CN112168722A - Sunscreen essence emulsion capable of effectively resisting ultraviolet injury and preparation method thereof - Google Patents
Sunscreen essence emulsion capable of effectively resisting ultraviolet injury and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a sunscreen essence emulsion capable of effectively resisting ultraviolet injury and a preparation method thereof, wherein the sunscreen essence emulsion comprises the following steps: step one, preparing an oil phase: adding emulsifier 1, emulsifier 2, cetyl lactate, C12-C15 alkyl lactate, myristyl myristate, ultraviolet absorber 1, ultraviolet absorber 2, ultraviolet absorber 3 and propylene glycol into a reaction kettle A to obtain an oil phase; step two, preparation of a water phase: stirring the modified nano titanium dioxide, deionized water and xanthan gum to obtain a water phase; step three, grinding small materials: obtaining dispersed small materials; step four, mixing and emulsifying: filtering the oil phase and the water phase, pumping into a vacuum emulsifying machine, adding the dispersed small materials, heating to 70-85 deg.C, stirring at 50-100r/min for 10-20min, and adding antiseptic and essence to obtain sunscreen essence emulsion. And fifthly, aging and filling to obtain the sunscreen essence emulsion capable of effectively resisting ultraviolet damage.
Description
Technical Field
The invention relates to the technical field of cosmetics, and particularly relates to a sunscreen essence emulsion capable of effectively resisting ultraviolet injury and a preparation method thereof.
Background
As is well known, sunlight contains light with various wavelengths, wherein the wavelength range of ultraviolet light is 100-400nm, the ultraviolet light can be subdivided into short-wave ultraviolet light, medium-wave ultraviolet light and long-wave ultraviolet light according to the wavelength, the wavelengths of the ultraviolet light are 100-290nm, 290-320nm and 320-400nm respectively, the ultraviolet light with the highest radiation intensity reaching the ground surface through the atmospheric layer is long-wave ultraviolet light, the damage to the skin is large, the skin surface is irradiated by the ultraviolet light for a long time, the skin is dull and aged, spots and wrinkles are generated, and even more, skin cancer is generated, so the ultraviolet-resistant sunscreen cosmetics on the skin surface are very important.
At present, the main sunscreen cosmetics are sunscreen creams, have obvious sunscreen effect and are deeply favored by women loving beauty, however, many chemical components with strong skin irritation are added into many existing sunscreen creams, so that skin allergy is caused, and the health of consumers is seriously damaged.
CN201510064458.8 discloses an anti-ultraviolet radiation sunscreen cream, the active component of the sunscreen cream comprises (7-acetoxyl group-2- (acetoxymethyl) -1- ((4-acetoxyl group benzene) ethynyl) -9H-fluorene-9, 9-disubstituted) di (4, 1-phenylene) diacetate or a derivative thereof, the anti-oxidation capability of ultraviolet radiation skin can be improved, oxygen free radical removal is accelerated, skin tissue amino acid metabolism after ultraviolet radiation is regulated, the content of skin collagen is increased, and therefore the sunscreen cream plays a role in protecting the ultraviolet radiation skin and delaying skin photoaging.
CN201810886166.6 discloses a sunscreen cream and a preparation method thereof, wherein the sunscreen cream comprises the following raw materials in parts by weight: 10-15 parts of an alcohol extract of plukenetia volubilis linneo, 1-3 parts of chitosan, 3-5 parts of a plant extract, 2-4 parts of aloe juice, 8-12 parts of watermelon juice, 3-5 parts of soybean polypeptide, 2-4 parts of a dunaliella salina extract, 0.5-1 part of nano titanium dioxide, 3-5 parts of a humectant and 4-6 parts of a thickening agent. The sunscreen cream prepared by the invention has the characteristics of long duration of ultraviolet resistance effect, good ultraviolet damage repairing effect and the like.
CN201410385111.9 discloses a high-intensity anti-ultraviolet silk fibroin sunscreen cream, which is characterized in that the raw materials comprise the following components by weight: 10-15 parts of 12 wt% silk fibroin film, 6-8 parts of glycerol, 4-6 parts of phosphate, 1-1.5 parts of whitening agent, 1-1.2 parts of beeswax, 0.6-0.8 part of vitamin E, 0.4-0.6 part of sodium carboxymethylcellulose, 3-5 parts of natural extract, 0.5-0.8 part of glyceryl monostearate, 1-2 parts of citric acid and 20-25 parts of deionized water. The silk fibroin film can be absorbed by human tissues, has excellent ultraviolet resistance, can be recycled, is green and environment-friendly, and has no toxicity, stimulation or allergy to skin, and also has the effects of moisturizing, repairing, moistening and whitening.
The prior art also relates to ultraviolet-resistant sunscreen cosmetics, but the ultraviolet-resistant components of the cosmetics in the prior art are single, so that the ultraviolet-resistant effect is poor, and with the improvement of the requirements of consumers, the sunscreen cosmetics which have stronger ultraviolet-resistant capability and are nontoxic and harmless to the skin are developed, so that the sunscreen cosmetics have great economic value.
Disclosure of Invention
The invention provides a sunscreen essence emulsion capable of effectively resisting ultraviolet injury and a preparation method thereof.
The sun-screening essence emulsion capable of effectively resisting ultraviolet injury and the preparation method thereof are characterized by comprising the following steps:
step one, preparing an oil phase: adding 3-6 parts by mass of emulsifier 1, 3-6 parts by mass of emulsifier 2, 2-4 parts by mass of cetyl lactate, 1-3 parts by mass of C12-C15 alkyl lactate, 2-5 parts by mass of myristyl myristate, 6-8 parts by mass of ultraviolet absorber 1, 2-4 parts by mass of ultraviolet absorber 2, 2-4 parts by mass of ultraviolet absorber 3 and 6-8 parts by mass of propylene glycol into a reaction kettle A, stirring at 50-100r/min, heating to 75-85 ℃, and stirring for 30-60min to obtain an oil phase;
step two, preparation of a water phase: adding 5-10 parts of modified nano titanium dioxide and 50-80 parts of deionized water into a reaction kettle B according to the mass parts, heating to 70-85 ℃, stirring and dispersing for 10-30min at 200-300r/min, then slowly scattering 1-2 parts of xanthan gum while stirring, and stirring for 30-60min at 50-100r/min to obtain a water phase;
step three, grinding small materials: adding 3-5 parts of isocetyl stearyl stearate and 3-5 parts of a skin conditioner into a colloid mill according to the mass parts, and grinding to obtain small dispersed materials;
step four, mixing and emulsifying: filtering the oil phase and the water phase, pumping into a vacuum emulsifying machine, adding the dispersed small materials, heating to 70-85 ℃, stirring for 10-20min at 50-100r/min, then homogenizing and emulsifying for 3-10min at 3000r/min at 2000-.
Step five, aging and filling: aging the obtained sunscreen essence emulsion for 1-3 days, and filling by a filling machine to obtain the sunscreen essence emulsion capable of effectively resisting ultraviolet ray damage.
Preferably, the emulsifier 1 in the first step is one or a combination of several of sorbitan monolaurate, sorbitan monopalmitate, sorbitan monooleate and polyoxyethylene stearate.
Preferably, the emulsifier 2 in the first step is glyceryl stearate, sucrose polystearate, polyglycerol-6-dioleate, and polyglycerol-6-stearate.
Preferably, the ultraviolet light absorber 1 in the step one is one or a combination of p-methoxy propyl cinnamate, p-methoxy amyl cinnamate, p-methoxy cyclohexyl cinnamate and p-methoxy octyl cinnamate.
Preferably, the ultraviolet absorber 2 in the first step is one or a combination of 3-carboxycoumarin, 4-methyl-6-methoxycoumarin and amino acid methyl ester.
Preferably, the ultraviolet light absorber 3 in the first step is one or a combination of phenyl salicylate, diethylhexyl salicylate and octyl salicylate.
Preferably, the preparation method of the modified nano titanium dioxide in the step two comprises the following steps:
adding 10 parts of nano titanium dioxide and 0.5-1.0 part of KH570 into 50 parts of absolute ethanol according to the mass parts, stirring at 3000r/min of 2000-one, heating to 50-70 ℃, reacting for 4-6h, filtering, drying to obtain surface modified nano titanium dioxide, then uniformly mixing 10 parts of modified nano titanium dioxide, 3-5 parts of beta-carotene, 1-2 parts of trihydroxy styrene polyphenol, 0.03-0.06 part of potassium persulfate and 50 parts of deionized water, introducing nitrogen to remove air, stirring at 300r/min of 200-one, heating to 70-80 ℃, reacting for 1-3h, filtering, fully washing powder with deionized water, and drying to obtain the modified nano titanium dioxide.
Preferably, the skin conditioner in the third step is one or a combination of vitamin B3, galactomannan oligosaccharide, maleic acid soybean oil and ginger root oil.
Preferably, the preservative in the fourth step is one or a combination of more of astragaloside, guaiazulene, propolis, limonene, alizarin and usnic acid.
Preferably, the essence in the fourth step is one or a combination of orchid essence, rosemary essence, sandalwood essence and green tea essence.
Part of reaction mechanism in the modification process of the nano titanium dioxide is shown as follows:
compared with the prior art, the invention has the beneficial effects that:
1. by adding the compounded ultraviolet absorber harmless to the skin into the matrix, the ultraviolet light in the range of 100-400nm is absorbed, and the ultraviolet resistance effect of the sunscreen cream essence emulsion is greatly improved;
2. through adding modified nanometer titanium dioxide in the base member, improved the anti ultraviolet effect of titanium dioxide on the one hand, on the other hand, grafted a small amount of anti ultraviolet's natural organic matter on the titanium dioxide surface, made nanometer titanium dioxide have the effect of reflection ultraviolet ray concurrently, on the other hand also has the effect of absorption ultraviolet ray concurrently, and made nanometer titanium dioxide dispersion more even in the quintessence cream, the effect is better, exists more stably.
Drawings
FIG. 1 is a Fourier infrared spectrum of the modified nano titanium dioxide obtained in example 1:
at 450cm-1An absorption peak of titanium dioxide at 3388cm is present in the vicinity-1A stretching absorption peak of hydroxyl exists nearby, which indicates that the nano titanium dioxide participates in the reaction; at 1636cm-1An absorption peak of 2957/2839cm is near the carbon-carbon double bond-1The antisymmetric stretching/symmetric stretching absorption peak of the carbon-hydrogen bond exists nearby, which indicates that the beta-carotene participates in the reaction; at 1590/1377cm-1An absorption peak of a benzene ring exists nearby, which indicates that trihydroxy styrene polyphenol participates in the reaction; at 1070/806cm-1An antisymmetric stretching/symmetric stretching absorption peak of a silicon-oxygen bond exists nearby, and is 650cm-1The expansion absorption peak of silicon-carbon bond is present nearby and is 1717cm-1A telescopic absorption peak of ester carbonyl exists nearby, which indicates that KH570 participates in the reaction;
Detailed Description
The raw materials used in the following examples are all commercially available products, and the examples are further illustrative of the present invention and do not limit the scope of the present invention;
the performance test methods are as follows:
1. SPF value: testing was performed according to the U.S. FDA test standards for sun protection index;
2. PA value: the test was carried out according to "UVA prevention Effect measurement Standard" published by the Japan cosmetic industry Association.
Example 1
Step one, preparing an oil phase: adding 3g of sorbitan monolaurate, 3g of glyceryl stearate, 2g of cetyl lactate, 1g of C12-C15 alkyl lactate, 2g of myristyl myristate, 6g of p-methoxy propyl cinnamate, 2g of 3-carboxycoumarin, 2g of phenyl salicylate and 6g of propylene glycol into a reaction kettle A, stirring at 50r/min, heating to 75 ℃, and stirring for 30min to obtain an oil phase;
step two, preparation of a water phase: adding 5g of modified nano titanium dioxide and 50g of deionized water into a reaction kettle B, heating to 70 ℃, stirring and dispersing for 10min at 200r/min, then slowly scattering 1g of xanthan gum while stirring, and stirring for 30min at 50r/min to obtain a water phase;
step three, grinding small materials: adding 3g of isocetyl stearyl stearate and 3g of vitamin B3 into a colloid mill, and grinding to obtain small dispersed materials;
step four, mixing and emulsifying: filtering the oil phase and the water phase, pumping into a vacuum emulsifying machine, adding the dispersed small materials, heating to 70 ℃, stirring for 10min at 50r/min, homogenizing and emulsifying for 3min at 2000r/min, cooling to 30 ℃, adding 0.05g of astragaloside and 0.1g of orchid essence, and stirring for 30min at 50r/min to obtain the sunscreen essence emulsion.
Step five, aging and filling: and aging the obtained sunscreen essence emulsion for 1 day, and filling by using a filling machine to obtain the sunscreen essence emulsion capable of effectively resisting ultraviolet ray damage.
The preparation method of the modified nano titanium dioxide comprises the following steps:
adding 10g of nano titanium dioxide and 0.5gKH570 g of nano titanium dioxide into 50g of absolute ethyl alcohol, stirring at 2000r/min, heating to 50 ℃, reacting for 4h, filtering and drying to obtain surface-modified nano titanium dioxide, then uniformly mixing 10g of modified nano titanium dioxide, 3g of beta-carotene, 1g of trihydroxy styrene polyphenol, 0.03g of potassium persulfate and 50g of deionized water, introducing nitrogen to remove air, stirring at 200r/min, heating to 70 ℃, reacting for 1h, filtering, fully washing powder with deionized water, and drying to obtain the modified nano titanium dioxide.
The obtained sunscreen essence emulsion has SPF value of 52 and PA value of PA + + +.
Example 2
Step one, preparing an oil phase: adding 3.7g of sorbitan monopalmitate, 3.5g of sucrose polystearate, 2.2g of hexadecyl lactate, 1.5g of C12-C15 alkyl lactate, 2.4g of myristyl myristate, 6.4g of amyl p-methoxycinnamate, 2.2g of 4-methyl-6-methoxycoumarin, 2.4g of diethylhexyl salicylate and 6.4g of propylene glycol into a reaction kettle A, stirring at 64r/min, heating to 77.8 ℃, and stirring for 36.6min to obtain an oil phase;
step two, preparation of a water phase: adding 6.2g of modified nano titanium dioxide and 54.8g of deionized water into a reaction kettle B, heating to 73 ℃, stirring and dispersing for 12.4min at 218r/min, then slowly scattering 1.2g of xanthan gum while stirring, and stirring for 35.4min at 62r/min to obtain a water phase;
step three, grinding small materials: adding 3.4g of isocetyl stearyl stearate and 3.5g of galactomannan oligosaccharide into a colloid mill, and grinding to obtain small dispersed materials;
step four, mixing and emulsifying: filtering the oil phase and the water phase, pumping into a vacuum emulsifying machine, adding the dispersed small materials, heating to 73.3 ℃, stirring for 12min at 60r/min, then homogenizing and emulsifying for 4.1min at 2240r/min, cooling to 32.4 ℃, adding 0.06g of guaiazulene and 0.1g of rosemary essence, stirring for 37.2min at 55r/min, and obtaining the sunscreen essence emulsion.
Step five, aging and filling: and aging the obtained sunscreen essence emulsion for 1 day, and filling by using a filling machine to obtain the sunscreen essence emulsion capable of effectively resisting ultraviolet ray damage.
The preparation method of the modified nano titanium dioxide comprises the following steps:
adding 10g of nano titanium dioxide and 0.6gKH570 g of nano titanium dioxide into 50g of absolute ethyl alcohol, stirring at 2160r/min, heating to 52.8 ℃, reacting for 4.4h, filtering, drying to obtain surface-modified nano titanium dioxide, then uniformly mixing 10g of modified nano titanium dioxide, 3.3g of beta-carotene, 1.2g of trihydroxy styrene polyphenol, 0.03g of potassium persulfate and 50g of deionized water, introducing nitrogen to remove air, stirring at 216r/min, heating to 72.2 ℃, reacting for 1.5h, filtering, fully washing powder with deionized water, and drying to obtain the modified nano titanium dioxide.
The obtained sunscreen essence emulsion has SPF value of 52 and PA value of PA + + +.
Example 3
Step one, preparing an oil phase: adding 4.1g of sorbitan monooleate, 3.8g of polyglycerol-6-dioleate, 2.6g of hexadecyl lactate, 1.9g of C12-C15 alkyl lactate, 3g of myristyl myristate, 6.9g of cyclohexyl p-methoxycinnamate, 2.7g of amino acid methyl ester, 2.8g of octyl salicylate and 6.6g of propylene glycol into a reaction kettle A, stirring at 72r/min, heating to 80.2 ℃, and stirring for 42min to obtain an oil phase;
step two, preparation of a water phase: adding 6.8g of modified nano titanium dioxide and 59.6g of deionized water into a reaction kettle B, heating to 76.3 ℃, stirring and dispersing for 16min at 242r/min, then slowly scattering 1.3g of xanthan gum while stirring, and stirring for 40.2min at 72r/min to obtain a water phase;
step three, grinding small materials: adding 3.9g of isocetyl stearyl stearate and 3.7g of soybean oil maleate into a colloid mill, and grinding to obtain small dispersed materials;
step four, mixing and emulsifying: filtering the oil phase and the water phase, pumping into a vacuum emulsifying machine, adding the dispersed small materials, heating to 75.7 ℃, stirring for 14.2min at 74r/min, then homogenizing and emulsifying for 5.5min at 2360r/min, cooling to 34.6 ℃, adding 0.05g of propolis and 0.2g of sandalwood essence, stirring for 45.6min at 61r/min, and obtaining the sunscreen essence emulsion.
Step five, aging and filling: and aging the obtained sunscreen essence emulsion for 1 day, and filling by using a filling machine to obtain the sunscreen essence emulsion capable of effectively resisting ultraviolet ray damage.
The preparation method of the modified nano titanium dioxide comprises the following steps:
adding 10g of nano titanium dioxide and 0.7gKH570 g of nano titanium dioxide into 50g of absolute ethyl alcohol, stirring at 2300r/min, heating to 58 ℃, reacting for 4.9h, filtering, and drying to obtain surface-modified nano titanium dioxide, then uniformly mixing 10g of modified nano titanium dioxide, 3.8g of beta-carotene, 1.3g of trihydroxy styrene polyphenol, 0.04g of potassium persulfate and 50g of deionized water, introducing nitrogen to remove air, stirring at 228r/min, heating to 73.4 ℃, reacting for 1.9h, filtering, fully washing powder with deionized water, and drying to obtain the modified nano titanium dioxide.
The obtained sunscreen essence emulsion has SPF value of 53 and PA value of PA + + +.
Example 4
Step one, preparing an oil phase: adding 4.8g of polyoxyethylene stearate, 4.5g of polyglycerol-6-stearate, 3g of hexadecyl lactate, 2.4g of C12-C15 alkyl lactate, 3.7g of myristyl myristate, 7.3g of octyl p-methoxycinnamate, 2.9g of 3-carboxycoumarin, 3g of phenyl salicylate and 6.9g of propylene glycol into a reaction kettle A, stirring at 77r/min, heating to 81.8 ℃, and stirring for 46.8min to obtain an oil phase;
step two, preparation of a water phase: adding 7.9g of modified nano titanium dioxide and 62.6g of deionized water into a reaction kettle B, heating to 79.6 ℃, stirring and dispersing for 18.4min at 262r/min, then slowly scattering 1.4g of xanthan gum while stirring, and stirring for 44.4min at 81r/min to obtain a water phase;
step three, grinding small materials: adding 4.4g of stearyl stearic isocetyl ester and 4g of ginger root oil into a colloid mill, and grinding to obtain small dispersed materials;
step four, mixing and emulsifying: filtering the oil phase and the water phase, pumping into a vacuum emulsifying machine, adding the dispersed small materials, heating to 79.3 ℃, stirring for 16.6min at 87r/min, homogenizing and emulsifying for 7.4min at 2580r/min, cooling to 36.4 ℃, adding 0.07g of limonene and 0.3g of green tea essence, stirring for 51.6min at 71r/min to obtain the sunscreen essence emulsion.
Step five, aging and filling: and aging the obtained sunscreen essence emulsion for 2 days, and filling by using a filling machine to obtain the sunscreen essence emulsion capable of effectively resisting ultraviolet ray damage.
The preparation method of the modified nano titanium dioxide comprises the following steps:
adding 10g of nano titanium dioxide and 0.8gKH570 g of nano titanium dioxide into 50g of absolute ethyl alcohol, stirring at 2400r/min, heating to 61.2 ℃, reacting for 5.3h, filtering, drying to obtain surface-modified nano titanium dioxide, then uniformly mixing 10g of modified nano titanium dioxide, 4.2g of beta-carotene, 1.5g of trihydroxystyrene polyphenol, 0.04g of potassium persulfate and 50g of deionized water, introducing nitrogen to remove air, stirring at 246r/min, heating to 74.8 ℃, reacting for 2.1h, filtering, fully washing powder with deionized water, and drying to obtain the modified nano titanium dioxide.
The obtained sunscreen essence emulsion has SPF value of 54 and PA value of PA + + +.
Example 5
Step one, preparing an oil phase: adding 5.5g of sorbitan monolaurate, 4.9g of sucrose polystearate, 3.2g of hexadecyl lactate, 2.6g of C12-C15 alkyl lactate, 4.3g of myristyl myristate, 7.6g of cyclohexyl p-methoxycinnamate, 3.4g of 4-methyl-6-methoxycoumarin, 3.2g of diethylhexyl salicylate and 7.2g of propylene glycol into a reaction kettle A, stirring at 91r/min, heating to 83.2 ℃, and stirring for 52.8min to obtain an oil phase;
step two, preparation of a water phase: adding 9.1g of modified nano titanium dioxide and 69.8g of deionized water into a reaction kettle B, heating to 81.4 ℃, stirring and dispersing for 22.8min at 288r/min, then slowly scattering 1.6g of xanthan gum while stirring, and stirring for 49.2min at 93r/min to obtain a water phase;
step three, grinding small materials: adding 4.8g of stearyl isocetyl stearate and 4.4g of vitamin B3 into a colloid mill, and grinding to obtain small dispersed materials;
step four, mixing and emulsifying: filtering the oil phase and the water phase, pumping into a vacuum emulsifying machine, adding the dispersed small materials, heating to 80.8 ℃, stirring at 95r/min for 19.2min, then homogenizing and emulsifying at 2680r/min for 8.5min, cooling to 37.8 ℃, adding 0.08g of alizarin and 0.3g of rosemary essence, stirring at 84r/min for 58.8min to obtain the sunscreen essence emulsion.
Step five, aging and filling: and aging the obtained sunscreen essence emulsion for 2 days, and filling by using a filling machine to obtain the sunscreen essence emulsion capable of effectively resisting ultraviolet ray damage.
The preparation method of the modified nano titanium dioxide comprises the following steps:
adding 10g of nano titanium dioxide and 0.9gKH570 g of nano titanium dioxide into 50g of absolute ethyl alcohol, stirring at 2580r/min, heating to 63.6 ℃, reacting for 5.6h, filtering and drying to obtain surface-modified nano titanium dioxide, then uniformly mixing 10g of modified nano titanium dioxide, 4.6g of beta-carotene, 1.6g of trihydroxy styrene polyphenol, 0.05g of potassium persulfate and 50g of deionized water, introducing nitrogen to remove air, stirring at 258r/min, heating to 77 ℃, reacting for 2.6h, filtering, fully washing powder with deionized water, and drying to obtain the modified nano titanium dioxide.
The obtained sunscreen essence emulsion has SPF value of 54 and PA value of PA + + +.
Example 6
Step one, preparing an oil phase: adding 6g of sorbitan monopalmitate, 6g of polyglycerol-6-dioleate, 4g of hexadecyl lactate, 3g of C12-C15 alkyl lactate, 5g of myristyl myristate, 8g of octyl p-methoxycinnamate, 4g of amino acid methyl ester, 4g of octyl salicylate and 8g of propylene glycol into a reaction kettle A, stirring at 100r/min, heating to 85 ℃, and stirring for 60min to obtain an oil phase;
step two, preparation of a water phase: adding 10g of modified nano titanium dioxide and 80g of deionized water into a reaction kettle B, heating to 85 ℃, stirring and dispersing for 30min at 300r/min, then slowly scattering 2g of xanthan gum while stirring, and stirring for 60min at 100r/min to obtain a water phase;
step three, grinding small materials: adding 5g of isocetyl stearyl stearate and 5g of galactomannan oligosaccharide into a colloid mill, and grinding to obtain a small dispersed material;
step four, mixing and emulsifying: filtering the oil phase and the water phase, pumping into a vacuum emulsifying machine, adding the dispersed small materials, heating to 85 ℃, stirring for 20min at 100r/min, homogenizing and emulsifying for 10min at 3000r/min, cooling to 40 ℃, adding 0.07g of usnic acid and 0.4g of sandalwood essence, and stirring for 60min at 100r/min to obtain the sunscreen essence emulsion.
Step five, aging and filling: and aging the obtained sunscreen essence emulsion for 3 days, and filling by using a filling machine to obtain the sunscreen essence emulsion capable of effectively resisting ultraviolet ray damage.
The preparation method of the modified nano titanium dioxide comprises the following steps:
adding 10g of nano titanium dioxide and 1gKH570 g of nano titanium dioxide into 50g of absolute ethyl alcohol, stirring at 3000r/min, heating to 70 ℃, reacting for 6 hours, filtering and drying to obtain surface-modified nano titanium dioxide, then uniformly mixing 10g of modified nano titanium dioxide, 5g of beta-carotene, 2g of trihydroxy styrene polyphenol, 0.06g of potassium persulfate and 50g of deionized water, introducing nitrogen to remove air, stirring at 300r/min, heating to 80 ℃, reacting for 3 hours, filtering, fully washing powder with deionized water, and drying to obtain the modified nano titanium dioxide.
The obtained sunscreen essence emulsion has SPF value of 55 and PA value of PA + + +.
Comparative example 1
With respect to example 1, propyl p-methoxycinnamate was added in an amount of 1g in the first step, and the remainder was unchanged, so that the obtained sunscreen essence effective against ultraviolet ray damage had an SPF value of 48 and a PA value of PA + +.
Comparative example 2
Relative to example 1, the amounts of 3-carboxycoumarin and phenyl salicylate added in the first step are all 0g, and the rest are not changed, so that the SPF value of the obtained sunscreen essence emulsion capable of effectively resisting ultraviolet damage is 47, and the PA value is PA + +.
Comparative example 3
Compared with the example 1, the nano titanium dioxide added in the step two is not subjected to surface modification, and the rest is not changed, so that the SPF value of the obtained sun-screening essence milk capable of effectively resisting ultraviolet damage is 45, and the PA value is PA + +.
Claims (10)
1. The sun-screening essence emulsion capable of effectively resisting ultraviolet injury and the preparation method thereof are characterized by comprising the following steps:
step one, preparing an oil phase: adding 3-6 parts by mass of emulsifier 1, 3-6 parts by mass of emulsifier 2, 2-4 parts by mass of cetyl lactate, 1-3 parts by mass of C12-C15 alkyl lactate, 2-5 parts by mass of myristyl myristate, 6-8 parts by mass of ultraviolet absorber 1, 2-4 parts by mass of ultraviolet absorber 2, 2-4 parts by mass of ultraviolet absorber 3 and 6-8 parts by mass of propylene glycol into a reaction kettle A, stirring at 50-100r/min, heating to 75-85 ℃, and stirring for 30-60min to obtain an oil phase;
step two, preparation of a water phase: adding 5-10 parts of modified nano titanium dioxide and 50-80 parts of deionized water into a reaction kettle B according to the mass parts, heating to 70-85 ℃, stirring and dispersing for 10-30min at 200-300r/min, then slowly scattering 1-2 parts of xanthan gum while stirring, and stirring for 30-60min at 50-100r/min to obtain a water phase;
step three, grinding small materials: adding 3-5 parts of isocetyl stearyl stearate and 3-5 parts of a skin conditioner into a colloid mill according to the mass parts, and grinding to obtain small dispersed materials;
step four, mixing and emulsifying: filtering the oil phase and the water phase, pumping into a vacuum emulsifying machine, adding the dispersed small materials, heating to 70-85 ℃, stirring for 10-20min at 50-100r/min, then homogenizing and emulsifying for 3-10min at 3000r/min at 2000-.
Step five, aging and filling: aging the obtained sunscreen essence emulsion for 1-3 days, and filling by a filling machine to obtain the sunscreen essence emulsion capable of effectively resisting ultraviolet ray damage.
2. The method according to claim 1, wherein the emulsifier 1 in the first step is one or more of sorbitan monolaurate, sorbitan monopalmitate, sorbitan monooleate and polyoxyethylene stearate.
3. The method according to claim 1, wherein the emulsifier 2 of step one is glyceryl stearate, sucrose polystearate, polyglyceryl-6-dioleate, polyglyceryl-6-stearate.
4. The method of claim 1, wherein the ultraviolet light absorber 1 in the first step is one or more of propyl p-methoxycinnamate, amyl p-methoxycinnamate, cyclohexyl p-methoxycinnamate, and octyl p-methoxycinnamate.
5. The method as claimed in claim 1, wherein the ultraviolet absorber 2 in the first step is one or more of 3-carboxycoumarin, 4-methyl-6-methoxycoumarin, and amino acid methyl ester.
6. The method as claimed in claim 1, wherein the ultraviolet light absorber 3 in the first step is one or more of phenyl salicylate, diethylhexyl salicylate and octyl salicylate.
7. The method according to claim 1, wherein the preparation method of the modified nano titanium dioxide in the second step comprises the following steps:
adding 10 parts of nano titanium dioxide and 0.5-1.0 part of KH570 into 50 parts of absolute ethanol according to the mass parts, stirring at 3000r/min of 2000-one, heating to 50-70 ℃, reacting for 4-6h, filtering, drying to obtain surface modified nano titanium dioxide, then uniformly mixing 10 parts of modified nano titanium dioxide, 3-5 parts of beta-carotene, 1-2 parts of trihydroxy styrene polyphenol, 0.03-0.06 part of potassium persulfate and 50 parts of deionized water, introducing nitrogen to remove air, stirring at 300r/min of 200-one, heating to 70-80 ℃, reacting for 1-3h, filtering, fully washing powder with deionized water, and drying to obtain the modified nano titanium dioxide.
8. The method of claim 1, wherein in step three the skin conditioning agent is a combination of one or more of vitamin B3, galactomannan-oligosaccharides, maleic acid soybean oil, and ginger root oil.
9. The method as claimed in claim 1, wherein the preservative in step four is one or more of astragaloside, guaiazulene, propolis, limonene, alizarin and usnic acid.
10. The method according to claim 1, wherein the essence in the fourth step is one or more of orchid essence, rosemary essence, sandalwood essence and green tea essence.
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