Liquid detergent composition

Abstract

A liquid detergent composition may comprise a first surfactant that is a mixture of surfactant isomers of Formula 1 and a surfactant of Formula 2, where about 50% to about 100% by weight of the first surfactant is the isomer having m+n=11, about 25% to about 50% of the mixture of surfactant isomers of Formula 1 have n=0, and about 0.001% to about 25% by weight of the first surfactant is a surfactant of Formula 2, where X is a hydrophilic moiety, and a second surfactant that comprises a linear alkyl benzene sulfonate. [Formula 1] TIFF2024544941000020.tif38150

Description

[Technical Field] 【0001】 A liquid detergent composition comprising a first surfactant and a second surfactant, wherein the first surfactant is a branched alkyl sulfate and the second surfactant is a linear alkylbenzene sulfonate. [Background technology] 【0002】 Liquid detergent compositions are routinely used to clean substrates such as fabrics. The formulation of a liquid detergent composition is, above all, a balance between its ability to adequately clean the target substrate without damaging it. Therefore, it is beneficial to find and utilize efficient cleaning surfactants that can be used at a level that does not potentially damage the target substrate. Thus, there is a need for cleaning surfactants that are efficient and, preferably, harmless to the target substrate. [Overview of the Initiative] [Means for solving the problem] 【0003】 This specification provides, for example, a liquid detergent composition comprising a) a first surfactant essentially consisting of a mixture of surfactant isomers of formula 1 and a surfactant of formula 2 in an amount of about 1% to about 30% by weight of the composition. 【0004】 [ka] Approximately 50% to 100% by weight of the first surfactant is an isomer having m+n=11. Surfactant isomers of formula 1 Approximately 25% of the mixture weight %~about 50 weight % However, n=0 Surfactant isomers of Equation 1 And,From about 0.001% to about 25% by weight of the first surfactant is a surfactant of formula 2, wherein X is a hydrophilic moiety, the first surfactant, and b) from about 1% to about 30% by weight of the composition, a second surfactant comprising a linear alkylbenzene sulfonate, and c) a detergent adjuvant, a liquid detergent composition is included. 【0005】 Also, herein, for example, a liquid detergent composition, a) a first surfactant consisting essentially of a mixture of surfactant isomers of formula 1 and a surfactant of formula 2, 【0006】 【Chemical formula】 From about 50% to about 100% by weight of the first surfactant is an isomer having m + n = 11, Surfactant isomers of formula 1 About 25 weight % to about 50 weight % However, n=0 Surfactant isomers of formula 1 And, From about 0.001% to about 25% by weight of the first surfactant is a surfactant of formula 2, wherein X is a hydrophilic moiety, the first surfactant, and b) C 10 ~C 13 A second surfactant comprising a linear alkylbenzene sulfonate, and the weight ratio of the first surfactant to the second surfactant is from about 5:1 to about 1:5, a liquid detergent composition is included. 【0007】 These and other embodiments are more fully described throughout this specification. 【Mode for Carrying Out the Invention】 【0008】 For liquid detergent compositions, the ultimate goal is to efficiently clean the target substrate, such as fabric. Cleaning efficiency leads to lower-cost and more sustainable products. Surfactants have long been used as cleaning tools, but not all surfactants are efficient cleaners; many are good at cleaning one type of stain but not another. Furthermore, the general belief is that the more surfactant a product contains, the better the cleaning. However, there are limitations to how much surfactant can be included in a given product due to cost, formulation incompatibility, and processing concerns. 【0009】 The inventors investigated whether it is possible to find a synergistic effect between certain surfactants that may help reduce the total amount of surfactant required to clean a substrate, result in better cleaning of the substrate, or both. The two surfactants investigated included an anionic linear alkylbenzene sulfonate and an anionic surfactant containing branched alkyl sulfates (a mixture of surfactant isomers of formula 1 and the surfactant of formula 2). 【0010】 [ka] Approximately 50% to 100% by weight of the first surfactant is an isomer having m+n=11. Surfactant isomers of formula 1 Approximately 25% of the mixture weight %~about 50 weight % However, n=0 Surfactant isomers of Equation 1 And, The first surfactant contained approximately 0.001% to 25% by weight of the surfactant of formula 2 (where X is the hydrophilic portion). 【0011】 To investigate whether a synergistic effect exists between these materials, a liquid detergent composition is prepared (comparative composition A). This composition is a liquid detergent chassis that does not contain either linear alkylbenzene sulfonate or branched alkyl sulfate. Comparative compositions B, D, and F are also prepared, which are liquid detergent chassis with added linear alkylbenzene sulfonate, and comparative compositions C, E, and G are liquid detergent chassis with added branched alkyl sulfate. Compositions 1 to 3 of the present invention are prepared using both linear alkylbenzene sulfonate and branched alkyl sulfate. The formulations for comparative compositions A to G and compositions 1 to 3 of the present invention are given in the following Examples section. 【0012】 The cleaning efficiency of each of the comparative compositions A to G will be tested. To do this, technical stain samples of CW120 cotton will be obtained. These stain samples include identifiable sebum (PCS132), black todd clay (GSRTBT001), burnt butter (GSRTBB001), Covergirl cosmetics (GSRTCGM001), ASTM dust sebum (PCS94), and dyed bacon tallow (GSRTBGD001), purchased from Accurate Product Development (Fairfield, OH). The stain samples will be run through a simulated washing cycle in a turgotometer along with comparative compositions A to G and one of compositions 1 to 3 of the present invention. The method for this is listed below in the section on the method called the stain removal index method. 【0013】 When searching for synergistic effects, we look for those that are greater than additive effects. Therefore, we individually examine the effect of each given material, the expected effect of using them together, and the actual effect of using them together. Cleaning efficiency is evaluated using a stain removal index calculated as follows: 【0014】 【number】 ΔE initial =Stain level before washing, standard L for unwashed stains and unwashed background fabric.* and a * and b * calculated from the difference in colorimetric measurements, ΔE washed = the stain level after washing, the standard L of the washed stain and the unwashed background fabric * a * and b * is calculated from the difference in colorimetric measurements. 【0015】 In addition, to account for the chassis (comparative composition A) and any benefits seen from the chassis, the values in Tables 1 - 3 are delta SRI. Delta SRI is calculated by subtracting the SRI of the chassis from the SRI of the composition in question. 【0016】 As seen in Table 1 below, the actual stain removal index of Composition 1 of the present invention (having 2.11% by weight each of linear alkylbenzene sulfonate and branched alkyl sulfate) is 0.5 delta SRI units higher than the result expected for discriminative sebum stains. This indicates a synergistic effect between linear alkylbenzene sulfonate and branched alkyl sulfate for stain removal, particularly against discriminative sebum. 【0017】 【Table 1】 【0018】 To determine whether synergistic effects exist at different surfactant concentrations, additional tests are completed at different levels of total surfactant. As seen in Tables 2 and 3 below, synergistic effects also exist at levels of 4.23 (Table 2) and 8.26 (Table 3) weight % of each of the compositions of linear alkylbenzene sulfonate and branched alkyl sulfate. For Composition 2 of the present invention, a synergistic cleaning effect is seen for stains including black todd clay, butterscotch, and cosmetics. For Composition 3 of the present invention, synergistic effects are seen with stains including, for example, dust sebum and bacon grease. 【0019】 【Table 2】 【0020】 [Table 3] 【0021】 Considering the synergistic effects observed between linear alkylbenzene sulfonates and branched alkyl sulfates, it is conceivable that liquid detergent formulations with lower total surfactant content may possess similar or better cleaning performance than liquid detergents with higher levels of total surfactant content that utilize different types of surfactants. This can provide additional formulation flexibility, cost reduction, and opportunities for more sustainable formulations. 【0022】 Liquid detergent composition The liquid detergent composition may comprise a first surfactant containing a branched alkyl sulfate and a second surfactant containing a linear alkylbenzene sulfonate. The liquid detergent composition may comprise about 5% to about 60% by weight of total surfactant. The liquid detergent composition may comprise about 5%, 6%, 7%, 8%, 9%, or 10% to about 8%, 9%, 10%, 12%, 14%, 16%, 18%, 20%, 22%, 24%, 26%, 28%, 30%, 32%, 34%, 36%, 38%, 40%, 45%, 50%, or any combination thereof of total surfactant. The weight ratio of the first surfactant to the second surfactant may be about 5:1 to about 1:5, about 3:1 to about 1:3, about 2:1 to about 1:2, or about 1:1. Liquid detergent compositions may also contain a water-like carrier, approximately 1% to 95%. A liquid detergent composition can be a laundry detergent composition. A liquid "laundry detergent composition" includes any composition capable of cleaning fabrics in a washing machine or by hand. Liquid laundry detergent compositions can be used in high-efficiency and standard washing machines, in addition to hand washing, for example, in a tub or basin. 【0023】 A liquid detergent composition may have a stain removal index (calculated above) higher than the combination of the stain removal index of a first reference composition containing a first surfactant and a second reference composition containing a second surfactant. The first reference composition does not contain the second surfactant, and the second reference composition does not contain the first surfactant. An example of a chassis that can be used to prepare the first and second reference compositions of Comparative Example A. In addition, a liquid detergent composition may have an actual stain removal index that is 0.5 units or more higher than its expected stain removal index. The actual stain removal index and the expected stain removal index can be calculated as described above. The stain removal index can be measured, for example, on a cotton sample. Stains used when evaluating the stain removal index may include identifiable sebum, black tod clay, burnt butter, cosmetics, dust sebum, or bacon grease. 【0024】 Branched alkyl sulfate The liquid detergent composition may contain a first surfactant comprising a branched alkyl sulfate in an amount of about 1% to about 30% by weight of the composition. The liquid detergent composition may also contain branched alkyl sulfate in an amount of about 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, or 10% to about 5%, 6%, 7%, 8%, 9%, 10%, 12%, 14%, 16%, 18%, 20%, 22%, 24%, 26%, 28%, or any combination thereof of the composition. The branched alkyl sulfate may include 2-alkyl branched alkyl alcohols. 2-alkyl branched alcohols are positional isomers in which the position of the hydroxymethyl group (consisting of a methylene crosslink (-CH2- unit) bonded to a hydroxy(-OH) group) on the carbon chain changes. Therefore, 2-alkyl branched alkyl alcohols generally consist of a mixture of positional isomers. Furthermore, it is well known that aliphatic alcohols such as 2-alkyl branched alcohols and surfactants are characterized by their chain length distribution. In other words, aliphatic alcohols and surfactants generally consist of a blend of molecules having different alkyl chain lengths (although it is possible to obtain single-chain-length pieces). In particular, the 2-alkyl primary alcohols described herein, which may have a specific alkyl chain length distribution and / or a specific proportion of a particular positional isomer, cannot be obtained by simply blending commercially available materials. Specifically, a distribution of surfactants with m+n=11 in a range of about 50% to about 100% by weight cannot be achieved by blending commercially available materials. 【0025】 The liquid detergent composition may contain a first surfactant, which essentially consists of a mixture of surfactant isomers of formula 1 and a surfactant of formula 2. 【0026】 [ka] Approximately 50% to 100% by weight of the first surfactant is an isomer having m+n=11. Surfactant isomers of formula 1 Approximately 25% of the mixture weight %~about 50 weight % However, n=0 Surfactant isomers of Equation 1 And, Approximately 0.001% to 25% by weight of the first surfactant is the surfactant of formula 2, where X is the hydrophilic portion. 【0027】 X can be neutralized with, for example, sodium hydroxide, potassium hydroxide, magnesium hydroxide, lithium hydroxide, calcium hydroxide, ammonium hydroxide, monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, diamine, polyamine, primary amine, secondary amine, tertiary amine, amine-containing surfactant, or a combination thereof. 【0028】 X is sulfate, alkoxylated alkyl sulfate, sulfonate, amine oxide, polyalkoxylate, polyhydroxy moiety, phosphate ester, glycerol sulfonate, polygluconate, polyphosphate ester, phosphonate, sulfosuccinate, sulfosaccharinate, polyalkoxylated carboxylate, glucamide, taurinate, sarcosinate, glycinate, isethionate, dialkanolamide, monoalkanolamide, monoalkanolamide sulfate, diglycolamide, diglycolamide sulfate, glycerol ester, glycerol The following can be selected from ester sulfates, glycerol ethers, glycerol ether sulfates, polyglycerol ethers, polyglycerol ether sulfates, sorbitan esters, polyalkoxylated sorbitan esters, ammonia alkanesulfonates, amidopropyl betaine, alkylated quaternary ammonium compounds, alkylated / polyhydroxyalkylated quaternary ammonium compounds, alkylated / polyhydroxylated oxypropyl quaternary ammonium compounds, imidazoline, 2-yl-succinate, sulfonated alkyl esters, sulfonated fatty acids, and mixtures thereof. 【0029】 The first surfactant may have surfactant isomers of formula 1 having n=1 in about 15% to about 40% of the mixture, for example, about 20% to about 40%, about 25% to about 35%, or about 30% to about 40%. The first surfactant may have surfactant isomers of formula 1 having n<3 in about 60% to about 90% of the mixture, for example, about 65% to about 85%, about 70% to about 90%, or about 80% to about 90%. The detergent composition may have the first surfactant having isomers m+n=11 in about 90% to about 100%, for example, about 95% to 100%. 【0030】 The first surfactant may contain approximately 15% to 40% by weight of the isomer of formula 1 with n=1, and approximately 5% to 20% by weight of the isomer of formula 1 with n=2. The first surfactant does not have to contain an isomer of formula 1 with n=6 or greater. The first surfactant may contain up to approximately 40% of the mixture of surfactant isomers of formula 1 with n>2. The first surfactant may contain up to approximately 25% of the mixture of surfactant isomers of formula 1 with n>2. The first surfactant may contain up to approximately 20% by weight of isomers of formula 2. 【0031】 impurities The process for producing the above-mentioned 2-alkyl primary alcohol-derived surfactant may generate various impurities and / or contaminants at different steps in the process. 【0032】 The starting C15 and C13 aldehydes, as well as the C14 and C12 olefin sources used in hydroformylation to produce the subsequent alcohols and corresponding surfactants used in the present invention, can only contain low levels of impurities in the starting C15 and C13 alcohols, and therefore impurities in the C15 and C13 alkyl sulfates. While not bound by theory, such impurities present in the C14 and C12 olefin feedstocks may include vinylidene olefins, branched olefins, paraffins, aromatic components, and low levels of olefins having chain lengths other than the intended 14 or 12 carbons. Branched and vinylidene olefins are typically present in C14 and C12 alpha-olefin sources at 5% or less. The impurities in the resulting C15 and C13 alcohols may include low levels, typically less than 5% by weight, preferably less than 1%, of linear and branched alcohols in the range of C10 to C17 alcohols, particularly C11 and C15 alcohols in the C13 alcohol, and particularly C13 and C17 alcohols in the C15 alcohol; low levels of branching at positions other than the 2-alkyl position resulting from branching and vinylidene olefins, typically less than about 5% by weight, preferably less than 2% by weight, of the alcohol mixture; paraffin and olefins, typically less than 1% by weight, preferably less than about 0.5%, of the alcohol mixture; and low levels of aldehydes having a carbonyl value typically less than 500 mg / kg, preferably less than about 200 mg / kg. These impurities in the alcohol may result in the formation of low levels of paraffin, linear and branched alkyl sulfates with a total number of carbon atoms other than C15 or C13, and alkyl sulfates with branches at positions other than the 2-alkyl position, where these branches are typically linear alkyl chains with 1 to 6 carbon atoms, although their length may vary. The hydroformylation process may also produce impurities such as linear and branched paraffin, residual olefins from incomplete hydroformylation, and esters, formates, and heavy fractions (dimers, trimers).Impurities that are not reduced to alcohol during the hydrogenation process can be removed by distillation during the final purification of the alcohol. 【0033】 Furthermore, it is well known that the process of sulfated aliphatic alcohols to obtain alkyl sulfate surfactants also results in various impurities. The exact nature of these impurities depends on the sulfated and neutralized conditions. However, generally speaking, impurities in the sulfated process include one or more inorganic salts, unreacted aliphatic alcohols, and olefins ("The Effect of Reaction By-Products on the Viscosities of Sodium Lauryl Sulfate Solutions," Journal of the American Oil Chemists' Society, Vol. 55, No. 12, pp. 909-913 (1978), CFPutnik and SEMcGuire). 【0034】 Alkoxylated impurities may include dialkyl ethers, polyalkylene glycol dialkyl ethers, olefins, and polyalkylene glycols. The impurities may also include catalysts or catalyst components used in various processes. 【0035】 Linear alkylbenzene sulfonate The liquid detergent composition may contain a second surfactant comprising a linear alkylbenzene sulfonate in an amount of about 1% to about 20% by weight of the composition. The alkyl group may contain about 9 to about 15 carbon atoms. Such linear alkylbenzene sulfonates are known as "LAS". The linear alkylbenzene sulfonate may have an average number of carbon atoms in the alkyl group of about 10 to 13, about 11 to about 12, or about 11.6 to about 12. The linear alkylbenzene sulfonate may have an average number of carbon atoms in the alkyl group of about 11.8 and may be abbreviated as C11.8 LAS. The alkylbenzene sulfonate may exist at least partially as an alkali metal salt, preferably a sodium salt, or an amine salt, such as an ethanolamine salt such as monoethanolamine salt. 【0036】 Suitable alkylbenzene sulfonates (LAS) can be obtained, and are preferably obtained, by sulfonating commercially available linear alkylbenzenes (LABs). Suitable LABs include low 2-phenyl LABs such as those supplied by Sasol under the trademark name Isochem® or by Petresa under the trademark name Petrelab®, while other suitable LABs include high 2-phenyl LABs such as those supplied by Sasol under the trademark name Hyblene®. Suitable anionic surfactants are alkylbenzene sulfonates obtained by the DETAL catalytic process or the DETAL-PLUS catalytic process, but other synthetic routes such as HF and other alkylation catalysts such as zeolite ZSM-4, ZSM-12, ZSM-20, ZSM-35, ZSM-48, ZSM-50, MCM-22, TMA offletite, TEA mordenite, clinoptilolite, mordenite, REY, and zeolite beta may also be preferred. In one embodiment, a magnesium salt of LAS is used. Preferably, the HLAS surfactant may be selected from alkylbenzenesulfonic acid, C10-16 alkylbenzenesulfonic acid, and more preferably from alkali metal salts or amine salts of C10-C14 alkylbenzenesulfonic acid. The LAS surfactant may contain more than 50% C12, preferably more than 60%, preferably more than 70%, and more preferably more than 75% C12. Preferably, the HLAS surfactant may be selected from alkylbenzenesulfonic acid and alkali metal salts of C10-16 alkylbenzenesulfonic acid, and the HLAS surfactant contains an even-to-odd carbon ratio of 3:2 to 99:1. 【0037】 Additional surfactants The liquid detergent composition may further contain additional surfactants. The additional surfactants may be present in a level of about 0.25% to about 25% by weight of the liquid detergent composition. The additional surfactants may be anionic, nonionic, cationic, zwitterionic, amphoteric, or a combination thereof. For example, the additional surfactant may be a combination of an alkyl sulfate and a nonionic surfactant, or a combination of an anionic surfactant and a nonionic surfactant containing an ethoxylated alcohol. The additional surfactants may be selected from alkylalkoxylated sulfate surfactants, ethoxylated alcohol nonionic surfactants, amine oxides, methyl ester sulfonates, glycolipid surfactants, alkyl polyglucoside surfactants, or combinations thereof. The additional surfactants may be selected from the group consisting of alkylalkoxylated sulfate surfactants, ethoxylated alcohol nonionic surfactants, amine oxide surfactants, and mixtures thereof. 【0038】 Additional surfactants may include alkylalkoxylated sulfate surfactants ("alkoxylated sulfate surfactants, AES"). An AES surfactant comprises multiple AES compounds, each AES compound containing an alkyl chain. The alkyl chain of a particular AES compound can be characterized by the total number of carbon atoms in the alkyl portion, also known as the alkyl chain length. A given amount of AES surfactant may contain a variety of AES compounds having chain lengths that fall within a certain proportion or distribution range. Thus, a given amount or sample of AES can be characterized by the distribution of AES compounds having a particular chain length, and / or the weight-average number of carbon atoms in the alkyl portion. 【0039】 Commercially available AES surfactants include AES compounds with a weight-average chain length of 12-15, known as C12-15 AES, or AES compounds with a chain length of 12-14, known as C12-14 AES. These AES surfactants may contain at least several AES compounds with a chain length of 15, but typically they also feature a relatively broad and diverse distribution of other chain lengths. 【0040】 Another AES surfactant suitable for use herein may contain a relatively high proportion of AES compounds having 15 carbon atoms in their alkyl chain ("C15 AES"). C15 AES may be desirable because the relatively long alkyl chain increases the hydrophobicity of the AES surfactant, thereby potentially resulting in improved stain removal, such as grease removal. The AES surfactant may contain about 40% by weight of C15 AES, or about 45% to about 70% by weight, or up to about 60% by weight of the AES surfactant. C15 AES may constitute the main part of the AES surfactant, meaning that there is a greater weight of C15 AES surfactant than any other single type of AES surfactant. C15 AES may constitute at least half, or even the majority, of the weight of the AES surfactant. 【0041】 AES surfactants may contain AES compounds having 14 carbon atoms in an alkyl chain ("C14 AES"), for example, at least about 1% by weight of C14 AES in the AES surfactant. AES surfactants may contain relatively limited amounts of C14 AES. For example, an AES surfactant may contain about 30% by weight or less, or about 25% by weight or less, or about 20% by weight or less, or about 15% by weight or less, or about 10% by weight or less of C14 AES in the AES surfactant. If a composition or surfactant system contains a relatively high proportion of C15 AES, it may be desirable to limit the amount of C14 AES, for example, for stability reasons. 【0042】 AES surfactants may contain AES compounds having 13 carbon atoms in their alkyl chain ("C13 AES"). C13 AES may be desirable because the relatively short alkyl chain reduces the relative hydrophobicity of the AES surfactant, thereby allowing the AES surfactant to remove a variety of contaminants and / or be relatively more physically stable than more hydrophobic AES surfactants. An AES surfactant may contain C13 AES in up to about 15% by weight, or about 20% by weight, or about 25% to about 50% by weight, or about 40% by weight, or about 35% by weight, preferably about 15% to about 35% by weight of the AES surfactant. C13 AES may be the most or second most abundant AES compound in the AES surfactant; for example, an AES surfactant may contain the most C15 AES and C13 AES, both of which are present in relatively high concentrations compared to AES of other chain lengths. 【0043】 AES surfactants may contain AES compounds having 12 carbon atoms in an alkyl chain ("C12 AES"). AES surfactants may contain at least about 1% by weight, or at least about 3% by weight, or at least about 5% by weight, or at least about 10% by weight of C12 AES. AES surfactants may contain about 20% by weight or less, or about 15% by weight or less, or about 12% by weight or less, or about 10% by weight or less, or about 5% by weight or less of C12 AES. AES surfactants may contain about 1% by weight, or from about 3% by weight to about 20% by weight, or from about 15% by weight, preferably about 3% by weight to about 15% by weight of C12 AES. C12 AES may be desirable, for example, to counteract the hydrophobicity of C15 AES, resulting in a broader cleaning profile and / or a better stability profile. 【0044】 The AES surfactant may contain, in addition to the amount of the C15 surfactant described above, at least 1% by weight of each of the C12 AES, C13 AES, and C14 AES surfactants. The AES surfactant of this disclosure may contain about 30% to about 60% by weight of the AES surfactant, preferably a mixture thereof, of C12 AES, C13 AES, C14 AES, or a mixture thereof. 【0045】 The AES surfactant may comprise about 1% to about 20% by weight of C12 AES, about 25% to about 50% by weight of C13 AES, about 1% to about 10% by weight of C14 AES, and about 45% to about 60% by weight of C15 AES (each weight % is by weight of the AES surfactant), and may be characterized by an alkyl chain length having an average molecular weight of about 205 to about 220, preferably about 208 to about 218, provided that the weight % provided can total about 95% to about 100% by weight. 【0046】 AES surfactants may contain AES compounds having 16 carbon atoms in the alkyl chain ("C16 AES"). For example, the amount of C16 present may be limited because longer chain lengths may cause phase instability. The AES surfactants of this disclosure may contain about 0.1% to less than 5% by weight of the AES surfactant, or less than 3% by weight, or less than 1.5% by weight, or less than 1% by weight of C16 AES. 【0047】 AES surfactants can be characterized by the weight-average molecular weight of the chain length of the AES compounds in their distribution. Overall, AES surfactants may be characterized by a lower-than-expected weight-average molecular weight chain length, considering the relatively high proportion of C15 AES. 【0048】 The weight-average molecular weight of a chain can be determined by finding the weight-average molecular weight of the aliphatic alcohol consisting of an alkyl chain and a hydroxyl group. Calculating the molecular weight of a chain in this manner offers several advantages. For example, AES surfactants are typically synthesized from such aliphatic alcohols that function as raw materials before being subjected to alkoxylation (e.g., ethoxylation) and sulfation to reach the final AES compound. Therefore, relevant information regarding the aliphatic alcohol raw materials is typically available from the raw material supplier and / or the AES manufacturer. In addition, reporting the molecular weight based on the aliphatic alcohol containing the alkyl chain, rather than the molecular weight of the AES surfactant itself, helps eliminate the uncertainty arising from variable alkoxylation. For example, a C15 AES material may contain several molecules with 1 mole of ethoxylation, as well as other molecules with 2 and / or 3 moles of ethoxylation. 【0049】 For example, the molecular weight of the alkyl chain of a C15 AES compound is given by the following empirical formula: C 15 H 31 It is based on C15 aliphatic alcohols that may contain OH groups. Such C15 aliphatic alcohols have a molecular weight of approximately 228 daltons. For convenience, Table 4 shows the molecular weights of some exemplary aliphatic alcohols. 【0050】 [Table 4] 【0051】 AES surfactants may be characterized by chain lengths having a weight-average molecular weight of about 200, or about 205, or about 208, or about 210, or about 211, or about 214 to about 220, or about 218, or about 215 daltons, where the molecular weight of a particular alkyl chain is based on the molecular weight of the aliphatic alcohol containing the alkyl chain (i.e., the aliphatic alcohol consisting of an alkyl chain and a hydroxyl group). AES surfactants may be characterized by chain lengths having a weight-average molecular weight of about 200 to about 220, or about 210 to about 220, or about 211 to about 220, or about 211 to about 218 daltons. AES surfactants may be characterized by chain lengths having a weight-average molecular weight of about 208 to 215 daltons or less. AES, characterized by a relatively low weight-average molecular weight (e.g., 208-215 Daltons) and chain length, may be particularly preferred in detergent compositions containing a relatively large amount of surfactant (e.g., more than 20% by weight) because it promotes improved physical stability. 【0052】 AES surfactants can also be characterized by their degree of ethoxylation. Within a population of AES compounds, AES molecules can have a variety of degrees of ethoxylation. Therefore, a given amount or sample of AES can also be characterized by its weight-average degree of ethoxylation, which is reported as the number of moles of ethoxy groups (-O-CH2-CH2) per mole of AES. The AES surfactants of this disclosure may be characterized by a weight-average degree of ethoxylation of about 0.5 to about 5, or about 1 to about 3, or about 1.5 to about 2.5. 【0053】 AES may contain at least some unethoxylated alkyl sulfate (alkyl sulfate, "AS") surfactants. Unethoxylated AS may be present as a result of incomplete reactions during the ethoxylation process and / or added as a separate component. For the purposes of this disclosure, (unethoxylated) AS is considered part of the AES surfactant when determining its concentration, chain length, molecular weight, and / or degree of ethoxylation. 【0054】 AES surfactants may include AES compounds having linear alkyl chains, AES compounds having branched alkyl chains, or mixtures thereof. AES surfactants may include AES surfactants branched at the C2 position, where C2 is the second carbon from the ethoxysulfate head group (i.e., the carbon adjacent to the ethoxysulfate head group is at the C1 position). AES surfactants may contain about 10% to about 30% by weight of AES surfactants that are branched at the C2 position. Branched alkyl chains can improve and / or broaden the cleaning profile of AES surfactants. Linear alkyl portions of AES compounds may also be preferred. At least about 50% by weight, or at least about 75% by weight, or at least about 90% by weight, or at least about 95% by weight, or about 100% by weight of AES compounds may have alkyl chains that are linear alkyl chains. AES may comprise a mixture of C15 AES, where at least 60% by weight of C15 AES is linear and at least 10% by weight of C15 AES is branched, preferably at the C2 position. AES may comprise a mixture of C13 AES, where at least 60% by weight of C13 AES is linear and at least 10% by weight of C13 AES is branched, preferably at the C2 position. 【0055】 As described above, AES compounds are typically produced by sulfating ethoxylated aliphatic alcohols. First, an aliphatic alcohol may be provided and then ethoxylated according to known methods. Thus, an AES compound, or at least the alkyl chain of an AES compound, can be described in terms of its source of origin, e.g., oil or aliphatic alcohol. The AES compounds of this disclosure may include alkyl chains derived from non-petroleum sources, preferably natural sources. The AES of this disclosure may include mixtures of AES containing naturally derived alkyl chains and AES containing alkyl chains of synthetically derived (e.g., petroleum-derived) AES, such mixtures may be useful in considering supply chain variability, disruption, and / or price fluctuations, for example, so that shortages of one type of AES can be back-filled by another type. 【0056】 Natural sources include plant or animal sources, preferably oils derived from plants. Typical non-limiting examples of vegetable oils include canola oil, rapeseed oil, coconut oil, corn oil, cottonseed oil, olive oil, palm oil, peanut oil, safflower oil, sesame oil, soybean oil, sunflower oil, linseed oil, palm kernel oil, tili oil, jatropha oil, mustard oil, tea berry oil, camellia oil, castor oil, or mixtures thereof. Suitable feedstock oils typically include metathesis oils formed by a metathesis reaction in the presence of a suitable metathesis catalyst. The alkyl portion may be derived from coconut oil, palm kernel oil, or a mixture thereof, preferably coconut oil, palm kernel oil, or a mixture thereof. Such origins are desirable for environmental and / or sustainability reasons because they do not depend on fossil fuels. Furthermore, the alkyl chains of AES compounds derived from natural sources typically contain an even number of carbon atoms. 【0057】 Other sources of alkyl chains (e.g., starting alcohols) may include commercially available alcohols, such as those sold by Shell (e.g., under the trademark name Neodol(trademark), e.g., Neodol(trademark) 23, Neodol(trademark) 3, Neodol(trademark) 45, and / or Neodol(trademark) 5), and / or those sold by Sasol (e.g., Lial(trademark), Isalchem(trademark), Safol(trademark), etc.). 【0058】 The AES does not have to be derived from the Fischer-Tropsch process. The AES in this disclosure may be obtained from the well-known Shell-modified oxo process. The AES in this disclosure may include an AES obtained from the Ziegler process. 【0059】 AES can exist in acid form, salt form (e.g., neutralized), or mixtures thereof. AES in salt form may be an alkali metal salt, preferably a sodium salt, ammonium salt, or alkanolamine salt. 【0060】 Additional surfactants may include alkyl sulfates. Alkyl sulfates may include sodium lauryl sulfate, ammonium lauryl sulfate, or a combination thereof. 【0061】 Additional surfactants may include amine oxide surfactants. Preferred amine oxides are alkyldimethylamine oxide or alkylamidopropyldimethylamine oxide, more preferably alkyldimethylamine oxide, and especially cocodimethylamine oxide. Amine oxides may have linear or medium-chain branched alkyl moieties. Typical linear amine oxides include water-soluble amine oxides containing one R1 C8-18 alkyl moiety and two R2 and R3 moieties selected from the group consisting of C1-3 alkyl groups and C1-3 hydroxyalkyl groups. Preferably, the amine oxide is characterized by the formula R1-N(R2)(R3)O, where R1 is a C8-18 alkyl group and R2 and R3 are selected from the group consisting of methyl, ethyl, propyl, isopropyl, 2-hydroxyethyl, 2-hydroxypropyl, and 3-hydroxypropyl. Examples of linear amine oxide surfactants include linear C10-C18 alkyldimethylamine oxide and linear C8-C12 alkoxyethyl dihydroxyethylamine oxide. Preferred amine oxides include linear C10, linear C10-C12, and linear C12-C14 alkyldimethylamine oxides. As used herein, “medium-chain branched” means that the amine oxide has one alkyl moiety having n1 carbon atoms, and one alkyl branch in this alkyl moiety has n2 carbon atoms. The alkyl branch is located on the nitrogen to alpha carbon on the alkyl moiety. This type of branching of amine oxide is also known in the art as internal amine oxide. The compositions of this disclosure may contain amine oxide in an amount of about 0.1% to about 5% by weight, or about 3% by weight, or about 1% by weight of the composition. 【0062】 The additional surfactant may include a nonionic surfactant. The nonionic surfactant may be an ethoxylated alcohol. The nonionic surfactant has the formula R(OC2H4) nThe formula may contain an OH group, where R is selected from the group consisting of aliphatic hydrocarbon radicals containing about 8 to about 16 carbon atoms, and the average value of n is about 5 to about 15. For example, the nonionic surfactant may be selected from ethoxylated alcohols having an average of about 12 to 14 carbon atoms in the alcohol (alkyl portion) and an average degree of ethoxylation of about 7 to 9 moles of ethylene oxide per mole of alcohol. 【0063】 An additional non-restrictive example is the formula R(OC2H4) n Ethoxylated alkylphenols of OH (wherein the formula R contains an alkylphenyl radical with an alkyl group containing approximately 8 to approximately 12 carbon atoms and an average n value of approximately 5 to approximately 15), NEODOL® nonionic surfactants manufactured by Shell, etc. 12 ~C 18 Alkyl ethoxylate; C 14 ~C 22 Medium-chain branched alcohol; C 14 ~C 22 Medium-chain branched alkyl ethoxylate, BAE x Examples include (wherein x is between 1 and 30). The nonionic ethoxylated alcohol surfactants of this specification may further contain residual alkoxylated catalysts, which can be considered as residues or impurities from the reaction. They may further contain various impurities or by-products of the alkoxylated reaction. The impurities may vary depending on the catalyst used and the reaction conditions. Examples of impurities include alkyl ethers, such as dialkyl ethers such as didodecyl ether, and glycols, such as diethylene glycol, triethylene glycol, pentaethylene glycol, and other polyethylene glycols. 【0064】 Nonionic ethoxylated alcohols can be a narrow range of ethoxylated alcohols. The narrow range of ethoxylated alcohols is represented by the following general formula (I): 【0065】 [ka] (In the formula, R is saturated or unsaturated, linear or branched C8-C) 20 Selected from alkyl groups, more than 90% of n may have n=0 ≤ n ≤ 15. In addition, the mean value of n can be about 6 to about 10, with less than about 10% by weight of the alcohol ethoxylate being ethoxylates with n<7, and 10% to about 20% by weight of the alcohol ethoxylate being ethoxylates with n=8. 【0066】 The composition may contain approximately 10 average values ​​of n. The composition may have the following ranges for each of the following n: n=0 is up to 5%, n=1, 2, 3, 4, 5 are each up to 2%, n=6 is up to 4%, n=7 is up to 10%, n=8 is 12% to 20%, n=9 is 15% to 25%, n=10 is 15% to 30%, n=11 is 10% to 20%, n=12 is up to 10%, and n>12 is up to 10%. The composition may also have n between 9 and 10 at 30% to 70%. The composition may also have n between 8 and 11 at more than 50% of its composition. 【0067】 The alcohol ethoxylates described herein are typically not single compounds as suggested by their general formula (I), but rather alcohol ethoxylates comprise mixtures of several congeners having varying polyalkylene oxide chain lengths and molecular weights. Among the congeners, those with a number of total alkylene oxide units per mole of alcohol that is close to the most dominant alkylene oxide adduct are desirable, while congeners with a number of total alkylene oxide units that is much less or much more than that of the most dominant alkylene oxide adduct are less desirable. In other words, “narrow range” or “peaked” alkoxylated alcohol compositions are desirable. “Narrow range” or “peaked” alkoxylated alcohol compositions refer to alkoxylated alcohol compositions with a narrow distribution of the number of alkylene oxide addition moles. 【0068】 Alkoxylated alcohol compositions with a "narrow range" or "peaked" distribution may be desirable for selected applications. Congeners within the distribution range of the selected purpose may have an appropriate lipophilic-hydrophilic balance for the selected application. For example, in the case of an ethoxylated alcohol product containing an average ratio of 5 ethylene oxide (EO) units per molecule, congeners with the desired lipophilic-hydrophilic balance may be in the range of 2EO to 9EO. Congeners with shorter EO chain lengths (<2EO) or longer EO chain lengths (>9EO) may be too lipophilic or too hydrophilic for applications where surfactants with an α=5 EO / alcohol ratio are typically selected, thus being undesirable for applications where such longer or shorter congeners utilize this product. Therefore, it is advantageous to develop alkoxylated alcohols with a peaked distribution. 【0069】 The narrow range of alkoxylated alcohol compositions of this disclosure may have an average ethoxylation degree in the range of about 0 to about 15, for example, about 4 to about 14, about 5 to 10, about 8 to 11, and about 6 to 9. The narrow range of alkoxylated alcohol compositions of this disclosure may have an average ethoxylation degree of 10. The narrow range of alkoxylated alcohol compositions of this disclosure may have an average ethoxylation degree of 9. The narrow range of alkoxylated alcohol compositions of this disclosure may have an average ethoxylation degree of 5. 【0070】 Non-limiting examples of cationic surfactants include quaternary ammonium surfactants, which may have 26 or fewer carbon atoms, such as alkoxylate quaternary ammonium (AQA) surfactants; dimethylhydroxyethyl quaternary ammonium surfactants; dimethylhydroxyethyl laurylammonium chloride; polyamine cationic surfactants; cationic ester surfactants; and amino surfactants, such as amidopropyldimethylamine (APA). The compositions of this disclosure do not have to substantially contain cationic surfactants and / or surfactants that become cationic at pH less than 7 or pH less than 6, because cationic surfactants may negatively interact with other components such as anionic surfactants. 【0071】 Examples of zwitterionic surfactants include secondary and tertiary amine derivatives, heterocyclic secondary and tertiary amine derivatives, or derivatives of quaternary ammonium compounds, quaternary phosphonium compounds, or tertiary sulfonium compounds. Zwitterionic surfactants include betaines containing alkyldimethyl betaine and cocodimethylamidopropyl betaine, as well as C8-C 18 (For example, C 12 ~C 18 ) Amine oxide, and N-alkyl-N,N-dimethylamino-1-propanesulfonate (alkyl group is C8~C 18 or C 10 ~C 14 It may contain sulfo and hydroxybetaines such as (or may contain) 【0072】 Detergent auxiliary Liquid detergent compositions may contain one or more auxiliary components, for example, at levels ranging from about 0.1% to about 50%. Examples of auxiliary components include: color care agents; organic solvents; cosmetic dyes; color dyes; leuco dyes; opacifying agents such as those marketed under the Acusol brand name; glossing agents including FWA49, FWA15, and FWA36; dye transfer inhibitors including PVNO, PVP, and PVPVI dye transfer inhibitors; builders including citric acid and fatty acids; chelating agents; enzymes; fragrance capsules; preservatives; antioxidants such as potassium sulfite or potassium bisulfite, and those marketed under the brand name Ralox; and Tinosan, available from BASF. Antibacterial and antiviral agents including 4,4'-dichloro-2-hydroxydiphenyl ether such as HP100; anti-mite active substances such as benzyl benzoate; structuring agents including hydrogenated castor oil; silicone-based defoaming materials; inorganic electrolytes such as sodium chloride, potassium chloride, magnesium chloride, and calcium chloride, and related sodium sulfate, potassium sulfate, magnesium sulfate, and calcium sulfate salts; and organic electrolytes such as sodium, potassium, magnesium, and calcium salts of carbonates, bicarbonates, and carboxylates such as formate, citrate, and acetate; sodium hydroxide, hydrogen chloride, Examples include pH adjusters containing alkanolamines, including monoethanolamine, diethanolamine, triethanolamine, and monoisopropanolamine; probiotics; sanitizing agents; quaternary ammonium salts such as zinc ricinoleate, thymol, and Bardac®; polyethyleneimines (such as Lupasol® from BASF) and their zinc complexes; silver and silver compounds; cationic biocides including octyldecyldimethylammonium chloride; dioctyldimethylammonium chloride; didecyldimethylammonium chloride; dispersants; cleaning polymers; glucans; or mixtures thereof. For example, detergent auxiliaries include enzymes, enzyme stabilizers, builders, colorants, stain inhibitors, bleaches, or combinations thereof. 【0073】 Organic solvents may include alcohols and / or polyols. For example, organic solvents may include ethanol, propanol, isopropanol, sugar alcohols, glycols, glycol ethers, or combinations thereof. Organic solvents may include polyethylene glycol, especially low molecular weight polyethylene glycols such as PEG 200 and PEG 400; diethylene glycol; glycerol; 1,2-propanediol; polypropylene glycols including dipropylene glycol and tripropylene glycol, and low molecular weight polypropylene glycols such as PPG400; or mixtures thereof. Chelating agents may include, for example, EDDS, HEDP, GLDA, DTPA, DTPMP, DETA, EDTA, MGDA, or mixtures thereof. Chelating agents may be biodegradable. Examples of biodegradable chelating agents include NTA, IDS, EDDG, EDDM, HIDS, HEIDA, HEDTA, DETA, or combinations thereof. 【0074】 The enzymes may include, for example, proteases, amylases, cellulases, mannanases, lipases, xyloglucanases, pectin lyases, nuclease enzymes, or mixtures thereof. 【0075】 Examples of cleaning polymers include those that can help clean stains or dirt from clothing and / or prevent these stains from re-adhering to clothing during washing. Examples include optionally modified carboxymethylcellulose, modified polyglucans, poly(vinylpyrrolidone), poly(ethylene glycol), poly(vinyl alcohol), poly(vinylpyridine-N-oxide), poly(vinylimidazole), polycarboxylates such as polyacrylate, maleic acid / acrylic acid copolymers, and lauryl methacrylate / acrylic acid copolymers. 【0076】 The composition may comprise one or more amphiphilic cleansing polymers. Such polymers have a balanced combination of hydrophilic and hydrophobic properties to remove grease particles from fabrics and surfaces. Suitable amphiphilic alkoxylated grease cleansing polymers comprise a core structure and a plurality of alkoxylate groups bonded to the core structure. These may comprise alkoxylated polyalkyleneimines, particularly ethoxylated polyethyleneimines, or polyethyleneimines having an inner polyethylene oxide block and an outer polypropylene oxide block. Typically, these can be incorporated into the composition of the present invention in amounts of 0.005% to 10% by weight, generally 0.5% to 8% by weight. 【0077】 water The detergent composition may also contain water. Water may be present at a level of about 5% to about 95% by weight of the composition. 【0078】 pH The detergent composition may have a pH of about 5.0 to about 12, preferably 6.0 to 10.0, and more preferably 8.0 to 10, and the pH of the detergent composition is measured as a 10% dilution in desalinated water at 20°C. 【0079】 viscosity Liquid detergent compositions may be in the form of aqueous solutions, homogeneous dispersions, or suspensions. Such solutions, dispersions, or suspensions have acceptable phase stability. Liquid detergent compositions are available at 1 to 1500 centipoise (1 to 1500 mPa) at 20s⁻¹ and 21°C. * s), more preferably 100-1000 cmpoise (100-1000 mPa) * s), most preferably 200-500 centipoise (200-500 mPa) *It may have a viscosity of s). Viscosity can be measured by conventional methods. Viscosity may also be measured using an AR550 rheometer manufactured by TA instruments, which uses a plate steel spindle with a diameter of 40 mm and a gap size of 500 μm. The high shear viscosity at 20 s⁻¹ and the low shear viscosity at 0.05 s⁻¹ can be obtained from a logarithmic shear rate sweep of 0.1 s⁻¹ to 25 s⁻¹ for 3 minutes at 21°C. The preferred rheology described herein can be obtained by using an internal structural agent together with the detergent component or by using an external rheology modifier. More preferably, the laundry care composition, e.g., liquid detergent composition, has a viscosity at high shear rates of about 100 centipoise to 1500 centipoise, more preferably 100 to 1000 cps. 【0080】 Preparation of composition Liquid compositions can be prepared by combining their components in any convenient order and mixing, for example, stirring, the resulting combination of components to form a phase-stable liquid laundry care composition. In the process of preparing such a composition, a liquid matrix can be formed containing at least the majority, or even substantially all, of the liquid components, such as a nonionic surfactant, a non-surfactant liquid carrier, and other optionally selected liquid components, and the liquid components are thoroughly mixed by applying shear stirring to this combination of liquids. For example, high-speed stirring with a mechanical stirrer can be useful. While maintaining shear stirring, substantially all of any anionic surfactant and components in solid form can be added. The stirring of the mixture can be continued and, if necessary, increased to form a solution or homogeneous dispersion of insoluble solid particles in the liquid phase. After some or all of the solid-form substances have been added to this stirred mixture, particles of any enzymatic substances to be included, such as enzyme prills, can be incorporated. As a variation of the composition preparation procedure described above, one or more solid components may be added to the stirred mixture as a solution or slurry of particles pre-mixed with one or more trace amounts of liquid components. After all the composition components have been added, the mixture is stirred for a sufficient amount of time to form a composition having the required viscosity and phase stability. In most cases, this involves stirring for a period of about 30 to 60 minutes. 【0081】 combination 1. A liquid detergent composition, a) A first surfactant comprising, in an amount of about 1% to about 30% by weight of the composition, a mixture of surfactant isomers of formula 1 and a surfactant of formula 2, 【0082】 [ka] Approximately 50% to 100% by weight of the first surfactant is an isomer having m+n=11. Surfactant isomers of formula 1 Approximately 25% of the mixture weight %~about 50 weight % However, n=0 Surfactant isomers of Equation 1 And,Approximately 0.001% to 25% by weight of the first surfactant is the surfactant of formula 2, where X is the hydrophilic portion of the first surfactant. b) A second surfactant comprising a linear alkylbenzene sulfonate in an amount of about 1% to about 30% by weight of the composition, c) A liquid detergent composition comprising a detergent auxiliary agent. 2. The liquid detergent composition according to claim 1, wherein the liquid detergent composition has a higher stain removal score than a combination of scores of a first reference composition containing a first surfactant and a second reference composition containing a second surfactant. 3. A liquid detergent composition according to 1 or 2, wherein the stain contains identifiable sebum, black tod clay, burnt butter, cosmetics, dust sebum, or bacon fat. 4. A liquid detergent composition according to any one of 1 to 3, wherein the weight ratio of the first surfactant to the second surfactant is about 5:1 to about 1:5, preferably about 2:1 to about 1:2, and more preferably about 1:1. 5. A liquid detergent composition according to any one of 1 to 4, further comprising an additional surfactant including a nonionic surfactant, an anionic surfactant, or a combination thereof. 6. The liquid detergent composition according to 5, wherein the additional surfactant comprises a combination of an alkyl sulfate and a nonionic surfactant. 7. The liquid detergent composition according to 5, wherein the additional surfactants include an anionic surfactant and a nonionic surfactant containing an ethoxylated alcohol. 8. A liquid detergent composition according to any one of 1 to 7, wherein the detergent auxiliary comprises an enzyme, an enzyme stabilizer, a builder, a colorant, a stain re-adhesion inhibitor, a bleach, or a combination thereof. 9. A liquid detergent composition according to any one of 1 to 8, wherein the composition has an actual stain removal index that is 0.5 or more higher than the expected stain removal index. 10. The liquid detergent composition according to 9, wherein stain removal is measured in identifiable sebum, black tod clay, burnt butter, cosmetics, dust sebum, or bacon fat. 11. A liquid detergent composition according to any one of 1 to 10, wherein the linear alkylbenzene sulfonate has an average carbon chain length of about 11 to about 12. 12. A liquid detergent composition according to any one of 1 to 11, wherein the linear alkylbenzene sulfonate comprises more than 50% by weight of C12, more than 75% by weight of C12, an even-to-odd carbon ratio of about 3:2 to about 99:1, or a combination thereof. 13. A mixture of surfactant isomers of Formula 1 Approximately 15% to 40% by weight but , n=1 formula 1 surfactant isomers That is, A liquid detergent composition as described in any one of 1 to 12. 14. A mixture of surfactant isomers of Formula 1 Approximately 60% to 90% by weight but , n < 3 formula 1 surfactant isomers That is, A liquid detergent composition as described in any one of 1 to 13. 15. A liquid detergent composition according to any one of 1 to 14, wherein about 90% to about 100% by weight of the first surfactant is a surfactant isomer having m+n=11. 16. A liquid detergent composition according to any one of 1 to 15, wherein the stain removal index is measured on a cotton sample. [Examples] 【0083】 Example 1: Preparation of branched C15 alcohol product The homogeneous rhodium organophosphorus catalyst used in this embodiment is prepared in a high-pressure stainless steel stirred autoclave. 0.027 wt% Rh(CO)2ACAC ((acetylacetonato)dicarbonylrhodium(I)), 1.36 wt% tris(2,4-di-t-butylphenyl) phosphite ligand, and 98.62 wt% Synfluid® PAO 4 cSt (Chevron Phillips Chemical Company LP, POBox4910, The Woodlands, TX 77387-4910, Tel. (800)231-3260) inert solvent were added to the autoclave. The mixture was heated at 80°C for 4 hours in a CO / H2 atmosphere and under a pressure of 2 bar (g) to produce an activated rhodium catalyst solution (109 ppm rhodium, P:Rh molar ratio = 20). A C14 linear alpha-olefin starting material (1-tetradecene) from Chevron Phillips Chemical Company LP (AlphaPlus® registered trademark 1-tetradecene, manufactured by Chevron Phillips Chemical Company LP (POBox 4910, The Woodlands, TX 77387-4910, Tel. (800)231-3260)) was added. The resulting mixture had a rhodium concentration of approximately 30 ppm. The 1-tetradecene linear alpha-olefin was then isomerized at 80°C for 12 hours in a CO / H2 atmosphere and at a pressure of 1 bar (g). The isomerized olefin was then hydroformylated at 70°C for 8 hours in a CO / H2 atmosphere and at a pressure of 20 bar (g). The resulting reaction product was flash-distilled at 150-160°C and 25 millibars to recover the rhodium catalyst solution as the bottom product and the branched C15 aldehyde top product. Next, the recovered rhodium catalyst solution was used again to complete the second 1-tetradecene batch isomerization (4 hours) and hydroformylation (6 hours). The C15 aldehyde products obtained from the two batches were combined to obtain a branched C15 aldehyde product containing the following: 【0084】 [Table 5] 【0085】 The weight percentage of branching in the branched C15 aldehyde product was 87.8%. 【0086】 The branched C15 aldehyde product was hydrogenated in a high-pressure Inconel 625 stirred autoclave at 150°C and a hydrogen pressure of 20 bar(g). The hydrogenation catalyst used was Raney® Nickel 3111 (WRGrace & Co., 7500 Grace Drive, Columbia, MD21044, US, Tel. 1-410-531-4000) used at a 0.25 wt% loading. The aldehyde was hydrogenated for 10 hours, and the resulting reaction mixture was filtered to produce a branched C15 alcohol product containing the following: 【0087】 [Table 6] 【0088】 The weight percentage of 2-alkyl branching in the branched C15 alcohol product was 83.6%. 【0089】 Example 2. Synthesis of narrowly branched pentadecanol (C15) sulfate using a drip-membrane sulfate reactor (Branched alkyl sulfate Example Z) The alcohol obtained from Example 1 was sulfated in a falling film using a Chemithon single 15 mm × 2 m tubular reactor with SO3 produced from a sulfur combustion gas plant operating at 5.5 lb / hour of sulfur, producing 3.76% SO3 by volume. The alcohol feed rate was 17.4 kg / hour and the feed temperature was 83°F. The conversion of the alcohol to the alcohol sulfate acid mixture was achieved with 97% integrity. Neutralization with 50% sodium hydroxide was completed to 0.54% excess sodium hydroxide at ambient process temperature. The C15 narrow branched alcohol sulfate paste was neutralized with 30 gallons of sodium. Analysis by standard cationic SO3 titration determined the final mean product activity to be 74.5%. The mean non-sulfating level was 2.65% w / w. 【0090】 [Table 7] * Depending on the weight of the starting alcohol ** By weight of 2-alkyl branched C15 alcohol 【0091】 Combination example 【0092】 [Table 8] 【0093】 [Table 9] 1 High C12 (96%) linear alkylbenzene sulfonate supplied by P&G Chemicals, 2 Branched alkyl sulfate example Z, 3 C12 / C14 alkyl sulfate, 4 The Surfonic L24-9, which is commercially available from Huntsman, 5 C12 / C14 amine oxide supplied by P&G Chemicals, 6Citrosol 502, available from Archer Daniels Midland. 7 Top-cut coconut oil fatty acids supplied by Twin Rivers Technologies, 8 Preferenz, which is sold commercially by DuPont, 9 Arctic, which is sold commercially by Novozymes, 10 Disodium tetraborate pentahydrate, commercially supplied by Univar Solutions, 11 BASF's commercially available PE-20 【0094】 Comparative examples and examples of the present invention are prepared by combining all the raw materials to obtain comparative composition A, except that not all of the water is added to comparative compositions B-G and compositions 1-3 of the present invention in order to leave space (referred to as holes) for addition to the branched alkyl sulfate and linear alkylbenzene sulfonate. The following raw materials are rapidly mixed in a mixing impeller for about 60 minutes to achieve a vortex: water, solvent, surfactant, borax, stabilizer, neutralizer, builder, chelating agent, polymer, and enzyme to yield a stable one-phase liquid. 【0095】 To prepare comparative compositions B-G and compositions 1-3 of the present invention, branched alkyl sulfates and linear alkylbenzene sulfonates were added to the top of comparative composition A (with holes) to achieve the desired levels. Before adding water to balance the formulations, caustic substances or sulfur were added to achieve a consistent pH of 8.4-8.6 across all tested formulations. 【0096】 method Stain Removal Index Method The method involves using a turgotometer to simulate the washing of fabrics in a washing machine. The test fabric was washed with a clean knitted cotton ballast and 11 6cm x 6cm SBL2004 stain squares (60g each) using the test formulation. The SBL2004 sheets were purchased from WFK Testgewebe GmbH and cut into 6cm x 6cm squares. The washing test consisted of two internal replicas and four external replicas for each stain type and treatment A-J (Table 4). The total amount of liquid detergent used in the test was 2.36 grams. 【0097】 A turgotometer pot containing 1 L of test cleaning solution + test fabric, stain square, and ballast at 25°C and 7 US gpg was stirred at 208 rpm for 12 minutes and centrifuged. The fabric was then rinsed in 7 US gpg water at 15°C at 167 rpm for 5 minutes and centrifuged. After rinsing, the fabric was dried on High for 70 minutes and then analyzed. Image analysis was used to compare each stain to a control example of stain-free fabric. The software converted the resulting images to standard color values ​​and assigned a color value (stain level) to each stain by comparing them to the baseline values ​​based on a commonly used Macbeth color retention chart. Eight copies of each were prepared. A stain removal index score can be calculated for each stain. 【0098】 Stain removal from the sample was measured as follows: 【0099】 【number】 ΔE initial =Stain level before washing, standard L for unwashed stains and unwashed background fabric. * a * , and b * It is calculated from the difference in colorimetric measurements, but ΔE washed =Stain level after washing, standard L for washed stains and unwashed background fabric. * a * , and b * It is calculated from the difference in colorimetric measurements. 【0100】 Technical stain samples of CW120 cotton are obtained. These stain samples include identifiable sebum (PCS132), black tod clay (GSRTBT001), burnt butter (GSRTBB001), Covergirl cosmetics (GSRTCGM001), ASTM dust sebum (PCS94), and dyed bacon fat (GSRTBGD001), purchased from Accurate Product Development (Fairfield, OH). 【0101】 The dimensions and values ​​disclosed herein should not be understood as being strictly limited to the exact numerical values ​​listed. Instead, unless otherwise specified, each such dimension is intended to mean both the listed value and the functionally equivalent range encompassing that value. For example, a dimension disclosed as "40 mm" is intended to mean "approximately 40 mm." 【0102】 All documents referenced herein, including any patents or patent applications that are cross-referenced or related, and any patent applications or patents on which this application claims priority or benefit thereof, are incorporated herein by reference in their entirety unless explicitly stated to be excluded or limited. No reference to any document shall be deemed prior art to any invention disclosed or claimed herein, nor shall it be deemed to teach, suggest or disclose any such invention, either alone or in combination with any other reference. Furthermore, any meaning or definition of a term in this document shall be governed by the meaning or definition given to that term in this document to the extent that it conflicts with any meaning or definition of the same term in any document incorporated by reference. 【0103】 While specific embodiments of the present invention have been illustrated and described, it will be apparent 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. Therefore, it is intended that all such changes and modifications within the scope of the invention be covered in the appended claims.

Claims

[Claim 1] A liquid laundry detergent composition, a) A first surfactant comprising essentially a mixture of surfactant isomers of formula 1 and a surfactant of formula 2 in an amount of 1% to 30% by weight of the composition, 【Chemistry 1】 The first surfactant comprises 90% to 100% by weight of an isomer having m + n = 11, 25% to 50% by weight of a mixture of surfactant isomers of formula 1 having n = 0, and 0.001% to 25% by weight of the first surfactant comprises a surfactant of formula 2, wherein X is a hydrophilic portion selected from the group consisting of sulfates. b) A second surfactant comprising a linear alkylbenzene sulfonate in an amount of 1% to 30% by weight of the composition, c) A detergent auxiliary, including, A liquid laundry detergent composition in which the weight ratio of the first surfactant to the second surfactant is 2:1 to 1:

2. [Claim 2] The liquid laundry detergent composition according to claim 1, wherein the liquid laundry detergent composition has a higher stain removal score than a combination of the scores of a first reference composition containing the first surfactant and a second reference composition containing the second surfactant. [Claim 3] The liquid laundry detergent composition according to claim 2, wherein the stain comprises identifiable sebum, black tod clay, burnt butter, cosmetics, dust sebum, or bacon fat. [Claim 4] The liquid laundry detergent composition according to claim 1 or 2, wherein the weight ratio of the first surfactant to the second surfactant is 1:

1. [Claim 5] The liquid laundry detergent composition according to claim 1 or 2, further comprising an additional surfactant including a nonionic surfactant, anionic surfactant, or a combination thereof. [Claim 6] The liquid laundry detergent composition according to claim 5, wherein the additional surfactant includes a combination of an alkyl sulfate and a nonionic surfactant. [Claim 7] The liquid laundry detergent composition according to claim 5, wherein the additional surfactant comprises an anionic surfactant and a nonionic surfactant containing an ethoxylated alcohol. [Claim 8] The liquid laundry detergent composition according to claim 1 or 2, wherein the composition has an actual stain removal index that is 0.5 or more higher than the expected stain removal index. [Claim 9] The liquid laundry detergent composition according to claim 8, wherein the stain removal is measured in identifiable sebum, black tod clay, burnt butter, cosmetics, dust sebum, or bacon fat. [Claim 10] The liquid laundry detergent composition according to claim 1 or 2, wherein the linear alkylbenzene sulfonate has an average carbon chain length of 11 to 12. [Claim 11] The liquid laundry detergent composition according to claim 1 or 2, wherein the linear alkylbenzene sulfonate comprises more than 50% by weight of C12, more than 75% by weight of C12, an even-to-odd carbon ratio of 3:2 to 99:1, or a combination thereof. [Claim 12] The liquid laundry detergent composition according to claim 1 or 2, wherein 15% to 40% by weight of the mixture of surfactant isomers of formula 1 is a surfactant isomer of formula 1 having n=1. [Claim 13] The liquid laundry detergent composition according to claim 1 or 2, wherein 60% to 90% by weight of the mixture of surfactant isomers of formula 1 is a surfactant isomer of formula 1 having n < 3. [Claim 14] The liquid laundry detergent composition according to claim 8, wherein the stain removal index is measured on a cotton sample.

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