CN114053202B - Sun-screening composition and sun-screening agent - Google Patents

Sun-screening composition and sun-screening agent Download PDF

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CN114053202B
CN114053202B CN202111651582.6A CN202111651582A CN114053202B CN 114053202 B CN114053202 B CN 114053202B CN 202111651582 A CN202111651582 A CN 202111651582A CN 114053202 B CN114053202 B CN 114053202B
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pearl powder
surface modified
sun
modified pearl
sunscreen composition
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CN114053202A (en
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姚国英
余燕云
钟杰
马萍
蔡鑫芬
霍刚
张丽华
沈真
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Osmun Biological Co ltd
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/96Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution
    • A61K8/98Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution of animal origin
    • A61K8/987Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution of animal origin of species other than mammals or birds
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/27Zinc; Compounds thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/29Titanium; Compounds thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/58Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing atoms other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur or phosphorus
    • A61K8/585Organosilicon compounds
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q17/00Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
    • A61Q17/04Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00Preparations for care of the skin
    • A61Q19/02Preparations for care of the skin for chemically bleaching or whitening the skin
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/41Particular ingredients further characterized by their size
    • A61K2800/412Microsized, i.e. having sizes between 0.1 and 100 microns
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/60Particulates further characterized by their structure or composition
    • A61K2800/61Surface treated
    • A61K2800/612By organic compounds

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  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
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  • Cosmetics (AREA)

Abstract

The application provides a sun-screening composition and a sun-screening agent, and belongs to the technical field of cosmetics. A sunscreen composition comprising: 0.5-5 wt% of surface modified pearl powder and 15-45 wt% of physical sun-screening agent. The contact angle of the surface modified pearl powder is 100-140 degrees. The particle size of the surface modified pearl powder is 1-10 mu m. The surface modified pearl powder with proper particle size is selected to be compounded with the physical sun-screening agent, so that the sun-screening index of the sun-screening product added with the physical sun-screening agent is effectively improved. The surface modified pearl powder has good compatibility in a sun-proof product system added with a physical sun-proof agent, and can keep the activity efficacy of pearls.

Description

Sun-screening composition and sun-screening agent
Technical Field
The application relates to the technical field of cosmetics, in particular to a sun-screening composition and a sun-screening agent.
Background
In hot summer outdoors, ultraviolet rays in sunlight can influence the cuticle and dermis layers of the skin, so that the skin is sunburned, peeled, sunburned and the like, and the skin is damaged. And the barrier function of the skin after sun-drying is weakened, the water loss is serious, and ultraviolet rays can induce skin cells to release various inflammatory mediators to excite inflammatory reaction. Meanwhile, the ultraviolet rays generate excessive free radicals inside and outside the epidermal cells, so that abnormal cell activities are caused, and skin aging is promoted. The damage to human health caused by excessive ultraviolet radiation is increasingly aggravated, and protection against ultraviolet radiation is an extremely urgent problem. Therefore, sun protection is very important, and sun protection products are becoming daily skin care products. The development of safe and effective sun protection products is a potential branch of modern fine chemical engineering. Skin-nourishing type sun cream with both sun-proof and skin-care functions is gradually favored in recent years. With the development of the global environment-friendly industry, more areas in the sea are forbidden to use sun-screening products in the future, the sun-screening product market is affected, and the components of the sun-screening products in the future are more environment-friendly. It is expected that sun protection products will gradually evolve towards safe and environment-friendly.
The physical sun protection has a relatively wide sun protection spectrum, can refract and reflect various ultraviolet rays, and has relatively strong sun protection capability. And is inert in itself, does not photodegradation, and does not have the problem of absorption by the skin. The physical sun-screening agent can be coated for sun screening without waiting and frequent coating. Safe and efficient, and is very popular with consumers.
At present, most common sun cream is prepared by crushing pearls and then directly adding the crushed pearls into the sun cream, and the prepared pearl powder particles have large specific surface area, are easy to agglomerate, are not easy to absorb, even easily block pores to cause folliculitis, and influence the exertion of the efficacy of the pearl powder. Not only the sun-screening efficacy of the sun-screening composition cannot be improved, but also the skin feel of the sun-screening composition is affected to a certain extent.
Disclosure of Invention
The application provides a sun-screening composition and a sun-screening agent, which can improve the compatibility of pearl powder in the sun-screening agent and improve the coordination with a physical sun-screening system.
Embodiments of the present application are implemented as follows:
in a first aspect, the present examples provide a sunscreen composition comprising: 0.5-5 wt% of surface modified pearl powder and 15-45 wt% of physical sun-screening agent.
The contact angle of the surface modified pearl powder is 100-140 degrees.
The particle size of the surface modified pearl powder is 1-10 mu m.
In the technical scheme, the surface modified pearl powder with proper particle size is selected to be compounded with the physical sun-screening agent, so that the sun-screening index of the sun-screening product added with the physical sun-screening agent is effectively improved. The surface modified pearl powder has good compatibility in a sun-proof product system added with a physical sun-proof agent, and can keep the activity efficacy of pearls.
With reference to the first aspect, in a first possible example of the first aspect of the present application, the above surface-modified pearl powder is lauroyl lysine surface-modified pearl powder or triethoxy octyl silane surface-modified pearl powder.
With reference to the first aspect, in a second possible example of the first aspect of the present application, the above-mentioned surface-modified pearl powder is lauroyl lysine surface-modified pearl powder, and the lauroyl lysine surface-modified pearl powder is composed of 95 to 99wt% of pearl powder and 1 to 5wt% of lauroyl lysine.
Alternatively, the particle size of lauroyl lysine surface modified pearl powder is 5-10 μm.
Alternatively, lauroyl lysine surface-modified pearl powder is prepared by the following method:
mixing the pearl powder water solution with pH of 11.5-12.5 and lauroyl lysine powder to obtain a first mixed solution, preserving heat of the first mixed solution at 70-90 ℃ for 20-40 min to obtain a second mixed solution, regulating the pH value of the second mixed solution to 5.5-6.5, and continuously preserving heat at 70-90 ℃ for 20-40 min while stirring.
Optionally, the mass percent of the pearl powder in the pearl powder aqueous solution is 10-15 wt%.
In the above examples, the lauroyl lysine surface-modified pearl powder prepared by the above method is stable, and can achieve better compatibility with physical sunscreens, and increase the sun protection factor of the prepared sunscreens.
In combination with the first aspect, in a third possible example of the first aspect of the present application, the above surface-modified pearl powder is a triethoxy octyl silane surface-modified pearl powder, the triethoxy octyl silane surface-modified pearl powder being composed of 97 to 99.6wt% of pearl powder and 0.4 to 3wt% of triethoxy octyl silane.
Optionally, the particle size of the triethoxy octyl silane surface modified pearl powder is 1-5 mu m.
Alternatively, the triethoxy octyl silane surface modified pearl powder is prepared by the following method:
spraying ethanol solution of triethoxy octyl silane on the surface of pearl powder under stirring, stirring and drying.
Alternatively, the mass percent of triethoxy octyl silane in the ethanol solution of triethoxy octyl silane is 20 to 40 weight percent.
In the above examples, the triethoxy octyl silane surface modified pearl powder prepared by the above method is stable, and can achieve better compatibility with physical sunscreens and increase the sun protection index of the prepared sunscreens.
In a fourth possible example of the first aspect of the present application, in combination with the first aspect, the above-mentioned physical sunscreens comprise an oily dispersion of zinc oxide and/or an oily dispersion of titanium dioxide.
Alternatively, the physical sunscreens consist of an oily dispersion of zinc oxide and an oily dispersion of titanium dioxide.
Alternatively, the physical sun-screening agent consists of an oily dispersion of zinc oxide and an oily dispersion of titanium dioxide in a mass ratio of 1:2.
In combination with the first aspect, in a fifth possible example of the first aspect of the present application, the above-described sunscreen composition further comprises 2 to 7wt% of an emulsifier, 5 to 15wt% of an emollient, 0.2 to 2wt% of a film former, 5 to 15wt% of a humectant, 0.2 to 0.5wt% of a preservative, and the balance water.
With reference to the first aspect, in a sixth possible example of the first aspect of the present application, the emulsifier includes any one or more of lauryl PEG-9 polydimethylsiloxane ethyl polydimethylsiloxane, PEG-10 polydimethylsiloxane, polydimethylsiloxane PEG-10/15 crosslinked polymer, sorbitan olive oleate, cetyl PEG/PPG-10/1 polydimethylsiloxane, sorbitan sesquioleate, polyglyceryl-3 diisostearate, polyglyceryl-6 polyhydroxystearate, and polyglyceryl-4 diisostearate.
Emollients include any one or more of cyclopentadimethicone, caprylic/capric triglyceride, dioctyl carbonate, and coco-caprylate/caprate.
The film forming agent comprises any one or more of acrylic acid (ester)/polydimethylsiloxane copolymer and VP/eicosene copolymer.
The humectant comprises any one or more of glycerol, butanediol and 1, 3-propylene glycol.
The preservative comprises any one or more of phenoxyethanol, p-hydroxyacetophenone and methylparaben.
In combination with the first aspect, in a seventh possible example of the first aspect of the present application, the above-mentioned sunscreen composition further comprises 1 to 5wt% of a skin feel modifier, 0.2 to 5wt% of a thickener, 0.01 to 0.1wt% of a chelating agent, 0.5 to 2wt% of an emulsion stabilizer, and 0.1 to 2wt% of a skin protectant.
In the above examples, the sunscreen composition of the present application can produce a sunscreen agent having high-efficiency sunscreen effect, and also having the effects of whitening, removing spots, improving brightness and lubrication, and refreshing skin feel.
With reference to the first aspect, in an eighth possible example of the first aspect of the present application, the above-mentioned skin feel modifier includes silica and/or HDI/trimethylol hexyl lactone crosslinked polymer.
The thickener comprises any one or more of disteardimonium hectorite, dextrin palmitate, and dimethyl silyl silica.
The chelating agent includes disodium EDTA.
The emulsion stabilizer comprises sodium chloride and/or magnesium sulfate.
The skin protectant comprises bisabolol and/or rhizoma Zingiberis recens extract.
In a second aspect, the present examples provide a sunscreen comprising the above-described sunscreen composition.
In the technical scheme, the sunscreen agent system is stable, and has good sunscreen, whitening, freckle removing and brightening effects.
Detailed Description
Embodiments of the present application will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only for illustration of the present application and should not be construed as limiting the scope of the present application. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
The following is a specific description of a sunscreen composition and sunscreen agent according to embodiments of the present application:
the present application provides a sunscreen composition comprising: 0.5-5 wt% of surface modified pearl powder and 15-45 wt% of physical sun-screening agent.
The contact angle of the surface modified pearl powder is 100-140 degrees.
Optionally, the surface modified pearl powder is lauroyl lysine surface modified pearl powder or triethoxy octyl silane surface modified pearl powder.
The particle size of the surface modified pearl powder is 1-10 mu m.
The particle size of the unmodified pearl powder is 0.1-2.5 mu m.
Optionally, the particle size of the unmodified pearl powder is 0.3-2.5 mu m.
Optionally, the surface modified pearl powder is lauroyl lysine surface modified pearl powder.
The lauroyl lysine surface modified pearl powder consists of 95-99 wt% of pearl powder and 1-5 wt% of lauroyl lysine.
Alternatively, the particle size of lauroyl lysine surface modified pearl powder is 5-10 μm.
Lauroyl lysine surface modified pearl powder is prepared by the following method:
s1, dispersing unmodified pearl powder into deionized water to prepare an aqueous solution of pearl powder with the mass percentage of 10-15 wt%;
s2, adjusting the pH value of the water solution of the pearl powder to 11.5-12.5 by using a sodium hydroxide solution;
s3, mixing the water solution of the pearl powder with the pH value adjusted with lauroyl lysine powder according to a proportion to prepare a first mixed solution;
s4, preserving heat of the first mixed solution at 70-90 ℃ for 20-40 min to obtain a second mixed solution;
s5, regulating the pH value of the second mixed solution to 5.5-6.5 by sulfuric acid;
s6, maintaining stirring and heat preservation for 20-40 min at 70-90 ℃ of the second mixed solution after the pH value is regulated to obtain a third mixed solution;
s7, washing, drying and crushing the third mixed solution to obtain lauroyl lysine surface modified pearl powder.
Optionally, the pH of the aqueous solution of pearl powder is adjusted to 12 with sodium hydroxide solution.
Optionally, the first mixed solution is incubated at 80℃for 30min.
Optionally, the pH of the second mixture is adjusted to 6 with sulfuric acid.
Optionally, the second mixed solution after the pH value is adjusted is kept stirring and heat-preserving for 30min at 80 ℃.
Optionally, the surface modified pearl powder is triethoxy octyl silane surface modified pearl powder.
The triethoxy octyl silane surface modified pearl powder consists of 97-99.6 wt% of pearl powder and 0.4-3 wt% of triethoxy octyl silane.
Optionally, the particle size of the triethoxy octyl silane surface modified pearl powder is 1-5 mu m.
The triethoxy octyl silane surface modified pearl powder is prepared by the following method:
s1, mixing triethoxy octyl silane and ethanol according to the proportion of 2-4:6-8 to prepare an ethanol solution of the triethoxy octyl silane;
s2, adding unmodified pearl powder into a high-speed stirrer, spraying the prepared ethanol solution of triethoxy octyl silane into the high-speed stirrer through an oil spraying tank under high-speed stirring, so that the ethanol solution of triethoxy octyl silane and the unmodified pearl powder are fully stirred and uniformly mixed;
s3, discharging the prepared powder, placing the powder in an oven, baking the powder for 4 hours at 70-105 ℃, and naturally cooling the powder to obtain the triethoxy octyl silane surface modified pearl powder.
The ethanol solution of the triethoxycyclopedia is prepared and used immediately.
Physical sunscreens include oily dispersions of zinc oxide and/or oily dispersions of titanium dioxide.
Alternatively, the physical sunscreens consist of an oily dispersion of zinc oxide and an oily dispersion of titanium dioxide.
Alternatively, the physical sun-screening agent consists of an oily dispersion of zinc oxide and an oily dispersion of titanium dioxide in a mass ratio of 1:2.
Zinc oxide and titanium dioxide are used as two common physical sunscreens, are insoluble in water, are easy to whiten, are unevenly distributed and are easy to transmit light, and can only be solved by superposition coating, but the superposition coating is easy to cause false white and unnatural dressing.
The sun-proof composition comprises pearl powder, the pearl is a classical beauty medicinal material since ancient times, the medical macroscopical huge records of the historical generation such as the 'materia medica outline' and the 'Kaibao grass and wood' indicate that the pearl has the effects of tranquillizing, detoxifying, retaining youthful looks, moistening and tendering skin and the like, the skin is glossy and white, the beauty mechanism is that the pearl contains various amino acids and microelements required by human bodies, the nutrition components of the pearl are close to the nutrients required by human skin, the pearl is easy to be absorbed by the human bodies, and the pearl has good beauty and health care effects. Pearl powder processed from pearl is one of the most common ways to apply pearl cosmetology.
The inventor finds that the pearl powder has good isolation protection and anti-radiation effects, and the fine solid particles of the pearl powder can absorb and reflect a part of ultraviolet rays and various radiation rays, have a protective effect on radiation ray damage, can avoid sunburn formation, and have a good sun-proof effect, thereby delaying skin aging. In addition, the pearl powder can reduce the content of Malondialdehyde (MDA) which is a lipid peroxide degradation product, improve the activity of superoxide dismutase (SOD), inhibit the lipid peroxidation of the biomembrane caused by free radicals, thereby achieving the effects of resisting oxidation, delaying aging and the like.
The pearl powder is widely accepted as an anti-aging and whitening functional component in cosmetics, but has the defects of strong ionic property and easy agglomeration, and has poor compatibility in a common system.
Meanwhile, the inventor also finds that different particle sizes of the substances have a certain influence on the action and efficacy of the substances. For pearl powder, the particle size of the pearl powder added into the sun-screening composition is too large, so that the film forming property of the composition is affected, and the sun-screening index and sun-screening performance of the prepared sun-screening agent are affected; too small particle size is easy to agglomerate, easy to block pores to form a safety problem, and has a certain influence on the stability of a system after being added.
Therefore, a modification treatment is required to solve such problems. The pearl powder is mainly composed of calcium carbonate, the surface of the pearl powder is provided with a plurality of hydrophilic hydroxyl groups, and lauroyl lysine or triethoxy octyl silane is used for carrying out surface coating modification on the pearl powder. Not only the calcium carbonate and microelements contained in the pearl powder are in a closed space, but also the condensation of hydroxyl and water molecules is reduced, and the formation of hard agglomerates is lightened; meanwhile, as lauroyl lysine/triethoxy octyl silane is coated on the surface, steric hindrance repulsive force is generated, and the pearl powder aggregation is shielded. Improving the dispersibility of the water-based emulsion in a cosmetic system and avoiding damage to the system. The surface of the pearl powder is also enabled to present the lipophilicity of the coating material, so that the pearl powder can be better applied to a cosmetic system, and the compatibility with other substances is improved.
The surface modified pearl powder with proper particle size is selected to be compounded with the physical sun-screening agent, so that the sun-screening index of the sun-screening product added with the physical sun-screening agent is effectively improved. The surface modified pearl powder has good compatibility in a sun-proof product system added with a physical sun-proof agent, and can keep the activity efficacy of pearls. And on the premise of synergistically improving the sun-screening effect of the sun-screening product added with the physical sun-screening agent, the effects of whitening, removing freckles, improving brightness and lubricating can be achieved, and the prepared sun-screening product is fresh, cool, mild and free of irritation. Meanwhile, in order to prepare a sun-screening product with the same sun-screening effect, the addition proportion of the physical sun-screening agent is reduced, the use feeling of the formula is improved, and the safety of the formula is further enhanced.
The sunscreen composition further comprises 2 to 7wt% of an emulsifier, 5 to 15wt% of an emollient, 0.2 to 2wt% of a film former, 5 to 15wt% of a humectant, 0.2 to 0.5wt% of a preservative, and the balance water.
The emulsifier comprises one or more of lauryl PEG-9 polydimethylsiloxane ethyl polydimethylsiloxane, PEG-10 polydimethylsiloxane, polydimethylsiloxane PEG-10/15 crosslinked polymer, sorbitan olive oleate, cetyl PEG/PPG-10/1 polydimethylsiloxane, sorbitan sesquioleate, polyglyceryl-3 diisostearate, polyglyceryl-6 polyhydroxystearate and polyglyceryl-4 diisostearate.
Emollients include any one or more of cyclopentadimethicone, caprylic/capric triglyceride, dioctyl carbonate, and coco-caprylate/caprate.
The film forming agent comprises any one or more of acrylic acid (ester)/polydimethylsiloxane copolymer and VP/eicosene copolymer.
The humectant comprises any one or more of glycerol, butanediol and 1, 3-propylene glycol.
The preservative comprises any one or more of phenoxyethanol, p-hydroxyacetophenone and methylparaben.
Optionally, the sunscreen composition further comprises 1 to 5wt% of a skin feel modifier, 0.2 to 5wt% of a thickener, 0.01 to 0.1wt% of a chelating agent, 0.5 to 2wt% of an emulsion stabilizer, and 0.1 to 2wt% of a skin protectant.
Skin feel modifiers include silica and/or HDI/trimethylol hexyl lactone crosslinked polymers.
The thickener comprises any one or more of disteardimonium hectorite, dextrin palmitate, and dimethyl silyl silica.
The chelating agent includes disodium EDTA.
The emulsion stabilizer comprises sodium chloride and/or magnesium sulfate.
The skin protectant comprises bisabolol and/or rhizoma Zingiberis recens (ZINGIBER OFFICINALE) root extract.
The present application also provides a sunscreen comprising the above-described sunscreen composition.
The sun-screening agent system is stable, and has good sun-screening, whitening, freckle-removing and brightening effects.
The sunscreen agent is prepared by the following method:
mixing 0.5-5 parts by weight of surface modified pearl powder, 15-45 parts by weight of physical sun-screening agent, 2-7 parts by weight of emulsifying agent, 1-5 parts by weight of skin feel regulator, 0.2-5 parts by weight of thickening agent, 5-15 parts by weight of emollient and 0.2-2 parts by weight of film forming agent to prepare a first mixture, heating the first mixture to 75-80 ℃, and uniformly mixing to obtain a phase A component;
mixing 5-15 parts by weight of humectant, 0.5-2 parts by weight of emulsion stabilizer, 0.01-0.1 part by weight of chelating agent and water to prepare a second mixture, heating the second mixture to 75-80 ℃, and uniformly mixing to obtain a B phase component;
slowly adding the B phase component into the A phase component, simultaneously stirring rapidly, controlling the adding process to be 30-35 min, homogenizing for 3min by using a homogenizer after all the adding is finished, and cooling to 40-45 ℃ to obtain a third mixture;
and adding 0.1-2 parts by weight of skin protectant and 0.2-0.5 part by weight of preservative into the third mixture, continuously stirring until the mixture is completely cooled, and discharging to prepare the sun-screening agent.
The total weight of all the raw materials is 100 parts.
A sunscreen composition and sunscreen agent of the present application are described in further detail below in conjunction with the examples.
Example 1
The embodiment of the application provides a sunscreen composition and a sunscreen agent, wherein the formula of the sunscreen composition is shown in table 1.
Table 1 formulation of the sunscreen composition of example 1
Wherein, the particle diameter of the unmodified pearl powder is 0.3-2.5 mu m, the particle diameter of the lauroyl lysine surface modified pearl powder is 5-10 mu m, and the contact angle of the lauroyl lysine surface modified pearl powder is 100-140 degrees.
The sun-screening agent is prepared by the following steps:
mixing the raw materials of the phase A, heating to 75 ℃, and uniformly mixing to obtain a phase A component; mixing the raw materials of the phase B, heating to 75 ℃, and uniformly mixing to obtain a phase B component; slowly adding the B phase component into the A phase component, simultaneously stirring rapidly, controlling the adding process to be 30min, homogenizing for 3min by using a homogenizer after all the adding processes are finished, and cooling to 40 ℃ to obtain a third mixture; and adding various raw materials of the phase C into the third mixture, continuously stirring until the mixture is completely cooled, and discharging to obtain the sun-screening agent.
Example 2
The embodiment of the application provides a sunscreen composition and a sunscreen agent, wherein the formula of the sunscreen composition is shown in table 2.
Table 2 formulation of the sunscreen composition of example 2
Wherein the particle size of the unmodified pearl powder is 0.3-2.5 mu m, the particle size of the triethoxy octyl silane surface modified pearl powder is 1-5 mu m, and the contact angle of the triethoxy octyl silane surface modified pearl powder is 100-140 degrees.
The sun-screening agent is prepared by the following steps:
mixing the raw materials of the phase A, heating to 80 ℃, and uniformly mixing to obtain a phase A component; mixing the raw materials of the phase B, heating to 80 ℃, and uniformly mixing to obtain a phase B component; slowly adding the B phase component into the A phase component, simultaneously stirring rapidly, controlling the adding process at 35min, homogenizing for 3min by using a homogenizer after all adding is completed, and cooling to 45 ℃ to obtain a third mixture; and adding various raw materials of the phase C into the third mixture, continuously stirring until the mixture is completely cooled, and discharging to obtain the sun-screening agent.
Comparative example 1
Comparative examples of the present application provide a sunscreen composition and a sunscreen agent, the formulation of the sunscreen composition is shown in table 3.
Table 3 formulation of sunscreen composition of comparative example 1
The sun-screening agent is prepared by the following steps:
mixing the raw materials of the phase A, heating to 75 ℃, and uniformly mixing to obtain a phase A component; mixing the raw materials of the phase B, heating to 75 ℃, and uniformly mixing to obtain a phase B component; slowly adding the B phase component into the A phase component, simultaneously stirring rapidly, controlling the adding process to be 30min, homogenizing for 3min by using a homogenizer after all the adding processes are finished, and cooling to 40 ℃ to obtain a third mixture; and adding various raw materials of the phase C into the third mixture, continuously stirring until the mixture is completely cooled, and discharging to obtain the sun-screening agent.
Comparative example 2
Comparative examples of the present application provide a sunscreen composition and a sunscreen agent, the formulation of the sunscreen composition is shown in table 4.
Table 4 formulation of sunscreen composition of comparative example 2
Wherein the particle size of the unmodified pearl powder is 14-22 mu m, the particle size of the lauroyl lysine surface modified pearl powder is 18-45 mu m, and the contact angle of the lauroyl lysine surface modified pearl powder is 100-140 degrees.
The sun-screening agent is prepared by the following steps:
mixing the raw materials of the phase A, heating to 75 ℃, and uniformly mixing to obtain a phase A component; mixing the raw materials of the phase B, heating to 75 ℃, and uniformly mixing to obtain a phase B component; slowly adding the B phase component into the A phase component, simultaneously stirring rapidly, controlling the adding process to be 30min, homogenizing for 3min by using a homogenizer after all the adding processes are finished, and cooling to 40 ℃ to obtain a third mixture; and adding various raw materials of the phase C into the third mixture, continuously stirring until the mixture is completely cooled, and discharging to obtain the sun-screening agent.
Test example 1
The sunscreens of examples 1 to 2 and comparative examples 1 to 2 were subjected to a sunscreening performance test, the test instrument being a UV-2000S instrument, the test method being a COLIPA method, the test steps comprising: each sample was taken at 1.3mg/cm 2 Uniformly coating the mixture on a PMMA plate, coating 3 plates on each sample, standing for 15-20 min in a darkroom, and testing the SPF value and the UVAPF value in a UV-2000S instrument. After standing for one month, retesting was performed, and the test results are shown in table 5.
Table 5 results of sunscreen performance test of sunscreens of examples 1 to 2 and comparative examples 1 to 2
As is clear from the comparison between examples 1 to 2 and comparative example 1, the addition of the surface-modified pearl powder to the sunscreen agent can improve the sun protection factor of the sunscreen agent and improve the sun protection performance. And after standing for one month, retesting the sun-screening value of the sun-screening agent, the sun-screening agent added with the surface modified pearl powder still keeps higher sun-screening performance.
As is evident from the comparison of example 1 and comparative example 2, the selection of the surface-modified pearl powder having a particle size of 1 to 10 μm is advantageous for improving the sun-screening performance of the sun-screening agent.
Test example 2
The sunscreens of examples 1-2 were tested for stability, including heat, cold, alternating and lightAnd (5) testing. Wherein, the heat-resistant test conditions are: constant temperature and light shielding at 45+/-1 ℃; the cold resistance test conditions are as follows: -20+/-1 ℃ and keeping the temperature away from light; the alternating test conditions were: constant temperature of-20 ℃ for 3.5 days, constant temperature of 45 ℃ for 3.5 days and light shielding; the illumination test conditions are as follows: illumination constant temperature and humidity test box (1.47 x 10) 6 Lux hr), and the test results are shown in table 6.
TABLE 6 stability test results for sunscreens of examples 1-2
Project Heat resistant Cold-resistant Alternating Illumination of
Example 1 No abnormality No abnormality No abnormality No abnormality
Example 2 No abnormality No abnormality No abnormality No abnormality
As can be seen from Table 6, the sunscreen agent of the examples of the present application has excellent stability, and the compatibility and stability of the surface-modified pearl powder in the sunscreen agent are good.
The foregoing is merely a specific embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (16)

1. A sunscreen composition, wherein the sunscreen composition comprises: 0.5-5wt% of surface modified pearl powder and 15-45wt% of physical sun-screening agent;
the contact angle of the surface modified pearl powder is 100-140 degrees;
the particle size of the surface modified pearl powder is 1-10 mu m;
the surface modified pearl powder is lauroyl lysine surface modified pearl powder or triethoxy octyl silane surface modified pearl powder;
the physical sunscreens are selected from oily dispersions of zinc oxide and/or oily dispersions of titanium dioxide.
2. The sunscreen composition according to claim 1, wherein the surface modified pearl powder is lauroyl lysine surface modified pearl powder, the lauroyl lysine surface modified pearl powder consisting of 95-99 wt% pearl powder and 1-5 wt% lauroyl lysine.
3. The sunscreen composition according to claim 2, wherein the lauroyl lysine surface-modified pearl powder has a particle size of 5 to 10 μm.
4. The sunscreen composition according to claim 2, wherein said lauroyl lysine surface modified pearl powder is prepared by the following process:
mixing an aqueous solution of pearl powder with the pH value of 11.5-12.5 and lauroyl lysine powder to obtain a first mixed solution, preserving heat of the first mixed solution at 70-90 ℃ for 20-40 min to obtain a second mixed solution, adjusting the pH value of the second mixed solution to 5.5-6.5, and continuously preserving heat at 70-90 ℃ under stirring for 20-40 min.
5. The sunscreen composition according to claim 4, wherein the mass percentage of the pearl powder in the aqueous solution of the pearl powder is 10-15 wt%.
6. The sunscreen composition according to claim 1, wherein the surface modified pearl powder is triethoxy octyl silane surface modified pearl powder, the triethoxy octyl silane surface modified pearl powder consisting of 97 to 99.6wt% pearl powder and 0.4 to 3wt% triethoxy octyl silane.
7. The composition of claim 6, wherein the particle size of the triethoxycyclosilane surface modified pearl powder is 1-5 μm.
8. The sunscreen composition according to claim 6, wherein said triethoxy octyl silane surface modified pearl powder is prepared by the following method:
spraying ethanol solution of triethoxy octyl silane on the surface of pearl powder under stirring, stirring and drying.
9. The sunscreen composition according to claim 8, wherein the mass percentage of triethoxy octyl silane in the ethanol solution of triethoxy octyl silane is 20-40 wt%.
10. The sunscreen composition of claim 1, wherein the physical sunscreen consists of an oily dispersion of zinc oxide and an oily dispersion of titanium dioxide.
11. The sunscreen composition according to claim 1, wherein the physical sunscreen agent consists of an oily dispersion of zinc oxide and an oily dispersion of titanium dioxide in a mass ratio of 1:2.
12. The composition of any one of claims 1 to 11, wherein the composition further comprises 2 to 7wt% emulsifier, 5 to 15wt% emollient, 0.2 to 2wt% film former, 5 to 15wt% humectant, 0.2 to 0.3wt% preservative, and the balance water.
13. The sunscreen composition according to claim 12, wherein the emulsifier comprises any one or more of lauryl PEG-9 polydimethylsiloxane ethyl polydimethylsiloxane, PEG-10 polydimethylsiloxane, polydimethylsiloxane PEG-10/15 crosslinked polymer, sorbitan olive oleate, cetyl PEG/PPG-10/1 polydimethylsiloxane, sorbitan sesquioleate, polyglycerol-3 diisostearate, polyglycerol-6 polyhydroxystearate, and polyglycerol-4 diisostearate;
the emollient comprises any one or more of cyclopentamethylsilicone, caprylic/capric triglyceride, dioctyl carbonate and coco alcohol-caprylate/caprate;
the film forming agent comprises any one or more of acrylic acid (ester)/polydimethylsiloxane copolymer and VP/eicosene copolymer;
the humectant comprises any one or more of glycerol, butanediol and 1, 3-propanediol;
the preservative comprises any one or more of phenoxyethanol, p-hydroxyacetophenone and methylparaben.
14. The sunscreen composition according to claim 12, further comprising 1 to 5wt% of a skin feel modifier, 0.2 to 5wt% of a thickener, 0.01 to 0.1wt% of a chelating agent, 0.5 to 2wt% of an emulsion stabilizer, and 0.1 to 2wt% of a skin protectant.
15. The sunscreen composition according to claim 14, wherein said skin feel modifier comprises silica and/or HDI/trimethylol hexyl lactone crosslinked polymer;
the thickener comprises any one or more of disteardimonium hectorite, dextrin palmitate, and dimethyl silyl silica;
the chelating agent comprises disodium EDTA;
the emulsion stabilizer comprises sodium chloride and/or magnesium sulfate;
the skin protectant comprises bisabolol and/or rhizoma Zingiberis recens extract.
16. A sunscreen comprising the sunscreen composition of any one of claims 1 to 15.
CN202111651582.6A 2021-12-30 2021-12-30 Sun-screening composition and sun-screening agent Active CN114053202B (en)

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CN115120512A (en) * 2022-06-30 2022-09-30 上海臻臣化妆品有限公司 Sun-proof slurry and preparation method thereof
CN116059132B (en) * 2023-02-10 2023-10-10 阳润科技(广东)有限公司 Physical sun-screening agent and preparation method thereof, slurry containing physical sun-screening agent and preparation method thereof

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