CN112370375A - After-sun calming and relieving mask - Google Patents
After-sun calming and relieving mask Download PDFInfo
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- CN112370375A CN112370375A CN202011416489.2A CN202011416489A CN112370375A CN 112370375 A CN112370375 A CN 112370375A CN 202011416489 A CN202011416489 A CN 202011416489A CN 112370375 A CN112370375 A CN 112370375A
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- 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
- A61K8/8141—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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- A61K8/8158—Homopolymers or copolymers of amides or imides, e.g. (meth) acrylamide; Compositions of derivatives of such polymers
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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
- A61K8/11—Encapsulated compositions
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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
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61K8/00—Cosmetics or similar toiletry preparations
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- 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
- A61K8/34—Alcohols
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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
- A61K8/34—Alcohols
- A61K8/342—Alcohols having more than seven atoms in an unbroken chain
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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
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- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
- A61Q19/004—Aftersun preparations
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- 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
- A61K2800/24—Thermal properties
- A61K2800/244—Endothermic; Cooling; Cooling sensation
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- A—HUMAN NECESSITIES
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- 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
- A61K2800/56—Compounds, absorbed onto or entrapped into a solid carrier, e.g. encapsulated perfumes, inclusion compounds, sustained release forms
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Abstract
The invention discloses a post-basking calming and relieving mask which comprises a compressed mask base cloth and essence water which are packaged independently, wherein a cooling repair microcapsule taking phase-change materials of dodecanol and decanoic acid as core materials, and a temperature-sensitive molecularly imprinted polymer taking L-menthol as a template molecule and chitosan-N-isopropyl acrylamide copolymer as a functional monomer as a wall material is loaded on the compressed mask base cloth. According to the invention, the cooling and repairing microcapsule containing the phase-change material is loaded on the mask base cloth, so that the mask can be kept in a low-temperature state for a long time, and the cooling and calming effects of the mask on skin are improved; and the L-menthol is loaded on the wall material of the cooling and repairing microcapsule, so that the controlled release of the L-menthol under the low-temperature condition is realized, and the volatilization failure of the L-menthol in the storage process is avoided, so that the product can be stored for a long time, and the repairing capability of the product on skin is improved.
Description
Technical Field
The invention relates to the field of skin care products, in particular to a post-basking calming and relieving mask.
Background
The skin after being exposed to the sun in summer is very sensitive to high-temperature stimulation, and epidermal cells of the skin can be damaged to a certain degree, so that the phenomena of fever, red swelling and even stabbing pain appear. In order to relieve the skin from the stimulation state, the skin needs to be slowly cooled by cold compress of the mask with the calming and relieving effects, so that the skin temperature is reduced, and the burning sensation is relieved; and the cooling components such as menthol and the like are added into the essence liquid, so that the sensitive skin after being dried is relieved and calmed, and the skin injury is reduced.
Before use, the calming and relieving mask is generally placed in a refrigerator for a period of time to cool, then the low-temperature mask is used for calming and relieving the skin, but the low-temperature mask taken out of the refrigerator is applied to the face and quickly reaches the surface temperature of the face, the low-temperature action time is short, and the cooling and calming effects on the skin after being dried are poor; and the cooling components such as menthol and the like are extremely easy to volatilize, and are difficult to store for a long time after being directly added into the essence, so that the calming and soothing capability of the mask on the skin is reduced.
Disclosure of Invention
The invention provides a post-basking calming and soothing mask, which aims to solve the problems that the existing calming and soothing mask has short low-temperature action time, is very easy to volatilize cooling components such as menthol and the like, is difficult to store for a long time after being directly added into essence, and causes poor calming and soothing capability of the mask on skin; and the L-menthol is loaded on the wall material of the cooling and repairing microcapsule, so that the controlled release of the L-menthol under the low-temperature condition is realized, and the volatilization of the L-menthol in the storage process is avoided, so that the product can be stored for a long time, and the repairing capability of the product on skin is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
the after-sun calming and relieving mask comprises a compressed mask base cloth and essence water which are packaged independently, wherein cooling repairing microcapsules are loaded on the compressed mask base cloth, and the preparation method of the cooling repairing microcapsules comprises the following steps:
(1) dissolving chitosan in an acetic acid solution, introducing nitrogen to remove oxygen, adding N-isopropylacrylamide and ceric ammonium nitrate into the solution, reacting for 1.5-2.5 h at 25-35 ℃, adding acetone to precipitate, and filtering, washing and drying the product to obtain a chitosan-N-isopropylacrylamide copolymer;
(2) adding the chitosan-N-isopropyl acrylamide copolymer into water, stirring for 1-2 h at 10-15 ℃, then adding an ethanol solution of L-menthol, and continuously stirring for 3-5 h to obtain a continuous phase;
(3) adding dodecanol and decanoic acid into the continuous phase, adding an emulsifier, stirring and dispersing for 1-2 h, adjusting the pH of the system to 8.5-9.5 by using a sodium hydroxide solution, dropwise adding a cross-linking agent, reacting for 10-20 h at 65-75 ℃, filtering, washing and drying the obtained product to obtain the cooling and repairing microcapsule.
The invention loads a cooling repair microcapsule which takes a phase change material as a core material and a temperature-sensitive molecularly imprinted polymer as a wall material on a base cloth of a compression mask. When the cooling and repairing microcapsule is prepared, firstly, a functional monomer chitosan-N-isopropyl acrylamide copolymer in a wall layer material is prepared through the step (1) by using an emulsion polymerization method, then, a template molecule L-menthol is added into the chitosan-N-isopropyl acrylamide copolymer for mixing reaction through the step (2), and as the surface of chitosan contains a large number of amino groups, the chitosan and the hydroxyl groups in the L-menthol are easy to form hydrogen bonds, so that after dodecanol and capric acid which are taken as core materials are added into a continuous phase to form an emulsion in the step (3), the functional monomer L-menthol and the chitosan-N-isopropyl acrylamide copolymer can be crosslinked to form a polymer wall material under the action of a crosslinking agent, and finally, a phase-change material dodecanol and capric acid which are taken as core materials, L-menthol which is taken as a template molecule, a polymer wall material is obtained, The microcapsule is prepared by taking a temperature-sensitive molecularly imprinted polymer with chitosan-N-isopropyl acrylamide copolymer as a functional monomer as a wall material.
When the after-sun calming and relieving mask is used, essence water is placed in a refrigerator for cooling for 20-30 min, then the compressed mask base cloth is placed in the cooled essence water to be soaked and spread, and the mask is applied to a face after being sun-dried, and the phase change temperature of the core material dodecanol and decanoic acid in the cooling and repairing microcapsule after compounding is 5-8 ℃, so that the temperature of the mask can be kept at a low temperature state for a long time by utilizing the phase change property of the phase change material in the core material, the mask is prevented from reaching the face temperature quickly, and the cooling and calming effects of the mask on the skin are effectively improved.
Meanwhile, the wall material of the cooling repair microcapsule adopts a temperature-sensitive molecularly imprinted polymer which takes L-menthol as a template molecule and chitosan-N-isopropyl acrylamide copolymer as a functional monomer. Because N-isopropyl acrylamide has the temperature-sensitive characteristic of thermal shrinkage, when the temperature is higher than the critical temperature (LCST), the wall material polymer is in a shrinkage memory state, the functional monomer and the template molecule L-menthol are close to each other, the hydrogen bond effect is enhanced, and the L-menthol is not easy to release; when the temperature is lower than LCST, the wall material polymer is in a swelling memory loss state, the functional monomer and the L-menthol are mutually separated, and the hydrogen bond action is broken, so that the L-menthol is in a free state and can be released from the wall material; when the temperature rises again, the wall material polymer can recover the memory function of the L-menthol and adsorb the L-menthol again; the release and adsorption performance of the wall material to the L-menthol under the temperature control is utilized to realize the controlled release of the L-menthol in the low-temperature aqueous solution. According to the invention, after chitosan and N-isopropyl acrylamide are subjected to graft copolymerization, the LCST is about 20 ℃, so that when the compressed mask base cloth is soaked in cooled essence water and then is applied to the face, the wall material polymer can be kept in a swelling state continuously under the low-temperature action maintained by the phase change material of the core material, and the L-menthol can be released continuously, thereby playing the effects of cooling, sterilizing and relieving itching and calming on the skin after being dried in the sun. And in the placing process of the compressed mask base cloth, the cooling and repairing microcapsules are not in a water environment, so that the L-menthol in the wall material can not be released, and the volatilization failure of the L-menthol in the storing process is avoided.
Preferably, the mass concentration of the acetic acid solution in the step (1) is 8-12%, and the addition ratio of the chitosan, the acetic acid solution, the N-isopropylacrylamide and the ceric ammonium nitrate is (13-14 g): (0.8-1L): (21-22 g): 1g of the total weight of the composition.
Preferably, in the step (2), the addition ratio of the chitosan-N-isopropyl acrylamide copolymer, water and the ethanol solution of L-menthol is (10-20 g): 1L: (10-20 mL); the concentration of the added ethanol solution of the L-menthol is 0.2-0.4 g/mL.
Preferably, the mass ratio of the dodecanol, the decanoic acid and the continuous phase in the step (3) is (1.5-2): 1: (10-20). By adopting the addition ratio, the wall thickness of the prepared cooling repair microcapsule can be kept in a proper range, the L-menthol in the wall material can be released by swelling at low temperature, and the microcapsule is not broken due to excessive swelling to cause core material leakage.
Preferably, the adding amount of the emulsifier in the step (3) is 3-4% of the mass of the continuous phase, and the mass ratio of the cross-linking agent to the emulsifier is (1.5-2): 1.
preferably, the emulsifier in the step (3) comprises a mixture of 1: (15-30) xanthan gum and octylphenol polyoxyethylene ether; the cross-linking agent is epichlorohydrin.
Preferably, the loading capacity of the cooling repairing microcapsule on the compressed mask base cloth is 15-20 g/m2。
Preferably, the essence water comprises the following components in parts by weight: 5-8 parts of bisabolol, 5-8 parts of sodium hyaluronate, 10-20 parts of glycerol, 10-20 parts of 1, 3-butanediol, 10-20 parts of PEG-60 hydrogenated castor oil, 0.1-0.2 part of citric acid, 0.1-0.2 part of methyl hydroxybenzoate and 900-1000 parts of water.
The invention also adds the bisabolol with the functions of diminishing inflammation, relieving, resisting bacteria and relieving itching, the sodium hyaluronate with the functions of moisturizing, the glycerin and other components into the essence water, and the essence water is used for soaking and compressing the mask base cloth to be applied on the face, so that the skin injury after being dried in the sun can be effectively relieved, the damaged part can be repaired, the moisture can be timely supplemented to the bottom of the skin, a protective film is formed on the surface of the skin to effectively lock the moisture, and the skin injury after being dried in the sun can be reduced.
Therefore, the invention has the following beneficial effects:
(1) the cooling and repairing microcapsule taking the phase-change material as the core material and the temperature-sensitive molecularly imprinted polymer as the wall material is loaded on the compressed mask base cloth, so that the temperature of the mask can be kept at a low temperature state for a long time by utilizing the property of the phase-change material in the core material during phase change, the mask is prevented from reaching the facial temperature quickly, and the cooling and calming effects of the mask on the skin are effectively improved;
(2) the wall material of the cooling repairing microcapsule adopts a temperature-sensitive molecularly imprinted polymer which takes L-menthol as a template molecule and chitosan N-isopropyl acrylamide copolymer as a functional monomer, and the release and adsorption performance of the molecularly imprinted polymer wall material on the L-menthol under temperature control is utilized to realize the controlled release of the L-menthol under a low-temperature environment maintained by a core material, so that the L-menthol of an icy component is prevented from volatilizing in the storage process, and the effective storage time of the mask is prolonged.
Detailed Description
The invention is further described with reference to specific embodiments.
Example 1:
the after-sun calming and relieving mask comprises compressed mask base cloth and essence water which are packaged independently, wherein the essence water comprises the following components in parts by weight: 6 parts of bisabolol, 7 parts of sodium hyaluronate, 15 parts of glycerol, 15 parts of 1, 3-butanediol, 15 parts of PEG-60 hydrogenated castor oil, 0.15 part of citric acid, 0.15 part of methyl hydroxybenzoate and 950 parts of water.
The basis weight of the compressed mask is 45g/m2The pure cotton spunlace non-woven fabric is prepared by loading a cooling repairing microcapsule on a compressed mask base fabric, and the preparation method of the cooling repairing microcapsule comprises the following steps:
(1) dissolving chitosan in an acetic acid solution with the mass concentration of 10%, introducing nitrogen to remove oxygen, and adding N-isopropylacrylamide and ceric ammonium nitrate into the solution, wherein the adding proportion of the chitosan, the acetic acid solution, the N-isopropylacrylamide and the ceric ammonium nitrate is 13.5 g: 0.9L: 21.5 g: 1g, reacting at 30 ℃ for 2h to obtain a copolymer of chitosan and N-isopropyl acrylamide;
(2) adding the chitosan-N-isopropyl acrylamide copolymer into water, stirring for 1.5h at 12 ℃, then adding an ethanol solution of L-menthol with the concentration of 0.4g/mL, wherein the adding ratio of the chitosan-N-isopropyl acrylamide copolymer, the water and the ethanol solution of the L-menthol is 15 g: 1L: 15mL, and continuously stirring for 4h to obtain a continuous phase;
(3) adding dodecanol and decanoic acid into the continuous phase, wherein the mass ratio of the dodecanol to the decanoic acid to the continuous phase is 1.8: 1: 15; and adding the mixture in a mass ratio of 1: 20, the total mass of the xanthan gum and the octylphenol polyoxyethylene ether is 3.5 percent of the mass of the continuous phase, the pH value of the system is adjusted to 9.2 by using a sodium hydroxide solution after stirring and dispersing for 1.5h, epichlorohydrin with the total mass of 1.8 times of the total mass of the xanthan gum and the octylphenol polyoxyethylene ether is added dropwise, the reaction is carried out for 15h at 70 ℃, and the obtained product is filtered, washed and dried to obtain the cooling repairing microcapsule.
The loading method of the cooling repair microcapsule comprises the following steps: adding the cooling and repairing microcapsules into a 3 wt% sodium carboxymethylcellulose solution, and uniformly stirring to obtain a slurry, wherein the mass fraction of the cooling and repairing microcapsules in the slurry is 40%; coating the slurry on the surface of the pure cotton spunlace non-woven fabric to ensure that the loading capacity of the cooling and repairing microcapsules is 18g/m2And drying to prepare a compressed mask to obtain the compressed mask base cloth.
Example 2:
the after-sun calming and relieving mask comprises compressed mask base cloth and essence water which are packaged independently, wherein the essence water comprises the following components in parts by weight: 5 parts of bisabolol, 5 parts of sodium hyaluronate, 10 parts of glycerol, 10 parts of 1, 3-butanediol, 10 parts of PEG-60 hydrogenated castor oil, 0.1 part of citric acid, 0.1 part of methyl hydroxybenzoate and 900 parts of water.
The basis weight of the compressed mask is 45g/m2The pure cotton spunlace non-woven fabric is prepared by loading a cooling repairing microcapsule on a compressed mask base fabric, and the preparation method of the cooling repairing microcapsule comprises the following steps:
(1) dissolving chitosan in an acetic acid solution with the mass concentration of 8%, introducing nitrogen to remove oxygen, and adding N-isopropylacrylamide and ceric ammonium nitrate into the solution, wherein the addition ratio of the chitosan to the acetic acid solution to the N-isopropylacrylamide to the ceric ammonium nitrate is 13 g: 1L: 21 g: 1g, reacting at 25 ℃ for 2.5h to obtain a copolymer of chitosan and N-isopropylacrylamide;
(2) adding the chitosan-N-isopropyl acrylamide copolymer into water, stirring for 2 hours at 10 ℃, then adding an ethanol solution of L-menthol with the concentration of 0.2g/mL, wherein the adding proportion of the chitosan-N-isopropyl acrylamide copolymer, the water and the ethanol solution of the L-menthol is 10 g: 1L: 10mL, and continuously stirring for 5h to obtain a continuous phase;
(3) adding dodecanol and decanoic acid into the continuous phase, wherein the mass ratio of the dodecanol to the decanoic acid to the continuous phase is 1.5: 1: 10; and adding the mixture in a mass ratio of 1: 15, the total mass of the xanthan gum and the octylphenol polyoxyethylene ether is 3% of the mass of the continuous phase, the pH value of the system is adjusted to 8.5 by using a sodium hydroxide solution after stirring and dispersing for 1h, epichlorohydrin with the total mass of 1.5 times of the total mass of the xanthan gum and the octylphenol polyoxyethylene ether is dripped, the reaction is carried out for 20h at 65 ℃, and the obtained product is filtered, washed and dried to obtain the cooling repairing microcapsule.
The loading method of the cooling repair microcapsule comprises the following steps: adding the cooling and repairing microcapsules into a 3 wt% sodium carboxymethylcellulose solution, and uniformly stirring to obtain a slurry, wherein the mass fraction of the cooling and repairing microcapsules in the slurry is 40%; coating the slurry on the surface of the pure cotton spunlace non-woven fabric to ensure that the loading capacity of the cooling and repairing microcapsules is 15g/m2And drying to prepare a compressed mask to obtain the compressed mask base cloth.
Example 3:
the after-sun calming and relieving mask comprises compressed mask base cloth and essence water which are packaged independently, wherein the essence water comprises the following components in parts by weight: 8 parts of bisabolol, 8 parts of sodium hyaluronate, 20 parts of glycerol, 20 parts of 1, 3-butanediol, 20 parts of PEG-60 hydrogenated castor oil, 0.2 part of citric acid, 0.2 part of methyl hydroxybenzoate and 1000 parts of water.
The basis weight of the compressed mask is 45g/m2The pure cotton spunlace non-woven fabric is prepared by loading a cooling repairing microcapsule on a compressed mask base fabric, and the preparation method of the cooling repairing microcapsule comprises the following steps:
(1) dissolving chitosan in an acetic acid solution with the mass concentration of 12%, introducing nitrogen to remove oxygen, and adding N-isopropylacrylamide and ceric ammonium nitrate into the solution, wherein the adding proportion of the chitosan, the acetic acid solution, the N-isopropylacrylamide and the ceric ammonium nitrate is 14 g: 0.8L: 22 g: 1g, reacting at 35 ℃ for 1.5h to obtain a copolymer of chitosan and N-isopropylacrylamide;
(2) adding the chitosan-N-isopropyl acrylamide copolymer into water, stirring for 1h at 15 ℃, then adding an ethanol solution of L-menthol with the concentration of 0.4g/mL, wherein the adding ratio of the chitosan-N-isopropyl acrylamide copolymer, the water and the ethanol solution of the L-menthol is 20 g: 1L: 20mL, and continuously stirring for 3h to obtain a continuous phase;
(3) adding dodecanol and decanoic acid into the continuous phase, wherein the mass ratio of the dodecanol to the decanoic acid to the continuous phase is 2: 1: 20; and adding the mixture in a mass ratio of 1: 30, wherein the total mass of the xanthan gum and the octylphenol polyoxyethylene ether is 4% of the mass of the continuous phase, the pH value of the system is adjusted to 9.5 by using a sodium hydroxide solution after stirring and dispersing for 2 hours, epichlorohydrin with 2 times of the total mass of the xanthan gum and the octylphenol polyoxyethylene ether is dripped, the reaction is carried out for 10 hours at 75 ℃, and the obtained product is filtered, washed and dried to obtain the cooling repairing microcapsule.
The loading method of the cooling repair microcapsule comprises the following steps: adding the cooling and repairing microcapsules into a 3 wt% sodium carboxymethylcellulose solution, and uniformly stirring to obtain a slurry, wherein the mass fraction of the cooling and repairing microcapsules in the slurry is 40%; coating the slurry on the surface of the pure cotton spunlace non-woven fabric to ensure that the loading capacity of the cooling and repairing microcapsules is 20g/m2And drying to prepare a compressed mask to obtain the compressed mask base cloth.
Comparative example 1:
the preparation method of the cooling-repair microcapsule in comparative example 1 includes the steps of:
(1) dissolving chitosan in an acetic acid solution with the mass concentration of 10%, introducing nitrogen to remove oxygen, and adding N-isopropylacrylamide and ceric ammonium nitrate into the solution, wherein the adding proportion of the chitosan, the acetic acid solution, the N-isopropylacrylamide and the ceric ammonium nitrate is 13.5 g: 0.9L: 21.5 g: 1g, reacting at 30 ℃ for 2h to obtain a copolymer of chitosan and N-isopropyl acrylamide;
(2) adding the chitosan-N-isopropyl acrylamide copolymer into water, stirring for 1.5h at 12 ℃, then adding an ethanol solution of L-menthol with the concentration of 0.4g/mL, wherein the adding ratio of the chitosan-N-isopropyl acrylamide copolymer, the water and the ethanol solution of the L-menthol is 15 g: 1L: 15mL, and continuously stirring for 4h to obtain a continuous phase;
(3) adding a mixture of the following components in a mass ratio of 1: 20, the total mass of the xanthan gum and the octylphenol polyoxyethylene ether is 3.5 percent of the mass of the continuous phase, the pH value of the system is adjusted to 9.2 by using a sodium hydroxide solution after stirring and dispersing for 1.5h, epichlorohydrin with the total mass of 1.8 times of the total mass of the xanthan gum and the octylphenol polyoxyethylene ether is added dropwise, the reaction is carried out for 15h at 70 ℃, and the obtained product is filtered, washed and dried to obtain the cooling repairing microcapsule.
The rest is the same as in example 1.
Comparative example 2:
the preparation method of the cooling-repair microcapsule in comparative example 2 includes the steps of:
(1) dissolving chitosan in an acetic acid solution with the mass concentration of 10%, introducing nitrogen to remove oxygen, and adding N-isopropylacrylamide and ceric ammonium nitrate into the solution, wherein the adding proportion of the chitosan, the acetic acid solution, the N-isopropylacrylamide and the ceric ammonium nitrate is 13.5 g: 0.9L: 21.5 g: 1g, reacting at 30 ℃ for 2h to obtain a copolymer of chitosan and N-isopropyl acrylamide;
(2) adding the chitosan-N-isopropyl acrylamide copolymer into water, stirring for 1.5h at 12 ℃, then adding an ethanol solution of L-menthol with the concentration of 0.4g/mL, wherein the adding ratio of the chitosan-N-isopropyl acrylamide copolymer, the water and the ethanol solution of the L-menthol is 15 g: 1L: 15mL, and continuously stirring for 4h to obtain a continuous phase;
(3) adding dodecanol into the continuous phase, wherein the mass ratio of the dodecanol to the continuous phase is 1.8: 15; and adding the mixture in a mass ratio of 1: 20, the total mass of the xanthan gum and the octylphenol polyoxyethylene ether is 3.5 percent of the mass of the continuous phase, the pH value of the system is adjusted to 9.2 by using a sodium hydroxide solution after stirring and dispersing for 1.5h, epichlorohydrin with the total mass of 1.8 times of the total mass of the xanthan gum and the octylphenol polyoxyethylene ether is added dropwise, the reaction is carried out for 15h at 70 ℃, and the obtained product is filtered, washed and dried to obtain the cooling repairing microcapsule.
The rest is the same as in example 1.
Comparative example 3:
the preparation method of the cooling-repair microcapsule in comparative example 3 includes the steps of:
(1) adding chitosan into an acetic acid solution with the mass concentration of 10%, stirring for 1.5h, then adding an ethanol solution of L-menthol with the concentration of 0.4g/mL, wherein the adding ratio of the chitosan to the acetic acid solution to the ethanol solution of L-menthol is 15 g: 1L: 15mL, and continuously stirring for 4h to obtain a continuous phase;
(2) adding dodecanol and decanoic acid into the continuous phase, wherein the mass ratio of the dodecanol to the decanoic acid to the continuous phase is 1.8: 1: 15; and adding the mixture in a mass ratio of 1: 20, the total mass of the xanthan gum and the octylphenol polyoxyethylene ether is 3.5 percent of the mass of the continuous phase, the pH value of the system is adjusted to 9.2 by using a sodium hydroxide solution after stirring and dispersing for 1.5h, epichlorohydrin with the total mass of 1.8 times of the total mass of the xanthan gum and the octylphenol polyoxyethylene ether is added dropwise, the reaction is carried out for 15h at 70 ℃, and the obtained product is filtered, washed and dried to obtain the cooling repairing microcapsule.
The rest is the same as in example 1.
The essence solutions of the above examples and comparative examples were placed in a refrigerator for 30min, taken out, the corresponding compressed mask base cloths were soaked in the cooled essence solution and then soaked open, and then applied to the human face for 30min, and the surface temperature of the mask was measured every 5min, with the results shown in table 1.
Table 1: and testing the temperature change of the mask.
As can be seen from table 1, in examples 1 to 3, the cooling and repairing microcapsules of the present invention are loaded on the compressed mask base fabric, and the temperature of the mask can be maintained in a low range within 30min, so that the skin can be cooled and calmed for a long time; when the cooling repairing microcapsule in the comparative example 1 is prepared, the phase-change materials of dodecanol and decanoic acid are not added, the temperature of the mask can be raised to be above 20 ℃ within 15min, the low-temperature duration is short, and the cooling and calming effects on the skin are weakened; in the core material emulsion of the comparative example 2, only dodecanol is added as a phase change material, and no capric acid is added, so that the phase change temperature of dodecanol is higher, the heating speed of the facial mask is also higher within 20min, the low-temperature duration is also shorter than that of the facial mask in the example 1, and the cooling and calming effects on the skin cannot be improved.
The compressed mask base cloths of 2cm by 2cm in the above examples and comparative examples were soaked in 100mL of the corresponding essence water at 15 ℃, 20 ℃ and 25 ℃ for 30min, and the content of L-menthol in the essence water was measured by high performance liquid chromatography every 10min, and the results are shown in table 2.
Table 2: and (4) testing the release amount of the L-menthol.
As can be seen from table 2, in examples 1 to 3, the cooling repair microcapsules prepared by using the method of the present invention can effectively release L-menthol at low temperature, the release amount of L-menthol decreases with the increase of temperature, and L-menthol is not substantially released at 30 ℃. In contrast, the wall material of the cooling and repairing microcapsule in the comparative example 3 does not contain N-isopropylacrylamide, the cooling and repairing microcapsule has no temperature responsiveness, and the release amount of the L-menthol at any temperature is small.
The efficacy evaluation of the after-sun sedation and soothing mask in the above examples and comparative examples was carried out by the following specific test methods: 120 subjects with age of 20-40 years and skin burning, redness and swelling after the sun shine on the face are selected and divided into 6 groups of 20 persons, and the efficacy of each group of subjects is evaluated by using the after-sun calming and relieving mask in the examples 1-3 and the comparative examples 1-3 respectively. The use method of the facial mask comprises the following steps: placing the essence water in a refrigerator for cooling for 30min, taking out, soaking the compressed facial mask base cloth in the cooled essence water, applying on face for 20min, removing, cleaning, 1 night for 1 time, continuously trying for 3 days, photographing, and archiving. The efficacy evaluation method comprises the following steps: comparing the day 1 and day 3 photographs and querying the subjects for a sensation of use wherein the elimination of burning, redness, and swelling of the skin is significant; it is effective in relieving skin burning sensation, redness, and swelling; the skin problems that did not improve were ineffective. Meanwhile, the subjects evaluated the sensation of coolness when the facial mask was used, more than 80% of the subjects felt the facial mask to have good sensation of coolness, the duration of coolness was rated as "+++", 60% -80% was rated as "+++", and less than 60% was rated as "+", and the results of trials are shown in table 3.
Table 3: and (5) evaluating the efficacy of the after-sun calming and relieving mask.
As can be seen from table 3, the after-sun sedation and relaxation facial masks loaded with the cooling repair microcapsules of the present invention in examples 1 to 3 have good cooling feeling and good sedation and relaxation efficacy when used. The phase-change materials are not added into the cooling repairing microcapsules in the comparative examples 1 and 2 or the proportion of the phase-change materials is changed, so that the cool feeling and the calming and relieving effects of the mask are reduced; in comparative example 3, the use of the cooling-repairing microcapsules having no temperature-responsive wall material failed to release L-menthol, and the cooling sensation and the sedative-soothing effect of the mask were also reduced.
Claims (8)
1. The after-sun calming and relieving mask is characterized by comprising a compressed mask base cloth and essence water which are packaged independently, wherein cooling repairing microcapsules are loaded on the compressed mask base cloth, and the preparation method of the cooling repairing microcapsules comprises the following steps:
(1) dissolving chitosan in an acetic acid solution, introducing nitrogen to remove oxygen, adding N-isopropylacrylamide and ceric ammonium nitrate into the solution, reacting for 1.5-2.5 h at 25-35 ℃, adding acetone to precipitate, and filtering, washing and drying the product to obtain a chitosan-N-isopropylacrylamide copolymer;
(2) adding the chitosan-N-isopropyl acrylamide copolymer into water, stirring for 1-2 h at 10-15 ℃, then adding an ethanol solution of L-menthol, and continuously stirring for 3-5 h to obtain a continuous phase;
(3) adding dodecanol and decanoic acid into the continuous phase, adding an emulsifier, stirring and dispersing for 1-2 h, adjusting the pH of the system to 8.5-9.5 by using a sodium hydroxide solution, dropwise adding a cross-linking agent, reacting for 10-20 h at 65-75 ℃, filtering, washing and drying the obtained product to obtain the cooling and repairing microcapsule.
2. The after-sun calming and relieving mask as claimed in claim 1, wherein the mass concentration of the acetic acid solution in step (1) is 8-12%, and the addition ratio of the chitosan, the acetic acid solution, the N-isopropylacrylamide and the ceric ammonium nitrate is (13-14 g): (0.8-1L): (21-22 g): 1g of the total weight of the composition.
3. The after-sun calming and relieving mask as claimed in claim 1, wherein in step (2), the addition ratio of the chitosan-N-isopropyl acrylamide copolymer, water and the ethanol solution of L-menthol is (10-20 g): 1L: (10-20 mL); the concentration of the added ethanol solution of the L-menthol is 0.2-0.4 g/mL.
4. The post-basking calming and relieving mask as claimed in claim 1, wherein the mass ratio of the dodecanol, the decanoic acid and the continuous phase in step (3) is (1.5-2): 1: (10-20).
5. The after-sun calming and relieving mask as claimed in claim 1, wherein the addition amount of the emulsifier in the step (3) is 3-4% of the mass of the continuous phase, and the mass ratio of the cross-linking agent to the emulsifier is (1.5-2): 1.
6. the mask according to claim 1 or 5, wherein the emulsifier in step (3) comprises a mixture of 1: (15-30) xanthan gum and octylphenol polyoxyethylene ether; the cross-linking agent is epichlorohydrin.
7. The after-sun calming and relieving mask as claimed in claim 1, wherein the loading capacity of the cooling and repairing microcapsules on the compressed mask base cloth is 15-20 g/m2。
8. The post-basking calming and relieving mask as claimed in claim 1, wherein the essential water comprises the following components in parts by weight: 5-8 parts of bisabolol, 5-8 parts of sodium hyaluronate, 10-20 parts of glycerol, 10-20 parts of 1, 3-butanediol, 10-20 parts of PEG-60 hydrogenated castor oil, 0.1-0.2 part of citric acid, 0.1-0.2 part of methyl hydroxybenzoate and 900-1000 parts of water.
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| CN202011416489.2A CN112370375A (en) | 2020-12-07 | 2020-12-07 | After-sun calming and relieving mask |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1883438A (en) * | 2005-06-21 | 2006-12-27 | 香港理工大学 | Temperature responsive intelligent facial mask and method for preparing same |
| CN101392461A (en) * | 2008-10-15 | 2009-03-25 | 清华大学深圳研究生院 | Phase change energy storage low temperature face mask substrate material and preparation method thereof |
| CN101638485A (en) * | 2009-07-17 | 2010-02-03 | 淮阴师范学院 | Method for synthesizing temperature sensitive degradation PNIPAM/CMCS microgel in nuclear shell structure |
| CN111803417A (en) * | 2020-07-25 | 2020-10-23 | 朱宇 | Plant extraction type whitening, moisturizing, antibacterial and skin-care mask |
-
2020
- 2020-12-07 CN CN202011416489.2A patent/CN112370375A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1883438A (en) * | 2005-06-21 | 2006-12-27 | 香港理工大学 | Temperature responsive intelligent facial mask and method for preparing same |
| CN101392461A (en) * | 2008-10-15 | 2009-03-25 | 清华大学深圳研究生院 | Phase change energy storage low temperature face mask substrate material and preparation method thereof |
| CN101638485A (en) * | 2009-07-17 | 2010-02-03 | 淮阴师范学院 | Method for synthesizing temperature sensitive degradation PNIPAM/CMCS microgel in nuclear shell structure |
| CN111803417A (en) * | 2020-07-25 | 2020-10-23 | 朱宇 | Plant extraction type whitening, moisturizing, antibacterial and skin-care mask |
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