WO2021060869A1 - 사용감이 개선된 미세 입자 구조의 점증제 - Google Patents
사용감이 개선된 미세 입자 구조의 점증제 Download PDFInfo
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- WO2021060869A1 WO2021060869A1 PCT/KR2020/012951 KR2020012951W WO2021060869A1 WO 2021060869 A1 WO2021060869 A1 WO 2021060869A1 KR 2020012951 W KR2020012951 W KR 2020012951W WO 2021060869 A1 WO2021060869 A1 WO 2021060869A1
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- 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
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- 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
- A61K8/06—Emulsions
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- 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
- A61K8/37—Esters of carboxylic acids
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- 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
- A61K8/46—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur
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- 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
Definitions
- the present invention relates to a thickener having a fine particle structure with improved feeling of use.
- Conventional water-dispersion thickeners have soft and thick application properties, have a poor finish, and have a high stickiness as they are used more.
- an AMPS (Acrylamidopropylmethyl Sulfonic acid) thickener having a silky feeling of use has been reported.
- the AMPS thickener is generally synthesized by a precipitation polymerization method (Patent Document 1).
- Patent Document 1 When synthesized through the precipitation polymerization method, since the thickener particles exist in an amorphous state, they are dispersed in an aqueous phase in an irregular form and swelled to increase the viscosity of the formulation and impart stability.
- the thickener obtained by the precipitation polymerization method is opaque when dispersed in an aqueous phase and is difficult to apply to a transparent formulation. Therefore, there is a concern that limitations may arise when developing various formulations.
- An object of the present invention is to provide a thickener having a fine particle structure with improved feeling of use.
- the present invention is an aqueous phase comprising a compound represented by the following formula (1) and a crosslinkable monomer; And an oil phase comprising a non-polar organic solvent having a solubility parameter of 15 (MPa) 1/2 or more;
- It provides a method for producing a thickener comprising the step of preparing a crosslinked polymer by polymerization reaction by adding a reaction initiator.
- the present invention relates to a composition comprising a thickener prepared by the above-described manufacturing method.
- the polymerization reaction proceeds in a homogeneous reverse phase emulsion having a small particle size, so that a thickener in the form of homogeneous fine particles can be prepared.
- the thickener in the form of spherical particles prepared by the present invention not only maintains the shape of the particles even when swelling in the water phase, but also has the advantage that uniform particles are dispersed, so that the appearance is transparent and stability is high.
- the thickener prepared (polymerized) according to the present invention is dispersed in the form of fine particles to form a formulation. It can keep its shape within. In addition, when applied to the skin, the physical bonding structure between the particles easily collapses, and the feeling of use, such as spreadability, moisture, and nutrition, can be improved.
- FIG. 1 shows a picture comparing the transparency of the thickener prepared in the embodiment of the present invention.
- Example 3 shows a picture comparing the particles of the thickener prepared in Example 2 and Comparative Example 1 of the present invention.
- FIG. 6 shows an optical image of a cream prepared in an example of the present invention.
- the present invention (1) an aqueous phase comprising a compound represented by the following formula (1) and a crosslinkable monomer; And preparing an oil-in-water emulsion composition comprising an oil phase including a non-polar organic solvent having a solubility parameter of 15 (MPa) 1/2 or more;
- It relates to a method for producing a thickener comprising the step of preparing a crosslinked polymer by polymerization reaction by addition of a reaction initiator.
- a thickener is prepared using a phase inversion temperature (PIT) polymerization method.
- PIT phase inversion temperature
- the polymerization reaction proceeds in a uniform reverse phase emulsion having a small particle size by using a phase inversion temperature (PIT) polymerization method that is converted into a water-in-oil (w/o) emulsion phase.
- PIT phase inversion temperature
- the thickener in the form of spherical fine particles polymerized in the above manner has the advantage of not only maintaining the shape of the particles even when swelling in the water phase, but also having a transparent appearance and high stability as uniform particles are dispersed.
- thickener means a crosslinked polymer prepared according to the production method of the present invention, and may mean a solution in which the crosslinked polymer is dispersed.
- step (1) comprises an aqueous phase comprising a compound represented by the following formula (1) and a crosslinkable monomer; And an oil phase containing a non-polar organic solvent having a solubility parameter of 15 (MPa) 1/2 or more.
- the aqueous phase includes a compound represented by the following formula (1) and a crosslinkable monomer.
- the compound represented by Chemical Formula 1 may be acrylamidopropylmethyl sulfonic acid (AMPS).
- AMPS acrylamidopropylmethyl sulfonic acid
- the content of the compound represented by Formula 1 is not particularly limited, and may be 95 to 99.5 parts by weight based on the total weight (100 parts by weight) of the compound represented by Formula 1 and the crosslinkable monomer.
- the crosslinkable monomer may be a compound having two or more acrylate groups, two or more acrylamide groups, or two or more vinyl groups.
- a crosslinkable monomer for example, trimethylolpropane ethoxylate triacrylate (TMPETA), methylenebisacrylamide, divinyl sulfone, divinylbenzene, divinyl ether, divinylacetylene, polyglycol At least one selected from the group consisting of diacrylate, polyglycol triacrylate, and 4-arm-polyglycol tetraacrylate may be used.
- TMPETA trimethylolpropane ethoxylate triacrylate
- Chemical Formula 2 a compound represented by the following Chemical Formula 2
- TMPETA is a compound having three crosslinking points and can improve the molecular weight of the crosslinked product, thereby improving the viscosity.
- the content of the crosslinkable monomer is not particularly limited, and may be 0.5 to 5.0 parts by weight based on the total weight (100 parts by weight) of the compound represented by Formula 1 and the crosslinkable monomer.
- the solvent of the aqueous phase may be water (distilled water).
- the pH of the aqueous phase may be 5 to 9.
- the pH can be adjusted using aqueous ammonia.
- the oil phase may contain an organic solvent and a surfactant.
- the organic solvent may be a non-polar organic solvent having a solubility parameter of 15 (MPa) 1/2 or more, and specifically, a hydrocarbon oil having 7 to 17 carbon atoms, and a straight chain having 7 to 17 carbon atoms. It may be a saturated hydrocarbon oil.
- solubility coefficient is well known to those skilled in the art and is routinely used as a guide for determining the compatibility and solubility of a substance.
- heptane may be used as such a non-polar organic solvent.
- the heptane has a boiling point of 98° C. and is not limited in the polymerization process according to the present invention compared to other organic solvents.
- the boiling point is 68°C, so the synthesis temperature cannot be raised to 60°C or higher, so there is a problem in that there are many restrictions on the process.
- heat generation occurs due to an explosive reaction during the introduction of the initiator and the temperature inside the reactor rises by about 5-10°C.
- the method of slowly adding an initiator to maintain the homeostasis of the reaction temperature causes an increase in processing time when applied to a mass production process, which has a disadvantage of increasing the production cost.
- the thickener of interest of the present invention can be easily prepared without any restriction on the process.
- one or more surfactants may be used as the surfactant.
- the HLB value of the surfactant may be 6 to 14, 7 to 10, or 8 to 9.
- the total HLB value may mean the HLB value of one surfactant when one surfactant is used, and may mean the sum of the HLB values of two or more surfactants when two or more surfactants are used.
- the total HLB value is 6 or less, it exists as a water-in-oil type reverse phase emulsion from room temperature due to the strong hydrophobicity of the surfactant, and is polymerized without a pre-phase process, so the effect of reducing the size of the emulsion may not be sufficient.
- the total HLB value is 14 or more, the water-in-water emulsion having an aqueous external wound is maintained due to the strong hydrophilicity of the surfactant, so that spherical particles are not formed, there is a concern that the amorphous state of the prepared thickener may increase.
- two types of surfactants may be used as surfactants.
- a surfactant having an HLB value of 3 to 8 and a surfactant having an HLB value of 8 to 16 may be used in combination, or a surfactant having an HLB value of 5 to 7 and a surfactant having an HLB value of 9 to 11 Can be used in combination.
- the content of the surfactant is not particularly limited and may vary depending on the type of organic solvent. Specifically, the content of the surfactant may be 5 to 30 parts by weight based on the total weight (100 parts by weight) of the organic solvent. In the above content range, the emulsion can be transformed, and PIT polymerization can be easily performed.
- the weight ratio of the aqueous phase and the oil phase may be 30:70 to 70:30.
- step (2) is a step of preparing a water-in-oil type reversed-phase emulsion composition by heating to 60°C or higher.
- the emulsion prepared in step (1) has an oil-in-water type at room temperature, but can be transformed into a water-in-oil type emulsion by heating.
- the emulsion produced by the inversion phase may have an effect of reducing the size of the emulsion, and has the effect that the particle size of the polymer prepared in the step described later is small.
- the reaction temperature may be specifically 62°C or more, 65°C or more, 70°C or more, or 75°C, and the upper limit may be 100°C. It is possible to stably prepare a thickener in the above temperature range.
- step (3) is a step of preparing a crosslinked polymer by polymerization reaction by adding a reaction initiator.
- the type of the reaction initiator is not particularly limited as long as it has the ability to initiate radical polymerization, and may be selected from the group consisting of, for example, peroxides and azo compounds.
- peroxide initiator benzoyl peroxide, acetyl peroxide, dilauryl peroxide, di-tert-butyl peroxide, cumyl hydroperoxide, hydrogen peroxide, potassium persulfate, etc. may be used, and as an azo compound initiator, Azo nitrile, Azo ester, Azo amide, Azo imidazolin, Azo amidine, Macro Azo initiator, etc. can be used.
- 4,4'-Azobis (4-cyanovaleric acid) may be used as an initiator.
- an initiator is added and reacted to obtain a crosslinked polymer having the desired viscosity of the present invention, that is, a thickener, and the yield of the thickener can be increased.
- a solution in which a crosslinked polymer prepared by the above-described manufacturing method is formed may be used as a thickener, and the solution may be precipitated with a precipitating agent to finally prepare a powdery thickener.
- acetone or the like may be used as a settling agent.
- the step may be performed at 65° C. or higher for 2 to 6 hours.
- the present invention provides a thickener prepared by the method for producing the thickener described above.
- the thickener according to the present invention has a spherical fine particle shape and swells in water, ethanol, or a water-ethanol mixed solution to provide a visually uniform high viscosity solution.
- the thickener prepared by the present invention may have an average particle diameter of 10 to 300 um.
- the thickener prepared in the present invention may have a viscosity of 500 to 70,000 cPs, or 5,000 to 50,000 cPs at 25° C. in a 1% (w/v) aqueous dispersion.
- the present invention provides a cosmetic composition comprising the above-described thickener.
- the content of the thickener is not particularly limited, and may be appropriately determined depending on the desired cosmetic. In terms of usability, the thickener may be included in an amount of 0.01 to 10% by weight, or 0.1 to 5% by weight.
- Cosmetics depending on the formulation, contain oily bases, surfactants, powders, moisturizers, UV absorbers, alcohols, chelating agents, pH adjusters, preservatives, antioxidants, thickeners, drugs, dyes, pigments, fragrances, water, etc. It can be prepared by mixing appropriately within a range that does not.
- the kind of cosmetic composition of the present invention is not particularly limited. For example, it can be applied to basic cosmetics, makeup cosmetics, pack cosmetics, hair cosmetics, and the like.
- the thickener according to the present invention can be used in pharmaceuticals, food stabilizers or lubricant compositions.
- the content of the thickener may be appropriately adjusted according to the purpose of use, and may include known additional ingredients.
- Oil phase In 80 g of heptane, add 10 g each of polyoxyethylene (3) oleyl ether and polyoxyethylene (6) oleyl ether, and mix well. gave.
- aqueous phase and the oil phase were put into a reactor and heated to 70° C., and 0.1 g of an initiator 4,4′-Azobis (4-cyanovaleric acid) was added and reacted for 3 hours, and a thickener was precipitated with acetone.
- Oil phase To 80 g of heptane, 10 g of polyoxyethylene (3) oleyl ether and 10 g of polyoxyethylene (6) oleyl ether were added and mixed well.
- aqueous phase and the oil phase were put into a reactor and heated to 70° C., and 0.1 g of an initiator 4,4′-Azobis (4-cyanovaleric acid) was added and reacted for 3 hours, and a thickener was precipitated with acetone.
- Oil phase To 80 g of heptane, 10 g of polyoxyethylene (3) oleyl ether and 10 g of polyoxyethylene (6) oleyl ether were added and mixed well.
- aqueous phase and the oil phase were put into a reactor and heated to 70° C., and 0.1 g of an initiator 4,4′-Azobis (4-cyanovaleric acid) was added and reacted for 3 hours, and a thickener was precipitated with acetone.
- Water phase Dissolve 17 g of acrylamidomethylpropanesulfonic acid and 1.0 g of trimethylolpropane ethoxylate triacrylate in 63 g of distilled water, and then neutralize to pH 7-9 with aqueous ammonia.
- Oil phase 80 g of hexane, 10 g of polyoxyethylene (3) oleyl ether, and 5 g of polyoxyethylene (6) oleyl ether were added and mixed well.
- aqueous phase and the oil phase were put in one reactor, heated to 70° C., and 0.1 g of an initiator 4,4′-Azobis(4-cyanovaleric acid) was added to react for 3 hours, and a thickener was precipitated with acetone.
- the left container is a container containing a 1% (w/v) aqueous solution of the thickener polymerized in Comparative Example 1
- the right container is a container containing a 1% aqueous solution of the thickener polymerized in Example 2. Show.
- the thickener prepared in Comparative Example 1 is opaque, but the thickener prepared in Example is transparent in an aqueous solution.
- FIG. 2 is a particle of the thickener prepared in Example 2, specifically, in FIG. 2 (a) shows the droplet state (70° C.) of the oil-in-water emulsion formed during the polymerization reaction in Example 2, and (b) Represents the hydrodynamic volume size of the polymerized fine particle thickener, and (c) represents the optical image of the aqueous solution containing the thickener.
- Example 2 As shown in FIG. 2, it can be seen that the thickener prepared in Example 2 exists in the form of spherical particles.
- Example 3 shows a result of comparing the particles of the thickener prepared in Comparative Example 1 (a) and Example 2 (b) (optical image).
- Figure 4 shows the comparison result of the hydrodynamic volume size of the fine particle thickener polymerized in Example 2 and Comparative Example 2.
- Example 2 using heptane as an organic solvent has a higher volume size than that of using hexane.
- the viscosity of the thickener prepared in Example 2 and Comparative Example 2 was measured using a Brookefield LVT (Brookefield, MA) under conditions of 64 spindle and 10 to 30 rpm.
- the viscosity was measured for an aqueous solution containing 1% (w/v) a thickener.
- the viscosity of the aqueous solution containing the thickener of Comparative Example 2 was measured to be 2,000 cPs, and the viscosity of the aqueous solution containing the thickener of Example 2 was measured to be 14,000 cPs.
- the rheological properties of the prepared thickener were measured. Rheological properties were measured using a Discovery hr-3 hybrid rheometer (TA Instruments).
- FIG. 5 (a) and (b) show the results of measuring rheological properties of the thickeners prepared in Comparative Examples 1 and 2, respectively.
- the polymer chain has an entangled structure in the polymer solution, so that the entangled structure is unwound at high shear stress, and a phenomenon that resists this occurs just before the structure is completely unwound. This is called an overshooting phenomenon, and it can be seen that such a phenomenon occurs in Comparative Example 1 in an amorphous state.
- Example 2 since the thickener is present in the form of fine particles, it can be seen that the structure collapse occurs without almost any overshooting phenomenon at high shear stress. Because of these rheological characteristics, it is believed that the thickener according to the present invention improves the feeling of use, particularly, application properties in cosmetic formulations.
- a cream was prepared with the ingredients and contents shown in Table 1 below.
- the evaluation of the feeling of use was performed on a scale of 5 points, respectively, for softness, thickness, moisture, and stickiness.
- the viscosity in 0.4% (w/v) aqueous solution of the thickener of Comparative Example 1 is 5,500 cPs, but when applied to the ⁇ Cream 1> formulation, it decreases to 4,000 cPs, whereas the thickener of Example 2 is an aqueous solution.
- the viscosity at 0.4% (w/v) is 1,500 cPs, but when applied to the ⁇ Cream 3> formulation, it can be seen that it increases to 6,500 cPs.
- FIG. 6 shows optical images of Cream 1 (a) and Cream 3 (b).
- the viscosity of the thickener of Comparative Example 1 decreases due to shrinkage of the entangled structure in the formulation by the emulsifier, whereas the thickener of Example 2 has a hydrodynamic volume in the form of particles, so it is not significantly affected by the emulsifier. In addition, it seems that a certain volume is maintained in the formulation, and the increasing effect is doubled due to the coexistence of emulsified particles and fine particles that hinder fluidity in the formulation.
- the polymerization reaction proceeds in a homogeneous reverse phase emulsion having a small particle size, so that a thickener in the form of homogeneous fine particles can be prepared.
- the thickener in the form of spherical particles prepared by the present invention not only maintains the shape of the particles even when swelling in the water phase, but also has the advantage that uniform particles are dispersed, so that the appearance is transparent and stability is high.
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Abstract
Description
크림1 | 크림2 | 크림3 | 크림4 | 크림 5 | ||
유상 | Silicone oil | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 |
Glycerin | 8.0 | 8.0 | 8.0 | 8.0 | 8.0 | |
Heptandiol | 8.0 | 8.0 | 8.0 | 8.0 | 8.0 | |
Hexadiol | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | |
Hydrogenated caster oil | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | |
수상 | 비교예 1 | 0.4 | - | - | - | |
실시예 1 | - | 0.4 | - | - | ||
실시예 2 | - | - | 0.4 | - | ||
실시예 3 | - | - | - | 0.4 | ||
비교예 2 | - | - | - | - | 0.4 | |
dexpanthenol | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | |
TRISODIUM EDTA | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | |
Distilled water | To 100 | To 100 | To 100 | To 100 | To 100 |
부드러움 | 두께감 | 수분감 | 끈적임 | |
크림 1 | 3.2 | 3.5 | 3.7 | 1.3 |
크림 2 | 3.2 | 2.8 | 3.8 | 1.2 |
크림 3 | 4.1 | 3.7 | 3.7 | 1.0 |
크림 4 | 3.0 | 3.4 | 3.6 | 1.2 |
크림 5 | 3.0 | 1.5 | 4.2 | 1.0 |
Claims (12)
- 제 1 항에 있어서,화학식 1로 표시되는 화합물은 아크릴아미도메틸프로판설폰산(Acrylamidopropylmethyl Sulfonic acid, AMPS)인 점증제의 제조 방법.
- 제 1 항에 있어서,화학식 1로 표시되는 화합물의 함량은 화학식 1로 표현되는 화합물 및 가교성 단량체의 총 중량에 대하여 95 내지 99.5 중량부인 점증제의 제조 방법.
- 제 1 항에 있어서,가교성 단량체는 2개 이상의 아크릴레이트기, 2개 이상의 아크릴아마이드기, 또는 2개 이상의 비닐기를 가지는 화합물인 점증제의 제조 방법.
- 제 1 항에 있어서,가교성 단량체의 함량은 화학식 1로 표현되는 화합물 및 가교성 단량체의 총 중량에 대하여 0.5 내지 5 중량부인 점증제의 제조 방법.
- 제 1 항에 있어서,비극성 유기용매는 탄소수 7 내지 17의 탄화수소 오일인 점증제의 제조 방법.
- 제 1 항에 있어서,유상은 하나 이상의 계면활성제를 추가로 포함하며,상기 계면활성제의 총 HLB 값은 6 내지 14인 점증제의 제조 방법.
- 제 7 항에 있어서,HLB 값이 3 내지 8인 계면활성제와 HLB 값이 8 내지 16인 계면활성제의 2 종의 계면활성제를 사용하는 것인 점증제의 제조 방법.
- 제 1 항에 있어서,반응개시제는 과산화물 및 아조화합물로 이루어진 그룹으로부터 선택된 하나 이상인 것인 점증제의 제조 방법.
- 제 1 항에 있어서,중합 반응은 60℃ 이상에서 2 내지 6 시간 동안 수행되는 것인 점증제의 제조 방법.
- 제 1 항에 따른 제조 방법에 의해 제조된 점증제를 포함하는 조성물.
- 제 11 항에 있어서,조성물은 화장료, 의약품, 식품안정제 또는 윤활제 제조를 위한 것인 조성물.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2022519023A JP2022550731A (ja) | 2019-09-24 | 2020-09-24 | 使用感が改善された微細粒子構造の増粘剤 |
US17/754,112 US20220287950A1 (en) | 2019-09-24 | 2020-09-24 | Microparticle-structured thickener having improved sensation of use |
CN202080066518.9A CN114423403A (zh) | 2019-09-24 | 2020-09-24 | 使用感得到改善的微细颗粒结构的增稠剂 |
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KR1020200116124A KR102531603B1 (ko) | 2019-09-24 | 2020-09-10 | 사용감이 개선된 미세 입자 구조의 점증제 |
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