Solid particles of linear alkylbenzene sulfonate anionic cleaning surfactants

Abstract

This invention relates to solid particles of a linear alkylbenzene sulfonate anionic detergent surfactant. These particles contain a polycationic salt of linear alkylbenzene sulfonic acid having both magnesium and sodium cations. The weight ratio of the magnesium salt of linear alkylbenzene sulfonic acid to the sodium salt of linear alkylbenzene sulfonic acid is in the range of 0.6:1 to 9:1.

Description

[Technical Field]

[0001] This invention relates to solid particles of a linear alkylbenzenesulfonate anionic detergent surfactant. These particles contain a polycationic salt of linear alkylbenzenesulfonic acid having both magnesium and sodium cations. The weight ratio of the magnesium salt of linear alkylbenzenesulfonic acid to the sodium salt of linear alkylbenzenesulfonic acid is carefully controlled. These particles have good storage stability and good solubility when in contact with water. [Background technology]

[0002] Laundry detergent manufacturers formulate products containing surfactants as core chemicals for cleaning fabrics during washing. One category of such surfactants includes anionic linear alkylbenzene sulfonates (LAS), which can be delivered in many physical forms. For the manufacture of solid powder detergents, these forms typically include spray-dried particles, aggregated particles, or flake particles. Which of these forms is used typically depends on factors such as the surfactant activity of the particles, the cost of manufacturing the particles, the rate at which the particles can be produced, the physical properties of the particles, and / or any combination of these and / or other factors.

[0003] The majority of the solid powder detergent industry provides LAS in either spray-dried or aggregated particle form. These particles are generally limited by the maximum mass of LAS per unit mass of particle, i.e., particle activity, in terms of their ability to be manufactured or the physical properties of the final particles. Higher activity LAS particles tend to be more difficult to process due to the adhesion of LAS, especially under humid conditions. Increasing the activity of LAS particles is typically observed to reduce the humidity at which handling problems are observed. Higher activity surfactant particles are becoming increasingly attractive as the industry desires to move towards more concentrated formulations in order to reduce the carbon footprint of their applications, expanding the challenges surrounding providing consumers with free-flowing powder detergent formulations.

[0004] The most highly active LAS particles currently on the market are so-called LAS flakes, which typically have activity exceeding 80% by weight of LAS. Therefore, they are particularly susceptible to moisture. The inventors have found that altering the counterion of a LAS species affects the sensitivity of LAS to moisture, particularly the effect of moisture (the amount present) on its physical properties, such as bulk flow. Highly active MgLAS2 particles were observed to maintain their free-flow properties up to higher moisture abundances (measured as relative humidity of the particles) compared to their NaLAS counterpart.

[0005] The inventors also found that the dissolution dynamics of MgLAS2 particles are inferior to those of their NaLAS counterparts. However, the inventors found that the negative aggregation characteristics of NaLAS can be avoided by generating particles containing both MgLAS2 and NaLAS in very specific ratios. [Overview of the Initiative] [Means for solving the problem]

[0006] The present invention provides solid particles of a linear alkylbenzene sulfonate anionic detergent surfactant suitable for use in laundry detergent compositions, wherein the particles contain more than 50% to 100% by weight of a polycationic salt of linear alkylbenzene sulfonic acid containing both magnesium cations and sodium cations, and the weight ratio of the magnesium salt of linear alkylbenzene sulfonic acid to the sodium salt of linear alkylbenzene sulfonic acid is in the range of 0.6:1 to 9:1. [Modes for carrying out the invention]

[0007] Solid particles of linear alkylbenzene sulfonate anionic cleaning surfactants Solid particles of linear alkylbenzene sulfonate anionic detergent surfactants are suitable for use in laundry detergent compositions. The particles contain more than 50% to 100% by weight of a polycationic salt of linear alkylbenzene sulfonic acid containing both magnesium and sodium cations. The weight ratio of the magnesium salt of linear alkylbenzene sulfonic acid to the sodium salt of linear alkylbenzene sulfonic acid is in the range of 0.6:1 to 9:1.

[0008] Preferably, the particles contain a polycationic salt of linear alkylbenzene sulfonic acid in an amount of 60% to 99% by weight, or 70% to 97% by weight, or 80% to 95% by weight.

[0009] The particles may contain inorganic salts. The particles may contain more than 0% by weight but up to 40% by weight of inorganic salts. If present, inorganic salts may be present at levels of more than 0% by weight but up to 40% by weight, or 1% by weight but up to 40% by weight.

[0010] The particles may contain more than 0% by weight and up to 20% by weight of polymer. If present, the polymer may be present at levels of more than 0% by weight and up to 20% by weight, or 1% by weight and up to 20% by weight.

[0011] The particles can be any suitable particle form. Suitable forms include spray-dried particles, aggregates, noodles, needles, rings, and flakes. The preferred form is flakes.

[0012] Polycationic salts of linear alkylbenzene sulfonic acids The polycationic salt of linear alkylbenzenesulfonic acid contains both magnesium and sodium cations. The weight ratio of the magnesium salt of linear alkylbenzenesulfonic acid to the sodium salt of linear alkylbenzenesulfonic acid is in the range of 0.6:1 to 9:1, preferably 0.8:1 to 9:1, preferably 0.9:1 to 7:1, and preferably 1:1 to 5:1.

[0013] Preferably, the linear alkylbenzenesulfonic acid has a 2-phenyl isomer content of 15% to 20% by weight.

[0014] inorganic salts Any suitable inorganic salt can be used.

[0015] Suitable inorganic salts are selected from carbonates, chlorides, magnesium salts, silicates, sulfates, zeolites, and any combination thereof.

[0016] Preferred inorganic salts are selected from magnesium carbonate, magnesium sulfate, sodium carbonate, sodium sulfate, and any combination thereof.

[0017] polymer Any suitable polymer can be used.

[0018] Suitable polymers are selected from modified polysaccharide polymers, polycarboxylate polymers, polyethylene glycol polymers, polyethyleneimine polymers, silicone polymers, terephthalate polymers, other polyester polymers, and any combination thereof.

[0019] Preferred polymers are selected from cellulosic polymers, polycarboxylate polymers, polyethylene glycol polymers, silicone polymers, terephthalate polymers, and any combination thereof.

[0020] Suitable polymers are selected from modified polyamine polymers, modified polysaccharide polymers, polyalkylene oxide polymers, polycarboxylate polymers, silicone polymers, terephthalate polymers, other polyester polymers, and any combination thereof.

[0021] Preferably, the polymer includes polymers selected from polyamine polymers, modified polysaccharide polymers, polyalkylene oxide polymers, polycarboxylate polymers, and any combination thereof, most preferably including polycarboxylate polymers.

[0022] Modified polyamine polymers A suitable modified polyamine polymer comprises a polyamine core structure and a plurality of alkoxylate groups bonded to the core structure. The polyamine core structure includes polyalkyleneimines and linear or branched oligoamines.

[0023] The polyamine core structure and the alkoxylate groups bonded to the core structure can be further derivatized. For example, the polyamine core structure is C1-C 30 Linear or branched alkyl groups, more preferably C1-C 10 The alkoxylate group can be further substituted with a C1-C5 linear or branched alkyl group, most preferably a methyl group, and can be further partially or completely quaternized.

[0024] A suitable modified polyamine dispersant is ethoxylated polyethyleneimine (EPEI). EPEI is an effective dispersant for hydrophilic stains, especially hydrophilic particulate stains such as clay.

[0025] Preferably, EPEI contains a polyethyleneimine skeleton having a weight-average molecular weight of 100 g / mol to 2000 g / mol, preferably 200 g / mol to 1500 g / mol, more preferably 300 g / mol to 1000 g / mol, even more preferably 400 g / mol to 800 g / mol, most preferably 500 g / mol to 700 g / mol, and preferably about 600 g / mol. The ethoxylated chains in EPEI may have a weight-average molecular weight of 200 g / mol to 2000 g / mol per ethoxylated chain, preferably 400 g / mol to 1500 g / mol, more preferably 600 g / mol to 1000 g / mol, and most preferably about 880 g / mol. The ethoxylated chains in EPEI have an average of 5 to 40 ethoxy units per ethoxylated chain, preferably 10 to 30, more preferably 15 to 25, even more preferably 18 to 22, and most preferably about 20. EPEI can have a total weight-average molecular weight of 5000 g / mol to 20000 g / mol, preferably 7500 g / mol to 17500 g / mol, more preferably 10000 g / mol to 15000 g / mol, even more preferably 12000 g / mol to 13000 g / mol, and most preferably about 12700 g / mol. A preferred example is a polyethyleneimine core ethoxylated to 20 EO groups per NH (average molecular weight about 600 g / mol). Suitable EPEIs of this type include Sokalan HP20, available from BASF, and Lutensol FP620, also from BASF. An example of a commercially available polyethyleneimine ethoxylate is one prepared by reacting ethylene oxide with Nippon Shokubai's Epomin SP-006.

[0026] EPEI may contain polyethyleneimine having an average molecular weight (Mw) in the range of 1800 to 5000 g / mol (before ethoxylation), and the polyoxyethylene side chains may have an average of 25 to 40 ethoxy units per side chain attached to the polyethyleneimine backbone.

[0027] Suitable modified polyamine polymers include amphiphilic alkoxylated polyalkyleneimine polymers. These polymers have a balanced hydrophilic and hydrophobic property to remove oil and body dirt particles from surfaces and keep them suspended in the cleaning solution. Suitable amphiphilic water-soluble alkoxylated polyalkyleneimine polymers comprise a polyalkyleneimine core, preferably a polyethyleneimine core, and alkoxylate groups attached to the core. Suitable alkoxylate groups have the following structure:

[0028] [ka] In the formula, in each case, * This indicates half of the bonding to the nitrogen atom in the core. A 2 In each case, the material is independently selected from 1,2-propylene, 1,2-butylene, and 1,2-isobutylene. A 3 It is 1,2-propylene. R is independently selected from hydrogen and C1-C4 alkyl groups in each case, and is preferably hydrogen. m has an average value in the range of 0 to 2, preferably 0. n has an average value in the range of 5 to 50. p has an average value in the range of 3 to 50.

[0029] Suitable alkoxylated polyalkyleneimine polymers have a degree of quaternization in the range of 0 to 50, preferably 0 to 20, and more preferably 0 to 10.

[0030] A preferred alkoxylated polyalkyleneimine polymer is polyethyleneimine (MW=600) modified with 24 ethoxylate groups per -NH and 16 propoxylate groups per -NH. Another preferred alkoxylated polyalkyleneimine polymer is polyethyleneimine (MW=600) modified with 10 ethoxylate groups per -NH and 7 propoxylate groups per -NH.

[0031] Suitable alkoxylated polyalkyleneimine polymers include Sokalan HP30 Booster available from BASF.

[0032] Suitable modified polyamine polymers include zwitterionic polyamines. Suitable zwitterionic polyamines have the following structure:

[0033]

Chemical formula

[0034] A suitable zwitterionic polyamine has the following general structure: bis((C2H5O)(C2H4O)n)(CH3)-N + -C x H 2x -N + -(CH3)-bis((C2H5O)(C2H4O)n) (wherein n is 20-30 and x is 3-8), or having sulfated or sulfonated variants thereof.

[0035] A particularly preferred zwitterionic polyamine is Lutensit Z96 polymer from BASF (100% zwitterionic hexamethylenediamine according to the following formula, quaternized, with approximately 40% polyethoxy(EO)). 24 It is available in a form in which the group is sulfonated.

[0036] [ka]

[0037] Another suitable zwitterionic polyamine is an amphoterically modified oligopropylene imine ethoxylate.

[0038] Modified polysaccharide polymers A variety of polysaccharides, including cellulose, starch, guar, dextran, polyglucan, chitin, curdlan, xylose, inulin, pullulan, locust bean gum, cassia gum, tamarind gum (xyloglucan), xanthan gum, amylose, amylopectin, scleroglucan, and any combination thereof, may be useful as starting materials for chemical modification to produce modified polysaccharide polymers.

[0039] The most common type of modified polysaccharide is modified cellulose.

[0040] Examples of modified cellulose polymers include anionic modified cellulose polymers modified with negatively charged functional groups. Suitable anionic modified cellulose polymers include carboxyalkyl celluloses such as carboxymethyl cellulose. Carboxymethyl cellulose may have a carboxymethyl substitution degree of about 0.5 to about 0.9 and a molecular weight of about 80,000 Da to about 300,000 Da. Suitable carboxymethyl celluloses include the Finnfix® series sold by CP Kelco or Nouryon, which includes Finnfix® GDA, hydrophobic modified carboxymethyl cellulose, for example, alkyl ketene dimer derivatives of carboxymethyl cellulose sold under the trade name Finnfix® SH1, or block-type carboxymethyl cellulose sold under the trade name Finnfix® V. Other suitable anionic modified cellulose polymers include sulfoalkyl cellulose and sulfoethyl cellulose.

[0041] Modified cellulose polymers also include nonionic modified cellulose polymers, which are modified with functional groups that have no charge whatsoever. Suitable nonionic modified cellulose polymers include alkylcellulose, hydroxyalkylcellulose, hydroxyalkylalkylcellulose, and alkylalkoxyalkylcellulose. Suitable nonionic modified cellulose polymers also include nonionic cellulose carbamates and nonionic 6-desoxy-6-aminocellulose derivatives. Examples of alkylcellulose include methylcellulose (MC) and ethylcellulose (EC). Suitable ethylcellulose is sold by Dow Chemicals, DuPont, or IFF under the trade name Ethocel®. Examples of hydroxyalkylcellulose include hydroxyethylcellulose (HEC) and hydroxypropylcellulose (HPC). Suitable HEC is sold by Ashland under the trade name Natrosol® hydroxyethylcellulose, such as Natrosol® 250, which is available in different grades with a total molar substitution (MS) of 2.5. A suitable HEC is also marketed by Dow Chemicals under the trade name CELLOSIZE® hydroxyethylcellulose. A suitable HPC is marketed by Ashland under the trade name Klucel®. An example of hydroxyalkylalkylcellulose is hydroxypropyl methylcellulose (HPMC), which is available in different grades under the trade name Methocel® from Dow Chemicals, DuPont, or IFF, and marketed by Ashland under the trade name Benecel®.

[0042] Examples of modified cellulose polymers include cationically modified cellulose polymers modified with cationically charged functional groups. A preferred cationically modified cellulose is quaternary hydroxyethyl cellulose (polyquaternium-10), which is available from Dow Chemical under the trade name Ucare, for example, Ucare LR400, Ucare LR30M, Ucare JR125, Ucare JR400, etc. Another preferred cationically modified cellulose polymer is quaternary hydroxyethyl cellulose (HEC) polymer (polyquaternium-67) having cationic substitution of trimethylammonium and dimethyldodecylammonium, which is available from Dow Chemical under the trade name SoftCAT, for example, SoftCAT SK, SoftCAT SK-MH, SoftCAT SX, SoftCAT SL, etc. Other preferred cationically modified celluloses are those sold by Dow Chemical under the trade name SupraCare®, for example, SupraCare® 150, SupraCare® 133, and SupraCare® 212. Suitable cation-modified cellulose polymers include those modified with cationic groups and hydrophobic groups.

[0043] Another preferred type of modified polysaccharide is modified guar. Modified guar may be nonionic, anionic, and / or cationic. Preferred nonionic modified guars include hydroxypropyl guar, e.g., N-Hance® HP40 and HP40S guar, available from Ashland. Preferred examples of modified guars include anionic and nonionic modified carboxymethyl hydroxypropyl guar (CMHPG), e.g., Galactasol®, available from Ashland. Suitable modified guar includes cationic modified guar, such as guar hydroxypropyltrimonium chloride, which is available from Ashland as AquaCat® CG518 cationic solution, AquaCat® PF618 cationic solution, and N-Hance® 3000, 3196, 3215, BF-13, BF-17, C261, C261N, CG13, and CCG45. Other cationic modified guar polymers are available from Solvay as Jaguar® C 162, Excel, Excel SGI, Optima, C13S, C13SH, ​​C14S, C-17, LS SGI, and C-500 STD. Other nonionic and / or anionic modified guar gums include, for example, Jaguar® HP 105 (hydroxypropyl guar gum), Jaguar® SOFT, and HP-120 COS (carboxymethyl hydroxypropyl guar gum).

[0044] Suitable modified polysaccharide polymers include modified starch. Examples of modified starch include carboxylic acid esters of starch, and starch with, for example, C6-C6 24Examples of modified starches include esterification products with alkyl (alkenyl) succinic anhydride, and starch maleates (starch reacts with maleic anhydride). Examples of modified starches include, but are not limited to, acetylated starch, acetylated distarch adipic acid, distarch phosphate, hydroxypropyl starch, hydroxypropyl distarch phosphate, phosphorylated cross-linked starch (distarch ohosphate), acetylated distarch phosphate, and sodium octenyl succinate starch.

[0045] Suitable modified polysaccharide polymers include polymers based on other polysaccharides, such as cationic dextran polymers, which are commercially available from Meito Sangyo Co., Ltd. under the trade names CDC, CDC-L, and CDC-H.

[0046] Suitable modified polysaccharide polymers include polymers based on polyglucans. Suitable modified polyglucans are based on alpha-1,3-polyglucan and / or 1,6-polyglucan. Preferably, the modified polyglucan may be cationically modified, for example, a cationically modified alpha-1,3-polyglucan such as cationically modified alpha-1,6-polyglucan. Another class of preferred modified polyglucans may be hydrophobic and / or hydrophilically modified. Polyglucan esters are particularly preferred due to their performance and biodegradability profile.

[0047] Other suitable polysaccharide polymers include inulin-based polymers. Examples of modified inulins include carboxymethyl group-modified inulin (CMI), and preferred CMIs are the Carboxyline series sold by Cosun Beet Company, including Carboxyline 25-40D, Carboxyline 25 D Powder, Carboxyline 20 LS D Powder, Carboxyline 25, and Carboxyline 25-30 UP. Examples of modified inulins include cation-modified inulins, and preferred cation-modified inulins are the Quatin series sold by Cosun Beet Company, including Quatin 350, Quatin 380, and Quatin 1280, characterized by different degrees of substitution (DS), cation density (meq / g), and molecular weight (g / mol).

[0048] Suitable modified polysaccharide polymers include polymers based on other polysaccharides, such as xylose carbamates, carboxylated or sulfoalkylated pullulan, carboxylated or sulfoalkylated chitosan, and any combination thereof.

[0049] Polyalkylene oxide polymer A suitable polyalkylene oxide polymer is poly(ethylene oxide). Preferably, poly(ethylene oxide) has a molecular weight of 1000 to 10000, more preferably 2000 to 9000, more preferably 3000 to 8500, and most preferably 4000 to 8000, for example, 5000, 6000, or 7000.

[0050] Suitable polyalkylene oxide polymers include graft polymers. A suitable graft polymer may be polyalkylene oxide-based. A suitable polymer comprises a polyalkylene oxide skeleton (A) as a graft base and polymer side chains (B) grafted thereon. The polymer side chains (B) can be obtained by polymerization of at least one vinyl ester monomer. The polyalkylene oxide skeleton (A) can be obtained by polymerization of at least one monomer selected from the group consisting of ethylene oxide, 1,2-propylene oxide, 1,2-butylene oxide, 2,3-butylene oxide, 1,2-pentene oxide, or 2,3-pentene oxide. Such graft polymers are known as effective stain suspension polymers for hydrophobic and hydrophilic stains, as surfactant boosters, and sometimes as stain transfer inhibitors.

[0051] Suitable graft polymers include amphiphilic graft copolymers comprising a polyethylene glycol backbone (A) as a graft base and at least one pendant side chain (B) selected from polyvinyl acetate, polyvinyl alcohol, and mixtures thereof. A preferred graft polymer of this type is Sokalan HP22, available from BASF.

[0052] A preferred graft polymer is an amphiphilic graft polymer based on a water-soluble polyalkylene oxide (A) as a graft base and side chains formed by polymerization of a vinyl ester component (B), the polymer typically having an average graft site of less than 1 per 50 alkylene oxide units and an average molar mass M of typically 3,000 to 100,000. One particular preferred graft polymer of this type is a polyvinyl acetate grafted polyethylene oxide copolymer having polyethylene oxide as a graft base and multiple polyvinyl acetate side chains. The molecular weight of the polyethylene oxide backbone is typically about 6,000, the weight ratio of polyethylene oxide to polyvinyl acetate is typically about 40 to 60, and there is typically 1 or fewer graft sites per 50 ethylene oxide units. The most preferred polymer of this type is available from BASF as Sokalan PG101.

[0053] Suitable graft polymers include a block copolymer skeleton (A) as a graft base, which can be obtained by polymerization of at least two monomers selected from the group consisting of ethylene oxide, 1,2-propylene oxide, 1,2-butylene oxide, 2,3-butylene oxide, 1,2-pentene oxide, or 2,3-pentene oxide, wherein the number of individual blocks (x) in the block copolymer skeleton (A) is an integer, where x is typically 2 to 10, preferably 3 to 5; and polymer side chains (B) grafted onto the block copolymer skeleton, which can be obtained by polymerization of at least one vinyl ester monomer. These polymers have an improved biodegradation profile.

[0054] Suitable graft polymers include those having a number-average molecular weight of about 1,000 to about 20,000 daltons and comprising a polyalkylene oxide skeleton (A) based on ethylene oxide, propylene oxide, or butylene oxide, a side chain derived from N-vinylpyrrolidone (B), and a side chain derived from a vinyl ester (C) derived from a saturated monocarboxylic acid and / or a methyl or ethyl ester of acrylic acid or methacrylic acid containing 1 to 6 carbon atoms.

[0055] Polycarboxylate polymer Polycarboxylate polymers typically contain at least one carboxyl group-containing monomer. The carboxyl group-containing monomers are typically selected from acrylic acid, methacrylic acid, fumaric acid, maleic acid, itaconic acid, aconitic acid, mesaconic acid, citraconic acid, methylenemalonic acid, their salts, their anhydrides, and any combination thereof.

[0056] Suitable carboxylate polymers include polyacrylate homopolymers having molecular weights of 4,000 Da to 9,000 Da or 6,000 Da to 9,000 Da. Other suitable carboxylate polymers include copolymers of acrylic acid (and / or methacrylic acid) and maleic acid having molecular weights of 50,000 Da to 120,000 Da or 60,000 Da to 80,000 Da. Polyacrylate homopolymers and copolymers of acrylic acid (and / or methacrylic acid) and maleic acid are commercially available from Dow Chemicals as Acusol 445 and 445N, Acusol 531, Acusol 463, Acusol 448, Acusol 460, Acusol 465, Acusol 497, and Acusol 490, and from BASF as Sokalan CP5, Sokalan CP7, Sokalan CP45, and Sokalan CP12S.

[0057] Suitable polycarboxylate polymers include polyitaconate homopolymers such as Itaconix® DSP 2K®, sold by Itaconix, and Amaze SP, available from Nouryon.

[0058] Suitable polycarboxylate polymers include copolymers comprising a carboxyl group-containing monomer and one or more sulfonate or sulfone group-containing monomers. The sulfonate or sulfone group-containing monomers are typically selected from 2-acrylamido-2-methyl-l-propanesulfonic acid (AMPS), 2-methacrylamido-2-methyl-l-propanesulfonic acid, 3-methacrylamido-2-hydroxy-propanesulfonic acid, allylsulfonic acid, methallylsulfonic acid, 3-allyloxy-2-hydroxy-1-propanesulfonic acid, 2-methyl-2-propene-l-sulfonic acid, styrenesulfonic acid, vinylsulfonic acid, 3-sulfopropyl acrylate, 3-sulfopropyl methacrylate, sulfomethylacrylamide, sulfomethylmethacrylamide, and their water-soluble salts.

[0059] Suitable polymers may include maleic acid, acrylic acid, and 3-allyloxy-2-hydroxy-1-propanesulfonic acid. Suitable polymers may also include acrylic acid and 2-acrylamido-2-methylpropanesulfonate, for example, those sold by Dow Chemicals under the trade names Acusol 588, BASF under the trade name Sokalan CP50, and Nouryon under the trade names Aquatreat AR-545, Versaflex 310, and Versaflex 310-37.

[0060] Suitable polymers include poly(itaconate-co-AMPS) sodium salts such as Itaconix® TSI® 322 and Itaconix® CHT® 122, which are available from Itaconix.

[0061] Suitable polymers include those containing sulfonate or sulfone group-containing monomers and carboxyl group-containing monomers, as well as those containing other structural units. Additional suitable monomers are ether-bond-containing monomers represented by the following formulas (1) and (2):

[0062] [ka] In formula (1), R0 represents a hydrogen atom or a CH3 group. R represents a CH2 group, a CH2CH2 group, or a single bond. x represents a number between 0 and 50, preferably between 0 and 20, and more preferably between 0 and 5 (however, if R is a single bond, x represents a number between 1 and 5). R1 is a hydrogen atom or C1~C 20 It is an organic group. In formula (2), R0 represents a hydrogen atom or a CH3 group. R represents a CH2 group, a CH2CH2 group, or a single bond. x represents a number between 0 and 5. R1 is a hydrogen atom or C1~C 20 It is an organic group.

[0063] Certain preferred polymers contain structural units derived from 1-(allyloxy)-3-butoxypropane-2-ol by weight, 50-98% by weight of acrylic acid or methacrylic acid, and 1-49% by weight of 3-allyloxy-2-hydroxy-1-propanesulfonic acid, and have a weight-average molecular weight of about 20,000 to about 60,000. Particularly preferred polymers of this type contain structural units derived from 1-(allyloxy)-3-butoxypropane-2-ol by weight, 70-89% by weight of acrylic acid or methacrylic acid, and 10-20% by weight of 3-allyloxy-2-hydroxy-1-propanesulfonic acid, and have a weight-average molecular weight of about 30,000 to about 60,000. Here, 1-(allyloxy)-3-butoxypropan-2-ol is a preferred monomer represented by formula (2) when R0 is H, R is CH2, x is 0, and R1 is n-butyl(C4-alkyl).

[0064] Suitable polycarboxylate polymers include copolymers containing carboxyl group-containing monomers and other suitable monomers. Other suitable monomers include esters and / or amides of carboxyl group-containing monomers, such as C1-C of acrylic acid. 20 Alkyl esters; alkylenes; vinyl ethers, such as methyl vinyl ether, styrene, and any mixture thereof, are selected. One particular preferred family of this type is sold by Ashland under the trade name Gantrez, which includes Gantrez An (alternating copolymer of methyl vinyl ether and maleic anhydride), Gantrez S (alternating copolymer of methyl vinyl ether and maleic acid), Gantrez ES (alternating copolymer of methyl vinyl ether and maleic acid ester), and Gantrez MS (alternating copolymer of methyl vinyl ether and maleate).

[0065] Suitable polycarboxylate polymers include polyepoxy succinic acid (PESA) polymers. The most preferred polyepoxy succinic acid polymers can be identified using CAS numbers 51274-37-4 or 109578-44-1. Suitable polyepoxy succinic acid polymers are commercially available from various suppliers, including Aquapharm Chemicals Pvt. Ltd (trade name: Maxinol 600), Shandong Taihe Water Treatment Technologies Co., Ltd (trade name: PESA), and Sirius International (trade name: Briteframe PESA).

[0066] A suitable polycarboxylate polymer may contain a monomer having at least one aspartic acid group or a salt thereof, and the polymer may contain at least 25 mol%, 40 mol%, or 50 mol% of such monomer. A preferred example is the sodium salt of poly(aspartic acid) with a molecular weight of 2000-3000 g / mol, commercially available from Lanxess as Baypure® DS 100. The suitable polyaspartate may be further modified.

[0067] Terephthalate polymer A suitable terephthalate polymer is a terephthalate-derived polyester polymer containing structural units (I) and / or (II): (I) -[(OCHR 1 -CHR 2 ) a -O-OC- Ar-CO-] d (II) -[(OCHR 3 -CHR 4 ) b -O-OC-s Ar-CO-] e During the ceremony, a and b are between 1 and 200. d and e range from 1 to 50. Ar is independently selected from 1,4-substituted phenylene and 1,3-substituted phenylene. sAr has -SO3M at the 5th position (wherein M is a counterion selected from Na, Li, K, Mg / 2, Ca / 2, Al / 3, ammonium, mono-, di-, tri-, or tetraalkylammonium, and the alkyl group is C1-C 18 Alkyl or C2-C 10 It is a 1,3-substituted phenylene (which is a hydroxyalkyl group or a mixture thereof). R 1 , R 2 , R 3 , R 4 These are independently H or C1~C 18 It is selected from n-alkyl or iso-alkyl, and preferably from H or C1 alkyl.

[0068] Optionally, the polymer may further contain one or more terminal groups (III) derived from polyalkylene glycol monoalkyl ethers, preferably selected from structure (IV-a).

[0069] [ka] During the ceremony, R7 is a straight or branched chain C 1~30 Alkyl, C2~C 30 Alkenyl, or cycloalkyl group having 5-9 carbon atoms, or C8-C 30 Aryl group, or C6~C 30 Arylalkyl groups, preferably C 1~4 Alkyl, more preferably methyl. c, d, and e are numbers independently selected from 0 to 200 based on the molar mean, and the sum of c + d + e is between 2 and 500. The terminal groups (IV-a) [C2H4-O], [C3H6-O], and [C4H8-O] may be arranged in a block-like manner, alternately, periodically, and / or statistically, preferably in a block-like manner and / or statistically, and any one of the terminal groups (IV-a) [C2H4-O], [C3H6-O], and [C4H8-O] may be linked to -R7 and / or -O. Preferably, the [C3H6-O] group is linked to -O, and -O is further linked to -OC-Ar-CO- or -OC-sAr-CO-.

[0070] Optionally, the polymer may further contain one or more anionic end units (IV) and / or (V) as described in European Patent No. 3222647. In the following formula, M is Na + Li + , K + , 1 / 2Mg 2+ , 1 / 2Ca 2+ , 1 / 3 Al 3+ A counterion selected from ammonium, mono-, di-, tri-, or tetraalkylammonium, where the alkyl group is C1-C 18 Alkyl or C2-C 10 It is a hydroxyalkyl group, or a mixture thereof.

[0071] [ka]

[0072] Optionally, the polymer may include crosslinked polyfunctional structural units having at least three functional groups capable of esterification. The functional groups may be, for example, acids, alcohols, esters, anhydrides, or epoxy groups.

[0073] Optionally, other di- or polycarboxylic acids or their salts or their (di)alkyl esters may be used in the polyester, such as naphthalene-1,4-dicarboxylic acid, naphthalene-2,6-dicarboxylic acid, tetrahydrophthalic acid, trimellitic acid, diphenoxyethane-4,4'-dicarboxylic acid, diphenyl-4,4'-dicarboxylic acid, 2,5-franzicarboxylic acid, adipic acid, sebacic acid, decane-1,10-dicarboxylic acid, fumaric acid, succinic acid, 1,4-cyclohexanedicarboxylic acid, cyclohexanediacetic acid, glutaric acid, azelaic acid, or their salts or their (di)alkyl esters, preferably their (C1-C4)-(di)alkyl esters, more preferably their (di)methyl esters, or mixtures thereof.

[0074] One preferred type of polyester polymer is a nonionic polyester polymer that does not contain the above structural unit (II). A particular preferred nonionic terephthalate-derived polymer has a structure defined by the following formula:

[0075] [ka] During the ceremony, R5 and R6 are independently selected from H or CH3. More preferably, one of R5 and R6 is H and the other is CH3. c and d are numbers independently selected from 0 to 200 based on the molar mean, and the sum of c + d is between 2 and 400. More preferably, d is between 0 and 50, and c is between 1 and 200. More preferably, d is between 1 and 10, and c is between 5 and 150. R7 is a C1-C4 alkyl group, and more preferably a methyl group. N is between 1 and 50, based on the molar mean.

[0076] A prime example of the most preferred terephthalate-derived nonionic polymer described above is one in which R5 and R6 are H and the other is CH3, d is 0, c is 5-100, R7 is methyl, and n is 3-10.

[0077] Other suitable terephthalate-derived polyester polymers can be end-capped. The end-capping groups of these SRPs are typically, X-(OC2H4) n -(OC3H6) m - (wherein X is a C1-C4 alkyl group, preferably methyl, the -(OC2H4) group and the -(OC3H6) group are arranged in a block, the block consisting of the -(OC3H6) group is bonded to a COO group, n is a number from 40 to 50 based on the molar average, and m is a number from 1 to 10, preferably 1 to 7 based on the molar average)

[0078] Polyester may or may not be biodegradable, and the preferred dirt-releasing polymer is readily biodegradable.

[0079] Examples of suitable polyesters include the TexCare® series supplied by Clariant, which includes the nonionic polymers TexCare® SRN100, SRN170, SRN170 C, SRN170 Terra, SRN172, SRN240, SRN260, SRN260 life, SRN260 SG Terra, SRN UL50, SRN300, SRN325, and the anionic polymers TexCare® SRA100, SRA300, SRA300 F. Examples of suitable polymers also include the polymers in the REPEL-O-TEX® line supplied by Rhodia / Solvay, which include the nonionic polymers REPEL-O-TEX® Crystal, Crystal PLUS, Crystal NAT, SRP6, and the anionic polymer REPEL-O-TEX® SF-2. Other examples of polymers include the WeylClean® series of polymers supplied by WeylChem, which include the nonionic polymers WeylClean® PLN1 and PLN2, and the anionic polymer WeylClean® PSA1. Other examples of polymers include Marloquest® polymers supplied by Sasol, such as Marloquest® SL, HSCB, L235M, U, B, and G82. A preferred polymer is Sorez 100 (from ISP or Ashland).

[0080] Other polyester polymers Other suitable polyester polymers include polyester stain-releasing polymers derived from bio-based 2,5-franzicarboxylic acid and its derivatives.

[0081] Laundry detergent composition The laundry detergent composition contains solid particles of a linear alkylbenzene sulfonate anionic cleaning surfactant.

[0082] Typically, a laundry detergent composition is a fully formulated laundry detergent composition and not a part thereof, such as spray-dried, extruded, or aggregated particles that constitute only a portion of the laundry detergent composition.Typically, a solid composition comprises many chemically different particles, such as spray-dried detergent particles and / or agglomeration-based detergent particles and / or extruded detergent particles, and is combined with one or more, typically two or more, five or more, or even ten or more particles selected from: surfactant particles, including, for example, surfactant aggregates, surfactant extruders, surfactant needles, surfactant noodles, and surfactant flakes; phosphate particles; zeolite particles; silicate particles, especially sodium silicate particles; carbonate particles, especially sodium carbonate particles; polymer particles, such as carboxylate polymer particles, cellulosic polymer particles, starch particles, polyester particles, polyamine particles, terephthalate polymer particles, polyethylene glycol particles; aesthetic particles, such as colored noodles, needles, lamellar particles, and ring-shaped particles; enzyme particles, such as protease granules, amylase granules, lipase granules, cellulase granules, mannanase granules, pectinate lyase granules, xyloglucanase granules, bleaching enzyme granules, and cogranulated products of any of these enzymes. Preferably, these enzyme granules contain sodium sulfate; bleaching particles, for example, percarbonate particles, in particular coated percarbonate particles such as percarbonates coated with carbonates, sulfates, silicates, borosilicates, or any combination thereof; perborate particles; bleaching activator particles such as tetraacetylethylenediamine particles and / or alkyloxybenzene sulfonate particles; bleaching catalyst particles such as transition metal catalyst particles and / or isoquinolinium bleaching catalyst particles; preformed peracid particles, in particular coated preformed peracid particles; filler particles, e.g. For example, sulfate particles and chloride particles; clay particles, e.g., montmorillonite particles and clay and silicone particles; flocculant particles, e.g., polyethylene oxide particles; wax particles, e.g., wax aggregates; silicone particles, whitening agent particles; color transfer prevention particles; dye fixing agent particles; fragrance particles such as fragrance microcapsules and starch-encapsulated fragrance accord particles, or pro-perfume particles such as Schiff base reaction product particles; hue dye particles; chelating agent particles, e.g., chelating agent aggregates; and any combination thereof.

[0083] Suitable laundry detergent compositions include detergent components selected from the following: detergent surfactants such as anionic detergent surfactants, nonionic detergent surfactants, cationic detergent surfactants, zwitterionic detergent surfactants and amphoteric detergent surfactants; polymers such as carboxylate polymers, stain-releasing polymers, anti-redeposition polymers, cellulose polymers and care polymers; bleaching agents such as hydrogen peroxide sources, bleaching activators, bleaching catalysts and preforming peracids; photobleaching agents such as zinc and / or aluminum sulfonated phthalocyanines; enzymes such as proteases, amylases, cellulases and lipases; zeolite builders; phosphate builders; co-builders such as citric acid and citrates; carbonates such as sodium carbonate and sodium bicarbonate; sulfates such as sodium sulfate; silicates such as sodium silicate; chlorides such as sodium chloride; whitening agents; chelating agents; colorants; anti-transfer agents; dye fixatives; fragrances; fabric softeners such as silicone and clay; flocculants such as polyethylene oxide; anti-foaming agents; and any combination thereof.

[0084] Suitable laundry detergent compositions may have low buffering capacity. Such laundry detergent compositions typically have a pre-alkalinity of less than 5.0 g NaOH / 100 g up to pH 9.5. These low-buffering laundry detergent compositions typically contain low concentrations of carbonate.

[0085] Detergent surfactants: Suitable detergent surfactants include anionic detergent surfactants, nonionic detergent surfactants, cationic detergent surfactants, zwitterionic detergent surfactants, and amphoteric detergent surfactants. Suitable detergent surfactants may be linear or branched, substituted or unsubstituted, and derived from petrochemicals or biomaterials.

[0086] Anionic detergent surfactants: Suitable anionic detergent surfactants include sulfonate detergent surfactants and sulfate detergent surfactants.

[0087] Suitable sulfonate cleaning surfactants include methyl ester sulfonates, alpha-olefin sulfonates, alkylbenzene sulfonates, and especially alkylbenzene sulfonates (alkyl benzene sulfonates, especially alkyl benzene sulfonates), preferably C 10~13 Examples include alkylbenzene sulfonates. Preferred alkylbenzene sulfonates (LAS) can be obtained by sulfonating commercially available linear alkylbenzenes (LABs), and this is preferable; preferred LABs include low 2-phenyl LABs, and other preferred LABs include high 2-phenyl LABs, such as those supplied by Sasol under the trademark name Hyblene®.

[0088] Suitable sulfate-cleansing surfactants include alkyl sulfates, preferably C 8~18 Alkyl sulfates, or mainly C 12 Alkyl sulfates are one example.

[0089] Preferred sulfate cleaning surfactants are alkylalkoxylated sulfates, preferably alkylethoxylated sulfates, preferably C 8~18 Alkylalkoxylated sulfate, preferably C 8~18 The alkyl ethoxylated sulfate is preferably an alkyl alkoxylated sulfate having an average degree of alkoxylation of 0.5 to 20, preferably 0.5 to 10, and preferably an alkyl alkoxylated sulfate having an average degree of ethoxylation of 0.5 to 10, preferably 0.5 to 5, more preferably 0.5 to 3, and most preferably 0.5 to 1.5. 8~18 It is an alkylethoxylated sulfate.

[0090] Alkyl sulfates, alkylalkoxylated sulfates, and alkylbenzene sulfonates may be linear or branched, substituted or unsubstituted, and derived from petrochemicals or biomolecules.

[0091] Other suitable anionic cleaning surfactants include alkyl ether carboxylates.

[0092] A suitable anionic detergent surfactant may be in salt form, and suitable counterions include sodium, calcium, magnesium, amino alcohols, and any combination thereof. The preferred counterion is sodium.

[0093] Nonionic cleaning surfactants: Suitable nonionic cleaning surfactants are C8~C 18 Alkyl ethoxylates, e.g., NEODOL® from Shell; C6~C 12 Alkylphenol alkoxylate (preferably, the alkoxylate unit is an ethylene oxy unit, a propylene oxy unit, or a mixture thereof); with an ethylene oxide / propylene oxide block polymer, C 12 ~C 18 Alcohol and C6~C 12 Selected from the group consisting of alkylphenol condensates (e.g., Pluronic® sold by BASF); alkyl polysaccharides, preferably alkyl polyglycosides; methyl ester ethoxylates; polyhydroxy fatty acid amides; ether-capped poly(oxyalkylated) alcohol surfactants; and mixtures thereof.

[0094] Suitable nonionic cleaning surfactants are alkyl polyglucosides and / or alkyl alkoxylated alcohols.

[0095] Suitable nonionic cleaning surfactants include alkylalkoxylated alcohols, preferably C 8~18 Alkylalkoxylated alcohol, preferably C 8~18Examples include alkylethoxylated alcohols, preferably alkylalkoxylated alcohols having an average alkoxylation degree of 1 to 50, preferably 1 to 30, or 1 to 20, or 1 to 10, and preferably alkylalkoxylated alcohols having an average ethoxylation degree of 1 to 10, preferably 1 to 7, more preferably 1 to 5, and most preferably 3 to 7. 8~18 This is an alkylethoxylated alcohol. The alkylalkoxylated alcohol may be linear or branched, and may be substituted or unsubstituted.

[0096] Suitable nonionic cleaning surfactants include secondary alcohol-based cleaning surfactants.

[0097] Cationic cleaning surfactants: Suitable cationic cleaning surfactants include alkylpyridinium compounds, alkylquaternary ammonium compounds, alkylquaternary phosphonium compounds, alkylterical sulfonium compounds, and mixtures thereof.

[0098] A suitable cationic cleaning surfactant is a quaternary ammonium compound having the following general formula: (R)(R1)(R2)(R3)N + X - In the formula, R is a linear or branched chain, substituted or unsubstituted C. 6~18 The alkyl or alkenyl moiety is selected from R1 and R2 independently from each other, from methyl or ethyl moieties, R3 is a hydroxy, hydroxymethyl, or hydroxyethyl moiety, and X is an anion that provides charge neutrality. Preferred anions include halides, preferably chlorides, sulfates, and sulfonates.

[0099] Zwitterionic cleaning surfactants: Suitable zwitterionic cleaning surfactants include amine oxides and / or betaines.

[0100] Polymers: Suitable polymers include carboxylate polymers, dirt-releasing polymers, anti-redeposition polymers, cellulose-based polymers, care polymers, and any combination thereof.

[0101] Carboxylate polymer: The composition may contain a carboxylate polymer such as a maleate / acrylate random copolymer or a polyacrylate homopolymer. Suitable carboxylate polymers include polyacrylate homopolymers having a molecular weight of 4,000 Da to 9,000 Da, and maleate / acrylate random copolymers having a molecular weight of 50,000 Da to 100,000 Da, or 60,000 Da to 80,000 Da.

[0102] Another preferred carboxylate polymer is a copolymer comprising: (i) less than 50 to 98% by weight of structural units derived from one or more monomers containing a carboxyl group; (ii) less than 1 to 49% by weight of structural units derived from one or more monomers containing a sulfonate moiety; and (iii) 1 to 49% by weight of structural units derived from one or more monomers selected from ether-bonded monomers represented by formulas (I) and (II):

[0103] [ka] In formula (I), R0 represents a hydrogen atom or a CH3 group, R represents a CH2 group, a CH2CH2 group or a single bond, X represents a number from 0 to 5, except when R is a single bond, where X represents a number from 1 to 5, and R1 represents a hydrogen atom or C1 to C 20 It is an organic group,

[0104] [ka] In formula (II), R0 represents a hydrogen atom or a CH3 group, R represents a CH2 group, a CH2CH2 group or a single bond, X represents a number from 0 to 5, and R1 represents a hydrogen atom or C1 to C 20 It is an organic group.

[0105] The polymer may preferably have a weight average molecular weight of at least 50 kDa, or even more preferably at least 70 kDa.

[0106] Soil release polymer: The composition may contain a soil release polymer. Suitable soil release polymers have a structure specified by one of the following structures (I), (II), or (III): (I) -[(OCHR 1 -CHR 2 ) a -O-OC-Ar-CO-] d (II) -[(OCHR 3 -CHR 4 ) b -O-OC-sAr-CO-] e (III) -[(OCHR 5 -CHR 6 ) c -OR 7 f Wherein, a, b, and c are from 1 to 200, d, e, and f are from 1 to 50, Ar is 1,4-substituted phenylene, sAr is 1,3-substituted phenylene substituted at the 5-position with SO3Me, Me is Li, K, Mg / 2, Ca / 2, Al / 3, ammonium, mono-, di-, tri-, or tetra-alkylammonium (the alkyl group is C1-C 18 alkyl or C2-C 10 hydroxyalkyl), or a mixture thereof, R 1 , R 2 , R 3 , R 4 , R 5 , and R 6 are independently selected from H or C1-C 18 n- or iso-alkyl, R 7 is linear or branched C1-C 18 ​Alkyl, or linear or branched C2-C 30 Alkenyl, or cycloalkyl group having 5-9 carbon atoms, or C8-C 30 Aryl group, or C6~C 30 It is an arylalkyl group.

[0107] Suitable fouling-releasing polymers are available from Clariant as the TexCare® series polymers, e.g., TexCare® SRN240 and TexCare® SRA300. Other suitable fouling-releasing polymers are available from Solvay as the Repel-o-Tex® series polymers, e.g., Repel-o-Tex® SF2 and Repel-o-Tex® Crystal.

[0108] Anti-re-adhesion polymers: Suitable anti-re-adhesion polymers include polyethylene glycol polymers and / or polyethyleneimine polymers.

[0109] Suitable polyethylene glycol polymers include (i) a hydrophilic backbone containing polyethylene glycol, and (ii) C4-C 25Examples of random graft copolymers include hydrophobic side chains (multiple possible) selected from the group consisting of alkyl groups, polypropylene, polybutylene, vinyl esters of saturated C1-C6 monocarboxylic acids, C1-C6 alkyl esters of acrylic acid or methacrylic acid, and mixtures thereof. Preferred polyethylene glycol polymers have a polyethylene glycol backbone with randomly grafted polyvinyl acetate side chains. The average molecular weight of the polyethylene glycol backbone may be in the range of 2,000 Da to 20,000 Da, or 4,000 Da to 8,000 Da. The molecular weight ratio of the polyethylene glycol backbone to the polyvinyl acetate side chains may be in the range of 1:1 to 1:5 or 1:1.2 to 1:2. The average number of graft sites per ethylene oxide unit may be less than 0.02 or less than 0.016, or it may be in the range of 0.010 to 0.018, or it may be less than 0.010 or it may be in the range of 0.004 to 0.008.

[0110] Suitable polyethylene glycol polymers are described in International Publication No. 2008 / 007320.

[0111] A suitable polyethylene glycol polymer is Sokalan HP22.

[0112] Cellulose polymers: Preferred cellulose polymers are selected from alkylcellulose, alkylalkoxyalkylcellulose, carboxylalkylcellulose, alkylcarboxyalkylcellulose, and sulfoalkylcellulose, and more preferably from carboxymethylcellulose, methylcellulose, methylhydroxyethylcellulose, methylcarboxymethylcellulose, and mixtures thereof.

[0113] A suitable carboxymethylcellulose has a carboxymethyl substitution degree of 0.5 to 0.9 and a molecular weight of 100,000 Da to 300,000 Da.

[0114] A suitable carboxymethylcellulose has a substitution degree greater than 0.65 and a blocking degree greater than 0.45, as described, for example, in International Publication No. 2009 / 154933.

[0115] Care polymers: Suitable care polymers include cationic or hydrophobic modified cellulose polymers. Such modified cellulose polymers can provide anti-friction and dye-locking effects to fabrics during the washing cycle. Suitable cellulose polymers include cationic modified hydroxyethylcellulose.

[0116] Other suitable care polymers include dye lock polymers, such as condensed oligomers produced by the condensation of imidazole and epichlorohydrin, preferably in a 1:4:1 ratio. A suitable commercially available dye lock polymer is Polyquart® FDI (manufactured by Cognis).

[0117] Other suitable care polymers include aminosilicones, which can provide fabric texture and fabric shape retention effects.

[0118] Bleaching agents: Suitable bleaching agents include hydrogen peroxide, bleaching activators, bleaching catalysts, preformed peracids, and any combination thereof. Particularly suitable bleaching agents include combinations of a hydrogen peroxide source and a bleaching activator and / or a bleaching catalyst.

[0119] Hydrogen peroxide source: Suitable sources of hydrogen peroxide include sodium perborate and / or sodium percarbonate.

[0120] Bleaching activators: Suitable bleaching activators include tetraacetylethylenediamine and / or alkyloxybenzene sulfonates.

[0121] Bleaching catalyst: This composition may contain a bleaching catalyst. Suitable bleaching catalysts include oxaziridinium-based bleaching catalysts, transition metal bleaching catalysts, and especially manganese and iron bleaching catalysts. A suitable bleaching catalyst has the following general formula:

[0122] [ka] (In the formula, R 13 It has a structure that corresponds to (selected from the group consisting of 2-ethylhexyl, 2-propylheptyl, 2-butyloctyl, 2-pentylnonyl, 2-hexyldecyl, n-dodecyl, n-tetradecyl, n-hexadecyl, n-octadecyl, iso-nonyl, iso-decyl, iso-tridecyl, and iso-pentadecyl).

[0123] Preforming peracid: A suitable preforming peracid is phthalimidoperoxycaproic acid.

[0124] Enzymes: Suitable enzymes include lipase, protease, cellulase, amylase, and any combination thereof.

[0125] Proteases: Suitable proteases include metalloproteases and / or serine proteases. Examples of suitable neutral or alkaline proteases include subtilisin (EC3.4.21.62), trypsin-type or chymotrypsin-type proteases, and metalloproteases. Suitable proteases include chemically or genetically modified variants of the aforementioned suitable proteases.

[0126] Suitable commercially available protease enzymes from Novozymes A / S (Denmark) include Alcalase®, Savinase®, Primase®, Durazym®, Polarzyme®, Kannase®, Liquanase®, Liquanase Ultra®, and Savinase®. Products sold under the brand names Ultra(registered trademark), Ovozyme(registered trademark), Neutrase(registered trademark), Everlase(registered trademark), and Esperase(registered trademark); products sold by DuPont under the brand names Maxatase(registered trademark), Maxacal(registered trademark), Maxapem(registered trademark), Preferenz(registered trademark) P280, Preferenz(registered trademark) P281, Preferenz(registered trademark) P2018-C, Preferenz(registered trademark) P2081-WE, Preferenz(registered trademark) P2082-EE, and Preferenz(registered trademark) P2083-A / J, as well as Preferenz(registered trademark) series proteases; Properase(registered trademark), Purafect(registered trademark), Purafect Prime(registered trademark), Purafect Ox(registered trademark), FN3(registered trademark), FN4(registered trademark), Excellase(registered trademark), and Purafect OXP(registered trademark); Solvay Products sold by Enzymes under the trade names Opticlean® and Optimase®, and those available from Henkel / Kemira, namely BLAP (the sequence shown in Figure 29 of U.S. Patent No. 5,352,604, having the following mutation S99D+S101R+S103A+V104I+G159S, hereinafter referred to as BLAP), BLAP R (BLAP having S3T+V4I+V199M+V205I+L217D), BLAP X (BLAP having S3T+V4I+V205I), and BLAP F49 (BLAP having S3T+V4I+A194P+V199M+V205I+L217D) (all available from Henkel / Kemira);Also mentioned is Kao's KAP (a subtilisin derived from Bacillus alkalophilus with the A230V+S256G+S259N mutation).

[0127] Suitable proteases are described in International Publication Nos. 2011 / 140316 and 2011 / 072117.

[0128] Amylase: Preferred amylases are preferably the following mutations R118K, D183 * G184 * It is derived from endogenous AA560 alpha-amylase in Bacillus species DSM 12649 having N195F, R320K, and / or R458K. Suitable commercially available amylases include Stainzyme®, Stainzyme® Plus, Natalase, Teramyl®, Teramyl® Ultra, Liquezyme® SZ, Duramyl®, Everest® (all Novozymes), and Spezyme® AA, Preferenz S® series amylases, Purastar® and Purastar® Ox Am, Optisize® HT Plus (all DuPont).

[0129] Suitable amylases are described in International Publication No. 2006 / 002643. Cellulase: Suitable cellulases include those derived from bacteria or fungi. Chemically modified or protein-engineered mutants are also suitable. Suitable cellulases include those derived from the genera Bacillus, Pseudomonas, Humicola, Fusarium, Thielavia, and Acremonium, such as fungal cellulases produced from Humicola insolens, Myceliophthora thermophila, and Fusarium oxysporum.

[0130] Commercially available cellulases include Celluzyme®, Carezyme®, and Carezyme® Premium, Celluclean® and Whitezyme® (Novozymes A / S), the Revitalez® series enzymes (Du Pont), and the Biotouch® series enzymes (AB Enzymes). Preferred commercially available cellulases include Carezyme® Premium and Celluclean® Classic. Preferred cellulases are described in International Publication Nos. 2007 / 144857 and 2010 / 056652.

[0131] Lipase: Suitable lipases include those of bacterial, fungal, or synthetic origin, as well as their variants. Chemically modified or protein-engineered mutants are also suitable. Examples of suitable lipases include those derived from Humicola (synonym Thermomyces), such as H. lanuginosa (T. lanuginosus).

[0132] The lipase may be a “first cycle lipase,” such as the lipase described in International Publication Nos. 2006 / 090335 and 2013 / 116261. In one embodiment, the lipase is a first washing lipase, preferably a variant of wild-type lipase from Thermomyces lanuginosus containing the T231R and / or N233R mutations. Preferred lipases include those sold by Novozymes (Bagsvaerd, Denmark) under the trade names Lipex®, Lipolex®, and Lipoclean®.

[0133] Other suitable lipases include Liprl 139 (e.g., described in International Publication No. 2013 / 171241) and TfulLip2 (e.g., described in International Publication Nos. 2011 / 084412 and 2013 / 033318).

[0134] Other enzymes: Other suitable enzymes include bleaching enzymes such as peroxidases / oxidases, and their variants, including those of plant, bacterial, or fungal origin. A commercially available peroxidase is Guardzyme® (manufactured by Novozymes A / S). Other suitable enzymes include choline oxidases and perhydrolases, such as those used in Gentle Power Bleach®.

[0135] Other suitable enzymes include pectin lyase sold under the trade names X-Pect®, Pctaway® (manufactured by Novozymes A / S (Bagsvaerd, Denmark)), and PrimaGreen® (manufactured by DuPont), and mannanase sold under the trade names Mannaway® (manufactured by Novozymes A / S (Bagsvaerd, Denmark)) and Mannastar® (manufactured by DuPont).

[0136] Zeolite Builder: The composition may contain a zeolite builder. Preferably, the composition may contain 0% to 5% by weight of zeolite builder, or 3% by weight of zeolite builder. The composition may also substantially contain no zeolite builder. "Substantially contain" means "no intentionally added zeolite builder." Typical zeolite builders include zeolite A, zeolite P, and zeolite MAP.

[0137] Phosphate builders: The composition may contain a phosphate builder. The composition may contain 0% to 5% by weight of a phosphate builder, or up to 3% by weight of a phosphate builder. Furthermore, the composition may be substantially free of phosphate builders. "Substantially free" means "no intentionally added phosphate builders." A typical phosphate builder is sodium tripolyphosphate.

[0138] Carbonates: The composition may contain carbonates. The composition may contain 0% to 10% by weight of carbonates, or 5% by weight of carbonates. Furthermore, the composition may be substantially free of carbonates. "Substantially free" means "no carbonates have been intentionally added." Suitable carbonates include sodium carbonate and sodium bicarbonate.

[0139] Silicates: The composition may contain silicates. The composition may contain 0% to 10% by weight of silicates, or 5% by weight of silicates. Preferred silicates are sodium silicates, and particularly preferred are sodium silicates with a Na2O:SiO2 ratio of 1.0 to 2.8, preferably 1.6 to 2.0.

[0140] Sulfate: A suitable sulfate is sodium sulfate.

[0141] Polishing agents: Suitable polishing agents include di-styrene biphenyl compounds (e.g., Tinopal® CBS-X), di-aminostilbenisulfonic acid compounds (e.g., Tinopal® DMS pure Xtra and Blankophor® HRH), pyrazoline compounds (e.g., Blankophor® SN), and coumarin compounds (e.g., Tinopal® SWN).

[0142] Preferred brighteners include sodium 2-(4-styryl-3-sulfophenyl)-2H-naphthol[1,2-d]triazole, disodium 4,4'-bis{[(4-anilino-6-(N-methyl-N-2-hydroxyethyl)amino1,3,5-triazine-2-yl)]amino}stilbene-2-2'disulfonate, disodium 4,4'-bis{[(4-anilino-6-morpholino-1,3,5-triazine-2-yl)]amino}stilbene-2-2'disulfonate, and disodium 4,4'-bis(2-sulfostyryl)biphenyl. A preferred fluorescent brightener is CI fluorescent brightener 260, which may be used in its β or α crystalline form, or in a mixture of these forms.

[0143] Chelating agent: The composition may also contain a chelating agent selected from diethylenetriaminepentaacetate, diethylenetriaminepenta(methylphosphonic acid), ethylenediamine-N'N'-nicuccinic acid, ethylenediaminetetraacetic acid, ethylenediaminetetra(methylenephosphonic acid), and hydroxyethanedi(methylenephosphonic acid). Preferred chelating agents are ethylenediamine-N'N'-nicuccinic acid (EDDS) and / or hydroxyethanediphosphonic acid (HEDP). The composition preferably contains ethylenediamine-N'N'-nicuccinic acid or a salt thereof. Preferably, ethylenediamine-N'N'-nicuccinic acid is of the S,S enantioma type. Preferably, the composition contains 4,5-dihydroxy-m-benzenedisulfonic acid disodium salt. Preferred chelating agents can also function as calcium carbonate crystal growth inhibitors, such as 1-hydroxyethanediphosphonic acid (HEDP) and its salts, N,N-dicarboxymethyl-2-aminopentane-1,5-diacid and its salts, 2-phosphonobutane-1,2,4-tricarboxylic acid and its salts, and combinations thereof.

[0144] Hues: Suitable hues include small molecule dyes, typically classified as blue, violet, red, green, or black, which produce the desired hue either alone or in combination, and which fall under the Color Index (CI) classification of acid dyes, direct dyes, basic dyes, reactive dyes (including their hydrolyzed forms), or solvent dyes or disperse dyes. Preferred such hues include acid violet 50, direct violet 9, 66, and 99, solvent violet 13, and any combination thereof.

[0145] Many chromatic agents that may be suitable for the present invention, such as those described in International Publication No. 2014 / 089386, are known and described in the art.

[0146] Suitable colorants include phthalocyanine and azo dye conjugates, as described in International Publication No. 2009 / 069077.

[0147] Suitable colorants may be alkoxylated. Such alkoxylated compounds can be produced by organic synthesis, which can produce mixtures of molecules having different degrees of alkoxylation. Such mixtures may be used directly to provide a colorant, or they may undergo a purification step to increase the proportion of the target molecule. Suitable colorants include alkoxylated bisazo dyes, such as those described in International Publication No. 2012 / 054835, and / or alkoxylated thiophenezo dyes, such as those described in International Publication Nos. 2008 / 087497 and 2012 / 166768.

[0148] The colorant may be incorporated into the detergent composition as part of a reaction mixture resulting from the organic synthesis of dye molecules in an optional purification step. Such a reaction mixture generally contains the dye molecules themselves and may further contain unreacted starting materials and / or by-products of the organic synthesis pathway. Suitable colorants may be incorporated into colorant dye particles as described in International Publication No. 2009 / 069077.

[0149] Color transfer inhibitors: Suitable color transfer inhibitors include polyamine N-oxide polymers, copolymers of N-vinylpyrrolidone and N-vinylimidazole, polyvinylpyrrolidone, polyvinyloxazolidone, polyvinylimidazole, and mixtures thereof. Preferably, poly(vinylpyrrolidone), poly(vinylpyridinebetaine), poly(vinylpyridine N-oxide), poly(vinylpyrrolidone-vinylimidazole), and mixtures thereof. Suitable commercially available color transfer inhibitors include PVP-K15 and K30 (manufactured by Ashland), Sokalan® HP165, HP50, HP53, HP59, HP56K, HP56, HP66 (manufactured by BASF), Chromabond® S-400, S403E, and S-100 (manufactured by Ashland).

[0150] Fragrances: Suitable fragrances include fragrance materials selected from the following groups: (a) fragrance materials having a ClogP of less than 3.0 and a boiling point of less than 250°C (Quadrant 1 fragrance materials), (b) fragrance materials having a ClogP of less than 3.0 and a boiling point of 250°C or higher (Quadrant 2 fragrance materials), (c) fragrance materials having a ClogP of 3.0 or higher and a boiling point of less than 250°C (Quadrant 3 fragrance materials), (d) fragrance materials having a ClogP of 3.0 or higher and a boiling point of 250°C or higher (Quadrant 4 fragrance materials), and (e) mixtures thereof.

[0151] The fragrance may preferably be in the form of a fragrance delivery technology. Such delivery technologies further stabilize and enhance the adhesion and release of the fragrance from the washed fabric. Using such fragrance delivery technologies, the lifespan of fragrance release from the washed fabric can also be further extended. Suitable fragrance delivery technologies include fragrance microcapsules, pro-fragrances, polymer-assisted delivery, molecular-assisted delivery, fiber-assisted delivery, amine-assisted delivery, cyclodextrins, starch-encapsulated accords, zeolites and other inorganic carriers, and any combination thereof. Suitable fragrance microcapsules are described in International Publication No. 2009 / 101593.

[0152] Silicones: Suitable silicones include polydimethylsiloxanes and aminosilicones. Suitable silicones are described in International Publication No. 2005 / 075616.

[0153] Process for producing a solid composition: Typically, the particles of the composition can be prepared by any suitable method. For example: spray drying, agglomeration, extrusion, and any combination thereof.

[0154] Typically, a suitable spray drying process includes the steps of forming an aqueous slurry mixture and transferring it to a pressure nozzle through at least one pump, preferably two pumps. The aqueous slurry mixture is sprayed into a spray drying tower to dry the aqueous slurry mixture and form spray-dried particles. Preferably, the spray drying tower is a counter-flow spray drying tower, but a parallel-flow spray drying tower may also be suitable.

[0155] Typically, the spray-dried powder is subjected to cooling, for example, by airlift. Typically, the spray-dried powder is subjected to particle size classification, for example, by sieving, to obtain a desired particle size distribution. Preferably, the spray-dried powder has a particle size distribution such that the weight-average particle size is in the range of 300 to 500 micrometers, and less than 10% by weight of the spray-dried particles have a particle size greater than 2360 micrometers.

[0156] As described in International Publication No. 2009 / 158162, it may be preferable to heat the aqueous slurry mixture to a high temperature before spraying it into a spray drying tower.

[0157] Anionic surfactants, such as linear alkylbenzene sulfonates, may preferably be introduced into the spray-drying process after the step of forming the aqueous slurry mixture: for example, introducing an acid precursor into the aqueous slurry mixture after pumping, as described in International Publication No. 2009 / 158449.

[0158] As described in International Publication No. 2013 / 181205, it may be preferable to introduce a gas such as air into the spray drying process after the step of forming the aqueous slurry.

[0159] When any inorganic components, such as sodium sulfate and sodium carbonate, are present in the aqueous slurry mixture, it may be preferable to pulverize them to a small particle size as described in International Publication No. 2012 / 134969.

[0160] Typically, a preferred flocculation process includes contacting a cleaning component, such as a cleaning surfactant, e.g., linear alkylbenzene sulfonate (LAS) and / or alkyl alkoxylated sulfate, with an inorganic material such as sodium carbonate and / or silica in a mixer. The flocculation process may also be an in-situ neutralization flocculation process, in which an acid precursor of the cleaning surfactant, such as LAS, is contacted with an alkaline substance such as sodium carbonate and / or sodium hydroxide in a mixer, and the acid precursor of the cleaning surfactant is neutralized by the alkaline substance to form a cleaning surfactant during the flocculation process.

[0161] Other suitable detergent components that can be aggregated include polymers, chelating agents, bleach activators, silicones, and any combination thereof.

[0162] The agglomeration process may be a high, medium, or low shear agglomeration process, and high, medium, or low shear mixers may be used accordingly. The agglomeration process may also be a multi-stage agglomeration process in which two or more mixers, for example, a high-shear mixer combined with a medium or low-shear mixer, are used. The agglomeration process may be a continuous process or a batch process.

[0163] It may be preferable to subject the aggregates to a drying process, such as a fluidized bed drying process. It may also be preferable to subject the aggregates to a cooling process, such as a fluidized bed cooling process.

[0164] Typically, the aggregates are subjected to particle size classification, such as fluidized bed elutriation and / or sieving, to obtain a desired particle size distribution. Preferably, the aggregates have a weight-average particle size in the range of 300 to 800 micrometers, with a particle size distribution such that less than 10% by weight of the aggregates has a particle size of less than 150 micrometers and less than 10% by weight of the aggregates has a particle size of more than 1200 micrometers.

[0165] It is sometimes preferable to recirculate fine powders and oversized aggregates back into the agglomeration process. Typically, oversized particles are subjected to a size reduction process such as grinding and then recirculated back to an appropriate location in the agglomeration process, such as a mixer. Typically, fine powders are recirculated back to an appropriate location in the agglomeration process, such as a mixer.

[0166] It may be preferable that components such as polymers and / or nonionic detergent surfactants and / or fragrances are sprayed onto base detergent particles such as spray-drying base detergent particles and / or agglomerating base detergent particles. Typically, this spraying process is carried out in a rotary drum mixer.

[0167] Fabric Washing Method: A fabric washing method comprises the steps of bringing a solid composition into contact with water to form a washing solution, and washing the fabric in the washing solution. Typically, the washing solution has a temperature of greater than 0°C to 90°C, greater than 0°C to 60°C, greater than 0°C to 40°C, greater than 0°C to 30°C, or greater than 0°C to 20°C. The fabric may be brought into contact with water before, after, or simultaneously with the contact of the solid composition with water. Typically, the washing solution is formed by bringing laundry detergent into contact with water in an amount such that the concentration of the laundry detergent composition in the washing solution is 0.2 g / L to 20 g / L, or 0.5 g / L to 10 g / L, or 5.0 g / L. The fabric washing method can be carried out in a front-loading automatic washing machine, a top-loading automatic washing machine including a high-efficiency automatic washing machine, or a suitable hand-washing container. Typically, the cleaning solution contains 90 liters or less, or 60 liters or less, or 15 liters or less, or 10 liters or less of water. Typically, 200 g or less, or 150 g or less, or 100 g or less, or 50 g or less of a laundry detergent composition is brought into contact with water to form the cleaning solution.

[0168] Method for producing solid particles of linear alkylbenzene sulfonate anionic cleaning surfactants. This method yields a polycationic salt of linear alkylbenzenesulfonic acid. The polycationic salt of linear alkylbenzenesulfonic acid is (a) A process step of partially neutralizing linear alkylbenzenesulfonic acid with a magnesium neutralizing agent to form partially magnesium-neutralized linear alkylbenzenesulfonic acid, (b) A process step of completely neutralizing the partially magnesium-neutralized linear alkylbenzene sulfonic acid from step (a) with a sodium neutralizing agent to form a polycationic salt of linear alkylbenzene sulfonic acid containing both magnesium cations and sodium cations, and obtained by the process step of (b).

[0169] Preferably, the magnesium neutralizing agent is selected from magnesium bicarbonate, magnesium carbonate, magnesium hydroxide carbonate, magnesium hydroxide, and any combination thereof.

[0170] Preferably, the sodium neutralizing agent is selected from sodium bicarbonate, sodium carbonate, sodium hydroxide, and any combination thereof.

[0171] This process is a particularly effective method for producing the particles of the present invention. [Examples]

[0172] (Example 1) Eleven linear alkylbenzene sulfonate (LAS) anionic detergent surfactant flakes were prepared in different ratios of linear alkylbenzene sulfonate magnesium (MgLAS2) anionic detergent surfactant and linear alkylbenzene sulfonate sodium (NaLAS) anionic detergent surfactant.

[0173] All LAS flakes were prepared by drying a pre-made LAS paste. The LAS paste was prepared by neutralizing linear alkylbenzene sulfonic acid (HLAS) with magnesium hydroxide (Mg(OH)2) and / or sodium hydroxide (NaOH). In the case of pastes and flakes containing both MgLAS2 and NaLAS, the order of addition of the hydroxide salts was MgOH2, followed by NaOH, to avoid precipitation of MgOH2 before complete neutralization of HLAS. The grade of HLAS used contained trace amounts of sulfuric acid (H2SO4), which, due to its lower pKa value, undergoes neutralization before HLAS. Therefore, the reaction that occurs is as follows: Neutralization using only Mg(OH)2 (see paste / flake A below) 1. H2SO4 + Mg(OH)2 → MgSO4 + 2H2O 2. 2HLAS+Mg(OH)2→Mg(LAS)2+2H2O Neutralization with both Mg(OH)2 and NaOH (pastes / flakes B-J below) 1. H2SO4 + Mg(OH)2 → MgSO4 + 2H2O 2. 2HLAS+Mg(OH)2→Mg(LAS)2+2H2O 3. HLAS + NaOH → NaLAS + H2O Neutralization using NaOH alone (see paste / flake K below) 1. H2SO4+2 NaOH→Na2SO4+2 H2O 2. HLAS + NaOH → NaLAS + H2O

[0174] All 11 pastes were prepared in beakers equipped with an overhead stirrer to facilitate and complete the neutralization reaction and paste homogenization. The impeller rotation speed varied from 300 RPM to 1000 RPM, depending on the change in paste thickness observed as HLAS was neutralized by LAS. The order of addition for all pastes listed below is as follows:

[0175] For pastes containing Mg(LAS)2, (AJ): 1. Water (liquid) 2. Mg(OH)2 (solid) 3. HLAS (liquid) 4. NaOH (aqueous solution) (if present) 5. Polycarboxylate polymer (liquid) 6. Sodium sulfate (solid) For pastes that do not contain Mg(LAS)2, (K): 1. Water (liquid) 2. NaOH (aqueous solution) 3. HLAS (liquid) 4. Polycarboxylate polymer (liquid) 5. Sodium sulfate (solid)

[0176] [Table 1]

[0177] During manufacturing, LAS paste was spread onto a silicone baking mat in a layer up to 5 mm thick. The silicone baking mat with the LAS paste was then placed in an oven set to 110°C and dried for 16 hours. After 16 hours, the LAS paste was removed from the silicone baking mat as large flakes. These large flakes were then ground on a sieve with an opening size of 1180 μm and a pan at the bottom, with optionally sieves with opening sizes of 600 μm and 425 μm below. In this way, dried flakes with particle sizes of 0-425 μm, 425-600 μm, 600-1180 μm, and 0-1180 μm were obtained.

[0178] [Table 2]

[0179] All 11 flakes were placed in unique unitized solid composition matrices of laundry detergent, and the compositions are shown in Table 1-C. Each composition matrix was unitized by surrounding the composition matrix in nonwoven polyvinyl alcohol. All 11 unitized solid composition matrices of laundry detergent were placed in a climate chamber under conditions of 25°C and 60% relative humidity for 12 weeks. After 12 weeks, each unitized matrix was evaluated for the free flow of the solid laundry detergent composition within it. After evaluation, the relative humidity of the solid laundry detergent composition was measured to be (60±2)%RH, thus indicating that an equilibrium state had been achieved.

[0180] [Table 3]

[0181] To evaluate the physical flow properties of the powder composition matrix after storage at 60% relative humidity, the nonwoven polyvinyl alcohol was removed and the powder was poured onto a sieve with an opening size of 2 mm. After shaking for 30 seconds, the mass on the sieve was measured, and the mass that passed through the sieve was also measured. The results are shown in Table 1-D.

[0182] Since the powder in each unitized matrix contained 45.4% by weight of LAS flakes, if the amount of powder on a 2mm sieve is less than 45.4% by weight, it means that not all LAS flakes contribute to solidified particles larger than 2mm. Therefore, the present invention considers flakes present in any powder remaining on a 2mm sieve in an amount of less than 45.4% by weight.

[0183] [Table 4]

[0184] Flakes A, B, C, D, E, F, and G were all observed to be portions of the powder matrix that accounted for less than 45.4% of their total mass remaining on a 2 mm sieve. Flakes H, I, J, and K were all portions of the powder matrix that accounted for more than 45.4% of their total mass remaining on a 2 mm sieve.

[0185] (Example 2) Two linear alkylbenzene sulfonate (LAS) anionic detergent surfactant flakes were prepared according to the method described in Example 1. Polycarboxylate polymers were omitted from these flakes and their paste precursors. One of the flakes and its paste precursor used an HLAS source classified as having a high level of 2-phenyl isomers in the non-sulfonated linear alkylbenzene (LAB) precursor, while the other flake used an HLAS source classified as having a low level of 2-phenyl isomers in the LAB precursor.

[0186] [Table 5]

[0187] [Table 6]

[0188] Two flakes were placed in a unique unitized solid composition matrix of laundry detergent, and the composition is shown in Table 2-C. Each composition matrix was unitized by surrounding the composition matrix in nonwoven polyvinyl alcohol. Both unitized solid composition matrices of laundry detergent were placed in a climate chamber under conditions of 25°C and 60% relative humidity for 14 weeks. After 14 weeks, each unitized matrix was evaluated for the free flow of the solid composition of laundry detergent within it. After evaluation, the relative humidity of the solid composition of laundry detergent was measured to be (60±2)%RH, thus indicating that an equilibrium state had been achieved.

[0189] [Table 7]

[0190] To evaluate the physical flow properties of the powder composition matrix after storage at 60% relative humidity, the nonwoven polyvinyl alcohol was removed and the powder was poured onto a sieve with an opening size of 2 mm. After shaking for 30 seconds, the mass on the sieve was measured, and the mass that passed through the sieve was also measured. The results are shown in Table 2-D.

[0191] [Table 8]

[0192] Flakes containing the low-2-phenyl isomer were observed to function particularly well.

[0193] (Example 3) The dissolution dynamics of flakes A, B, C, D, E, F, and K prepared in Example 1 were analyzed by UV-Vis spectrophotometric analysis. For each measurement, 0.44 grams of "fresh" flake were dissolved in 800 mL of deionized water under mechanical stirring. The sample for each flake was stirred for 24 hours, after which wavelength scanning experiments were performed to obtain absorbance values ​​for each flake over the wavelength range of 190–400 nm. Table 3-A shows the absorbance (absorbance units, AU) for each flake at a wavelength of 250 nm.

[0194] [Table 9]

[0195] Next, different samples from each flake were measured for absorbance at a wavelength of 250 nm at intervals of 1, 2, 5, and 10 minutes over a 10-minute period. The measured absorbance values ​​were then calculated as the percentage of dissolution measured after 24 hours, as shown in Table 3-A. The results are shown in Table 3-B.

[0196] [Table 10] * A = "UV-Vis spectrophotometric absorbance at 250 nm [AU]" ** D = "Dissolution percentage [%] compared to dissolution in 24 hours according to Table 3-A"

[0197] After 10 minutes, flakes B, C, D, E, F, and K were observed to have a dissolution percentage of at least 60% of their respective 24-hour dissolution values.

[0198] 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."

Claims

1. Solid particles of a linear alkylbenzene sulfonate anionic detergent surfactant suitable for use in laundry detergent compositions, wherein the particles contain more than 50% to 100% by weight of a polycationic salt of linear alkylbenzene sulfonic acid containing both magnesium cations and sodium cations, and the weight ratio of the magnesium salt of linear alkylbenzene sulfonic acid to the sodium salt of linear alkylbenzene sulfonic acid is in the range of 0.6:1 to 9:

1.

2. The particles according to claim 1, wherein the weight ratio of the magnesium salt of linear alkylbenzenesulfonic acid to the sodium salt of linear alkylbenzenesulfonic acid is in the range of 0.9:1 to 7:

1.

3. The particles according to claim 1 or 2, wherein the weight ratio of the magnesium salt of linear alkylbenzenesulfonic acid to the sodium salt of linear alkylbenzenesulfonic acid is in the range of 1:1 to 5:

1.

4. The particles according to any one of claims 1 to 3, wherein the particles contain 80% to 95% by weight of the polycationic salt of a linear alkylbenzene sulfonic acid.

5. The particle according to any one of claims 1 to 4, wherein the particle contains more than 0% by weight to 40% by weight of an inorganic salt.

6. The particle according to claim 5, wherein the inorganic salt is selected from carbonates, chlorides, magnesium salts, silicates, sulfates, zeolites, and any combination thereof.

7. The particles according to claim 5 or 6, wherein the inorganic salt is selected from magnesium carbonate, magnesium sulfate, sodium carbonate, sodium sulfate, and any combination thereof.

8. The particles according to any one of claims 1 to 7, wherein the particles contain more than 0% by weight of a polymer and up to 20% by weight of a polymer.

9. The particles according to claim 8, wherein the polymer is selected from modified polysaccharide polymers, polycarboxylate polymers, polyethylene glycol polymers, polyethyleneimine polymers, silicone polymers, terephthalate polymers, other polyester polymers, and any combination thereof.

10. The particles according to any one of claims 1 to 9, wherein the linear alkylbenzene sulfonic acid has a 2-phenyl isomer content of 15% to 20% by weight.

11. The particle according to any one of claims 1 to 10, wherein the particle is in the form of a flake.

12. A laundry detergent composition comprising the particles described in any one of claims 1 to 11.

13. The polycationic salt of linear alkylbenzenesulfonic acid is (a) A process step of partially neutralizing linear alkylbenzenesulfonic acid with a magnesium neutralizing agent to form partially magnesium-neutralized linear alkylbenzenesulfonic acid, A method for producing the particles according to any one of claims 1 to 11, comprising: (b) a process step of completely neutralizing the partially magnesium-neutralized linear alkylbenzene sulfonic acid from process step (a) with a sodium neutralizing agent to form the polycationic salt of the linear alkylbenzene sulfonic acid containing both magnesium cations and sodium cations.

14. The method according to claim 13, wherein the magnesium neutralizing agent is selected from magnesium bicarbonate, magnesium carbonate, magnesium hydroxide carbonate, magnesium hydroxide, and any combination thereof.

15. The method according to claim 13 or 14, wherein the sodium neutralizing agent is selected from sodium bicarbonate, sodium carbonate, sodium hydroxide, and any combination thereof.

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