WO2022264507A1 - 液体皮膚洗浄剤組成物 - Google Patents
液体皮膚洗浄剤組成物 Download PDFInfo
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- WO2022264507A1 WO2022264507A1 PCT/JP2022/005716 JP2022005716W WO2022264507A1 WO 2022264507 A1 WO2022264507 A1 WO 2022264507A1 JP 2022005716 W JP2022005716 W JP 2022005716W WO 2022264507 A1 WO2022264507 A1 WO 2022264507A1
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- 239000003352 sequestering agent Substances 0.000 description 1
- 239000002453 shampoo Substances 0.000 description 1
- 229940045790 sodium lauryl glycol carboxylate Drugs 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- UIGBPGNEWMRLGK-UHFFFAOYSA-M sodium;2-(2-hydroxydodecoxy)acetate Chemical compound [Na+].CCCCCCCCCCC(O)COCC([O-])=O UIGBPGNEWMRLGK-UHFFFAOYSA-M 0.000 description 1
- DONVGTHTQJQEDC-UHFFFAOYSA-M sodium;2-(2-oxopentadecylamino)acetate Chemical compound [Na+].CCCCCCCCCCCCCC(=O)CNCC([O-])=O DONVGTHTQJQEDC-UHFFFAOYSA-M 0.000 description 1
- KHCOJQDJOCNUGV-UHFFFAOYSA-M sodium;2-[methyl(tetradecanoyl)amino]acetate Chemical compound [Na+].CCCCCCCCCCCCCC(=O)N(C)CC([O-])=O KHCOJQDJOCNUGV-UHFFFAOYSA-M 0.000 description 1
- LOBXNKKFDKXXQW-UHFFFAOYSA-M sodium;3-[dodecanoyl(methyl)amino]propanoate Chemical compound [Na+].CCCCCCCCCCCC(=O)N(C)CCC([O-])=O LOBXNKKFDKXXQW-UHFFFAOYSA-M 0.000 description 1
- QKHBMQWPOUUMQZ-BDQAORGHSA-M sodium;hydron;(2s)-2-(octadecanoylamino)pentanedioate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC(=O)N[C@H](C(O)=O)CCC([O-])=O QKHBMQWPOUUMQZ-BDQAORGHSA-M 0.000 description 1
- 229940075554 sorbate Drugs 0.000 description 1
- 229940032094 squalane Drugs 0.000 description 1
- 229940012831 stearyl alcohol Drugs 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- 229960002663 thioctic acid Drugs 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- FGMPLJWBKKVCDB-UHFFFAOYSA-N trans-L-hydroxy-proline Natural products ON1CCCC1C(O)=O FGMPLJWBKKVCDB-UHFFFAOYSA-N 0.000 description 1
- QURCVMIEKCOAJU-UHFFFAOYSA-N trans-isoferulic acid Natural products COC1=CC=C(C=CC(O)=O)C=C1O QURCVMIEKCOAJU-UHFFFAOYSA-N 0.000 description 1
- 239000004474 valine Substances 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 235000019871 vegetable fat Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 235000019155 vitamin A Nutrition 0.000 description 1
- 239000011719 vitamin A Substances 0.000 description 1
- 235000019156 vitamin B Nutrition 0.000 description 1
- 239000011720 vitamin B Chemical group 0.000 description 1
- 235000019154 vitamin C Nutrition 0.000 description 1
- 239000011718 vitamin C Substances 0.000 description 1
- 235000019166 vitamin D Nutrition 0.000 description 1
- 239000011710 vitamin D Substances 0.000 description 1
- 150000003710 vitamin D derivatives Chemical class 0.000 description 1
- 235000019165 vitamin E Nutrition 0.000 description 1
- 229940046009 vitamin E Drugs 0.000 description 1
- 239000011709 vitamin E Substances 0.000 description 1
- 235000019168 vitamin K Nutrition 0.000 description 1
- 239000011712 vitamin K Substances 0.000 description 1
- 150000003721 vitamin K derivatives Chemical class 0.000 description 1
- 229940045997 vitamin a Drugs 0.000 description 1
- 229940046008 vitamin d Drugs 0.000 description 1
- 150000003722 vitamin derivatives Chemical class 0.000 description 1
- 229940046010 vitamin k Drugs 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 229930007845 β-thujaplicin Natural products 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/36—Carboxylic acids; Salts or anhydrides thereof
- A61K8/361—Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/04—Dispersions; Emulsions
- A61K8/046—Aerosols; Foams
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/36—Carboxylic acids; Salts or anhydrides thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- A61K8/817—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Compositions or derivatives of such polymers, e.g. vinylimidazol, vinylcaprolactame, allylamines (Polyquaternium 6)
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
- A61K8/86—Polyethers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
- A61Q19/10—Washing or bathing preparations
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
- A61K2800/26—Optical properties
- A61K2800/262—Transparent; Translucent
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/54—Polymers characterized by specific structures/properties
- A61K2800/542—Polymers characterized by specific structures/properties characterized by the charge
- A61K2800/5426—Polymers characterized by specific structures/properties characterized by the charge cationic
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/59—Mixtures
- A61K2800/591—Mixtures of compounds not provided for by any of the codes A61K2800/592 - A61K2800/596
Definitions
- the present invention relates to a liquid skin cleanser composition.
- liquid skin cleansing compositions such as hand soaps and body soaps are required to have good foam performance such as foam retention, to impart smoothness to the skin during rinsing, and to soften the skin after drying with a towel. It is desired that the skin feels good in use, such as imparting elasticity and not giving a tight feeling to the skin after drying with a towel.
- foam performance such as foam retention
- smoothness to impart smoothness to the skin during rinsing
- the skin feels good in use, such as imparting elasticity and not giving a tight feeling to the skin after drying with a towel.
- cleaning tools such as nylon towels and cotton towels
- the body soap that comes out in foam which is in increasing demand in recent years, is used with cleaning tools.
- there is a problem that the compatibility between foam retention and low-temperature stability is not satisfactory.
- Liquid skin cleansing compositions containing, for example, a fatty acid salt and a cationic polymer having a structural unit derived from dimethyldiallylammonium chloride have been proposed in order to provide a good feel during use (for example, Patent Document 1 , 2, etc.).
- the liquid skin cleanser composition proposed above is not satisfactory in terms of foam retention when lathered with a cleansing tool such as a nylon towel or cotton towel, skin elasticity after drying with a towel, and low-temperature stability. There was a problem.
- liquid skin cleansing compositions containing nonionic surfactants such as polyoxyethylene alkyl ethers and fatty acid monoethanolamides have been proposed (for example, see Patent Document 3).
- nonionic surfactants such as polyoxyethylene alkyl ethers and fatty acid monoethanolamides
- Patent Document 3 the proposed liquid skin cleansing composition has a problem that the skin elasticity and low-temperature stability after drying with a towel are not satisfactory.
- the object of the present invention is to solve the above-mentioned problems in the past and to achieve the following objects. That is, the present invention provides a liquid that has excellent foam retention, does not give a tight feeling to the skin after towel-drying, provides good skin smoothness during rinsing and good skin elasticity after towel-drying, and is excellent in low-temperature stability. An object of the present invention is to provide a skin cleanser composition.
- the above wherein the mass ratio of the content of the component (A) to the content of the component (C) [(A)/(C)] is 15 to 100, and the liquid skin is filled in a former container.
- the cleansing agent composition should have excellent foam retention, no tight feeling on the skin after drying with a towel, good smoothness of the skin during rinsing, good elasticity of the skin after drying with a towel, and excellent low-temperature stability. I found
- the present invention is based on the findings of the present inventors, and means for solving the above problems are as follows. Namely ⁇ 1> (A) an anionic surfactant containing at least one selected from (a1) palmitate and (a2) stearate; (B) at least one cationic polymer selected from dimethyldiallylammonium chloride polymers and dimethyldiallylammonium chloride-acrylic acid copolymers; (C) polyethylene glycol having an average molecular weight of 190 to 630; contains The content of the component (A) is 10% by mass to 25% by mass, The molar ratio of structural units derived from dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer of the component (B) is 40 mol% or more, The mass ratio of the content of the component (A) to the content of the component (C) [(A)/(C)] is 15 to 100, The liquid skin cleanser composition is filled in a foamer container.
- Mass ratio of the total content of the (a1) palmitate and the (a2) stearate to the content of the component (A) [((a1) + (a2))/(A)] is 0.1 to 0.5.
- the content of the component (B) is 0.2% by mass to 0.8% by mass
- the content of the component (C) is 0.2% by mass to 0.8% by mass
- the content of the component (D) is 0.05% by mass to 0.3% by mass
- the liquid skin cleanser composition according to any one of ⁇ 1> to ⁇ 3> above.
- the liquid skin cleanser composition of the present invention contains (A) an anionic surfactant, (B) a cationic polymer, (C) polyethylene glycol, and further contains (D) a copolymer. is preferable, and further contains other components as necessary.
- the anionic surfactant as the component (A) is mainly contained to improve foam retention.
- foam retention means that the foam is maintained without disappearing when the cleaning tool is used.
- the cleaning tool is not particularly limited as long as it is used for cleaning the skin, and can be appropriately selected according to the purpose. Examples thereof include nylon towels and cotton towels.
- the anionic surfactant of component (A) includes (a1) palmitate (hereinafter sometimes referred to as "(a1) component”) and (a2) stearate (hereinafter referred to as “(a2) component”). may be referred to as) contains at least one selected from.
- the anionic surfactant of the component (A) is not particularly limited as long as it contains at least one selected from the (a1) palmitate and the (a2) stearate. Examples include salts of higher fatty acids other than the components (a1) and (a2), polyoxyethylene (POE) alkyl ether sulfates, ether carboxylates, and amino acid-based surfactants. . These may be used individually by 1 type, and may use 2 or more types together. Among these, higher fatty acid salts and POE alkyl ether sulfates are preferred, and higher fatty acid salts are more preferred.
- the higher fatty acid salt in the component (A) is not particularly limited as long as it contains at least one selected from the (a1) palmitate and the (a2) stearate, depending on the purpose. Examples thereof include laurate and myristate. These may be used individually by 1 type, and may use 2 or more types together. Among these, higher fatty acid salts containing all of palmitate, stearate, laurate, and myristate are preferred from the viewpoint of foam retention and skin elasticity after towel-drying.
- the counter ion of the higher fatty acid salt is not particularly limited and can be appropriately selected depending on the intended purpose.
- examples thereof include alkali metal salts, amine salts and amino acid salts.
- the alkali metal salt is not particularly limited and can be appropriately selected depending on the intended purpose. Examples thereof include sodium salt and potassium salt.
- the amine salt is not particularly limited and can be appropriately selected depending on the purpose. Examples include ammonium salt; monoethanolamine salt, diethanolamine salt, triethanolamine salt, and alkanolamine salts such as -amino-2-methylpropanediol.
- the amino acid salt is not particularly limited and can be appropriately selected depending on the intended purpose. Examples thereof include lysine salts and arginine salts. Among these, alkali metal salts are preferred, and potassium salts are particularly preferred.
- higher fatty acid salt an appropriately synthesized one may be used, or a commercially available product may be used.
- Commercially available higher fatty acid salts include, for example, trade names of Nonsal PK-1 (potassium palmitate, manufactured by NOF Corporation), Nonsal SK-1 (potassium stearate, manufactured by NOF Corporation), and NIKKOL Laurin.
- Acid potassium LK-120 (potassium laurate, manufactured by Nikko Chemicals Co., Ltd.), NIKKOL potassium myristate MK-140 (potassium myristate, manufactured by Nikko Chemicals Co., Ltd.), Thai soap MNK-40 (potassium coconut oil fatty acid, potassium myristate combination liquid, manufactured by Nikko Chemicals Co., Ltd.) and the like.
- the higher fatty acid salt can be blended as a higher fatty acid salt, but the higher fatty acid and the counterion salt such as potassium hydroxide are separately added to a blending tank and neutralized. may be used as a higher fatty acid salt.
- the higher fatty acid used for preparing the higher fatty acid salt may be appropriately synthesized or a commercially available product.
- commercially available higher fatty acids include NAA (registered trademark)-160 (palmitic acid, manufactured by NOF Corporation) and NAA (registered trademark)-180 (stearic acid, manufactured by NOF Corporation).
- NAA (registered trademark)-122 lauric acid, manufactured by NOF Corporation
- NAA (registered trademark)-142 myristic acid, manufactured by NOF Corporation
- the content of the (a1) palmitate is not particularly limited and can be appropriately selected depending on the purpose, but is preferably 1% by mass to 10% by mass relative to the total amount of the liquid skin cleanser composition. , 3% by mass to 9% by mass.
- the content of the (a2) stearate is not particularly limited and can be appropriately selected depending on the intended purpose. is preferred, and 0.2% by mass to 1% by mass is more preferred.
- the content of the laurate is not particularly limited and can be appropriately selected depending on the intended purpose. % to 10% by mass is more preferable.
- the content of the myristate salt is not particularly limited and can be appropriately selected depending on the intended purpose. % to 14% by mass is more preferred.
- the polyoxyethylene alkyl ether sulfate in the component (A) is not particularly limited and can be appropriately selected depending on the intended purpose.
- the said polyoxyethylene alkyl ether sulfate may be used individually by 1 type, and may use 2 or more types together.
- R 1 represents an alkyl group, and the alkyl group portion preferably has 10 to 14 carbon atoms.
- n represents the average added mole number of ethylene oxide (E.O.), and the average added mole number of ethylene oxide is preferably 1 to 5.
- X represents an alkali metal or ammonium.
- the alkali metal is not particularly limited and can be appropriately selected depending on the intended purpose. Examples thereof include sodium and potassium.
- polyoxyethylene alkyl ether sulfate examples include polyoxyethylene (1) sodium lauryl ether sulfate, polyoxyethylene (2) sodium lauryl ether sulfate (also known as POE (2) sodium laureth sulfate), polyoxyethylene (3) sodium lauryl ether sulfate (also known as POE (3) sodium laureth sulfate), polyoxyethylene (4) sodium lauryl ether sulfate, polyoxyethylene (5) sodium lauryl ether sulfate, polyoxyethylene (3) alkyl (C12 , 13) sodium ether sulfate, polyoxyethylene (2) ammonium lauryl ether sulfate, polyoxyethylene (3) ammonium lauryl ether sulfate, and the like.
- the numerical value in said () represents the average addition mole number (n) of ethylene oxide (E.O.).
- polyoxyethylene alkyl ether sulfate an appropriately synthesized one may be used, or a commercially available product may be used.
- examples of commercially available polyoxyethylene alkyl ether sulfates include Texapon (registered trademark) N70 (manufactured by BASF, polyoxyethylene (2) sodium lauryl ether sulfate) and Shinoline SPE-1250. (manufactured by New Japan Chemical Co., Ltd., polyoxyethylene (2) sodium lauryl ether sulfate) and the like.
- the ether carboxylate in the component (A) is not particularly limited and can be appropriately selected depending on the intended purpose. is mentioned.
- the ether carboxylates may be used singly or in combination of two or more.
- R 2 is a linear or branched alkyl group or alkenyl group having 5 to 23 carbon atoms, or a linear or branched alkyl group or alkenyl group having 5 to 23 carbon atoms
- the number of carbon atoms in the R 2 moiety representing a phenyl group substituted with a group is preferably 10 to 14.
- R 3 may be the same or different and represents an alkylene group having 2 to 4 carbon atoms, preferably 2 carbon atoms.
- o represents an average added mole number of 1 to 20 alkylene oxide, and the average added mole number of the alkylene oxide is preferably 1 to 5.
- M1 represents a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, or a basic amino acid.
- ether carboxylate represented by the general formula (A2) or (A3) include polyoxyethylene (3) sodium lauryl ether acetate, polyoxyethylene (4) potassium lauryl ether acetate, and sodium lauryl glycol acetate. etc.
- the numerical value in said () represents the average added mole number (o) of alkylene oxide.
- the ether carboxylate may be appropriately synthesized or may be a commercially available product.
- Commercially available products of the ether carboxylate include, for example, trade names Enagicol EC-30 (manufactured by Lion Specialty Chemicals Co., Ltd., polyoxyethylene (3) sodium lauryl ether acetate), Beaulite LCA-25F (poly Oxyethylene (3) Sodium Lauryl Ether Acetate), Beaulite LCA-30D (Polyoxyethylene (3) Sodium Lauryl Ether Acetate), Beaulite LCA-H (Polyoxyethylene (4) Lauryl Ether Acetate), Beaulite LCA- 25NH (laureth-4 carboxylic acid), Beaulite SHAA (sodium lauryl glycol carboxylate), Beaulite LCA (polyoxyethylene (3) sodium lauryl ether acetate) (manufactured by Sanyo Chemical Industries, Ltd.), Kao Akipo RLM-45NV (polyoxyethylene (4.5) sodium lauryl ether acetate), Kaohakipo RLM-100
- amino acid-based surfactant in the component (A) is not particularly limited and can be appropriately selected depending on the intended purpose. Examples thereof include compounds represented by the following general formula (A4). .
- the amino acid-based surfactants may be used singly or in combination of two or more.
- R 4 is substituted with a linear or branched alkyl or alkenyl group having 5 to 23 carbon atoms, or a linear or branched alkyl or alkenyl group having 5 to 23 carbon atoms. indicates a phenyl group.
- the number of carbon atoms in the R 4 moiety is preferably 8-18.
- R 5 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.
- R 6 and R 7 may be the same or different and represent a hydrogen atom or —(CH 2 ) m —COOM 2 .
- n and n may be the same or different and represent numbers from 0 to 20.
- M 1 and M 2 may be the same or different and represent a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, or a basic amino acid.
- the amino acid structure of the hydrophilic portion of the amino acid-based surfactant is not particularly limited and can be appropriately selected depending on the purpose, but glycine, glutamic acid, and methylalanine are preferred.
- amino acid-based surfactant represented by the general formula (A4) include N-acyl-glycine such as N-cocoyl-glycine potassium (N-coconut fatty acid acylglycine potassium) and salts thereof; N-acyl-N-carboxyethyl-glycine such as sodium myristoyl-N-carboxyethyl-glycine and salts thereof; sodium N-myristoyl-L-glutamate, potassium N-myristoyl-L-glutamate, N-coconut fatty acid acyl- Potassium L-glutamate, sodium N-palm fatty acid acyl-L-glutamate, N-acylglutamic acid and its salts such as sodium N-stearoyl-L-glutamate; N-lauroyl-N-methyl- ⁇ -alanine potassium, etc. .
- N-acyl-glycine such as N-cocoyl-glycine potassium (N-coconut fatty acid acy
- amino acid-based surfactant an appropriately synthesized one may be used, or a commercially available product may be used.
- Commercially available amino acid-based surfactants include, for example, trade names of Amylite (registered trademark) GCK-11 (potassium N-coconut oil fatty acid acylglycine) and Amylite (registered trademark) GCK-12K (N-coconut oil Potassium fatty acid acylglycinate), Amylite (registered trademark) GCS-12K (sodium N-coconut acylglycinate), Amylite (registered trademark) GCS-11 (sodium N-coconut acylglycinate), Amisoft (registered trademark) CS -11 (N-myristoyl-L-sodium glutamate), Amisoft (registered trademark) CS-22 (N-coconut fatty acid acyl-L-glutamate sodium), Amisoft (registered trademark) LS-11 (N-lauroyl-L-
- the content of the anionic surfactant as component (A) is 10% by mass or more, based on the total amount of the liquid skin cleanser composition, from the viewpoints of foam retention, skin elasticity after towel-drying, and low-temperature stability. 25% by weight, preferably 12% to 20% by weight. If the content of the component (A) is less than 10% by mass, the foam retention is insufficient, and if it exceeds 25% by mass, the elasticity of the skin after drying with a towel and the feeling of stability at low temperature are insufficient.
- the mass ratio of the total content of the (a1) palmitate and the (a2) stearate to the content of the component (A) [((a1) + (a2)) / (A)] is not particularly limited and can be appropriately selected according to the intended purpose. 15 to 0.3 is more preferred.
- the [((a1) + (a2)) / (A)] is 0.1 or more, the foam retention is good, and when it is 0.5 or less, the elasticity of the skin after towel drying and low temperature Good stability.
- the cationic polymer as the component (B) is at least one selected from dimethyldiallylammonium chloride polymer and dimethyldiallylammonium chloride-acrylic acid copolymer, and is mainly used to improve skin elasticity after towel drying. and is included to improve skin smoothness upon rinsing.
- the dimethyldiallylammonium chloride-acrylic acid copolymer in the component (B) is represented by the following general formula (B1).
- the molar ratio of structural units derived from dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer of the component (B) is 65 mol% or more from the viewpoint of elasticity of the skin after drying with a towel. Preferably, 96 mol % or more is more preferable.
- the dimethyldiallylammonium chloride-acrylic acid copolymer may be used alone or in combination of two or more.
- the molar ratio of the structural units in the dimethyldiallylammonium chloride-acrylic acid copolymer of the component (B) can be determined by nuclear magnetic resonance (NMR) measurement under the following measurement conditions.
- NMR nuclear magnetic resonance
- the weight-average molecular weight of the cationic polymer of component (B) is not particularly limited and may be appropriately selected depending on the intended purpose. ,000 is more preferred.
- the weight-average molecular weight of the cationic polymer of the component (B) is determined, for example, by the SEC-MALLS-RI system (measurement conditions: column: TSKgel ⁇ series ⁇ -M column 30 cm manufactured by Tosoh Corporation, solvent: sodium nitrate 0.3 M aqueous solution). can be measured in
- the viscosity at 25° C. of a solution of the cationic polymer (B) having a solid content of 30% by mass to 44% by mass is preferably 10 mPa ⁇ s to 15,000 mPa ⁇ s, more preferably 20 mPa ⁇ s to 12,000 mPa ⁇ s. is more preferred.
- the viscosity can be measured, for example, using a Brookfield viscometer LVF (manufactured by Brookfield).
- the cationic polymer of component (B) may be appropriately synthesized or may be a commercially available product.
- Examples of commercially available cationic polymers of component (B) include the following under trade names.
- MERQUAT 100 component name: dimethyldiallylammonium chloride polymer, manufactured by Nippon Lubrizol Co., Ltd., viscosity at 25 ° C. with a solid content of 39% to 44% by mass: 8,000 mPa s to 12,000 mPa s , weight average molecular weight: 150,000).
- the viscosity was measured using a Brookfield viscometer LVF (manufactured by Brookfield) at 25° C. with spindle No. 3 rotors can be used and measurements can be made under the conditions of 6 revolutions/minute.
- Marquat 106 component name: dimethyl diallyl ammonium chloride polymer, manufactured by Nippon Lubrizol Co., Ltd., viscosity at 25 ° C. with a solid content of 30% to 36% by mass: 20 mPa s to 65 mPa s, weight average molecular weight 15,000 ). The viscosity was measured using a Brookfield viscometer LVF (manufactured by Brookfield) at 25° C. with spindle No. No. 1 rotor can be used and measured at 60 revolutions/minute.
- LVF Brookfield viscometer
- the viscosity was measured using a Brookfield viscometer LVF (manufactured by Brookfield) at 25° C. with spindle No. 4 rotors can be used and measured at 60 revolutions/minute.
- the viscosity was measured using a Brookfield viscometer LVF (manufactured by Brookfield) at 25° C. with spindle No. 4 rotors can be used and measured at 30 revolutions/minute.
- Marquat 100, Marquat 280, and Marquat 295 are preferable from the standpoint of skin elasticity after drying with a towel.
- the content of the cationic polymer of component (B) is not particularly limited and can be appropriately selected according to the purpose. , the content is preferably 0.1% by mass to 1% by mass, more preferably 0.2% by mass to 0.8% by mass, relative to the total amount of the liquid skin cleanser composition.
- the content of component (B) is 0.1% by mass or more, the elasticity of the skin after towel-drying is good, and when it is 1% by mass or less, the skin feels tight after towel-drying. good.
- Polyethylene glycol as component (C) is polyethylene glycol having an average molecular weight of 190 to 630, and is mainly contained to improve skin elasticity and low-temperature stability after towel-drying.
- the average molecular weight of the component (C) exceeds 630, the elasticity of the skin after drying with a towel is reduced.
- the average molecular weight can be measured by the average molecular weight test described in Standards for Quasi-drug Ingredients 2006.
- polyethylene glycol of component (C) examples include polyethylene glycol 200 (average molecular weight 190 to 210), polyethylene glycol 300 (average molecular weight 280 to 320), polyethylene glycol 400 (average molecular weight 380 to 420), polyethylene glycol 600 ( average molecular weight 570-630), and the like. These may be used individually by 1 type, and may use 2 or more types together. Among these, polyethylene glycol 400 (average molecular weight: 380 to 420) is preferable as the component (C) in terms of elasticity of the skin after drying with a towel and stability at low temperatures. Depending on the product, for example, polyethylene glycol 200 may have a # between the polyethylene glycol and the numerical value, such as polyethylene glycol #200.
- the content of polyethylene glycol as component (C) is not particularly limited and can be appropriately selected according to the purpose. It is preferably 0.1% by mass to 1.0% by mass, more preferably 0.2% by mass to 0.8% by mass, relative to the total amount of the composition. When the content of component (C) is 0.1% by mass or more, the elasticity and low-temperature stability of the skin after drying with a towel are good, and when it is 1.0% by mass or less, low-temperature stability is good. Good.
- Mass ratio [(A)/(C)] The mass ratio [(A)/(C)] of the content of component (A) to the content of component (C) is determined from the viewpoint of foam retention, skin elasticity after towel drying, and low temperature stability. , 15-100, preferably 20-40. If the mass ratio [(A)/(C)] is less than 15, the foam retention is insufficient, and if it exceeds 100, the elasticity and low-temperature stability of the skin after drying with a towel are insufficient.
- ⁇ (D) a copolymer represented by the following general formula (1)>
- the copolymer of component (D) is preferably contained in order to improve the smoothness of the skin during rinsing.
- the copolymer of component (D) is a copolymer represented by the following general formula (1).
- the n is preferably 0 to 34
- the m is preferably 24 to 31
- the z is preferably 35 to 76.
- the molar ratio of each structural unit in the copolymer of component (D) can be determined by nuclear magnetic resonance (NMR) measurement under the following measurement conditions.
- NMR nuclear magnetic resonance
- Solvent heavy water ( D2O)
- Measuring instrument JNM-LA300 (300 MHz, manufactured by JEOL Ltd.)
- the weight-average molecular weight of the copolymer of component (D) is not particularly limited and may be appropriately selected depending on the intended purpose. , 600,000 is more preferred.
- the weight-average molecular weight of the copolymer of component (D) is determined, for example, by the SEC-MALLS-RI system (measurement conditions: column: TSKgel ⁇ series ⁇ -M column 30 cm manufactured by Tosoh Corporation, solvent: sodium nitrate 0.3 M aqueous solution). can be measured in
- the viscosity at 25° C. of the copolymer solution having a solid content of 8% by mass to 45% by mass in the copolymer of component (D) is not particularly limited, and can be appropriately selected depending on the purpose. , 1,500 mPa ⁇ s to 16,000 mPa ⁇ s.
- the viscosity can be measured, for example, using a Brookfield viscometer LVF (manufactured by Brookfield).
- copolymer of component (D) an appropriately synthesized one may be used, or a commercially available product may be used.
- the commercially available products include the following.
- Marquat 550PR component name: dimethylallylammonium chloride-acrylamide copolymer, manufactured by Lubrizol, solid content 8.8% to 9.8% by mass at 25 ° C.
- the viscosity was measured using a Brookfield viscometer LVF (manufactured by Brookfield) at 25° C. with spindle No. 4 rotors can be used and measurement can be made under the condition of 10 revolutions/minute.
- the viscosity was measured using a Brookfield viscometer LVF (manufactured by Brookfield) at 25° C. with spindle No. 4 rotors can be used and measurement can be made under the condition of 10 revolutions/minute.
- the viscosity was measured using a Brookfield viscometer LVF (manufactured by Brookfield) at 25° C. with spindle No. 4 rotors and 30 rotations/minute.
- the viscosity is determined using a Brookfield viscometer LVF (manufactured by Brookfield). Spindle no. No. 5 rotors can be used and measurements can be made under conditions of 30 revolutions/minute.
- the viscosity was measured using a Brookfield viscometer LVF (manufactured by Brookfield) at 25° C. with spindle No. 3 rotors can be used and measurement can be made under the condition of 10 revolutions/minute.
- Marquat 740 is preferable as the copolymer of the component (D) in terms of smoothness of the skin during rinsing.
- the content of the copolymer of component (D) is 0.01 based on the total amount of the liquid skin cleanser composition, from the viewpoint of the smoothness of the skin during rinsing and the firmness of the skin after drying with a towel. % by mass to 0.5% by mass is preferable, and 0.05% by mass to 0.3% by mass is more preferable.
- the content of component (D) is 0.01% by mass or more, smoothness of the skin during rinsing is good, and when it is 0.5% by mass or less, the skin feels tight after drying with a towel. is good.
- the liquid skin cleanser composition in addition to the components (A), (B), (C), and (D), it is necessary to the extent that the effects of the present invention are not impaired.
- Other ingredients can be added depending on the requirements.
- the other components include surfactants other than the component (A), water-soluble polymers other than the components (B) and (D), oils, silicones, alcohols, lanolin derivatives, and proteins.
- drugs e.g., vitamins, etc.
- moisturizers e.g., vitamins, etc.
- bactericides e.g., bactericides
- preservatives pH adjusters, antioxidants, sequestering agents
- UV absorbers/scatterers animal and plant extracts or their derivatives
- chelating agents UV absorbers - Scattering agents, amino acids, dyes, fragrances, pigments, inorganic powders, clay minerals, water-insoluble polymer compound powders, and the like.
- chelating agents e.g., UV absorbers - Scattering agents, amino acids, dyes, fragrances, pigments, inorganic powders, clay minerals, water-insoluble polymer compound powders, and the like.
- UV absorbers - Scattering agents amino acids, dyes, fragrances, pigments, inorganic powders, clay minerals, water-insoluble polymer compound powders, and the like.
- oils and fats such as castor oil, olive oil, cacao oil, hardened palm oil, camellia oil, coconut oil, Japan wax, jojoba oil, grapeseed oil, avocado oil, and ester compounds thereof; mink oil, Animal oils and fats such as egg yolk oil; Waxes such as beeswax, whale wax, lanolin, hydrogenated lanolin, carnauba wax, and candelilla wax; Hydrocarbons such as liquid paraffin, squalane, microcrystalline wax, ceresin wax, paraffin wax, and petrolatum natural and synthetic fatty acids such as oleic acid, isostearic acid, behenic acid; glycerol tri-2-ethylhexanoate, 2-ethylhexyl stearate, butyl stearate, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, and esters such as octyld
- alcohols include lower and higher alcohols, and specific examples thereof include natural and synthetic higher alcohols such as cetyl alcohol, oleyl alcohol, stearyl alcohol, hexyldecanol, octyldodecanol, and lauryl alcohol. mentioned. These may be used individually by 1 type, and may use 2 or more types together.
- the content of the alcohol is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected according to the purpose. % to 3% by mass is preferred.
- the moisturizing agent examples include isoprene glycol, 1,2-pentanediol, diethylene glycol, diethylene glycol monoalkyl ether, polypropylene glycol, polypropylene glycol, hydrogenated castor oil (30 E.O.), diglycerin, triglycerin, polyglycerin, and the like. is mentioned. These may be used individually by 1 type, and may use 2 or more types together.
- the content of the alcohol is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected according to the purpose. % to 10% by mass is preferred.
- preservative examples include benzoate, sorbate, dehydroacetate, paraoxybenzoic acid ester, 2,4,4'-trichloro-2'-hydroxydiphenyl ether, 3,4,4'-trichlorocarbaniate.
- Lid benzalkonium chloride, hinokitiol, resorcinol, methylchloroisothiazolinone/methylisothiazolinone liquid (trade name: Kason CG, manufactured by Rohm and Haas Japan), salicylic acid, pentanediol, phenoxyethanol, ethanol, etc. mentioned. These may be used individually by 1 type, and may use 2 or more types together.
- the content of the antiseptic is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected according to the purpose. % to 1% by weight is preferred.
- antioxidants examples include dibutylhydroxytoluene, butylhydroxyanisole, and ascorbic acid. These may be used individually by 1 type, and may use 2 or more types together.
- the content of the antioxidant is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected according to the purpose. 1% by mass to 1% by mass is preferred.
- the chelating agent examples include disodium edetate, ethylenediaminetetraacetate, hexametaphosphate, and gluconic acid. These may be used individually by 1 type, and may use 2 or more types together.
- the content of the chelating agent is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected according to the purpose. % to 1% by weight is preferred.
- pH adjuster examples include sodium hydroxide, potassium hydroxide, citric acid, hydrochloric acid, succinic acid, triethanolamine, aqueous ammonia, triisopropanolamine, phosphoric acid, and glycolic acid. These may be used individually by 1 type, and may use 2 or more types together.
- ultraviolet absorbing/scattering agent examples include 2-hydroxy-4-methoxybenzophenone, octyldimethyl para-aminobenzoate, ethylhexyl para-methoxycinamate, titanium oxide, kaolin, and talc. These may be used individually by 1 type, and may use 2 or more types together.
- vitamins examples include vitamin A, vitamin B group, vitamin C, vitamin D, vitamin E, vitamin F, vitamin K, vitamin P, vitamin U, carnitine, ferulic acid, ⁇ -oryzanol, ⁇ -lipoic acid, orotic acid and derivatives thereof; These may be used individually by 1 type, and may use 2 or more types together.
- the content of the vitamins is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected according to the purpose. % by mass to 0.5% by mass is preferred.
- amino acids examples include glycine, alanine, valine, leucine, isoleucine, phenylalanine, tryptophan, cystine, cysteine, methionine, proline, hydroxyproline, aspartic acid, glutamic acid, arginine, histidine, lysine and derivatives thereof. . These may be used individually by 1 type, and may use 2 or more types together.
- the content of the amino acids is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected according to the purpose. % by mass to 0.5% by mass is preferred.
- water-insoluble polymer compound powder examples include nylon and polyethylene. These may be used individually by 1 type, and may use 2 or more types together.
- the pH of the liquid skin cleanser composition at 25° C. is not particularly limited and may be appropriately selected depending on the intended purpose. more preferred.
- the pH can be measured, for example, using a glass electrode color hydrogen ion concentration indicator HM-30R (Electrode type GST-5721 manufactured by Toa DKK Co., Ltd.).
- the viscosity of the liquid skin cleanser composition at 25° C. is not particularly limited and can be appropriately selected according to the container to be used. • s is more preferred.
- the liquid skin cleanser composition is heated under the temperature conditions used.
- the viscosity of the material is preferably 30 mPa ⁇ s or less, more preferably 25 mPa ⁇ s or less.
- the viscosity is measured using, for example, a BM type viscometer (manufactured by Tokyo Keiki Co., Ltd.) at a sample temperature of 25° C., a number of revolutions of 60 rpm, No. It can be measured by measuring the viscosity after 1 minute with No. 1 rotor.
- a BM type viscometer manufactured by Tokyo Keiki Co., Ltd.
- the liquid skin cleansing composition is of the type that is filled in a foamer container and discharged in the form of foam.
- the foamer container is not particularly limited and can be appropriately selected from known foamer containers. Examples thereof include non-gas foam discharge containers and aerosol containers using a propellant and a pressure-resistant container. Among these, a non-gas foam discharge container is preferable.
- the non-gas type foam discharge container is not particularly limited as long as it can mix the liquid skin cleanser composition with air and discharge it in a foamed state, and can be appropriately selected according to the purpose.
- a squeeze foamer container in which foam can be discharged by manually squeezing the body of the bottle, and a pump foamer container in which foam can be discharged by pushing down the nozzle.
- a former container those manufactured by Yamato Seikan Co., Ltd., Yoshino Kogyosho Co., Ltd., or the like can be used. More specifically, as the former container, the former containers described in JP-A-7-315463, JP-A-8-230961, JP-A-2005-193972, etc. can be used.
- the non-gas type foam discharge container has a foam forming member, specifically, a porous membrane (preferably a plastic material such as nylon, polyester, polyolefin, etc.) for forming foam. and foam is formed by the liquid skin cleansing composition passing through the porous membrane.
- a foam forming member specifically, a porous membrane (preferably a plastic material such as nylon, polyester, polyolefin, etc.) for forming foam. and foam is formed by the liquid skin cleansing composition passing through the porous membrane.
- the mesh of the porous membrane is not particularly limited and can be appropriately selected depending on the purpose.
- the number of the porous membranes is not particularly limited and can be appropriately selected depending on the purpose, but from the viewpoint of improving foam performance, 2 to 4 are preferable.
- the method for producing the liquid skin cleanser composition is not particularly limited and may be appropriately selected depending on the intended purpose. Further, if necessary, the above component (D), the above other components, and purified water (blended as the remaining amount so that the total liquid skin cleansing composition is 100% by mass) can be mixed. Specifically, the component (A) is dissolved in purified water heated to 70° C. to 80° C., cooled to 40° C. or less, and then the component (B), the component (C), and necessary It can be produced by adding the component (D) and the other components according to the above.
- the liquid skin cleanser composition may be prepared using an apparatus.
- the device is not particularly limited and can be appropriately selected depending on the intended purpose.
- the stirring blade is not particularly limited and can be appropriately selected depending on the purpose. Examples thereof include propellers, turbines, and dispersers.
- the application site of the liquid skin cleanser composition is not particularly limited and can be appropriately selected according to the intended purpose.
- liquid skin cleanser composition is not particularly limited and can be appropriately selected according to the purpose. Smoothness and elasticity of the skin after towel-drying are good, and low-temperature stability is excellent. In particular, it can be suitably used as a body soap that is foamed with a cleaning tool such as a nylon towel or cotton towel.
- the content of each component described in Examples and Comparative Examples is shown in "% by mass", the total amount is 100% by mass, and all values are converted to pure content.
- the mass ratio [(C)/(A)] of the content (% by mass) of component (A) to the content (% by mass) of component (C) is rounded to the second decimal place, The following are listed up to the first place. Mass ratio of the total content (% by mass) of component (a1) (potassium palmitate) and component (a2) (potassium stearate) to the content of component (A) [((a1) + (a2))/ (A)] is rounded off to the second decimal place and described.
- Liquid skin cleansing compositions having compositions and contents shown in Tables 1 to 5 below were prepared according to the following method. Purified water is heated to 70 ° C. to 80 ° C. to dissolve the anionic surfactant of component (A), cooled to 40 ° C. or less, and the cationic polymer of component (B) or component (B) Cationized cellulose as a comparative component and polyethylene glycol as a component (C) or a comparative component of (C) were added. The purified water was used in an amount of 95% by mass of the finally obtained liquid skin cleanser composition.
- the common component potassium hydroxide is added to adjust the predetermined pH to 10.0, and then the common components lauramidopropyl betaine and propylene glycol are added. , and fragrance were added, and purified water was added so that the total amount was 100% by mass to obtain liquid skin cleanser compositions of Examples 1 to 11 and 19 to 32, and Comparative Examples 1 to 10.
- a propeller was used as a stirring blade, and stirring was performed using a three-one motor (HEIDON BL1200, manufactured by Shinto Kagaku Co., Ltd.). Further, the pH was measured at 25° C. using a pH meter (HM-30R, manufactured by TOA DKK).
- Examples 12-18 Liquid skin cleansing compositions having compositions and contents shown in Tables 2 and 3 below were prepared according to the following method.
- the anionic surfactant as component (A) was dissolved, and the cationic polymer as component (B) and polyethylene glycol as component (C) were dissolved. was added in the same manner as the method for preparing the liquid skin cleanser compositions of Examples 1 to 11 and 19 to 32, except that the copolymer of component (D) was also added. were obtained.
- ⁇ Precipitation of a large amount of crystals or solids is observed within 2 weeks
- Potassium laurate was prepared by neutralizing lauric acid (NAA-122, manufactured by NOF Corporation) with potassium hydroxide (manufactured by Asahi Glass Co., Ltd., liquid caustic potash).
- Potassium myristate was prepared by neutralizing myristic acid (NAA-142, manufactured by NOF Corporation) with potassium hydroxide (manufactured by Asahi Glass Co., Ltd., liquid caustic potash).
- Potassium palmitate was prepared by neutralizing palmitic acid (NAA-160, manufactured by NOF Corporation) with potassium hydroxide (liquid caustic potash, manufactured by Asahi Glass Co., Ltd.).
- Potassium stearate was prepared by neutralizing stearic acid (NAA-180, manufactured by NOF Corporation) with potassium hydroxide (liquid caustic potash, manufactured by Asahi Glass Co., Ltd.).
- the liquid skin cleanser composition can be suitably used in a foamer container, has excellent foam retention, does not give a tight feeling to the skin after drying with a towel, and smoothes the skin during rinsing and improves the skin after drying with a towel. Since it has good elasticity and excellent low-temperature stability, it can be used, for example, for body shampoo, body soap, facial cleansing foam, hand soap, foaming hand soap, cleansing foam, makeup remover, etc. Especially, nylon towels and cotton. It can be suitably used as a body soap that is foamed with a cleaning tool such as a towel.
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Abstract
Description
<1> (A)(a1)パルミチン酸塩及び(a2)ステアリン酸塩から選択される少なくとも1種を含有するアニオン性界面活性剤と、
(B)塩化ジメチルジアリルアンモニウム重合体、及び塩化ジメチルジアリルアンモニウム-アクリル酸共重合体から選択される少なくとも1種のカチオン性ポリマーと、
(C)平均分子量が190~630のポリエチレングリコールと、
を含有し、
前記(A)成分の含有量が、10質量%~25質量%であり、
前記(B)成分の塩化ジメチルジアリルアンモニウム-アクリル酸共重合体における塩化ジメチルジアリルアンモニウムに由来する構造単位のモル比が40モル%以上であり、
前記(C)成分の含有量に対する前記(A)成分の含有量の質量比[(A)/(C)]が、15~100であり、
フォーマー容器に充填されてなることを特徴とする液体皮膚洗浄剤組成物である。
<2> 更に、(D)下記一般式(1)で表される共重合体を含有する前記<1>に記載の液体皮膚洗浄剤組成物である。
<3> 前記(A)成分の含有量に対する前記(a1)パルミチン酸塩と前記(a2)ステアリン酸塩との合計含有量の質量比[((a1)+(a2))/(A)]が、0.1~0.5である前記<1>から<2>のいずれかに記載の液体皮膚洗浄剤組成物である。
<4> 前記(B)成分の含有量が、0.2質量%~0.8質量%であり、
前記(C)成分の含有量が、0.2質量%~0.8質量%であり、
前記(D)成分の含有量が、0.05質量%~0.3質量%
である前記<1>から<3>のいずれかに記載の液体皮膚洗浄剤組成物である。
本発明の液体皮膚洗浄剤組成物は、(A)アニオン性界面活性剤と、(B)カチオン性ポリマーと、(C)ポリエチレングリコールと、を含有し、更に(D)共重合体を含有することが好ましく、更に必要に応じて、その他の成分を含有する。
前記(A)成分としてのアニオン性界面活性剤は、主に、泡持ちを向上させるために含有される。
なお、本明細書において「泡持ち」とは、洗浄用具を使用した際に泡が消えずに維持することを意味する。前記洗浄用具としては、皮膚の洗浄に用いられるものであれば、特に制限はなく、目的に応じて適宜選択することができ、例えば、ナイロンタオル、綿タオルなどが挙げられる。
前記(A)成分のアニオン性界面活性剤は、前記(a1)パルミチン酸塩及び前記(a2)ステアリン酸塩から選択される少なくとも1種を含有する限り、特に制限はなく、目的に応じて適宜選択することができ、例えば、前記(a1)成分及び前記(a2)成分以外の高級脂肪酸塩、ポリオキシエチレン(POE)アルキルエーテル硫酸塩、エーテルカルボン酸塩、アミノ酸系界面活性剤などが挙げられる。これらは、1種単独で使用してもよいし、2種以上を併用してもよい。これらの中でも、高級脂肪酸塩、POEアルキルエーテル硫酸塩が好ましく、高級脂肪酸塩がより好ましい。
前記(A)成分の中の前記高級脂肪酸塩としては、前記(a1)パルミチン酸塩及び前記(a2)ステアリン酸塩から選択される少なくとも1種を含有する限り、特に制限はなく、目的に応じて適宜選択することができ、例えば、ラウリン酸塩、ミリスチン酸塩などが挙げられる。これらは、1種単独で使用してもよいし、2種以上を併用してもよい。これらの中でも、泡持ち及びタオルドライ後の肌の弾力の点から、パルミチン酸塩、ステアリン酸塩、ラウリン酸塩、及びミリスチン酸塩をいずれも含む高級脂肪酸塩が好ましい。
前記アルカリ金属塩としては、特に制限はなく、目的に応じて適宜選択することができ、例えば、ナトリウム塩、カリウム塩などが挙げられる。
前記アミン塩としては、特に制限はなく、目的に応じて適宜選択することができ、例えば、アンモニウム塩;モノエタノールアミン塩、ジエタノールアミン塩、トリエタノールアミン塩、2-アミノ-2-メチルプロパノール、2-アミノ-2-メチルプロパンジオール等のアルカノールアミン塩などが挙げられる。
前記アミノ酸塩としては、特に制限はなく、目的に応じて適宜選択することができ、例えば、リジン塩、アルギニン塩などが挙げられる。
これらの中でも、アルカリ金属塩が好ましく、カリウム塩が特に好ましい。
前記高級脂肪酸塩の市販品としては、例えば、商品名で、ノンサールPK-1(パルミチン酸カリウム、日油株式会社製)、ノンサールSK-1(ステアリン酸カリウム、日油株式会社製)、NIKKOL ラウリン酸カリLK-120(ラウリン酸カリウム、日光ケミカルズ株式会社製)、NIKKOL ミリスチン酸カリMK-140(ミリスチン酸カリウム、日光ケミカルズ株式会社製)、タイソープ MNK-40(ヤシ油脂肪酸カリウム・ミリスチン酸カリウム配合液体、日光ケミカルズ株式会社製)などが挙げられる。
前記高級脂肪酸の市販品としては、例えば、商品名で、NAA(登録商標)-160(パルミチン酸、日油株式会社製)、NAA(登録商標)-180(ステアリン酸、日油株式会社製)、NAA(登録商標)-122(ラウリン酸、日油株式会社製)、NAA(登録商標)-142(ミリスチン酸、日油株式会社製)などが挙げられる。
前記(A)成分の中の前記ポリオキシエチレンアルキルエーテル硫酸塩としては、特に制限はなく、目的に応じて適宜選択することができ、例えば、下記一般式(A1)で表される化合物などが挙げられる。前記ポリオキシエチレンアルキルエーテル硫酸塩は、1種単独で使用してもよいし、2種以上を併用してもよい。
前記アルカリ金属としては、特に制限はなく、目的に応じて適宜選択することができ、例えば、ナトリウム、カリウムなどが挙げられる。
なお、前記( )内の数値は、エチレンオキサイド(E.O.)の平均付加モル数(n)を表す。
前記ポリオキシエチレンアルキルエーテル硫酸塩の市販品としては、例えば、商品名で、Texapon(テキサポン)(登録商標) N70(BASF社製、ポリオキシエチレン(2)ラウリルエーテル硫酸ナトリウム)、シノリンSPE-1250(新日本理化株式会社製、ポリオキシエチレン(2)ラウリルエーテル硫酸ナトリウム)などが挙げられる。
前記(A)成分の中の前記エーテルカルボン酸塩としては、特に制限はなく、目的に応じて適宜選択することができ、例えば、下記一般式(A2)又は(A3)で表される化合物などが挙げられる。前記エーテルカルボン酸塩は、1種単独で使用してもよいし、2種以上を併用してもよい。
なお、前記( )内の数値は、アルキレンオキサイドの平均付加モル数(o)を表す。
前記エーテルカルボン酸塩の市販品としては、例えば、商品名で、エナジコールEC-30(ライオン・スペシャリティ・ケミカルズ株式会社製、ポリオキシエチレン(3)ラウリルエーテル酢酸ナトリウム)、ビューライト LCA-25F(ポリオキシエチレン(3)ラウリルエーテル酢酸ナトリウム)、ビューライト LCA-30D(ポリオキシエチレン(3)ラウリルエーテル酢酸ナトリウム)、ビューライト LCA-H(ポリオキシエチレン(4)ラウリルエーテル酢酸)、ビューライト LCA-25NH(ラウレス-4カルボン酸)、ビューライト SHAA(ラウリルグリコールカルボン酸ナトリウム)、ビューライト LCA(ポリオキシエチレン(3)ラウリルエーテル酢酸ナトリウム)(以上、三洋化成工業株式会社製)、カオーアキポRLM-45NV(ポリオキシエチレン(4.5)ラウリルエーテル酢酸ナトリウム)、カオーアキポRLM-100NV(ポリオキシエチレン(10)ラウリルエーテル酢酸ナトリウム)(以上、花王株式会社製)などが挙げられる。
なお、前記( )内の数値は、アルキレンオキサイドの平均付加モル数(o)を表す。
前記(A)成分の中の前記アミノ酸系界面活性剤としては、特に制限はなく、目的に応じて適宜選択することができ、例えば、下記一般式(A4)で表される化合物などが挙げられる。前記アミノ酸系界面活性剤は、1種単独で使用してもよいし、2種以上を併用してもよい。
前記アミノ酸系界面活性剤の市販品としては、例えば、商品名で、アミライト(登録商標)GCK-11(N-ヤシ油脂肪酸アシルグリシンカリウム)、アミライト(登録商標)GCK-12K(N-ヤシ油脂肪酸アシルグリシンカリウム)、アミライト(登録商標)GCS-12K(N-ヤシ油脂肪酸アシルグリシンナトリウム)、アミライト(登録商標)GCS-11(N-ヤシ油脂肪酸アシルグリシンナトリウム)、アミソフト(登録商標)CS-11(N-ミリストイル-L-グルタミン酸ナトリウム)、アミソフト(登録商標)CS-22(N-ヤシ油脂肪酸アシル-L-グルタミン酸ナトリウム)、アミソフト(登録商標)LS-11(N-ラウロイル-L-グルタミン酸ナトリウム)、アミソフト(登録商標)MS-11(N-ミリストイル-L-グルタミン酸ナトリウム)、アミソフト(登録商標)HS-11P(N-ステアロイル-L-グルタミン酸ナトリウム)、アミソフト(登録商標)HS-11P(F)(N-ステアロイル-L-グルタミン酸ナトリウム)、アミソフト(登録商標)HS21(N-ステアロイル-L-グルタミン酸ジナトリウム)、アミライト(登録商標)ACS-12(ココイルアラニンナトリウム)(以上、味の素ヘルシーサプライ株式会社製)、アミノサーファクト(登録商標)AMMS-P1(N-ミリストイル-L-グルタミン酸ナトリウム)(旭化成ケミカルズ株式会社製)、NIKKOL サルコシネート MN(ミリストイルメチルアミノ酢酸ナトリウム)、NIKKOL アラニネート LN-30(ラウロイルメチル-β-アラニンナトリウム)(以上、日光ケミカルズ株式会社製)、アラノンACE(ヤシ油脂肪酸メチルアラニンナトリウム)、アラノンAME(ミリストイルメチル-β-アラニンナトリウム)、アラノンALE(ラウロイルメチル-β-アラニンナトリウム)(以上、川研ファインケミカル株式会社製)、エナジコール L-30AN(ラウロイルメチル-β-アラニンナトリウム)(ライオン・スペシャリティ・ケミカルズ株式会社製)、ソフティルトAT-L(ラウロイルメチル-β-アラニンナトリウム)(日油株式会社製)などが挙げられる。
前記(B)成分としてのカチオン性ポリマーは、塩化ジメチルジアリルアンモニウム重合体、及び塩化ジメチルジアリルアンモニウム-アクリル酸共重合体から選択される少なくとも1種であり、主に、タオルドライ後の肌の弾力及びすすぎ時の肌の滑らかさを向上させるために含有される。
前記塩化ジメチルジアリルアンモニウム-アクリル酸共重合体は、1種単独で使用してもよいし、2種以上を併用してもよい。
[測定条件]
溶媒:重水(D2O)
測定器:JNM-LA300(300MHz、日本電子株式会社製)
前記(B)成分のカチオン性ポリマーの重量平均分子量は、例えば、SEC-MALLS-RIシステム(測定条件:カラム:東ソー株式会社製TSKgelαシリーズ α-Mカラム30cm、溶媒:硝酸ナトリウム0.3M水溶液)で測定することができる。
前記粘度は、例えば、ブルックフィールド粘度計LVF(ブルックフィールド社製)を用いて測定することができる。
前記粘度は、ブルックフィールド粘度計LVF(ブルックフィールド社製)を用いて、25℃でスピンドルNo.3のローターを使用し、6回転/分間の条件において測定することができる。
前記粘度は、ブルックフィールド粘度計LVF(ブルックフィールド社製)を用いて、25℃でスピンドルNo.1のローターを使用し、60回転/分間の条件において測定することができる。
前記粘度は、ブルックフィールド粘度計LVF(ブルックフィールド社製)を用いて、25℃でスピンドルNo.4のローターを使用し、60回転/分間の条件において測定することができる。
前記粘度は、ブルックフィールド粘度計LVF(ブルックフィールド社製)を用いて、25℃でスピンドルNo.4のローターを使用し、30回転/分間の条件において測定することができる。
前記(C)成分としてのポリエチレングリコールは、平均分子量が190~630のポリエチレングリコールであり、主に、タオルドライ後の肌の弾力及び低温安定性を向上させるために含有される。
前記平均分子量は、医薬部外品原料規格2006に記載の平均分子量試験により測定することができる。
なお、商品によっては、例えば、ポリエチレングリコール200は、ポリエチレングリコール#200などのように、ポリエチレングリコールと数値との間に#がつく場合がある。
前記(C)成分の含有量に対する前記(A)成分の含有量の質量比[(A)/(C)]としては、泡持ち、タオルドライ後の肌の弾力、及び低温安定性の点から、15~100であるが、20~40が好ましい。前記質量比[(A)/(C)]が、15未満であると、泡持ちが不十分となり、100を超えると、タオルドライ後の肌の弾力及び低温安定性が不十分となる。
前記(D)成分の共重合体は、すすぎ時の肌の滑らかさを向上させるために含有されることが好ましい。
前記nは0~34が好ましく、前記mは24~31が好ましく、前記zは35~76が好ましい。
これらの中でも、すすぎ時の肌の滑らかさの点から、前記一般式(1)におけるn:m:z=0:24:76が好ましい。
[測定条件]
溶媒:重水(D2O)
測定器:JNM-LA300(300MHz、日本電子株式会社製)
前記粘度は、例えば、ブルックフィールド粘度計LVF(ブルックフィールド社製)を用いて測定することができる。
25℃でスピンドルNo.5のローターを使用し、30回転/分間の条件で測定することができる。
前記液体皮膚洗浄剤組成物には、前記(A)成分、前記(B)成分、前記(C)成分、及び前記(D)の各成分以外にも、本発明の効果を損なわない範囲で必要に応じて、その他の成分を配合することができる。
前記その他の成分としては、例えば、前記(A)成分以外の界面活性剤、前記(B)成分及び前記(D)成分以外の水溶性高分子、油分、シリコーン類、アルコール類、ラノリン誘導体、蛋白誘導体、薬剤(例えば、ビタミン類など)、保湿剤、殺菌剤、防腐剤、pH調整剤、酸化防止剤、金属封鎖剤、紫外線吸収・散乱剤、動植物抽出物又はその誘導体、キレート剤、紫外線吸収・散乱剤、アミノ酸類、色素、香料、顔料、無機粉体、粘土鉱物、水不溶性高分子化合物粉体などが挙げられる。これらは、1種単独で使用してもよく、2種以上を併用してもよい。
前記油分の含有量としては、本発明の効果を損なわない限り、特に制限はなく、目的に応じて適宜選択することができるが、前記液体皮膚洗浄剤組成物全量に対して、0.1質量%~3質量%が好ましい。
前記アルコール類の含有量としては、本発明の効果を損なわない限り、特に制限はなく、目的に応じて適宜選択することができるが、前記液体皮膚洗浄剤組成物全量に対して、0.1質量%~3質量%が好ましい。
前記アルコール類の含有量としては、本発明の効果を損なわない限り、特に制限はなく、目的に応じて適宜選択することができるが、前記液体皮膚洗浄剤組成物全量に対して、0.1質量%~10質量%が好ましい。
前記防腐剤の含有量としては、本発明の効果を損なわない限り、特に制限はなく、目的に応じて適宜選択することができるが、前記液体皮膚洗浄剤組成物全量に対して、0.1質量%~1質量%が好ましい。
前記酸化防止剤の含有量としては、本発明の効果を損なわない限り、特に制限はなく、目的に応じて適宜選択することができるが、前記液体皮膚洗浄剤組成物全量に対して、0.1質量%~1質量%が好ましい。
前記キレート剤の含有量としては、本発明の効果を損なわない限り、特に制限はなく、目的に応じて適宜選択することができるが、前記液体皮膚洗浄剤組成物全量に対して、0.1質量%~1質量%が好ましい。
前記ビタミン類の含有量としては、本発明の効果を損なわない限り、特に制限はなく、目的に応じて適宜選択することができるが、前記液体皮膚洗浄剤組成物全量に対して、0.001質量%~0.5質量%が好ましい。
前記アミノ酸類の含有量としては、本発明の効果を損なわない限り、特に制限はなく、目的に応じて適宜選択することができるが、前記液体皮膚洗浄剤組成物全量に対して、0.001質量%~0.5質量%が好ましい。
前記液体皮膚洗浄剤組成物の25℃におけるpHとしては、特に制限はなく、目的に応じて適宜選択することができるが、9.5~11.0が好ましく、9.8~10.6がより好ましい。
前記pHは、例えば、ガラス電極色水素イオン濃度指示計 HM-30R(東亜ディーケーケー社製 電極タイプGST-5721)を使用して測定することができる。
前記液体皮膚洗浄剤組成物の25℃における粘度としては、特に制限はなく、使用する容器などに応じて適宜選択することができるが、4mPa・s~40mPa・sが好ましく、8mPa・s~30mPa・sがより好ましい。
例えば、ノズル部を押し下げることによって泡を吐出できるポンプフォーマー容器と、305メッシュ及び200メッシュの多孔質膜体を各1枚使用する際において、使用する温度条件下で、前記液体皮膚洗浄剤組成物の粘度は、30mPa・s以下が好ましく、25mPa・s以下がより好ましい。
前記粘度は、例えば、BM型粘度計(株式会社東京計器製)を用いて、試料温度25℃にて、回転数60rpm、No.1のローターにて1分間後の粘度を測定することにより測定できる。
前記液体皮膚洗浄剤組成物は、フォーマー容器に充填されてなり泡状に吐出されるタイプのものである。
前記フォーマー容器としては、特に制限はなく、公知のフォーマー容器の中から適宜選択することができ、例えば、ノンガス型の泡吐出容器、噴射剤と耐圧容器を使用したエアゾール容器などが挙げられる。これらの中でも、ノンガス型の泡吐出容器が好ましい。
また、前記多孔質膜体の枚数としては、特に制限はなく、目的に応じて適宜選択することができるが、泡性能を向上させる観点から、2枚~4枚が好ましい。
前記液体皮膚洗浄剤組成物の製造方法としては、特に制限はなく、目的に応じて適宜選択することができ、例えば、前記(A)成分、前記(B)成分、及び前記(C)成分、更に必要に応じて、前記(D)成分、前記その他の成分、及び精製水(液体皮膚洗浄剤組成物全体が100質量%となるように残量として配合)を混合して得ることができる。
具体的には、70℃~80℃に加温した精製水に前記(A)成分を溶解し、40℃以下に冷却してから、前記(B)成分、前記(C)成分、並びに、必要に応じて前記(D)成分及び前記その他の成分を添加して製造することができる。
前記攪拌羽根としては、特に制限はなく、目的に応じて適宜選択することができ、例えば、プロペラ、タービン、ディスパーなどが挙げられる。
前記液体皮膚洗浄剤組成物の使用部位としては、特に制限はなく、目的に応じて適宜選択することができ、例えば、全身、顔、手などに使用することができる。
下記表1~表5に示す組成、及び含有量の液体皮膚洗浄剤組成物を以下の方法に準じて調製した。
精製水を70℃~80℃に加温し、(A)成分のアニオン性界面活性剤を溶解し、40℃以下に冷却してから、(B)成分のカチオン性ポリマー又は(B)成分の比較成分のカチオン化セルロース及び(C)成分又は(C)成分の比較成分のポリエチレングリコールを添加した。前記精製水は、最終的に得られる液体皮膚洗浄剤組成物の95質量%となる量を使用した。その後、所定のpH(pH10.0)に満たない場合は、共通成分である水酸化カリウムを添加し、所定のpHを10.0に調整後、共通成分であるラウリン酸アミドプロピルベタイン、プロピレングリコール、及び香料を加え、全体量が100質量%になるように精製水を加えて、実施例1~11及び19~32、並びに比較例1~10の各液体皮膚洗浄剤組成物を得た。
なお、前記各液体皮膚洗浄剤組成物を調製する際、攪拌羽根としてはプロペラを使用し、スリーワンモーター(HEIDON BL1200、新東化学株式会社製)を用いて攪拌した。また、pHは、pHメーター(HM-30R、TOA DKK社製)を用いて、25℃で測定した。
下記表2及び表3に示す組成、及び含有量の液体皮膚洗浄剤組成物を以下の方法に準じて調製した。
実施例1~11及び19~32の液体皮膚洗浄剤組成物の調製において、(A)成分のアニオン性界面活性剤を溶解し、(B)成分のカチオン性ポリマー及び(C)成分のポリエチレングリコールを添加する際に、(D)成分の共重合体も添加したこと以外は、実施例1~11及び19~32の液体皮膚洗浄剤組成物の調製方法と同様の方法で実施例12~18の各液体皮膚洗浄剤組成物を得た。
専門評価者10名が、実施例1~32及び比較例1~10の各液体皮膚洗浄剤組成物をナイロンタオル(アワスターボディタオルやわらかめ、キクロン社製)に2プッシュ(約6g)取り、全身を洗浄後に「泡持ち」を観察し、下記評価基準に基づいて評価した。結果は、前記専門評価者10名の評点平均値を求め、下記評点平均値の判定基準に基づき判定した。
-「泡持ち」の評価基準-
4点:身体を洗い終わる頃、洗い始めに身体に付けたほとんどの泡が残っている
3点:身体を洗い終わる頃、洗い始めに身体に付けた8割~5割ほどの泡が残っている
2点:身体を洗い終わる頃、洗い始めに身体に付けた2割~4割ほどの泡が残っている
1点:身体を洗い終わる頃、洗い始めに身体に付けた泡がほとんど残っていない
-「泡持ち」の判定基準-
◎:評点平均値が、3.5点以上4.0点以下
○:評点平均値が、3.0点以上3.5点未満
△:評点平均値が、2.0点以上3.0点未満
×:評点平均値が、2.0点未満
専門評価者10名が、実施例1~32及び比較例1~10の各液体皮膚洗浄剤組成物を5プッシュ(約15g)手に取り、手で全身を洗浄後、40℃の温水ですすぎ流した際の「すすぎ時の肌の滑らかさ」を下記評価基準に基づいて評価した。結果は、前記専門評価者10名の評点平均値を求め、下記評点平均値の判定基準に基づき判定した。
-「すすぎ時の肌の滑らかさ」の評価基準-
4点:肌に滑らかさを強く感じる
3点:肌に滑らかさを感じる
2点:肌に滑らかさをやや感じる
1点:肌に滑らかさを感じない
-「すすぎ時の肌の滑らかさ」の判定基準-
◎:評点平均値が、3.5点以上4.0点以下
○:評点平均値が、3.0点以上3.5点未満
△:評点平均値が、2.0点以上3.0点未満
×:評点平均値が、2.0点未満
専門評価者10名が、実施例1~32及び比較例1~10の各液体皮膚洗浄剤組成物を5プッシュ(約15g)手に取り、手で全身を洗浄後、40℃の温水ですすぎ流し、タオルドライした。その後、24℃の恒温室にて30分間安静にした後、「タオルドライ後の肌の弾力」を下記評価基準に基づいて評価した。結果は、前記専門評価者10名の評点平均値を求め、下記評点平均値の判定基準に基づき判定した。
-「タオルドライ後の肌の弾力」の評価基準-
4点:手のひらで前腕を押したときに皮膚が動く感じを強く感じる
3点:手のひらで前腕を押したときに皮膚が動く感じを感じる
2点:手のひらで前腕を押したときに皮膚が動く感じをやや感じる
1点:手のひらで前腕を押したときに皮膚が動く感じを感じない
-「タオルドライ後の肌の弾力」の判定基準-
◎:評点平均値が、3.5点以上4.0点以下
○:評点平均値が、3.0点以上3.5点未満
△:評点平均値が、2.0点以上3.0点未満
×:評点平均値が、2.0点未満
専門評価者10名が、実施例1~32及び比較例1~10の各液体皮膚洗浄剤組成物を5プッシュ(約15g)手に取り、手で全身を洗浄後、40℃の温水ですすぎ流し、タオルドライした。その後、24℃の恒温室にて30分間安静にした後、「タオルドライ後の肌のツッパリ感」を下記評価基準に基づいて評価した。結果は、前記専門評価者10名の評点平均値を求め、下記評点平均値の判定基準に基づき判定した。
-「タオルドライ後の肌のツッパリ感」の評価基準-
4点:全く肌のツッパリ感を感じない
3点:やや肌のツッパリ感を感じる
2点:かなり肌のツッパリ感を感じる
1点:非常に肌のツッパリ感を感じる
-「タオルドライ後の肌のツッパリ感」の判定基準-
◎:評点平均値が、3.5点以上4.0点以下
○:評点平均値が、3.0点以上3.5点未満
△:評点平均値が、2.0点以上3.0点未満
×:評点平均値が、2.0点未満
実施例1~32及び比較例1~10の各液体皮膚洗浄剤組成物を約50g、円柱型の透明ガラス瓶(直径4cm、高さ7.5cm)に入れ、-5℃の恒温槽で2週間保存した。専門パネラーが、2週間保存後の液体皮膚洗浄剤組成物の析出物の生成状態を目視にて観察し、下記評価基準に基づいて評価した。
-「低温安定性」の判定基準-
◎:2週間以内に結晶又は固体の析出を全く認めない
〇:2週間以内に結晶又は固体の析出をほとんど認めない(商品価値上、問題なし)
×:2週間以内に多量の結晶又は固体の析出を認める
※2:ミリスチン酸カリウムは、ミリスチン酸(NAA-142、日油株式会社製)を水酸化カリウム(旭硝子株式会社製、液体苛性カリ)で中和させて調製したものを使用した。
※3:パルミチン酸カリウムは、パルミチン酸(NAA-160、日油株式会社製)を、水酸化カリウム(液体苛性カリ、旭硝子株式会社製)で中和させて調製したものを使用した。
※4:ステアリン酸カリウムは、ステアリン酸(NAA-180、日油株式会社製)を、水酸化カリウム(液体苛性カリ、旭硝子株式会社製)で中和させて調製したものを使用した。
Claims (4)
- (A)(a1)パルミチン酸塩及び(a2)ステアリン酸塩から選択される少なくとも1種を含有するアニオン性界面活性剤と、
(B)塩化ジメチルジアリルアンモニウム重合体、及び塩化ジメチルジアリルアンモニウム-アクリル酸共重合体から選択される少なくとも1種のカチオン性ポリマーと、
(C)平均分子量が190~630のポリエチレングリコールと、
を含有し、
前記(A)成分の含有量が、10質量%~25質量%であり、
前記(B)成分の塩化ジメチルジアリルアンモニウム-アクリル酸共重合体における塩化ジメチルジアリルアンモニウムに由来する構造単位のモル比が40モル%以上であり、
前記(C)成分の含有量に対する前記(A)成分の含有量の質量比[(A)/(C)]が、15~100であり、
フォーマー容器に充填されてなることを特徴とする液体皮膚洗浄剤組成物。 - 前記(A)成分の含有量に対する前記(a1)パルミチン酸塩と前記(a2)ステアリン酸塩との合計含有量の質量比[((a1)+(a2))/(A)]が、0.1~0.5である請求項1から2のいずれかに記載の液体皮膚洗浄剤組成物。
- 前記(B)成分の含有量が、0.2質量%~0.8質量%であり、
前記(C)成分の含有量が、0.2質量%~0.8質量%であり、
前記(D)成分の含有量が、0.05質量%~0.3質量%
である請求項1から3のいずれかに記載の液体皮膚洗浄剤組成物。
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