Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
  • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
  • D06M13/46—Compounds containing quaternary nitrogen atoms
  • D06M13/463—Compounds containing quaternary nitrogen atoms derived from monoamines
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
  • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
  • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
  • D06M23/12—Processes in which the treating agent is incorporated in microcapsules

Definitions

• the present invention relates to a liquid softener composition. Specifically, the present invention relates to a liquid softener composition having excellent dispersion stability of an encapsulated fragrance.
• a structural viscosity imparting agent may be blended in order to stably disperse the encapsulated fragrance.
• a technique for improving the dispersion stability of an encapsulated fragrance by blending a specific amine compound or a semi-polar surfactant is known (Japanese Patent Laid-Open No. 2015-034371).
• a technique for imparting structural viscosity a softener composition utilizing a structuring agent such as a nonionic polymer having a urethane skeleton is known (Japanese Patent Publication No. 2010-529250).
• an object of the present invention is to provide a softener composition which does not undergo phase separation under low temperature conditions, has good handleability, and can stably blend an encapsulated fragrance.
• a liquid softener composition in which the mass ratio C / B of the component (C) to the component is 50 to 5000.
• a liquid softener composition having excellent dispersion stability of an encapsulated fragrance. According to one aspect of the present invention, it is possible to provide a liquid softener composition in which phase separation and high viscosity are suppressed under low temperature conditions. According to one aspect of the present invention, it is possible to provide a liquid softener composition having excellent dispersion stability of the encapsulated fragrance and suppressing phase separation and high viscosity under low temperature conditions.
• the component (A) is blended to impart the effect of imparting flexibility (texture) to the textile product (that is, the original function of the softener) to the liquid softener composition.
• the component (A) contains 1 to 26 hydrocarbon groups having 10 to 26 carbon atoms, which are separated by an ester group (-COO-) and / or an amide group (-NHCO-). It is "at least one compound selected from the group consisting of three amine compounds, salts thereof and quaternized products thereof".
• a tertiary amine acid salt having at least one hydrocarbon group having 10 to 26 carbon atoms, which is separated by an ester group or an amide group in the molecule, or a quaternized product thereof is preferable.
• the hydrocarbon group having 10 to 26 carbon atoms (hereinafter, may be referred to as “long-chain hydrocarbon group” in the present specification) preferably has 16 to 26 carbon atoms, and more preferably 18 to 24 carbon atoms. When the number of carbon atoms is 10 or more, the effect of imparting flexibility is good, and when the number of carbon atoms is 26 or less, the handleability of the liquid softener composition is good.
• the long-chain hydrocarbon group may be saturated or unsaturated.
• the position of the double bond may be anywhere, but when there is one double bond, the position of the double bond is long-chain hydrocarbon. It is preferably located in the center of or around the center of the hydrogen group.
• the long-chain hydrocarbon group may be a chain hydrocarbon group or a hydrocarbon group containing a ring in the structure, and is preferably a chain hydrocarbon group.
• the chain hydrocarbon group may be either linear or branched.
• an alkyl group or an alkenyl group is preferable, and an alkyl group is more preferable.
• the long-chain hydrocarbon group is fragmented by a fragmenting group. The division may be at one place or at two or more places.
• the fusing group is an ester group (-COO-) or an amide group (-NHCO-).
• each dividing group may be the same or different.
• the carbon atom of the dividing group shall be counted as the number of carbon atoms of the long-chain hydrocarbon group.
• Long-chain hydrocarbon groups are usually industrially used unhydrogenated beef fat-derived fatty acids, fatty acids obtained by hydrogenating or partially hydrogenating unsaturated portions, and plant-derived unhydrogenated fatty acids such as palm palms and oil palms. It is introduced by using a hydrogenated fatty acid or fatty acid ester, or a fatty acid or fatty acid ester obtained by hydrogenating or partially hydrogenating an unsaturated portion.
• amine compound having 1 to 3 hydrocarbon groups having 10 to 26 carbon atoms in the molecule, which is separated by an ester group (-COO-) or an amide group (-NHCO-) (hereinafter,” in the present specification ".
• the number of long-chain hydrocarbon groups in “amine compound”) is 1 to 3.
• the number is preferably 2 (secondary amine compound) or 3 (tertiary amine compound), and more preferably 3.
• Examples of the amine compound include compounds represented by the following general formula (A1).
• R 1 to R 3 are independently ⁇ CH 2 CH (Y) OCOR 4 (Y is a hydrogen atom or CH 3 and R 4 is a hydrocarbon group having 7 to 21 carbon atoms), -(CH 2 ) n NHCOR 5 (n is 2 or 3, R 5 is a hydrocarbon group with 7 to 21 carbon atoms), hydrogen atom, alkyl group with 1 to 4 carbon atoms, -CH 2 CH (CH 2) Y) OH (Y is a hydrogen atom or CH 3 ) or-(CH 2 ) n NH 2 (n is 2 or 3), At least one of R 1 to R 3 is ⁇ CH 2 CH (Y) OCOR 4 or ⁇ (CH 2 ) n NHCOR 5 .
• a hydrogen atom is preferable as Y.
• R 4 a hydrocarbon group having 15 to 19 carbon atoms is preferable.
• R 4 is a residue obtained by removing a carboxy group from a fatty acid having 8 to 22 carbon atoms (R 4 COOH) (fatty acid residues), R 4 Nomoto become fatty (R 4 COOH) is , Saturated fatty acid or unsaturated fatty acid, and may be linear fatty acid or branched fatty acid.
• saturated or unsaturated linear fatty acids are preferable.
• the saturation / unsaturated ratio (mass ratio) of the fatty acid that is the source of R 4 is preferably 90/10 to 0/100, and 90/10 to 40, in order to impart good water absorption to the softened clothing. / 60 is more preferable, and 90/10 to 50/50 is particularly preferable.
• R 4 is an unsaturated fatty acid residue, cis and trans isomers are present, but the mass ratio of cis isomer / trans isomer is preferably 40/60 to 100/0, preferably 70/30 to 90/10. Especially preferable.
• fatty acids that form the basis of R 4 include stearic acid, palmitic acid, myristic acid, lauric acid, oleic acid, elaidic acid, linoleic acid, partially hydrogenated palm oil fatty acids (iodine value 10 to 60), and Examples thereof include partially hydrogenated beef fatty acid (iodine value 10 to 60).
• the ratio (mass ratio) of saturated fatty acid / unsaturated fatty acid is 90/10 to 0/100, more preferably 90/10 to 40/60, and particularly preferably 90/10 to 50/50.
• the cis / trans form ratio (mass ratio) is 40/60 to 100/0, more preferably 70/30 to 90/10.
• the fatty acid having 18 carbon atoms is 60% by mass or more, preferably 70% by mass or more, the fatty acid having 20 carbon atoms is less than 2% by mass, and the fatty acid having 21 to 22 carbon atoms is less than 1% by mass. ..
• 3 is preferable as n.
• R 5 a hydrocarbon group having 15 to 19 carbon atoms is preferable.
• R 5 a hydrocarbon group having 15 to 19 carbon atoms is preferable.
• R 1 to R 3 is ⁇ CH 2 CH (Y) OCOR 4 or ⁇ (CH 2 ) n NHCOR 5 ). It is preferable that two of R 1 to R 3 are ⁇ CH 2 CH (Y) OCOR 4 and / or ⁇ (CH 2 ) n NHCOR 5). If one or two of R 1 to R 3 are -CH 2 CH (Y) OCOR 4 and / or-(CH 2 ) n NHCOR 5 ), the remaining two or one is a hydrogen atom.
• alkyl group having 1 to 4 carbon atoms -CH 2 CH (Y) OH (Y is a hydrogen atom or CH 3 ), or-(CH 2 ) n NH 2 (n is 2 or 3).
• a methyl group or an ethyl group is preferable, and a methyl group is particularly preferable.
• Y in -CH 2 CH (Y) OH is the same as Y in -CH 2 CH (Y) OCOR 4 .
• -(CH 2 ) n n in NH 2 is the same as n in- (CH 2 ) n NHCOR 5 .
• Preferred examples of the compound represented by the general formula (A1) include tertiary amine compounds represented by the following general formulas (A1-1) to (A1-7).
• R 9 is a hydrocarbon group having 7 to 21 carbon atoms independently, and each formula (A1-6) to (A1-7).
• R 10 is independently a hydrocarbon group having 7 to 21 carbon atoms.
• Examples of the hydrocarbon group having 7 to 21 carbon atoms in R 9 and R 10 include the same hydrocarbon group having 7 to 21 carbon atoms in R 4 of the general formula (A1), and preferably, the hydrocarbon group has 7 to 21 carbon atoms. 15 to 17 alkyl and alkenyl groups.
• R 9 of the plurality of may be the same as each other, may be different.
• the component (A) of the present invention may be a salt of an amine compound.
• a salt of a tertiary amine compound is preferable.
• a salt of an 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. Neutralization of the amine compound can be carried out by a known method.
• the component (A) may be a quaternized product of an amine compound.
• a quaternary compound of a tertiary amine compound is preferable.
• a quaternized product of an amine compound is obtained by reacting the amine compound with a quaternizing agent.
• the quaternizing agent used for quaternization of the amine compound include alkyl halides such as methyl chloride and dialkyl sulfuric acid such as dimethyl sulfate.
• an alkyl group of the quaternary agent is introduced into the nitrogen atom of the amine compound, and a salt of the 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.
• the abundance ratio represented by "quaternized compound (A1-1) / quaternized compound (A1-2)" is 99/1 to 50/50 in terms of mass ratio. It is preferable to synthesize so as to be.
• a compound represented by the general formula (A1-3) (hereinafter referred to as “compound (A1-3)") and a 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)”) are the fatty acid composition or fatty acid methyl ester composition described in the column of R 4 of the general formula (A1). It can be synthesized by a condensation reaction between a compound and triethanolamine. At that time, the content ratio of each component to the total mass of the compounds (A1-3), (A1-4) and (A1-5) is 1 to 60 for the compound (A1-3) from the viewpoint of imparting flexibility.
• the content is% by mass
• the compound (A1-4) is 5 to 98% by mass
• the compound (A1-5) is 0.1 to 40% by mass
• the compound (A1-3) is 30 to 60% by mass. It is more preferable that (A1-4) is 10 to 55% by mass and the compound (A1-5) is 5 to 35% by mass.
• dimethyl sulfate is used as the quaternizing agent from the viewpoint of sufficiently advancing the quaternization reaction.
• the abundance ratio of each quaternized compound (A1-3), (A1-4), and (A1-5) is a mass ratio from the viewpoint of imparting flexibility, and the quaternized product of compound (A1-3) is 1.
• the quaternized product of the compound (A1-4) is 5 to 98% by mass
• the quaternized product of the compound (A1-5) is 0.1 to 40% by mass
• the compound (A1-5) is 0.1 to 40% by mass.
• the quaternized product of 3) is 30 to 60% by mass
• the quaternized product of compound (A1-4) is 10 to 55% by mass
• the quaternized product of compound (A1-5) is 5 to 35% by mass. More preferred.
• the compounds (A1-3), (A1-4), and (A1-5) are quaternized, generally, the esteramine that has not been quaternized remains even after the quaternization reaction. At that time, the ratio of "quaternized / non-quaternized esteramine" is preferably in the range of 70/30 to 99/1.
• a compound represented by the general formula (A1-6) (hereinafter referred to as “compound (A1-6)") and a compound represented by the general formula (A1-7) (hereinafter referred to as “compound (A1-7)””.
• ) is a fatty acid composition as described in the column of R 4 in the general formula (A1), from adducts of N- methylethanolamine with acrylonitrile, J. Org. Chem. , 26, 3409 (1960), can be synthesized by a condensation reaction with N- (2-hydroxyethyl) -N-methyl-1,3-propylene diamine synthesized by a known method.
• At least one selected from the group consisting of the compound represented by the general formula (A1), a salt thereof and a quaternary compound thereof is preferable. More preferably, at least one selected from the group consisting of the compounds represented by the general formulas (A1-1) to (A1-7), salts thereof and quaternized compounds thereof is more preferable. At least one selected from the group consisting of the compounds represented by the general formulas (A1-3) to (A1-5), salts thereof and quaternized compounds thereof is more preferable.
• one kind of amine compound, a salt thereof or a quaternary compound thereof may be used alone, or a mixture consisting of two or more kinds, for example, in the general formulas (A1-3) to (A1-5). It may be used as a mixture of the represented compounds.
• the blending amount of the component (A) is not particularly limited as long as the blending purpose can be achieved, but is preferably 4 to 25% by mass, more preferably 5 to 18% by mass, based on the total mass of the liquid softener composition. , 6 to 15% by mass is particularly preferable, and 9 to 12 is most preferable.
• the blending amount of the component (A) is 4% by mass or more, a sufficient scent-sustaining effect can be obtained while exhibiting a function as a softening agent.
• the blending amount of the component (A) is 25% by mass or less, the storage stability of the liquid softener composition is better.
• the component (B) blended in the liquid softener composition of the present invention is a nonionic polymer having a urethane skeleton.
• Such component (B) can be a rheology regulator.
• the component (B) is blended in a constant ratio with respect to the component (C) to improve the dispersion stability of the encapsulated fragrance and / or phase separation and high under low temperature conditions. Formulated to suppress viscosity.
• One of the mechanisms by which the component (B) functions as a rheology regulator may be the formation of aggregates.
• the component (B) can be a nonionic polymer having a hydrophobic group and a urethane skeleton.
• component (B) is a nonionic polymer having hydrophobic groups at both ends and a urethane skeleton inside the molecule, and in particular, component (B) has hydrophobic groups at both ends and is a molecule.
• the hydrophobic group that the component (B) can have is not particularly limited, but for example, a linear or branched chain such as an alkyl group or a cycloalkyl group, a cyclic hydrocarbon group, or an optionally substituted aryl group. And arylalkyl groups and the like.
• the hydrophilic group that the component (B) can have is not particularly limited, and examples thereof include polyoxyalkylene and polyoxyalkenylene.
• component (B) a commercially available component may be used, or a component produced by a known method may be used.
• Commercially available products of the component (B) include, for example, OPTIFLO-H 7625 VF manufactured by BYK-Chemie, OPTIFLO-H 7500 VF, OPTIFLO-H 6500 VF, OPTIFLO-H 3300 VF, OPTIFLO 2600 VF, and DOWN.
• Acuryn 44 but is not limited to these.
• a polyol is reacted with an excess amount of diisocyanate to form a prepolymer having isocyanate groups at both ends, and then an amine having a structure as a hydrophobic group is used (B). ) Manufacture of ingredients. Further, the component (B) can also be produced from a polyol, a diisocyanate, and an alcohol having a structure serving as a hydrophobic group. The method for producing the component (B) is not limited to these.
• polyol examples include polyether polyols such as polyethylene glycol and polypropylene glycol, polyester polyols, and the like, and the polyol constitutes a hydrophilic group in the component (B).
• the mass average molecular weight of the component (B) is not particularly limited, but is, for example, 1,000 to 1,000,000, preferably 2,000 to 500,000, and more preferably 5,000 to 300,000. obtain.
• the component (B) one type may be used alone, or two types may be used in combination.
• the blending amount of the component (B) is not particularly limited as long as the blending purpose can be achieved, but is preferably 0.001 to 0.05% by mass, preferably 0.002 to 0.002 to the total mass of the liquid softener composition.
• the blending amount of the component (B) is advantageous in that the effect can be obtained even with such a very small amount.
• the mechanism of action of the component (B) and its effect will be described below. As described above, it is presumed that the component (B) exists between the vesicle particles composed of the component (A), and a crosslinked structure can be formed by connecting the vesicle particles to each other. It is considered that two effects can be obtained by forming the crosslinked structure via the component (B) in this way. The first is that rheological characteristics are added.
• the formation of the crosslinked structure provides the viscosity and thixotropy required for stabilizing the dispersion of the capsule particles.
• the second is to prevent excessive aggregation that causes phase separation and the like.
• the hydrophobic part of the component (B) interacts with the vesicle particles composed of the component (A), while the urethane structure, which is the hydrophilic part, does not easily interact with the hydrophobic vesicle particles, and tries to keep the vesicle particles away. It is thought that the power to do works. Therefore, it is considered that the presence of the component (B) between the vesicle particles keeps the distance between the vesicle particles constant and prevents excessive aggregation.
• component (B) is particularly suitable for imparting rheological properties in an emulsified system.
• the component (B) as an emulsifying structuring agent includes gums such as gellan gum, carrageenan gum, and xanthan gum, which are generally used as structuring agents, and (meth) acrylic acid such as an acrylic acid alkyl ester copolymer. Compared to based polymers, it is advantageous in that it is less likely to thicken after high temperature storage.
• the component (C) blended in the liquid softener composition of the present invention is a nonionic surfactant.
• the component (C) is blended in a constant ratio with respect to the component (B) to improve the dispersion stability of the encapsulated fragrance and / or phase separation and high under low temperature conditions. Formulated to suppress viscosity.
• a component derived from a polyhydric alcohol, a higher alcohol, a higher amine or a higher fatty acid can be used, and a component known as a nonionic surfactant in the field of liquid softener composition is used. Can be done.
• the component (C) examples include glycerin fatty acid ester or pentaerythritol in which a fatty acid having 10 to 22 carbon atoms is ester-bonded to glycerin or pentaerythritol.
• an alkylene oxide adduct of an alcohol or a fatty acid can be used as another example of the component (C).
• Each carbon chain portion of the alcohol and the fatty acid may be branched, linear or unsaturated.
• the carbon chain may have a distribution.
• the carbon number of the carbon chain is preferably 6 to 20, more preferably 8 to 18.
• the number of carbon atoms is preferably 6 to 14, more preferably 8 to 12, and most preferably 10 to 12.
• the carbon chain is a branched chain, the number of carbon atoms is preferably 6 to 18, more preferably 9 to 18, and most preferably 13.
• the raw material of the component (C) which is a nonionic surfactant Exxon Mobil Co., Ltd., LUTENSOL series manufactured by BASF Co., Ltd., Oxocol manufactured by Kyowa Hakko Kogyo Co., Ltd., DOBANOL series manufactured by Shell Co., Ltd., and the like can be used.
• the nonionic surfactant is an alkylene oxide adduct of an alcohol
• a primary alcohol or a secondary alcohol can be used.
• the alcohol having 13 carbon atoms is produced from, for example, dodecene, and the starting material thereof may be butylene or propylene.
• the carbon chain contains an unsaturated group, it is particularly preferable that the carbon chain has 18 carbon atoms.
• the stereoisomeric structure of the unsaturated group may be a cis-form or a trans-form, or a mixture of both, but in particular, the ratio of the cis-form / trans-form is 25/75 to 100/0 (mass ratio).
• the alkylene oxide ethylene oxide (EO) is preferable, but propylene oxide (PO) or butylene oxide (BO) may be added together with EO.
• EO ethylene oxide
• PO propylene oxide
• BO butylene oxide
• the average number of moles of EO added is preferably 10 to 100 mol, more preferably 20 to 80 mol, and particularly preferably 40 to 70 mol.
• the average number of moles of PO or BO added together with EO is preferably 1 to 5, and more preferably 1 to 3 moles.
• PO or BO may be added after adding EO, or EO may be added after adding PO or BO.
• component (C) a polyoxyethylene alkyl ether having an alkyl group or an alkenyl group having 10 to 22 carbon atoms and having an average addition molar number of ethylene oxide of 10 to 100 mol; polyoxyethylene fatty acid.
• Alkyl (1 to 3 carbon atoms of the alkyl) ester Polyoxyethylene alkylamine having an average added molar number of ethylene oxide of 10 to 100 mol
• Alkyl polyglucoside having an alkyl group or alkenyl group having 8 to 18 carbon atoms
• Examples thereof include hardened castor oil having an average addition molar number of ethylene oxide of 10 to 100 mol.
• a polyoxyethylene alkyl ether having an alkyl group having 10 to 18 carbon atoms and having an average number of moles of ethylene oxide added of 20 to 80 mol is preferable, and more preferably, an average number of moles of ethylene oxide added is 30 to 70 mol.
• Polyoxyethylene alkyl ethers particularly preferably polyoxyethylene alkyl ethers having an average added molar number of ethylene oxide of 40 to 60.
• Specific examples of the component (C) include an average EO9PO1 adduct of nonyl alcohol, an average EO 40 mol adduct of primary isononyl alcohol, an average EO 20 mol adduct of primary isodecyl alcohol, and an average EO 20 mol adduct of lauryl alcohol.
• Examples thereof include an average EO60 mol adduct of primary isohexadecyl alcohol, an average EO 60 mol adduct of primary isotridecyl alcohol, an average EO 50 mol adduct of tridecyl alcohol, and an average EO 20 mol adduct of lauric acid.
• Emarex series manufactured by Nippon Emulsion Emalmin series manufactured by Sanyo Kasei, TDA series manufactured by Lion Chemical, Softanol series manufactured by Nippon Shokubai, LUTESOL series manufactured by BASF, and the like can be used.
• polyoxyalkylene amine, a salt thereof, or a quaternary product thereof can also be used.
• the compound is represented by the following general formula (C1).
• the carbon number of the hydrocarbon group of R 9 in the general formula (C1) is preferably 8 to 8 to 100.
• a 1 O and A 2 O in the general formula (C1) are oxyalkylene groups having 2 to 4 carbon atoms independently, and may contain two or more kinds of groups. , It may be added in a block shape or randomly.
• Examples of the compound represented by the general formula (C1) include a 2 mol adduct of dodecylamine ethylene oxide, a 5 mol adduct of dodecylamine ethylene oxide, a 15 mol adduct of dodecylamine ethylene oxide, and a 20 mol adduct of dodecylamine ethylene oxide.
• the blending amount of the component (C) is not particularly limited as long as the blending purpose can be achieved, but is preferably 1 to 10% by mass, more preferably 2 to 6% by mass, based on the total mass of the liquid softener composition. 3 to 5% by mass is particularly preferable.
• the blending amount of the component (C) is 1% by mass or more, the freeze-restorability is good, and when the blending amount of the component (C) is 10% by mass or less, an appropriate viscosity can be imparted, so that the handling property is good. Become.
• the mass ratio C / B of the component (C) to the component (B) is 50 to 5000, preferably 100 to 3000, and more preferably 200 to 2500. , Particularly preferably 500 to 2000.
• the C / B is in the range of 50 to 5000, both improvement of dispersion stability of the encapsulated fragrance and suppression of phase separation and high viscosity under low temperature conditions can be achieved.
• the component (D) is an encapsulated fragrance, which improves the fragrance of the textile product treated with the liquid softener composition, enhances the persistence of the scent, or It is blended to give a fragrance effect due to friction when using textile products.
• the encapsulated fragrance is composed of a core substance and a wall substance that covers the core substance.
• the core material contains a fragrance composition.
• a fragrance composition those used in the field of liquid softener compositions can be used without particular limitation, and can be appropriately selected depending on the intended purpose.
• essential oils and absolutes commonly used in fabric softeners and detergents for clothing as well as hydrocarbons, alcohols, aldehydes, ketones, ethers, acetals, ketals, nitriles, etc. Synthetic perfume components and the like. Examples of preferable fragrance components to be blended in the fragrance composition are described in JP-A-2010-520928.
• alcohol C8 aldehyde C6 (hereinafter, the notation Cn includes n carbon atoms and all isomers with one aldehyde function), aldehydes.
• the wall material those generally used as a fragrance encapsulating material in the field of liquid softener composition can be used without particular limitation.
• the wall material is composed of a polymer substance, specifically, a natural polymer such as gelatin or agar, an oily film-forming substance such as oil or wax, a polyacrylic acid type, a polyvinyl type, a polymethacrylic acid type, and the like.
• examples thereof include synthetic polymer substances such as melamine-based and urethane-based substances, and one of them can be used alone or two or more of them can be used in combination as appropriate.
• the wall material is preferably an aminoplast polymer composed of a melamine-formaldehyde resin or a urea-formaldehyde resin, a polyacrylic acid-based polymer, or a polymethacrylic acid-based polymer. ..
• Aminoplast polymers as described in JP-A-2010-520928 are particularly preferred. Specifically, it is preferably a terpolymer composed of a polyamine-derived moiety / aromatic polyphenol-derived moiety / methylene unit, and an alkylene and alkyleneoxy moiety having dimethoxymethylene and dimethoxymethylene.
• the component (D) is readily available on the market or can be synthesized by known methods.
• the component (D) one type of encapsulated fragrance may be used alone, or may be used as a mixture consisting of two or more types.
• the blending amount of the component (D) (the blending amount as the amount of the fragrance in the component (D)) is not particularly limited as long as the blending purpose can be achieved, but the fragrance is added to the total mass of the liquid softener composition.
• the amount of the above is preferably 0.01 to 3% by mass, more preferably 0.05 to 2% by mass, and particularly preferably 0.1 to 1% by mass. When the blending amount is 0.01 to 3% by mass, it is possible to impart favorable scent persistence while maintaining better freeze-restorability in the liquid softener composition.
• components known in the field of liquid softener compositions may be added to the liquid softener composition of the present invention, if necessary, as long as the effects of the present invention are not impaired. It can be appropriately blended.
• water, amphoteric surfactants, water-soluble solvents, sugar compounds, dyes and / or pigments, preservatives, UV absorbers, antibacterial agents, fragrances, anti-wash wrinkles, rheology modifiers other than component (B). (Thickening agent) and the like can be blended.
• the liquid softener composition of the present invention is preferably an aqueous composition containing water.
• water tap water, ion-exchanged water, pure water, distilled water and the like can be used. Of these, ion-exchanged water is preferable.
• the amount of water to be blended 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 softener composition. When the blending amount is 50% by mass or more, the handleability becomes better.
• Amphoteric surfactants can be formulated for further improvement in stability, in particular for further improvement in freeze-restorability.
• amphoteric surfactants include betaine, N-alkyl amino acids, N-alkenyl amino acids, and salts thereof.
• betaine include alkyl betaine, carbobetaine, amide betaine, sulfobetaine, amide sulfobetaine, imidazolinium betaine, and phosphobetaine.
• N-alkyl amino acids or N-alkenyl amino acids have an alkyl or alkenyl group attached to a nitrogen atom, and one or two "-R-COOH" (in the formula, R represents a divalent hydrocarbon group.
• a hydrogen atom is further bonded to the nitrogen atom.
• One "-R-COOH” is called a mono body, and two things are called a di body.
• the amphoteric surfactant either mono-form or di-form can be used.
• the alkyl group and the alkenyl group may be linear or branched chain, respectively.
• the amphoteric surfactant as the optional component is preferably sulfobetaine or amide sulfobetaine, and more preferably sulfobetaine represented by the following general formula (IV) or a mixture thereof.
• R 1 ' is an alkyl or alkenyl group of a straight-chain or branched-chain having 9 to 23 carbon atoms
• W is an ester group or an amide group r is an integer from 1 to 4
• R 1 ' is preferably 11 to 17.
• R 1' is a fatty acid residue, and specific examples thereof include lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, palmitooleic acid, elaidic acid, linoleic acid, and ecoic acid.
• W is preferably an ester group.
• R 2' include a methyl group, an ethyl group, a hydroxyethyl group, a hydroxypropyl group and the like.
• S in R 3 ' is preferably 2-3.
• sulfobetaine represented by the general formula (IV) include sulfobetaines represented by the following general formulas (V) to (VII). Among these, the compounds represented by (V) and (VI) are more preferable. (In each the formula, R 1 'definition of, R 1 of the general formula (IV)' is the same as)
• R 1' may be the same or different. Iodine value of the underlying fatty acid composition of R 1 'is preferably 0-100, more preferably 0-70, more preferably 20-45.
• the amphoteric surfactant is readily available on the market or can be synthesized by known methods. As the amphoteric surfactant, one kind may be used alone, or may be used as a mixture consisting of two or more kinds. For example, a mixture consisting of a plurality of types of sulfobetaines represented by the general formula (IV) or a mixture consisting of any combination of sulfobetaines represented by the general formulas (V) to (VII) can be used.
• the ratio of cis compounds is 25 to 95%, preferably 40 to 90%, with respect to the geometric isomerism based on the alkenyl group constituting each sulfobetaine.
• the viscosity of the liquid softener composition can be made appropriate. It is preferably 0.01 to 3% by mass, more preferably 0.05 to 2% by mass, and further preferably 0.1 to 1% by mass with respect to the total mass of the liquid softener composition.
• the blending amount is 0.01% by mass or more, better freeze stability can be obtained, and when it is 3% by mass or less, better storage stability can be obtained at high temperature.
• the water-soluble solvent may be added to further improve the stability of the liquid softener composition, in particular to further improve freeze-restorability.
• 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 is preferable. Specifically, it is 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). It is preferable to add a solvent component.
• R 6- O- (C 2 H 4 O) y- (C 3 H 6 O) Z- H ...
• X is an alkyl group or an alkenyl group having 1 to 6 carbon atoms, preferably 2 to 4 carbon atoms, y and z are average addition moles, respectively, and y is 1 to 10, preferably 2 to 4 carbon atoms. 5 and z is 0 to 5, preferably 0 to 2.
• ethanol, ethylene glycol, butyl carbitol, propylene glycol, dipropylene glycol monomethyl ether and diethylene glycol monobutyl ether are preferable.
• the blending amount of the water-soluble solvent is not particularly limited, but is preferably 0 to 30% by mass, more preferably 0.01 to 25% by mass, still more preferably 0.1 to 20% by mass, based on the total mass of the liquid softener composition. It is mass%.
• the sugar-based compound may be added to further improve the stability of the liquid softener composition, particularly the freeze-restorability.
• the sugar-based compound those having a number of repeating units (degree of polymerization) of the sugar skeleton of 1 to 40 are preferable, 1 to 20 are more preferable, and 1 to 5 (that is, monosaccharides and oligos having a degree of polymerization of more than 1 and 5 or less) are preferable.
• Sugar is particularly preferred.
• Preferred sugar compounds include monosaccharides, disaccharides, oligosaccharides and sugar alcohols.
• sugars include glucose, fructose, galactose, arabinose, ribose, maltose, isomaltose, cellobiose, lactose, sucrose, trehalose, talose, maltotriose, isomalttriose, and partial hydrolysis of natural polysaccharides.
• sugars include glucose, fructose, galactose, arabinose, ribose, maltose, isomaltose, cellobiose, lactose, sucrose, trehalose, talose, maltotriose, isomalttriose, and partial hydrolysis of natural polysaccharides.
• sugars include glucose, fructose, galactose, arabinose, ribose, maltose, isomaltose, cellobiose, lactose, sucrose, trehalose, talose, maltotriose, isomalttrios
• Examples of the substituent that can be introduced include an alkyl group, an alkenyl group, an alkoxy group, a hydroxyalkyl group, an amine group, a quaternary ammonium group, a carboxyl group and the like, and among these, an alkyl group, an alkenyl group and an alkoxy group are particularly mentioned. Can be mentioned.
• an alkyl group having 1 to 18 carbon atoms, an alkenyl group or an alkoxy group is preferable, an alkyl group having 1 to 12 carbon atoms, an alkenyl group or an alkoxy group is more preferable, and an alkyl group having 1 to 6 carbon atoms is further preferable.
• Alkyl groups having 1 to 3 carbon atoms are preferable, and alkyl groups having 1 to 3 carbon atoms are most preferable.
• the sugar is selected from monosaccharides and oligosaccharides having a degree of polymerization of 1 to 5, and compounds in which the hydrogen atom of at least one hydroxyl group is substituted with an alkyl group in the monosaccharides and oligosaccharides having a degree of polymerization of 1 to 5.
• One or more is preferable.
• trehalose is preferable from the viewpoint of freeze-restorability.
• sugar alcohols include erythritol, threitol, pentitol, hexitol, darsitol, sorbitol, mannitol, volemitol, perseilutol, xylitol, maltitol, lactitol and the like.
• the sugar-based compound may be used alone or as a mixture of two or more.
• the blending amount of the sugar-based compound is not particularly limited, but is preferably 0.01 to 10% by mass, more preferably 0.05 to 7% by mass, still more preferably 0.1, based on the total mass of the liquid softener composition. ⁇ 5% by mass.
• Dyes and pigments can each be formulated to improve the appearance of the liquid fabric softener composition.
• components known in the field of liquid softener composition can be used without particular limitation. Specific examples of dyes that can be added are described in the Dye Handbook (edited by the Society of Synthetic Organic Chemistry, published on July 20, 1970, Maruzen Co., Ltd.).
• JP-A-6-123081, JP-A-6-123082, JP-A-7-18573, JP-A-8-27669, JP-A-9-250805, JP-A-10-77576, Dyes described in JP-A-11-43865, JP-A-2001-181972, JP-A-2001-348784, and the like can also be used.
• it is one or more of red, blue, yellow or purple water-soluble dyes selected from acid dyes, direct dyes, basic dyes, reactive dyes and mordant / acid mordant dyes.
• acid dyes and direct dyes having at least one functional group selected from hydroxyl groups, sulfonic acid groups, amino groups and amide groups in the molecule.
• a reactive dye is preferable.
• the dye and the pigment one type may be used alone, or may be used as a mixture consisting of two or more types. Further, the dye and the pigment may be used in combination.
• the blending amounts of the dye and the pigment are not particularly limited, but are preferably 1 to 50 ppm, more preferably 1 to 30 ppm, based on the total mass of the liquid softener composition.
• Preservatives may be formulated primarily to enhance the antiseptic and bactericidal activity of liquid fabric softener compositions and to maintain antiseptic properties during long-term storage.
• ingredients known in the field of liquid softener compositions can be used without particular limitation. Specific examples thereof include isothiazolone-based organic sulfur compounds, benzisothiazolone-based organic sulfur compounds, benzoic acids, 2-bromo-2-nitro-1,3-propanediol and the like.
• Isothiazolin-based organic sulfur compounds include 5-chloro-2-methyl-4-isothiazolin-3-one, 2-n-butyl-3-isothiazolinone, 2-benzyl-3-isothiazolinone, and 2-phenyl-3-isothiazolinone. , 2-Methyl-4,5-dichloroisothiazolinone, 5-chloro-2-methyl-3-isothiazolinone, 2-methyl-4-isothiazolin-3-one, and mixtures thereof.
• 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one are preferable, and 5-chloro-2-methyl-4-isothiazolin-3-one and 2 A mixture with -methyl-4-isothiazolin-3-one is more preferable, and a mixture of about 77% by mass of the former and about 23% by mass of the latter or a diluted solution thereof (for example, isothiazolinone solution) is particularly preferable.
• Benzisothiazolinone-based organic sulfur compounds include 1,2-benzisothiazolin-3-one and 2-methyl-4,5-trimethylen-4-isothiazolin-3-one, and related compounds are dithio-2,2-bis ().
• Benzmethylamide and mixtures thereof. Of these, 1,2-benzisothiazolin-3-one is particularly preferable.
• benzoic acids include benzoic acid or a salt thereof, parahydroxybenzoic acid or a salt thereof, methyl paraoxybenzoate, ethyl paraoxybenzoate, propyl paraoxybenzoate, butyl paraoxybenzoate, benzyl paraoxybenzoate and the like.
• the blending amount of the preservative is not particularly limited, but is preferably 0.0001 to 1% by mass with respect to the total mass of the liquid softener composition. When it is 0.0001% by mass or more, the effect of blending the preservative is sufficiently obtained, and when it is 1% by mass or less, high storage stability of the liquid softener composition can be sufficiently maintained.
• UV absorber UV absorbers may be formulated to protect the liquid fabric softener composition from UV light.
• the ultraviolet absorber is a component that exerts an ultraviolet protective effect by absorbing ultraviolet rays, converting them into infrared rays, visible rays, and the like and emitting them.
• components known in the field of liquid softener compositions can be used without particular limitation. Specific examples include, for example, aminobenzoic acid derivatives such as p-aminobenzoic acid, ethyl p-aminobenzoate, glyceryl p-aminobenzoate, and amyl p-dimethylaminobenzoate; ethylene glycol salicylate, dipropylene glycol salicylate.
• Salicylic acid derivatives such as octyl salicylate and myristyl salicylate; methyl diisopropylsilicate, ethyl p-methoxysilicate, isopropyl p-methoxysilicate, -2-ethylhexyl p-methoxysilicate, p-methoxykei.
• Salicylic acid derivatives such as butyl selate; benzophenone derivatives such as 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid, and 2,2'-dihydroxy-4-methoxybenzophenone; Examples thereof include azole compounds such as urocanic acid and ethyl urocanate; 4-t-butyl-4'-methoxybenzoylmethane and the like.
• the blending amount of the ultraviolet absorber is not particularly limited, but is preferably 0.001 to 5% by mass with respect to the total mass of the liquid softener composition.
• Antibacterial agents can be formulated to enhance the shelf life of the liquid fabric softener composition.
• components known in the field of liquid softener composition can be used without particular limitation. Specific examples include, for example, diclosan, triclosan, benzalkonium chloride, zinc bis- (2-pyridylthio-1-oxide), 8-oxyquinoline, biguanide compounds (eg, polyhexamethylene biguanide), chlorohexidine hydrochloride, and the like. , Polylysine and the like. Among these, benzalkonium chloride, biguanide compounds, and chlorohexidine hydrochloride are preferable.
• the blending amount of the antibacterial agent is not particularly limited as long as the blending purpose can be achieved, but is preferably 0.001 to 5% by mass with respect to the total mass of the liquid softener composition.
• Rheology modifiers (thickeners) other than the component (B) can be added to adjust the viscosity of the liquid softener composition and to stabilize the dispersion of capsule fragrances and the like.
• Specific examples include gums such as gellan gum, carrageenan gum, and xanthan gum, acrylic acid polymers such as methacrylic acid alkyl ester / acrylic acid copolymer (CARBOPOL AQUA30) and cationic acrylic homopolymer (Rheovis FRC), and fine cellulose. , Highly branched cyclic dextrin (cluster dextrin) and the like.
• antioxidants eg, butylated hydroxytoluene
• reducing agents e.g., butylated hydroxytoluene
• emulsions such as polystyrene emulsions
• opaque agents for improving the aroma and color stability of liquid softener compositions.
• the pH of the liquid softener composition is not particularly limited, but the pH at 25 ° C. is set to 1 to 6 from the viewpoint of improving the dispersibility of the encapsulated fragrance and suppressing the hydrolysis of the component (A) with the aging of storage. It is preferable to adjust to the range of 2 to 4, more preferably to the range of 2 to 3, and further preferably to the range of 2 to 3.
• a pH adjuster such as a short chain amine compound such as dimethylamine, an alkali metal hydroxide such as sodium hydroxide, an alkali metal carbonate, or an alkali metal silicate can be used.
• the viscosity of the liquid softener composition is not particularly limited as long as its usability is not impaired, but is preferably less than 1000 mPa ⁇ s. Considering the increase in viscosity due to storage aging, the viscosity immediately after production is more preferably less than 800 mPa ⁇ s, and even more preferably less than 500 mPa ⁇ s. When it is less than 800 mPa ⁇ s, the usability such as handleability at the time of putting it into the washing machine is good. From the viewpoint of usability, the lower limit of viscosity is not particularly limited.
• Inorganic or organic water-soluble salts can be used for the purpose of controlling the viscosity of the liquid softener composition of the present invention.
• calcium chloride, magnesium chloride, sodium chloride, sodium p-toluenesulfonate, sodium citrate and the like can be used, but among them, calcium chloride, magnesium chloride and sodium citrate are preferable.
• These water-soluble salts can be blended in an amount that does not impair the dispersibility of the encapsulated fragrance, and the blending amount is, for example, 0 to 0.5% by mass, preferably 0 to 0.5% by mass, based on the total mass of the liquid softener composition. Is 0 to 0.3% by mass, more preferably 0 to 0.1% by mass.
• the water-soluble salts may be blended at any step in the production of the liquid softener composition.
• the viscosity of the liquid softener composition in the present invention means a value measured at 25 ° C. using a B-type viscometer (for example, an analog viscometer T manufactured by Brookfield).
• the method for preparing the liquid softener composition of the present invention is not particularly limited. It can be produced by a known preparation method of a liquid softener composition, for example, a method similar to a conventional method for preparing a softener composition using a cationic surfactant as a main agent. For example, an oil phase containing the components (A) and (C) and an aqueous phase are mixed under temperature conditions equal to or higher than the melting point of the component (A) to prepare an emulsion, and then the obtained emulsion is obtained. It can be produced by adding and mixing the component (B) and the component (D) with other components as needed.
• the oil phase can be prepared by mixing the component (A), the component (C), and if necessary, an arbitrary component at a temperature equal to or higher than the melting point of the component (A).
• the aqueous phase can be prepared by mixing water and, if necessary, any component.
• the component (C) may be mixed with the aqueous phase, or the oil phase and the aqueous phase may be added to and mixed with the emulsion obtained by mixing the oil phase and the aqueous phase under temperature conditions equal to or higher than the melting point of the component (A). good.
• the method of using the liquid softener composition of the present invention is not particularly limited, and the liquid softener composition can be used in the same manner as a general softener composition.
• A-1 The cationic surfactant according to Example 4 of JP-A-2003-12471.
• A-1 is a compound represented by the general formulas (A1-3), (A1-4) and (A1-5) (in each formula, R 9 is an alkyl group and an alkenyl group having 15 to 17 carbon atoms. ) Is quaternized with dimethyl sulfate.
• A-2 Product name "Stepantex SE-88", manufactured by Stepan.
• A-3 Cationic surfactant (N, N-bis (stearoyl-oxy-ethyl) obtained by quaternizing the reaction product of fatty acid and methyldiethanolamine at a molar ratio of 1.5: 1 with methyl chloride.
• a 1 1 molar mixture of N, N-dimethylammonium chloride and N- (stearoyl-oxy-ethyl) N-hydroxyethyl N, N dimethylammonium chloride.).
• A-3 is a compound represented by the general formulas (A1-1) and (A1-2) (in each formula, R 9 is an alkyl group and an alkenyl group having 15 to 17 carbon atoms) with methyl chloride 4 It is a composition containing a graded product.
• B Nonionic polymer having urethane skeleton
• B-1 Product name "OPTIFLO-H 7625 VF", manufactured by BYK-Chemie.
• B-2 Product name "OPTIFLO-H 7500 VF", manufactured by BYK-Chemie.
• B-3 Product name "OPTIFLO-H 6500 VF", manufactured by BYK-Chemie.
• B-4 Product name "OPTIFLO-H 3300 VF", manufactured by BYK-Chemie.
• B-5 Product name "OPTIFLO 2600 VF", manufactured by BYK-Chemie.
• B-6 Product name "Aculin 44", manufactured by DOW.
• C-1 60 mol of polyoxyethylene isotridecyl ether EO (BASF's lutenzole TO3 with ethylene oxide added (60 mol of EO indicates that the average number of moles of ethylene oxide added is 60)).
• C-2 Polyoxyethylene isotridecyl ether EO 40 mol (BASF's lutenzole TO3 with ethylene oxide added (40 mol of EO indicates that the average number of moles of ethylene oxide added is 40)).
• C-3 Polyoxyethylene lauryl ether EO 20 mol (20 mol of ethylene oxide added to lauryl alcohol (20 mol of EO indicates that the average number of added moles of ethylene oxide is 20)).
• D-1 Product name "GREEN BREEZE CAPS", manufactured by Givaudan.
• D-2 Product name "ORCARD GARDEN CAPS”, manufactured by Givaudan. Both D-1 and D-2 are encapsulated fragrances having a fragrance composition as a core substance and a melamine-formaldehyde-based resin as a capsule wall.
• E-1 Isothiazolone solution (trade name "Caisson CG-ICP", manufactured by DuPont)
• E-2 1,2-Benz isothiazolin-3-one (trade name "Nipacid BIT 20", manufactured by Clariant Japan)
• F-1 Calcium chloride (trade name "granular calcium chloride", manufactured by Tokuyama Corporation)
• G-1 Free fragrance containing fragrance ingredients with the composition shown in Table 1 below.
• H-1 Butylated hydroxytoluene (trade name "SUMILLIZER BHT", manufactured by Sumitomo Chemical Co., Ltd.) [Washing anti-wrinkle agent]
• I-1 Polyether-modified silicone (kinematic viscosity 8000 mm 2 / s) described as A-1 in Examples of JP-A-2009-155739.
• the component (A), the component (C), a fragrance, an antioxidant, and if necessary, a washing wrinkle inhibitor (silicone) were mixed and stirred to obtain an oil phase mixture.
• 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 corresponds to the balance obtained by subtracting the total amount of the oil phase mixture, the component (B), the preservative, the component (D), and the viscosity control agent from 980 g.
• the aqueous phase mixture heated above the melting point of the component (A) is added in two portions. And stirred.
• the division ratio of the aqueous phase mixture is 30:70 (mass ratio)
• the stirring is performed at a rotation speed of 1,000 rpm for 3 minutes after the first addition of the aqueous phase mixture and 2 minutes after the second addition of the aqueous phase mixture.
• the component (B), the component (D) and the viscosity control agent are added, and if necessary, hydrochloric acid (reagent 1 mol / L, Kanto Chemical Co., Inc.) or sodium hydroxide (reagent 1 mol / L, Kanto) is added. Chemistry) was added in an appropriate amount to adjust the pH to 2.5, and ion-exchanged water was further added so that the total mass was 1,000 g to obtain the desired liquid softener composition.
• phase separation stability 80 mL of each liquid softener composition prepared by the above "preparation method of liquid softener composition” was placed in a lightweight PS glass bottle (PS-No. 11, manufactured by Tanuma Glass Industry Co., Ltd.) and sealed. And said.
• the evaluation sample was stored under the condition of 15 ° C. for 1 month, and the state after storage (degree of separation of the softener composition) was evaluated based on the following criteria.
• the evaluation was visually performed by 5 specialized panels based on the following criteria. The results are represented by the average value of 5 persons (rounded to the nearest whole number) and are shown in the section "Phase separation stability" in Table 2 below. A score of 3 or higher was judged to be acceptable.

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