of an anionic surfactant, preferably C6 to C 20Linear alkylbenzene sulfonate (LAS), C6-C 20 Alkyl sulfate (AS), C6-C 20 Alkyl alkoxy sulfates (AAS), C6-C 20 Methyl ester sulfonate (MES), C6-C 20 The composition may further comprise an anionic surfactant selected from the group consisting of alkyl ether carboxylates (AECs), and any combination thereof.

[0021] In a preferred embodiment, the liquid detergent composition according to the present application comprises a) 0.1% to 0.5% by weight of the composition of a defoamer, the defoamer comprising polydimethylsiloxane (PDMS); b) 10% to 15% by weight of the composition of an alcohol ethoxylate of formula (I) shown above; c) 0.06% to 2% by weight of the composition of hydrogenated castor oil; d) 0.03% to 0.3% by weight of the composition of 4-4'-dichloro-2-hydroxydiphenyl ether; e) 6.5% to 18% by weight of the composition of citric acid, and / or f) 5% to 20% by weight of the composition 20 Linear alkylbenzene sulfonate (LAS) may be included.

[0022] An advantage of the liquid detergent compositions according to the present disclosure is that they can provide both a low viscosity liquid and low suds performance. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] definition As used herein, articles such as "a" and "an," when used in a claim, are understood to mean one or more of what is claimed or described.

[0024] As used herein, the terms "comprise, comprise, comprising," "include, includes, including," "contain, contains, containing" are intended to be open-ended, i.e., other steps and other ingredients can be added that do not affect the end result. The above terms include the terms "consisting of" and "consisting essentially of."

[0025] As used herein, when a composition is "substantially free" of a particular component, it means that the composition contains less than a certain amount of the particular component, or less than 0.1% by weight of the composition, or less than 0.01% by weight, or 0.001% by weight.

[0026] As used herein, the term "liquid detergent composition" refers to a composition that is in a form selected from the group consisting of pourable liquids, gels, creams, and combinations thereof. Liquid detergent compositions may be either aqueous or non-aqueous, and may be anisotropic, isotropic, or combinations thereof.

[0027] As used herein, the term "defoamer" refers to a compound whose primary intended function is to suppress the foaming or sudsing caused by detergents during cleaning. Conventional defoamers include silicone defoamer compounds, alcohol defoamer compounds, paraffin defoamer compounds, and mixtures thereof.

[0028] As used herein, the term "antibacterial agent" refers to a compound whose function is primarily intended to kill bacteria and / or prevent the growth or reproduction of bacteria. Conventional antibacterial agents include cationic antibacterial agents (e.g., certain ammonium chlorides), non-ionic antibacterial agents, and the diphenyl ether compounds used in the present invention are non-ionic antibacterial agents.

[0029] As used herein, the term "primary surfactant" refers to a surfactant that is present in a composition in an amount greater than any other surfactant contained by such composition.

[0030] As used herein, the term "majority surfactant" refers to a surfactant present in a composition in an amount that is at least 50% by weight of the total surfactant content in such composition.

[0031] As used herein, the term "alkyl" means a hydrocarbyl moiety that is branched or unbranched, substituted or unsubstituted. The term "alkyl" includes the alkyl portion of an acyl group.

[0032] As used herein, the term "washing liquor" refers to an aqueous solution in the amount typically used for one laundry wash cycle, preferably 1 L to 50 L, or alternatively 1 L to 20 L for manual wash and 20 L to 50 L for machine wash.

[0033] As used herein, the term "soiled fabric" is used non-specifically and may refer to any type of natural or man-made fiber, including natural, man-made, and synthetic fibers, such as, but not limited to, cotton, linen, wool, polyester, nylon, silk, acrylic, and the like, as well as various blends and combinations.

[0034] Defoamer Suitable defoamers can include, for example, silicone defoamer compounds, alcohol defoamer compounds, paraffin defoamer compounds, and mixtures thereof.

[0035] In particular, the preferred antifoam compound suitable for use herein is a silicone antifoam compound that contains a silicone component.Many such silicone antifoam compounds also contain a silica component.As used herein, and generally throughout the industry, the term "silicone" includes relatively high molecular weight polymers that have siloxane units and various hydrocarbyl groups, such as polyorganosiloxane oils, such as polydimethylsiloxanes, dispersions or emulsions of polyorganosiloxane oils or resins, and combinations of polyorganosiloxanes and silica particles, where the polyorganosiloxanes are chemisorbed or fused to the silica.Silica particles are often hydrophobized, for example, as trimethylsiloxysilicate.An example of a linear polydimethylsiloxane with mono / diglyceride that is a suitable silicone antifoam compound is the linear polydimethylsiloxane commercially available from Dow Corning, Wacker Chemie, and Momentive.

[0036] Other suitable antifoam compounds include, for example, high molecular weight hydrocarbons such as paraffins, light oil odorless hydrocarbons, fatty esters (e.g., fatty acid triglycerides, glyceryl derivatives, polysorbates), fatty acid esters of monohydric alcohols, aliphatic C18-C40 ketones (e.g., stearone), N-alkylated aminotriazines such as tri- to hexa-10 alkylmelamines or di- to tetra-alkyldiamine chlorotriazines formed as products of cyanuric chloride with 2 or 3 moles of primary or secondary amines containing 1 to 24 carbon atoms, propylene oxide, bisstearic acid amides and monostearyl phosphates such as monostearyl alcohol phosphate esters and monostearyl dialkali metal (e.g., K, Na, and Li) phosphates and phosphate esters, and nonionic polyhydroxyl derivatives.

[0037] Other antifoaming agents useful herein include secondary alcohols (e.g., 2-alkyl alkanols as described in German Patent No. 40 21 265) and mixtures of such alcohols with silicone oils. Secondary alcohols include C6-C16 alkyl alcohols having C1-C16 chains such as 2-hexyldecanol, 2-octyldodecanol, and 2-butyloctanol.

[0038] Nonionic Surfactants The composition according to the present disclosure includes a nonionic surfactant having a specific structure. In particular, the nonionic surfactant suitable for use in the liquid detergent composition according to the present disclosure is an alcohol ethoxylate having the following general formula (I):

[0039] [ka] (Wherein, R is a saturated or unsaturated, linear or branched C8-C 20 alkyl groups, and greater than 90% of n are 0≦n≦15).

[0040] The alcohol ethoxylates described herein are typically not single compounds as suggested by their general formula (I); rather, the alcohol ethoxylates comprise a mixture of several homologs having various polyalkylene oxide chain lengths and molecular weights. Among the homologs, those having a total number of alkylene oxide units per mole of alcohol close to the most prevalent alkylene oxide adduct are desirable, and those having a total number of alkylene oxide units much less than or much more than the most prevalent alkylene oxide adduct are less desirable. In other words, a "narrow range" or "peaked" alkoxylated alcohol composition is desirable. A "narrow range" or "peaked" alkoxylated alcohol composition refers to an alkoxylated alcohol composition having a narrow distribution of the number of moles of alkylene oxide adduct.

[0041] A "narrow range" or "peaked" alkoxylated alcohol composition may be desirable for selected applications. Homologues within a selected target distribution range may have the appropriate lipophilic-hydrophilic balance for a selected application. For example, for an ethoxylated alcohol product containing an average ratio of 5 ethylene oxide (EO) units per molecule, the homologues having the desired lipophilic-hydrophilic balance may range from 2EO to 9EO.

[0042] The alkoxylated alcohol compositions of the present disclosure may have an average degree of ethoxylation ranging from about 0 to about 15, such as from about 4 to about 14, from about 5 to 10, from about 8 to 11, and from about 6 to 9. The alkoxylated alcohol compositions of the present disclosure may have an average degree of ethoxylation of 11, 10, 9, 8, 7, 6, or 5. In some preferred embodiments, the alkoxylated alcohol compositions of the present disclosure may have an average degree of ethoxylation of at least 8 or 9.

[0043] The present disclosure relates to a composition comprising an alcohol ethoxylate of formula (I)

[0044] [ka] (Wherein, R is a saturated or unsaturated, linear or branched C8-C 20 alkyl groups, wherein greater than 90% of n are 0≦n≦15, the average value of n is from about 6 to about 10, less than about 10% by weight of the alcohol ethoxylates have n less than 7, and about 10% to about 20% by weight of the alcohol ethoxylates are ethoxylates where n is 8.

[0045] The composition may comprise an average value of n of about 10. The composition may have the following ranges for each of the following n: n=0 is 5% max, n=1, 2, 3, 4, 5 is 2% max, n=6 is 4% max, n=7 is 10% max, n=8 is 12%-20%, n=9 is 15%-25%, n=10 is 15%-30%, n=11 is 10%-20%, n=12 is 10% max, n>12 is 10% max. The composition may have 30%-70% n is 9-10. The composition may have more than 50% of the composition n is 8-11.

[0046] The above ranges are illustrated in Table 1. Samples of normal range nonionic surfactants and narrow range nonionic surfactants were analyzed by LCMS ESI(-) and LCMS ESI(+) after derivatization with DMF-SO3 complex as shown in Table 1 below. The relative abundance percentages are listed in the table below. The relative abundance percentages are the weighted average of each ethoxymer relative to the total abundance of all ethoxymers in the sample.

[0047] [Table 1]

[0048] Note that LCMS-ESI(+) is not sensitive to ethoxymers below 3 moles nor to free alcohols. Furthermore, ethoxymers between 3 and 5 moles are underestimated. Typically, when the average distribution of EO is greater than 7 moles of EO, the distribution is less affected by this sensitivity limit. Furthermore, LCMS-ESI(-) may underestimate heavier ethoxymers when the distribution is very broad, as in the normal range nonionic surfactant samples. For this reason, normal range nonionic surfactant samples were analyzed in both + / - modes and averaged.

[0049] CATALYST AND METHOD FOR PRODUCING NARROW RANGE ALCOHOL ALKOXYLATES - Patent application The alkoxylation catalyst described herein allows the preparation of alcohol alkoxylates with a narrow distribution of alkylene oxide molar addition.It is believed that in conventional base-catalyzed alkoxylation reactions, such as KOH-catalyzed alcohol ethoxylation reactions, ethylene oxide tends to react with alcohol ethoxylate conjugates (which are more acidic) rather than with unreacted alcohol conjugates, resulting in a broad distribution with a higher percentage of free alcohol and highly ethoxylated alcohol.

[0050] The alkoxylation catalysts described herein have many advantages for commercial production compared to known catalysts that provide narrow distribution of alkoxylates. The alkoxylation catalysts described herein contain low-cost raw materials that are conventionally used, and the catalysts can be easily prepared. In addition, the alkoxylation catalysts described herein are stable, and therefore easy to handle. In addition, the reaction rate using the alkoxylation catalysts described herein is similar to that of previously used alkaline catalysts, making them suitable for commercial production.

[0051] The alkoxylation catalysts described herein are suitable for alkoxylating natural or synthetic, linear or branched, saturated or unsaturated C8-20 alcohols, alkylphenols, polyols, and the like, having 4 to 22 carbon atoms. Suitable alcohols include pure linear materials (natural products), lightly branched at C2 (Neodol®), lightly randomly branched (Safols®), highly branched at C2 (Isalchem®), and highly branched medium chain materials (HSA). Suitable synthetic alcohols include those sold by Shell Chemical Company under the trademark Neodol®, including Neodol® 25, Neodol® 23, Neodol® 45, and Neodol® 5. Suitable natural alcohols include C1214. Additionally, known reaction procedures, reaction conditions, and reactors for alkylene oxides may be used with the alkoxylation catalysts described herein.

[0052] The alkoxylation process described herein may also be carried out sequentially, first using an acid catalyst described herein and then using a conventional known catalyst such as KOH, to produce alkoxylates having a distribution of alkylene oxide molar addition that is narrower than that produced by the KOH catalyst alone, but broader than that produced by the catalyst of the present invention alone. Running the alkoxylation process sequentially can be particularly useful for targets of higher degrees of ethoxylation, e.g., EO4, EO5, EO6.

[0053] The alkoxylation reaction itself can be carried out in a single pot or continuous process. Ethylene oxide (EO) may be first reacted with a catalyst that activates the EO towards nucleophilic attack. A continuous plant process with suitable residence time can be used.

[0054] The alkoxylation processes disclosed herein can be used to produce alcohol ethoxylates of various degrees of ethoxylation, including the specifically named EO1, EO2, and EO3 targets. The alkoxylation processes disclosed herein may also be used to produce other alcohol alkoxylates of various degrees of alkoxylation, such as propoxylated alcohols.

[0055] A suitable method for preparing the ethoxylated alcohols described herein comprises the steps of: i) reacting an excess (e.g., about 0% to about 5% excess) of ethylene oxide with a linear or branched C8 to C20 alcohol, for a stoichiometric target molar ratio of ethylene oxide, in the presence of about 1% to about 10% of the novel catalyst or the G2 catalyst.

[0056] Other Surfactants Compositions according to the present disclosure may include additional surfactants, including anionic surfactants, cationic surfactants, amphoteric surfactants, and any combination thereof.

[0057] The anionic surfactants suitable for the composition of the present invention are C6 to C 20 Linear alkylbenzene sulfonate (LAS), C6-C 20 Alkyl sulfate (AS), C6-C 20 Alkyl alkoxy sulfates (AAS), C6-C 20 Methyl ester sulfonate (MES), C6C 20 For example, the laundry detergent composition may be selected from the group consisting of C6 to C7 alkyl ether carboxylates (AECs), and any combination thereof. 20 Alkyl alkoxy sulfate (AA x S) (wherein x is about 1 to 30, preferably about 1 to 15, more preferably about 1 to 10, and most preferably about 1 to 3). x The alkyl chain in S may be either linear or branched, with mid-chain branched AA x Particularly preferred are S surfactants. Preferred group AA xS is C, where x is about 1 to 3. 12 ~C 14 In some embodiments, the composition comprises from 1% to 30%, preferably from 2% to 25%, more preferably from 3% to 20%, for example, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 12%, 14%, 16%, 18%, 20%, or any range therebetween, by weight of the composition, of an anionic surfactant.

[0058] The ratio of anionic surfactant to nonionic surfactant may be from 0.01 to 100, preferably from 0.05 to 20, more preferably from 0.1 to 10, and most preferably from 0.2 to 5.

[0059] In some embodiments, the anionic surfactant is a C 20 Linear alkylbenzene sulfonate surfactants (LAS), preferably C 10 ~C 16 LAS, more preferably C 12 ~C 14 Includes LAS.

[0060] In some particular embodiments of the present invention, an anionic surfactant may be present in the composition as the primary surfactant, preferably as the majority surfactant. Preferably, the ratio of anionic surfactant to nonionic surfactant may be from 1.05 to 100, preferably from 1.1 to 20, more preferably from 1.2 to 10, most preferably from 1.3 to 5. In particular, the anionic surfactant may be a C6 to C 20 Linear alkylbenzene sulfonate (LAS) may be included.

[0061] In some particular embodiments of the present invention, the nonionic surfactant may be present as the primary surfactant in the composition, preferably as the majority surfactant. Preferably, the ratio of anionic surfactant to nonionic surfactant may be from 0.01 to 0.95, preferably from 0.05 to 0.9, more preferably from 0.1 to 0.85, and most preferably from 0.2 to 0.8.

[0062] The laundry detergent composition of the present invention may further comprise a cationic surfactant. Non-limiting examples of cationic surfactants include quaternary ammonium salt surfactants (which may have up to 26 carbon atoms, including alkoxylated quaternary ammonium (AQA) surfactants), dimethylhydroxyethyl quaternary ammonium; dimethylhydroxyethyl lauryl ammonium chloride; polyamine cationic surfactants, and amine surfactants (e.g., amidopropyldimethylamine (APA)).

[0063] The laundry detergent composition of the present invention may further comprise another amphoteric surfactant (i.e., other than AO). Non-limiting examples of other amphoteric surfactants include derivatives of secondary and tertiary amines, derivatives of heterocyclic secondary and tertiary amines, or derivatives of quaternary ammonium, quaternary phosphonium, or tertiary sulfonium compounds. Preferred examples include alkyl dimethyl betaines and cocodimethylamidopropyl betaines, sulfobetaines, and hydroxybetaines (wherein the alkyl group is C8-C 18 Or C 10 ~C 14 and betaines, including N-alkyl-N,N-dimethylamino-1-propanesulfonates, which may be

[0064] Stabilizers Stabilizers suitable for use in the present invention can be crystalline hydroxyl-containing stabilizers.

[0065] Preferably, the stabilizing agent may be selected from the group consisting of microcrystalline cellulose (MCC) or a derivative thereof, castor oil or a derivative thereof, hydrogenated castor oil (HCO) or a derivative thereof, and any combination thereof. More preferably, the stabilizing agent may be microcrystalline cellulose or a derivative thereof and / or hydrogenated castor oil or a derivative thereof.

[0066] MCC is a naturally occurring polymer. It is composed of glucose units linked by 1-4 beta-glycosidic bonds. These linear cellulose chains are bundled together as spiraled microfibrils in plant cell walls. These linear cellulose chains are used in food applications and pharmaceutical tablets.

[0067] Castor oil contains C 10 ~C 22 Some include glycerides, especially triglycerides, containing alkyl or alkenyl moieties. Hydrogenation of castor oil to produce HCO converts double bonds that may be present in the starting oil as ricinoleyl moieties, converting the ricinoleyl moieties to saturated hydroxyalkyl moieties, such as hydroxystearyl. The HCO herein may be selected from trihydroxystearin, dihydroxystearin, and mixtures thereof in some embodiments. The HCO can be processed in any suitable starting form, including but not limited to those selected from solids, melts, and mixtures thereof.

[0068] In some preferred embodiments, the stabilizer is incorporated into the liquid detergent composition through the use of an external structuring system(s) (ESS) that includes the stabilizer. An ESS suitable for use in the present invention may include (a) a stabilizer, (b) an alkanolamine, e.g., monoethanolamine (MEA), (c) an anionic surfactant, such as linear alkylbenzene sulfonate (LAS), and (d) additional ingredients.

[0069] HCO is typically present in the ESS of the present invention at a concentration of about 2% to about 10%, about 3% to about 8%, or about 4% to about 6% by weight of the structuring system. In some embodiments, the corresponding percentage of hydrogenated castor oil provided in the finished laundry detergent product is less than about 1.0%, typically 0.1% to 0.8%.

[0070] Useful HCO may have the following properties: a melting point of about 40° C. to about 100° C., or about 65° C. to about 95° C., and / or an iodine value ranging from about 0 to about 5, or about 0 to about 4, or about 0 to about 2.6. The melting point of HCO may be measured using either ASTM D3418 or ISO 11357, both of which utilize DSC: Differential Scanning Calorimetry.

[0071] HCO for use in the present invention includes those available commercially. Non-limiting examples of commercially available HCO for use in the present invention include THIXCIN® from Rheox, Inc. The source of castor oil for hydrogenation to form HCO can be any suitable origin, such as from Brazil or India. In a preferred embodiment, castor oil is hydrogenated using a precious metal, e.g., palladium catalyst, and the hydrogenation temperature and pressure are controlled to optimize hydrogenation of the double bonds of natural castor oil while avoiding unacceptable levels of dehydroxylation.

[0072] The stabilizer in the composition according to the present disclosure may be present in an amount ranging from 0.01% to 9% by weight of the composition, preferably from 0.02% to 8% by weight, more preferably from 0.03% to 5% by weight, even more preferably from 0.05% to 3% by weight, and most preferably from 0.06% to 2% by weight, for example, 0.1%, 0.2%, 0.3%, 0.5%, 0.7%, 1%, 2% or any range therebetween.

[0073] Antibacterial agents A suitable antibacterial agent for use in the present invention may be a diphenyl ether antibacterial agent. Preferably, the antibacterial agent is a hydroxyl diphenyl ether. The antibacterial agent herein may be either halogenated or non-halogenated, but is preferably halogenated. In one embodiment, the antibacterial agent is represented by the following formula (I):

[0074] [ka] (In the formula, each Y is independently selected from chlorine, bromine, or fluorine, preferably chlorine or bromine, more preferably chlorine; each Z is independently selected from SO2H, NO2, or C1-C4 alkyl; r is 0, 1, 2 or 3, preferably 1 or 2; o is 0, 1, 2 or 3, preferably 0, 1 or 2; p is 0, 1 or 2, preferably 0; m is 1 or 2, preferably 1; n is 0 or 1, preferably 0).

[0075] In the above definition of formula (I), 0 means nothing. For example, when p is 0, z does not exist in formula (I). Each Y and each Z can be the same or different. In one embodiment, o is 1, r is 2, and Y is chlorine or bromine. In this embodiment, one chlorine atom can be bonded to a benzene ring while a bromine atom and another chlorine atom can be bonded to another benzene ring, or a bromine atom can be bonded to a benzene ring while two chlorine atoms can be bonded to another benzene ring.

[0076] More preferably, the antimicrobial agent is selected from the group consisting of 4-4'-dichloro-2-hydroxydiphenyl ether ("diclosan"), 2,4,4'-trichloro-2'-hydroxydiphenyl ether ("triclosan"), and combinations thereof. Most preferably, the antimicrobial agent is 4-4'-dichloro-2-hydroxydiphenyl ether, commercially available from BASF under the trade name Tinosan® HP100.

[0077] In addition to diphenyl ether, other antimicrobial agents may also be present, provided they are not present at concentrations that would destabilize the formulation. Among the useful additional antimicrobial agents are chelating agents, which are particularly useful in reducing the resistance of gram-negative microorganisms in hard water. Acidic biocides may also be present.

[0078] Polyamines The laundry detergent compositions herein may further comprise from 0.1% to 10%, preferably from 0.5% to 5% by weight of the composition of a polyamine, preferably a polyethyleneimine, more preferably an alkoxylated polyethyleneimine.

[0079] Polyamines suitable for the laundry detergent compositions herein may have a Mw of greater than 400 g / mol. A preferred class of polyamines is polyethyleneimine (PEI) and its derivatives, such as ethoxylated PEI polymers, propoxylated PEI polymers, polyamines, polyquats, polyglycerolquats, and other PEI derivatives, their salts, or mixtures thereof. In some preferred embodiments, the PEI is a branched, globular polymeric amine, and the molecular weight of the PEI or PEI salt used is from about 800 Daltons to about 2 million Daltons. Furthermore, in some preferred embodiments, the charge density of the PEI or PEI salt used is from about 15 meq / g to about 25 meq / g, more preferably from about 16 meq / g to about 20 meq / g. Examples of such preferred PEIs include the BASF products LUPASOL WF (25 kDa; 16-20 meq / g) and Lupasol® FG (800 Daltons; 16-20 meq / g), and the SOKALAN® family of polymers available from BASF, such as SOKALAN® HP20, and SOKALAN® HP22G.

[0080] Supplementary ingredients The laundry detergent composition described herein may also include auxiliary ingredients.Suitable auxiliary materials include, but are not limited to, builders, chelating agents, rheology modifiers, dye transfer inhibitors, dispersants, enzymes and enzyme stabilizers, catalytic materials, bleach activators, hydrogen peroxide, hydrogen peroxide sources, preformed peracids, polymeric dispersants, clay soil removal / anti-redeposition agents, brighteners, suds suppressors, dyes, photobleaching agents, perfumes, perfume microcapsules, structural elastomers, fabric softeners, carriers, hydrotropes, processing aids, solvents, hueing agents, structurants, and / or pigments.The exact nature and concentration of these auxiliary ingredients in the laundry detergent composition depends on the physical form of the composition and the nature of the washing operation in which the composition is used.

[0081] In one embodiment, the compositions herein include a rheology modifier (also referred to as a "structuring agent" in certain circumstances) that functions to adjust the viscosity of the composition to make it more suitable for packaging assembly. The rheology modifier herein can be any known component capable of suspending particulates in a liquid composition and / or adjusting the rheology. Preferably, the rheology modifier is a hydroxy-containing crystalline material, a polyacrylate, a polysaccharide, a polycarboxylate, an alkali metal salt, an alkaline earth metal salt, an ammonium salt, an alkanol ammonium salt, a C 12 ~C 20 The rheology modifier is selected from the group consisting of aliphatic alcohols, dibenzylidene polyol acetal derivatives (DBPA), gallic acid diamide, cationic polymers comprising a first structural unit derived from methacrylamide and a second structural unit derived from diallyldimethylammonium chloride, and combinations thereof.Preferably, the rheology modifier is a hydroxy-containing crystalline material characterized by being largely crystalline, such as castor oil and castor oil derivatives, hydroxyl-containing fatty acids, aliphatic esters, and aliphatic waxes.More preferably, the rheology modifier is hard castor oil (HCO).

[0082] In one embodiment, the composition may further comprise from 0.1% to 5%, preferably from 0.2% to 2% by weight of the composition of a chelating agent, preferably diethylenetriaminepentaacetic acid (DTPA) and / or glutamic acid diacetate (GLDA).

[0083] Preparation of the Composition The laundry detergent compositions of the present invention are generally prepared by conventional methods known in the art of manufacturing laundry detergent compositions, which typically include mixing the essential and optional ingredients in any desired order to a relatively homogeneous state, with or without heating, cooling, application of vacuum, etc., thereby providing a laundry detergent composition containing the ingredients in the requisite concentrations.

[0084] Test Method Test 1: Viscosity test All viscosities described herein are measured using spindle #62 at 60 rpm and at a temperature of 20+ / -1° C. Viscosity can be measured using any suitable viscosity measuring instrument, for example, an LVDVII+, RVDVII or Brookfield instrument.

[0085] Test 2: Foaming performance test The suds performance test is conducted either in a washing machine or in a simulated cleaning device such as a foam cylinder test set. The washing machine test procedure is as follows. 1) Connect the water flow meter between the washing machine (WM) and the washing tub. The WM is an automatic front-loading or top-loading washing machine. 2) Adjust the water temperature to 35℃±1℃. 3) Place the ballast in the washing machine. Mix the ballast with clean cotton pants, polycotton pants, clean dress shirts, clean knit shirts, worn T-shirts, and ABS T-shirts. Ballast size ranges from 1kg to 5kg depending on the size of your washing machine. 4) Add detergent to the dispenser. The amount of detergent can be from 10g to 100g depending on the ballast size and the size of the washer. 5) Start the WM to wash, rinse, and spin dry. 6) Record and photograph the suds height at the end of the wash (just before draining) and check if there is draining during the main wash. 7) At the end of the rinse, record and photograph the foam height. Record the total rinse time and amount of time and water. 8) Assess risk based on foam height during wash and rinse times, foam photography, and drainage.

[0086] Test 3: Stability test The stability test is performed by visual inspection as follows. 1) Prepare the liquid composition sample to be tested by mixing the ingredients in a 30 mL clear glass bottle. 2) Store the samples prepared in step 1) at various temperatures (5°C or 40°C) for a certain period of time (1, 2 or 4 weeks), or freeze the samples prepared in step 1) in a refrigerator (-18°C) for 24 hours and then thaw in a container (15°C) for 24 hours, subjecting them to freeze / thaw (-18°C and 15°C) cycles (1, 2 or 3 cycles) (repeated if more than 1 cycle is required). 3) Visually inspect the sample to determine if it is still homogeneous after step 2). If there is phase separation, such as the formation of a separate layer or agglomeration, it is judged as "Fail." If there is no phase separation, it is judged as "Pass." EXAMPLES

[0087] Example 1: Comparative test showing the increase in viscosity caused by the introduction of an antifoam agent Six sample liquid laundry detergent compositions were prepared containing the ingredients shown in Table 2 below. Sample 1 contains no antifoam agent, and Samples 2-6 contain an antifoam agent and a stabilizing agent to help stabilize the liquid containing the antifoam agent. Additionally, Samples 3-6 contain various ingredients commonly used to reduce the viscosity of liquid systems.

[0088] The viscosities (HS) of Samples 1-6 were measured by using a Brookfield instrument according to Test 1 above. The results shown in Table 2 indicate that the introduction of an antifoam agent into the liquid detergent compositions of this application significantly increases the viscosity, and ingredients commonly used to reduce viscosity are unable to reduce the viscosity to the desired level.

[0089] [Table 2] a Defoaming material available from SIXIN (Jiangsu SIXIN Scientific Technological Application Research Institute Co., Ltd), which is a mixture containing polydimethylsilicone (PDMS), silica, polyether-modified polydimethylsiloxane, and polyether. b Neodol® 25-7 is a C ethoxylated with an average of 7 moles of ethylene oxide as a nonionic surfactant. 12 ~C 15 Alcohol, available from Shell cC 11 ~ 13 LAS d HCO available from Nidera BV e Sodium cumene sulfonate f Ethoxylated or ethoxylated and propoxylated polyethyleneimine (PEI) polymers available from BASF g Solution of Brightener 49 in a nonionic surfactant available from BASF. The Brightener 49 solution contains 7.56 wt% Brightener 49 and 39.5% C ethoxylated with an average of 7 moles of ethylene oxide (i.e., normal range EO7). 12 ~C 15 It contains alcohol and, so by adding 0.1% Brightener 49, 0.52% of regular EO7 is introduced.

[0090] Example 2: Comparative study showing significant reduction in viscosity by replacing conventional nonionic surfactants with preferred nonionic surfactants Four sample liquid laundry detergent compositions were prepared containing the ingredients shown in Table 3 below. Samples 7-10 contain the same ingredients except for the different nonionic surfactants. In particular, Sample 7 contains 12.7% nonionic surfactant with a normal range EO7, Sample 8 contains 6.35% nonionic surfactant with a normal range EO7 and 6.35% nonionic surfactant with a normal range EO9, Sample 9 contains 12.7% nonionic surfactant with a normal range EO9, and Sample 10 contains 12.7% nonionic surfactant with a narrow range EO9.

[0091] The viscosities (HS) of Samples 7-10 were measured by using a Brookfield instrument according to Test 1 above. The results shown in Table 3 indicate that the replacement of the conventional nonionic surfactant (plain EO7) with the preferred nonionic surfactants in the liquid detergent compositions of the present application results in a significant reduction in viscosity, which is desirable to consumers. In particular, plain EO9 performs better in terms of viscosity than plain EO7, and the narrow range EO9 performs even better than plain EO9.

[0092] [Table 3] a Defoaming material available from SIXIN (Jiangsu SIXIN Scientific Technological Application Research Institute Co., Ltd), which is a mixture containing polydimethylsilicone (PDMS), silica, polyether-modified polydimethylsiloxane, and polyether. b Neodol® 25-7 is a C ethoxylated with an average of 7 moles of ethylene oxide as a nonionic surfactant. 12 ~C 15 Alcohol, available from Shell c Neodol® 25-9 is a C ethoxylated with an average of 9 moles of ethylene oxide as a nonionic surfactant. 12 ~C 15 Alcohol, available from Shell d Ziegler NI EO9 is a C ethoxylated nonionic surfactant with an average of 9 moles of ethylene oxide. 12 ~C 15 Alcohol, available from Shell eC 11 ~ 13 LAS f HCO available from Nidera BV g Ethoxylated or ethoxylated and propoxylated polyethyleneimine (PEI) polymers available from BASF h Solution of Brightener 49 in a nonionic surfactant available from BASF. The Brightener 49 solution contains 7.56 wt% Brightener 49 and 39.5% C ethoxylated with an average of 7 moles of ethylene oxide (i.e., normal range EO7). 12 ~C 15 It contains alcohol and, so by adding 0.1% Brightener 49, 0.52% of regular EO7 is introduced.

[0093] Dimensions and values ​​disclosed herein should not be understood as being strictly limited to the exact numerical values ​​recited. Instead, unless otherwise indicated, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as "40 mm" is intended to mean "about 40 mm."

[0094] All documents cited herein, including any cross-referenced or related patents or applications, and any patent applications or patents to which this application claims priority or benefit, are incorporated herein by reference in their entirety, unless expressly excluded or limited. The citation of any document is not an admission that it is prior art with respect to any invention disclosed or claimed herein, or that it alone, or in combination with any other reference, teaches, suggests, or discloses such invention. Furthermore, if any meaning or definition of a term in this document conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to that term in this document shall control.

[0095] While particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended in the appended claims to cover all such changes and modifications that are within the scope of this invention.

Claims

1. 1. A liquid detergent composition comprising: a) 0.03% to 5% by weight of the composition of an antifoaming agent; b) 3% to 30% by weight of the composition of a nonionic surfactant which is an alcohol ethoxylate of formula (I). 【Chemistry 1】 (wherein R is a saturated or unsaturated, linear or branched C ８ ~C ２０ and wherein greater than 90% of n are 0≦n≦15, the average value of n is 4 to 14, and less than about 20% by weight of the alcohol ethoxylates are ethoxylates having n less than 8.

2. 2. The liquid detergent composition of claim 1, wherein the alcohol ethoxylates of formula (I) include those having an average value of n from 5 to 10.

3. 2. The liquid detergent composition of claim 1, wherein the alcohol ethoxylate of formula (I) comprises from 10% to 20% by weight of the alcohol ethoxylates are ethoxylates where n is 8.

4. 2. The liquid detergent composition of claim 1, wherein in said alcohol ethoxylates of formula (I), less than about 10% by weight of said alcohol ethoxylates are ethoxylates having n less than 7.

5. 2. The liquid detergent composition of claim 1, wherein in the alcohol ethoxylates of formula (I), the average value of n is from 8 to 11.

6. 2. The liquid detergent composition of claim 1, wherein the alcohol ethoxylates of formula (I) comprise from about 30% to about 55% by weight of the alcohol ethoxylates are ethoxylates where n is 9-10.

7. 2. The liquid detergent composition of claim 1, wherein the alcohol ethoxylates of formula (I) comprise greater than 80% by weight of the alcohol ethoxylates having n greater than 7.

8. 10. The liquid detergent composition of claim 1, wherein the alcohol ethoxylate is derived from a natural alcohol, a synthetic alcohol, or a mixture thereof.

9. 2. A liquid detergent composition according to claim 1, wherein the non-ionic surfactant is present in an amount in the range from 3wt% to 25wt%, preferably from 3.5wt% to 20wt%, more preferably from 4wt% to 18wt%, even more preferably from 4.5wt% to 16wt%, most preferably from 5wt% to 15wt% of the composition.

10. The liquid detergent composition comprises: A liquid detergent composition according to any one of claims 1 to 8, further comprising c) from 0.01% to 10% by weight of the composition of a crystalline, hydroxyl-containing stabilising agent.

11. said stabiliser being present in an amount ranging from 0.01% to 9%, preferably from 0.02% to 8%, more preferably from 0.03% to 5%, even more preferably from 0.05% to 3%, and most preferably from 0.06% to 2% by weight of the composition; Preferably, the stabilizing agent is selected from the group consisting of microcrystalline cellulose or a derivative thereof, castor oil or a derivative thereof, hydrogenated castor oil or a derivative thereof, and any combination thereof; A liquid detergent composition according to claim 9, wherein the stabiliser is more preferably microcrystalline cellulose and / or hydrogenated castor oil.

12. said antifoaming agent is present in an amount ranging from 0.04% to 3%, preferably from 0.08% to 2%, more preferably from 0.1% to 1% by weight of said composition; Preferably, the antifoaming agent comprises a silicone, a silica, or any mixture thereof; More preferably, the liquid detergent composition according to any one of claims 1 to 11, wherein the antifoaming agent comprises polydimethylsiloxane (PDMS).

13. The liquid detergent composition comprises: d) 0.01% to 3%, preferably 0.01% to 1%, more preferably 0.02% to 0.5%, and most preferably 0.03% to 0.3% by weight of the composition of an antibacterial agent, preferably an antibacterial agent selected from the group consisting of diphenyl ether and combinations thereof; e) 4.5% to 40%, preferably 5.5% to 30%, more preferably 6% to 20%, most preferably 6.5% to 18% by weight of the composition of an organic acid, preferably selected from the group consisting of citric acid, lactic acid, tartaric acid, malic acid and any combination thereof; and / or f) from 2% to 35%, preferably from 3% to 30%, more preferably from 4% to 25%, most preferably from 5% to 20% by weight of the composition of an anionic surfactant, preferably C ６ ~C ２０ Linear alkylbenzene sulfonate (LAS), C ６ ~C ２０ Alkyl sulfate (AS), C ６ ~C ２０ Alkyl alkoxy sulfate (AAS), C ６ ~C ２０ Methyl ester sulfonate (MES), C ６ ~C ２０ 13. The liquid detergent composition of any one of claims 1 to 12, further comprising an anionic surfactant selected from the group consisting of alkyl ether carboxylates (AECs), and any combination thereof.

14. The composition comprises: a) 0.1% to 0.5% by weight of the composition of the defoamer, the defoamer comprising polydimethylsiloxane (PDMS); b) 10% to 15% by weight of the composition of said alcohol ethoxylate of formula (I), c) 0.06% to 2% by weight of the composition of hydrogenated castor oil; d) 0.03% to 0.3% by weight of the composition of 4-4'-dichloro-2-hydroxydiphenyl ether; e) 6.5% to 18% citric acid by weight of the composition, and / or f) 5% to 20% by weight of the composition ６ ~C ２０ 10. The liquid detergent composition of claim 1 comprising a linear alkyl benzene sulfonate (LAS).

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