Liquid fiber treating agent composition

Abstract

To provide a liquid fiber treating agent composition having superior deodorizing ability against half-dry odors.SOLUTION: A liquid fiber treating agent composition comprises the following components (A) to (C): (A) a cationic compound; (B) a nuclease enzyme; and (C) a nonionic surfactant in an amount of 1 mass% or more.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a liquid fiber treatment composition. Specifically, it relates to a liquid fiber treatment composition excellent in deodorizing performance against the smell of dry laundry, for example, a liquid softener composition.

Background Art

[0002] Microorganisms present in fibers use dirt such as human-derived lipids and proteins as food, grow and metabolize under optimal conditions such as temperature and humidity, and generate the smell of dry laundry. In addition, by producing extracellular substances such as extracellular polysaccharides and extracellular DNA, sticky dirt, that is, biofilms, are formed. When the use period of clothing is prolonged and the biofilm matures, problems such as reduced effectiveness of antibacterial agents and accelerated adhesion of particulate dirt may occur. Furthermore, a liquid fiber treatment composition containing a cationic compound makes it easy to fix hydrophobic dirt such as lipids by hydrophobically processing the fiber surface (especially cotton fiber), and when there is an excessive amount of dirt in the washing liquid, the dirt adheres to the fiber together with the cationic compound (recontamination), etc. are known. The coexistence of biofilms and dirt activates the metabolism of microorganisms and worsens the smell of dry laundry. It is known to utilize enzymes to prevent dirt adhesion. Conventional techniques include a liquid fabric softener for clothing (Patent Document 1) formulated with a quaternary ammonium ester compound and a specific nuclease enzyme as a dirt-weakening enzyme, and a washing method (Patent Documents 2 and 3) that increases nuclease adhesion by hydrophobizing the fiber surface with a softener.

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] An object of the present invention is to provide a liquid fiber treatment agent composition having excellent deodorizing properties against musty odors.

Means for Solving the Problems

[0005] The present invention enables improvement of the deodorizing effect of musty odors by blending a nuclease enzyme and a nonionic surfactant into a liquid fiber treatment agent composition containing a cationic compound, thereby suppressing biofilm removal and formation by the nuclease enzyme and imparting antifouling properties by the nonionic surfactant. The present invention relates to, for example, the following [1] to [6]. 〔1〕The following components (A) to (C): (A) Cationic compound (B) Nuclease enzyme (C) Nonionic surfactant 1% by mass or more A liquid fiber treatment agent composition containing the same. 〔2〕The liquid fiber treatment agent composition according to the above [1], wherein the component (A) is at least one compound selected from the group consisting of an amine compound having 1 to 3 hydrocarbon groups having 10 to 26 carbon atoms in the molecule, which may be interrupted by an ester group (-COO-) and / or an amide group (-NHCO-), a salt thereof, and a quaternized product thereof. 〔3〕The liquid fiber treatment agent composition according to the above [1], wherein the component (A) is a cationic polymer compound. 〔4〕The liquid fiber treatment agent composition according to any one of the above [1] to [3], wherein the component (C) is a compound represented by the following general formula (C1) derived from a higher alcohol having 10 or more carbon atoms or a higher fatty acid. R 1 -T-(C2H4O) r -H (C1) In formula (C1), R 1 is an alkyl group or alkenyl group having 10 to 22 carbon atoms, T is -O- or -CO-, r represents the average number of moles of EO added, and is 1 to 100. 〔5〕The liquid fiber treatment agent composition according to any one of 〔1〕 to 〔4〕 above, further containing a silicone compound. 〔6〕The liquid fiber treatment agent composition according to any one of 〔1〕 to 〔5〕 above, which is a liquid softening agent composition.

Advantages of the Invention

[0006] According to one aspect of the present invention, the liquid fiber treatment agent composition is excellent in the deodorizing effect of the fresh smell.

Embodiments for Carrying Out the Invention

[0007] [Component (A)] In the liquid fiber treatment agent composition of the present invention, the component (A) is a cationic compound and is blended to assist the adsorption of an enzyme to the biofilm stain of the fiber. The component (A) is preferably at least one selected from the group consisting of a component (A-1): an amine compound or a quaternary ammonium compound and a component (A-2): a cationic polymer compound.

[0008] <Component (A-1)> The component (A-1) is at least one compound selected from the group consisting of an amine compound having 1 to 3 hydrocarbon groups having 10 to 26 carbon atoms which may be interrupted by an ester group (-COO-) and / or an amide group (-NHCO-) in the molecule, a salt thereof, and a quaternized product thereof, and is a cationic surfactant.

[0009] The number of carbon atoms of the hydrocarbon group having 10 to 26 carbon atoms (hereinafter sometimes referred to as "long-chain hydrocarbon group" in the present specification) is 10 to 26, preferably 17 to 26, and more preferably 19 to 24. When the number of carbon atoms is 10 or more, the flexibility is good, and when it is 26 or less, the handleability is good. The long-chain hydrocarbon group may be saturated or unsaturated. When the long-chain hydrocarbon group is unsaturated, the position of the double bond may be anywhere, but when there is one double bond, the position of the double bond is preferably at the center or around the center of the long-chain hydrocarbon group. The long-chain hydrocarbon group may be a chain hydrocarbon group or a hydrocarbon group containing a ring in its structure, and is preferably a chain hydrocarbon group. The chain hydrocarbon group may be either linear or branched. As the chain hydrocarbon group, an alkyl group or an alkenyl group is preferable, and an alkyl group is more preferable.

[0010] The long-chain hydrocarbon group may be interrupted by an ester group (-COO-) and / or an amide group (-NHCO-). That is, the long-chain hydrocarbon group may have at least one interrupting group selected from the group consisting of an ester group and an amide group in its carbon chain, and the carbon chain may be interrupted by the interrupting group. Having such an interrupting group is preferable from the viewpoint of improving biodegradability and the like. When having the interrupting group, the number of interrupting groups possessed by one long-chain hydrocarbon group may be one or two or more. That is, the long-chain hydrocarbon group may be interrupted at one position by the interrupting group, or may be interrupted at two or more positions. When having two or more interrupting groups, each interrupting group may be the same or different. In addition, when having an interrupting group in the carbon chain, the carbon atoms of the interrupting group shall be counted as part of the carbon number of the long-chain hydrocarbon group. The long-chain hydrocarbon group is usually introduced by using industrially used tallow-derived unhydrogenated fatty acids, fatty acids obtained by hydrogenating or partially hydrogenating the unsaturated part, unhydrogenated fatty acids or fatty acid esters derived from plants such as palm coconut and oil coconut, or fatty acids or fatty acid esters obtained by hydrogenating or partially hydrogenating the unsaturated part. As the amine compound which is the component (A-1), a secondary amine compound or a tertiary amine compound is preferable, and a tertiary amine compound is more preferable.

[0011] More specifically, examples of the amine compound which is the component (A-1) include compounds represented by the following general formula (A1).

Chemical formula

[0012] In the general formula (A1), the hydrocarbon group having 10 to 26 carbon atoms in R 1 ~R 3 preferably has 17 to 26 carbon atoms, more preferably 19 to 24 carbon atoms. The hydrocarbon group may be saturated or unsaturated. The hydrocarbon group is preferably an alkyl group or an alkenyl group. -CH2CH(Y)OCOR 4 In, Y is a hydrogen atom or CH3, and a hydrogen atom is particularly preferred. R 4 is a hydrocarbon group having 7 to 21 carbon atoms, 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.

[0013] The hydrocarbon group of R 4 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), and the fatty acid (R 4 from which R 4(COOH) may be either a saturated fatty acid or an unsaturated fatty acid, and may be either a straight-chain fatty acid or a branched fatty acid. Among them, saturated or unsaturated straight-chain fatty acids are preferred. In order to impart good water absorbency to the soft-treated clothing, R 4 The saturation / unsaturation ratio (mass ratio) of the fatty acid serving as the base of is preferably 90 / 10 to 0 / 100, more preferably 80 / 20 to 0 / 100. R 4 When R is an unsaturated fatty acid residue, there are cis and trans isomers, and the mass ratio of the cis isomer / trans isomer is preferably 40 / 60 to 100 / 0, particularly preferably 70 / 30 to 90 / 10.

[0014] R 4 Specific examples of the fatty acid serving as the base of R include stearic acid, palmitic acid, myristic acid, lauric acid, oleic acid, elaidic acid, linoleic acid, partially hydrogenated palm oil fatty acid (iodine value 10 to 60), partially hydrogenated beef tallow fatty acid (iodine value 10 to 60), and the like. Among them, it is preferable to use a fatty acid composition adjusted by combining two or more 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 acid / unsaturated fatty acid is 90 / 10 to 0 / 100, more preferably 80 / 20 to 0 / 100. (b) The ratio (mass ratio) of cis isomer / trans isomer is 40 / 60 to 100 / 0, more preferably 70 / 30 to 90 / 10. (c) The fatty acid having 18 carbon atoms is 60% by mass or more, preferably 80% by mass or more, the fatty acid having 20 carbon atoms is less than 2% by mass, and the fatty acids having 21 to 22 carbon atoms are less than 1% by mass.

[0015] -(CH2) n NHCOR 5 In, n is 2 or 3, and 3 is particularly preferred. R 5 is a hydrocarbon group having 7 to 21 carbon atoms, preferably 15 to 19 carbon atoms. When there are a plurality of R's in the compound represented by the general formula (A1), the plurality of R's 5 may be the same as each other or may be different from each other. R 5 ​5 Examples thereof include R 4 similar ones.

[0016] R 1 ~R 3 Among them, at least one is a long-chain hydrocarbon group (a hydrocarbon group having 10 to 26 carbon atoms, -CH2CH(Y)OCOR 4 , or -(CH2) n NHCOR 5 ), and it is preferable that two of them are long-chain hydrocarbon groups. Among R 1 ~R 3 , when one or two of them are long-chain hydrocarbon groups, the remaining two or one are a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, -CH2CH(Y)OH, or -(CH2) n NH2, and it is preferable that they are an alkyl group having 1 to 4 carbon atoms, -CH2CH(Y)OH, or -(CH2) n NH2. Among these, as the alkyl group having 1 to 4 carbon atoms, a methyl group or an ethyl group is preferable, and a methyl group is particularly preferable. Y in -CH2CH(Y)OH is the same as Y in -CH2CH(Y)OCOR 4 . n in -(CH2) n NH2 is the same as n in -(CH2) n NHCOR 5 .

[0017] Preferable examples of the compound represented by the general formula (A1) include compounds represented by the following general formulas (A1-1) to (A1-8).

Chemical formula

[0018] R 7 and R 8 As the hydrocarbon group in, the above-mentioned R 1 ~R 3Examples of the hydrocarbon group having 10 to 26 carbon atoms are the same as those described above. R 9 , R 10 Examples of the hydrocarbon group having 7 to 21 carbon atoms in R 4 are the same as those of the hydrocarbon group having 7 to 21 carbon atoms in the above R 9 . When there are a plurality of Rs 9 in the formula, the plurality of Rs

[0019] The component (A-1) may be a salt or a quaternized product of an amine compound. The salt of the amine compound is obtained by neutralizing the amine compound with an acid. The acid used for neutralizing the amine compound may be an organic acid or an inorganic acid, and examples thereof include hydrochloric acid, sulfuric acid, and methyl sulfuric acid. The neutralization of the amine compound can be carried out by a known method. The quaternized product of the amine compound is obtained by reacting the amine compound with a quaternizing agent. Examples of the quaternizing agent used for quaternizing the amine compound include alkyl halides such as methyl chloride and dialkyl sulfates such as dimethyl sulfate. When these quaternizing agents are reacted with the amine compound, an alkyl group of the quaternizing agent is introduced into the nitrogen atom of the amine compound, and a salt of a quaternary ammonium ion and a halogen ion or a 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. The quaternization of the amine compound can be carried out by a known method.

[0020] As the component (A-1), at least one selected from the group consisting of the compound represented by the general formula (A1), its salt, and its quaternized product is preferable, and at least one selected from the group consisting of the general formulas (A1-1) to (A1-8), its salt, and its quaternized product is more preferable, and (A1-4) to (A1-6) (in each formula, R 9 is an alkyl group and an alkenyl group having 15 to 17 carbon atoms), at least one selected from the group consisting of its salt and its quaternized product is particularly preferable.

[0021] For the compound represented by the general formula (A1), its salt, and its quaternary compound, commercially available ones may be used, or those produced by known methods may be used. For example, the compound represented by the general formula (A1-2) (hereinafter referred to as "compound (A1-2)") and the compound represented by the general formula (A1-3) (hereinafter referred to as "compound (A1-3)") can be synthesized by a condensation reaction of the above fatty acid composition or a fatty acid methyl ester composition in which the fatty acids in the fatty acid composition are replaced with methyl esters of the fatty acids and methyldiethanolamine. At this time, from the viewpoint of improving flexibility, it is preferable to synthesize such that the abundance ratio represented by "compound (A1-2) / compound (A1-3)" is 99 / 1 to 50 / 50 by mass ratio. Furthermore, when using its quaternary compound, it is more preferable to use dimethyl sulfate as the quaternizing agent. At this time, from the viewpoint of flexibility, it is preferable to synthesize such that the abundance ratio represented by "quaternary compound of compound (A1-2) / quaternary compound of compound (A1-3)" is 99 / 1 to 50 / 50 by mass ratio.

[0022] The compound represented by the general formula (A1-4) (hereinafter referred to as "compound (A1-4)"), the compound represented by the general formula (A1-5) (hereinafter referred to as "compound (A1-5)"), and the compound represented by the general formula (A1-6) (hereinafter referred to as "compound (A1-6)") can be synthesized by a condensation reaction of the above fatty acid composition or fatty acid methyl ester composition and triethanolamine. At this time, from the viewpoint of flexibility, the content ratio of each component to the total mass of compounds (A1-4), (A1-5), and (A1-6) is preferably that compound (A1-4) is 1 to 60% by mass, compound (A1-5) is 5 to 98% by mass, and compound (A1-6) is 0.1 to 40% by mass, and more preferably that compound (A1-4) is 30 to 60% by mass, compound (A1-5) is 10 to 55% by mass, and compound (A1-6) is 5 to 35% by mass. Also, when using the quaternized product, it is more preferable to use dimethyl sulfate as the quaternizing agent in terms of allowing the quaternization reaction to proceed sufficiently. From the perspective of flexibility, the mass ratio of the quaternized products of compounds (A1-4), (A1-5), and (A1-6) is preferably such that the quaternized product of compound (A1-4) is 1 to 60% by mass, the quaternized product of compound (A1-5) is 5 to 98% by mass, and the quaternized product of compound (A1-6) is 0.1 to 40% by mass. More preferably, the quaternized product of compound (A1-4) is 30 to 60% by mass, the quaternized product of compound (A1-5) is 10 to 55% by mass, and the quaternized product of compound (A1-6) is 5 to 35% by mass. Further, when quaternizing compounds (A1-4), (A1-5), and (A1-6), generally, ester amines that have not been quaternized remain after the quaternization reaction. At that time, the ratio of "quaternized product / unquaternized ester amine" is preferably within the range of a mass ratio of 70 / 30 to 99 / 1.

[0023] The compound represented by the general formula (A1-7) (hereinafter referred to as "compound (A1-7)") and the compound represented by the general formula (A1-8) (hereinafter referred to as "compound (A1-8)") can be synthesized by a condensation reaction with N-(2-hydroxyethyl)-N-methyl-1,3-propanediamine synthesized by a known method described in J. Org. Chem., 26, 3409 (1960) from the above fatty acid composition, N-methylethanolamine, and an adduct of acrylonitrile. At that time, it is preferable to synthesize such that the mass ratio of the existence ratio represented by "compound (A1-7) / compound (A1-8)" is 99 / 1 to 50 / 50. Also, when using the quaternized product thereof, it is preferable to use methyl chloride as the quaternizing agent, and it is preferable to synthesize such that the mass ratio of the existence ratio represented by "quaternized product of compound (A1-7) / quaternized product of compound (A1-8)" is 99 / 1 to 50 / 50.

[0024] The component (A-1) is a known substance and is easily available on the market or can be prepared. The component (A-1) may be used alone or in combination of multiple types. When only the enzyme is added to the washing liquid to treat the fiber, the enzyme will be washed away in the washing liquid, and it is difficult for the enzyme to act on the biofilm on the fiber. When the component (A-1) adsorbs to the fiber and the hydrophobic parts are arranged, due to hydrophobic interaction, the enzyme can be efficiently adsorbed to and act on the biofilm on the fiber. (A-1) component's blending amount is not particularly limited as long as it can achieve the blending purpose, but it is preferably 5 to 20% by mass, more preferably 10 to 20% by mass, still more preferably 10 to 15% by mass, based on the total mass of the liquid fiber treatment agent composition. When the blending amount of the component (A-1) is 5% by mass or more, sufficient adsorption of the enzyme is possible. When the blending amount of the component (A-1) is 20% by mass or less, there is a tendency for weak adhesion (recontamination) of dirt to the fiber.

[0025] <(A-2) component> (A-2) component is a cationic polymer compound. When 1 g of the component (A-2) is added to 100 g of water at 25 °C, the liquid is clear without turbidity (i.e., water-soluble). As the cationic water-soluble polymer compound of the component (A-2), those having cationicity when dissolved in water can be used. In particular, as the component (A-2), a water-soluble polymer compound having one or more cationic groups selected from amino groups, amine groups, and quaternary ammonium groups is preferred. (A-2) component's cationic polymer compound preferably has a cationization degree of 0.1% or more, for example, it is preferably 0.1 to 35, particularly preferably 1.5% or more, for example, it is preferably 2.0 to 15. By satisfying such conditions for the cationization degree, the effect of adsorbing the coexisting silicone compound to the fiber can be made excellent, and cases where a large amount of blending is required and it is not economical can be prevented.

[0026] Here, the degree of cationization is defined as follows: for a polymer compound that is a polymer of a cationic monomer, a copolymer of a cationic monomer and a nonionic monomer, or a modified or substituted product of a nonionic polymer with a cationic group (such as cationized cellulose), it is calculated by the following formula (1). For a polymer compound that is a copolymer of a cationic monomer and an anionic monomer, or a copolymer of a cationic monomer, an anionic monomer, and a nonionic monomer, it is calculated by the following formula (2). Degree of cationization (%) = X × Y × 100 ··· Formula (1) [X: Atomic weight of the cationized atom (such as nitrogen) in the cationic group of the polymer compound Y: Number of moles of cationic groups contained in 1 g of the polymer compound] Degree of cationization (%) = X × (Y - Z) × 100 ··· Formula (2) [X: Atomic weight of the cationized atom (such as nitrogen) in the cationic group of the polymer compound Y: Number of moles of cationic groups contained in 1 g of the polymer compound Z: Number of moles of anionic groups contained in 1 g of the polymer compound (The anionic groups of Z include carboxyl groups, sulfonic acid groups, etc. contained in the monomer units in the polymer chain. Specifically, it is carboxylic acid in acrylic acid, etc. However, it does not include the counterions of the cationic groups.)]

[0027] As an example of calculating the degree of cationization, the case of MERQUAT 280 (manufactured by Lubrizol Japan) represented by the following formula (A2) is shown. X: 14 (Atomic weight of nitrogen atom) Y: 4.95×10 -3 (Weight of cationic groups in 1 g: calculated from 0.8 g and the molecular weight of cationic groups) Z: 2.78×10 -3 (Weight of anionic groups in 1 g: calculated from 0.2 g and the molecular weight of anionic groups) From formula (2), Degree of cationization (%) = 14 × (4.95×10 -3 - 2.78×10 -3)×100 = 3.0 is.

[0028] [Chemical formula]

[0029] m:n = 65:35 Mass ratio of dimethyldiallylammonium chloride to acrylic acid = 80:20 Therefore, according to the method for calculating the degree of cationization described above, the degree of cationization of a polymer of a nonionic monomer or a polymer of an anionic monomer becomes 0.

[0030] The cationic polymer of the component (A-2) preferably has a weight average molecular weight measured by gel permeation chromatography using polyethylene glycol as a standard substance of 1,000 to 5,000,000, more preferably 3,000 to 1,000,000, and still more preferably 5,000 to 500,000. Thereby, odor can be prevented well, and an increase in viscosity can be suppressed to make the usability excellent. Examples of the component (A-2) include polymers of dimethyldiallylammonium chloride such as Noverite 310 (manufactured by Nippon Lubrizol Corporation), MERQUAT 100 (manufactured by Nippon Lubrizol Corporation), Adeka Cation Ace PD-50 (manufactured by Asahi Denka Kogyo Co., Ltd.), Daidol EC-004, Daidol HEC, and Daidol EC (manufactured by Daito Kasei Kogyo Co., Ltd.); copolymers of dimethyldiallylammonium chloride and acrylamide such as MERQUAT 550 JL5 (manufactured by Nippon Lubrizol Corporation) and MERQUAT 295 (manufactured by Nippon Lubrizol Corporation); copolymers of dimethyldiallylammonium chloride and acrylic acid such as MERQUAT 280 (manufactured by Nippon Lubrizol Corporation); cationized cellulose such as Leo Guard KGP (manufactured by Lion Corporation); copolymers of imidazolinium chloride and vinylpyrrolidone such as LUVIQUAT-FC905 (manufactured by BASF); polyethyleneimine such as LUGALVAN-G15000 (manufactured by BASF); cationized polyvinyl alcohol such as Poval CM318 (manufactured by Kuraray Co., Ltd.); natural polymer derivatives having an amino group such as chitosan; copolymers of vinyl monomers having a hydrophilic group to which diethylamino methacrylate, ethylene oxide, etc. are added, etc. However, any polymer compound having cationicity when dissolved in water may be used, and the present example is not limited thereto. Among these, from the viewpoint of not disturbing the texture such as the flexibility imparted by silicone, those having low rigidity imparted to the fiber when adsorbed alone with the component (A-2) are preferred. Polymers of dimethyldiallylammonium chloride, copolymers of imidazolinium chloride and vinylpyrrolidone, and cationized cellulose are preferred. Particularly preferred polymers are cationic polymers obtained by polymerizing dimethyldiallylammonium salts represented by the following general formula (A3). The structure of this polymer is usually represented by the following general formula (A4) or the following general formula (A5). Further, the structural unit of the general formula (A4) and the structural unit of the general formula (A5) may be included together.

[0031]

Chemical formula

[0032]

Chem.

[0033]

Chem.

[0034] In the formula, c and d are each the average degree of polymerization, and are preferably in the range of 6 to 30000, more preferably in the range of 20 to 6000, and still more preferably in the range of 30 to 3000, respectively.) Examples of such polymers include Noverite 310 (manufactured by Lubrizol Japan), MERQUAT 100 (manufactured by Lubrizol Japan), Adeka Cation Ace PD-50 (manufactured by Asahi Denka Co., Ltd.), Daidol EC-004, Daidol HEC, Daidol EC (manufactured by Daito Kasei Kogyo Co., Ltd.), and the like.) As the component (A-2), the above cationic polymer compound may be used alone or as a mixture.)

[0035] The blending amount of the component (A-2) is not particularly limited as long as it can achieve the blending purpose, but is preferably 0.1 to 10% by mass, more preferably 0.5 to 10% by mass, and still more preferably 1.0 to 4.0% by mass based on the total mass of the liquid fiber treatment agent composition. When the blending amount of the component (A-2) is 0.1% by mass or more, sufficient adsorption of the enzyme is possible. When the blending amount of the component (A-2) is 10% by mass or less, there is a tendency that the adhesion of dirt (recontamination) to the fiber is weak.)

[0036] (A) As a component, a cationic compound may be used for the purpose of imparting antibacterial properties to textile products, and it is advisable to further add such antibacterial agents. For example, cationic bactericides such as quaternary ammonium salts (alkylammonium chloride, benzalkonium chloride), and polyhexamethylene biguanide hydrochloride can be mentioned. The content of such antibacterial agents is preferably 0.001 to 10% by mass, more preferably 0.01 to 1% by mass, based on the total mass of the liquid fiber treatment agent composition.

[0037] [Component (B)] In the liquid fiber treatment agent composition of the present invention, component (B) is a nuclease and is formulated for biofilm removal and formation inhibition. A nuclease enzyme is an enzyme that can cleave the phosphodiester bond between nucleotide subunits of nucleic acids. The nuclease enzyme in this specification is preferably a deoxyribonuclease or ribonuclease enzyme or a functional fragment thereof, or a mixture thereof. A functional fragment or portion means a portion of the nuclease enzyme that catalyzes the cleavage of the phosphodiester bond in the DNA backbone, and thus is a region of the nuclease protein that retains catalytic activity. Functional fragments or portions include truncated but functional versions of the enzyme and / or variants and / or derivatives and / or homologs whose function is maintained.

[0038] (B) Component is a known substance and is easily available on the market. (B) Component may be used alone or in combination of multiple types. (B) The amount of the component is not particularly limited as long as the blending purpose can be achieved. However, as the amount of the enzyme preparation, it is preferably 0.01 to 5% by mass, more preferably 0.1 to 5% by mass, and even more preferably 1 to 3% by mass, based on the total mass of the liquid fiber treatment agent composition. When the amount of component (B) is 0.01% by mass or more, it is effective for biofilm removal and formation inhibition. When the amount of component (B) is 5% by mass or less, it is easy to ensure storage stability. In addition, as the enzyme activity value, the nuclease activity (DEP-AB / g) per 1 g of the fiber treatment composition is preferably 0.3 to 200, more preferably 3 to 180, and even more preferably 35 to 110.

[0039] [Component (C)] In the liquid fiber treatment composition of the present invention, component (C) is a nonionic surfactant, and is formulated for surface hydrophilization modification of fibers by adsorption to fibers and detergency of dirt in a washing liquid (fiber treatment liquid such as a softener treatment liquid). As component (C), components known in the field of liquid fiber treatment agents can be used without particular limitation. For example, those derived from polyhydric alcohols, higher alcohols, higher amines or higher fatty acids can be used. Preferred examples of component (C) include compounds represented by the following general formula (C1) derived from higher alcohols having 10 or more carbon atoms or higher fatty acids. R 1 -T-(C2H4O) r -H (C1) In formula (C1), R 1 represents an alkyl group or alkenyl group having 10 to 22 carbon atoms, T represents -O- or -CO-, r represents the average number of moles of EO added, and is 1 to 100. In formula (C1), R 1 is an alkyl group or alkenyl group having 10 to 22 carbon atoms, which may be linear or branched. When the carbon chain has a low number of carbon atoms, it is hydrophilic and will be washed away in a washing liquid (fiber treatment liquid such as a softener treatment liquid). Therefore, having a certain number of carbon atoms in the carbon chain tends to make it easy to adsorb to fibers. In formula (C1), r is the average number of moles of EO added. For example, it is 1 to 100, preferably 20 to 100, more preferably 40 to 100. When the component (C) is adsorbed on the fiber, the larger the number of moles of EO added, the more the fiber surface can be hydrophilically modified. Against hydrophobic stains such as lipids, it is possible to prevent the fixation of the stains attached during wearing or suppress the attachment (re-staining) of stains in the washing liquid (fiber treatment liquid such as softener treatment liquid). On the other hand, in order to directly act on the stains in the washing liquid (fiber treatment liquid such as softener treatment liquid) and wash them away without attaching the stains to the fiber, a more hydrophilic structure is desirable. Since the adsorption to the fiber and the detergency in the washing liquid (fiber treatment liquid such as softener treatment liquid) are a trade-off, with the carbon number and the average number of moles of EO added being as described, it is possible to achieve both the hydrophilic modification of the fiber surface by adsorption to the fiber and the detergency of the stains in the washing liquid (fiber treatment liquid such as softener treatment liquid), and the antifouling property of the fiber becomes better.

[0040] (C) component is a known substance and is easily available in the market or can be prepared. (C) component may be used alone or in combination of multiple types. The blending amount of the (C) component is 1% by mass or more, preferably 1 to 5% by mass, more preferably 2 to 5% by mass, still more preferably 2 to 4% by mass, based on the total mass of the liquid fiber treatment agent composition. When the blending amount of the (C) component is 1% by mass or more, it is possible to impart antifouling property. When the blending amount of the (C) component is 5% by mass or less, the effect can be exerted without hindering the adsorption of the (A) component to the fiber.

[0041] [(B) / (C) ratio] In the liquid fiber treatment agent composition of the present invention, the mass ratio (B) / (C) of the (B) component to the (C) component is not particularly limited, but for example, it is 0.01 to 2.0, preferably 0.1 to 2.0, more preferably 0.2 to 1.5. Since the generation of the musty smell can be suppressed as the adhesion of dirt is suppressed, the suppression of the musty smell becomes better as the blending amount of the component (C) increases. However, if the component (C) is too much, the component (A) will be washed away in the washing liquid due to the detergency of the component (C) and it will be difficult to adsorb to the fiber, which is inappropriate. Also, if the component (B) is too much, the effect will level off. In view of the above points, it is preferable that (B) / (C) is 0.01 to 2.0. Also, as the enzyme activity value, the nuclease activity (kDEP-AB / g) with respect to the component (C) is, for example, 0.08 to 6, preferably 0.1 to 5.5, more preferably 0.5 to 4.0.

[0042] [Optional component] In the liquid fiber treatment agent composition of the present invention, additives and the like usually used in ordinary fiber treatment agents can be blended as necessary within a range that does not interfere with the effects of the present invention.

[0043] <Water-soluble solvent> The water-soluble solvent can be blended to further improve the stability (particularly freeze-thaw recovery) of the liquid fiber treatment agent composition. As the water-soluble solvent, one or more selected from the group consisting of alcohols having 1 to 4 carbon atoms, glycol ether solvents, and polyhydric alcohols are preferable. Specifically, it is preferable to blend a solvent component selected from ethanol, isopropanol, glycerin, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, hexylene glycol, polyoxyethylene phenyl ether, and a water-soluble solvent represented by the following general formula (X). R 4 -O-(C2H4O) y -(C3H6O) Z -H ···(X) (In the formula, R 4 is an alkyl group or alkenyl group having 1 to 6 carbon atoms, preferably 2 to 4 carbon atoms, and y and z are each the average addition molar number, y is 1 to 10, preferably 2 to 5, and z is 0 to 5, preferably 0 to 2.) Among those mentioned above, ethanol, ethylene glycol, butyl carbitol, propylene glycol, dipropylene glycol monomethyl ether, and diethylene glycol monobutyl ether are preferable. A single type of water-soluble solvent may be used, or a plurality of types may be used in combination. The content of the water-soluble solvent is not particularly limited as long as the blending purpose can be achieved, but it is preferably 0.01 to 4% by mass, more preferably 0.01 to 3% by mass, and particularly preferably 0.1 to 3% by mass based on the total mass of the liquid fiber treatment agent composition.

[0044] <Functional Capsules> Functional capsules can be blended to impart various functions resulting from the core substance encapsulated therein to the liquid fiber treatment agent composition. Functional capsules are composed of a core substance and a wall substance that covers the core substance. As the core substance, those generally used as capsule encapsulation substances in the field of liquid fiber treatment agents can be used without particular limitation. Specific examples include fragrances, essential oils, brightening agents, insect repellents, silicones, waxes, flavoring agents, vitamins, skin care agents, enzymes, probiotics, dyes, pigments, fragrance precursors, cooling agents, warming agents, attractants such as pheromones, antibacterial agents, bleaching agents, flavoring agents, sweeteners, waxes, drugs, fertilizers, and herbicides. A single type of core substance may be used, or a plurality of types may be used in combination. As the wall substance, those generally used as encapsulation materials in the field of liquid fiber treatment agent compositions can be used without particular limitation. Specific examples include natural polymers such as gelatin and agar, oily film-forming substances such as oils and waxes, and synthetic polymer substances such as polyacrylic acid-based, polyvinyl-based, polymethacrylic acid-based, melamine-based, and urethane-based substances. One of them can be used alone or two or more of them can be used in appropriate combination.

[0045] Specific examples of encapsulated fragrances using a fragrance as the core substance include BLUEFLOWERPOP "FFMHN2814" manufactured by Firmenich; GREEN BREEZE CAPS, ORCHARD GARDEN CAPS, RAINBOW CAPS, VELVET CAPS, AURORACAPS, and COSMICCAPS manufactured by Givaudan; UNICAP101 and UNICAP503 manufactured by IFF, and the like. Specific examples of cooling capsules using a cooling agent as the core substance include MultiSal SalCool, Hydrosal FreshCool, and SalSphere SalCool manufactured by SALVONA Technologies; Neo Age AROMA-C manufactured by Nippon Kayaku Co., Ltd., and the like. Specific examples of warming capsules using a warming agent as the core substance include Riken Resin RMC-TO manufactured by Miki Riken Co., Ltd.; Hydrosal Heat manufactured by SALVONA Technologies, and the like. 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., and the like.

[0046] The average particle diameter of the functional capsules is preferably 10 to 30 μm. The functional capsules having the above particle diameter are excellent in adsorbability to clothing and can be stably dispersed in the liquid fiber treatment agent composition. A single type of functional capsule may be used, or a plurality of types may be used in combination. The content of the functional capsule is not particularly limited as long as the blending purpose can be achieved, but is preferably 0.0001 to 1% by mass based on the total mass of the liquid fiber treatment agent composition.

[0047] <Water> The liquid fiber treatment agent composition is preferably an aqueous composition containing water. As the water, tap water, ion-exchanged water, pure water, distilled water, etc. can be used. Among them, ion-exchanged water is preferable. The water content is not particularly limited, but is preferably 50% by mass or more, more preferably 60% by mass or more, based on the total mass of the liquid fiber treatment agent composition. When the content is 50% by mass or more, the handleability becomes better.

[0048] <Viscosity regulator> A viscosity regulator can be blended to further improve the usability of the liquid fiber treatment agent composition. Specific examples of the viscosity regulator include calcium chloride, magnesium chloride, sodium chloride, sodium p-toluenesulfonate, and sodium citrate. Among them, calcium chloride, magnesium chloride, and sodium citrate are preferred. The viscosity regulator may be used alone or in combination of multiple types. The content of the viscosity regulator is not particularly limited as long as the blending purpose can be achieved, but is preferably 0.001 to 0.5% by mass, more preferably 0.003 to 0.2% by mass, and still more preferably 0.005 to 0.1% by mass, based on the total mass of the liquid fiber treatment agent composition.

[0049] <Preservative> The preservative can be blended mainly to enhance the antiseptic power and bactericidal power of the liquid fiber treatment agent composition and maintain the preservability during long-term storage. As the preservative, components known in the field of liquid fiber treatment agents can be used without particular limitation. Specific examples include isothiazolone-based organic sulfur compounds, benzisothiazolone-based organic sulfur compounds, benzoic acids, 2-bromo-2-nitro-1,3-propanediol, and the like. Examples of isothiazolone-based organic sulfur 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-dichloro isothiazolone, 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, a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one is more preferred, and a mixture of about 77% by mass of the former and about 23% by mass of the latter and its dilutions (e.g., isothiazolone solution) are particularly preferred. Examples of benzisothiazolone-based organic sulfur compounds include 1,2-benzisothiazolin-3-one, 2-methyl-4,5-trimethylene-4-isothiazolin-3-one, dithio-2,2-bis(benzylmethylamide) as a related compound, and mixtures thereof. Among these, 1,2-benzisothiazolin-3-one is particularly preferred. Examples of benzoic acids include benzoic acid or its salts, para-hydroxybenzoic acid or its salts, methyl paraoxybenzoate, ethyl paraoxybenzoate, propyl paraoxybenzoate, butyl paraoxybenzoate, benzyl paraoxybenzoate, and the like. 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 blending purpose can be achieved, but it is preferably 0.0001 to 1% by mass based on the total mass of the liquid fiber treatment agent composition. When it is 0.0001% by mass or more, the blending effect of the preservative can be sufficiently obtained, and when it is 1% by mass or less, the high storage stability of the liquid fiber treatment agent composition can be sufficiently maintained.

[0050] <Antibacterial agent> An antibacterial agent can be blended to impart antibacterial properties to the fiber. Examples of antibacterial agents include diclosan, triclosan, bis-(2-pyridylthio-1-oxide) zinc, 8-oxyquinoline, and polylysine. These antibacterial agents may be used alone or in combination of two or more. The content of the antibacterial agent is preferably 0.001 to 10 mass %, more preferably 0.01 to 1 mass %, based on the total mass of the liquid fiber treatment composition.

[0051] <Non-encapsulated fragrances> The liquid fiber treatment composition of the present invention may contain a perfume to scent the composition. Lists of perfume materials that can be used can be found in various publications, such as "Perfume and Flavor Chemicals", Vol. I and II, Steffen Arctander, Allured Pub. Co. (1994); "Synthetic perfumes: Chemistry and product knowledge", Genichi Indo, Chemical Industry 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 Publishing Co. (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), each of which is incorporated herein by reference. The content of the fragrance is not particularly limited as long as it is an amount that can achieve the blending purpose, but is preferably 0.3 to 2 mass %, more preferably 0.5 to 1 mass %, based on the total mass of the liquid fiber treatment composition. If the content of the fragrance is 0.3 mass % or more, a higher blending effect can be obtained, and if it is 2 mass % or less, excellent separation stability can be obtained.

[0052] <Silicone compounds> The silicone compound is preferably used in combination when the (A) component is the (A-2) component. The silicone compound preferably has a viscosity of 10 to 100000000 mm 2 / s (B-type viscometer, 25 °C). When adsorbed on a textile product, it is not particularly limited as long as it can impart flexibility and smoothness. Generally, silicone polymer compounds used in textile treatment include dimethyl silicone, polyether-modified silicone, methylphenyl silicone, alkyl-modified silicone, higher fatty acid-modified silicone, methylhydrogen silicone, fluorine-modified silicone, epoxy-modified silicone, carboxy-modified silicone, carbinol-modified silicone, and amino-modified silicone, etc. One of these can be used alone or as a mixture of two or more. The molecular structure of this silicone polymer compound may be linear, branched or crosslinked. Also, the modified silicone polymer compound may be modified with one type of organic functional group or may be modified with two or more types of organic functional groups. The silicone compound can be used as an oil or as an emulsion dispersed by an arbitrary emulsifier. In order to prevent yellowing of the soft-treated textile product, it is preferably a silicone polymer compound that does not contain an amino group. Furthermore, from the viewpoint of enhancing the effect of adsorbing the silicone compound by the (A-2) component to the fiber and enhancing flexibility and smoothness, it is preferably nonionic, and dimethyl silicone, carbinol-modified silicone, epoxy-modified silicone, and polyether-modified silicone are more preferable, and dimethyl silicone and polyether-modified silicone are even more preferable.

[0053] Among these, as a particularly preferred silicone polymer compound, polyether-modified silicone can be mentioned from the viewpoints of imparting flexibility and making the liquid fiber treatment agent composition transparent or translucent, thereby enhancing the commercial value. In this specification, "transparent" means that when using a glass cell with an optical path length of 10 mm in the measurement cell and filling the reference cell with ion-exchanged water, 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%. Compared with dimethyl silicone having no polyether group, this silicone has less ximi feeling and good flexibility, and is suitable for obtaining a transparent liquid fiber treatment agent composition. Preferred polyether-modified silicones include copolymers of alkyl (carbon number 1 to 3) siloxane and polyoxyalkylene (preferably alkylene group with carbon number 2 to 5). Among these, copolymers of dimethylsiloxane and polyoxyalkylene (such as polyoxyethylene, polyoxypropylene, random or block copolymers of ethylene oxide and propylene oxide) are preferred. Examples of such compounds include those represented by the following general formula (I) or (II).

[0054] [Chemical formula] (In the formula, M, N, a and b are average degrees of polymerization, and R represents hydrogen or an alkyl group.) Here, M is 10 to 10000, preferably 50 to 1000, more preferably 100 to 300, N is 1 to 1000, preferably 5 to 300, more preferably 5 to 100, and it is preferable that M > N. a is 2 to 100, preferably 5 to 50, more preferably 5 to 20, and b is 0 to 50, preferably 0 to 10. As R, hydrogen or an alkyl group having 1 to 4 carbon atoms is preferred, and hydrogen is more preferred. The polyether-modified silicone represented by the general formula (I) can generally be produced by subjecting an organohydrogenpolysiloxane having an Si-H group and a polyoxyalkylene alkyl ether having a carbon-carbon double bond at the terminal, such as polyoxyalkylene allyl ether, to an addition reaction.

[0055] [Chemical formula] (In the formula, A, B, h, and i are average degrees of polymerization, R represents an alkyl group, and R’ represents hydrogen or an alkyl group.) Here, A is preferably from 5 to 10,000, B is preferably from 2 to 10,000, h is preferably from 2 to 100, and i is preferably from 0 to 50. As R, an alkyl group having 1 to 5 carbon atoms is preferred. As R’, hydrogen or an alkyl group having 1 to 4 carbon atoms is preferred. Further, the weight-average molecular weight of the block copolymer represented by the formula (II) is preferably from 15,000 to 100,000,000 from the viewpoints of flexibility and smoothness. The above linear polysiloxane-polyoxyalkylene block copolymer can be produced by reacting a polyoxyalkylene compound having a reactive terminal group with a dihydrocarbylsiloxane having a terminal group that reacts with the reactive terminal group of the compound.

[0056] Specific examples of the polyether-modified silicone oil that can be used in the present invention 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 FZ2222, 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 manufactured by Toray Dow Corning Co., Ltd.; KF352A, KF6008, KF615A, KF6016, KF6017 manufactured by Shin-Etsu Chemical Co., Ltd.; TSF4450, TSF4452 manufactured by GE Toshiba Silicones Co., Ltd., etc. These can be used alone or as a mixture of two or more. The blending amount of the silicone compound is not particularly limited as long as the blending purpose can be achieved, but it is preferably 0.5 to 5% by mass, more preferably 1 to 4% by mass, and still more preferably 1 to 3% by mass based on the total mass of the liquid fiber treatment composition. When the blending amount of the silicone compound is within the range of 0.5 to 5% by mass, it is possible to impart a better texture. Also, from the viewpoint of efficiently exerting the efficacy of component (B), it is preferable to use the silicone compound in combination with component (A-2). After component (A-2) adsorbs on the fiber and hydrophobizes the surface, the silicone compound adsorbs, further hydrophobizing the surface, and enabling component (B) to efficiently adsorb and act on the biofilm on the fiber by hydrophobic interaction.

[0057] <Antifoaming agent>In the present invention, in order to suppress foaming and improve the metering property of the liquid fiber treatment agent composition, it is preferable to contain an antifoaming agent. Examples of the antifoaming agent include silicone-based antifoaming agents, alcohol-based antifoaming agents, ester-based antifoaming agents, mineral oil-based antifoaming agents, vegetable oil-based antifoaming agents, and synthetic oil-based antifoaming agents. From the viewpoint of suppressing foaming during metering and improving the metering property, silicone-based or alcohol-based antifoaming agents are preferable. Examples of the silicone-based antifoaming agent used in the present invention include oil-type antifoaming agents, compound-type antifoaming agents, self-emulsifying-type antifoaming agents, emulsion-type antifoaming agents, powder-type antifoaming agents, and solid-type antifoaming agents. Among these, from the viewpoint of the effect of improving the metering property, self-emulsifying-type antifoaming agents and emulsion-type antifoaming agents are more preferable, and emulsion-type antifoaming agents are particularly preferable.Specific examples of the defoaming agent include ethanol manufactured by Nippon Synthetic Alcohol Co., Ltd., 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 of the FS Antifoam Series manufactured by Dow Corning Toray Co., Ltd., 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., Q2-3183A, BY28-503, SD5591, SH7PA, SH5503, SH5510, SM5513, SH5561, SH5507, BY22-517, SM5511, SM5512, SM5515, SM5517, SM5571, SM5572F, SM5573 manufactured by Dow Corning Toray Co., Ltd., YSA6406, TSA780, TSA7341, TSA7343, TSA739, TSA732, TSA732A, TSA772, TSA730, TSA770, TSA775, TSA776, YMA6509, TSA737, TSA737B, TSA737S, TSA737F, TSA737K manufactured by Momentive Performance Materials Japan LLC, etc.

[0058] [Viscosity of the Liquid Fiber Treatment Agent Composition] Since the thickening of the liquid fiber treatment agent composition according to the present invention is suppressed, it has a viscosity that makes its usability (particularly, the handling property when charging into the washing machine and the discharge efficiency from the charging port of the washing machine) good. Specifically, the viscosity (25 °C) is preferably less than 500 mPa·s, more preferably less than 300 mPa·s. The viscosity can be measured using a B-type viscometer (manufactured by TOKIMEC).

[0059] [Method for Producing Liquid Fiber Treatment Agent Composition] The liquid fiber treatment agent composition can be produced by a known method, for example, a method similar to the method for producing a conventional liquid fiber treatment agent composition using a cationic surfactant as the main agent. For example, an oil phase containing component (A), component (C), and a fragrance, and an aqueous phase are mixed under temperature conditions equal to or higher than the melting point of component (A) to prepare an emulsion, and component (B) and, if necessary, other components are added to and mixed with the obtained emulsion to produce the liquid fiber treatment agent composition. Component (C) may be added not only to the oil phase but also by divided addition by adding it to the emulsion. Alternatively, the liquid fiber treatment agent composition can be produced by a known method, for example, a method similar to the method for producing a liquid fiber treatment agent composition using a cationic polymer as the main agent. For example, an oil phase containing a silicone compound, a solvent, and a fragrance, and an aqueous phase containing component (A), component (B), and component (C) are mixed and stirred to produce the liquid fiber treatment agent composition.

[0060] [Method for Using Liquid Fiber Treatment Agent Composition] The method for treating a fiber product using the liquid fiber treatment agent composition is not particularly limited and can be used in the same manner as a conventional liquid fiber treatment agent. For example, the liquid fiber treatment agent composition is dissolved in the rinsing water at the rinsing stage of washing for treatment, or treatment is carried out by dissolving the liquid fiber treatment agent composition in water without washing, or the liquid fiber treatment agent composition is dissolved in water in a container such as a tub, and then the fiber product is put in and immersed for treatment. In all cases, it is diluted to an appropriate concentration for use, but the bath ratio (weight ratio of the treatment liquid to the fiber product) is preferably 3 to 100 times, particularly preferably 5 to 50 times. Specifically, it is used in an amount such that the concentration of component (A) is preferably 0.01 ppm to 1000 ppm, more preferably 0.1 ppm to 300 ppm, based on the total amount of water used. The types of fiber products that can be treated with the liquid fiber treatment agent composition are not particularly limited, and examples include clothing, curtains, sofas, carpets, towels, handkerchiefs, sheets, and pillowcases. The material may be natural fibers such as cotton, silk, and wool, or chemical fibers such as polyester.

Examples

[0061] Hereinafter, the present invention will be described in more detail with reference to examples, but the scope of the present invention is not limited thereto. In the examples, all component blending amounts are shown in mass% (except when specified, in terms of pure content).

[0062] [Component (A)] The following components A-1 to A-4 were used. · (A-1-1): A cationic surfactant synthesized according to the procedure described in Example 4 of JP-A-2003-12471 · (A-1-2): Trade name "Stepantex SE-88", manufactured by Stepan · (A-2-1): Trade name "NOVERITE310", polydimethyldiallylammonium chloride, manufactured by Nippon Lubrizol Corporation · (A-2-2): Trade name "MERQUAT550", polydimethyldiallylammonium chloride-acrylamide copolymer, manufactured by Nippon Lubrizol Corporation · (A-3): Trade name "Proxel IB", manufactured by Arch Chemicals Japan K.K. · (A-4): Trade name "Lipocarde 16-29L", manufactured by Lion Specialty Chemicals Co., Ltd.

[0063] [Component (B)] The following components B-1 to B-2 were used. · (B-1): Trade name "Pristine100L", manufactured by Novozymes A / S · (B-2) [Comparative example]: Trade name "Carezyme Premium 4500L", manufactured by Novozymes A / S

[0064] [Component (C)] The following C-1 to C-6 were used. · (C-1): Trade name "TAG-90" (polyoxyethylene isotridecyl ether EO 7 moles), manufactured by Lion Chemical Co., Ltd. Compound represented by the general formula (C1) (R 1 is an alkyl group having 13 carbon atoms, T is -O-, and r is 7). · (C-2): Trade name "XP-100-80" (polyoxyethylene alkyl ether, EO 10 moles), manufactured by Lion Chemical Co., Ltd. The compound represented by the general formula (C1) (R 1 is an alkyl group having 10 carbon atoms, T is -O-, and r is 10). · (C-3): Trade name "Nonion K-230" (polyoxyethylene lauryl ether, EO 30 moles), manufactured by NOF Corporation The compound represented by the general formula (C1) (R 1 is an alkyl group having 12 carbon atoms, T is -O-, and r is 30). · (C-4): Trade name "TA600-75" (polyoxyethylene isotridecyl ether, EO 60 moles), manufactured by Lion Chemical Co., Ltd. The compound represented by the general formula (C1) (R 1 is an alkyl group having 13 carbon atoms, T is -O-, and r is 60). · (C-5): Trade name "Nonion S-40" (PEG monostearate, EO 70 moles), manufactured by NOF Corporation The compound represented by the general formula (C1) (R 1 is an alkyl group having 18 carbon atoms, T is -CO-, and r is 70). · (C-6): Trade name "Nonion K-2100W" (polyoxyethylene lauryl ether, EO 100 moles), manufactured by NOF Corporation The compound represented by the general formula (C1) (R 1 is an alkyl group having 12 carbon atoms, T is -O-, and r is 100).

[0065] [Common components] (Common component E-1) · Preservative: Trade name "Nipacide BIT20", manufactured by Clariant Japan Ltd., 0.002% · Viscosity modifier: Trade name "granular calcium chloride", manufactured by Tokuyama Corporation, 0.01% · Unencapsulated fragrance: A fragrance containing fragrance components in the composition shown in Table 1 below, 1.0%

Table 1

[0066] (Common component E-2) · Silicone compound: Trade name "Polyether-modified silicone CF1188N", manufactured by Toray Dow Corning Co., Ltd., 2.0% · Water-soluble solvent: Trade name "Diethylene glycol monobutyl ether", manufactured by Lion Chemical Co., Ltd., 4.0% · Water-soluble solvent: Trade name "Solfit", manufactured by Kuraray Co., Ltd., 4.0% · Unencapsulated fragrance: Fragrance containing fragrance components with the composition shown in Table 1 above, 1.0% · Antifoaming agent: Trade name "KM-90", manufactured by Shin-Etsu Chemical Co., Ltd., 0.01%

[0067] [Preparation method of liquid fiber treatment agent composition] A liquid fiber treatment agent composition (specifically, a liquid softener composition) having the composition shown in the following table was prepared. In the table, the unit of the numerical value of each component is mass% based on the total mass of the liquid fiber treatment agent composition (liquid softener composition). "B / C" in the table indicates the mass ratio of component (B) to component (C). (A-1) component-based liquid softener composition was prepared by the following procedure using a glass container (inner diameter 100 mm, height 150 mm) and a stirrer (Agitator SJ type, manufactured by Shimadzu Corporation). First, the (A-1) component, (C) component, and fragrance were mixed and stirred to obtain an oil-phase mixture. On the other hand, the preservative was dissolved in ion-exchanged water for balance to obtain an aqueous-phase mixture. The mass of the ion-exchanged water for balance corresponded to the remainder obtained by subtracting the total amount of the oil-phase mixture, component (B), and common component (E-1) other than the preservative from 980 g. Next, the oil-phase mixture heated to a temperature equal to or higher than the melting point of the (A-1) component was placed in a glass container and stirred, and the aqueous-phase mixture heated to a temperature equal to or higher than the melting point of the (A-1) component was added in two portions, and then stirred. The splitting ratio of the aqueous-phase mixture was 30:70 (mass ratio), and stirring (rotation speed 1,000 rpm) was carried out for 3 minutes after the first addition of the aqueous-phase mixture and for 2 minutes after the second addition of the aqueous-phase mixture. Thereafter, component (B), common component (E-1) (excluding the preservative and fragrance), and (A-3) component were added to the obtained emulsion and stirred. Also, if necessary, an appropriate amount of hydrochloric acid (reagent 1 mol / L, Kanto Chemical) or sodium hydroxide (reagent 1 mol / L, Kanto Chemical) was added to adjust the pH, and further ion-exchanged water was added so that the total mass became 1,000 g to obtain the target softener composition (Examples 1 to 13, Comparative Examples 1 to 3). On the other hand, the (A-2) component-based liquid softener composition was prepared by the following procedure using a 1000 ml beaker and a stirring blade. First, the silicone compound, solvent, and fragrance were mixed and stirred to obtain an oil-phase mixture. On the other hand, the (A-2) component was dissolved in ion-exchanged water to obtain an aqueous-phase mixture. Next, while stirring the oil-phase mixture, the aqueous-phase mixture was added, and further component (B), component (C), common component (E-2) (excluding the silicone compound, solvent, and fragrance), and (A-4) component were added, and stirred thoroughly until uniform. Also, if necessary, an appropriate amount of hydrochloric acid (reagent 1 mol / L, Kanto Chemical) or sodium hydroxide (reagent 1 mol / L, Kanto Chemical) was added to adjust the pH, and further ion-exchanged water was added so that the total mass became 1,000 g to obtain the target softener composition (Examples 14 to 25, Comparative Examples 4 to 6).

[0068] [Evaluation Method for Liquid Softener Composition] Regarding the obtained liquid softener composition, the deodorizing effect on the musty smell was evaluated according to the following procedure. <Evaluation of the deodorizing effect on the musty smell> The effect of the liquid softener composition on deodorizing the musty smell of textile products was evaluated. In this evaluation, cotton towels with a musty smell, which were assumed to have been used at home for a long period (more than half a year) and had a firmly formed biofilm, were used as the evaluation fabrics. The evaluation fabrics were treated with the liquid softener composition for 3 minutes (standard usage amount, bath ratio 20 times, using tap water at 25°C) using a two-tank washing machine (CW-C30A1-H manufactured by Mitsubishi Electric) and a bucket-type mini washing machine, dehydrated for 1 minute, and then left to stand for 6 hours under room drying conditions (25°C, humidity 100%) using a constant temperature bath (TBR-2HA0PX, manufactured by ESPEC Corporation), and then dried overnight at room temperature. They were washed for 10 minutes with our company's base detergent (standard usage amount, bath ratio 20 times, tap water at 25°C), rinsed for 3 minutes, dehydrated for 1 minute, and then left to stand for 6 hours again under room drying conditions (25°C, humidity 100%). The odor of the towel after standing was sensory evaluated according to the following evaluation criteria, and the deodorizing effect of the liquid fiber treatment composition on textile products was determined by applying the following judgment criteria. The judgment results are shown in the "Deodorizing property" column of Tables 2 and 3 below. A judgment criterion of ○ or above was considered a pass.

[0069] <Evaluation criteria> 0 points: No musty smell at all 1 point: The musty smell can just be faintly perceived 2 points: The musty smell is faintly felt 3 points: The musty smell is felt somewhat strongly 4 points: The musty smell is strongly felt 5 points: The musty smell is felt intensely <Judgment criteria> ◎◎: Less than 1 point ◎: 1 point or more and less than 1.5 points ○: 1.5 points or more and less than 2 points ×: 2 points or more

[0070]

Table 2

[0071]

Table 3

Claims

1. The following components (A) to (C): (A) A cationic compound (B) A nuclease enzyme (C) A nonionic surfactant of 1% by mass or more A liquid fiber treatment agent composition containing the same.

2. The liquid fiber treatment agent composition according to claim 1, wherein the component (A) is at least one compound selected from the group consisting of an amine compound having 1 to 3 hydrocarbon groups having 10 to 26 carbon atoms in the molecule, which may be interrupted by an ester group (—COO—) and / or an amide group (—NHCO—), a salt thereof, and a quaternized product thereof.

3. The liquid fiber treatment agent composition according to claim 1, wherein the component (A) is a cationic polymer compound.

4. The liquid fiber treatment agent composition according to any one of claims 1 to 3, further containing a silicone compound.

5. The liquid fiber treatment agent composition according to any one of claims 1 to 3, which is a liquid softener composition.

6. The liquid fiber treatment agent composition according to claim 4, which is a liquid softener composition.

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