Laundry Care Composition

Abstract

The present invention provides a concentrated fabric softening composition comprising: a) Silicone-based polymers, C11-C15 isoparaffinic hydrocarbons, or mixtures thereof. b) a copolymer of acrylamide and a cationic vinyl addition monomer; and c) a crosslinked copolymer of acrylamide and a cationic vinyl addition monomer, which is crosslinked with a difunctional vinyl addition monomer, and a method for making such a composition and the use of the composition to provide a stable diluted flexible composition.

Description

[Technical Field]

[0001] The present invention relates to concentrated fabric softening compositions, particularly concentrated fabric softening compositions comprising silicones and / or isoparaffinic hydrocarbons, which can be diluted with water before use in a weight ratio of water to concentrated composition of up to about 45 to 1. The present invention also relates to methods for making such compositions and the use of such compositions to provide stable diluted fabric softeners. [Background technology]

[0002] Background of the Invention Softening compositions, also known as fabric conditioning compositions, provide benefits to treated textiles, particularly during the final rinse phase of an automatic laundry process, after the wash cycle is completed. Such benefits include softening benefits provided by the incorporation of softener actives. Fabric softening compositions are manufactured at one or more manufacturing locations, then transported and distributed to retailers and ultimately to end users. Because typical fabric softening compositions contain a large proportion of water, it is environmentally and logistically advantageous to create a concentrated premix at the manufacturing site and then transport it to local retailers and end users who can dilute the concentrated premix with tap water and create the final diluted fabric softening composition.

[0003] In commercial liquid fabric softening compositions, the rheological properties of the product have a significant impact on consumer acceptance. A common method to enhance product appeal and communicate product richness and efficacy is to increase the apparent viscosity of the liquid product.

[0004] However, when diluted with water, the viscosity of concentrated fabric softening compositions generally decreases, and the rich appearance is reduced. It has been discovered that concentrated compositions and diluted products resulting from diluting concentrated compositions have problems meeting customer viscosity requirements. In particular, the amount of polymer thickener required to provide sufficient viscosity in the diluted product can result in an unacceptably high viscosity of the undiluted product.

[0005] There are two important requirements for a pre-dilution system: i) The product should incorporate some mechanism for thickening the diluted product. If the initial product is too viscous, it is unlikely to mix well when diluted, e.g., the diluted product may form lumps. If the initial product has a low viscosity to ensure satisfactory dispersion, the resulting diluted product is usually very thin. In many markets, consumers have been conditioned to associate high viscosity with product strength; and ii) After dilution, the resulting product must exhibit good viscosity stability and stability against phase separation, since the product will be stored for a period of time and used in a number of washing / rinsing steps.

[0006] Cationic linear and crosslinked polymers are known in the art as ingredients that provide apparent viscosity in fabric softening compositions. For example, WO2004 / 061065 and WO2004 / 061066 disclose stable concentrated water-based fabric softening compositions that can be diluted with water before use in a weight ratio of 4 to 1 water to concentrated softening composition, and that comprise at least one cationic fabric softener and a mixture of cationic polymers that can modify the rheological properties of such fabric softening compositions.

[0007] WO2007 / 141310 discloses a concentrated aqueous fabric softening composition that can be diluted with water in a weight ratio of 3 to 1 water to fabric softening composition, the composition comprising a cationic fabric softener, a mixture of cationic cross-linked polymers; and an electrolyte such as CaCl2.

[0008] While the prior art has recognized the use of polymeric thickeners to enhance consumer palatability, there remains a need for concentrated liquid fabric softeners that are physically stable, flowable, and dilutable with water up to 45 to 1 for use in the rinse cycle, yet maintain their physical stability and are easily pourable after dilution. Concentrated fabric softening compositions must be stable, fragranced, preservative-treated, and possess appropriate rheological properties to achieve expected performance, particularly with regard to the consumer dilution process and the appropriate appearance and viscosity after dilution. Even more importantly, the diluted product must also be aesthetically pleasing and functionally appropriate.

[0009] Despite the prior art, there remains a need for improved concentrated liquid fabric softeners that can be used by users in a diluted state. Typically, such compositions are purchased by consumers and diluted in the home environment. The greater the dilution factor of the concentrated fabric conditioning composition, the greater the environmental and logistical benefits. Therefore, there is a need to provide a concentrated fabric softening composition that can be diluted with water in a weight ratio of up to about 45 to 1 water to concentrated softening composition before use in the rinse cycle as a laundry fabric softener.

[0010] SUMMARY OF THE INVENTION In one aspect, the present invention provides a concentrated fabric softening composition, wherein the concentrated composition comprises: a) a silicone-based polymer, a C11-C15 isoparaffinic hydrocarbon, or a mixture thereof; b) a copolymer of acrylamide and a cationic vinyl addition monomer; and c) Crosslinked copolymers of acrylamide and cationic vinyl addition monomers that are crosslinked with difunctional vinyl addition monomers Includes.

[0011] In another aspect, the present invention relates to a method of making the concentrated fabric softening composition defined herein. In another aspect, there is provided a method of producing a dilute liquid fabric softener using the concentrated fabric softening composition defined herein.

[0012] definition Concentrated fabric softening composition refers to a composition suitable for dilution into a liquid fabric softener capable of softening fabrics such as clothing in a domestic washing machine. Liquid fabric softener refers to any liquid-containing treatment composition that is capable of softening fabrics, such as clothing, in a domestic washing machine.

[0013] Quaternary ammonium compounds (QACs) are salts of quaternary ammonium cations, also known as quats, with the structure NR4 + where R is an alkyl or aryl group. The ammonium ion (NH4 + Unlike primary, secondary, and tertiary ammonium cations, quaternary ammonium cations remain permanently charged independent of the pH of their solution. As referred to herein, quaternary ammonium compounds are not polymeric. Typical quaternary ammonium compounds used in fabric softening compositions include the so-called ester quats.

[0014] A "physically stable" composition typically means that the composition does not separate into different phases over a period of 3 months to 1 year. Unless otherwise specified, all percentages and ratios are calculated by weight. The term "perfume" or "fragrance" as used herein refers to an aromatic substance capable of imparting a pleasant odor to fabrics and includes conventional materials commonly used in laundry detergent compositions to neutralize malodors and / or impart a pleasant odor.

[0015] Detailed Description Preferred and / or optional features of the invention will now be described. Any aspect of the invention may be combined with any other aspect of the invention unless the context requires otherwise. Preferred or optional features of any aspect may be combined, alone or in combination, with any aspect of the invention, as well as with any other preferred or optional feature, unless the context requires otherwise.

[0016] The Applicant has surprisingly and unexpectedly discovered that a) a silicone-based polymer, a C11-C15 isoparaffinic hydrocarbon, or a mixture thereof; b) a copolymer of acrylamide and a cationic vinyl addition monomer; and c) Crosslinked copolymers of acrylamide and cationic vinyl addition monomers that are crosslinked with difunctional vinyl addition monomers can provide a concentrated fabric softening composition that is dilutable with water in a weight ratio of water to concentrated composition of up to about 45 to 1, whereby the concentrated composition and the resulting diluted fabric softener are physically stable and have a customer-acceptable viscosity.

[0017] The present invention is based on the discovery that the use of a mixture of a cationic copolymer; a crosslinkable copolymer; and a C11-C15 isoparaffinic hydrocarbon, as defined herein, in a concentrated fabric softening composition can adjust the viscosity of both the concentrated composition and the diluted "ready to use" fabric softener to achieve desired flow characteristics of viscosity and pourability.

[0018] Furthermore, the fabric softening composition of the present invention is preferably free of quaternary ammonium compounds as well as any other low molecular weight cationic, anionic and nonionic surfactants, which is advantageous when fragrance-containing microcapsules are added to the fabric softening composition, since it is known that the presence of such surfactants can affect the stability of the microcapsules against leakage.

[0019] Silicone-Based Polymers The concentrated fabric softening composition of the present invention comprises a silicone-based polymer as a fabric softener active ingredient. The silicone-based polymer suitable for use in the present invention is any silicone-containing polymer.The silicone-containing polymer is selected from the group consisting of cyclic silicone, polydimethylsiloxane, aminosilicone, cationic silicone, silicone polyether, silicone resin, silicone urethane, and combinations thereof.The silicone may be polydialkylsilicone, or polydimethylsilicone (polydimethylsiloxane or "PDMS", or dimethicone), or derivatives thereof.The silicone may be selected from amino-functional silicone, aminopolyethersilicone, alkyloxylated silicone, cationic silicone, ethoxylated silicone, propoxylated silicone, ethoxylated / propoxylated silicone, quaternary silicone, or combinations thereof.

[0020] In one embodiment, the silicone-based polymer is polydimethylsiloxane (PDMS). In one embodiment, the silicone-based polymer is decamethyltetrasiloxane. In one embodiment, the silicone-based polymer is available under the trade name XIAMETER. TM PMX-200 Silicone Fluid (Dow) is a dimethicone-based fluid that exhibits high hydrophobicity and excellent spreadability, among other benefits. TMThe silicone-based polymer, sold under the trade name XIAMETER PMX-200 Silicone Fluid 1.5 cSt, is a decamethyltetrasiloxane-based fluid that exhibits a kinematic viscosity of 1.5 cSt. TM PMX-200 Silicone Fluid is a decamethyltetrasiloxane-based fluid sold at 2 cSt, which exhibits a kinematic viscosity of 2 cSt. The latter polymer has the advantage of being safer in the manufacturing process of laundry compositions.

[0021] In one embodiment, the silicone-based polymer is a polymer sold under the trade name XIAMETER TM -MEM-2664 - Emulsion (Dow) is a dimethicone-based fluid sold. In one embodiment, the silicone-based polymer is a polymer sold under the trade name XIAMETER TM It is a cyclopentasiloxane sold as PMX-0245 (Dow).

[0022] In one embodiment, the silicone-based polymer is an aminosilicone, such as amodimethicone. TM 2-8566 Amino Fluid (Dow). In one embodiment, the aminosilicone is sold under the trade name DOWSIL TM It is sold as FM-6620 Emulsion (Dow).

[0023] In one embodiment, the silicone-based polymer is a mixture of cyclopentasiloxane and an aminosilicone (e.g., amodimethicone). In one embodiment, the ratio of cyclopentasiloxane to amodimethicone is between about 2.5:1 and about 3:1, optionally about 2.7:1.

[0024] C11-C15 isoparaffin hydrocarbons Isoparaffinic hydrocarbons are synthetic isoalkane mixtures produced by catalytic hydrotreating of petroleum fractions (naphtha). C11-C15 isoparaffinic hydrocarbons are mixtures of hydrocarbons with carbon numbers ranging from C11 to C15, primarily containing branched alkanes (isoalkanes or isoparaffins).

[0025] In one embodiment, the C11 to C15 isoparaffinic hydrocarbon is available under the trade name ISOPAR (R) It is sold by L FLUID (Exxon Mobil).

[0026] In one embodiment, a mixture of C11-C15 isoparaffinic hydrocarbons and / or silicone-based polymers such as amodimethicone is used, hi one embodiment, the ratio of C11-C15 isoparaffinic hydrocarbons to amodimethicone is between about 0.5:1 and about 2:1, optionally about 1:1.

[0027] In one embodiment, the silicone-based polymer and / or C11-C15 isoparaffinic hydrocarbon is present in the range of about 5% to about 30% by weight of the concentrated fabric softening composition, preferably in the range of about 8% to about 26% by weight, and more preferably in the range of about 12% to about 15% by weight, preferably 13% by weight of the concentrated fabric softening composition.

[0028] cationic polymer The fabric softening compositions of the present invention comprise cationic polymers, particularly cationic copolymers. Such polymers include polyquaterniums as additional softening actives. The term polyquaternium is the International Cosmetic Ingredient Nomenclature (INCI) name for a variety of polycationic polymers, including Polyquaterniums 1-47.

[0029] Those skilled in the art will recognize that many of these cationic agents serve multiple functions: typically, they are useful as conditioners, antistatic agents, fabric softeners, and antimicrobial agents.

[0030] Cationic acrylamide copolymers have been used as viscosity or rheology control agents. Examples of such commercially available copolymers are Polyquaternium 15 and Polyquaternium 32.

[0031] The concentrated fabric softening composition includes a combination of cationic polymers. In a preferred embodiment, the compositions of the present invention comprise a combination of a copolymer of acrylamide and a cationic vinyl addition monomer and a crosslinked copolymer of acrylamide and a cationic vinyl addition monomer that has been crosslinked with a difunctional vinyl addition monomer.

[0032] Copolymers of acrylamide and cationic vinyl addition monomers In the present invention, the first cationically charged polymer is a copolymer of acrylamide and a cationic vinyl addition monomer, such as poly(diallyldimethylammonium chloride-co-acrylamide) copolymer (e.g., Polyquaternium 7).

[0033] In one embodiment, the cationic polymer is a copolymer of acrylamide and diallyldimethylammonium chloride, sold under the trade name Flosoft LS407 by SNF Floerger.

[0034] In one embodiment, the copolymer of acrylamide and diallyldimethylammonium chloride is present in the range of about 1% to about 10%, preferably in the range of about 3% to about 5%, and more preferably in the range of about 3.5% to about 4.5% by weight of the concentrated fabric softening composition.

[0035] Crosslinked copolymers of acrylamide and cationic vinyl addition monomers crosslinked with difunctional vinyl addition monomers In the present invention, the second cationic acrylamide copolymer is a crosslinked copolymer of acrylamide and a cationic vinyl addition monomer that is crosslinked with a difunctional vinyl addition monomer.

[0036] In one embodiment, the second cationic polymer is a crosslinked copolymer resulting from the polymerization of 5 to 100 mole percent cationic vinyl addition monomer, 0 to 95 mole percent acrylamide, and 50 to 1000 ppm of a difunctional vinyl addition monomer crosslinker.

[0037] In one embodiment, the difunctional vinyl addition monomer is methylenebisacrylamide. In one embodiment, a cationic crosslinked copolymer is the result of approximately 20% acrylamide, approximately 80% MADAM methyl chloride (MADAM is dimethylaminoethyl methacrylate), crosslinked with 450-600 ppm methylenebisacrylamide. The resulting polymer is designated poly(trimethylammonioethyl methacrylate chloride-co-acrylamide) copolymer (e.g., Polyquaternium-15) and crosslinked with methylenebisacrylamide. Such a material is commercially available from SNF Floerger under the trade name Flosoft FS 222.

[0038] In one embodiment, the crosslinked copolymer of acrylamide and a cationic vinyl addition monomer crosslinked with a difunctional vinyl addition monomer is present in an amount from about 5% to about 25%, preferably from about 12% to about 20%, and more preferably from about 15% to about 17%, by weight of the concentrated fabric softening composition.

[0039] Without wishing to be bound by theory, it is believed that the combination of silicone-based polymers and / or C11-C15 isoparaffinic hydrocarbons; copolymers of acrylamide and cationic vinyl addition monomers; and crosslinked copolymers of acrylamide and cationic vinyl addition monomers crosslinked with difunctional vinyl addition monomers provides the desired viscosity profile for concentrated fabric softening compositions according to the present invention, as well as for diluted aqueous laundry fabric softeners at dilution ratios up to 45 to 1.

[0040] In one embodiment, the viscosity of the concentrated fabric softening composition according to the present invention is between about 50 cps and about 3000 cps, optionally between about 100 cps and about 2900 cps, and optionally between 200 cps and about 2800 cps.

[0041] In one embodiment, the total amount of softener active ingredients, e.g., the total amount of silicone-based polymer and / or C11-C15 isoparaffinic hydrocarbon, copolymer of acrylamide and cationic vinyl addition monomer, and crosslinked copolymer of acrylamide and cationic vinyl addition monomer crosslinked with a difunctional vinyl addition monomer, is between about 20% and 50% by weight, preferably between about 25% and 40% by weight, and more preferably between about 27% and 34% by weight.

[0042] In one embodiment, the viscosity of the aqueous fabric softener after dilution in a water to concentrate ratio of up to 45 to 1 is between about 100 cps and about 3000 cps, optionally between about 200 cps and about 1200 cps, and optionally between about 300 cps and about 1100 cps.

[0043] All viscosity measurements are taken on a Brookfield RV DV at 50 RPM, spindle SC4-28, at 25°C. Simultaneously and surprisingly, the softening composition maintains its ability to soften fabrics even when diluted at dilution ratios up to 45:1.

[0044] Non-encapsulated fragrance ingredients In one embodiment, the concentrated fabric softening composition comprises at least one non-encapsulated fragrance ingredient. A comprehensive list of fragrance ingredients that may be included in the compositions of the present invention can be found in perfumery literature, such as "Perfume & Flavor Chemicals," by S. Arctander (Allured Publishing, 1994). The at least one non-encapsulated fragrance ingredient may be a fragrance ingredient characterized by a boiling point greater than 250°C.

[0045] The at least one non-encapsulated fragrance ingredient may be present in an amount ranging from about 5% to about 20% by weight of the concentrated fabric softening composition, more specifically from about 8% to about 15% by weight, and optionally about 8.8% or about 13.2% by weight.

[0046] Microcapsule composition In one embodiment, the concentrated fabric softening composition comprises a microcapsule composition comprising a polymer that encapsulates a benefit agent, wherein the benefit agent is encapsulated in a core-shell microcapsule comprising a core and a shell.

[0047] The core-shell microcapsule composition is generally provided in the form of a slurry, i.e., a dispersion or suspension of microcapsules in an aqueous medium that may contain anywhere on the order of 60 wt-% water. If desired, the slurry can be dried to provide the microcapsule composition in the form of a powder or cake, which generally contains around 5 wt-% water.

[0048] In one embodiment, the shell of the core-shell microcapsules comprises a polymer selected from the group consisting of melamine-formaldehyde polymer, urea-formaldehyde polymer, polyurea, polyurethane, polyamide, polyacrylate, polycarbonate, and mixtures thereof, as defined herein.

[0049] thermosetting resin Thermosetting resins are typically obtained by reacting polyfunctional monomers such as amines, isocyanates, alcohols or phenols, chlorocarboxylic acids, (meth)acrylates, epoxides, silanes and aldehydes. Thermosetting resins, such as aminoplast, polyurea, and polyurethane resins, and combinations thereof, are commonly used as shell materials in the preparation of core-shell microcapsules. They are particularly valued for their leak-tightness when dispersed in aqueous suspensions, even in surfactant-containing media.

[0050] In one embodiment, the shell may comprise a melamine-formaldehyde polymer. This type of core-shell capsule has proven particularly suitable for benefit agent encapsulation and is described, for example, in WO 2008 / 098387 A1, WO 2016 / 207180 A1, and WO 2017 / 001672 A1.

[0051] In one embodiment, the shell may comprise a polyurea or polyurethane polymer. This type of core-shell capsule has also been successfully used to encapsulate benefit agents and has the advantage of addressing consumer concerns regarding residual formaldehyde in the composition. Such capsules are also described, for example, in WO 2019 / 174978 A1.

[0052] In one embodiment, the shell may comprise polyacrylate, one or more polymerized monoethylenically unsaturated and / or polyethylenically unsaturated monomer(s). This type of core-shell capsule has also been successful in encapsulating benefit agents. Such capsules have been described in the prior art, for example, in WO 2013 / 111912 A1 or WO 2014 / 032920 A1.

[0053] polymer stabilizer In one embodiment, the shell may include a polymeric stabilizer formed by combining a polymeric surfactant with at least one aminosilane. The polymeric surfactant includes a polysaccharide containing a carboxylic acid group. The aminosilane is defined as follows. The shell may further include a polysaccharide, preferably a polysaccharide containing beta (1→4) linked monosaccharide units, more preferably a cellulose derivative, particularly selected from the group consisting of hydroxyethyl cellulose, hydroxypropyl methylcellulose, cellulose acetate, carboxymethyl cellulose, and combinations thereof, preferably hydroxyethyl cellulose. Such capsules have been described in the prior art, for example, in WO 2020 / 233887A1.

[0054] Hydrated polymer phase and polymer stabilizer In one embodiment, the shell may comprise a hydrated polymer phase and a polymeric stabilizer at the interface between the shell and the core.

[0055] In such an arrangement, the polymeric stabilizer provides an impermeable encapsulant, while the hydrated polymer phase provides the desired deposition and adhesion to the substrate. Furthermore, without being bound by any theory, it is speculated that this also provides an optimal point for microbial degradation.

[0056] The polymeric stabilizer may be selected from a wide range of film-forming materials and resins. Preferably, the polymeric stabilizer is highly cross-linked to significantly reduce diffusion of the encapsulated benefit agent through the shell. Preferably, the impermeability of the shell is sufficiently high to significantly prevent leakage of the benefit agent in an extract base, such as a consumer product containing a surfactant.

[0057] In one embodiment of the present invention, the polymeric stabilizer is a thermosetting resin. Thermosetting resins are typically obtained by reacting polyfunctional monomers such as amines, isocyanates, alcohols or phenols, chlorocarboxylic acids, (meth)acrylates, epoxides, silanes and aldehydes.

[0058] In one aspect of the present invention, a polymeric stabilizer is formed by the reaction of an aminosilane with a polyfunctional isocyanate. Such polymeric stabilizers have the advantage of being highly crosslinked, tending to provide surface anchoring groups that can be used to immobilize additional materials to complete shell formation. These additional materials may include additional encapsulating materials, coatings, and, as described in more detail below, simple and complex coacervates and hydrogels.

[0059] The aminosilane used in forming the polymer stabilizer can be selected from compounds represented by formula (I). Si(R 1 )(R 2 ) f (OR 3 ) (3-f) Formula (I) In the formula, R 1 is a linear or branched alkyl or alkenyl residue containing an amine function; R 2 are each independently a linear or branched alkyl group having 1 to 4 carbon atoms; R 3 are each independently H or a straight or branched alkyl group having 1 to 4 carbon atoms; and f is 0, 1, or 2.

[0060] The silane groups may undergo polycondensation reactions with each other to form a silica network at the oil / water interface, further stabilizing this interface. In one embodiment, R 2 and R 3 are each independently methyl or ethyl. In one embodiment, f is 0 or 1.

[0061] In one embodiment, R 1 is a C1-C containing amine functional group 12 is a linear or branched alkyl or alkenyl residue of the formula: 1 is a C1-C4 linear or branched alkyl or alkenyl residue containing an amine function. In one embodiment, the amine functional group is a primary amine, a secondary amine, or a tertiary amine.

[0062] In one embodiment, at least one aminosilane is a bimodal aminosilane. "Bimodal aminosilane" refers to a molecule that comprises at least one amino group and two residues, each of which has at least one alkoxysilane moiety. Compared with conventional aminosilanes, bimodal aminosilanes are particularly advantageous for forming a stable oil-water interface. Without wishing to be bound by theory, it is believed that this beneficial role is due to the specific bidirectional arrangement of silane moieties in the molecule of bimodal aminosilane, which allows the formation of a more tightly connected silica network at the oil-water interface.

[0063] In one embodiment, the bimodal aminosilane is a compound of formula (II). (OR 3 ) (3-f) (R 2 ) f Si-R 4 -XR 4 -Si(OR 3 ) (3-f) (R 2 ) f Formula (II) In the formula, X is -NR 5 -, -NR 5 -CH2-NR 5 -, -NR 5 -CH2-CH2-NR 5 -, -NR 5 -CO-NR 5 -,or [ka] and R 2 are each independently a straight or branched alkyl having 1 to 4 carbon atoms; R 3 are each independently H or a straight or branched alkyl group having 1 to 4 carbon atoms; R 4are each independently a straight-chain or branched alkylene group having 1 to 6 carbon atoms; R 5 are each independently H, CH3, or C2H5; and Each f is independently 0, 1 or 2.

[0064] In one embodiment, R 2 is CH3 or C2H5. In one embodiment, R 3 is CH3 or C2H5. In one embodiment, R 4 is -CH2-, -CH2-CH2- or -CH2-CH2-CH2-CH2-. In one embodiment, R 5 is H or CH3. In one embodiment, f is 0 or 1.

[0065] Examples of suitable bimodal aminosilanes include, but are not limited to, bis(3-(triethoxysilyl)propyl)amine, N,N'-bis(3-(trimethoxysilyl)propyl)urea, bis(3-(methyldiethoxysilyl)propyl)amine, N,N'-bis(3-(trimethoxysilyl)propyl)ethane-1,2-diamine, bis(3-(methyldimethoxysilyl)propyl)-N-methylamine, N,N'-bis(3-(triethoxysilyl)propyl)piperazine, and combinations thereof. In one embodiment, the bimodal aminosilane is bis(3-(triethoxysilyl)propyl)amine, which has the advantage of releasing ethanol during polycondensation of ethoxysilane groups instead of the more toxic and less preferred methanol.

[0066] The bimodal aminosilane can be a secondary aminosilane. Using a secondary bimodal aminosilane instead of a primary aminosilane reduces the reactivity of the polymeric stabilizer toward electrophilic species, especially aldehydes. Thus, benefit agents containing high levels of aldehydes may be encapsulated with less likelihood of adverse interactions between the core-forming material and the shell-forming material.

[0067] Other aminosilanes can also be used in combination with the aforementioned bimodal aminosilanes, especially those described herein above.

[0068] The polyfunctional isocyanate may be selected from organic isocyanates in which the isocyanate group is bonded to an organic residue (RN=C=O or R-NCO). The polyfunctional isocyanate may be selected from alkyl, alicyclic, aromatic and alkylaromatic, and anionically modified polyfunctional isocyanates and combinations thereof, having two or more (e.g., three, four, five, etc.) isocyanate groups in the molecule.

[0069] Preferably, the polyfunctional isocyanate is an aromatic or alkylaromatic isocyanate, and the alkylaromatic polyfunctional isocyanate preferably has a methylisocyanate group attached to the aromatic ring. Both aromatic and methylisocyanate-substituted aromatic polyfunctional isocyanates have superior reactivity compared to alkyl and alicyclic polyfunctional isocyanates. Among these, 2-ethylpropane-1,2,3-tolyltris((3-(isocyanatomethyl)phenyl)carbamate) is particularly preferred due to its trifunctional nature, which favors the formation of intermolecular crosslinks, and its intermediate reactivity, which favors network uniformity. This alkylaromatic polyfunctional isocyanate is commercially available, sold by Mitsui under the trademark Takenate D-100 N, or by Covestro under the trademark Desmodur. (R) It is sold under the trademark Quix175.

[0070] As an alternative to aromatic or alkylaromatic polyfunctional isocyanates, it may also be advantageous to add anionically modified polyfunctional isocyanates, due to the ability of such polyfunctional isocyanates to react at the oil / water interface and even in the aqueous phase close to the oil / water interface. A particularly suitable anionically modified polyfunctional isocyanate has the formula (III): [ka] Formula (III)

[0071] Formula (III) shows a commercially available anionically modified polyisocyanate, which is sold by Covestro under the trade name Bayhydur (R) It is a modified isocyanurate of hexamethylene diisocyanate sold under the trademark XP2547.

[0072] In a preferred embodiment of the present invention, the polyfunctional isocyanate is 2-ethylpropane-1,2,3-tolyltris((3-(isocyanatomethyl)phenyl)carbamate). Particularly preferably, the polymeric stabilizer is formed by the reaction of bis(3-(triethoxysilyl)propyl)amine with 2-ethylpropane-1,2,3-tolyltris((3-(isocyanatomethyl)phenyl)carbamate). This particular combination of bimodal secondary aminosilane and polyfunctional isocyanate provides advantageous interfacial stability and release characteristics. The stabilized interface is sufficiently impermeable and possesses the desired surface functionality to effectively encapsulate at least one benefit agent contained in the core.

[0073] In a preferred embodiment of the present invention, the hydrated polymer phase can be a coacervate, especially a complex coacervate. "Complex coacervation" refers to the formation of an interfacial layer comprising a mixture of polyelectrolytes.

[0074] The phenomenon of coacervation can be observed under an optical microscope, where it is manifested by the appearance of a ring around the droplet of core composition, consisting of the aforementioned polyelectrolyte-rich phase, which has a different refractive index than the surrounding aqueous phase.

[0075] Polyelectrolyte coacervation is generally induced by bringing the polyelectrolyte close to its isoelectric point, the point at which the net charge of the polyelectrolyte is zero or close to zero. This can be achieved by altering the salt concentration or the pH of the medium. In complex coacervation, complexation occurs at a pH where one of the polyelectrolytes has an overall positive charge (polycation) and the other has an overall negative charge (polyanion), resulting in a neutral overall complex charge.

[0076] In a preferred embodiment of the present invention, a coacervate may be formed from a polycation and a polyanion.

[0077] Preferably, pH is used as the parameter driving coacervation. Thus, the polycation preferably has a charge that is pH-dependent. This is the case for polymers with primary, secondary, and tertiary amino groups, such as polyamines, e.g., chitosan, and most proteins, e.g., gelatin. Proteins have the additional advantage of being prone to temperature-dependent structural changes, which can also be used to control the morphology of the coacervate. In particular, changing the temperature of some proteins induces the formation of secondary, tertiary, and quaternary protein structures, which can be used to control the properties of the coacervate.

[0078] Chitosan has the advantage that it is derived from the natural polymer chitin. In a preferred embodiment of the present invention, the polycation is selected from the group consisting of proteins, chitosan, and combinations thereof.

[0079] More specifically, the polycation can be a protein selected from the group consisting of gelatin, casein, albumin, polylysine, soy protein, pea protein, rice protein, hemp protein, and combinations thereof. In a particularly preferred embodiment of the present invention, the at least one protein is gelatin, even more preferably type B gelatin.

[0080] Type B gelatin is obtained from the alkaline treatment of collagen and is well known for its ability to form complexes with anionic polyelectrolytes such as negatively charged polysaccharides under slightly acidic conditions.

[0081] Gelatin is often characterized by its so-called "bloom strength." This refers to the stiffness of a gelatin film, as measured by a so-called "Bloom Gelometer," according to the official procedure of the Gelatin Manufacturers Institute of America, Inc., 2019 revision, Chapter 2.1. According to this procedure, bloom strength, expressed in grams, is equal to the weight, expressed in grams, required to move a standardized plunger with a diameter of 12.5 mm vertically to a depth of 4 mm into a gelatin gel prepared under controlled conditions, i.e., in a standardized bottle, by dissolving 6.67 wt.-% gelatin in deionized water at 60°C and allowing the gel to form for 17 hours at 10°C. The higher the weight, the higher the bloom strength of the gelatin used to prepare the tested gel.

[0082] In a preferred embodiment of the present invention, Type B gelatin has a bloom strength of 90 to 250 Bloom.

[0083] If the bloom strength is too low, the gel will be mechanically weak and the resulting coacervate may not form a free-standing layer of gelatin-rich phase around the core composition, whereas if the bloom strength is too high, the coacervate and resulting gelatin-rich phase will be too brittle.

[0084] In a preferred embodiment of the present invention, Type B gelatin is obtained from fish, since fish gelatin is more acceptable to consumers than beef or pork gelatin, mainly due to health concerns, social background or religious regulations.

[0085] Alternatively, the protein may be a vegetable protein, in particular pea protein and / or soy protein, which have the advantage of being vegan.

[0086] The polycation may be a denatured protein. Contrary to native proteins, denatured proteins are deprived of the ability to form secondary, tertiary, or quaternary structures and are essentially amorphous. Such amorphous proteins may form more impermeable membranes than native proteins, thus contributing to the encapsulating power of the shell. Denaturation can be achieved by treating the protein with chemical or physical means, such as acid or alkali treatment, heat, or exposure to hydrogen bond-disrupting agents.

[0087] In the case where the polycation is chitosan, the chitosan may have a molecular weight between 3,000 and 1,000,000 g / mol, more particularly between 10,000 and 500,000 g / mol, and even more particularly between 30,000 and 300,000 g / mol.

[0088] The polyanion may be any negatively charged polymer. However, since pH is preferably used to control coacervation, it may be more advantageous for the charge of the polymer to be pH dependent. Such polymers may be selected from polymers with pendant carboxyl groups, such as methacrylic and acrylic acid polymers and copolymers, hydrolyzed maleic anhydride copolymers, and polysaccharides with carboxyl groups.

[0089] In a preferred embodiment of the invention, the polyanion is a polysaccharide containing carboxylate and / or sulfate groups.

[0090] Polysaccharides containing carboxylate groups are particularly suitable for complex coacervation with proteins. This is because the net charge of these polysaccharides can be adjusted by adjusting the pH, facilitating complexation with amphoteric proteins. Complexation occurs at a pH where proteins have an overall positive charge, while polysaccharides have an overall negative charge, resulting in a neutral overall complex charge. These polysaccharides include native polysaccharides, i.e., polysaccharides that are not modified from nature, and modified polysaccharides.

[0091] Polysaccharides containing carboxylic acid groups may contain uronic acid units, especially hexuronic acid units. Such polysaccharides are widely available in nature.

[0092] The hexuronic acid unit is selected from the group consisting of a galacturonic acid unit, a glucuronic acid unit, in particular a 4-O-methyl-glucuronic acid unit, a glucuronic acid unit, a mannuronic acid unit, and combinations thereof.

[0093] The polysaccharides containing carboxylic acid groups may be branched. Branched polysaccharides containing carboxylic acid groups have the advantage of forming a more compact network than linear polysaccharides, which favors the impermeability of the encapsulation shell, resulting in reduced leakage and higher encapsulation efficiency.

[0094] The carboxylate groups can be at least partially present in the form of the corresponding carboxylate salts, especially the corresponding sodium, potassium, magnesium or calcium carboxylate salts.

[0095] In a specific embodiment of the present invention, the polyanion is selected from the group consisting of pectin, gum arabic, alginate, and combinations thereof. In pectin, the carboxylic acid groups can be partially present in the form of the corresponding methyl esters. The percentage of carboxylic acid groups present in the form of the corresponding methyl esters can be 3% to 95%, preferably 4% to 75%, more preferably 5% to 50%. Pectin containing 50% or more of carboxylic acid groups present in the form of the corresponding methyl esters is called "highly methoxylated". Pectin containing less than 50% of carboxylic acid groups present in the form of the corresponding methyl esters is called "lowly methoxylated".

[0096] Of the two variants of gum arabic, namely Gum Acacia Senegal and Gum Acacia Seyal, Gum Acacia Senegal is preferred due to the high levels of glucuronic acid in Gum Acacia Senegal.

[0097] The hydrated polymer phase can be a hydrogel. In the context of the present invention, a "hydrogel" is a three-dimensional (3D) network of hydrophilic polymers that can swell in water while maintaining its structure due to chemical or physical crosslinking of the individual polymer chains.

[0098] Such hydrogels can be formed at interfaces by several methods, particularly by self-assembly of polyelectrolytes around pre-existing interfaces, covalent grafting of pre-formed hydrogel particles in solution, polymerization of water-soluble monomers initiated at the interface, and phase separation of water-soluble polymers on the interface.

[0099] For the avoidance of doubt, in the context of the present invention, coacervates, especially complex coacervates, especially those crosslinked by covalent bonds, are considered to be hydrogels.

[0100] The use of a hydrogel has been found to particularly enhance both the deposition and adhesion of the microcapsules onto substrates, especially fabrics.

[0101] The hydrogels can be interconnected with the polymeric stabilizer, particularly through functional groups present on the surface of the stabilizer.

[0102] This allows the hydrogel layer to be locked onto the polymer stabilizer present at the droplet interface, creating a shell composed of a polymer composite instead of just a blend.

[0103] Both the hydrogel crosslinking and the hydrogel interconnection with the polymeric stabilizer can be performed sequentially or simultaneously.

[0104] In a preferred embodiment of the present invention, the hydrogel is a crosslinked coacervate, particularly a complex coacervate crosslinked with a multifunctional aldehyde, more specifically a bifunctional aldehyde selected from the group consisting of succinaldehyde, glutaraldehyde, glyoxal, benzene-1,2-dialdehyde, benzene-1,3-dialdehyde, benzene-1,4-dialdehyde, piperazine-N,N-dialdehyde, 2,2'-bipyridyl-5,5'-dialdehyde, and combinations thereof. Bifunctional aldehydes are known to be effective crosslinkers for proteins. Bifunctional aldehydes are known to be effective crosslinkers for proteins.

[0105] The hydrogel is temperature sensitive and may have a gelling temperature between 20° C. and 50° C., preferably between 25° C. and 40° C. When such a hydrogel is used, the deposition performance of capsules in the fabric can be improved when the fabric is washed at a temperature higher than the hydrogel gelling temperature.

[0106] The shell can be further stabilized with a stabilizer. Preferably, the stabilizer comprises at least two carboxyl groups. Even more preferably, the stabilizer is selected from the group consisting of citric acid, benzene-1,3,5-tricarboxylic acid, benzene-1,2,4-tricarboxylic acid, 2,5-furandicarboxylic acid, itaconic acid, poly(itaconic acid), and combinations thereof.

[0107] Coacervate In one embodiment, the shell may comprise a complex coacervate formed from at least one protein and at least one polysaccharide. Such core-shell capsules have proven suitable for encapsulating benefit agents and are described, for example, in WO 1996 / 020612 A1, WO 2001 / 03825 A1 or WO 2015 / 150370 A1.

[0108] Cross-linking at least one protein with a first cross-linking agent followed by the addition of at least one polysaccharide to form a complex coacervate is described in WO 2021 / 239742 A1.

[0109] In one embodiment, the shell of the microcapsules is as described in WO 2023 / 020883 A1.

[0110] In one embodiment, the shell of the microcapsules can be made from a biodegradable or non-biodegradable material. In one embodiment, the microcapsules are made from a biodegradable material.

[0111] In a preferred embodiment of the present invention, the plurality of core-shell microcapsules have a volume median diameter Dv(50) of 1 to 100 μm, preferably 5 to 75 μm, more preferably 8 to 60 μm, and even more preferably 10 to 30 μm. Microcapsules having a volume median diameter in the range of 10 to 30 μm exhibit optimal deposition on a variety of substrates, including fabrics and hair.

[0112] The resulting encapsulated composition, presented in the form of a slurry of microcapsules suspended in an aqueous suspension medium, may be directly incorporated into a consumer product base. Optionally, however, the slurry may be dried to present the encapsulated composition in the form of a dry powder. Drying of the microcapsule slurry is conventional and may be carried out according to techniques known in the art, such as spray drying, evaporation, freeze drying, or the use of a desiccant. Typically, as is conventional in the art, the dried microcapsules are dispersed or suspended in a suitable powder, such as powdered silica, which can function as a bulking agent or flow aid. Such a suitable powder may be added to the encapsulated composition before, during, or after the drying step.

[0113] In particular, the drying process may involve an additional encapsulation process, in which additional functional materials are encapsulated in additional encapsulating materials. For example, the dried slurry may contain at least one unencapsulated functional material and at least one water-soluble encapsulating material in addition to the core-shell microcapsules obtained in the process according to the present invention, and the unencapsulated functional material in the core-shell microcapsules is encapsulated in the water-soluble encapsulating material during drying. Typically, the at least one water-soluble encapsulating material comprises at least one hydrocolloid, such as starch octenyl succinate and gum acacia. The hydrocolloid protects and stabilizes the dispersion of the unencapsulated material in the aqueous phase of the slurry, and is formed around or coexists with the core-shell microcapsules during drying.

[0114] The encapsulated functional material in the core-shell microcapsules may include a first fragrance, while the functional material encapsulated in the water-soluble encapsulating material may include a second fragrance, where the first and second fragrances may be the same or different.

[0115] Combining at least two encapsulation processes has the advantage of providing different mechanisms for releasing the functional material, for example a combination of moisture-induced and mechanical stress-induced release.

[0116] The drying step may also be accompanied by or followed by a mechanical or thermal treatment such as spheronization, granulation, extrusion, etc.

[0117] In the microcapsule compositions according to the present invention, the proportion of benefit agent may be from about 10 to about 50 wt.-%, preferably from about 20 to about 47.5 wt.-%, and more preferably from about 30 to about 45 wt.-%, based on the total weight of the microcapsule composition.

[0118] The proportion of the microcapsule composition as described herein above in the concentrated fabric softening composition ranges from about 0% to about 6% by weight, preferably about 4.4% by weight, based on the total weight of the concentrated fabric softening composition.

[0119] Benefit Agent The benefit agent contained in the core may be a fragrance ingredient, a malodor counteractant, or a mixture thereof.

[0120] In a specific embodiment of the present invention, the core comprises at least one fragrance ingredient. A comprehensive list of fragrance ingredients that can be encapsulated according to the present invention can be found in perfumery literature, for example, "Perfume & Flavor Chemicals", S. Arctander (Allured Publishing, 1994). The encapsulated perfume according to the present invention preferably comprises a fragrance ingredient selected from the group consisting of: ACETYL ISOEUGENOL ((E)-2-methoxy-4-(prop-1-en-1-yl)phenyl acetate); ADOXAL (2,6,10-trimethylundec-9-enal); AGRUMEX (2-(tert-butyl)hexyl cycloacetate); ALDEHYDE C 10 DECYLIC (decanal); ALDEHYDE C 11 MOA (2-methyldecanal); ALDEHYDE C 11 UNDECYLENIC (undec-10-enal); ALDEHYDE C 110 UNDECYLIC (undecanal); ALDEHYDE C 12 LAURIC (dodecanal); ALDEHYDE C 12 MNA PURE (2-methylundecanal); ALDEHYDE C 8 OCTYLIC (octanal); ALDEHYDE C 9 ISONONYLIC (3,5,5-TRIMETHYLHEXANAL); ALDEHYDE C 9 NONYLIC FOOD GRADE (NONANAL); ALDEHYDE C 90 NONENYLIC ((E)-NONA-2-ENAL); ALDEHYDE ISO C 11 ((E)-UNDEC-9-ENAL); ALDEHYDE MANDARINE ((E)-DODECE-2-ENAL); ALLYL AMYL GLYCOLATE (PROP-2-ENYL 2-(3-METHYLBUTOXY)ACETATE); ALLYL CAPROATE (PROP-2-ENYL HEXANOATE); ALLYL CYCLOHEXYL PROPIONATE (PROP-2-ENYL 3-CYCLOHEXYLPROPANOATE); ALLYL OENANTHATE (PROP-2-ENYLHEPTANOATE); AMBER CORE(1-((2-(tert-butyl)cyclohexyl)oxy)butan-2-ol);AMBERKETAL (3,8,8,11a-tetramethyldodecahydro-1H-3,5a-epoxynaphtho[2,1-c]oxepin); AMBERMAX (1,3,4,5,6,7-hexahydro-beta,1,1,5,5-pentamethyl-2H-2,4a-methanonaphthalene-8-ethanol); AMBRETTOLIDE ((Z)-oxacycloheptadec-10-en-2-one); AMBROFIX ((3aR,5aS,9aS,9bR)-3a,6,6,9a-tetramethyl-2,4,5,5a,7,8,9,9b-octahydro-1H-benzo[e][1]benzofuran); AMYL BUTYRATE (pentyl butanoate); AMYL CINNAMIC ALDEHYDE ((Z)-2-benzylideneheptanal); AMYL SALICYLATE (Pentyl 2-hydroxybenzoate); ANETHOLE SYNTHETIC ((E)-1-Methoxy-4-(prop-1-en-1-yl)benzene); ANISYL ACETATE (4-Methoxybenzyl acetate); APHERMATE (1-(3,3-dimethylcyclohexyl)ethyl formate); AUBEPINE PARA CRESOL (4-Methoxybenzaldehyde); AURANTIOL ((E)-Methyl 2-((7-hydroxy-3,7-dimethyloctylidene)amino)benzoate);

[0121] BELAMBRE ((1R,2S,4R)-2'-ISOPROPYL-1,7,7-TRIMETHYLSPIRO[BICYCLO[2.2.1]HEPTANE-2,4'-[1,3]DIOXANE]); BENZALDEHYDE (BENZALDEHYDE); BENZYL ACETATE (BENZYL ACETONE); BENZYL BENZOATE (BENZYL BENZOATE); BENZYL SALICYLATE (BENZYL 2-HYDROXYBENZOATE); BERRYFLOR (ETHYL 6-ACETOXYHEXANOATE); BICYCLO NONALACTONE (OCTAHYDRO-2H-CHROMEN-2-ONE); BOISAMBRENE FORTE ((Ethoxymethoxy)-cyclododecane); BOISIRIS ((1S,2R,5R)-2-ethoxy-2,6,6-trimethyl-9-methylenebicyclo[3.3.1]nonane); BORNEOL CRYSTALS ((1S,2S,4S)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-ol); BORNYL ACETATE ((2S,4S)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-yl acetate); BOURGEONAL (3-(4-(tert-butyl)phenyl)propanal); BUTYL BUTYRO LACTATE (1-butoxy-1-oxopropan-2-yl butanoate); BUTYL CYCLOHEXYL ACETATE PARA (4-(tert-butyl)cyclohexyl acetate); BUTYL QUINOLINE SECONDARY (2-(2-methylpropyl)quinoline); CAMPHOR SYNTHETIC ((1S,4S)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-one); CARVACROL (5-isopropyl-2-methylphenol); CARVONE LAEVO ((5R)-2-methyl-5-prop-1-en-2-ylcyclohex-2-en-1-one); CASHMERAN (1,1,2,3,3-pentamethyl-2,3,6,7-tetrahydro-1H-inden-4(5H)-one); CASSYRANE (5-tert-butyl-2-methyl-5-propyl-2H-furan);CEDRENE ((1S,8aR)-1,4,4,6-tetramethyl-2,3,3a,4,5,8-hexahydro-1H-5,8a-methanoazulene); CEDRYL ACETATE ((1S,6R,8aR)-1,4,4,6-tetramethyloctahydro-1H-5,8a-methanoazulen-6-yl acetate); CEDRYL METHYL ETHER ((1R,6S,8aS)-6-methoxy-1,4,4,6-tetramethyloctahydro-1H-5,8a-methanoazulene); CETONE V ((E)-1-(2,6,6-trimethylcyclohex-2-en-1-yl)hepta-1,6-dien-3-one); CINNAMIC ALCOHOL SYNTHETIC ((E)-3-PHENYLPROP-2-EN-1-OL); CINNAMIC ALDEHYDE ((2E)-3-PHENYLPROP-2-ENAL); CINNAMYL ACETATE ((E)-3-PHENYLPROP-2-EN-1-YL ACETATE); CIS JASMONE ((Z)-3-METHYL-2-(PENT-2-EN-1-YL)CYCLOPENT-2-ENONE); CIS-3-HEXENOL ((Z)-HEX-3-EN-1-OL); CITRAL TECH ((E)-3,7-DIMETHYLOCTA-2,6-DIENAL); CITRATHAL R ((Z)-1,1-DIETHOXY-3,7-DIMETHYLOCTA-2,6-DIENE); CITRONELLAL (3,7-DIMETHYLOCTA-6-ENAL); CITRONELLOL EXTRA (3,7-DIMETHYLOCT-6-EN-1-OL); CITRONELLYL ACETATE (3,7-DIMETHYLOCT-6-EN-1-YL ACETATE); CITRONELLYL FORMATE (3,7-DIMETHYLOCT-6-EN-1-YL FORMAT); CITRONELLYL NITRILE (3,7-DIMETHYLOCT-6-ENENITRILE); CLONAL (DODECANE NITRILE); CORANOL (4-CYCLOHEXYL-2-METHYLBUTANE-2-OL); COSMONE ((Z)-3-METHYLCYCLOTETRADECAN-5-ENONE); COUMARIN PURE CRYSTALS (2H-CHROMEN-2-ONE); CRESYL ACETATE PARA ((4-METHYLPHENYL)ACETATE);CRESYL METHYL ETHER PARAMETER (1-METHOXY-4-METHYLBENZENE);CUMIN NITRILE (4-ISOPROPYLBENZONITRILE);CYCLAL C (2,4-DIMETHYLCYCLOHEX-3-ENE-1-CARBALDEHYDE);CYCLAMEN ALDEHYDE EXTRA (3-(4-ISOPROPYLPHENYL)-2-METHYLPROPANAL);CYCLOGALBANATE (ALLYL 2-(CYCLOHEXYLOXY)ACETATE);CYCLOHEXYL ETHYL ACETATE (2-CYCLOHEXYLETHYL ACETATE);CYCLOHEXYL SALICYLATE (CYCLOHEXYL 2-HYDROXYBENZOATE);CYCLOMYRAL (8,8-DIMETHYL-1,2,3,4,5,6,7,8-OCTAHYDRONAPHTHALENE-2-CARBALDEHYDE);CYMENE PARAMETER (1-METHYL-4-PROPAN-2-YLBENZENE);

[0122] DAMASCENONE ((E)-1-(2,6,6-trimethylcyclohexa-1,3-dien-1-yl)but-2-en-1-one); DAMASCONE ALPHA ((E)-1-(2,6,6-trimethylcyclohex-2-en-1-yl)but-2-en-1-one); DAMASCONE DELTA (1-(2,6,6-trimethyl-1-cyclohex-3-enyl)but-2-en-1-one); DECALACTONE GAMMA (5-hexyloxolan-2-one); DECENAL-4-TRANS ((E)-Deca-4-enal); DELPHONE (2-pentylcyclopentanone); DELTA-3 CARENE ((1S,6S)-3,7,7-trimethylbicyclo[4.1.0]hept-3-ene); DIHEXYL FUMARATE (DIHEXYL-BUTA-2-ENEDIOATE);DIHYDRO ANETHOLE (1-METHOXY-4-PROPYLBENZENE);DIHYDRO JASMONE (3-METHYL-2-PENTYLCYCLOPENT-2-ENONE);DIHYDRO MYRCENOL (2,6-DIMETHYLOCTA-7-EN-2-OL);DIMETHYL ANTHRANILATE (METHYL 2-(METHYLAMINO)BENZOATE);DIMETHYL BENZYL CARBINOL;DIMETHYL BENZYL CARBINOL (2-METHYL-1-PHENYLPROPAN-2-OL);DIMETHYL BENZYL CARBINYL ACETATE (2-METHYL-1-PHENYLPROPAN-2-YL ACETATE);DIMETHYL BENZYL CARBINYL BUTYRATE (2-METHYL-1-PHENYLPROPAN-2-YL BUTANOATOATE);DIMETHYL OCTENONE (4,7-dimethyloct-6-en-3-one); DIMETOL (2,6-dimethylheptan-2-ol); DIPENTENE (1-methyl-4-(prop-1-en-2-yl)cyclohex-1-ene); DIPHENYL OXIDE (oxydibenzene); DODECALACTONE DELTA (6-heptyltetrahydro-2H-pyran-2-one); DODECALACTONE GAMMA (5-octyloxolan-2-one); DODECENAL ((E)-dodec-2-enal);DUPICAL ((E)-4-((3aS,7aS)-Hexahydro-1H-4,7-methanoinden-5(6H)-ylidene)butanal; EBANOL ((E)-3-methyl-5-(2,2,3-trimethylcyclopent-3-en-1-yl)pent-4-en-2-ol); ESTERLY (ethyl cyclohexylcarboxylate); ETHYL ACETATE; ETHYL ACETOACETATE (ethyl 3-oxobutanoate); ETHYL CINNAMATE (ethyl 3-phenylprop-2-enoate); ETHYL HEXANOATE; ETHYL LINALOO ((E)-3,7-dimethylnona-1,6-dien-3-ol); ETHYL LINALYL ACETATE ((Z)-3,7-DIMETHYLNONA-1,6-DIEN-3-YL ACETATE);ETHYL MALTOL (2-ETHYL-3-HYDROXY-4H-PYRAN-4-ONE);ETHYL METHYL-2-BUTYRATE (ETHYL 2-METHYLBUTYRATE);ETHYL OCTANOATE (ETHYL OCTANOATE);ETHYL OENANTHATE (ETHYL HEPTANOATE);ETHYL PHENYL GLYCIDATE (ETHYL 3-PHENYLOXIRAN-2-CARBOXYLATE);ETHYL SAFRANATE (ETHYL 2,6,6-TRIMETHYLCYCLOHEXA-1,3-DIEN-1-CARBOXYLATE);ETHYL VANILLIN (3-Ethoxy-4-hydroxybenzaldehyde);ETHYLENE BRASSYLATE (1,4-dioxacycloheptadecane-5,17-dione); EUCALYPTOL ((1s,4s)-1,3,3-trimethyl-2-oxabicyclo[2.2.2]octane); EUGENOL (4-allyl-2-methoxyphenol); EVERNYL (methyl 2,4-dihydroxy-3,6-dimethylbenzoate);

[0123] Fenhydroxyl acetate ((2S)-1,3,3-trimethylbicyclo[2.2.1]heptan-2-yl acetate); Fenhydroxyl alcohol ((1S,2R,4R)-1,3,3-trimethylbicyclo[2.2.1]heptan-2-ol); Fenaldehyde (3-(4-methoxyphenyl)-2-methylpropanal); Fixambrene (3a,6,6,9a-tetramethyldodecahydronaphtho[2,1-b]furan); Fixolide (1-(3,5,5,6,8,8-hexamethyl-5,6,7,8-tetrahydronaphthalen-2-yl)ethanone); Floralozone (3-(4-ethylphenyl)-2,2-dimethylpropanal);FLORHYDRAL(3-(3-isopropylphenyl)butanal);FLORIDILE((E)-undec-9-enenitrile);FLOROCYCLENE((3aR,6S,7aS)-3a,4,5,6,7,7a-hexahydro-1H-4,7-methanoinden-6-ylpropanoate);FLOROPAL(2,4,6-trimethyl-4-phenyl-1,3-dioxane);FLOROSA HC(Tetrahydro-4-methyl-2-(2-methylpropyl)-2H-pyran-4-ol);FRESKOMENTHE(2-(sec-butyl)cyclohexanone);FRUCTONE(Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate);FRUITATE((3aS,4S,7R,7aS)-Ethyl octahydro-1H-4,7-methanoindene-3a-carboxylate);FRUTONILE(2-Methyldecanenitrile);GALBANONE PURE (1-(5,5-dimethylcyclohex-1-en-1-yl)pent-4-en-1-one); GARDENOL (1-phenylethyl acetate); GARDOCYCLENE ((3aR,6S,7aS)-3a,4,5,6,7,7a-hexahydro-1H-4,7-methanoinden-6-yl 2-methylpropanoate); GERANIOL ((E)-3,7-dimethylocta-2,6-dien-1-ol); GERANYL ACETATE ((E)-3,7-dimethylocta-2,6-dien-1-yl acetate);Geranyl Crotonate ((E)-3,7-dimethylocta-2,6-dien-1-yl but-2-enoate); Geranyl ISObutyrate ((E)-3,7-dimethylocta-2,6-dien-1-yl 2-methylpropanoate); Givescone (ethyl 2-ethyl-6,6-dimethylcyclohex-2-enecarboxylate); Habanolide ((E)-oxacyclohexadec-12-en-2-one); Hedione (methyl 3-oxo-2-pentylcyclopentaneacetate); Heliotropine CRYSTALS (Benzo[d][1,3]dioxole-5-carbaldehyde); HERBANATE ((2S)-Ethyl 3-isopropylbicyclo[2.2.1]hept-5-ene-2-carboxylate); HEXENAL-2-TRANS((E)-Hex-2-enal); HEXENOL-3-CIS ((Z)-Hex-3-en-1-ol); HEXENYL-3-CIS ACETATE ((Z)-Hex-3-en-1-yl acetate); HEXENYL-3-CIS BUTYRATE ((Z)-Hex-3-en-1-yl butanoate); HEXENYL-3-CIS ISOBUTYRATE ((Z)-Hex-3-en-1-yl 2-methylpropanoate); HEXENYL-3-CIS SALICYLATE ((Z)-Hex-3-en-1-yl 2-hydroxybenzoate); HEXYL ACETATE; HEXYL BENZOATE; HEXYL BUTYRATE; HEXYL CINNAMIC ALDEHYDE ((E)-2-benzylideneoctanal); HEXYL ISOBUTYRATE (hexyl 2-methylpropanoate); HEXYL SALICYLATE (hexyl 2-hydroxybenzoate); HYDROXYCITRONELLAL (7-hydroxy-3,7-dimethyloctanal); INDOFLOR (4,4a,5,9b-tetrahydroindeno[1,2-d][1,3]dioxine); INDOLE PURE (1H-indole); INDOLENE (8,8-di(1H-indol-3-yl)-2,6-dimethyloctan-2-ol); IONONE BETA ((E)-4-(2,6,6-trimethylcyclohex-1-en-1-yl)but-3-en-2-one); IRISANTHEME ((E)-3-methyl-4-(2,6,6-trimethylcyclocyclohex-2-en-1-yl)but-3-en-2-one); IRISONE ALPHA ((E)-4-(2,6,6-trimethylcyclohex-2-en-1-yl)but-3-en-2-one); IRONE ALPHA((E)-4-(2,5,6,6-tetramethylcyclohex-2-en-1-yl)but-3-en-2-one);ISO E SUPER(1-(2,3,8,8-tetramethyl-1,2,3,4,5,6,7,8-octahydronaphthalen-2-yl)ethanone);ISOAMYL ACETATE(3-methylbutyl acetate);ISOAMYL BUTYRATE(3-methylbutyl butanoate);ISOBUTYL METHOXY PYRAZINE(2-methylpropyl 3-methoxypyrazine);ISOCYCLOCITRAL(2,4,6-trimethylcyclohex-3-enecarbaldehyde);ISOEUGENOL((E)-2-methoxy-4-(prop-1-en-1-yl)phenol);ISOJASMONE B 11(2-hexylcyclopent-2-en-1-one);ISOMENTHONE DL (2-Isopropyl-5-methylcyclohexanone); ISONONYL ACETATE (3,5,5-trimethylhexyl acetate); ISOPROPYL METHYL-2-BUTYRATE (isopropyl 2-methylbutanoate); ISOPROPYL QUINOLINE (6-isopropylquinoline); ISORALDEINE ((E)-3-methyl-4-(2,6,6-trimethylcyclohex-2-en-1-yl)but-3-en-2-one); JASMACYCLENE ((3aR,6S,7aS)-3a,4,5,6,7,7a-hexahydro-1H-4,7-methanoinden-6-yl acetate);JASMONE CIS((Z)-3-Methyl-2-(pent-2-en-1-yl)cyclopent-2-enone);JASMONYL(3-Butyl-5-methyltetrahydro-2H-pyran-4-yl acetate);JASMOPYRANE FORTE(3-Pentyltetrahydro-2H-pyran-4-yl acetate);JAVANOL((1-Methyl-2-((1,2,2-trimethylbicyclo[3.1.0]hexan-3-yl)methyl)cyclopropyl)methanol);KOAVONE((Z)-3,4,5,6,6-Pentamethylhept-3-en-2-one);LAITONE(8-Isopropyl-1-oxaspiro[4.5]decan-2-one);LEAF ACETAL ((Z)-1-(1-ethoxyethoxy)hex-3-ene);LIFFAROME ((Z)-hex-3-en-1-yl methyl carbonate);LILIAL (3-(4-(tert-butyl)phenyl)-2-methylpropanal);LINALOOL (3,7-dimethylocta-1,6-dien-3-ol);LINALOOL OXIDE (2-(5-methyl-5-vinyltetrahydrofuran-2-yl)propan-2-ol);LINALYL ACETATE (3,7-dimethylocta-1,6-dien-3-yl acetate);

[0124] MAHONIAL ((4E)-9-HYDROXY-5,9-DIMETHYL-4-DECENE);MALTOL (3-HYDROXY-2-METHYL-4H-PYRAN-4-ONE);MALTYL ISOBUTYRATE (2-METHYL-4-OXO-4H-PYRAN-3-YL 2-METHYLPROPANOATE);MANZANATE (ETHYL 2-METHYLPENTANOATE);MAYOL ((4-ISOPROPYLCYCLOHEXYL)METHANOL);MEFROSOL (3-METHYL-5-PHENYLPENTAN-1-OL);MELONAL (2,6-DIMETHYLHEPTA-5-ENAL);MERCAPTO-8-METHANE-3-ONE (MERCAPTO-PARA-MENTHAN-3-ONE);METHYL ANTHRANILATE (METHYL 2-AMINOBENZOATE);METHYL BENZOATE (METHYL BENZOATE);METHYL CEDRYL KETONE (1-((1S,8aS)-1,4,4,6-tetramethyl-2,3,3a,4,5,8-hexahydro-1H-5,8a-methanoazulen-7-yl)ethanone); METHYL CINNAMATE (methyl 3-phenylprop-2-enoate); METHYL DIANTILIS (2-ethoxy-4-(methoxymethyl)phenol); METHYL DIHYDRO ISOJASMONATE (methyl 2-hexyl-3-oxocyclopentane-1-carboxylate); METHYL HEPTENONE PURE (6-methylhept-5-en-2-one); METHYL LAITONE (8-methyl-1-oxaspiro[4.5]Decan-2-one;METHYL NONYL KETONE (UNDECAN-2-ONE);METHYL OCTYNE CARBONATE (METHYL NON-2-YNOATE);METHYL PAMPLEMOUSSE (6,6-DIMETHOXY-2,5,5-TRIMETHYLHEX-2-ENE);METHYL SALICYLATE (METHYL 2-HYDROXYBENZOATE);MUSCENONE ((Z)-3-METHYLCYCLOPENTADECAN-5-ENONE);MYRALDENE (4-(4-METHYLPENT-3-EN-1-YL)CYCLOHEX-3-ENECARBALDEHYDE);MYRCENE (7-METHYL-3-METHYLENEOCTA-1,6-DIENE);MYSTIKAL (2-METHYLUNDECANOIC ACID);NECTARYL (2-(2-(4-METHYLCYCLOHEX-3-EN-1-YL)PROPYL)CYCLOPENTANONE);NEOBERGAMATE FORTE (2-methyl-6-methyleneoct-7-en-2-yl acetate); NEOCASPIRENE EXTRA (10-isopropyl-2,7-dimethyl-1-oxaspiro[4.5]Deca-3,6-diene; NEOFOLIONE((E)-methylnon-2-enoate); NEROLEX((2Z)-3,7-dimethylocta-2,6-dien-1-ol); NEROLIDOL((Z)-3,7,11-trimethyldodeca-1,6,10-trien-3-ol); NEROLIDYLE((Z)-3,7,11-trimethyldodeca-1,6,10-trien-3-yl acetate); NEROLINE CRYSTALS(2-ethoxynaphthalene); NEROLIONE(1-(3-methylbenzofuran-2-yl)ethanone); NERYL ACETATE((Z)-3,7-DIMETHYLOCTA-2,6-DIEN-1-YL ACETATE);NIRVANOLIDE((E)-13-METHYLOXACYCLOPENTADECAN-10-EN-2-ONE);NONADIENAL((2E,6Z)-NONA-2,6-DIENEAL);NONADIENOL-2,6((2Z,6E)-2,6-NONADIEN-1-OL);NONADYL(6,8-DIMETHYLNONAN-2-OL);NONALACTONE GAMMA(5-PENTYLOXOLAN-2-ONE);NONENAL-6-CIS((Z)-NONA-6-ENAL);NONENOL-6-CIS((Z)-NONA-6-EN-1-OL);NOPYL ACETATE (2-(6,6-dimethylbicyclo[3.1.1]hept-2-en-2-yl)ethyl acetate); NYMPHEAL (3-(4-(2-methylpropyl)-2-methylphenyl)propanal); OCTALACTONE DELTA (6-propyltetrahydro-2H-pyran-2-one); METHYL HEXYL KETONE (octan-2-one); ORANGER CRYSTALS (1-(2-naphthalenyl)-ethanone); ORIVONE (4-(tert-pentyl)cyclohexanone);.

[0125] PANDANOL ((2-METHOXYETHYL)BENZENE);PARA TERT BUTYL CYCLOHEXYL ACETATE (4-(tert-butyl)cyclohexyl acetate);PARADISAMIDE (2-ETHYL-N-METHYL-N-(m-TOLYL)BUTANAMIDE);PEACH PURE (5-Heptyldihydrofuran-2(3H)-one);PELARGENE (2-METHYL-4-METHYLENE-6-PHENYLTETRAHYDRO-2H-PYRAN);PELARGOL (3,7-DIMETHYLOCTANE-1-OL);PEONILE (2-CYCLOHEXYLIDENE-2-PHENYLACETONITRILE);PETALIA (2-CYCLOHEXYLIDENE-2-(O-TOLYL)ACETONITRILE);PHARAONE (2-CYCLOHEXYLHEPTA-1,6-DIEN-3-ONE);PHENOXY ETHYL ISOBUTYRATE (2-(PHENOXY)ETHYL 2-METHYLPROPANOATE);PHENYL ACETALDEHYDE (2-PHENYL-ETHANAL);PHENYL ETHYL ACETATE (2-PHENYLETHYL ACETATE);PHENYL ETHYL ALCOHOL (2-PHENYLETHYL ETHANOL);PHENYL ETHYL ISOBUTYRATE (2-PHENYLETHYL 2-METHYLPROPANOATE);PHENYL ETHYL PHENYL ACETATE (2-PHENYLETHYL 2-PHENYLACETATE);PHENYL PROPYL ALCOHOL (3-PHENYLPROPAN-1-OL);PINENE ALPHA (2,6,6-TRIMETHYLBICYCLO[3.1.1]HEPTA-2-ENE);PINENE BETA (6,6-dimethyl-2-methylenebicyclo[3.1.1]heptane); PINOACETALDEHYDE (3-(6,6-dimethylbicyclo[3.1.1]hept-2-en-2-yl)propanal); PIVAROSE (2,2-dimethyl-2-phenylethylpropanoate); POMAROSE ((2E,5E)-5,6,7-trimethylocta-2,5-dien-4-one); POMELOL (2,4,7-trimethyl-6-octen-1-ol); PRECYCLEMONE B (1-methyl-4-(4-methylpent-3-en-1-yl)cyclohex-3-enecarbaldehyde);PRENYL ACETATE (3-METHYLBUTYL-2-EN-1-YL ACETATE); PRUNOLIDE (5-PENTYLDIHYDROFURAN-2(3H)-ONE); RADJANOL SUPER ((E)-2-ETHYL-4-(2,2,3-TRIMETHYLCYCLOPENT-3-EN-1-YL)BUTA-2-EN-1-OL); RASPBERRY KETONE (4-(4-HYDROXYPHENYL)BUTA-2-ONE); RHUBAFURAN (2,4-DIMETHYL-4-PHENYLTETRAHYDROFURAN); ROSACETOL (2,2,2-TRICHLORO-1-PHENYL ETHYL ACETATE); ROSALVA (DECA-9-EN-1-OL); ROSE OXIDE (4-METHYL-2-(2-METHYLPROP-1-EN-1-YL)TETRAHYDRO-2H-PYRAN); ROSE OXIDE CO(4-methyl-2-(2-methylprop-1-en-1-yl)tetrahydro-2H-pyran);ROSYFOLIA(1-methyl-2-(5-methylhex-4-en-2-yl)cyclopropylmethanol);ROSYRANE SUPER(4-methylene-2-phenyltetrahydro-2H-pyran);SAFRALEINE(2,3,3-trimethyl-1-indanone);SAFRANAL(2,6,6-trimethylcyclohexa-1,3-dienecarbaldehyde);SANDALORE EXTRA(3-methyl-5-(2,2,3-trimethylcyclopent-3-en-1-yl)pentan-2-ol);SCENTAURUS CLEAN(ethyl (Z)-2-acetyl-4-methyltridec-2-enoate);SCENTAURUS JUICY (4-(dodecylthio)-4-methylpentan-2-one); SERENOLIDE (2-(1-(3,3-dimethylcyclohexyl)ethoxy)-2-methylpropyl cyclopropanecarboxylate); SILVANONE SUPRA (cyclopentadecanone, hexadecanolide); SILVIAL (2-methyl-3-[4-(2-methylpropyl)phenyl]propanal); SPIROGALBANONE (1-(spiro[4.5]dec-6-en-7-yl)pent-4-en-1-one); STEMONE ((E)-5-methylheptan-3-one oxime); STYRALLYL ACETATE (1-phenylethyl acetate);SUPER MUGUET ((E)-6-ethyl-3-methyloct-6-en-1-ol); SYLKOLIDE ((E)-2-((3,5-dimethylhex-3-en-2-yl)oxy)-2-methylpropyl cyclopropanecarboxylate);

[0126] TERPINENE ALPHA(1-METHYL-4-PROPAN-2-YLCYCLOHEXA-1,3-DIENE);TERPINENE GAMMA(1-METHYL-4-PROPAN-2-YLCYCLOHEXA-1,4-DIENE);TERPINEOL(2-(4-METHYLCYCLOHEX-3-EN-1-YL)PROPAN-2-OL);TERPINEOL ALPHA(2-(4-METHYLCYCLOHEX-3-ENYL)PROPAN-2-OL);TERPINEOL PURE(2-(4-METHYLCYCLOHEX-3-EN-1-YL)PROPAN-2-OL);TERPINOLENE(1-METHYL-4-(PROPAN-2-YLIDENE)CYCLOHEXA-1-ENE);TERPINYL ACETATE(2-(4-METHYLCYCLOHEX-3-ENYL)PROPAN-2-YL ACETATE);TETRAHYDRO LINALOOL (3,7-dimethyloctan-3-ol); TETRAHYDRO MYRCENOL (2,6-dimethyloctan-2-ol); THIBETOLIDE (oxacyclohexadecan-2-one); THYMOL (2-isopropyl-5-methylphenol); TOSCANOL (1-(cyclopropylmethyl)-4-methoxybenzene); TRICYCLAL (2,4-dimethylcyclohex-3-enecarbaldehyde); TRIDECENE-2-NITRILE ((E)-tridec-2-enenitrile); TRIFENAL (3-phenylbutanal); TROPIONAL (3-(benzo[d][1,3]dioxo) TROPIONAL(3-(benzo[d][1,3]dioxol-5-yl)-2-methylpropanal); UNDECATRIENE((3E,5Z)-UNDECA-1,3,5-TRIENE); UNDECAVERTOL((E)-4-METHYLDECA-3-EN-5-OL); VANILLIN(4-HYDROXY-3-METHOXYBENZALDEHYDE); VELOUTONE(2,2,5-TRIMETHYL-5-PENTYLCYCLOPENTANONE); VELVIONE((Z)-CYCLOHEXADECAN-5-ENONE); VIOLET NITRILE((2E,6Z)-NONA-2,6-DIENENITRILE); YARA YARA(2-METHOXYNAPHTHALENE); ZINARINE(2-(2,4-DIMETHYLCYCLOHEXYL)PYRIDINE);Cedarwood oil (BOIS CEDRE ESS CHINE), Eucalyptus globulus ESS CHINA (Eucalyptus oil), Galbanum ESS (Galbanum oil), Madagascar clove oil (GIROFLE FEUILLES ESS RECT), Lavandin Grosso Oil France Orpur (Lavandin oil), Mandarin Oil Washed Cosmos (Mandarin oil), Orange Terpenes (Orange terpenes), Patchouli ESS Indonesia (Patchouli oil), Ylang Eco Essence (Iranian oil), and combinations thereof. These fragrance ingredients are particularly suitable for obtaining stable and effective microcapsules due to their favorable lipophilicity and olfactory properties.

[0127] The microcapsule composition is typically obtained in the form of a dispersion of microcapsules in an aqueous medium, also called a slurry. The microcapsule content, i.e., the solids content of the slurry, is typically 30 to 50% by weight, more specifically 35 to 45% by weight of the slurry.

[0128] biocidal active substance In one embodiment, the concentrated fabric softening composition comprises one or more biocidal actives, which are chemicals or mixtures thereof intended to have an effect of killing, repelling, neutralizing, or controlling any pest.

[0129] Suitable biocidal active substances include: alcohols and polyols, such as ethanol, propanol, isopropanol, glycerol, sorbitol, more particularly diols, even more particularly 1,2-diols, such as 1,3-butylene glycol, 1,3-propylene glycol, and 1,2-alkyldiols having 2 to 7 carbon atoms; and mixtures thereof; formaldehyde-releasing agents, such as formaldehyde, imidazolidinyl urea (CAS 39236-46-9), diazolidinyl urea (CAS 78491-02-8), DMDM ​​hydantoin (1,3-bis(hydroxymethyl)-5,5-dimethylimidazolidine-2,4-dione, CAS 6440-58-0), bronopol (2-bromo-2-nitro-1,3-propanediol, CAS 78491-02-8), and the like. 52-51-7; bronidox (5-bromo-5-nitro-1,3-dioxane, CAS 30007-47-7); nitrogen-containing compounds such as quaternium-15 (1-(3-chloroallyl)-3,5,7-triaza-1-azoniaadamantane chloride, CAS 4080-31-3), benzalkonium chloride (CAS 8001-54-5), methanamine (CAS 100-97-0), caprylic hydroxy acid, 2-hydroxyethyleneamine, sodium hydroxymethylglycinate; and more specifically isothiazolinones and alkaloids such as caffeine, nicotinamide, N,N-diethylnicotinamide, and N,N-dimethylbenzamide; hydroxypyrones and hydroxylactones such as dehydroacetic acid and glucono-delta-lactone; hydroxyesters such as lactic acid monoester; phenols, phenol derivatives and polyphenols such as palmitoyl epigallocatechin-3-gallate (e.g., green tea extract) and pyrogallol; carboxylic acids and hydroxycarboxylic acids, and their conjugate bases.

[0130] In one embodiment, the biocidal active is a mixture of methylchloroisothiazolinone and methylisothiazolinone. In one embodiment, the ratio of methylchloroisothiazolinone:methylisothiazolinone is 3:1. In one embodiment, the biocidal active is a 3:1 mixture of methylchloroisothiazolinone and methylisothiazolinone sold by Clariant under the trade name Nipaguard CG.

[0131] In one embodiment, one or more biocidal actives may be present in an amount of about 0.5% to 2%, preferably 1.3%, by weight of the concentrated fabric softening composition. In one embodiment, the concentrated fabric softening composition comprises less than about 60% water by weight.

[0132] method The compositions according to the invention can be prepared by any of the means known in the art. In one embodiment, the manufacturing method comprises the steps of: a) providing a mixture of a silicone-based polymer, a C11-C15 isoparaffinic hydrocarbon or mixtures thereof; a crosslinked copolymer of acrylamide and a cationic vinyl addition monomer crosslinked with a difunctional vinyl addition monomer, and optionally, a non-encapsulated fragrance ingredient; b) adding a copolymer of acrylamide and a cationic vinyl addition monomer to the resulting mixture of step a); c) optionally adding to the resulting mixture of step b) a microcapsule composition comprising a polymer that encapsulates the benefit agent; d) Optionally, adding one or more biocidal active substances to the mixture resulting from step c).

[0133] A preferred embodiment of a method for making a concentrated fabric softening composition according to the present invention comprises the following steps: a) adding at least one non-encapsulated fragrance ingredient to an aqueous solution of a crosslinked copolymer of acrylamide and a cationic vinyl addition monomer, which is crosslinked with a difunctional vinyl addition monomer, and a silicone-based polymer, a C11-C15 isoparaffinic hydrocarbon, or a mixture thereof, and homogenizing the mixture using a propeller; b) adding an aqueous solution of a copolymer of acrylamide and cationic vinyl addition monomer to the mixture obtained in step a) and homogenizing this new mixture uniformly under the same conditions as in step a), thereby obtaining an emulsion; c) optionally adding the microcapsule composition to the emulsion obtained in step b) and homogenizing this new mixture under the same conditions; and d) Adding the biocidal active and stopping the propeller once the biocidal active and optional microcapsule composition are uniformly dispersed.

[0134] The microcapsule composition comprising a silicone-based polymer, a C11-C15 isoparaffinic hydrocarbon or mixtures thereof; a crosslinked copolymer of acrylamide and a cationic vinyl addition monomer crosslinked with a difunctional vinyl addition monomer; a copolymer of acrylamide and a cationic vinyl addition monomer; a non-encapsulated fragrance ingredient; a polymer encapsulating a benefit agent and a biocidal active are as described herein above.

[0135] use The products of the present invention are concentrated fabric softening compositions that are intended to be stored and used after dilution in a ratio of about 45:1 (water:concentrated fabric softening composition), for example, about 35:1, about 32:1, or about 20:1.

[0136] The diluted compositions of the present invention can be used in the rinse cycle of a domestic laundry machine. The diluted compositions are preferably used in the rinse cycle of domestic textile laundry operations, where they can be added directly to the washing machine, for example, through a detergent dispenser or, in the case of top-loading washing machines, directly into the drum. The compositions can also be used in domestic hand laundry operations. The diluted compositions of the present invention may also be used, although not desired, in industrial laundry processes, for example, as a finish to soften new clothes before sale to consumers.

[0137] The present invention is further illustrated by the following non-limiting examples: Example 1: Preparation of concentrated fabric softening composition In Examples 1.1, 1.2, and 1.4-1.8, the following ingredients were added to a 0.6 L container in the amounts indicated (see Table 1): - Flosoft FS 222 (ex SNF, Polymer I) - Silicone-based polymers or C11-C15 isoparaffinic hydrocarbons (silicone / paraffin) - Non-encapsulated fragrance oil (Givaudan, free oil) Then, at room temperature, a mechanical propeller was used to stir the mixture at a speed of 100 to 300 revolutions per minute to homogenize the mixture and form an emulsion.

[0138] Flosoft LS 407 (ex SNF, Polymer II) was added to the emulsion while homogenizing at the same stirring speed for 15 minutes. To the above mixture, Nipaguard CG (ex Clariant, fungicide) was added (when indicated) and further homogenized for 5 minutes under stirring (100-300 RPM) at room temperature.

[0139] In Example 1.2, an aminoplast microcapsule composition containing encapsulated fragrance oil (encapsulated oil) prepared according to WO 2019 / 174978 A1 was added after the addition of Flosoft LS 407 (ex SNF) and further homogenized for 5 minutes with stirring at room temperature. In Example 1.3, the silicone-based polymer or C11-C15 isoparaffinic hydrocarbon was replaced with increased Flosoft FS 222 (Polymer I) and Flosoft LS 407 (Polymer II).

[0140] Samples based on the composition of Example 1.2 but using different silicone-based polymers and / or C11-C15 isoparaffinic hydrocarbons were prepared in Examples 1.4-1.8. The compositions described above are shown in Table 1.

[0141] [Table 1] The silicone-based polymers and / or C11-C15 isoparaffinic hydrocarbons used in the above examples are listed in Table 2.

[0142] [Table 2]

[0143] The composition of the non-encapsulated fragrance oil is shown in Table 3. [Table 3]

[0144] The viscosities of concentrated samples 1.2-1.8, measured using a Brookfield RV DV apparatus, are shown in Table 4. The viscosities of compositions 1.2 and 1.4-1.8 were measured at 25°C using a spindle SC4-28 at 50 rpm, while the viscosity of composition 1.3 (which did not contain a silicone-based polymer or isoparaffin) was measured at 25°C using a specific spindle 93 at 12 rpm. It is clear that the presence of a silicone-based polymer or isoparaffin is necessary to achieve acceptable viscosities in the range of 50-3000 cps.

[0145] [Table 4]

[0146] Example 2: Diluted Fabric Softener Composition at a 32:1 Dilution Ratio Compositions 1.2-1.8 were diluted with water in a 32:1 ratio (1 part concentrated composition to 32 parts water), and the viscosities of these dilutions were measured using a Brookfield RV DV at 50 RPM, spindle SC4-28, and 25°C (Table 5).

[0147] [Table 5]

[0148] As can be seen from Table 5, all diluted softeners exhibited viscosities within the desired range of about 200 cps to about 3000 cps. However, diluted composition 1.3 exhibited a clumpy appearance despite having an acceptable viscosity.

[0149] The overall performance of the diluted fabric softener at a 32:1 dilution ratio was assessed by measuring the overall preference in a softness test by 20 panelists. The protocol for measuring softness was as follows: - Numerical scale 0 to 10; 0 = not at all / 10 = softest; - The results are expressed as a percentage of the number of points each sample received.

[0150] Two parallel evaluation tests (I and II) were conducted, in each test comparing compositions according to the present invention with samples that did not contain a silicone-based polymer or isoparaffin. The results are shown in Table 6.

[0151] [Table 6]

[0152] These results show that the compositions according to the present invention received higher ratings from panel members compared to compositions that did not contain any silicone-based polymer or isoparaffin, suggesting enhanced overall performance of the compositions.

[0153] Example 3: Effect of dilution on the performance of diluted aqueous fabric softeners Composition 1.2 was diluted with water in various ratios. Composition 1.3 (comparison) was also diluted with water in a ratio of 32:1 (Table 7). The viscosity of these dilutions was measured using a Brookfield RV DV at 50 RPM, spindle SC4-28, and 25°C. The overall performance of the fabric softeners was evaluated by measuring overall preference by a panel of 20 panelists. The results are reported in Table 7.

[0154] [Table 7]

[0155] As can be seen from Table 7, fabric softening (conditioning) compositions according to the present invention can be diluted up to 45 times without loss of acceptability by panelists. All diluted compositions of Example 1.2 in Table 7 were stable and homogeneous, with the only exception being the composition from Comparative Sample 1.3, which exhibited a clumpy appearance.

Claims

1. 1. A concentrated fabric softening composition comprising: a) a silicone-based polymer, a C11-C15 isoparaffinic hydrocarbon, or a mixture thereof; b) a copolymer of acrylamide and a cationic vinyl addition monomer; and c) Crosslinked copolymers of acrylamide and cationic vinyl addition monomers that are crosslinked with difunctional vinyl addition monomers. The concentrated composition comprising:

2. 10. The concentrated composition of claim 1, wherein the silicone-based polymer is polydimethylsiloxane, cyclopentasiloxane, amino-functional polydimethylsiloxane, or a mixture thereof.

3. i) the copolymer of acrylamide and a cationic vinyl addition monomer is poly(diallyldimethylammonium chloride-co-acrylamide) copolymer; and ii) the crosslinked copolymer of acrylamide and cationic vinyl addition monomer crosslinked with a difunctional vinyl addition monomer is poly(trimethylammonioethyl methacrylate chloride-co-acrylamide) copolymer; A concentrated composition according to claim 1 or 2.

4. 4. The concentrated composition of claim 1, wherein the crosslinked copolymer of acrylamide and cationic vinyl addition monomer crosslinked with a difunctional vinyl addition monomer is a copolymer obtained from the copolymerization of 5 to 100 mole % cationic vinyl addition monomer, 0 to 95 mole % acrylamide, and 50 to 1000 ppm, preferably 350 to 1000 ppm, more preferably 450 to 1000 ppm of a difunctional vinyl addition monomer crosslinking agent.

5. The concentrate composition of any one of claims 1 to 4, wherein the difunctional vinyl addition monomer is methylenebisacrylamide.

6. 6. The concentrated composition of claim 1, wherein the crosslinked copolymer of acrylamide and cationic vinyl addition monomer crosslinked with a difunctional vinyl addition monomer is obtained from the copolymerization of about 20 mole % acrylamide, about 80 mole % dimethylaminoethyl methacrylate methyl chloride (MADAM methyl chloride), and crosslinked with 450 to 600 ppm methylenebisacrylamide.

7. 7. The concentrated composition of any one of claims 1 to 6, wherein the composition comprises from about 20% to about 50% by weight of the softener active, preferably from about 25% to about 40% by weight, and more preferably from about 27% to about 34% by weight.

8. a) about 5% to about 30%, preferably about 8% to about 20%, more preferably about 12% to about 15%, and even more preferably about 13.7% by weight of a silicone-based polymer, a C11-C15 isoparaffinic hydrocarbon, or a mixture thereof; b) in the range of about 1% to about 10%, preferably about 3% to about 5%, and more preferably about 3.5% to about 4.5% by weight of a copolymer of acrylamide and diallyldimethylammonium chloride; c) about 5% to about 25%, preferably about 12% to about 20%, more preferably about 15% to about 17% by weight of a copolymer resulting from the copolymerization of about 20 mole % acrylamide and about 80 mole % dimethylaminomethacrylic acid methyl chloride (MADAM methyl chloride), crosslinked with 450-600 ppm methylenebisacrylamide. The concentrated composition of any one of claims 1 to 7, comprising:

9. the ratio of the copolymer of acrylamide and cationic vinyl addition monomer to the crosslinked copolymer of acrylamide and cationic vinyl addition monomer crosslinked with a difunctional vinyl addition monomer is between about 1:0.3 and about 1:1.8, optionally between about 1:0.5 and about 1:1.5; A concentrated composition according to any one of claims 1 to 8.

10. a) at least one non-encapsulated fragrance ingredient; b) a microcapsule composition comprising a polymer optionally encapsulating a benefit agent, wherein the benefit agent is encapsulated in a core-shell microcapsule comprising a core and a shell surrounding the core; and / or c) optionally one or more biocidal active substances The concentrated composition of any one of claims 1 to 9, further comprising:

11. the shell of the microcapsules comprises a melamine-formaldehyde polymer, a urea-formaldehyde polymer, a polyurea or polyurethane polymer, a polyamide, a polyacrylate, a polycarbonate, a polymeric stabilizer formed by a combination of a polymeric surfactant and at least one aminosilane, a complex coacervate formed by crosslinking at least one protein with a first crosslinker and at least one polysaccharide, or a hydrated polymer and a polymeric stabilizer formed by the reaction of an aminosilane with a polyfunctional isocyanate; The concentrated composition of claim 10.

12. 12. A concentrated composition according to claim 10 or claim 11, wherein the benefit agent is a fragrance ingredient, a malodour counteractant or a mixture thereof, preferably a fragrance ingredient.

13. a) providing a mixture of a silicone-based polymer, a C11-C15 isoparaffinic hydrocarbon or mixtures thereof; a crosslinked copolymer of acrylamide and a cationic vinyl addition monomer crosslinked with a difunctional vinyl addition monomer, and optionally, a non-encapsulated fragrance ingredient; b) adding a copolymer of acrylamide and a cationic vinyl addition monomer to the resulting mixture of step a); c) optionally adding to the resulting mixture of step b) a microcapsule composition comprising a polymer that encapsulates the benefit agent; d) optionally adding one or more biocidal active substances to the mixture resulting from step c); 13. A method for producing a concentrate composition according to any one of claims 1 to 12, comprising the steps of:

14. Use of the concentrate composition according to any one of claims 1 to 12, The above use comprises mixing the concentrated composition with water in a ratio of 1 part concentrated composition to up to 45 parts water, optionally up to 32 parts water, optionally up to 20 parts water, to provide a stable diluted softening composition.

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