Liquid compositions with perfume capsules

Abstract

A unit dose article comprising a water-soluble film creating a first compartment and a second compartment, wherein the first compartment comprises a first liquid composition, wherein the first liquid composition comprises: i) greater than 16% to 90% of an alcohol alkoxylated nonionic surfactant by weight of the first composition; ii) 1% to 50% of a perfume capsule by weight of the first liquid composition; iii) 1% to 25% of water by weight of the first liquid composition; and iv) less than 5% of an anionic surfactant by weight of the first liquid composition.

Description

Technical Field

[0001] This invention belongs to the field of liquid compositions comprising fragrance capsules. The invention also relates to unit-dose articles comprising fragrance capsules and methods for washing clothing using the liquid compositions or unit-dose articles of the invention. Background Technology

[0002] Laundry detergent compositions typically contain fragrances. Sometimes the fragrance is encapsulated in capsules that protect it and release it at different stages, including after washing. A problem with laundry detergent compositions containing fragrance capsules is that the fragrance can leak from the capsules, reducing the amount of fragrance available after washing. Another negative impact may be that the fragrance component can oxidize other components of the laundry detergent composition, affecting the amount of active material and even the appearance of the product. These problems can be more pronounced when laundry detergent compositions are encapsulated in water-soluble unit-dose products. Unit-dose products appear to have more design constraints than other laundry detergents due to their increased level of complexity, requiring the composition to have low water content and compatibility with water-soluble membranes. In the case of multi-compartment water-soluble products, the migration of components from one compartment to another also needs to be considered.

[0003] The object of the present invention is to provide a composition comprising a fragrance capsule, wherein leakage of fragrance from the capsule is reduced. Summary of the Invention

[0004] According to a first aspect of the invention, a unit dose article is provided, the unit dose article comprising a liquid composition comprising a flavoring capsule.

[0005] According to a second aspect of the present invention, a method for washing fabrics using the unit dose product of the present invention is provided.

[0006] According to a third aspect of the invention, the use of a non-aqueous solvent according to the invention for reducing leakage of fragrance from fragrance capsules is provided.

[0007] The elements of the compositions described in relation to the first aspect of the invention are modified as necessary and applied to the second and third aspects of the invention. Detailed Implementation

[0008] As used herein, when used in claims or the specification, the articles including “the,” “an,” and “a” are understood to refer to one or more substances protected or described in the claims.

[0009] As used herein, the term "including" is intended to be non-restrictive.

[0010] As used herein, the terms “substantially free” or “substantially absent” mean that an ingredient is completely absent or exists only as an impurity or unintended byproduct of another ingredient in the smallest possible quantity. A composition that is “substantially free” or “absent” means that the composition contains less than about 0.5%, 0.25%, 0.1%, 0.05%, or 0.01%, or even 0%, of the component by weight of the composition.

[0011] Unless otherwise specified, all percentages, ratios, and proportions used herein are by weight percentage of the composition. Unless otherwise expressly stated, all average values ​​are by weight of the composition.

[0012] Unless otherwise specified, all measurements were performed at 25°C.

[0013] Unless otherwise specified, all component or composition levels refer to the active portion of the component or composition and do not include impurities, such as residual solvents or byproducts, that may be present in commercially available sources of such components or compositions.

[0014] This disclosure relates to a unit-dose article comprising an aqueous membrane that generates a first compartment and a second compartment, wherein the first compartment comprises a first liquid composition comprising:

[0015] i) 16% to 90% by weight of the first liquid composition of an alcohol alkoxylated nonionic surfactant;

[0016] ii) Flavor capsules comprising 1% to 50% by weight of the first liquid composition;

[0017] iii) 1% to 25% water by weight of the first liquid composition; and

[0018] iv) Less than 5%, preferably less than 3%, and more preferably less than 1% of anionic surfactant by weight of the first liquid composition.

[0019] Alkyl alkoxylated nonionic surfactants are described in further detail below. The first liquid composition comprises 16% to 90%, preferably 20% to 90%, more preferably 40% to 90% by weight of the first liquid composition, of an alcohol alkoxylated nonionic surfactant. Alkyl alkoxylated nonionic surfactants have been found to reduce leakage of fragrances from fragrance capsules. The first liquid composition may contain a nonaqueous solvent selected from the group consisting of polyglycerol, alkoxylated polyols or alkoxylated polyol ester solvents, and mixtures thereof. Additional nonaqueous solvents may be added to the first liquid composition. Additional nonaqueous solvents include 1,2-propanediol, dipropylene glycol, tripropylene glycol, sorbitol, polyethylene glycol, or mixtures thereof.

[0020] Preferably, the first liquid composition contains less than 5%, more preferably less than 3%, more preferably less than 1% of an additional non-aqueous solvent. More preferably, the first liquid composition is free of an additional non-aqueous solvent selected from the group consisting of 1,2-propanediol, dipropylene glycol, tripropylene glycol, sorbitol, polyethylene glycol, and mixtures thereof. While such solvents may be preferred for optimizing film plasticizing properties, they can suppress the beneficial fragrance leakage protection provided by the alcohol alkoxylated nonionic surfactant according to the invention. Preferably, the first liquid composition is free of 1,2-propanediol. Preferably, the first liquid composition is free of cationic surfactants.

[0021] The first liquid composition may contain glycerol. The first liquid composition may be substantially free of polyethylene glycol with a number average molecular weight of 200 Da to 1000 Da. The first liquid composition may contain glycerol and polyethylene glycol with a number average molecular weight of 200 Da to 1000 Da, preferably, the weight ratio of glycerol to polyethylene glycol with a number average molecular weight of 200 Da to 1000 Da is at least 1.5, preferably at least 2.

[0022] The first liquid composition of the present invention may comprise an ethylene oxide-propylene oxide triblock copolymer having one of the following structures:

[0023] a) An ethylene oxide-propylene oxide-ethylene oxide (EO / PO / EO) triblock copolymer, wherein the copolymer comprises a first EO block, a second EO block and a PO block, and wherein the first EO block and the second EO block are connected to the PO block;

[0024] b) A propylene oxide-ethylene oxide-propylene oxide (PO / EO / PO) triblock copolymer, wherein the copolymer comprises a first PO block, a second PO block and an EO block, and wherein the first PO block and the second PO block are connected to the EO block.

[0025] The first liquid composition of the present invention may comprise an alcohol alkoxylated nonionic surfactant and an ethylene oxide-propylene oxide triblock copolymer.

[0026] The liquid composition of the present invention may contain polypropylene glycol with a number average molecular weight of 700 Da to 5000 Da, preferably 700 Da to 4000 Da, and more preferably 700 Da to 2500 Da.

[0027] The liquid compositions of the present invention may comprise a non-aqueous solvent selected from the group consisting of: polyglycerol, alkoxylated polyols or alkoxylated polyol ester solvents, and mixtures thereof; ethylene oxide-propylene oxide triblock copolymers; glycerol and / or polypropylene glycol with a number average molecular weight of 700 Da to 5000 Da.

[0028] The first liquid composition comprises 1% to 50%, preferably 1% to 30%, more preferably 3% to 10% of flavor capsules by weight of the first liquid composition.

[0029] The first liquid composition contains at least 1% to 25%, preferably less than 20%, and more preferably 5% to 15% water by weight of the liquid composition.

[0030] As previously stated, the first liquid composition contains less than 5%, preferably less than 3%, more preferably less than 1% anionic surfactant by weight of the first liquid composition, and most preferably contains no anionic surfactant. It is not intended to be theoretically construed as the presence of anionic surfactant is believed to impair the leak-proof benefits provided by the alcohol-alkoxylated nonionic surfactant of the compositions of the present invention.

[0031] Alkylated nonionic surfactants

[0032] Suitable alcohol alkoxylated nonionic surfactants may have the formula RO-(AO)nH, where: R is a primary or secondary C4 to C64-C ... 18 Preferably C6 to C 16 More preferably C6 to C 14 Branched or straight-chain alkyl chains; AO is an ethoxy, propoxy, or butoxy unit or a mixture thereof, and wherein n is 1 to 30, preferably 3 to 15, more preferably 5 to 12, and even more preferably 6 to 10. The preferred R chain used herein is C6 to C6. 16 The AO group is a straight-chain or branched alkyl chain, preferably a branched alkyl chain. The preferred AO group is an ethoxy group. n is the average degree of alkoxylation and is preferably between 6 and 10. Most preferably, R is a branched C6 to C16 alkyl chain containing an average of between 6 and 10 ethoxy groups.

[0033] Alternatively, R is a branched C6 to C16 alkyl chain containing an average of 6 to 10 alkoxy groups selected from ethoxy groups, propoxy groups, and mixtures thereof. The AO distribution can be broad or narrow (also known as peaked) AO distribution.

[0034] Suitable branched alkoxylated alcohols can be selected from the group consisting of: C6-C 16 Alkyl branched alkoxylated alcohols and mixtures thereof. Branched alkoxylated alcohols can be derived from C6-C... 16 Alkoxylation of alkyl branched alcohols, which are selected from the group consisting of: C6-C4 branched groups having one or more C1-C4 branched groups. 16 Primary alcohols, or C6-C 16 Secondary alcohol.

[0035] Branched primary alcohol alkoxylates

[0036] Through C6-C 16 A primary monohydric alcohol is defined as a primary monohydric alcohol whose main chain has a total of 6 to 16 carbon atoms. (C6-C) 16 The monohydric primary alcohol may be selected from the group consisting of: ethylhexanol, propylhexanol, dimethylhexanol, trimethylhexanol, methylheptanol, ethylheptanol, propylheptanol, dimethylheptanol, trimethylheptanol, methyl octanol, ethyl octanol, propyl octanol, butyl octanol, dimethyl octanol, trimethyl octanol, methyl nonanol, ethyl nonanol, propyl nonanol, butyl nonanol, dimethyl nonanol, trimethyl nonanol, methyl decanol, ethyl decanol, propyl decanol, butyl decanol, dimethyl decanol, trimethyl decanol, methyl undecyl alcohol, ethyl undecyl alcohol, propyl undecyl alcohol, butyl undecyl alcohol, dimethyl undecyl alcohol, trimethyl undecyl alcohol, methyl dodecyl alcohol, ethyl dodecyl alcohol, propyl dodecyl alcohol, butyl dodecyl alcohol, dimethyl dodecyl alcohol, trimethyl dodecyl alcohol, and mixtures thereof.

[0037] C6-C 16 The monohydric primary alcohol can be selected from the group consisting of: ethylhexanol, propylhexanol, ethylheptanol, propylheptanol, ethyloctanol, propyloctanol, butyloctanol, ethylnonanol, propylnonanol, butylnonanol, and mixtures thereof.

[0038] Preferably, C4-C 10 The primary monohydric alcohols are selected from the group consisting of: ethylhexanol, propylhexanol, ethylheptanol, propylheptanol, and mixtures thereof.

[0039] In branched alkoxylated primary alcohols, the C1-C4 branched groups are preferably substituted at the C2 position, as measured from the hydroxyl group of the starting alcohol, to C6-C. 16 A primary monohydric alcohol. Optionally, additional branching groups may be present further downstream of the alkyl chain.

[0040] The particularly preferred branched monohydric alcohol is the Gerbert monohydric alcohol. (C6-C) 16 The most preferred primary alcohols are ethylhexanol and propylheptanol.

[0041] Branched alkoxylated alcohols may contain 1 to 30, preferably 2 to 15, more preferably 3 to 12, even more preferably 4 to 9 ethoxylated units, and optionally 1 to 9, preferably 2 to 7, more preferably 3 to 6 propoxylated units.

[0042] Branched alkoxylated alcohols are preferably 2-ethylhexyl-1-ols ethoxylated to a degree of 4 to 6 and propoxylated to a degree of 4 to 6, such as Guerbert 2-ethylhexyl-1-ol. More preferably, the alcohol is propoxylated first and then ethoxylated. Another preferred branched alkoxylated alcohol is a 2-alkyl-1-alkanol, such as an alkoxylated C-cell having 1 to 14, preferably 4 to 12, more preferably 6 to 10 ethoxylated or ethoxylated-propoxylated units. 10 Gerbert alcohol, preferably wherein the alcohol is first propoxylated and then ethoxylated.

[0043] A suitable, non-limiting example of a branched alkoxylated alcohol is, for example, Ecosurf, which is commercially available from Dow Chemical Company (DOW). ® EH3, EH6 and EH9 ethoxylated guerbert alcohols, as well as Lutensol, which is available from BASF. ® XP-alkoxylated Gelbertol and Lutensol ® XL ethoxylated Guerbert alcohol.

[0044] Straight-chain / straight-branched primary alcohol alkoxylates

[0045] Alkoxylated alcohol nonionic surfactants can also be straight-chain alkoxylated primary alcohol nonionic surfactants or mixtures of straight-chain alkoxylated alcohol nonionic surfactants and branched-chain alkoxylated alcohol nonionic surfactants. Preferred straight-chain alcohol alkoxylated nonionic surfactants or mixed straight-chain / branched-chain alcohol alkoxylated nonionic surfactants are C8 to C96-C ... 18 Preferably C8 to C 16 C, more preferably 10 To C 15 The most preferred option is C. 12 To C 15 Alkoxylated nonionic surfactants with straight-chain alkyl chains or a mixture of straight-chain / branched alkyl chains.

[0046] A non-limiting example of a suitable linear primary alkoxylated nonionic surfactant or a mixture of linear / branched primary alkoxylated nonionic surfactants for use in this article is Dobanol. ® 91-2.5 (R is C9 and C) 11 Mixtures of alkyl chains, n=2.5), Dobanol ® 91-5 (R is C9 to C) 11 Mixtures of alkyl chains, n=5); Dobanol ® 91-10 (R is C9 to C) 11A mixture of alkyl chains, n is 10); Greenbentine DE60 (R is a C10 straight-chain alkyl chain, n is 6); Marlipal 10-8 (R is a C10 straight-chain alkyl chain, n is 6). 10 Straight-chain alkyl chain, n is 8); Neodol 91-8 (R is C9 to C8) 11 Mixtures of alkyl chains, n = 8); Empilan ® KBE21 (R is C) 12 and C 14 A mixture of alkyl chains, n = 21); Lutensol ON30 (R is C 10 Straight-chain alkyl chain, n is 3); LutensolON50 (R is C 10 Straight-chain alkyl chain, n is 5); Lutensol ON70 (R is C 10 Straight-chain alkyl chain, n is 7); Novel 610-3.5 (R is C6 to C7) 10 A mixture of straight-chain alkyl chains, n is 3.5); Novel 810FD-5 (R is C8 to C5). 10 A mixture of straight-chain alkyl chains, n = 5); Novel 10⁻⁴ (R is C₁₀) 10 Straight-chain alkyl chain, n is 4); Novel 1412-3 (R is C 12 To C 14 A mixture of straight-chain alkyl chains (n=3); Lialeth ® 11-5 (R is C) 11 Straight-chain alkyl chain (n=5); Lialeth ® 11-21 (R represents straight chains and branches, C represents branches) 11 Mixtures of alkyl chains, n=21), 25-7 Tomadol or mixtures thereof.

[0047] Branched secondary alcohol alkoxylates

[0048] Alternatively, the branched alkoxylated alcohol can be a branched secondary alkoxylated alcohol having a branch at the C1 position, as measured from the hydroxyl group of the starting alcohol. The alkoxylated nonionic surfactant can be a secondary alcohol ethoxylate, such as, for example, Tergitol having the general formula shown below and commercially available from Dow Chemical Company. ™ -15-S surfactant.

[0049] Tergitol 15-S surfactant

[0050] Preferred secondary alcohol ethoxylated surfactants have 3-9 EO units.

[0051] Another suitable alkoxylated nonionic surfactant is an alkylethoxyalkoxy alcohol, preferably wherein the alkoxy moiety of the molecule is propoxy, butoxy, or propoxy-butoxy. More preferably, an alkylethoxyalkoxy alcohol has the formula (II):

[0052] Equation (II)

[0053] in:

[0054] R is a branched or unbranched alkyl group having 8 to 16 carbon atoms;

[0055] R 1 It is a branched or unbranched alkyl group having 1 to 5 carbon atoms;

[0056] n is 1 to 10; and m is 6 to 35.

[0057] R is preferably 12 to 15, more preferably 13 carbon atoms. 1 Preferably, it is a branched alkyl group having 1 to 2 carbon atoms. n is preferably 1 to 5. m is preferably 8 to 25. Preferably, the weight-average molecular weight of the ethoxylated alkoxylated nonionic surfactant of formula (II) is 500 g / mol to 2000 g / mol, more preferably 600 g / mol to 1700 g / mol, and most preferably 800 g / mol to 1500 g / mol.

[0058] Suitable examples of primary and secondary linear and branched ethoxylated and alkoxylated nonionic surfactants are described in Chapter 7 of Surfactant Science and Technology, 3rd Edition, Wiley Press, ISBN 978-0-471-68024-6.

[0059] Most preferably, the alkoxylated alcohol nonionic surfactant is selected from the group consisting of: 2-propylheptayl EO8 (Lutensol XL89 - BASF); 2-propylheptayl EO5 (Lutensol XL50 - BASF); C 10 EO5 (Lutensol ON 50 - BASF); C 10 - Alcohol EO7 (Lutensol ON 70 - BASF); C8-C 10 EO5 (Novel 810 FD5, Sasol); C 10 EO4 (Novel 10-4 Sasol); Tergitol 15-S-3; Tergitol 15-S-5; Tergitol 15-S-7; and ethylhexanol PO5EO6 (Ecosurf EH6 - Dow).

[0060] The presence of alcohol-alkoxylated nonionic surfactants further enhances the cleaning properties of the liquid composition while helping to prevent leaks without adversely affecting the interaction between the liquid composition and the water-soluble film.

[0061] The first liquid composition may also contain free fragrance. Without being bound by theory, the presence of free fragrance combined with encapsulated fragrance oils can provide a better balance of freshness delivery during different stages of fabric washing and during fabric use.

[0062] Preferably, the first liquid composition has a pH of 4 to 8, more preferably 6 to 8, as measured in a 10% by weight solution of deionized water at 20°C.

[0063] The first liquid composition may also contain a structuring agent to improve the suspension of the flavor capsule.

[0064] Suitable structuring agents include polyacrylate-based polymers, preferably hydrophobically modified polyacrylate polymers; hydroxyethyl cellulose, preferably hydrophobically modified hydroxyethyl cellulose; xanthan gum; hydrogenated castor oil (HCO); and mixtures thereof.

[0065] Preferred hydrophobically modified polyacrylate polymers include water-soluble copolymers based on the main monomers acrylic acid, acrylates, vinyl acetate, methacrylic acid, acrylonitrile, and mixtures thereof; more preferably, the copolymers are based on methacrylic acid and acrylates having an emulsion-like, low-viscosity dispersion appearance. The most preferred hydrophobically modified polyacrylate polymer is Rheovis. ® The AT 120 is commercially available from BASF.

[0066] Other suitable structural agents are hydroxyethyl cellulose (HM-HEC), preferably hydrophobically modified hydroxyethyl cellulose. Suitable hydroxyethyl cellulose (HM-HEC) can be found under the trade name Polysurf 76. ® Purchased from Aqualon / Hercules and W301 from 3V Sigma.

[0067] Xanthan gum is a suitable structural agent used in this paper. Xanthan gum is a polysaccharide commonly used as a rheology modifier and stabilizer. It is produced by the bacteria *Xanthomonas campestris* through the fermentation of glucose or sucrose. Suitable xanthan gum can be marketed under the trade name Kelzan T. ® Purchased from CP Kelco.

[0068] Suitable hydrogenated castor oil can be obtained by deriving the trade name THIXCIN R from Elementis.

[0069] Other suitable structural agents include alkali-soluble emulsions (ASE) or hydrophobically modified alkali-soluble emulsions (HASE). ASE and HASE polymers applicable to this document are described in WO 2024 / 055047A1.

[0070] The first liquid composition may also contain aesthetic dyes and / or pigments, tinting dyes, opacifiers and / or mixtures thereof.

[0071] Preferably, the first liquid composition contains no or substantially no anionic surfactants and charged polymers. It is not desirable to be bound by theory, as such components are believed to impair the leak-proof effect of the alkoxylated alcohol nonionic surfactants according to the invention.

[0072] non-aqueous solvents

[0073] The first liquid composition may contain 5% to 90%, preferably 30% to 90%, more preferably 40% to 90% by weight of the first liquid composition, the non-aqueous solvent comprising a solvent selected from the group consisting of alkoxylated polyols, alkoxylated polyol esters, polyglycerol, and mixtures thereof.

[0074] Alkoxylated polyols and alkoxylated polyol esters

[0075] Alkoxylated polyols have a polyol core with three to five -OH groups, wherein at least one of the -OH groups is modified to form polyoxyalkylene side chains.

[0076] Alkoxylated polyols are based on polyols having a total of three to five -OH groups. The polyol core used to prepare the alkoxylated polyol can be a monomer or an oligomer or polymer constructed through an assembly process, comprising subunits containing -OH groups. Furthermore, when the polyol core is based on an oligomer or polymer, the total number of -OH groups is also three to five. This means that the average number of -OH groups in the compounds of the present invention is not limited to three, four, and five, but can also be any decimal between three and five.

[0077] For example, diglycerides have four -OH groups, and triglycerides have five -OH groups. Those skilled in the art understand that a mixture of diglycerides and triglycerides (n=2 to 3) of polyglycerols can be prepared, wherein the total number of -OH groups in the polyol (the group) is between three and five. Depending on the ratio of diglycerides to triglycerides, any decimal between four and five can be adjusted.

[0078] Therefore, the alkoxylated polyols of the present invention can be based on homopolymers or heteropolymers of polyol molecules having three to five -OH groups. Preferably, the alkoxylated polyols are based on polyols having three -OH groups.

[0079] As used herein, the term "-OH group" refers to a hydroxyl group, particularly an alcohol group. This term includes all alcohol groups regardless of their carbon atom state. Therefore, in the sense of this invention, primary, secondary, and tertiary alcohols fall under the meaning of "-OH group". Preferably, alkoxylated polyols have a straight-chain backbone with carbon atoms. -OH groups that are part of a carboxylic acid are not included in the scope of the term "-OH group".

[0080] Polyols that react with epoxides do not contain any functional groups other than the -OH group (such as amines, esters, carbonyl groups, carbonic acid groups, phosphate groups, sulfonic acid groups, etc. and their derivatives).

[0081] At least one OH group in the (polyol core) -OH group is modified to form an alkylene oxide branch, wherein the alkoxylated polyol comprises an alkylene oxide branch containing an average of at least three alkylene oxide units, preferably an alkylene oxide branch containing an average of 3 to 10 alkylene oxide units. More detailed embodiments describing different chain lengths are provided below.

[0082] It should be noted that all these figures are "average" figures, meaning that these figures refer to the average number of such units for each -OH group calculated based on all -OH groups of the alkoxylated polyol.

[0083] The reactions that produce alkoxylated polyols are statistical reactions, which means that there is never a single chemically precisely defined compound, but alkoxylated polyols are always a mixture of slightly different structures, all of which originate from the same reaction within a single reaction space.

[0084] Therefore, unless otherwise stated, the values, ranges, and ratios of the number of -OH groups and molecular weight (Mn) given in the specification refer to the number averages in a heterogeneous mixture of synthesized alkoxylated polyols containing individual, slightly divergent chemical structures produced by the preparation method of the present invention. As is known in polymer science, the weight-average molecular weight (Mw) is a measure of the (in)homogeneity within a mixture of different substances in an "alkoxylated polyol".

[0085] Polyols may contain impurities or other types of polyols in amounts not exceeding 10% w / w, not exceeding 7% w / w, not exceeding 5% w / w, not exceeding 3% w / w, not exceeding 2% w / w, not exceeding 1% w / w, not exceeding 0.5% w / w, or not exceeding 0.1% w / w.

[0086] The polyol core is preferably a monomer, oligomer, or polymer, wherein each of the oligomer and polymer comprises multiple subunits. Preferably, the oligomer is a homooligomer or the polymer is a heteropolymer. Preferably, the polyol core is a monomer.

[0087] Preferably, the polyol core is selected from the group consisting of glycerol, mesoerythritol, D-threitol, L-threitol, 1,2,5,6-hexanetetrol, pentaerythritol, xylitol, ribitol, arabinitol, pentitol, diglycerides, triglycerides, and polyglycerol, wherein the polyglycerol is preferably composed of two to three glycerol subunits. More preferably, the polyol core is glycerol.

[0088] The alkoxylated polyol comprises an epoxy alkane branch chain containing an average of at least 3 polyethylene oxide units (EO), preferably at least 5 EO, and more preferably at least 10 EO. In even more preferred embodiments, the epoxy alkane branch chain contains an average of 3 to 30 EO, more preferably 5 to 25, and especially 10 to 20 EO.

[0089] In a preferred embodiment, one of the epoxide branches has an average weight in the range of 80 g / mol to 450 g / mol, preferably 100 g / mol to 300 g / mol.

[0090] Alkoxylated polyols may comprise alkyl oxide branches comprising an average of no more than 10 polypropylene oxide (PO) units, preferably no more than 5 PO units, and more preferably no more than 2 PO units. In even more preferred embodiments, the alkyl oxide branches are substantially composed of ethylene oxide units.

[0091] As used herein, the term "average number of EOs per epoxide branch" refers to the calculated number of EO units that should be present in one epoxide branch. As explained in more detail above, those skilled in the art will fully appreciate that the synthesis of the compounds of the present invention will produce a mixture of compounds with slightly different statistical distributions. Therefore, "average number of EOs per epoxide branch" is calculated by dividing the total number of EO moles used per mole of polyol by the (average) number of -OH groups in the polyol (or mixture of polyols).

[0092] As used herein, the term "average number of ether bonds in a polyol core" refers to the calculated number of ether bonds present in a single polyol molecule. Since polyols may be mixtures of compounds deviating from each other, "average" may refer to the arithmetic mean derived from the polyols in the mixture. For example, diglycerides have one ether bond, and triglycerides have two. A polyglycerol having 50% diglycerides and 50% triglycerides has an average of 1.5 ether bonds.

[0093] As used herein, the term "average number of -OH groups in the polyol nucleus" refers to the calculated number of -OH groups that should be present in a polyol molecule. Since polyols may be mixtures of compounds deviating from each other, "average" may refer to the arithmetic mean derived from the polyols in the mixture.

[0094] Preferably, the weight-average molecular weight (Mw) of the alkoxylated polyol is in the range of 400 g / mol to 1500 g / mol, more preferably 450 g / mol to 1300 g / mol, and even more preferably 500 g / mol to 1000 g / mol.

[0095] Preferably, the alkoxylated polyol is an ethoxylated glycerol having an average of 10 to 20 EO units per polyepoxide branch. Commercial examples include Glicerodac 7,5 (Sasol), Glicerodac 15 (Sasol), Glicerodac 20 (Sasol), Glicerodac 40 (Sasol), and UCON. ™ Lubricant TPEG 500 (Dow Chemical), UCON ™ Lubricant TPEG 900 (Dow Chemical Company).

[0096] Those skilled in the art know how to determine / measure the corresponding weight-average molecular weight (MW). This can be done, for example, by size exclusion chromatography (such as GPC, e.g., in combination with light scattering). Preferably, the MW value is determined by OECD DTG 118 (1996), see OECD (1996), Test No. 118: Determination of the Number-Average Molecular Weight and the Molecular Weight Distribution of Polymers using Gel Permeation Chromatography, OECD Guidelines for the Testing of Chemicals, Section 1, OECD Publishing, Paris, also available on the Internet, for example at https: / / doi.org / 10.1787 / 9789264069848-en.

[0097] The molecular weight of the polyol starting material can be determined as described above. The molecular weight of the alkoxylated polyol can be determined by gel permeation chromatography (GPC). Samples were prepared as follows: approximately 15 mg of sample was dissolved in 10 mL of eluent (THF + 0.035 mol / L diethanolamine) at 50 °C for 1 hour. All sample solutions were filtered through a Chromafil Xtra PTFE filter (0.20 µm before injection). The sealed sample vials were placed in an autosampler. An Agilent 1200 HPLC system consisting of an isocratic pump, vacuum degasser, autosampler, and column oven was used. Furthermore, the Agilent system included differential refractive index (DRI) and variable ultraviolet (UVW) detectors for detection. Data acquisition and processing of routine SEC data were performed by WinGPC Unichrom, build 6999, of PSS (Polymer Standard Services, now part of Agilent). A combination of a PSS SDV guard column (7.5 × 50 mm) and three SDV columns (1000A, 100000A, and 1000000A, all 7.5 × 300 mm) was placed in series at 60 °C. THF + 0.035 mol / L diethanolamine was used as the eluent at a flow rate of 1 mL / min. 100 µL of each sample solution was injected. Calibration was obtained using polyethylene oxide standards (Agilent) with a narrow molar mass distribution ranging from M = 160 g / mol to M = 1.378.000 g / mol. Molar masses outside this range were extrapolated.

[0098] “Mw” is the weight-average molecular weight, and “Mn” is the number-average molecular weight. The corresponding values ​​of Mw and / or Mn can be determined as described in the experimental section below.

[0099] The molar mass distribution Mw / Mn obtained by GPC is equal to the polydispersity index (PDI), which has no units [g / mol / g / mol].

[0100] Those skilled in the art will understand that polyols can also be alkoxylated using other alkoxides besides polyethylene oxide. In this context, propylene oxide and butane oxide are mentioned. Furthermore, those skilled in the art are well aware of the beneficial modifications to alkoxy chains, such as modifications with lactones or hydroxycarbonates, as described in WO2021165468 A.

[0101] It should be noted that the alkylene oxides used to prepare alkoxylated alkylene oxides can be derived from fossil or non-fossil carbon sources, or even mixtures thereof. Preferably, the amount of non-fossil carbon atoms in the alkoxy side chain is at least 10%, at least 20%, at least 40%, at least 70%, at least 95%, or it contains only non-fossil derived carbon atoms. Those skilled in the art are well aware of commercial alkylene oxide products made from non-fossil carbon sources (these products are typically sold as sustainable, renewable, or bio-based). For example, Croda International, Snaith, UK, sells ethylene oxide and related products based on bioethanol under the ECO series. Additionally, methods for preparing bio-based propylene oxide are also known (see Abraham, DS, “Production of propylene oxide from propylene glycol” Master's Thesis University of Missouri-Columbia (2007) (p. 75).

[0102] It should be noted that, in the preferred embodiment, the polyol core contains at least two "terminal" primary alcohol groups.

[0103] The non-aqueous solvent may also contain alkoxylated polyol esters, preferably alkoxylated glycerol esters, and more preferably ethoxylated glycerol esters. These alkoxylated polyol esters can be formulated on or in combination with the alkoxylated polyols or polyglycerols described herein. These include esters obtained by reacting the aforementioned alkoxylated polyols with carboxylic acids / fatty acids.

[0104] Polyglycerol :

[0105] The first liquid composition may comprise polyglycerol. The polyglycerol comprises 2 to 12 glycerol units, preferably 2 to 5 glycerol units, more preferably diglycerol, triglycerol, or mixtures thereof, most preferably diglycerol. Such polyglycerol may be formulated in place of or in combination with alkoxylated polyols, including alkoxylated polyglycerols or alkoxylated polyol esters as described herein.

[0106] Polyglycerol has been known since the early 20th century. Polyglycerol is a polyol composed of two or more glycerol molecules linked by ether bonds. Typically, polyglycerol contains several oligomers with a broad distribution. For example, polyglycerol-2 may contain 30% to 40% diglycerol and up to 40% glycerol, with the remainder consisting of higher oligomers. However, high-purity polyglycerol can also be obtained by reacting glycerol (synthetic or of natural origin) with epichlorohydrin, followed by hydrolysis, neutralization, and purification. Following this process, the acyclic isomer is definitively defined as having a high content of α,α'-diglycerol.

[0107] Examples of polyglycerol compounds according to the invention are selected from the group consisting of diglycerol, polyglycerol-3, polyglycerol-4, polyglycerol-5, polyglycerol-6, polyglycerol-7, polyglycerol-8, polyglycerol-9, polyglycerol-10, polyglycerol-11, polyglycerol-12, and mixtures thereof.

[0108] Polyglycerols can be hyperbranched or dendritic polyglycerols, such as polyglycerol 10, i.e., polyglycerols with a large number of branches (preferably at least 7 polyether branches) in the molecule. Their synthesis is described, in particular, by Haag et al. in JACS 2000, 122, 2954-2955 and Stumbé et al. in Poly. Mat. Sci. Eng. 2001, 84, 1023-1024. Their molecular weights are preferably in the range of 1000 g / mol to 30000 g / mol. The molecular weight distribution is preferably narrow, i.e., the apparent polydispersity Mw / Mn is typically less than 1.5 (determined by size exclusion chromatography relative to polypropylene oxide standards). Suitable hyperbranched polyglycerols are available from Hyperpolymers GmbH, D79104 Germany.

[0109] As described in the alkoxylated polyols section, optionally, the polyglycerols of the compositions of the present invention are alkoxylated. Preferred alkoxylated polyglycerols are compounds obtained by reacting ethylene oxide in a manner known to those skilled in the art. Preferred polyglycerols have an average degree of ethoxylation of 2 to 12 per hydroxyl group, preferably 0.5 to 10, more preferably 1 to 5.

[0110] According to the present invention, the first liquid composition may contain a mixture of alkoxylated (preferably ethoxylated) and non-alkoxylated (non-ethoxylated) polyglycerol, wherein the weight ratio of non-ethoxylated polyglycerol to ethoxylated polyglycerol is in the range of 10:1 to 1:10, preferably 5:1 to 1:5, and more preferably 3:1 to 1:1.

[0111] According to the present invention, the first liquid composition may contain a mixture of an alkoxylated (preferably ethoxylated) polyol and a non-alkoxylated (non-ethoxylated) polyglycerol, wherein the weight ratio of the non-ethoxylated polyglycerol to the ethoxylated polyol is in the range of 10:1 to 1:10, preferably 5:1 to 1:5, and more preferably 3:1 to 1:3.

[0112] Polypropylene glycol

[0113] Polypropylene glycol, also commonly referred to as polypropylene oxide, is a polymer of propylene glycol. Polypropylene glycol has a number average molecular weight of 700 Da to 5000 Da, preferably 700 Da to 3000 Da, and more preferably 700 Da to 2500 Da. The molecular weight can be determined by any suitable method, such as as described in Polymer Letters, Vol. 4, pp. 837-841 (1966) or J. Polym. Sci: Part A, Vol. 1, pp. 1041-1048 (1963). Polypropylene glycol comprises, and preferably consists of, poly-1,2-propanediol.

[0114] Polypropylene glycol can be produced by ring-opening polymerization of propylene oxide. Suitable initiators include alcohols with a base (such as potassium hydroxide) as a catalyst. When the initiator is ethylene glycol or water, the polymer is linear. Using multifunctional initiators such as glycerol, pentaerythritol, or sorbitol, the resulting polymer is branched. Linear polypropylene glycol, especially linear poly-1,2-propanediol, is most preferred. Poly-1,2-propanediol of desired molecular weight is commercially available from Dow Chemical Company under the trade name Polyglycol P. Alternatively, poly-1,2-propanediol of desired molecular weight can be ordered from Sigma-Aldrich.

[0115] Ethylene oxide-propylene oxide triblock copolymer

[0116] Ethylene oxide-propylene oxide triblock copolymers have one of the following structures:

[0117] a) An ethylene oxide-propylene oxide-ethylene oxide (EO / PO / EO) triblock copolymer, wherein the copolymer comprises a first EO block, a second EO block and a PO block, and wherein the first EO block and the second EO block are connected to the PO block (I);

[0118] b) A propylene oxide-ethylene oxide-propylene oxide (PO / EO / PO) triblock copolymer, wherein the copolymer comprises a first PO block, a second PO block and an EO block, and wherein the first PO block and the second PO block are connected to the EO block (II).

[0119] In other words, for an ethylene oxide-propylene oxide-ethylene oxide (EO / PO / EO) triblock copolymer, the PO block is located between the two EO blocks. The copolymer can consist of a first EO block, a second EO block, and a PO block, wherein the first and second EO blocks are connected to the PO block. The term "connected to the PO block" in this paper means that the EO-PO-EO block has the following structure (I);

[0120]

[0121] Wherein X1 is preferably between 1 and 60, preferably between 1 and 50, more preferably between 2 and 40, even more preferably between 3 and 30, and most preferably between 5 and 25;

[0122] X2 is preferably between 1 and 60, more preferably between 1 and 50, more preferably between 2 and 40, even more preferably between 3 and 30, and most preferably between 5 and 25;

[0123] Y is preferably between 5 and 80, more preferably between 6 and 70, more preferably between 7 and 60, even more preferably between 8 and 55, and most preferably between 10 and 50.

[0124] Most preferably, the ethylene oxide-propylene oxide triblock copolymer according to Formula I has an X1 value of 5 to 25, a y value of 10 to 50, and an X2 value of 5 to 25.

[0125] In the case of a propylene oxide-ethylene oxide-propylene oxide (PO / EO / PO) triblock copolymer, the EO block is located between the two PO blocks. The copolymer can consist of a first PO block, a second PO block, and an EO block, wherein the first PO block and the second PO block are connected to the EO block.

[0126] The term "connected to PO block" in this paper refers to a PO-EO-PO block having the following structure: HO-(PO)y2(EO)x3(PO)y3-H(II);

[0127] Wherein y2 is preferably between 2 and 60, preferably between 3 and 50, more preferably between 4 and 40, even more preferably between 5 and 30, and most preferably between 10 and 25;

[0128] The y3 is preferably between 2 and 60, preferably between 3 and 50, more preferably between 4 and 40, even more preferably between 5 and 30, and most preferably between 10 and 25.

[0129] x3 is preferably between 3 and 70, more preferably between 5 and 60, more preferably between 7 and 50, even more preferably between 8 and 40, and most preferably between 10 and 30.

[0130] Most preferably, the ethylene oxide-propylene oxide triblock copolymer according to Formula II has a y2 value of 10 to 25, an x3 value of 10 to 30, and a y3 value of 10 to 25.

[0131] The ethylene oxide-propylene oxide triblock copolymers of Formula I and Formula II have a cloud point below 50°C, preferably below 40°C.

[0132] The preferred triblock copolymers of Formula I and Formula II have a weight-average molecular weight between 1,000 Daltons and 10,000 Daltons, preferably between 1,200 Daltons and 8,000 Daltons, more preferably between 1,500 Daltons and 7,000 Daltons, even more preferably between 1,750 Daltons and 5,000 Daltons, and most preferably between 2,000 Daltons and 4,000 Daltons. Preferred triblock copolymers of Formula I include EO1-PO15-EO1, EO6-PO21-EO6, EO13-PO30-EO13, EO8-PO47-EO8, and EO21-PO47-EO21. Preferred triblock copolymers of Formula II include PO21-EO14-PO21 and PO14-EO24-PO14.

[0133] Preferably, the ethylene oxide-propylene oxide triblock copolymer of Formula I comprises ethylene oxide blocks in an average combination between 10% and 90% by weight of the copolymer, preferably between 20% and 70%, and most preferably between 30% and 50%. Most preferably, the total ethylene oxide content is distributed across the two ethylene oxide blocks such that each ethylene oxide block accounts for an average of between 40% and 60% of the total number of ethylene oxide units, preferably between 45% and 55%, even more preferably between 48% and 52%, and most preferably 50%, wherein the percentage of the two ethylene oxide blocks accounts for 100% of the ethylene oxide units present.

[0134] Preferably, the ethylene oxide-propylene oxide triblock copolymer of Formula II comprises propylene oxide blocks in an average combination between 10% and 90% by weight of the copolymer, preferably between 30% and 85%, and most preferably between 50% and 80%. Most preferably, the total propylene oxide content is distributed across the two propylene oxide blocks such that each propylene oxide block accounts for an average of between 40% and 60% of the total number of propylene oxide units, preferably between 45% and 55%, even more preferably between 48% and 52%, and most preferably 50%, wherein the percentage of the two propylene oxide blocks accounts for 100% of the propylene oxide units present.

[0135] Suitable ethylene oxide-propylene oxide triblock copolymers can be purchased from BASF in the Pluronic PE and Pluronic RPE series, or from Dow Chemical in the Tergitol L series. Particularly suitable materials are Pluronic PE 3100, Pluronic PE 4300, Pluronic PE 6400, Pluronic PE 9200, Pluronic PE 9400, Tergitol L81, Tergitol L62, Tergitol L61, Pluronic RPE 1740, Pluronic RPE 3110, and Pluronic RPE 2520.

[0136] Spice capsules

[0137] The first liquid composition of the present invention comprises 1% to 50% by weight, preferably 1% to 30% by weight, of a fragrance capsule. The fragrance capsule has a core surrounded by a shell. As used herein, "shell" and "wall" are used interchangeably with respect to fragrance capsules unless otherwise stated. The core comprises a fragrance and an optional dispensing modifier (e.g., isopropyl myristate). The shell may comprise melamine, polyacrylamide, silicone, silica, polystyrene, polyurea, polyurethane, polyacrylate-based materials, polyacrylate-based materials, gelatin, styrene malic anhydride, polyamide, aromatic alcohols, polyvinyl alcohol, or mixtures thereof. Melamine wall materials may comprise melamine crosslinked with formaldehyde, melamine-dimethoxyethanol crosslinked with formaldehyde, and mixtures thereof; capsules having such wall materials may be used in combination with formaldehyde scavengers such as acetylacetamide, urea, or derivatives thereof.

[0138] Preferably, the capsule has a core-to-wall weight ratio of at least 80:20, more preferably 90:10, and even more preferably 95:5.

[0139] Polyacrylate-based wall materials may include polyacrylates formed from methyl methacrylate / dimethylamino methacrylate, polyacrylates formed from aminoacrylates and / or methacrylates with strong acids, polyacrylates formed from carboxylic acid acrylates and / or methacrylate monomers with strong bases, polyacrylates formed from aminoacrylates and / or methacrylate monomers with carboxylic acid acrylates and / or carboxylic acid methacrylate monomers, and mixtures thereof.

[0140] Wall materials based on polyacrylic acid esters may include polyacrylic acid esters formed from alkyl and / or glycidyl esters of acrylic acid and / or methacrylic acid, acrylates and / or methacrylates carrying hydroxyl and / or carboxyl groups, and allyl glucosamides and mixtures thereof.

[0141] The wall materials based on aromatic alcohols include aryloxyalkanols, arylalkanols, and oligomeric aryl alcohol ethers. They may also comprise aromatic compounds having at least one free hydroxyl group, particularly preferably at least two directly aromatically coupled free hydroxyl groups, especially if the at least two free hydroxyl groups are directly coupled to the aromatic ring, and more particularly preferably positioned meta-positioned relative to each other. Preferably, the aromatic alcohol is selected from phenol, cresols (o-cresol, m-cresol, and p-cresol), naphthols (α-naphthol and β-naphthol), and thymol, as well as ethylphenol, propylphenol, fluorophenol, and methoxyphenol.

[0142] The polyurea wall material may comprise a polyisocyanate. The capsule shell may comprise a polymeric material that is a reaction product of a polyisocyanate and chitosan. The shell may comprise a polyurea resin, wherein the polyurea resin comprises a reaction product of a polyisocyanate and chitosan. The delivery particles of this disclosure may be considered polyurea delivery particles and include a polyurea-chitosan shell. (As used herein, “shell” and “wall” are used interchangeably with respect to delivery particles unless otherwise stated.) The shell may be derived from isocyanates and chitosan.

[0143] Polyurea-chitosan shell capsules can be prepared according to a method comprising the following steps: forming an aqueous phase containing chitosan in an aqueous acidic medium; forming an oil phase, including dissolving a fragrance and at least one polyisocyanate together; forming an emulsion by mixing the aqueous and oil phases into an excess of the aqueous phase under high-shear stirring, thereby forming droplets of the oil phase and fragrance dispersed in the aqueous phase; curing the emulsion by heating for a time sufficient to form a shell at the interface between the droplets and the aqueous phase, the shell containing the reaction products of the polyisocyanate and chitosan, and the shell surrounding the core of the droplets containing the oil phase and fragrance. A diluent, such as isopropyl myristate, can be used to adjust the hydrophilicity of the oil phase. The oil phase is then added to the aqueous phase and milled at high speed to obtain the target size. The emulsion is then cured in one or more heating steps.

[0144] Choose a temperature and time sufficient to form and solidify a shell at the interface between the oil phase droplets and the water continuous phase. For example, heat the emulsion to 85°C over 60 minutes, then maintain it at 85°C for 360 minutes to solidify the particles. The slurry is then cooled to room temperature.

[0145] Chitosan can comprise approximately 21% to approximately 95% of the shell by weight. The ratio of isocyanate monomers, oligomers, or prepolymers to deacetylated chitosan can be as high as 1:10 by weight.

[0146] Polyisocyanates can be aliphatic or aromatic monomers, oligomers, or prepolymers, and usefully contain two or more isocyanate functional groups. Polyisocyanates are preferably selected from the group consisting of: toluene diisocyanate, trimethylolpropane adduct of toluene diisocyanate and trimethylolpropane adduct of phenyl diisocyanate, methylene diphenyl isocyanate, toluene diisocyanate, tetramethylxylamine diisocyanate, naphthalene-1,5-diisocyanate, and phenyl diisocyanate.

[0147] Polyisocyanates may be selected, for example, from aromatic toluene diisocyanates and their derivatives used in the wall formation of encapsulants, or from aliphatic monomers, oligomers, or prepolymers, such as hexamethylene diisocyanate and its dimers or trimers, or 3,3,5-trimethyl-5-isocyanate-methyl-1-isocyanate-cyclohexanetetramethylene diisocyanate. Polyisocyanates may also be selected from 1,3-diisocyanate-2-methylbenzene, hydrogenated MDI, bis(4-isocyanate-cyclohexyl)methane, dicyclohexylmethane-4,4'-diisocyanate, and their oligomers and prepolymers. This list is illustrative and not intended to limit the polyisocyanates that may be used in this disclosure.

[0148] The polyisocyanates that can be used in this invention include isocyanate monomers, oligomers or prepolymers, or dimers or trimers thereof having at least two isocyanate groups. Optimal crosslinking can be achieved using polyisocyanates having at least three functional groups.

[0149] For the purposes of this disclosure, polyisocyanates should be understood to encompass any polyisocyanate having at least two isocyanate groups and containing an aliphatic or aromatic moiety in the monomer, oligomer, or prepolymer. If aromatic, the aromatic moiety may include a phenyl, toluyl, xylyl, naphthyl, or diphenyl moiety, more preferably a toluyl or xylylyl moiety. Aromatic polyisocyanates for the purposes of this document may include diisocyanate derivatives such as biuret and polyisocyanurates. Polyisocyanates, when aromatic, may be, but are not limited to, polyisocyanurates of methylene diphenyl isocyanate, toluene diisocyanate, tetramethylxylamine diisocyanate, and toluene diisocyanate (available from Bayer under the trade name Desmodur). ® (obtained from RC commercial purchase), trimethylolpropane adduct of toluene diisocyanate (available from Bayer under the trade name Desmodur) ® L75 is commercially available) or a trimethylolpropane adduct of dimethyl phthalate (available from Mitsui Chemicals under the trade name Takenate) ® D-110N (commercially available), naphthalene-1,5-diisocyanate, and phenyl diisocyanate.

[0150] Aromatic polyisocyanates are preferred; however, aliphatic polyisocyanates and blends thereof may be useful. Aliphatic polyisocyanates are understood to be polyisocyanates that do not contain any aromatic moiety. Aliphatic polyisocyanates include trimers of hexamethylene diisocyanate, trimers of isoflavone diisocyanate, trimethylolpropane adducts of hexamethylene diisocyanate (available from Mitsui Chemicals), or biuret of hexamethylene diisocyanate (available from Bayer under the trade name Desmodur). ® (N 100 purchased commercially).

[0151] The flavor capsules according to this disclosure are characterized by a volume-weighted median particle size of about 1 micrometer to about 100 micrometers, preferably about 10 micrometers to about 100 micrometers, preferably about 15 micrometers to about 50 micrometers, more preferably about 20 micrometers to about 40 micrometers, and even more preferably about 20 micrometers to about 30 micrometers. Different particle sizes can be obtained by controlling the droplet size during emulsification.

[0152] The capsules may be coated with a deposition aid, a cationic polymer, a nonionic polymer, anionic polymer, or a mixture thereof. Suitable polymers may be selected from: polyethylene formaldehyde, partially hydroxylated polyethylene formaldehyde, polyethyleneamine, polyethyleneimine, ethoxylated polyethyleneimine, polyvinyl alcohol, polyacrylates, polysaccharides (e.g., chitosan), and combinations thereof.

[0153] Preferably, the first liquid composition contains less than 5%, more preferably less than 3%, more preferably less than 1% of a cationic surfactant by weight of the liquid composition, and most preferably contains no cationic surfactant.

[0154] Unit dose products

[0155] This invention relates to a unit-dose article. The unit-dose article comprises a water-soluble membrane surrounding an internal volume encapsulated by the water-soluble membrane. The internal volume contains the liquid composition of this invention.

[0156] A multi-compartment (also referred to herein as a multi-compartment) unit-dose article comprising two or more compartments. Preferably, the unit-dose article has at least two compartments, a first compartment containing the composition of the present invention (first composition), and a second compartment containing a composition comprising a surfactant and a cleaning aid (second composition).

[0157] The water-soluble membrane is sealed to prevent leakage of the composition from the compartment during storage. However, when a unit dose of the water-soluble product is added to water, the water-soluble membrane dissolves and releases the contents of the inner compartment into the water.

[0158] Each compartment should be understood as a closed internal space within a unit dose article that holds the composition. The unit dose article is manufactured such that the water-soluble membrane completely surrounds the composition, thus defining the compartments in which the composition is contained. The membrane is described in more detail below.

[0159] Unit-dose articles may include one or more compartments, two or even at least three compartments, or even at least four compartments, wherein preferably at least two compartments are present in a stacked position, i.e., one compartment is positioned on top of another compartment. Unit-dose articles may also include compartments positioned in a side-by-side orientation, i.e., one compartment is oriented adjacent to another, or even in a "tire and rim" arrangement orientation, i.e., the first compartment is positioned adjacent to the second compartment, but the first compartment at least partially surrounds the second compartment but does not completely enclose the second compartment, or alternatively, one compartment may be completely enclosed within another compartment.

[0160] One of the compartments may be smaller than the other. In the case where a unit dose article comprises at least three compartments, two of the compartments may be smaller than the third compartment, and preferably the smaller compartments are stacked on top of the larger compartments. In the case where a unit dose article comprises at least four compartments, three of the compartments may be smaller than the fourth compartment, and preferably the smaller compartments are stacked on top of the larger compartments. The stacked compartments are preferably arranged side-by-side.

[0161] The water-soluble membrane includes an inner surface that is in contact with the composition and an outer surface that is oriented away from the composition and toward the external environment.

[0162] Preferably, the water-soluble unit-dose article comprises a larger compartment having at least one, preferably at least two, or even at least three smaller compartments stacked thereon. Preferably, the first composition is contained in the smaller compartment (first compartment), and the second composition is contained in the larger compartment (second compartment).

[0163] The outer contour sealing region includes or is preferably constituted by a flange region. The flange region is arranged around the periphery of the unit dose article, and the flange includes a sealing membrane formed by two, three, or more water-soluble films. In other words, the flange region protrudes from the unit dose article and includes the sealing membrane. The term "sealing region" herein refers to both an internal sealing region and an external sealing region, the internal sealing region defined as a membrane region sealed together to define a single compartment without a flange, and the external sealing region defining the flange of the water-soluble unit dose article. Here, the flange does not include the internal sealing region. Preferably, the flange includes a sealing membrane formed by at least a first water-soluble film, a second water-soluble film, and a third water-soluble film (if present). The internal sealing region can be formed by sealing two water-soluble films together to create physically separate individual compartments, or by sealing at least three films together to create physically separate individual compartments. Preferably, the internal seal is formed by sealing only two water-soluble films together.

[0164] Water-soluble membrane

[0165] The membrane of the unit dose product of the present invention is soluble or dispersible in water. The water-soluble membrane preferably has a thickness of 20 micrometers to 150 micrometers, more preferably 35 micrometers to 125 micrometers, even more preferably 50 micrometers to 110 micrometers, and most preferably about 76 micrometers before deformation.

[0166] Preferably, as measured by the method presented herein, after using a glass filter with a maximum pore size of 20 micrometers, the membrane has a water solubility of at least 50%, preferably at least 75%, or even at least 95%.

[0167] Add 5 g ± 0.1 g of membrane material to a pre-weighed 3 L beaker and add 2 L * 5 ml of distilled water. Vigorously stir the mixture for 30 minutes at 30 °C using a Labline magnetic stirrer (model 1250) or equivalent and a 5 cm magnetic stirrer (set to 600 rpm). Then, filter the mixture through a pleated qualitative porous glass filter with the aforementioned defined pore size (maximum 20 microns). Dry the collected filtrate by any conventional method and determine the weight of the remaining material (the dissolved or dispersed portion).

[0168] Then, the percentage of solubility or dispersion can be calculated.

[0169] The preferred membrane material is preferably a polymer material. As is known in the art, membrane materials can be obtained, for example, by casting, blow molding, extrusion, or blow extrusion of polymer materials.

[0170] The water-soluble membrane comprises a polyvinyl alcohol polymer, wherein the polyvinyl alcohol polymer comprises a polyvinyl alcohol homopolymer, anionic polyvinyl alcohol copolymer, or a blend thereof, preferably wherein the anionic polyvinyl alcohol copolymer is selected from sulfonated and carboxylated anionic polyvinyl alcohol copolymers, particularly carboxylated anionic polyvinyl alcohol copolymers. Most preferably, the water-soluble membrane comprises a blend of polyvinyl alcohol homopolymers, a blend of polyvinyl alcohol homopolymers and carboxylated anionic polyvinyl alcohol copolymers, or alternatively, the polyvinyl alcohol is composed of anionic polyvinyl alcohol copolymers, most preferably carboxylated anionic polyvinyl alcohol copolymers. When the polyvinyl alcohol in the water-soluble membrane is a blend of polyvinyl alcohol homopolymers and carboxylated anionic polyvinyl alcohol copolymers, the homopolymer and the anionic copolymer are present in a relative weight ratio of 90 / 10 to 10 / 90, preferably 80 / 20 to 20 / 80, more preferably 70 / 30 to 50 / 50. Anionic monomer units of a general type that can be used in anionic polyvinyl alcohol copolymers include vinyl monomers corresponding to monocarboxylic acid vinyl monomers, their esters and anhydrides, dicarboxylic acid monomers having polymerizable double bonds, their esters and anhydrides, vinyl sulfonic acid monomers, and vinyl polymerizing units of alkali metal salts of any of the foregoing substances.

[0171] Examples of suitable anionic monomer units include vinyl polymerization units corresponding to vinyl anionic monomers, said vinyl anionic monomers including vinylacetic acid, maleic acid, monoalkyl maleate, dialkyl maleate, monomethyl maleate, dimethyl maleate, maleic anhydride, fumaric acid, monoalkyl fumarate, dialkyl fumarate, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconic acid, dimethyl itaconic acid, itaconic anhydride, vinyl sulfonic acid, and olefins. Propylene sulfonic acid, vinyl sulfonic acid, 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methacrylamido-2-methylpropanesulfonic acid, 2-sulfoethyl acrylate, alkali metal salts of the foregoing (e.g., sodium, potassium, or other alkali metal salts), esters of the foregoing (e.g., methyl ester, ethyl ester, or other C1-C4 or C6 alkyl esters), and combinations thereof (e.g., multiple types of anionic monomers or equivalent forms of the same anionic monomer). The anionic monomer can be one or more acrylamidomethylpropanesulfonic acids (e.g., 2-acrylamido-1-methylpropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methacrylamido-2-methylpropanesulfonic acid), their alkali metal salts (e.g., sodium salts), and combinations thereof. Preferably, the anionic portion of the first anionic monomer unit is selected from sulfonates, carboxylates, or mixtures thereof, more preferably carboxylates, and most preferably acrylates, methacrylates, maleates, or mixtures thereof. Preferably, the anionic monomer units are present in the anionic polyvinyl alcohol copolymer in an average amount between 1 mol% and 5 mol%, or between 2 mol% and 5 mol%.

[0172] The polyvinyl alcohol polymer may be between 50% and 95% by weight of the water-soluble film, preferably between 55% and 90%, and more preferably between 60% and 80%.

[0173] To avoid being bound by theory, the term "homopolymer" generally includes polymers having a single type of repeating monomer unit (e.g., polymer chains containing or composed of a single repeating monomer unit). In the specific case of polyvinyl alcohol (PVA), the term "homopolymer" also includes copolymers having a distribution of vinyl alcohol monomer units and optionally vinyl acetate monomer units (depending on the degree of hydrolysis) (e.g., polymer chains containing or composed of vinyl alcohol and vinyl acetate monomer units). In the case of 100% hydrolysis, PVA homopolymers may contain only vinyl alcohol units. To avoid being bound by theory, the term "copolymer" generally includes polymers having two or more types of repeating monomer units (e.g., polymer chains containing or composed of two or more different repeating monomer units, whether they are random copolymers, block copolymers, etc.). In the specific case of polyvinyl alcohol, the term "copolymer" (or "polyvinyl alcohol copolymer") also includes copolymers having a distribution of ethylene alcohol monomer units and vinyl acetate monomer units (depending on the degree of hydrolysis), and at least one other type of repeating monomer unit (e.g., a ternary (or longer) polymer chain comprising or consisting of ethylene alcohol monomer units, vinyl acetate monomer units, and one or more other monomer units (e.g., anionic monomer units). In the case of 100% hydrolysis, polyvinyl alcohol copolymers may include copolymers having ethylene alcohol units and one or more other monomer units, but no vinyl acetate units.

[0174] To avoid being bound by theory, the term "anionic copolymer" includes copolymers having anionic monomer units containing anionic moieties.

[0175] Preferably, polyvinyl alcohol, and / or in the case of polyvinyl alcohol blends, the individual polyvinyl alcohol polymer and / or the blended polyvinyl alcohol polymers, have an average viscosity (μL) between 4 mPa·s and 30 mPa·s, preferably between 10 mPa·s and 25 mPa·s, which is measured at 20°C as a deionized aqueous solution of 4% polyvinyl alcohol polymer. The viscosity of the polyvinyl alcohol polymer is determined by measuring freshly prepared solutions using a Brookfield LV viscometer with a UL adapter, as described in British Standard EN ISO 15023-2:2006 Annex E Brookfield Test Method. Describing the viscosity of a 4% polyvinyl alcohol aqueous solution at 20°C is international practice. It is well known in the art that the viscosity of aqueous solutions of water-soluble polymers (polyvinyl alcohol or other polymers) is associated with the weight-average molecular weight of the same polymer, and viscosity is generally used as a representative of the weight-average molecular weight. Therefore, the weight-average molecular weight of polyvinyl alcohol can be in the range of 30,000 to 175,000, or 30,000 to 100,000, or 55,000 to 80,000. Preferably, polyvinyl alcohol, and / or in the case of polyvinyl alcohol blends, the individual polyvinyl alcohol polymer has an average degree of hydrolysis in the range of 75% to 99%, preferably between 80% and 95%, and most preferably between 85% and 95%. A suitable test method for measuring the degree of hydrolysis is according to the standard method JIS K6726.

[0176] Preferably, the water-soluble film contains a non-aqueous plasticizer. Preferably, the non-aqueous plasticizer is selected from polyols, sugar alcohols, and mixtures thereof. Suitable polyols include those selected from the group consisting of: glycerol, diglycerol, ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol with a molecular weight of up to 400, neopentyl glycol, 1,2-propanediol, 1,3-propanediol, dipropylene glycol, polypropylene glycol, 2-methyl-1,3-propanediol, trimethylolpropane, and polyether polyols, or mixtures thereof. Suitable sugar alcohols include those selected from the group consisting of: isomaltitol, maltitol, sorbitol, xylitol, erythritol, ribitol, galactitol, pentaerythritol, and mannitol, or mixtures thereof. More preferably, the non-aqueous plasticizer is selected from glycerol, 1,2-propanediol, dipropylene glycol, 2-methyl-1,3-propanediol, trimethylolpropane, triethylene glycol, polyethylene glycol, sorbitol, or mixtures thereof, most preferably from glycerol, sorbitol, trimethylolpropane, dipropylene glycol, and mixtures thereof. A particularly suitable plasticizer system comprises a blend of glycerol, sorbitol, and trimethylolpropane. Another particularly suitable plasticizer system comprises a blend of glycerol, dipropylene glycol, and sorbitol. Preferably, the film contains between 5% and 50% by weight of the film, preferably between 10% and 40%, more preferably between 20% and 30% of a non-aqueous plasticizer.

[0177] Preferably, the water-soluble film contains a surfactant. Preferably, the water-soluble film contains a surfactant in an amount between 0.1% and 2.5% by weight of the water-soluble film, more preferably between 1% and 2%. Suitable surfactants may include nonionic, cationic, anionic, and amphoteric categories. Suitable surfactants include, but are not limited to, polyoxyethyleneized polypropylene glycol, alcohol ethoxylates, alkylphenol ethoxylates, tertiary acetylenols and alkanolamides (nonionic), polyoxyethyleneized amines, quaternary ammonium salts and polyoxyethyleneized quaternary ammoniums (cationic), and amine oxides, N-alkyl betaine and sulfobetaine (amphoteric). Other suitable surfactants include sodium sulfosuccinate, acylated fatty acid esters of glycerol and propylene glycol, lactams of fatty acids, sodium alkyl sulfate, polysorbate 20, polysorbate 60, polysorbate 65, polysorbate 80, lecithin, acetylated fatty acid esters of glycerol and propylene glycol, acetylated fatty acid esters, and combinations thereof.

[0178] Preferably, the water-soluble membrane according to the invention comprises a lubricant / stripping agent. Suitable lubricants / stripping agents may include, but are not limited to, fatty acids and their salts, fatty alcohols, fatty acid esters, fatty amines, fatty amine acetates, and fatty amides. Preferred lubricants / stripping agents are fatty acids, fatty acid salts, and fatty amine acetates. The amount of lubricant / stripping agent in the water-soluble membrane is in the range of 0.02% to 1.5%, preferably 0.1% to 1%, based on the weight of the water-soluble membrane.

[0179] Preferably, the water-soluble film comprises fillers, expanders, anti-blocking agents, anti-sticking agents, or mixtures thereof. Suitable fillers, expanders, anti-blocking agents, anti-sticking agents, or mixtures thereof include, but are not limited to, starch, modified starch, cross-linked polyvinylpyrrolidone, cross-linked cellulose, microcrystalline cellulose, silica, metal oxides, calcium carbonate, talc, and mica. Preferred materials are starch, modified starch, and silica. Preferably, the amount of fillers, expanders, anti-blocking agents, anti-sticking agents, or mixtures thereof in the water-soluble film is in the range of 0.1% to 25% by weight of the water-soluble film, preferably 1% to 10%, more preferably 2% to 8%, and most preferably 3% to 5%. In the absence of starch, a preferred range for suitable fillers, expanders, anti-blocking agents, anti-sticking agents, or mixtures thereof is 0.1% to 1% by weight of the water-soluble film, preferably 4%, more preferably 6%, even more preferably 1% to 4%, and most preferably 1% to 2.5%.

[0180] Preferably, the residual moisture content of the water-soluble membrane according to the invention is at least 4% by weight of the water-soluble membrane, more preferably in the range of 4% to 15%, and even more preferably 5% to 10%, as determined by Karl Fischer titration.

[0181] Preferred membranes exhibit good solubility in cold water (meaning unheated distilled water). Preferably, such membranes exhibit good solubility at a temperature of 24°C, or even more preferably at 10°C. Good solubility means, as described above, that the membrane exhibits at least 50%, preferably at least 75%, or even at least 95% water solubility, as measured by the methods described herein after using a glass filter with a maximum pore size of 20 micrometers.

[0182] The film can be opaque, transparent, or translucent. Preferably, the film is transparent. The film may include a printing area.

[0183] The printing area can be achieved using standard techniques such as flexographic printing or inkjet printing.

[0184] The membrane may contain an aversive agent, such as a bittering agent. Suitable bittering agents include, but are not limited to, naringin, sucrose octaacetate, quinine hydrochloride, denaphalonamine, or mixtures thereof. Any suitable amount of the aversive agent may be used in the membrane. Suitable amounts include, but are not limited to, 1 ppm to 5000 ppm, or even 100 ppm to 2500 ppm, or even 250 ppm to 2000 rpm.

[0185] The water-soluble film or water-soluble unit dose product, or both, may also be coated with a lubricant, preferably wherein the lubricant is selected from talc, zinc oxide, silicon dioxide, siloxane, zeolite, silicic acid, alumina, sodium sulfate, potassium sulfate, calcium carbonate, magnesium carbonate, sodium citrate, sodium tripolyphosphate, potassium citrate, potassium tripolyphosphate, calcium stearate, zinc stearate, magnesium stearate, starch, modified starch, clay, kaolin, gypsum, cyclodextrin, or mixtures thereof.

[0186] Preferably, the water-soluble membranes and their respective individual components are independently contained in dioxane between 0 ppm and 20 ppm, more preferably between 0 ppm and 15 ppm, more preferably between 0 ppm and 10 ppm, even more preferably between 0 ppm and 5 ppm, even more preferably between 0 ppm and 1 ppm, even more preferably between 0 ppb and 100 ppb, and most preferably 0 ppb. Those skilled in the art will understand known methods and techniques for determining the dioxane content in water-soluble membranes and their components.

[0187] Second Composition

[0188] The second composition is preferably a liquid composition. This composition is preferably a part of a detergent composition. More preferably, it is a part of an automatic dishwashing or laundry detergent composition. Even more preferably, it is a part of a liquid laundry detergent composition.

[0189] The term "liquid laundry detergent composition" refers to any laundry detergent composition comprising a liquid capable of wetting and treating fabrics, and includes, but is not limited to, liquids, gels, pastes, dispersions, etc. Liquid compositions may include solids or gases in appropriately subdivided forms, but liquid compositions do not include forms that are generally non-fluid, such as tablets or granules.

[0190] The laundry detergent composition can be used in hand washing operations or in automated machine washing operations.

[0191] Preferably, the second composition comprises a non-soap surfactant. The non-soap surfactant is preferably selected from non-soap anionic surfactants, nonionic surfactants, or mixtures thereof. Preferably, the laundry detergent composition comprises between 10% and 60%, more preferably between 20% and 55% by weight of the laundry detergent composition. Example weight ratios of non-soap anionic surfactant to nonionic surfactant are 1:1 to 20:1, 1.25:1 to 17.5:1, 1.5:1 to 15:1, or 1.75:1 to 13:1.

[0192] Preferably, the anionic non-soap surfactant comprises a linear alkylbenzene sulfonate, an alkyl sulfate, an alkoxylated alkyl sulfate, or a mixture thereof. Preferably, the alkoxylated alkyl sulfate is an ethoxylated alkyl sulfate.

[0193] Preferably, the second composition comprises between 5% and 60% by weight of the composition, more preferably between 15% and 55%, more preferably between 25% and 50%, and most preferably between 30% and 45% of a non-soap anionic surfactant.

[0194] Preferably, the non-soap anionic surfactant comprises a linear alkylbenzene sulfonate and an alkoxylated alkyl sulfate, wherein the ratio of the linear alkylbenzene sulfonate to the alkoxylated alkyl sulfate, preferably by weight, is 1:2 to 9:1, more preferably 1:1 to 7:1, more preferably 1:1 to 5:1, and even more preferably 1:1 to 4:1. Alternatively, the non-soap anionic surfactant may consist of a linear alkylbenzene sulfonate. Alternatively, the non-soap anionic surfactant may comprise an unalkoxylated alkyl sulfate and a linear alkylbenzene sulfonate. The alkoxylated or unalkoxylated alkyl sulfate may be derived from synthetic alcohols or natural alcohols, or from blends thereof, depending on the desired average alkyl carbon chain length and average degree of branching. Preferably, the synthetic alcohol is prepared according to the Ziegler process, OXO process, modified OXO process, Fischer-Tropsch process, Gelbert process, or a combination thereof.

[0195] Preferably, the naturally derived alcohol is derived from natural oil, preferably coconut oil, palm kernel oil, or a mixture thereof.

[0196] Preferably, the laundry detergent composition comprises between 1% and 30% by weight of the laundry detergent composition, preferably between 2% and 25%, and most preferably between 3% and 20%. The nonionic surfactant is preferably selected from alcohol alkoxylates, Ziegler-synthesized alcohol alkoxylates, carbonyl-synthesized alcohol alkoxylates, Guerbert alcohol alkoxylates, alkylphenol alcohol alkoxylates, or mixtures thereof.

[0197] Preferably, the second composition comprises between 1.5% and 20% by weight of the composition, more preferably between 2% and 15%, even more preferably between 3% and 10%, and most preferably between 4% and 8%, a soap, preferably a fatty acid salt, more preferably an amine-neutralized fatty acid salt, wherein the amine is preferably an alkanolamine, more preferably selected from monoethanolamine, diethanolamine, triethanolamine or mixtures thereof, and more preferably monoethanolamine.

[0198] Preferably, the second composition comprises a non-aqueous solvent, preferably selected from 1,2-propanediol, dipropylene glycol, tripropylene glycol, glycerol, sorbitol, polyethylene glycol, polypropylene glycol, or mixtures thereof, preferably wherein the polypropylene glycol has a molecular weight of 400. Preferably, the second composition comprises between 10% and 40% by weight of the composition, more preferably between 15% and 30%. Unbound by theory, the non-aqueous solvent ensures an appropriate level of film plasticization, thus preventing the film from becoming too brittle and too "soft." Unbound by theory, having the right degree of plasticization will also promote film dissolution when exposed to water during the washing process.

[0199] Preferably, the second composition contains water at a concentration between 0.5% and 15% by weight of the composition, and more preferably between 5% and 13%.

[0200] Preferably, the second composition comprises an ingredient selected from the list including: cationic polymers, polyester terephthalates, amphiphilic graft copolymers, carboxymethyl cellulose, enzymes, fragrances, encapsulated fragrances, bleaching agents, or mixtures thereof.

[0201] Laundry detergent compositions may include auxiliary ingredients selected from ethanol, tinting dyes, aesthetic dyes, enzymes, detergent builders (preferably citric acid), chelating agents, cleaning polymers, dispersants, dye transfer inhibitor polymers, optical brighteners, opacifiers, defoamers, preservatives, antioxidants, or mixtures thereof. Preferably, the chelating agent is selected from aminocarboxylate chelating agents, aminophosphonate chelating agents, or mixtures thereof.

[0202] Preferably, the second composition has a pH between 6 and 10, more preferably between 6.5 and 8.9, and most preferably between 7 and 8, wherein the pH of the laundry detergent composition is measured as a 10% by weight solution in deionized water at 20°C.

[0203] The second composition can be Newtonian or non-Newtonian. Preferably, the second composition is non-Newtonian. Unbound by theory, non-Newtonian liquids have different properties than Newtonian liquids; more specifically, the viscosity of a non-Newtonian liquid depends on the shear rate, while a Newtonian liquid has a constant viscosity independent of the applied shear rate. The decrease in viscosity when shear is applied to a non-Newtonian liquid is considered to further favor dissolution. The second composition described herein can have any suitable viscosity, depending on factors such as the formulation ingredients and the purpose of the composition. According to the method described herein, when Newtonian, the composition can have viscosity values ​​of 100 cP to 3,000 cP, or 200 cP to 2,000 cP, or 300 cP to 1,000 cP at a shear rate of 20 s⁻¹ and a temperature of 20 °C. According to the method described herein, when non-Newtonian, the composition can have a high shear viscosity value of 100 cP to 3,000 cP, or 300 cP to 2,000 cP, or 500 cP to 1,000 cP at a shear rate of 20 s⁻¹ and a temperature of 20 °C, and a low shear viscosity value of 500 cP to 100,000 cP, or 1,000 cP to 10,000 cP, or 1,300 cP to 5,000 cP at a shear rate of 1 s⁻¹ and a temperature of 20 °C. Methods for measuring viscosity are known in the art. According to this disclosure, viscosity measurements are performed using a rotational rheometer (e.g., TA Instruments AR550).

[0204] The instrument comprises a 40mm 2° or 1° tapered clamp with a gap of approximately 50µm-60µm for isotropic liquids, or a 40mm flat steel plate with a gap of 1000µm for containing liquid particles. Measurements are performed using a procedure that includes a conditioning step, peak holding, and a continuous gradient step. The conditioning step involves setting the measurement temperature at 20°C, performing a 10-second pre-shear at a shear rate of 10 s¹, and equilibrating for 60 seconds at the selected temperature. Peak holding involves applying a shear rate of 0.05 s¹ for 3 minutes at 20°C, sampling every 10 seconds. The continuous gradient step is performed for 3 minutes at 20°C with shear rates ranging from 0.1 s¹ to 1200 s¹ to obtain full flow characteristics.

[0205] The dimensions and values ​​disclosed herein should not be construed as strictly limited to the precise numerical values ​​cited. Rather, unless otherwise specified, each such dimension is intended to represent the stated value and the range surrounding its functional equivalent. For example, a dimension disclosed as “40 mm” is intended to represent “approximately 40 mm”.

[0206] method

[0207] Washing test

[0208] Place a cotton terry cloth (30×30cm) on a ceramic Buchner funnel with a porous glass filter (150mm diameter). Pour 100g of room temperature wash water onto the cotton terry cloth, completely covering the portion of the cloth in contact with the porous glass filter. Then rinse with 3×100g of distilled water at room temperature.

[0209] Place the wet, washed cotton terry fabric in a room at 20°C-25°C for 24 hours.

[0210] Top Space Analysis

[0211] Washed cotton fabrics were analyzed using rapid headspace GC / MS. A 4×4 cm slice was cut from the washed terry fabric and transferred to a 20 ml headspace vial. The fabric sample was equilibrated at 65°C for 10 min. The headspace above the fabric was sampled for 5 min via SPME (50 / 30 µm DVB / Carboxen / PDMS). The SPME fibers were then immediately thermally desorbed into the GC. Analytes were analyzed by rapid GC / MS in full scan mode. The total headspace concentration above the test group was calculated using ion extraction of a specific mass of fragrance raw material (PRM).

[0212] Example

[0213] Obtain room temperature wash water by following these steps:

[0214] 1. Composition 1 was prepared by diluting 34.6 g of detergent composition A (see Table 1) with 965.4 g of distilled water;

[0215] 2. Composition 2 was produced by diluting 1.7g of any one of the compositions of Examples 1* to 3* and 4 to 8 (see Table 2) with 998.3g of distilled water; and

[0216] 3. Mix 50g of composition 1 and 50g of composition 2 and dilute with 900g of distilled water to produce wash water 1* to 3* and 4 to 8.

[0217] The wash water was used in the washing test as described above. The top space analysis is reported in Table 3, and the washing test was repeated four times based on the same sample.

[0218] Table 1: Detergent Compositions

[0219]

[0220] Compositional details for Examples 1*-3* and 4-8 are shown in Table 2. Prior to testing, these compositions were aged at 35°C for one week to simulate consumer-relevant aging conditions.

[0221] Table 2

[0222]

[0223] Table 3: Top Space Analysis

[0224]

[0225] As can be seen from Table 3, dry fabrics washed with the compositions according to the present invention exhibit a higher fragrance concentration than those washed with compositions outside the scope of the present invention.

Claims

1. A unit-dose article comprising a water-soluble membrane that generates a first compartment and a second compartment, wherein the first compartment comprises a first liquid composition, and wherein the first liquid composition comprises: i) More than 16% to 90% by weight of the first composition of an alcohol alkoxylated nonionic surfactant; ii) 1% to 50% of the flavor capsules based on the weight of the first liquid composition; iii) 1% to 25% water by weight of the first liquid composition; and iv) Less than 5% anionic surfactant by weight of the first liquid composition.

2. The unit dose product according to claim 1, wherein the alcohol alkoxylated nonionic surfactant comprises an alcohol alkoxylated nonionic surfactant selected from the group consisting of straight-chain alcohol alkoxylated nonionic surfactants, branched-chain alkoxylated primary alcohol nonionic surfactants, alkoxylated secondary alcohol nonionic surfactants, and mixtures thereof.

3. The unit dose product according to claim 2, wherein the alcohol alkoxylated nonionic surfactant comprises an alkoxylated secondary alcohol nonionic surfactant, the alkoxylated secondary alcohol nonionic surfactant comprises an ethoxylated secondary alcohol nonionic surfactant, the ethoxylated secondary alcohol nonionic surfactant having a total average alkyl chain length of 5 to 20, preferably 11 to 15 carbon atoms, and an average number of 3 to 40, preferably 3 to 9 ethoxy units, more preferably the ethoxylated secondary alcohol having a total average alkyl chain length of 11 to 15 carbon atoms and an average of 3 to 9 ethoxy units.

4. The unit dose product according to claim 2 or 3, wherein the alcohol alkoxylated nonionic surfactant comprises a branched alkoxylated primary alcohol nonionic surfactant, and the branched alkoxylated primary alcohol nonionic surfactant comprises a branched alkoxylated C6-C16 primary alcohol nonionic surfactant derived from an alcohol selected from the group consisting of: methylhexanol, ethylhexanol, propylhexanol, dimethylhexanol, trimethylhexanol, methylheptanol, ethylheptanol, propylheptanol, dimethylheptanol, trimethylheptanol, methyloctanol, ethyloctanol, propyloctanol, butyloctanol, dimethyloctanol, trimethyloctanol, methylnonanol, ethylnonanol, propylnonanol, butylnonanol, dimethyl ... Methylnonanol, trimethylnonanol, methyldecanol, ethyldecanol, propyldecanol, butyldecanol, dimethyldecanol, trimethyldecanol, methylundecanol, ethylundecanol, propylundecanol, butylundecanol, dimethylundecanol, trimethylundecanol, methyldodecanol, ethyldodecanol, propyldodecanol, butyldodecanol, dimethyldodecanol, trimethyldodecanol, and mixtures thereof, wherein the branched alkoxylated C6-C16 primary alcohols have an average of 1 to 30, preferably 2 to 15, more preferably 3 to 12, and even more preferably 4 to 9 ethoxylated units, and optionally 1 to 9, preferably 2 to 7, and more preferably 3 to 6 propoxylated units.

5. The unit dose article according to the preceding claim, wherein the branched alkoxylated primary alcohol nonionic surfactant comprises an alkoxylated Guerbert alcohol nonionic surfactant selected from the group consisting of: alkoxylated C8 Guerbert alcohol nonionic surfactant, alkoxylated C10 Guerbert alcohol nonionic surfactant, alkoxylated C12 Guerbert alcohol, and mixtures thereof, wherein the average number of alkoxylated units is 1 to 14, preferably an ethoxylated C8, C10, and / or C12 Guerbert alcohol nonionic surfactant with an average degree of ethoxylation of 5 to 11, preferably 6 to 9.

6. The unit dose product according to any one of claims 2 to 5, wherein the alcohol alkoxylated nonionic surfactant comprises a straight-chain alcohol alkoxylated nonionic surfactant, the straight-chain alcohol alkoxylated nonionic surfactant comprising C8 to C96. 18 Preferably C8 to C 16 More preferably C 10 To C 14 The most preferred option is C. 12 To C 14 It has a straight-chain alkyl chain and preferably contains 1 to 30, more preferably 3 to 15, more preferably 5 to 12, and even more preferably 6 to 10 ethoxylate units.

7. The unit dose article according to any one of the preceding claims, wherein the composition comprises: i) Glycerin; ii) Glycerol and polyethylene glycol with a number average molecular weight of 200 Da to 1000 Da, in a weight ratio of at least 1.5; iii) A non-aqueous solvent selected from the group consisting of polyglycerol, alkoxylated polyols, alkoxylated polyol esters and mixtures thereof, wherein the polyol has 3 to 5 hydroxyl groups; iv) Polypropylene glycol with a number-average molecular weight of 700 Da to 5000 Da; and / or v) An ethylene oxide-propylene oxide triblock copolymer having one of the following structures: a) An ethylene oxide-propylene oxide-ethylene oxide (EO / PO / EO) triblock copolymer, wherein the copolymer comprises a first EO block, a second EO block and a PO block, and wherein the first EO block and the second EO block are connected to the PO block; b) A propylene oxide-ethylene oxide-propylene oxide (PO / EO / PO) triblock copolymer, wherein the copolymer comprises a first PO block, a second PO block and an EO block, and wherein the first PO block and the second PO block are connected to the EO block.

8. The unit dose article according to any one of the preceding claims, wherein the flavor capsule is a core / shell capsule, wherein the shell comprises a material selected from the group consisting of: melamine, polyacrylamide, silicone, silica, polystyrene, polyurea, polyurethane, polyacrylate-based materials, polyacrylate-based materials, gelatin, styrene malic anhydride, polyamide, aromatic alcohols, polyvinyl alcohol, and mixtures thereof.

9. A unit dose product according to any one of the preceding claims, wherein the flavor capsule comprises a core and a shell, and wherein the core preferably comprises isopropyl myristate, and the shell preferably comprises polyacrylate.

10. A unit dose article according to any one of the preceding claims, wherein the first liquid composition contains less than 3%, preferably less than 1%, of anionic surfactant by weight of the composition, and more preferably the first liquid composition is substantially free of anionic surfactant.

11. A unit dose liquid composition according to any one of the preceding claims, wherein the pH of the first liquid composition is 4 to 8, as measured in a 10% by weight solution of deionized water at 20°C.

12. The unit dose article according to any one of the preceding claims, wherein the second compartment comprises a second composition comprising a surfactant and a cleaning aid.

13. The unit dose article according to any one of the preceding claims, wherein the first liquid composition is substantially free of enzymes.

14. The unit dose article according to any one of the preceding claims, wherein the second composition comprises anionic surfactant and / or nonionic surfactant.

15. The unit dose article according to any one of the preceding claims, wherein the second composition comprises a cleaning aid selected from the group consisting of: enzymes, anti-redeposition agents, neutralizing agents, optical brighteners, foam inhibitors, chelating agents, bittering agents, dye transfer inhibitors, detergents, water softeners, electrolytes, pH adjusters, anti-greying agents, anti-wrinkle components, colorants, fragrances, processing aids, and mixtures thereof.

16. The unit dose article according to the preceding claim, wherein the cleaning aid of the second composition comprises an enzyme, the enzyme preferably selected from the group consisting of: proteases, amylases, cellulases, lipases, xyloglucanases, mannanases, nucleases, pectic acid lyases, and mixtures thereof.

17. The unit dose article according to any one of the preceding claims, wherein the second composition is a liquid composition.

18. A unit dose article according to any one of the preceding claims, wherein the second composition comprises an organic solvent selected from the group consisting of 1,2-propanediol, dipropylene glycol, tripropylene glycol, glycerin, sorbitol, polyethylene glycol, and mixtures thereof.

19. A unit dose article according to any one of the preceding claims, wherein the first composition and / or the second composition comprises free flavoring.

20. The unit dose article according to any one of the preceding claims, wherein the film comprises polyvinyl alcohol.

21. A method for washing a fabric, the method comprising the step of contacting the fabric with an aqueous solution, the aqueous solution comprising a composition of a unit dose of the article according to any one of the preceding claims.

22. Use of alcohol alkoxylated nonionic surfactants in liquid compositions containing fragrance capsules to reduce fragrance leakage from the capsules.

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