Liquid fabric softener composition

Abstract

The present invention provides a fabric softener composition that improves the suppression of musty odors caused by damp clothes and also has good storage stability. [Solution] Components (A) to (C) below: (A) At least one flexibility-imparting substrate selected from the following components (A-1) and (A-2). (A-1) Cationic surfactant (A-2) Silicone compounds (B) Silver complexed with polymer (C) Fragrance composition A liquid fabric softener composition containing the following:

Description

[Technical Field]

[0001] This invention relates to a liquid fabric softener composition. [Background technology]

[0002] To date, various antibacterial agents have been used in fabric softeners aimed at deodorizing and preventing odors to suppress odors caused by bacteria, but none of these antibacterial agents have been sufficiently effective at deodorizing. In particular, the "musty smell" that occurs when clothes are dried indoors is a major concern for consumers, and although it is a serious problem that consumers have given up on, it has yet to be resolved. For example, technologies using silver, which has high antibacterial properties, have been disclosed (Patent Documents 1-3), but there is a need for deodorizing and antibacterial technologies that can suppress the musty smell better than the current ones. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-180387 [Patent Document 2] Japanese Patent Publication No. 2010-184883 [Patent Document 3] Japanese Patent Publication No. 2016-141892 [Overview of the Initiative] [Problems that the invention aims to solve]

[0004] To achieve both deodorizing and antibacterial properties, silver, which has high antibacterial properties, and fragrance components to mask unpleasant odors are effective. However, combining either one alone will not produce the desired deodorizing effect. Furthermore, conventional silver substrates suffer significantly from poor storage stability (especially precipitation and discoloration), and the properties when combined with fabric softener compositions may cause problems in retail sales and actual consumer use. In addition, the high concentration of fragrance components unique to fabric softener compositions can also contribute to poor storage stability. Therefore, the present invention aims to provide a fabric softener composition that improves the effect of suppressing damp odors by a silver-containing fabric softener composition, and furthermore, has good storage stability. [Means for solving the problem]

[0005] As a result of diligent research, the inventors have found that a combination of silver complexed with a polymer and a predetermined fabric softener composition results in a synergistic improvement in deodorizing performance, and furthermore, good storage stability. The present invention relates, for example, to the following [1] to [6]. [1] The following components (A) to (C): (A) At least one flexibility-imparting substrate selected from the following components (A-1) and (A-2). (A-1) Cationic surfactant (A-2) Silicone compounds (B) Silver complexed with polymer (C) Fragrance composition A liquid fabric softener composition containing the following: [2] Component (A) is, (A-1) Cationic flexible substrates consisting of long-chain quaternary ammonium salts, and / or (A-2) Polyether-modified silicone The liquid softener composition according to [1], wherein the content of component (A) is 0.1 to 20% by mass. [3] The liquid softener composition according to [1] or [2], wherein the content of silver ions derived from component (B) is 0.0000001 to 0.05% by mass, and the content of component (C) is 0.1 to 5% by mass. [4] A liquid softener composition according to any one of the above [1] to [3], wherein the mass ratio of (b) to component (C), (b) / (C), is 0.000002 to 0.05. [5] The liquid softener composition contains component (A) and component (A-2), (D) Cationic water-soluble polymer compounds A liquid softener composition according to any one of the above items [1] to [4], further containing the above. [6] The liquid softener composition according to [5], wherein component (D) is polydimethyldiallylammonium chloride or polydimethyldiallylammonium chloride / acrylamide copolymer, and the content of component (D) is 0.1 to 10% by mass. [Effects of the Invention]

[0006] According to one aspect of the present invention, a fabric softener composition can be provided that improves the suppression of musty odors compared to a fabric softener composition containing silver alone. There are no prior examples that mention the synergistic improvement of deodorizing performance in a combination of silver complexed with a polymer and a predetermined fabric softener composition. According to one aspect of the present invention, a fabric softener composition having good storage stability can be provided. According to one aspect of the present invention, it is possible to provide a fabric softener composition that has good storage stability and improves the suppression of damp odor compared to a fabric softener composition containing silver alone. [Modes for carrying out the invention]

[0007] [(A) component] In the liquid fabric softener composition of the present invention, component (A) is at least one softening base material selected from component (A-1): a cationic surfactant and component (A-2): a silicone compound. By incorporating component (A), a good texture can be imparted to the fibers. Typically, when component (A) is component (A-1), the liquid fabric softener composition becomes an emulsion composition, and when component (A) is component (A-2), the liquid fabric softener composition becomes a transparent or translucent composition. Here, transparent means that when the liquid fabric softener composition is placed in a measuring cell (a glass cell with an optical path length of 10 mm) and deionized water is placed in a control cell, the light transmittance at a wavelength of 660 nm is 95% or more, and translucent means that the transmittance is 30% or more and less than 95%.

[0008] <(A-1) component> Component (A-1) is a cationic surfactant, specifically, "at least one compound selected from the group consisting of amine compounds having 1 to 3 hydrocarbon groups having 10 to 26 carbon atoms separated by an ester group (-COO-) and / or an amide group (-NHCO-), salts thereof, and quaternary derivatives thereof." Among these, salts of tertiary amines or quaternary derivatives having at least one hydrocarbon group having 10 to 26 carbon atoms separated by an ester group or an amide group are preferred. The number of carbon atoms in a hydrocarbon group having 10 to 26 carbon atoms (hereinafter sometimes referred to as a "long-chain hydrocarbon group" in this specification) is preferably 17 to 26, and more preferably 18 to 24. A carbon number of 10 or more provides a good flexibility-imparting effect, while a carbon number of 26 or less provides good handling properties for the liquid softener composition. The long-chain hydrocarbon group may be saturated or unsaturated. If the long-chain hydrocarbon group is unsaturated, the position of the double bond may be anywhere, but if there is only one double bond, it is preferable that the double bond be located in the center or around the center of the long-chain hydrocarbon group. The long-chain hydrocarbon group may be a linear hydrocarbon group or a hydrocarbon group containing a ring in its structure, and is preferably a linear hydrocarbon group. The linear hydrocarbon group may be linear or branched. The linear hydrocarbon group is preferably an alkyl group or an alkenyl group, and more preferably an alkyl group. Long-chain hydrocarbon groups are fragmented by fragmenting groups. Fractionation may occur in one or more locations. The fragmenting groups are either ester groups (-COO-) or amide groups (-NHCO-). If a long-chain hydrocarbon group has two or more fragmenting groups, these groups may be the same or different. The carbon atoms in the fragmenting groups are counted towards the total carbon count of the long-chain hydrocarbon group. Long-chain hydrocarbon groups are typically introduced by using unhydrogenated fatty acids derived from beef tallow, fatty acids obtained by hydrogenating or partially hydrogenating the unsaturated portion, unhydrogenated fatty acids or fatty acid esters derived from plants such as palm oil and oil palm, or fatty acids or fatty acid esters obtained by hydrogenating or partially hydrogenating the unsaturated portion. In the "amine compound having 1 to 3 hydrocarbon groups having 10 to 26 carbon atoms in the molecule, which are interrupted by an ester group (-COO-) or an amide group (-NHCO-)" (hereinafter sometimes referred to as "amine compound" in this specification), the number of long-chain hydrocarbon groups is 1 to 3. Preferably, it is 2 (secondary amine compound) or 3 (tertiary amine compound), and more preferably 3.

[0009] Examples of the amine compound include a compound represented by the following general formula (A1).

Chemical formula

[0010] In general formula (A1), R 1 ~R 3 Of these, at least one is -CH2CH(Y)OCOR 4 or -(CH2) n NHCOR 5 That is. R 1 ~R 3 Two of them are -CH2CH(Y)OCOR 4 and / or (CH2) n NHCOR 5 It is preferable that this be the case. R 1 ~R 3 One or two of them are -CH2CH(Y)OCOR 4 and / or (CH2) n NHCOR 5 If so, the remaining two or one is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, -CH2CH(Y)OH (where Y is a hydrogen atom or CH3), or -(CH2) n It is NH2 (where n is 2 or 3), an alkyl group having 1 to 4 carbon atoms, -CH2CH(Y)OH, or -(CH2) n It is preferable that it be NH2. Here, the alkyl group having 1 to 4 carbon atoms is preferably a methyl group or an ethyl group, and a methyl group is particularly preferred. In -CH2CH(Y)OH, Y is -CH2CH(Y)OCOR 4 It is the same as Y inside. -(CH2) n In NH2, n is -(CH2) n NHCOR 5 It is the same as n inside.

[0011] Preferred examples of compounds represented by general formula (A1) include tertiary amine compounds represented by the following general formulas (A1-1) to (A1-7). [ka] In each of the formulas ((A1-1) to (A1-7), R 9 Each of these is independently a hydrocarbon group having 7 to 21 carbon atoms, and in formulas (A1-6) to (A1-7), R 10 Each of these is independently a hydrocarbon group having 7 to 21 carbon atoms.

[0012] R 9 and R 10 As for the hydrocarbon group having 7 to 21 carbon atoms in the above general formula (A1), R 4 Examples include hydrocarbon groups having 7 to 21 carbon atoms, and preferably alkyl and alkenyl groups having 15 to 17 carbon atoms. Note that R in the formula 9 When there are multiple R 9 They may be identical to each other, or they may be different to each other.

[0013] Component (A-1) may be a salt of an amine compound. A salt of a tertiary amine compound is preferred as the salt. Salts of amine compounds are obtained by neutralizing the amine compound with an acid. The acid used for neutralizing the amine compound can be either an organic or inorganic acid, such as hydrochloric acid, sulfuric acid, or methyl sulfuric acid. Neutralization of amine compounds can be carried out by known methods.

[0014] Component (A-1) may be a quaternary amine compound. A quaternary amine compound is preferred as the quaternary amine compound. Quaternized amine compounds are obtained by reacting the amine compound with a quaternizing agent. Examples of quaternizing agents used for quaternizing amine compounds include alkyl halides such as methyl chloride, and dialkyl sulfates such as dimethyl sulfate. When these quaternizing agents react with an amine compound, the alkyl group of the quaternizing agent is introduced to the nitrogen atom of the amine compound, forming a salt of a quaternary ammonium ion and a halogen ion or monoalkyl sulfate ion. The alkyl group introduced by the quaternizing agent is preferably an alkyl group having 1 to 4 carbon atoms, more preferably a methyl group or an ethyl group, and particularly preferably a methyl group. Quaternization of amine compounds can be carried out by known methods.

[0015] Compounds represented by general formulas (A1) and (A1-1) to (A1-7), their salts, and their quaternary derivatives may be commercially available or prepared by known methods. For example, the compound represented by general formula (A1-1) (hereinafter referred to as "compound (A1-1)") and the compound represented by general formula (A1-2) (hereinafter referred to as "compound (A1-2)") are R of general formula (A1). 4 It can be synthesized by a condensation reaction between the fatty acid composition described in the section above, or a fatty acid methyl ester composition obtained by replacing the fatty acids in the fatty acid composition with methyl esters of those fatty acids, and methyldiethanolamine. In this case, from the viewpoint of providing good flexibility, it is preferable to synthesize it so that the abundance ratio represented by "compound (A1-1) / compound (A1-2)" is 99 / 1 to 50 / 50 by mass ratio. Furthermore, when using the quaternized compound, it is more preferable to use dimethyl sulfuric acid as the quaternizing agent. In this case, from the viewpoint of imparting flexibility, it is preferable to synthesize the compound such that the ratio of "quaternized compound (A1-1) / quaternized compound (A1-2)" is 99 / 1 to 50 / 50 by mass ratio.

[0016] Compounds represented by general formula (A1-3) (hereinafter referred to as "compound (A1-3)"), compounds represented by general formula (A1-4) (hereinafter referred to as "compound (A1-4)"), and compounds represented by general formula (A1-5) (hereinafter referred to as "compound (A1-5)") are R of general formula (A1). 4 It can be synthesized by a condensation reaction between a fatty acid composition or fatty acid methyl ester composition described in the section and triethanolamine. In this case, from the viewpoint of imparting flexibility, the content ratio of each component to the total mass of compounds (A1-3), (A1-4), and (A1-5) is preferably 1 to 60% by mass for compound (A1-3), 5 to 98% by mass for compound (A1-4), and 0.1 to 40% by mass for compound (A1-5), and more preferably 30 to 60% by mass for compound (A1-3), 10 to 55% by mass for compound (A1-4), and 5 to 35% by mass for compound (A1-5). Furthermore, when using the quaternized compounds, it is more preferable to use dimethyl sulfuric acid as the quaternizing agent in order to allow the quaternization reaction to proceed sufficiently. From the viewpoint of imparting flexibility, the preferred mass ratio of the quaternized compounds of compounds (A1-3), (A1-4), and (A1-5) is 1 to 60% by mass of the quaternized compound (A1-3), 5 to 98% by mass of the quaternized compound (A1-4), and 0.1 to 40% by mass of the quaternized compound (A1-5). More preferably, the preferred ratio is 30 to 60% by mass of the quaternized compound (A1-3), 10 to 55% by mass of the quaternized compound (A1-4), and 5 to 35% by mass of the quaternized compound (A1-5). When compounds (A1-3), (A1-4), and (A1-5) are quaternized, unquaternized esteramines generally remain after the quaternization reaction. In this case, the ratio of "quaternized product / unquaternized esteramine" is preferably within the mass ratio range of 70 / 30 to 99 / 1.

[0017] Compounds represented by general formula (A1-6) (hereinafter referred to as "compound (A1-6)") and compounds represented by general formula (A1-7) (hereinafter referred to as "compound (A1-7)") are R of general formula (A1) 4It can be synthesized by a condensation reaction between the fatty acid composition described in the section above and N-(2-hydroxyethyl)-N-methyl-1,3-propylenediamine, which is synthesized by a known method described in J.Org.Chem.,26,3409(1960) from an adduct of N-methylethanolamine and acrylonitrile. In this case, it is preferable to synthesize it so that the abundance ratio expressed as "compound (A1-6) / compound (A1-7)" is 99 / 1 to 50 / 50 by mass ratio. Furthermore, when using the quaternary compound, it is preferable to use methyl chloride as the quaternizing agent, and it is preferable to synthesize it so that the abundance ratio expressed as "quaternary compound (A1-6) / quaternary compound (A1-7)" is 99 / 1 to 50 / 50 by mass ratio.

[0018] (A-1) component is, Preferably, at least one compound selected from the group consisting of compounds represented by general formula (A1), salts thereof, and quaternary compounds thereof, More preferably, at least one compound selected from the group consisting of compounds represented by general formulas (A1-1) to (A1-7), their salts, and their quaternary derivatives, A more preferable option is at least one compound selected from the group consisting of compounds represented by general formulas (A1-3) to (A1-5), their salts, and their quaternary derivatives.

[0019] Component (A-1) may be a single amine compound, its salt, or its quaternary derivative, or it may be a mixture of two or more compounds, for example, a mixture of compounds represented by general formulas (A1-3) to (A1-5). The amount of component (A-1) is not particularly limited as long as it is sufficient to achieve the purpose of formulation, but is preferably 0.1 to 20% by mass, more preferably 1 to 15% by mass, and even more preferably 1 to 12% by mass, relative to the total mass of the liquid fabric softener composition. When the amount of component (A-1) is 0.1% by mass or more, it exhibits a more sufficient softening effect as a fabric softener. When the amount of component (A-1) is 20% by mass or less, the storage stability of the liquid fabric softener composition is better.

[0020] <(A-2) component> Component (A-2) is a silicone compound, specifically a polyether-modified silicone.

[0021] Examples of component (A-2) include copolymers of alkylsiloxane and polyoxyalkylene. The alkyl group constituting the alkylsiloxane preferably has 1 to 3 carbon atoms. The alkylene group constituting the polyoxyalkylene preferably has 2 to 5 carbon atoms. Preferred polyether-modified silicones include copolymers of dimethylsiloxane and polyoxyalkylene (such as polyoxyethylene, polyoxypropylene, or random or block copolymers of ethylene oxide and propylene oxide). Specific examples include compounds represented by the following general formula (I).

[0022] [ka] [In the formula, M, N, a, and b are the average degrees of polymerization, and R is hydrogen or an alkyl group.] In general formula (I), M is 10 to 10000, preferably 50 to 1000, and more preferably 100 to 300. N is 1 to 1000, preferably 5 to 300, and more preferably 5 to 100. Furthermore, it is preferable that M > N. a is 2 to 100, preferably 5 to 50, and more preferably 5 to 20. b is between 0 and 50, preferably between 0 and 10. R is preferably hydrogen or an alkyl group having 1 to 4 carbon atoms, more preferably hydrogen. Polyether-modified silicones of general formula (I) can generally be produced by an addition reaction between an organohydrogenpolysiloxane having a Si-H group and a polyoxyalkylene alkyl ether having a carbon-carbon double bond at its terminus, such as polyoxyalkylene allyl ether.

[0023] A preferred polyether-modified silicone is a linear polysiloxane-polyoxyalkylene block copolymer represented by the following general formula (II). [ka] [In the formula, A, B, h, and i are the average degrees of polymerization, R is an alkylene group, and R' is hydrogen or an alkyl group.] In general formula (II), A is between 5 and 10000. B is between 2 and 10000. h is between 2 and 100. i ranges from 0 to 50. R is preferably an alkylene group having 1 to 5 carbon atoms. R' is preferably hydrogen or an alkyl group having 1 to 4 carbon atoms. The weight-average molecular weight of the copolymer of general formula (II) is preferably 15,000 to 100,000,000. Copolymers of general formula (II) can be produced by reacting a polyoxyalkylene compound having a reactive end group with a dihydrocarbylsiloxane having an end group that reacts with the reactive end group of the compound.

[0024] Specific examples of polyether-modified silicones include: CF1188N, BY22-029, SH3772M, SH3775M, SH3748, SH3749, SF8410, SH8700, BY22-008, SF8421, SILWET L-7001, SILWET L-7002, SILWET L-7602, SILWET L-7604, SILWET FZ-2104, SILWET FZ-2120, SILWET FZ-2161, SILWET FZ-2162, SILWET FZ-2164, SILWET FZ-2171, SILWET FZ-2222, ABN SILWET FZ-F1-009-01, ABN SILWET FZ-F1-009-02, ABN SILWET FZ-F1-009-03, ABN SILWET FZ-F1-009-05, ABN SILWET FZ-F1-009-09, ABN SILWET FZ-F1-009-11, ABN SILWET FZ-F1-009-13, ABN SILWET FZ-F1-009-54, ABN SILWET FZ-2222, X-20-8010N, KF352A, KF6008, KF615A, KF6016, KF6017, manufactured by Shin-Etsu Chemical Co., Ltd., Examples include TSF4450 and TSF4452 manufactured by GE Toshiba Silicone Co., Ltd.

[0025] (A-2) The component is a known substance and is readily available on the market or can be prepared. (A-2) Component A may be a single type or multiple types may be used in combination. The amount of component (A-2) is not particularly limited as long as the purpose of formulation is achieved, but is preferably 0.1 to 20% by mass, more preferably 0.3 to 10% by mass, and even more preferably 0.5 to 5% by mass, relative to the total mass of the liquid fabric softener composition. When the amount of component (A-2) is 0.1% by mass or more, it exhibits a more sufficient softening effect as a fabric softener. When the amount of component (A-2) is 20% by mass or less, the storage stability of the liquid fabric softener composition is better.

[0026] [(B) Component] In the liquid fabric softener composition of the present invention, component (B) is silver complexed with a polymer. When component (B) is used together with component (C), the effect of suppressing damp odor is synergistically improved compared to when component (B) or component (C) is used alone. The content of elemental silver in the silver complexed with the polymer in component (B) is, for example, 0.01 to 60% by mass, or 0.5 to 15% by mass, or 20 to 100,000 ppm, or at least 20 ppm, or 20 to 4,000 ppm, or 20 to 1,500 ppm, or 30 to 75 ppm, or at least 50 ppm, relative to its total mass. When the silver ion concentration derived from component (B) is shown in (b), (b) is preferably 0.0000001 to 0.05% by mass, more preferably 0.000005 to 0.01% by mass, and even more preferably 0.00001 to 0.005% by mass, relative to the total amount of the liquid fabric softener composition. When (b) is 0.0000001% by mass or more relative to the total amount of the liquid fabric softener composition, a high effect in suppressing musty odors is achieved. When (b) is 0.05% by mass or less relative to the total amount of the liquid fabric softener composition, discoloration does not occur during storage of the liquid fabric softener composition, and storage stability is better. Examples of silver complexed with a polymer include polymers containing at least one monomer unit selected from the group consisting of unit A represented by formula (1), unit B represented by formula (2), and unit C represented by formula (3) below (provided that the proportion of unit B to the total mass of the polymer is 99.5% by mass or less).

[0027] [ka] In formulas (1) to (3), X is selected from an unsaturated or aromatic heterocycle having at least one heteroatom selected from the group consisting of N, O, and S. n is either 0 or 1. R1 is selected from H, CH3, and CO2R4. R4 contains H, CH3, C2H5, and C3~C 24 Selected from alkyl groups, R2 is selected from H, CH3, C2H5, phenyl group, CH2CO2R5, and CO2R5. R5 is H, glycidyl group, (CH2CHR 11 O) m H, (CH2CHR 11 O) m - Selected from COCH2COCH3 and CH2CH(OH)CH2Q, R 11 It is selected from H, CH3, and phenyl groups. m is an integer between 1 and 20. Q is selected from OH, SO3Z, and X. Z is H, Na, K, and NH4 + Selected from, R3 is H, CH3, phenyl group, sulfonated phenyl group, hydroxyphenyl group, acetate group, hydroxy group, fragment O-R1, CO2R 12 , and selected from CONR6R7, R 12 These are H, CH3, C2H5, and C3~C 24 Selected from alkyl groups, R6 and R7 are independently selected from H, CH3, C2H5, C(CH3)2CH2SO3Z, and C3-C8 alkyl groups. R8 and R9 are independently H, CH3, C2H5, and C3~C, respectively. 24 Selected from alkyl groups, R 10 These are C1-C8 alkylene groups, C2-C8 alkenylene groups, and C6-C 10 Unsaturated acyclic group, C6~C 10 cyclic group, C6~C 10 Aromatic groups, oxy C2-C4 alkylene groups, and poly(oxy C2-C4 alkylene) b Selected from the base, b is an integer between 2 and 20. However, if the polymer does not contain units B and C, then R2 is CH2CO2R5 or CO2R5, R5 is CH2CH(OH)CH2Q, and Q is X.

[0028] In formulas (1) to (3) above, "alkyl" includes linear, branched, and cyclic alkyl groups, "alkylene" includes linear, branched, and cyclic alkylene groups, and "alkenylene" includes linear and branched alkenylene groups. Unsaturated or aromatic heterocycles include, for example, 5- to 7-membered heterocycles having unsaturated bonds; aromatic heterocycles having at least one heteroatom selected from the group consisting of N, O, and S; isomers of such heterocycles and combinations thereof. Furthermore, suitable heterocycles may include, for example, 5- to 7-membered heterocycles that condense together to form a larger 9- to 14-membered heterocycle having at least one N, O, or S atom; isomers of such heterocycles and combinations thereof.

[0029] The polymer in component (B) may include a heterocyclic polymer. Examples of heterocycles include imidazole, thiophene, pyrrole, oxazole, thiazole and their respective isomers (e.g., thiazole-4-yl, thiazole-3-yl, and thiazole-2-yl), tetrazole, pyridine, pyridazine, pyrimidine, pyrazine, azole, indazole, triazole and their respective isomers (e.g., 1,2,3-triazole and 1,2,4-triazole), as well as combinations thereof such as imidazole-1,2,3-triazole-1,2,4-triazole, benzotriazole, methylbenzotriazole, benzothiazole, methylbenzothiazole, benzimidazole, and methylbenzimidazole. Examples of heterocyclic polymers include polymers containing units derived from heterocyclic monomers. Examples of heterocyclic monomers include vinylimidazole and vinylpyridine. A heterocyclic polymer may contain units derived from non-heterocyclic monomers in addition to units derived from heterocyclic monomers.

[0030] (B) The polymer in component typically contains units derived from the crosslinking agent. The proportion of units derived from the crosslinking agent is preferably 0.5 to 60% by mass, more preferably 2 to 10% by mass, and even more preferably 5 to 8% by mass, based on the total mass of the polymer. Any commonly used crosslinking agent may be used, such as di-, tri-, tetra-, and higher-grade polyfunctional ethylenically unsaturated monomers.More specifically, trivinylbenzene; divinyltoluene; divinylpyridine; divinylnaphthalene; divinylxylene; ethylene glycol diacrylate; trimethylolpropane triacrylate; diethylene glycol divinyl ether; trivinylcyclohexane; allyl methacrylate ("ALMA"); ethylene glycol dimethacrylate ("EGDMA"); diethylene glycol dimethacrylate ("DEGDMA"); propylene glycol dimethacrylate; propylene glycol diacrylate; trimethylolpropane Trimethacrylate ("TMPTMA"); Divinylbenzene ("DVB"); 2,2-Dimethylpropane-1,3-Diacrylate; 1,3-Butylene glycol diacrylate; 1,3-Butylene glycol dimethacrylate; 1,4-Butanediol diacrylate; Diethylene glycol diacrylate; Diethylene glycol dimethacrylate; 1,6-Hexanediol diacrylate; 1,6-Hexanediol dimethacrylate; Tripropylene glycol diacrylate; Triethylene glycol dimethacrylate; Tetraethylene Polyethylene glycol diacrylate; polyethylene glycol 200 diacrylate; tetraethylene glycol dimethacrylate; polyethylene glycol dimethacrylate; ethoxylated bisphenol A diacrylate; ethoxylated bisphenol A dimethacrylate; polyethylene glycol 600 dimethacrylate; poly(butanediol) diacrylate; pentaerythritol triacrylate; trimethylolpropane triethoxytriacrylate; glycerylpropoxytriacrylate; pentaerythritol tetraacrylate Examples include pentaerythritol tetramethacrylate; dipentaerythritol monohydroxypentaacrylate; divinylsilane; trivinylsilane; dimethyldivinylsilane; divinylmethylsilane; methyltrivinylsilane; diphenyldivinylsilane; divinylphenylsilane; trivinylphenylsilane; divinylmethylphenylsilane; tetravinylsilane; dimethylvinyldisiloxane; poly(methylvinylsiloxane); poly(vinylhydrosiloxane); poly(phenylvinylsiloxane) and mixtures of two or more of these.

[0031] The polymer in component (B) is typically particulate. The average particle size of the polymer is preferably 1 to 200 nm, more preferably 1 to 50 nm, and even more preferably less than 10 nm. The average particle size is the number-average particle size measured by light scattering. The molecular weight of the polymer is, for example, 500 to 5000. In one embodiment of the present invention, component (B) is preferably silver complexed with a polymer in which the proportion of units derived from the crosslinking agent is less than 10% by mass, and which contains vinylimidazole as a heterocyclic monomer and has an average particle size of less than 10 nm. (B) Specific examples of components include, for example, SILVADUR® 900 Antimicrobial, SILVADUR® 930 Antimicrobial, SILVADUR® 930FLEX Antimicrobial, and SILVADUR® 960FLEX provided by LANXESS; Lurol® Ag-1500 provided by Goulston Technologies, Inc.; and Brian BG-1® provided by Matsumoto Oil & Fat Pharmaceutical Co., Ltd., with SILVADUR® 960FLEX and SILVADUR® 930FLEX Antimicrobial being more preferred.

[0032] Component (B) is incorporated in the form of a silver polymer formulation. The amount of component (B) incorporated as a formulation is not particularly limited as long as the purpose of formulation is achieved, but is preferably 0.0001 to 5% by mass, more preferably 0.001 to 3% by mass, and even more preferably 0.01 to 1% by mass, relative to the total mass of the liquid fabric softener composition. When the amount of component (B) incorporated as a formulation is 0.0001% by mass or more, it exhibits a sufficient effect in suppressing damp odor. When the amount of component (B) incorporated as a formulation is 5% by mass or less, the storage stability of the liquid fabric softener composition, in particular, the storage stability against discoloration, is better.

[0033] [(C) component] In the liquid fabric softener composition of the present invention, component (C) is a fragrance composition. When component (C) is used together with component (B), it synergistically improves the effect of suppressing damp odors compared to when component (B) or (C) is used alone. As for fragrance components, any substance known in the field of liquid fabric softeners can be used without particular restriction. Fragrance components may be used individually or in combination of multiple types. Examples of fragrance components include aldehydes, phenols, alcohols, ethers, esters, hydrocarbons, ketones, lactones, musks, fragrances with terpene skeletons, nitrogen-containing compounds such as pyrrole and indole, natural fragrances, and animal-derived fragrances. Specific examples of each fragrance are as follows. Examples of aldehydes include undecylenaldehyde, laurylaldehyde, aldehyde C-12MNA, miracaldehyde, α-amyl cinnamicaldehyde, cyclamenaldehyde, citral, citronellal, ethyl vanillin, heliotropin, anisaldehyde, α-hexyl cinnamicaldehyde, octanal, ligstral, lilial, liral, tripral, vanillin, and helional. Examples of phenols include eugenol and isoeugenol. Examples of alcohols include citronellol, dihydromyrcenol, dihydrolinalool, geraniol, linalool, nerol, sandalol, santarex, terpineol, tetrahydrolinalool, menthol, borneol, 1-decanal, bacdanol, and phenylethyl alcohol. Examples of ethers include Sedlumber, Grisalva, methyl eugenol, and methyl isoeugenol. Examples of esters include cis-3-hexenyl acetate, cis-3-hexenyl propionate, cis-3-hexenyl salicylate, p-cresyl acetate, pt-butylcyclohexyl acetate, amyl acetate, methyl dihydrojasmonate, amyl salicylate, benzyl salicylate, benzyl benzoate, benzyl acetate, cedyl acetate, citronellyl acetate, and decahydro-β-naphthyl acetate. Examples include acetate, dimethylbenzylcarbinyl acetate, erica propionate, ethyl acetate, erica acetate, geranyl acetate, geranyl formate, hedione, linalyl acetate, β-phenylethyl acetate, hexyl salicylate, styraryl acetate, terpinyl acetate, vetiveryl acetate, OT-butylcyclohexyl acetate, manzanate, and allyl heptanoate. Examples of hydrocarbons include limonene (especially d-limonene), α-pinene, β-pinene, myrcene, camphene, and terpinolene. Examples of ketones include α-ionone, β-ionone, methyl-β-naphthylketone, α-damascone, β-damascone, δ-damascone, damascenone, cis-jasmone, methylionone, allylionone, cashmeran, dihydrojasmone, isoesuper, beltfix, isolonediforanone, coavon, carvone, rosephenone, raspberry ketone, dynascone, and maltol. Examples of lactones include γ-decalactone, γ-undecalactone, γ-nonalactone, γ-dodecalactone, coumarin, and ambroxan. Examples of musk compounds include cyclopentadecanolide, ethylene brassirate, galaxolide, musk ketone, tonalide, tonalide, and nitromusks. Examples of fragrances containing a terpene skeleton include geraniol, nerol, linalool, citral, citronellol, menthol, mint, citronellal, myrcene, α-pinene, β-pinene, limonene, terpinellol, carvone, ionone (e.g., β-ionone), camphene, and borneol. Examples of nitrogen-containing compounds include pyrrole, indole, methylindole, and skatole. Examples of natural fragrances include essential oils such as orange oil, lemon oil, lime oil, petitgrain oil, yuzu oil, neroli oil, bergamot oil, lavender oil, lavandin oil, abies oil, anise oil, bay oil, rose oil, ylang-ylang oil, citronella oil, geranium oil, peppermint oil, spearmint oil, eucalyptus oil, lemongrass oil, patchouli oil, jasmine oil, rose oil, cedar oil, vetiver oil, galbanum oil, oakmoss oil, pine oil, camphor oil, sandalwood oil, fragrant camphor oil, turpentine oil, clove oil, clove leaf oil, cassia oil, nutmeg oil, cananga oil, and thyme oil. Examples of animal-derived fragrances include musk, spirit cat incense, sea lion incense, and ambergris.

[0034] If component (C) consists of multiple types of fragrance components, the average ClogP value of component (C) is calculated by taking the weighted average of the ClogP values ​​of each fragrance component according to their respective proportions. (C) A higher proportion of relatively hydrophilic components with an average ClogP value of 1.5 to 3.0 is more effective in suppressing the musty smell of damp clothes. On the other hand, a higher proportion of relatively hydrophobic components, with an average ClogP value of 3.0 to 5.0 for component (C), results in better storage stability against discoloration and precipitation. (C) Among the fragrance components that contribute to storage stability against coloring, examples include aldehydes such as ethyl vanillin and nitrogen-containing compounds such as indole, and the lower the amount of these components, the better the storage stability. The total amount of aldehydes and nitrogen-containing compounds such as indole in the fragrance components of (C) is preferably 50% by mass or less, more preferably 20% by mass or less, and even more preferably 10% by mass or less, based on the total mass of the fragrance composition.

[0035] (C) Component may contain fragrance solvents commonly used in liquid fabric softeners. Examples of fragrance solvents include acetin (triacetin), MMB acetate (3-methoxy-3-methylbutyl acetate), sucrose diacetate hexisobutyrate, ethylene glycol dibutyrate, hexylene glycol, dibutyl sebacate, Deltil Extra (isopropyl myristate), methyl carbitol (diethylene glycol monomethyl ether), carbitol (diethylene glycol monoethyl ether), TEG (triethylene glycol), benzyl benzoate (BB), propylene glycol, diethyl phthalate, tripropylene glycol, avorin (dimethyl phthalate), Deltil Prime (isopropyl palmitate), dipropylene glycol (DPG), Examples include farnesene, dioctyl adipate, tributylin (glyceryl tributanoate), hydrolyte-5 (1,2-pentanediol), propylene glycol diacetate, cetyl acetate (hexadecyl acetate), ethyl abietate, avalin (methyl abietate), Citroflex A-2 (acetyl triethyl citrate), Citroflex A-4 (tributyl acetyl citrate), Citroflex No. 2 (triethyl citrate), Citroflex No. 4 (tributyl citrate), Durafix (methyl dihydroabietate), MITD (isotridecyl myristate), polylimonene (limonene polymer), and 1,3-butylene glycol. The content of the fragrance solvent is, for example, 0.1 to 30% by mass, preferably 1 to 20% by mass, relative to the total mass of the fragrance composition.

[0036] The amount of component (C) is not particularly limited as long as the purpose of formulation is achieved, but is preferably 0.1 to 8% by mass, more preferably 0.1 to 5% by mass, and even more preferably 0.5 to 2% by mass, relative to the total mass of the liquid fabric softener composition. When the amount of component (C) is within the range of 0.1 to 8% by mass, it can sufficiently exert an effect of suppressing damp odor and achieve better storage stability against discoloration and precipitation. In the liquid fabric softener composition of the present invention, the mass ratio of component (B) to component (C), (B) / (C), is preferably 0.00002 to 50, more preferably 0.0003 to 10, and even more preferably 0.002 to 1. When (B) / (C) is 0.00002 or more, the damp odor suppression effect is sufficiently exhibited. When (B) / (C) is 50 or less, both the damp odor suppression effect, storage stability against discoloration and precipitation are better. In the liquid fabric softener composition of the present invention, the mass ratio of (b) to component (C), (b) / (C), is preferably 0.000002 to 0.05, more preferably 0.000005 to 0.01, and even more preferably 0.00001 to 0.001. When (b) / (C) is 0.000002 or more, the effect of suppressing musty odors is sufficiently exhibited. When (b) / (C) is 0.05 or less, both the effect of suppressing musty odors, storage stability against discoloration and precipitation are better.

[0037] [Optional ingredients] The liquid fabric softener composition of the present invention may contain additives commonly used in fabric softeners, to the extent that they do not interfere with the effects of the present invention.

[0038] <Cationic water-soluble polymer compounds> In the liquid softener composition of the present invention, a cationic water-soluble polymer compound may be incorporated as component (D). Component (D) can contribute to improving storage stability against precipitation. Furthermore, component (D) is preferably used in combination with component (A-2) because it promotes the adsorption of component (A-2) to the surface of textile products and improves the effect of imparting a good texture to the fibers. (D) Component is water-soluble. In this specification, "water-soluble" means that the solution obtained by adding 1 g of the test substance to 100 g of water at 25°C is colorless and transparent. Component (D) is cationic when dissolved in water. Component (D) preferably has a cationization degree of 0.1% or more (e.g., 0.1 to 35%), and more preferably 2.5% or more (e.g., 2.5 to 15%), as described later. When the cationization degree is within the above range, the adsorption of component (A-2) to textile products can be further enhanced, and the cost increase due to excessive formulation can be prevented.

[0039] If component (D) is (i) a polymer of cationic monomers, (ii) a copolymer of cationic monomers and nonionic monomers, or (iii) a nonionic polymer in which a portion is modified or substituted with cationic groups (such as cationized cellulose), the degree of cationization is defined as the value calculated by the following formula (1). Degree of cationization (%) = X × Y × 100 Equation (1) [X: Atomic weight of cationized atoms (such as nitrogen) in the cationic group of a polymer compound Y: Number of moles of cationic groups contained in 1g of polymer compound.

[0040] If component (D) is (i) a copolymer of a cationic monomer and an anionic monomer, or (ii) a copolymer of a cationic monomer, anionic monomer and a nonionic monomer, the degree of cationization is defined as the value calculated by the following formula (2). Degree of cationization (%) = X × (YZ) × 100 Equation (2) [X: Atomic weight of cationized atoms (such as nitrogen) in the cationic group of a polymer compound Y: Number of moles of cationic groups contained in 1g of polymer compound Z: Number of moles of anionic groups contained in 1g of polymer compound (Examples of anionic groups of Z include carboxyl groups and sulfonic acid groups contained in monomer units within polymer chains (for example, carboxylic acid groups in acrylic acid). However, counterions of cationic groups are not included.)

[0041] As an example, the procedure for calculating the degree of cationization of MERQUAT280 (manufactured by Lubrizol Nippon Co., Ltd.), represented by the following formula (III), which is a copolymer of a cationic monomer and an anionic monomer (mass ratio of dimethyldiallylammonium chloride to acrylic acid = 80:20; in formula (III), m:n = 65:35).

[0042] [ka]

[0043] X: 14 (atomic weight of a nitrogen atom) Y: 4.95 × 10 -3 (Calculated from the weight of cationic groups per gram: 0.8g and the molecular weight of the cationic groups) Z:2.78×10 -3 (Calculated from the weight of the anionic group per gram: 0.2g and the molecular weight of the anionic group) From equation (2), the degree of cationization (%) = 14 × (4.95 × 10 -3 -2.78 × 10 -3 ) × 100 = 3.0 That is the case.

[0044] According to the method for calculating the degree of cationization described above, the degree of cationization of polymers of nonionic monomers and polymers of anionic monomers is 0.

[0045] The weight-average molecular weight of component (D), when measured by gel permeation chromatography using polyethylene glycol as a standard substance, is preferably 1,000 to 5,000,000, more preferably 3,000 to 2,000,000, and even more preferably 5,000 to 500,000. Within the aforementioned weight-average molecular weight range, the adsorption of component (A-2) to textile products is enhanced, and the increase in viscosity of the liquid softener composition is suppressed, resulting in excellent usability.

[0046] Component (D) can be any of the aforementioned water-soluble and cationic polymers without particular limitation, but preferably it is a water-soluble polymer having one or more cationic groups selected from amino groups, amine groups, and quaternary ammonium groups. Examples of component (D) include: Polymers of dimethyldiallylammonium chloride (polydimethyldiallylammonium chloride), such as Noverite310 (manufactured by Lubrizol Japan), MERQUAT100 (manufactured by Lubrizol Japan), Adeka Cathioace PD-50 (Adeka Corporation), and Daido Chemical Industries, Ltd. Dimethyldiallylammonium chloride / acrylamide copolymer such as MERQUAT550 JL5 (manufactured by Lubrizol Japan Co., Ltd.), Dimethyldiallylammonium chloride / acrylic acid copolymers such as MERQUAT295 (manufactured by Lubrizol Japan) and MERQUAT280 (manufactured by Lubrizol Japan), Cationic cellulose such as Leoguard KGP (manufactured by Lion Corporation), Imidazolinium chloride / vinylpyrrolidone copolymer such as LUVIQUAT-FC905 (manufactured by BASF), Polyethyleneimine such as LUGALVAN-G15000 (manufactured by BASF), Cationic polyvinyl alcohol such as POVAL CM318 (manufactured by Kuraray Co., Ltd.) Natural polymer derivatives containing amino groups such as chitosan, Examples include copolymers with vinyl monomers having hydrophilic groups to which diethylamino methacrylate ethylene oxide or the like has been added. (D) Component is preferably one or more selected from the group consisting of polydimethyldiallylammonium chloride and polydimethyldiallylammonium chloride-acrylic acid copolymer. A particularly preferred component (D) is a water-soluble cationic polymer obtained by polymerizing a dimethyldiallylammonium salt represented by the following general formula (IV). The structure of this polymer is usually represented by the following general formula (V) or (VI). Furthermore, a single polymer chain may contain both the structural unit of general formula (V) and the structural unit of general formula (VI).

[0047] [ka] (In the formula, X - (This represents any anion, such as a chloride ion or a bromide ion.)

[0048] [ka]

[0049] [ka] (In each formula, c and d represent the average degree of polymerization, preferably 6 to 30,000, more preferably 20 to 6,000, and even more preferably 30 to 3,000, respectively.)

[0050] Examples of water-soluble cationic polymers obtained by polymerizing dimethyldiallylammonium salt of general formula (IV) include Noverite 310 (manufactured by Lubrizol Nippon Co., Ltd.), MERQUAT 100 (manufactured by Lubrizol Nippon Co., Ltd.), Adeka Cathioace PD-50 (manufactured by Adeka Corporation), and Daidoll EC (manufactured by Daido Chemical Industries, Ltd.).

[0051] (D) Component is a known substance and is readily available on the market or can be prepared. (D) Component may be a single type or multiple types may be used in combination. The amount of component (D) is not particularly limited as long as the purpose of formulation is achieved, but is preferably 0.1 to 10% by mass, more preferably 0.5 to 8% by mass, and even more preferably 1 to 5% by mass, relative to the total mass of the liquid softener composition. When the amount of component (D) is 0.1% by mass or more, it is preferable in terms of the silicone adsorption promoting effect and the effect of improving storage stability against precipitation. When the amount of component (D) is 10% by mass or less, storage stability is better.

[0052] <Nonionic surfactant> The nonionic surfactant can be formulated to maintain good appearance stability of the liquid softener composition. Examples of the nonionic surfactant include polyoxyalkylene alkyl ethers having one or more alkyl or alkenyl groups with 8 to 20 carbon atoms, and the average number of added moles of the oxyalkylene group is preferably 1 to 100, more preferably 2 to 75. A preferred nonionic surfactant is a compound represented by the following general formula (I). R 1 -T-[(R 2 O) p -H] q (I) Each group in formula (I) is as follows. R 1 is a linear or branched alkyl or alkenyl group having 8 to 18 carbon atoms, preferably 10 to 18 carbon atoms. R 2 is an alkylene group having 2 or 3 carbon atoms, preferably an ethylene group. p is the average number of added moles, which is 2 to 75, preferably 5 to 30, particularly preferably 5 to 20. T is -O-, -N-, -NH-, -N(C2H4OH)-, -CON-, -CONH- or -CON(C2H4OH)-. When T is -O-, -NH-, -N(C2H4OH)-, -CONH-, or -CON(C2H4OH)-, q is 1. When T is -N- or -CON-, q is 2.

[0053] Specific examples of the compound of general formula (I) include compounds represented by the following general formula (II) or (III). R 1 -O-(C2H4O) r -H (II) (In formula (II), R 1 is as defined in formula (I). r is the average number of added moles, which is 2 to 75, preferably 5 to 30.) R 1 -O-(C2H4O) s (C3H6O) t -H (III) (In formula (III), R 1 is as defined in formula (I). s is the average number of moles added, and is 2 to 40, preferably 5 to 30. t is the average number of moles added, and is 1 to 20, preferably 1 to 10. (The addition of (C2H4O) and (C3H6O) may be either random or block.)

[0054] The nonionic surfactant is a known substance and is readily available in the market or can be prepared. A single type of nonionic surfactant may be used, or multiple types may be used in combination. The compounding amount of the nonionic surfactant is not particularly limited as long as the compounding purpose can be achieved. However, based on the total mass of the liquid softener composition, it is preferably 0.1 to 10% by mass, more preferably 0.5 to 7.0% by mass, and even more preferably 1.0 to 5.0% by mass. When the compounding amount of the nonionic surfactant is within the range of 0.1 to 10% by mass, it is possible to suppress the deterioration of handling properties due to an increase in the viscosity of the liquid softener composition while maintaining good appearance stability, and a more excellent compounding effect can be obtained.

[0055] <Solvent> The solvent can be compounded to improve the fluidity of the liquid softener composition. Examples of the solvent include polyhydric alcohols having 2 to 4 carbon atoms, glycol ether solvents represented by the following general formula (IV), and the like. R 1 -(OR 2 ) w OH (IV) Each group in formula (IV) is as follows. R 1 is hydrogen, an alkyl group having 1 to 6 carbon atoms, or a phenyl group. R 2 is an alkylene group having 2 to 4 carbon atoms. w represents the average number of moles added, and ranges from 1 to 30000.

[0056] Examples of polyhydric alcohols with 2 to 4 carbon atoms include ethylene glycol, propylene glycol, butylene glycol, and glycerin. Examples of glycol ether solvents represented by formula (IV) include ethylene glycol monobutyl ether, ethylene glycol monohexyl ether, ethylene glycol monophenyl ether, propylene glycol monophenyl ether, diethylene glycol monomethyl ether, and diethylene glycol monobutyl ether (R 1 is an alkyl group having 4 carbon atoms, and R 2 Examples include an alkylene group with 2 carbon atoms and w being 2. R in equation (IV) 1 Examples of compounds in which the element is hydrogen include polyethylene glycol. Preferably, the polyethylene glycol has a w value of 5 or more in formula (IV). The mass-average molecular weight of polyethylene glycol is preferably 200 to 1,320,000, more preferably 200 to 5,000, even more preferably 200 to 2,000, and particularly preferably 200 to 1,000. The mass-average molecular weight of polyethylene glycol is calculated based on a calibration curve for polyethylene glycol, using GPC with methanol as the solvent. Among these, polyethylene glycol with a mass-average molecular weight of 1,000 (w value of 22 to 24) is particularly preferred. As solvents, ethylene glycol, propylene glycol, and diethylene glycol monobutyl ether are preferred due to their excellent fluidity, mild odor, and ease of obtaining raw materials, with diethylene glycol monobutyl ether and ethylene glycol being more preferred.

[0057] A single type of solvent may be used, or multiple types may be used in combination. The amount of solvent is not particularly limited as long as the purpose of formulation is achieved, but it is preferably 5 to 15% by mass, more preferably 7 to 10% by mass, based on the total mass of the liquid softener composition. When the amount of solvent is within the range of 5 to 15% by mass, a better storage stability effect can be obtained while suppressing the leakage of a large amount of organic solvent from the liquid softener composition.

[0058] <Antifoaming agent> Antifoaming agents may be added to suppress foaming and improve the metering properties of the fabric softener composition. Examples of defoaming agents include silicone-based defoaming agents, alcohol-based defoaming agents, ester-based defoaming agents, mineral oil-based defoaming agents, vegetable oil-based defoaming agents, and synthetic oil-based defoaming agents. However, from the viewpoint of suppressing foaming during fabric softener measurement and improving metering accuracy, silicone-based or alcohol-based defoaming agents are preferred. Examples of silicone-based defoaming agents used in the present invention include oil-type defoaming agents, compound-type defoaming agents, self-emulsifying defoaming agents, emulsion-type defoaming agents, powder-type defoaming agents, and solid-type defoaming agents. Among these, self-emulsifying defoaming agents and emulsion-type defoaming agents are more preferred in terms of improving metering accuracy, and emulsion-type defoaming agents are particularly preferred. Specific examples of antifoaming agents include ethanol from Nippon Synthetic Alcohol Co., Ltd., and the FS Antifoam series from Dow Toray Industries, Inc., including DKQ1-071, DKQ1-1208, DKQ1-1086, 544, 001, 80, 81, 026A, 545, 013B, DK Q1-072, AFE, BE, DB-31, DB-110N, H-10, 025, EPL, F-18, F-20, F-51, CE, 90, 91, 92, 1122, DK Q1-1089, DK Q1-1056, DK Q1-1014, DK Q1-1074, KS496A, KS502, KS506, KS508, KS530, KS531, KS536, KS537, KS538, KM73, KM73A, KM73B, KM73E, KM72, KM72A, KM72F, KM70, KM71, KM75, KM80, KM83, KM83A, KM85, KM87A, KM89, KM90, KM93, KM68-1F, KM68-2F manufactured by Shin-Etsu Chemical Co., Ltd., and Q2-3183A, BY28-503, SD5591, SH7PA, SH5503, SH5510, SM5513 manufactured by Dow Toray Industries, Inc. Examples include SH5561, SH5507, BY22-517, SM5511, SM5512, SM5515, SM5517, SM5571, SM5572F, SM5573, and YSA6406, TSA780, TSA7341, TSA7343, TSA739, TSA732, TSA732A, TSA772, TSA730, TSA770, TSA775, TSA776, YMA6509, TSA737, TSA737B, TSA737S, TSA737F, and TSA737K, all manufactured by Momentive Performance Materials Japan LLC.

[0059] <Water> The liquid fabric softener composition is preferably an aqueous composition containing water. For the water used, tap water, deionized water, purified water, or distilled water can be used. Of these, deionized water is preferable. The water content is not particularly limited, but is preferably 50% by mass or more, and more preferably 60% by mass or more, relative to the total mass of the liquid fabric softener composition. When the water content is 50% by mass or more, the handling properties of the liquid fabric softener composition are improved.

[0060] <Preservatives> Preservatives may be added primarily to enhance the preservative and antibacterial properties of liquid fabric softener compositions and to maintain their preservative effect during long-term storage. As preservatives, any known components in the field of liquid fabric softeners can be used without particular restriction. Specific examples include isothiazolone-based organosulfur compounds, benzisothiazolone-based organosulfur compounds, benzoic acids, and 2-bromo-2-nitro-1,3-propanediol. Examples of isothiazolone-type organosulfur compounds include 5-chloro-2-methyl-4-isothiazolin-3-one, 2-n-butyl-3-isothiazolone, 2-benzyl-3-isothiazolone, 2-phenyl-3-isothiazolone, 2-methyl-4,5-dichloroisothiazolone, 5-chloro-2-methyl-3-isothiazolone, 2-methyl-4-isothiazolin-3-one, and mixtures thereof. Among these, 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one are preferred, and a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one is more preferred. A mixture in which the former is about 77% by mass and the latter is about 23% by mass, or a diluted solution thereof (e.g., isothiazolone solution), is particularly preferred. Examples of benzisothiazolon-type organosulfur compounds include 1,2-benzisothiazolin-3-one, 2-methyl-4,5-trimethylene-4-isothiazolin-3-one, related compounds such as dithio-2,2-bis(benzmethylamide), and mixtures thereof. Among these, 1,2-benzisothiazolin-3-one is particularly preferred. Examples of benzoic acids include benzoic acid or its salts, p-hydroxybenzoic acid or its salts, methyl p-hydroxybenzoate, ethyl p-hydroxybenzoate, propyl p-hydroxybenzoate, butyl p-hydroxybenzoate, and benzyl p-hydroxybenzoate. A single type of preservative may be used, or multiple types may be used in combination. The content of the preservative is not particularly limited as long as the purpose of formulation is achieved, but it is preferably 0.0001 to 1% by mass relative to the total mass of the liquid fabric softener composition. If it is 0.0001% by mass or more, the effect of the preservative is sufficiently obtained, and if it is 1% by mass or less, the high storage stability of the liquid fabric softener composition can be sufficiently maintained.

[0061] <Other optional ingredients> In addition to the ingredients mentioned above, the liquid fabric softener composition may also contain antioxidants and reducing agents to improve the stability of its fragrance and color, emulsifiers (such as polystyrene emulsion), opacifiers, shrinkage inhibitors, wrinkle inhibitors, shape-retaining agents, drape-retaining agents, ironing-enhancing agents, oxygen bleach inhibitors, whitening agents, fabric softening clay, antistatic agents, color transfer inhibitors (such as polyvinylpyrrolidone), polymer dispersants, stain removers, scum dispersants, fluorescent whitening agents (such as 4,4-bis(2-sulfostyryl)biphenyldisodium (Chiba Specialty Chemicals' Chinopearl CBS-X)), dye fixatives, fade inhibitors (such as 1,4-bis(3-aminopropyl)piperazine), stain removers, and fiber surface modifiers (cells). Enzymes such as enzymes (e.g., enzymes such as lases, amylase, protease, lipase, pectinase, and keratinase), foam inhibitors, and ingredients that impart the texture and function of silk, such as moisture absorption and release properties (silk protein powder, surface modifiers thereof, emulsified dispersions, specifically K-50, K-30, K-10, A-705, S-702, L-710, FP series (Idemitsu Petrochemical), hydrolyzed silk liquid (Jomo), Silkgen G Solubble S (Ichimaru Falcos)), and anti-fouling agents (nonionic polymer compounds consisting of alkylene terephthalate and / or alkylene isophthalate units and polyoxyalkylene units, for example, FR627 manufactured by Go-o Chemical Industry, SRC-1 manufactured by Clariant Japan, etc.) can be appropriately blended.

[0062] [pH of liquid fabric softener composition] The pH of the liquid fabric softener composition is not particularly limited, but from the viewpoint of suppressing the hydrolysis of component (A) due to storage over time, the pH at 25°C is preferably adjusted to a range of 1 to 9, and more preferably 2 to 7. For pH adjustment, hydrochloric acid, sulfuric acid, phosphoric acid, alkyl sulfuric acid, benzoic acid, p-toluenesulfonic acid, citric acid, malic acid, succinic acid, lactic acid, glycolic acid, hydroxyethanediphosphonic acid, phytic acid, ethylenediaminetetraacetic acid, short-chain amine compounds such as dimethylamine, alkali metal hydroxides such as sodium hydroxide, alkali metal carbonates, and alkali metal silicates can be used.

[0063] [Viscosity of liquid fabric softener composition] The liquid fabric softener composition has suppressed thickening and possesses a viscosity that ensures good usability (particularly handling when pouring into a washing machine and efficient discharge from the washing machine's dispenser). Specifically, the viscosity (at 25°C) is preferably less than 500 mPa·s, and more preferably less than 300 mPa·s. The viscosity can be measured using a Type B viscometer (manufactured by TOKIMEC).

[0064] [Method for preparing a liquid fabric softener composition] When (A) component (A-1) is used, the liquid fabric softener composition can be manufactured by known methods, such as the same method as for conventional liquid fabric softener compositions using a cationic surfactant as the main component. For example, an emulsion can be prepared by mixing an oil phase containing component (A), component (C), and a nonionic surfactant with an aqueous phase under conditions of a temperature above the melting point of component (A), and then adding and mixing component (B) and other components as needed to the resulting emulsion to produce the liquid fabric softener composition. The nonionic surfactant may be added in stages, not just to the oil phase, by adding it to the emulsion. When (A) component (A-2) is used, the liquid fabric softener composition can be manufactured by known methods, for example, by following the same process as for liquid fabric softener compositions mainly composed of silicone compounds. For example, the liquid fabric softener composition can be manufactured by mixing and stirring an oil phase containing component (A), component (C), and a nonionic surfactant with an aqueous phase containing component (B) and component (D).

[0065] [How to use liquid fabric softener composition] The method for treating textile products using the liquid fabric softener composition is not particularly limited and can be used in the same way as conventional liquid fabric softeners. For example, the liquid fabric softener composition can be dissolved in the rinse water during the rinsing stage of washing, or the liquid fabric softener composition can be dissolved in water in a container such as a basin, and the textile products can then be immersed in the solution. In either case, the solution is used after being diluted to an appropriate concentration, but the bath ratio (weight ratio of the treatment solution to the textile products) is preferably 3 to 100 times, and particularly preferably 5 to 50 times. Specifically, the solution is used in such an amount that the concentration of component (A) is preferably 0.01 ppm to 1000 ppm, and more preferably 0.1 ppm to 300 ppm, relative to the total amount of water used. The types of textile products that can be treated with the liquid fabric softener composition are not particularly limited and include, for example, clothing, curtains, sofas, carpets, towels, handkerchiefs, sheets, and pillowcases. The materials may also be natural fibers such as cotton, silk, and wool, or synthetic fibers such as polyester. [Examples]

[0066] The present invention will be described in more detail below with reference to examples, but the scope of the present invention is not limited thereto. In the examples, all component amounts are expressed in mass % (on a pure content basis unless otherwise specified).

[0067] [(A) component] • A-1: ​​Cationic surfactant synthesized according to the procedure described in Example 4 of Japanese Patent Publication No. 2003-12471 • A-2: Product name "CF1188N", polyether-modified silicone, manufactured by Dow-Toray Ltd.

[0068] [(B) Components] (In Tables 2 and 3 below, B indicates the raw material (%), and b indicates the silver ion concentration (%) in the fabric softener formulation.) ·B-1:Product name “SILVADUR” TM "930 FLEX Antimicrobial" (silver concentration 0.1%), manufactured by LANXESS. ·B-2:Product name “SILVADUR” TM "960 FLEX" (silver concentration 0.15%), manufactured by LANXESS. • B-3 (Comparative Example): Silver nitrate aqueous solution, Wako Pure Chemical Industries, Ltd. (silver concentration 1.08%)

[0069] [(C) component] • C-1: Fragrance composition with the composition shown in Table 1 below. [Table 1] The left column shows the names of the fragrance components, and the right column shows their content (mass %) in the fragrance composition.

[0070] [(D) component] • D-1: Product name "Noverite310", polydimethyldiallylammonium chloride, manufactured by Lubrizol Japan Co., Ltd.

[0071] [Common ingredients] (Common component I) • Product name "TA600-75" (C13AE, EO60 mol), manufactured by Lion Chemical Co., Ltd., 3.5% by mass • Product name: "Nipacide BIT20", manufactured by Clariant Japan Co., Ltd., 0.002% by mass • Product name: "GREEN BREEZE CAPS", manufactured by Givaudan, 0.25% by mass • Product name: "RHEOBYK-H 7625 V", manufactured by Bic Chemie Japan Co., Ltd., 0.01% by mass

[0072] (Common component II) • Product name "LMAG", polyoxyethylene alkyl ether (EO7 mol), manufactured by Lion Chemical Co., Ltd., 3.5% by mass • Product name: "Diethylene glycol monobutyl ether", manufactured by Lion Chemical Co., Ltd., 4.0% by mass • Product name: "Solfit", manufactured by Kuraray Co., Ltd. 4.0% by mass • Product name "KM-90", manufactured by Shin-Etsu Chemical Co., Ltd., 0.01% by mass

[0073] [Method for preparing a liquid fabric softener composition] <(A-1) Manufacturing examples using component (Examples 1-11, Comparative Examples 1-3)> A liquid softener composition with component (A-1) as the main base material was prepared using a glass container (100 mm inner diameter, 150 mm height) and a stirrer (Agitator SJ type, manufactured by Shimadzu Corporation) according to the following procedure. First, components (A-1), (C), and a nonionic surfactant were mixed and stirred to obtain an oil phase mixture. On the other hand, a preservative was dissolved in deionized water for balancing to obtain an aqueous phase mixture. The mass of the deionized water for balancing was the remainder after subtracting the total amount of the oil phase mixture, component (B), and common components other than the preservative from 980g. Next, the oil phase mixture, heated to above the melting point of component (A-1), was placed in a glass container and stirred. The aqueous phase mixture, also heated to above the melting point of component (A-1), was added in two portions and stirred. The ratio of the aqueous phase mixture was 20:80 (by mass), and stirring (at a rotation speed of 1,000 rpm) was performed for 3 minutes after the first addition of the aqueous phase mixture and for 2 minutes after the second addition. Then, component (B) and common components other than the nonionic surfactant and preservative were added to the resulting emulsion and stirred. Finally, deionized water was added to bring the total mass to 1,000 g to obtain the desired softener composition.

[0074] <(A-2) Manufacturing examples using component (Examples 12-23, Comparative Examples 4-6)> A liquid softener composition with component (A-2) as the main base material was prepared using a 1,000 ml beaker and a stirring blade according to the following procedure. First, component (A-2), component (C), nonionic surfactant, and solvent were mixed and stirred to obtain an oil phase mixture. On the other hand, component (D) was dissolved in deionized water to obtain an aqueous phase mixture. Next, while stirring the oil phase mixture, the aqueous phase mixture was added, followed by the addition of component (B) and the remaining common components. The mixture was then thoroughly stirred until homogeneous, preparing 1,000 g of liquid fabric softener composition. If necessary, an appropriate amount of hydrochloric acid (1 mol / L reagent, Kanto Chemical) or sodium hydroxide (1 mol / L reagent, Kanto Chemical) was added to adjust the pH, and then deionized water was added to bring the total mass to 1,000 g to obtain the desired fabric softener composition.

[0075] [Method for evaluating liquid fabric softener compositions] <Effect of suppressing musty odors> Used towels with a noticeable musty smell, collected from ordinary households, were used as evaluation fabric, and the effectiveness of suppressing the musty smell was verified. Using a Haier JW-K33F washing machine, the evaluation fabrics were washed (using the standard amount of "NANOX ONE Standard" on a standard cycle), softened (using the standard amount of each liquid softener composition prepared according to the "Method for Preparing Liquid Softener Compositions" described above on a standard rinse cycle), and after spinning, they were dried in a room at 30°C and 90% RH for 8 hours (indoor drying). Subsequently, six expert panelists conducted a sensory evaluation by smelling the evaluation towels after 8 hours of drying (indoor drying). This sensory evaluation was conducted based on the following evaluation criteria. Specifically, the expert panelists smelled each evaluation towel after indoor drying, assigned scores according to the following 6-level odor intensity scale, and calculated the average score. Using this average score as an indicator, the effect of suppressing the generation of musty odor was evaluated based on the following evaluation criteria. The results are listed in the "Suppression of Musty Odor" section of Tables 2 and 3. ○, ◎, or ◎◎ were considered passing grades.

[0076] (Odor intensity indication) 0 points: There is absolutely no musty smell. 1 point: There is a slight, barely noticeable musty smell. Points 2: The musty smell is not very noticeable. 3 points: The damp smell is somewhat strong. 4 points: There is a strong musty smell. 5 points: The musty smell is very strong. (Evaluation Criteria) ◎◎◎: Less than 1 point ◎◎: 1 point or more, less than 1.5 points ◎: 1.5 points or more, less than 2 points ○: 2 points or more, less than 2.5 points ×: 2.5 points or higher

[0077] <Storage Stability Evaluation> Each liquid fabric softener composition, prepared according to the "Method for Preparing Liquid Fabric Softener Compositions" described above, was placed in a standard bottle (PS11) and sealed to serve as an evaluation sample. The evaluation samples were stored at 50°C for one month. After storage, each evaluation sample was visually evaluated by six experts and scored, compared to the initial formulation of each sample. The average score was calculated, and the results were recorded in the "Storage Stability (Precipitation)" and "Storage Stability (Discoloration)" sections of Tables 2 and 3, according to the following criteria. A score of ○ or higher in each section was considered a pass.

[0078] (Visual evaluation (precipitation)) 4 points: No precipitation was observed. 3 points: Slight precipitation can be observed. Two points: Significant precipitation can be observed. 1 point: Precipitation is clearly visible. (Evaluation criteria (extraction)) ◎◎: 4 points ◎: 3.5 points or higher, less than 4 points ○: 3 points or more, less than 3.5 points ×: Less than 3 points

[0079] (Visual evaluation (discoloration)) 4 points: No change (yellowish-brown discoloration) was observed compared to the sample before storage. 3 points: Slightly changed (yellowish-brown) compared to the sample before storage. Two points: Changes (yellowish-brown discoloration) compared to the sample before storage. 1 point: Significantly changed (yellowish-brown) compared to the sample before storage. (Evaluation criteria (discoloration)) ◎◎: 4 points ◎: 3.5 points or higher, less than 4 points ○: 3 points or more, less than 3.5 points ×: Less than 3 points

[0080] [Table 2]

[0081] [Table 3]

Claims

1. The following ingredients (A) to (C): (A) At least one flexibility-imparting substrate selected from the following components (A-1) and (A-2). (A-1) Cationic surfactant (A-2) Silicone compounds (B) Silver complexed with polymer (C) Flavor composition A liquid fabric softener composition containing the following:

2. (A) Component is (A-1) A cationic flexible substrate consisting of a long-chain quaternary ammonium salt, and / or (A-2) Polyether-modified silicone The liquid softener composition according to claim 1, wherein the content of component (A) is 0.1 to 20% by mass.

3. The liquid fabric softener composition according to claim 1, wherein the content of silver ions derived from component (B) is 0.0000001 to 0.05% by mass, and the content of component (C) is 0.1 to 5% by mass.

4. The liquid softener composition according to claim 3, wherein the mass ratio of (b) to component (C), (b) / (C), is 0.000002 to 0.

05.

5. (A) component contains component (A-2), and the liquid fabric softener composition is (D) Cationic water-soluble polymer compounds A liquid softener composition according to any one of claims 1 to 4, further comprising the above.

6. The liquid softener composition according to claim 5, wherein component (D) is polydimethyldiallylammonium chloride or polydimethyldiallylammonium chloride / acrylamide copolymer, and the content of component (D) is 0.1 to 10% by mass.

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