Liquid fabric softener composition

Abstract

The present invention provides a liquid fabric softener composition that has the function of suppressing discoloration of textile products. [Solution] A liquid fabric softener composition, The following components (A) to (C): (A) At least one compound selected from the group consisting of amine compounds having 1 to 3 hydrocarbon groups with 10 to 26 carbon atoms in the molecule, separated by an ester group (-COO-) and / or an amide group (-NHCO-), salts thereof, and quaternary compounds thereof; (B) Nonionic surfactants; and, (C) A polymer obtained by polymerizing the following monomer (C-1) and monomer (C-2): (C-1) Methacrylamidopropyltrimethylammonium chloride (C-2) One or more selected from the group consisting of acrylic acid and methacrylic acid. A liquid fabric softener composition containing the following:

Description

Technical Field

[0001] The present invention relates to a liquid softener composition having a function of suppressing the discoloration of textile products.

Background Art

[0002] In recent years, from the perspective of sustainability, the development of liquid softeners imparted with the function of making textile products last longer has been carried out. For example, many liquid softeners appealing for the function of suppressing the deformation of textile products have been put on the market. On the other hand, as a function of making textile products last longer, there are few technologies related to softener compositions appealing for the suppression of discoloration of textile products (Patent Document 3), and its development is difficult. In addition, although not appealing for the function of making textile products last longer, technologies related to liquid softener compositions containing a polymer compound composed of a cationic monomer and a nonionic monomer (Patent Document 1) and technologies related to softener compositions containing a polymer material derived from the polymerization of a cationic monomer, a nonionic monomer, a crosslinking agent and a chain transfer agent (Patent Document 2) are known.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0004] The present inventor has set as an object to provide a liquid softener composition having a function of suppressing the discoloration of textile products.

Means for Solving the Problems

[0005] As a result of diligent investigation into the aforementioned problems, the inventors have found that by blending (B) a nonionic surfactant and (C) a polymer obtained by polymerizing a specific type of cationic monomer and anionic monomer into a liquid fabric softener composition containing (A) a cationic surfactant (softening base), a liquid fabric softener composition is obtained that has the function of suppressing discoloration of textile products and further exhibits excellent storage stability (suppressed phase separation). This invention is based on this finding.

[0006] In other words, the present invention relates to the following [1] to [5]. [1] A liquid softener composition, The following components (A) to (C): (A) At least one compound selected from the group consisting of amine compounds having 1 to 3 hydrocarbon groups with 10 to 26 carbon atoms in the molecule, separated by an ester group (-COO-) and / or an amide group (-NHCO-), salts thereof, and quaternary compounds thereof; (B) Nonionic surfactants; and, (C) A polymer obtained by polymerizing the following monomer (C-1) and monomer (C-2): (C-1) Methacrylamidopropyltrimethylammonium chloride (C-2) One or more selected from the group consisting of acrylic acid and methacrylic acid. A liquid fabric softener composition containing the following: [2] The liquid softener composition according to [1], wherein component (C) is a polymer obtained by polymerizing monomer (C-1), monomer (C-2), and nonionic monomer (C-3). [3] The liquid softener composition according to [2], wherein the nonionic monomer (C-3) is at least one selected from the group consisting of acrylamide, methyl acrylate, and methyl methacrylate. [4] The liquid softener composition according to [1], wherein the mass ratio (A / C) of component (A) to component (C) is 2 to 75. [5] Furthermore, component (D) below: (D) Nonionic polymer having a urethane backbone A liquid softener composition according to [1] above, comprising: [Effects of the Invention]

[0007] As shown in the examples described later, the liquid fabric softener composition of the present invention can suppress discoloration of textile products. Therefore, the present invention can provide a liquid fabric softener with added value not found in conventional products. [Modes for carrying out the invention]

[0008] [(A) Component: Cationic surfactant] Component (A) is primarily added to textile products to impart flexibility (texture). Furthermore, component (A) also has the effect of improving the storage stability of the liquid fabric softener composition. Component (A) is "at least one compound selected from the group consisting of amine compounds having 1 to 3 hydrocarbon groups with 10 to 26 carbon atoms in the molecule, separated by an ester group (-COO-) and / or an amide group (-NHCO-), salts thereof, and quaternary compounds thereof." In particular, salts of tertiary amines or quaternary derivatives thereof that have at least one hydrocarbon group having 10 to 26 carbon atoms that is separated by an ester group or amide group within the molecule are preferred. The number of carbon atoms in the hydrocarbon group having 10 to 26 carbon atoms (hereinafter also referred to as the "long-chain hydrocarbon group") is preferably 16 to 26, and more preferably 18 to 24. When the number of carbon atoms is 10 or more, the flexibility-imparting effect is good, and when it is 26 or less, the handling properties of the liquid softener composition are good. 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 is located in the center of the long-chain hydrocarbon group or around the median. 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 fragmentation groups. Fractionation may occur at one location or at two or more locations. The cleaving group is either an ester group (-COO-) or an amide group (-NHCO-). When a long-chain hydrocarbon group has two or more cleaving groups, each cleaving group may be the same or different. Note that the carbon atoms in the cleaving group are counted in the total number of carbon atoms in 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 "amine compounds having 1 to 3 hydrocarbon groups with 10 to 26 carbon atoms separated by ester groups (-COO-) and / or amide groups (-NHCO-) ​​(hereinafter also referred to as "amine compounds")", the number of long-chain hydrocarbon groups is 1 to 3. Preferably, there are 2 (secondary amine compounds) or 3 (tertiary amine compounds), and more preferably 3.

[0009] Examples of amine compounds include those represented by the following general formula (A1). [ka] (In the formula, R 1 ~R 3 Each of these is independently a hydrocarbon group with 10 to 26 carbon atoms, -CH2CH(Y)OCOR 4 (Y is a hydrogen atom or CH3, R 4 (A hydrocarbon group with 7 to 21 carbon atoms), -(CH2) n NHCOR 5 (n is 2 or 3, R5 is a hydrocarbon group having 7 to 21 carbon atoms), a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, -CH2CH(Y)OH (Y is a hydrogen atom or CH3), or -(CH2) n NH2 (n is 2 or 3), and R 1 ~R 3 at least one of them is a hydrocarbon group having 10 to 26 carbon atoms, -CH2CH(Y)OCOR 4 or -(CH2) n NHCOR 5 .) In the general formula (A1), the number of carbon atoms of the "hydrocarbon group having 10 to 26 carbon atoms" is preferably 17 to 26, more preferably 19 to 24. The hydrocarbon group may be saturated or unsaturated. As the hydrocarbon group, an alkyl group or an alkenyl group is preferable. In the group "-CH2CH(Y)OCOR 4 " in the general formula (A1), Y is preferably a hydrogen atom. R 4 is preferably a hydrocarbon group having 15 to 19 carbon atoms. When there are a plurality of R 4 in the compound represented by the general formula (A1), the plurality of R 4 may be the same as each other or may be different from each other. R 4 's hydrocarbon group is a residue (fatty acid residue) obtained by removing a carboxy group from a fatty acid having 8 to 22 carbon atoms (R 4 COOH). The fatty acid (R 4 COOH) that forms R 4 may be a saturated fatty acid or an unsaturated fatty acid, and may be a straight-chain fatty acid or a branched fatty acid. Among them, saturated or unsaturated straight-chain fatty acids are preferable. In order to impart good water absorption to the treated fiber product, the saturation / unsaturation ratio (mass ratio) of the fatty acid that forms R 4 is preferably 90 / 10 to 0 / 100, more preferably 90 / 10 to 40 / 60, and particularly preferably 90 / 10 to 50 / 50. R 4When is an unsaturated fatty acid residue, both cis and trans isomers exist, but the mass ratio of the cis / trans isomer is preferably 40 / 60 to 100 / 0, and particularly preferably 70 / 30 to 90 / 10. R 4 Specifically, examples of fatty acids that serve as the basis for this include stearic acid, palmitic acid, myristic acid, lauric acid, oleic acid, elaidic acid, linoleic acid, partially hydrogenated palm oil fatty acids (iodine value 10-60), and partially hydrogenated beef tallow fatty acids (iodine value 10-60). In particular, it is preferable to use a fatty acid composition prepared by combining two or more types selected from stearic acid, palmitic acid, myristic acid, oleic acid, elaidic acid, and linoleic acid in predetermined amounts, so as to satisfy the following conditions (a) to (c). (a) The ratio (mass ratio) of saturated fatty acids to unsaturated fatty acids is 90 / 10 to 0 / 100, more preferably 90 / 10 to 40 / 60, and particularly preferably 90 / 10 to 50 / 50. (b) The ratio (mass ratio) of the cis / trans isomer is 40 / 60 to 100 / 0, more preferably 70 / 30 to 90 / 10. (c) Fatty acids with 18 carbon atoms make up 60% by mass or more, preferably 70% by mass or more, fatty acids with 20 carbon atoms make up less than 2% by mass, and fatty acids with 21 to 22 carbon atoms make up less than 1% by mass. The base of general formula (A1) is "-(CH2) n NHCOR 5 In this context, 3 is preferred for n. R 5 As such, a hydrocarbon group having 15 to 19 carbon atoms is preferred. R in the compound represented by general formula (A1) 5 When there are multiple R 5 They may be identical to each other, or they may be different to each other. R 5 For example, R 4 Similar examples can be specifically cited.

[0010] In general formula (A1), R 1 ~R 3 Of these, at least one is a hydrocarbon group with 10 to 26 carbon atoms, -CH2CH(Y)OCOR 4or -(CH2) n NHCOR 5 ) is R 1 ~R 3 Two of them are hydrocarbon groups with 10 to 26 carbon atoms, -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 these are hydrocarbon groups with 10 to 26 carbon atoms, -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 R10 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) may be a salt of an amine compound. As the salt, a salt of a tertiary amine compound is preferred. Salts of amine compounds are obtained by neutralizing the amine compound with an acid. The acid used for neutralization 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) may be a quaternary amine compound. As the quaternary compound, a quaternary compound of a tertiary amine compound is preferred. Quaternary compounds of amine compounds are obtained by reacting the amine compound with a quaternizing agent. Examples of quaternizing agents include alkyl halides such as methyl chloride and dialkyl sulfates such as dimethyl sulfate. When these quaternizing agents are reacted with an amine compound, the alkyl group of the quaternizing agent is introduced to the nitrogen atom of the amine compound, and a salt of a quaternary ammonium ion and a halogen ion or monoalkyl sulfate ion is formed. 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. Quaternary 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 the condensation reaction of a fatty acid composition or fatty acid methyl ester composition described in the section above with triethanolamine. From the viewpoint of imparting flexibility, with respect to the total mass of compounds (A1-3), (A1-4), and (A1-5), Preferably, the content of compound (A1-3) is 1 to 60% by mass, the content of compound (A1-4) is 5 to 98% by mass, and the content of compound (A1-5) is 0.1 to 40% by mass. It is more preferable that the content of compound (A1-3) is 30-60% by mass, the content of compound (A1-4) is 10-55% by mass, and the content of compound (A1-5) is 5-35% by mass. Furthermore, when using the quaternized product, it is more preferable to use dimethyl sulfate as the quaternizing agent in order to ensure that the quaternization reaction proceeds sufficiently. In a preferred embodiment of the present invention, a composition comprising a quaternary compound of compound (A1-3), a quaternary compound of compound (A1-4), and a quaternary compound of compound (A1-5) is used. From the perspective of imparting flexibility, the total mass of the quaternary compounds of compound (A1-3), compound (A1-4), and compound (A1-5) is as follows: Preferably, the quaternary content of compound (A1-3) is 1 to 60% by mass, the quaternary content of compound (A1-4) is 5 to 98% by mass, and the quaternary content of compound (A1-5) is 0.1 to 40% by mass. It is more preferable that the quaternary content of compound (A1-3) is 30-60% by mass, the quaternary content of compound (A1-4) is 10-55% by mass, and the quaternary content of compound (A1-5) is 5-35% by mass. 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) 4 It 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) Components include: 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] (A) The components are known substances, readily available on the market, or can be prepared. (A) Component may be a single type or multiple types may be used in combination. For example, component (A) 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).

[0020] The content of component (A) is not particularly limited as long as the purpose of formulation is achieved, but is preferably 7 to 15% by mass, and more preferably 9 to 12% by mass, based on the total mass of the liquid softener composition. (A) When the content of component (A) is 7% by mass or more, it can impart superior flexibility (texture) to textile products. When the content of component (A) is 15% by mass or less, the storage stability of the liquid fabric softener composition is better.

[0021] [(B) Component: Nonionic surfactant] (B) Component is added to suppress discoloration of textile products and to provide storage stability to the liquid fabric softener composition. (B) For example, components derived from polyhydric alcohols, higher alcohols, higher amines, or higher fatty acids can be used. (B) Examples of component (B) include: Glycerin fatty acid esters or pentaerythritol, in which a fatty acid with 10 to 22 carbon atoms is esterified to glycerin or pentaerythritol; Polyoxyethylene alkyl ethers having an alkyl or alkenyl group with 10 to 22 carbon atoms, and having an average number of ethylene oxide (EO) added in moles of 10 to 100 moles; Polyoxyethylene fatty acid alkyl (alkyl group having 1 to 3 carbon atoms) ester; Polyoxyethylene alkylamines in which the average number of ethylene oxide addition moles is 10 to 100 moles; Alkyl polyglucosides having an alkyl or alkenyl group with 8 to 18 carbon atoms; or Examples include hydrogenated castor oil, which has an average number of ethylene oxide moles added of 10 to 100 moles. (B) Component is preferably a polyoxyethylene alkyl ether having an alkyl group with 10 to 18 carbon atoms and an average number of moles of ethylene oxide added of 20 to 80 moles (preferably 30 to 70 moles).

[0022] (B) Component is a known substance, readily available on the market, or can be prepared. (B) Component may be a single type or multiple types may be used in combination.

[0023] The content of component (B) is not particularly limited as long as the purpose of formulation is achieved, but is preferably 0.1 to 8% by mass, and more preferably 0.5 to 5% by mass, based on the total mass of the liquid softener composition. (B) When the content of component B is 0.01% by mass or more, the fading of textile products can be further suppressed. When the content of component B is 10% by mass or less, the storage stability of the liquid fabric softener composition is better.

[0024] [(C) Component: Amphoteric polymer] (C) component is added to suppress discoloration of textile products. Component (C) is a polymer obtained by polymerizing (C-1) methacrylamidopropyltrimethylammonium chloride and (C-2) one or more selected from the group consisting of acrylic acid and methacrylic acid. Since component (C-1) is a cationic monomer and component (C-2) is an anionic monomer, component (C) is an amphoteric polymer.

[0025] Component (C-1) is a compound also known as MAPTAC, and is represented by the following chemical structure. [ka]

[0026] Acrylic acid, one of the components of (C-2), is represented by the following chemical structure formula. [ka]

[0027] (C-2) Methacrylic acid, one of the components, is represented by the following chemical structure formula. [ka]

[0028] Component (C-2) may be either acrylic acid or methacrylic acid, or acrylic acid and methacrylic acid may be used in combination. In a preferred embodiment, (C-2) is acrylic acid.

[0029] In a preferred embodiment of the present invention, component (C) is a polymer obtained by polymerizing component (C-1), component (C-2), and a third monomer component (C-3). Component (C-3) can be a nonionic monomer, a cationic monomer other than component (C-1), or anionic monomer other than component (C-2). Preferably, component (C-3) is a nonionic monomer. Examples of nonionic monomers include acrylamide, N,N-dimethylacrylamide, C1-C4 alkyl acrylates (e.g., methyl acrylate), methyl methacrylate, and C1-C4 hydroxyalkyl acrylates. Among these, acrylamide, methyl acrylate, and methyl methacrylate are preferred.

[0030] (C-3) Acrylamide, one of the components, is represented by the following chemical structure formula. [ka]

[0031] (C-3) Methyl acrylate, one of the components, is represented by the following chemical structure. [ka]

[0032] (C-3) Methyl methacrylate, one of the components, is represented by the following chemical structure. [ka]

[0033] The (C-3) component may be used alone or in combination of two or more types. In a preferred embodiment, acrylamide or methyl acrylate is used alone as (C-3).

[0034] (C) Components are known substances, readily available on the market, or can be prepared. The following products are examples of (C) components available on the market. Product name: "Noverite304" (manufactured by Lubrizol). This product is a copolymer formed by polymerizing acrylic acid (component C-2), MAPTAC (component C-1), and methyl acrylate (component C-3). Product name: "Noverite305" (manufactured by Lubrizol). This product is a copolymer formed by polymerizing acrylic acid (component C-2), MAPTAC (component C-1), and acrylamide (component C-3). Product name: MIRAPOL SURF S-210 (manufactured by Solvay Nikka Co., Ltd.). This product is a copolymer formed by polymerizing MAPTAC (component C-1) and methacrylic acid (component C-2).

[0035] (C) Component may be a single type or multiple types may be used in combination.

[0036] The content of component (C) is not particularly limited as long as the purpose of formulation is achieved, but is preferably 0.1 to 6.0% by mass, more preferably 0.5 to 1.0% by mass, and particularly preferably 0.5 to 1.0% by mass, based on the total mass of the liquid softener composition.

[0037] [Ratio of components (A) and (C)] The mass ratio (A / C) of component (A) to component (C) in the liquid fabric softener composition is preferably 2 to 75, and more preferably 5 to 20. When A / C is between 2 and 75, a comprehensive fade-inhibiting effect can be achieved on various textile products.

[0038] [Optional ingredients] The liquid fabric softener composition may contain, as long as it does not impair the effects of the present invention, components commonly used in liquid fabric softeners (excluding components (A) to (C)) as optional components. The following provides a detailed explanation of some optional components.

[0039] [Component (D): Nonionic polymer with a urethane backbone] Component (D) is added to improve the storage stability (suppression of phase separation) of the liquid fabric softener composition. Furthermore, component (D) also contributes to improved handling and the dispersion stabilization of functional capsules (described later) when they are incorporated. Component (D) is a nonionic polymer having a urethane backbone. Preferably, component (D) is a nonionic polymer having hydrophobic groups at its molecular ends and a urethane backbone within the molecule. This polymer has repeating structural units containing urethane bonds in its main chain. Molecular ends can be both ends of the molecule. Component (D) may be a nonionic polymer having hydrophobic groups at both ends of the molecule and hydrophilic groups and a urethane backbone inside the molecule. Such a component (D) may be a rheological modifier. One mechanism by which component (D) functions as a rheological modifier is the formation of aggregates. For example, hydrophobic groups in component (D) may associate with vesicle particles formed by component (A) (a structure formed by linking vesicle particles via component (D) is called a bridging structure), and / or hydrophobic groups in component (D) may associate with each other. (D) The hydrophobic groups that component may have are not particularly limited, but include, for example, linear or branched or cyclic hydrocarbon groups such as alkyl groups and cycloalkyl groups, and optionally substituted aryl groups and arylalkyl groups. (D) The hydrophilic groups that component may have are not particularly limited, but examples include polyoxyalkylene and polyoxyalkene.

[0040] (D) Component is a known substance, readily available on the market, or can be prepared. (D) Examples of commercially available products containing this component include, for example, RHEOBYK-H 7625 VF (formerly OPTIFLO-H 7625 VF), RHEOBYK-H 7500 VF (formerly OPTIFLO-H 7500 VF), RHEOBYK-H 6500 VF (formerly OPTIFLO-H 6500 VF), RHEOBYK-H 3300 VF (formerly OPTIFLO-H 3300 VF), RHEOBYK-M 2600 VF (formerly OPTIFLO-M 2600 VF), RHEOBYK-L 1400 VF (formerly OPTIFLO-L 1400 VF) from Bic Chemie Japan Co., Ltd., and Aculyn 44, Acusol 880, and Acusol from Dow Chemical Japan Ltd. Examples include, but are not limited to, the 882, and the BASF Rheovis PU1190 and Rheovis PU1341.

[0041] One example of a method for producing component (D) is to react a polyol with an excess amount of diisocyanate to form a prepolymer having isocyanate groups at both ends, and then produce component (D) using a mixture of a monoamine (e.g., a primary monolong-chain amine) and a diamine having a hydrophobic structure. Examples of polyols that can be used include polyether polyols such as polyethylene glycol and polypropylene glycol, and polyester polyols, and the polyol will constitute the hydrophilic group in component (D). Examples of monoamines that can be used include aliphatic amines, arylaliphatic amines, and aromatic amines. Furthermore, component (D) can also be produced from a polyol, a diisocyanate, and an alcohol having a hydrophobic structure. (D) The manufacturing methods for ingredient are not limited to these.

[0042] The mass-average molecular weight of component (D) is not particularly limited, but may be, for example, 1,000 to 1,000,000, preferably 2,000 to 500,000, and more preferably 5,000 to 300,000.

[0043] (D) Component may be a single type or multiple types may be used in combination.

[0044] The content of component (D) is not particularly limited as long as the purpose of formulation is achieved, but it is preferably 0.001 to 0.1% by mass, and more preferably 0.005 to 0.05% by mass, relative to the total mass of the liquid fabric softener composition. When the content of component (D) is within this range, it is possible to better suppress phase separation of the liquid fabric softener composition when stored at 25°C while imparting appropriate viscosity, resulting in good handling properties.

[0045] [Ratio of components (C) and (D)] The mass ratio (C / D) of component (C) to component (D) in the liquid fabric softener composition is preferably 10 to 1000, and more preferably 20 to 200. When C / D is between 10 and 1000, the storage stability of the liquid fabric softener composition is further improved.

[0046] The mechanism of action and effects of component (D) are described below. As mentioned above, component (D) is thought to exist between vesicle particles made of component (A), and can form a cross-linking structure by connecting the vesicle particles together. It is thought that two effects can be obtained by forming a cross-linking structure via component (D) in this way. The first advantage is the imparting of rheological properties. In other words, the formation of a cross-linked structure is thought to provide the viscosity and thixotropy necessary for stabilizing the dispersion of capsule particles. The second point is that it prevents excessive aggregation that can cause phase separation. Component (D) has a hydrophobic portion that interacts with vesicle particles made of component (A), while its hydrophilic urethane structure does not readily interact with the hydrophobic vesicle particles, and is thought to exert a force that pushes the vesicle particles away. Therefore, it is thought that the presence of component (D) between vesicle particles maintains a constant distance between them, thus preventing excessive aggregation. Based on the mechanism of action described above, component (D) is particularly suitable for imparting rheological properties to emulsions. Compared to gums such as gellan gum, carrageenan gum, and xanthan gum, and (meth)acrylic acid polymers such as alkyl acrylate copolymers, which are commonly used as structuring agents, component (D) is advantageous in that it does not thicken easily after storage at high temperatures.

[0047] [Fragrance-free] The fragrance-free ingredients are added to the liquid fabric softener composition for fragrance, and further, to the textile product after it has been treated with the composition. Free fragrances are fragrances that are not encapsulated, and are different from the fragrances that are included as the core substance in the encapsulated fragrances (functional capsules) described later. While fragrances commonly used in the fabric softener field can be used without particular restrictions as fragrance-free materials, lists of usable fragrance ingredients are found in various publications, such as "Perfume and Flavor Chemicals," Vol. I and II, Steffen Arctander, Allured Pub. Co. (1994), "Synthetic Fragrance: Chemistry and Product Knowledge," by Motoichi Indo, Chemical Daily Co. (1996), "Perfume and Flavor Materials of Natural Origin," Steffen Arctander, Allured Pub. Co. (1994), "Encyclopedia of Fragrances," edited by the Japan Fragrance Association, Asakura Shoten (1989), "Perfumery Material Performance V.3.3," Boelens Aroma Chemical Information Service (1996), and "Flower oils and Floral Compounds In Perfumery," Danute Lajaujis Anonis, Allured Pub. Co. (1993).

[0048] Free fragrances may be used as a single type or in combination of multiple types (free fragrance composition). There are no particular restrictions on the fragrance components used in the fragrance composition, and they can be appropriately selected according to the purpose. Examples of fragrance-free ingredients include aldehydes, phenols, alcohols, ethers, esters, hydrocarbons, ketones, lactones, musks, fragrances with terpene skeletons, 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 cinnamic aldehyde, cyclamenaldehyde, citral, citronellal, ethyl vanillin, heliotropin, anisaldehyde, α-hexyl cinnamic aldehyde, 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 cedrumber, grisalva, methyl eugenol, and methyl isoeugenol. Esters include cis-3-hexenyl acetate, cis-3-hexenyl propionate, cis-3-hexenyl salicylate, p-cresyl acetate, pt-butylcyclohexyl acetate, amyl acetate, methyl dihydrojasmonate (dihydromethyljasmonate), amyl salicylate, benzyl salicylate, benzyl benzoate, benzyl acetate, cedyl acetate, citronellyl acetate, decahydro- Examples include β-naphthyl 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. 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.

[0049] When the free fragrance is used in a fragrance composition, the content of fragrance components with a ClogP value of 5 or higher is preferably 25% by mass or more, more preferably 30% by mass or more, more preferably 35% by mass or more, and particularly preferably 40% by mass or more, based on the total mass of the fragrance composition. With the above content, better fragrance persistence can be obtained. There are no particular restrictions on the types of fragrance components with a ClogP value of 5 or higher, but preferred examples include habanolide (5.0), ambroxan (5.3), tonalide (6.3), hexyl salicylate (5.1), galaxolide (6.1), muscone (6.0), exaltride (6.2), isoesuper (5.2), Beltfix (acetylcedrene) (5.0), and cedyl methyl ether (5.1) (the numbers in parentheses represent the ClogP value). Among these, habanolide, ambroxan, galaxolide, isoesuper, and tonalide are more preferred.

[0050] The ClogP value is a value that expresses the 1-octanol / water partition coefficient P, which represents the ratio of the equilibrium concentrations of a chemical substance in 1-octanol and water, in the form of a logarithmic log P with base 10. The ClogP value can be determined by the f-value method (hydrophobic fragment constant method), which involves decomposing the chemical structure of a compound into its constituent elements and accumulating the hydrophobic fragment constants ·f-values ​​of each fragment (see, for example, Clog 3 Reference Manual DaylightSoftware 4.34, Albert Leo, David Weininger, Version 1, March 1994). Generally, the higher the ClogP value of a fragrance, the more hydrophobic it is. Therefore, a fragrance composition containing a large amount of fragrance components with low ClogP values ​​can be said to be more hydrophilic than a fragrance composition containing a large amount of fragrance components with high ClogP values.

[0051] The fragrance composition may contain 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), and 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 solvent content is, for example, 0.1 to 30% by mass, preferably 1 to 20% by mass, relative to the total mass of the fragrance composition.

[0052] The fragrance composition may contain antioxidants commonly used in liquid fabric softeners. Examples of antioxidants for fragrances include 3,5-di-tert-butyl-4-hydroxytoluene (BHT), t-butyl-p-hydroxyanisole (BHA), p-methoxyphenol, β-naphthol, phenyl-α-naphthylamine, tetramethyldiaminodiphenylmethane, γ-oryzanol, vitamin E (α-tocopherol, β-tocopherol, γ-tocopherol, δ-tocopherol), 2,2'-ethylidenebis(4,6-di-t-butylphenol), tris(tetramethylhydroxypiperidinol)·1 / 3 citrate, bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate, quercetin, and 4,4'-bis(α,α-dimethylbenzyl)diphenylamine. Preferably, it is 3,5-di-tert-butyl-4-hydroxytoluene (BHT). The antioxidant content is, for example, 0.001 to 10% by mass, preferably 0.01 to 5% by mass, relative to the total mass of the fragrance composition.

[0053] The content of the fragrance-free ingredients is not particularly limited as long as the purpose of formulation is achieved, but is preferably 0.5 to 5% by mass, and more preferably 0.8 to 2% by mass, relative to the total mass of the liquid fabric softener composition.

[0054] [Functional Capsules] Functional capsules are incorporated to impart various functions, resulting from the core material encapsulated within the capsule, to liquid fabric softener compositions and / or textile products. A functional capsule consists of a core material and a wall material that covers the core material.

[0055] As the core material, any material commonly used as a capsule encapsulant in the liquid fabric softener field can be used without particular restrictions. Specific examples include fragrances, essential oils, whitening agents, insect repellents, silicones, waxes, flavorings, vitamins, skincare agents, enzymes, probiotics, dyes, pigments, fragrance precursors, cooling agents, warming agents, attractants such as pheromones, antibacterial agents, bleaching agents, flavorings, sweeteners, waxes, pharmaceuticals, fertilizers, and herbicides. The core material may be of a single type or a combination of multiple types.

[0056] As for the encapsulating material, there are no particular restrictions on the use of materials commonly used as encapsulation materials in the field of liquid softeners. Specific examples include natural polymers such as gelatin and agar, oily film-forming materials such as oils and waxes, and synthetic polymers such as polyacrylic acid, polyvinyl, polymethacrylic acid, melamine, and urethane. The wall material may be a single type or a combination of multiple types.

[0057] Specific examples of encapsulated fragrances with fragrance as the core substance include Firmenich's BLUEFLOWERPOP "FFMHN2814," Givaudan's GREEN BREEZE CAPS, ORCHARD GARDEN CAPS, RAINBOW CAPS, VELVET CAPS, AURORACAPS, and COSMICCAPS, and IFF's UNICAP101 and UNICAP503. Specific examples of cooling capsules that use a cooling agent as the core material include MultiSal SalCool, HydroSal FreshCool, and SalSphere SalCool from SALVONA Technologies, and NeoAge AROMA-C from Nikka Chemical Co., Ltd. Specific examples of heat-sensitive capsules that use a heat-sensitive agent as the core material include Riken Resin RMC-TO manufactured by Miki Riken Co., Ltd., and Hydrosal Heat manufactured by Salvona Technologies. Other specific examples include Riken Resin NFHO-W (antibacterial effect), Riken Resin RMC-HBP (insect repellent effect), and RMC-PT (insect repellent effect) manufactured by Miki Riken Co., Ltd.

[0058] The average particle size of the functional capsules is preferably 10 to 30 μm. Functional capsules having the above particle size exhibit excellent adsorption to clothing and can be stably dispersed in the liquid fabric softener composition.

[0059] Functional capsules may be of a single type or multiple types may be used in combination. The content of the functional capsules is not particularly limited as long as the purpose of formulation is achieved, but is preferably 0.0001 to 1% by mass relative to the total mass of the liquid softener composition. When the functional capsule contains encapsulated fragrance, the content of the encapsulated fragrance (based on the mass of the fragrance contained in the capsule) is preferably 0.01 to 3% by mass, more preferably 0.05 to 2% by mass, and even more preferably 0.1 to 1% by mass, relative to the total mass of the liquid fabric softener composition.

[0060] [Preservatives] Preservatives are primarily added 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 preservative content is not particularly limited as long as the purpose of the formulation is achieved, but is preferably 0.000001 to 0.0001% by mass relative to the total mass of the liquid softener composition.

[0061] [Viscosity modifier] Viscosity modifiers are added to further improve the usability of the liquid softener composition. Specific examples of viscosity modifiers include calcium chloride, magnesium chloride, sodium chloride, sodium p-toluenesulfonate, and sodium citrate. Among these, calcium chloride, magnesium chloride, and sodium citrate are preferred. A single type of viscosity modifier may be used, or multiple types may be used in combination. The content of the viscosity modifier is not particularly limited as long as the purpose of formulation is achieved, but is preferably 0.001 to 0.5% by mass relative to the total mass of the liquid softener composition.

[0062] 〔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. A water content of 50% by mass or more results in better handling properties.

[0063] [Other optional ingredients] In addition to the aforementioned ingredients, the liquid fabric softener composition contains antioxidants and reducing agents to improve the stability of its fragrance and color tone, 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, stain removers, and fiber surface modifiers (cellulase, amylase, pro). Ingredients that impart the texture and functionality of silk, such as enzymes (thease, lipase, keratinase, etc.), antifoaming agents, and moisture absorption / 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 polymers 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.

[0064] [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 6, more preferably 2 to 4. 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.

[0065] [Viscosity of liquid fabric softener composition] The viscosity of the liquid fabric softener composition is not particularly limited as long as it does not impair its usability, but it is preferably less than 1000 mPa·s. Considering the increase in viscosity due to storage over time, the viscosity immediately after manufacturing is more preferably less than 800 mPa·s, and even more preferably less than 500 mPa·s. A viscosity of less than 800 mPa·s provides good usability, such as ease of handling when adding to a washing machine. From the viewpoint of usability, there is no particular lower limit to the viscosity. Viscosity refers to the value measured at 25°C using a B-type viscometer (for example, Brookfield's analog viscometer T).

[0066] [Manufacturing method] Liquid fabric softener compositions can be manufactured by known methods, such as the same methods used for conventional liquid fabric softener compositions that use a cationic surfactant as the main ingredient. For example, it can be produced by mixing an oil phase containing components (A) and (B) with an aqueous phase under conditions of a temperature above the melting point of component (A) to prepare an emulsion, and then adding component (C) and other components as needed to the resulting emulsion and mixing. The oil phase can be prepared by mixing component (A), component (B), and other components as needed at a temperature above the melting point of component (A). The aqueous phase can be prepared by mixing water with other components as needed.

[0067] [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. The types of textile products are not particularly limited, but examples include dress shirts, T-shirts, polo shirts, blouses, chinos, suits, slacks, skirts, jackets, coats, knitwear, jeans, pajamas, tablecloths, placemats, curtains, cushions, seat cushions, sofas, pillowcases, sheets, bed pads, pillows, futons, bed covers, blankets, mattresses, shoes, toilet mats, bath mats, doormats, carpets, rugs, and carpets. The materials used in textile products are not particularly limited, but examples include natural fibers such as cotton, wool, and linen; synthetic fibers such as polyester, nylon, and acrylic; semi-synthetic fibers such as acetate; regenerated fibers such as rayon, Tencel, and polynosic; and blends, woven, and knitted products of these various fibers. [Examples]

[0068] The present invention will be described in more detail below with reference to examples, but the present invention is not limited thereto. In the examples and comparative examples, the amounts of each component are all expressed in mass percent (on a pure content basis unless otherwise specified).

[0069] [(A) Component: Cationic surfactant] I used A1 below. A1: A cationic surfactant synthesized according to the procedure described in Example 4 of Japanese Patent Publication No. 2003-12471. A-1 is a compound represented by the general formulas (A1-3), (A1-4), and (A1-5) (wherein R in each formula). 9 This composition contains a quaternized form of an alkyl or alkenyl group having 15 to 17 carbon atoms, obtained by dimethyl sulfate. (Molecular weight: 799) Furthermore, relative to the "total mass of the quaternary derivatives of compound (A1-3), compound (A1-4), and compound (A1-5)," the content of the quaternary derivative of compound (A1-3) was 50% by mass, the content of the quaternary derivative of compound (A1-4) was 30% by mass, and the content of the quaternary derivative of compound (A1-5) was 20% by mass.

[0070] [(B) Component: Nonionic surfactant] The following cells B1 to B2 were used. B1: Polyoxyethylene (60) isotridecyl ether (manufactured by Lion Chemical Co., Ltd., "TA600"). B1 corresponds to EO60 moles of polyoxyethylene isotridecyl ether (an average EO60 mole adduct of primary isotridecyl alcohol (C13)). B2: Polyoxyethylene (30) lauryl ether (EMALEC730, manufactured by Nippon Emulsion Co., Ltd.). B2 corresponds to EO30 moles of polyoxyethylene lauryl ether (an average EO30 mole adduct of lauryl alcohol (C12)).

[0071] [(C) Component: Amphoteric polymer] The following C1-C3 were used. C1: Product name "Noverite304" (manufactured by Lubrizol). C1 is a copolymer obtained by polymerizing acrylic acid (component C-2), MAPTAC (component C-1), and methyl acrylate (component C-3). C2: Product name "Noverite305" (manufactured by Lubrizol). C2 is a copolymer formed by polymerizing acrylic acid (component C-2), MAPTAC (component C-1), and acrylamide (component C-3). C3: Product name "Noverite301" (manufactured by Lubrizol Corporation). C3 is a copolymer obtained by polymerizing acrylic acid and diallyldimethylammonium chloride (DADMAC). C3 without MAPTAC (component C-1) in polymerization was used in the comparative example.

[0072] [Component (D): Nonionic polymer with a urethane backbone] The following D1 was used. D1: Product name "RHEOBYK-H 7625 VF" (manufactured by Bic Chemie Japan Co., Ltd.)

[0073] [Other ingredients] The following common ingredients were used. The values ​​in the table represent the values ​​relative to the total mass of the liquid fabric softener composition.

[0074] [(E) Component: Common component] JPEG2026103939000009.jpg52158

[0075] As a common component-free fragrance, a fragrance composition having the composition shown in the table below was used. The values ​​for each fragrance component in the table represent the mass percentage relative to the total mass of the fragrance composition.

[0076] JPEG2026103939000010.jpg11267

[0077] [Method for preparing a liquid fabric softener composition] A liquid fabric softener composition having the composition shown in Table 1 below was prepared. In Table 1, the unit of the numerical value for each component is % by mass relative to the total mass of the liquid fabric softener composition. In Table 1, "A / C" indicates the mass ratio of component (A) to component (C). In Table 1, "C / D" indicates the mass ratio of component (C) to component (D).

[0078] A liquid softener composition 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), (B), (D), and free fragrance were mixed and stirred to obtain an oil phase mixture. Meanwhile, the preservative was dissolved in ion-exchanged water for balancing to obtain an aqueous phase mixture. Here, the mass of the ion-exchanged water for balancing corresponds to the remainder after subtracting the total amount of the oil phase mixture, preservative, component (C), encapsulated fragrance, and viscosity modifier from 980g. Next, the oil phase mixture, heated above the melting point of component (A), was placed in a glass container and stirred. The aqueous phase mixture, also heated above the melting point of component (A), was added in two portions and stirred. The ratio of the aqueous phase mixture was 20:80 (by mass), and stirring was performed at a rotation speed of 1,000 rpm for 3 minutes after the first addition of the aqueous phase mixture and for 2 minutes after the second addition. Component (C), encapsulated fragrance, and viscosity modifier were added to the resulting emulsion. 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 to 3. Finally, deionized water was added to bring the total mass to 1,000 g to obtain the desired liquid softener composition.

[0079] [Inhibiting fading in textile products] For evaluation purposes, we used a cotton shirt (made of cotton) and blended jeans (a blend of cotton and synthetic fibers). The evaluation fabric was washed for 10 minutes using a targot meter (product name: MS-8220; manufacturer: Ueshima Seisakusho Co., Ltd.) with commercially available detergent "Top Platinum Clear" (manufactured by Lion Corporation) (usage amount: standard amount; bath ratio 20 times; using 40°C tap water). A first rinse (3 minutes) was performed, followed by a second rinse during which a liquid fabric softener composition was applied for 3 minutes (7 mL of liquid fabric softener composition per 1 kg of evaluation fabric; bath ratio 20 times; using 40°C tap water). After the softening treatment, the evaluation fabric was dewatered and air-dried indoors (25°C; 100% RH). This washing process was repeated 5 times. Using a spectrophotometer (product name: SE7700; manufacturer: Nippon Denshoku Industries Co., Ltd.), the lightness (L) of the evaluated fabric was measured before washing (initial) and after 5 washes. * ) and chromaticity (a * , b * ) Measure the color difference: The JPEG2026103939000011.jpg9170 image was obtained. The color difference is the difference from the reference cloth (white cloth). For example, "ΔL * (Initial) is "L of the initial evaluation cloth * Value - L of the reference cloth (white cloth) * It is a value. The calculated color difference was applied to the following formula to calculate ΔE. JPEG2026103939000012.jpg20170 ΔE was also calculated for the evaluation fabric (control) that underwent the same five washing cycles as described above, except that no softening treatment using a liquid fabric softener composition was performed. The effectiveness of liquid fabric softener compositions in preventing fading of textile products was evaluated according to the following criteria. The results are shown in the "Fading Prevention" column of Table 1. ○ and △ were considered acceptable. <Evaluation criteria applied to the evaluation fabric (cotton)> ×: The difference from the control ΔE is less than -0.08. △: Difference from the control ΔE is between -0.08 and -0.1. ○: The difference from the control ΔE is -0.1 or greater. <Evaluation criteria applied to the evaluated fabric (blended fabric)> ×: The difference from the control ΔE is less than -0.08. Δ: Difference from the control ΔE is between -0.08 and -0.1. ○: The difference from the control ΔE is -0.1 or greater.

[0080] [Storage stability of liquid fabric softener compositions] 80 mL of the liquid fabric softener composition was placed in a glass container (PS-No. 11, manufactured by Tanuma Glass Industry Co., Ltd.) and sealed tightly to serve as the evaluation sample. The evaluation sample was stored at 25°C for 24 hours. The liquid state of the liquid fabric softener composition after storage was visually evaluated according to the evaluation criteria below. The results are shown in the "Storage Stability" column of Table 1. ○, ◎, and ◎◎ were considered acceptable. <Evaluation Criteria> ×: The thickness of the separated phase is 5 cm or more. ○: The thickness of the separated phase is 3 cm or more but less than 5 cm. ◎: The thickness of the separated phase is 1 cm or more but less than 3 cm. ◎◎: Separated phase thickness is less than 1 cm [Industrial applicability]

[0081] This invention is applicable to the field of liquid fabric softeners.

[0082] [Table 1]

Claims

1. A liquid fabric softener composition, The following components (A) to (C): (A) 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 compounds thereof; (B) Nonionic surfactants; and, (C) A polymer obtained by polymerizing monomer (C-1) and monomer (C-2) below: (C-1) Methacrylamidopropyltrimethylammonium chloride (C-2) One or more selected from the group consisting of acrylic acid and methacrylic acid A liquid fabric softener composition containing the following:

2. The liquid softener composition according to claim 1, wherein component (C) is a polymer obtained by polymerizing monomer (C-1), monomer (C-2), and nonionic monomer (C-3).

3. The liquid softener composition according to claim 2, wherein the nonionic monomer (C-3) is at least one selected from the group consisting of acrylamide, methyl acrylate, and methyl methacrylate.

4. The liquid softener composition according to claim 1, wherein the mass ratio (A / C) of component (A) to component (C) is 2 to 75.

5. Furthermore, component (D) below: (D) Nonionic polymer having a urethane backbone A liquid softener composition according to claim 1, comprising:

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