Sunscreen composition and preparation method thereof

Abstract

The invention discloses a sunscreen composition and a preparation method thereof.The sunscreen composition comprises a sunscreen agent and an emollient, the inventor adjusts and optimizes the formula of the sunscreen composition, uses polysiloxane-15 as the sunscreen agent, and uses polydimethylsiloxane or a combination of polydimethylsiloxane and C9-12 alkane as the emollient, by controlling the mass ratio of the polysiloxane-15 to the polydimethylsiloxane to be (0.6-9.5): 1, the polysiloxane-15 and the polydimethylsiloxane can play a synergistic effect, so that the sunscreen composition can be prevented from being used with a cyclic organosilicon compound, and the sunscreen composition still has good properties of being transparent in appearance and refreshing and non-sticky in skin feeling.

Description

Technical Field

[0001] This application belongs to the technical field of sunscreen, and particularly relates to a sunscreen composition and a preparation method thereof. Background Art

[0002] The main function of sunscreen cosmetics is to protect the skin from the damage of ultraviolet rays, prevent problems such as skin sunburn, aging, and the appearance of age spots, and reduce the damage of ultraviolet rays to the skin by absorbing, reflecting or scattering ultraviolet rays. In the newly revised "Registration, Evaluation, Authorization and Restriction of Chemicals" (REACH), the chemicals involved include octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5), and dodecamethylcyclohexasiloxane (D6), and it is stipulated that the maximum usage concentration of D5 and D6 in cosmetics shall not exceed 0.1%.

[0003] In the above-mentioned traditional sunscreen cosmetics, cyclic organosilicon is basically used as an emollient, so its use is restricted. How to maintain good product performance of sunscreen cosmetics while avoiding the use of cyclic organosilicon components in sunscreen cosmetics is an urgent problem to be solved currently. Summary of the Invention

[0004] The embodiments of this application provide a sunscreen composition and a preparation method thereof, which can maintain good product performance of sunscreen cosmetics while avoiding the use of cyclic organosilicon components in sunscreen cosmetics.

[0005] In the first aspect, this application provides a sunscreen composition, which includes a sunscreen agent and an emollient; the sunscreen agent includes polysiloxane-15, and the emollient is polydimethylsiloxane or a combination of polydimethylsiloxane and C 9-12 alkanes; the mass ratio of polysiloxane-15 to polydimethylsiloxane is (0.6 - 9.5):1.

[0006] In any embodiment of this application, the sunscreen composition includes 11.8 - 29.5 parts of the sunscreen agent and 3 - 15 parts of the emollient.

[0007] In any embodiment of this application, the sunscreen agent includes 3 - 9.5 parts of polysiloxane-15.

[0008] In any embodiment of this application, the emollient is 3 - 5 parts of polydimethylsiloxane or a combination of 1 - 5 parts of polydimethylsiloxane and 2 - 10 parts of C 9-12 alkanes.

[0009] In any embodiment of the present application, the sunscreen also includes 1.5 - 4.5 parts of ethylhexyl salicylate, 6 - 8 parts of phenylbenzimidazole sulfonic acid, 1 - 5 parts of disodium phenyl dibenzimidazole tetrasulfonate, and 0.3 - 2.5 parts of terephthalylidene dicamphor sulfonic acid.

[0010] In any embodiment of the present application, the sunscreen composition further includes at least one of an emulsifier, a film-forming agent, a humectant, a solvent, a neutralizing agent, a preservative, a cooling agent, a skin conditioner, an anti-allergy agent, a pH buffer, and a fragrance.

[0011] In any embodiment of the present application, by mass, the sunscreen composition includes the following components: 11.8 - 29.5 parts of a sunscreen, 0.8 - 5 parts of an emulsifier, 2 - 10 parts of a film-forming agent, 10 - 40 parts of a humectant, 3 - 15 parts of an emollient, 20 - 100 parts of a solvent, 0.3 - 2.0 parts of a neutralizing agent, and 0.1 - 1 part of a preservative.

[0012] In any embodiment of the present application, by mass, the sunscreen composition includes the following components: 11.8 - 29.5 parts of a sunscreen, 0.8 - 5 parts of an emulsifier, 2 - 10 parts of a film-forming agent, 10 - 40 parts of a humectant, 3 - 15 parts of an emollient, 20 - 100 parts of a solvent, 0.3 - 2.0 parts of a neutralizing agent, 0.1 - 1 part of a preservative, 0.04 - 0.06 parts of a cooling agent, 0.8 - 1.2 parts of a skin conditioner, 0.4 - 0.6 parts of an anti-allergy agent, and 0.02 - 0.04 parts of a pH buffer.

[0013] In any embodiment of the present application, the emulsifier includes at least one of polydimethylsiloxane PEG-10 / 15 cross-linked polymer and PEG-10 polydimethylsiloxane; and / or, the film-forming agent includes silicone elastomer; and / or, the humectant includes at least one of glycerol and butanediol; and / or, the solvent includes deionized water; and / or, the neutralizing agent includes at least one of aminomethyl propanol and sodium hydroxide; and / or, the preservative includes at least one of chlorphenesin, phenoxyethanol, and ethylhexylglycerin; and / or, the cooling agent includes menthol; and / or, the skin conditioner includes Melissa officinalis extract; and / or, the anti-allergy agent includes Malus domestica fruit oil; and / or, the pH buffer includes sodium citrate; and / or, the fragrance includes mint essence.

[0014] In a second aspect, the present application provides a method for preparing the sunscreen composition as described in the first aspect, including the following steps: providing raw materials for the sunscreen composition, and mixing the raw materials to obtain the sunscreen composition.

[0015] Compared with the prior art, the embodiments of the present application have at least the following beneficial effects:

[0016] The sunscreen composition of the present application comprises a sunscreen agent and an emollient. The inventors of the present application adjusted and optimized the formulation of the sunscreen composition. By using polysiloxane-15 as the sunscreen agent and polydimethylsiloxane or a combination of polydimethylsiloxane and C 9-12 alkanes as the emollient. Among them, polysiloxane-15 can reduce the greasy and heavy feeling of the sunscreen composition and play a role in providing a light and thin skin feel; polydimethylsiloxane can not only form a protective film on the skin surface, reduce water loss, keep the skin moisturized, but also has good lubricity, making the product feel smoother when used. At the same time, by controlling the mass ratio of polysiloxane-15 to polydimethylsiloxane to be (0.6 - 9.5):1, polysiloxane-15 and polydimethylsiloxane can exert a synergistic effect. While avoiding the use of cyclic organosilicon compounds in the sunscreen composition, the sunscreen composition still maintains good properties such as a transparent appearance, a fresh and non-greasy skin feel. Detailed Embodiments

[0017] In order to make the application purpose, technical solution and beneficial technical effects of the present application clearer, the present application will be further described in detail below with reference to embodiments. It should be understood that the embodiments described in this specification are only for explaining the present application and not for limiting the present application.

[0018] For simplicity, the present application only explicitly discloses some numerical ranges. However, any lower limit can be combined with any upper limit to form a range not explicitly recorded; and any lower limit can be combined with other lower limits to form a range not explicitly recorded. Similarly, any upper limit can be combined with any other upper limit to form a range not explicitly recorded. In addition, although not explicitly recorded, each point or single value between the range endpoints is included in this range. Thus, each point or single value can be used as its own lower limit or upper limit and combined with any other point or single value or combined with other lower limits or upper limits to form a range not explicitly recorded.

[0019] It should be noted that the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article or device. Without further limitation, the elements defined by the statement "comprising..." do not preclude the presence of additional identical elements in the process, method, article or device comprising the said elements.

[0020] The above application content of this application does not intend to describe every disclosed embodiment or every implementation in this application. The following description more specifically illustrates exemplary embodiments. Throughout the application, guidance is provided through a series of embodiments, and these embodiments can be used in various combinations. In each instance, the enumeration is only a representative group and should not be construed as exhaustive.

[0021] The term "decamethylcyclopentasiloxane" is also known as cyclopentadimethylsiloxane and is abbreviated as D5.

[0022] The term "C 9-12 alkane" refers to a saturated straight-chain or branched-chain alkane with 9-12 carbon atoms, such as C9 saturated straight-chain alkane, C 10 saturated straight-chain alkane, C 11 saturated straight-chain alkane, C 12 saturated straight-chain alkane, C9 saturated branched-chain alkane, C 10 saturated branched-chain alkane, C 11 saturated branched-chain alkane, C 12 saturated branched-chain alkane.

[0023] The term "cst" is the abbreviation of Centistokes, indicating centistokes, which is the unit of kinematic viscosity. In actual measurement, it is commonly represented by centistokes cst, and its unit is square millimeters per second (mm 2 / s), that is, 1 cst = 1 mm 2 / s.

[0024] D4, D5, and D6 are classified as "persistent, bioaccumulative, and toxic substances", which are difficult to degrade in the environment, easily accumulate in organisms, and have adverse effects on health. Traditional sunscreen products generally use D5 as an emollient ingredient. However, due to its environmental risks and potential ecological toxicity, the European Parliament has revised the "Registration, Evaluation, Authorization, and Restriction of Chemicals" (REACH) regulation, clearly restricting the use of cyclic organosilicon compounds, especially D5 in cosmetics.

[0025] In view of the above problems, the embodiments of this application provide a sunscreen composition and its preparation method, which can avoid using cyclic organosilicon components in sunscreen cosmetics while still maintaining good product performance of sunscreen cosmetics.

[0026] The first aspect of the implementation manner of this application provides a sunscreen composition, including a sunscreen agent and an emollient; the sunscreen agent includes polysiloxane-15, and the emollient is polydimethylsiloxane or a combination of polydimethylsiloxane and C 9-12 alkane; the mass ratio of polysiloxane-15 to polydimethylsiloxane is (0.6-9.5):1.

[0027] As an example, when the emollient is polydimethylsiloxane, the mass ratio of polysiloxane-15 to polydimethylsiloxane can be (0.6-3):1, (0.7-2.5):1, (0.75-2):1, (0.6-0.8):1, (0.8-1.2):1, (1.1-1.3):1 or (1.8-2.2):1.

[0028] Optionally, when the emollient is polydimethylsiloxane, the mass ratio of polysiloxane-15 to polydimethylsiloxane is 0.75:1.

[0029] Optionally, when the emollient is polydimethylsiloxane, the mass ratio of polysiloxane-15 to polydimethylsiloxane is 1:1.

[0030] Optionally, when the emollient is polydimethylsiloxane, the mass ratio of polysiloxane-15 to polydimethylsiloxane is 1.25:1.

[0031] Optionally, when the emollient is polydimethylsiloxane, the mass ratio of polysiloxane-15 to polydimethylsiloxane is 2:1.

[0032] As an example, when the emollient is a combination of polydimethylsiloxane and C 9-12 alkane, the mass ratio of polysiloxane-15 to polydimethylsiloxane can be (0.8-5):1, (0.9-4.5):1, (1-4):1, (0.8-1.2):1, (1.2-1.8):1, (2.2-2.7):1, (2.8-3.2):1 or (3.8-4.2):1.

[0033] Optionally, when the emollient is a combination of polydimethylsiloxane and C 9-12 alkane, the mass ratio of polysiloxane-15 to polydimethylsiloxane is 1:1.

[0034] Optionally, when the emollient is a combination of polydimethylsiloxane and C 9-12 alkane, the mass ratio of polysiloxane-15 to polydimethylsiloxane is 1.5:1.

[0035] Optionally, when the emollient is a combination of polydimethylsiloxane and C 9-12 alkane, the mass ratio of polysiloxane-15 to polydimethylsiloxane is 2.5:1.

[0036] Optionally, when the emollient is a combination of polydimethylsiloxane and C 9-12 alkane, the mass ratio of polysiloxane-15 to polydimethylsiloxane is 3:1.

[0037] Optionally, when the emollient is a combination of polydimethylsiloxane and C 9-12When combining alkanes, the mass ratio of polysiloxane-15 to polydimethylsiloxane is 4:1.

[0038] Using polysiloxane-15 as a sunscreen agent, and polydimethylsiloxane or a combination of polydimethylsiloxane and C 9-12 alkanes as an emollient, polysiloxane-15 has a relatively low refractive index (1.440) in liquid chemical sunscreen agents. Combining it with polydimethylsiloxane with a low refractive index and C 9-12 alkanes in a certain proportion can make the refractive indices of the water and oil phases similar, thus obtaining a product with higher transparency; especially when the mass ratio of polysiloxane-15 to polydimethylsiloxane is controlled to be (0.6 - 9.5):1, especially 1.25:1 or 2.5:1, polysiloxane-15 and polydimethylsiloxane or a combination of polysiloxane-15 with polydimethylsiloxane and C 9-12 alkanes can exert a synergistic effect. While avoiding the use of cyclic organosilicon compounds in the sunscreen composition, it can ensure that the sunscreen composition already has high stability, transparency, freshness, water-resistant film-forming ability, and low greasiness.

[0039] In some embodiments, the sunscreen composition comprises 11.8 - 29.5 parts of a sunscreen agent and 3 - 15 parts of an emollient.

[0040] As an example, the sunscreen composition comprises 11.8, 12.0, 12.5, 13.0, 13.5, 13.8, 14.0, 14.5, 14.8, 15.0, 15.2, 15.5, 16.0, 16.5, 16.7, 16.8, 17.0, 17.2, 17.5, 17.7, 17.8, 18.0, 18.2, 18.5, 18.7, 18.8, 19.0, 19.2, 19.5, 19.8, 20.0, 20.2, 20.5, 20.8, 21.0, 21.2, 21.5, 21.7, 21.8, 22.0, 22.2, 22.4, 22.5, 22.7, 22.8, 23.0, 24.0, 25.0, 26.0, 27.0, 28.0, 29.0 or 29.5 parts of a sunscreen agent.

[0041] Optionally, the sunscreen composition comprises 14 - 23 parts of a sunscreen agent.

[0042] Optionally, the sunscreen composition comprises 15 - 22 parts of a sunscreen agent.

[0043] As an example, the sunscreen composition comprises 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10.0, 10.5, 11.0, 11.5, 12.0, 12.5, 13.0, 13.5, 14.0, 14.5 or 15.0 parts of an emollient.

[0044] Optionally, the sunscreen composition comprises 3 to 12 parts of an emollient.

[0045] Optionally, the sunscreen composition comprises 3 to 11 parts of an emollient.

[0046] In some embodiments, the sunscreen agent comprises 3 to 9.5 parts of Polysilicone-15.

[0047] As an example, the sunscreen agent comprises 3, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0 or 9.5 parts of Polysilicone-15.

[0048] Optionally, the sunscreen agent comprises 3 to 8.5 parts of Polysilicone-15.

[0049] Polysilicone-15, as an organosilicon sunscreen agent, has a low refractive index, which can greatly reduce the refractive index of the oil-phase sunscreen agent. At the same time, it makes the refractive index of the oil-phase sunscreen agent close to that of the water phase, enabling the light-shielding rates of the oil phase and the water phase to tend to be equal, thereby preparing a sunscreen composition with a transparent texture. The prepared sunscreen composition has a transparent body, strong light stability, a high sun protection index, and a refreshing and non-greasy skin feel.

[0050] In some embodiments, the emollient is 3 to 5 parts of polydimethylsiloxane or a combination of 1 to 5 parts of polydimethylsiloxane and 2 to 10 parts of C 9-12 alkanes.

[0051] As an example, the emollient is 3, 3.5, 4.0, 4.5 or 5.0 parts of polydimethylsiloxane.

[0052] Optionally, the emollient is 3.5 to 5.5 parts of polydimethylsiloxane.

[0053] As an example, the emollient is a combination of 2 parts of polydimethylsiloxane and 5 parts of C 9-12 alkanes.

[0054] As an example, the emollient is a combination of 1 part of polydimethylsiloxane and 2 parts of C 9-12 alkanes.

[0055] As an example, the emollient is a combination of 2 parts of polydimethylsiloxane and 7 parts of C 9-12Combination of alkanes.

[0056] As an example, the emollient is 5 parts of polydimethylsiloxane and 5 parts of C 9-12 Combination of alkanes.

[0057] Optionally, the emollient is 1 - 5 parts of polydimethylsiloxane and 2 - 8 parts of C 9-12 Combination of alkanes.

[0058] Optionally, the viscosity of the polydimethylsiloxane is 1.4 - 1.6 cst.

[0059] As an example, the viscosity of the polydimethylsiloxane is 1.6 cst.

[0060] In some embodiments, the sunscreen also includes 1.5 - 4.5 parts of ethylhexyl salicylate, 6 - 8 parts of phenylbenzimidazole sulfonic acid, 1 - 5 parts of disodium phenyl dibenzimidazole tetrasulfonate, and 0.3 - 2.5 parts of terephthalylidene dicamphor sulfonic acid.

[0061] As an example, the sunscreen includes 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, or 4.5 parts of ethylhexyl salicylate.

[0062] Optionally, the sunscreen includes 2 - 4 parts of ethylhexyl salicylate.

[0063] As an example, the sunscreen includes 6, 6.5, 7.0, 7.5, or 8.0 parts of phenylbenzimidazole sulfonic acid.

[0064] Optionally, the sunscreen includes 7 - 8 parts of phenylbenzimidazole sulfonic acid.

[0065] As an example, the sunscreen includes 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, or 5.0 parts of disodium phenyl dibenzimidazole tetrasulfonate.

[0066] Optionally, the sunscreen includes 1 - 2 parts of disodium phenyl dibenzimidazole tetrasulfonate.

[0067] As an example, the sunscreen includes 0.3, 0.5, 1.0, 1.5, 1.8, 2.0, 2.2, 2.4, or 2.5 parts of terephthalylidene dicamphor sulfonic acid.

[0068] Optionally, the sunscreen includes 1.5 - 3.0 parts of terephthalylidene dicamphor sulfonic acid.

[0069] Ethylhexyl salicylate, phenylbenzimidazole sulfonic acid, disodium phenyl dibenzimidazole tetrasulfonate, and terephthalylidene dicamphor sulfonic acid are used by quantitatively compounding with polysiloxane-15. Among them, polysiloxane-15 and ethylhexyl salicylate are oil-phase sunscreens, which are located in the oil phase of the emulsion after emulsification, while phenylbenzimidazole sulfonic acid, disodium phenyl dibenzimidazole tetrasulfonate, and terephthalylidene dicamphor sulfonic acid belong to water-phase sunscreens and enter the water phase of the emulsion after emulsification, which can increase the refractive index of the water phase. Therefore, adding water-phase sunscreens such as phenylbenzimidazole sulfonic acid, disodium phenyl dibenzimidazole tetrasulfonate, and terephthalylidene dicamphor sulfonic acid is beneficial to increasing the refractive index of the water phase. Polysiloxane-15 and ethylhexyl salicylate both have a low refractive index and a high sun protection index. They can not only increase the sun protection index but also reduce the refractive index of the entire oil-phase system, so that the refractive indices of the oil and water phases are equal and the entire system becomes a transparent sunscreen. Strictly limiting the dosages of the main components of the oil-phase sunscreen and the main components of the water-phase sunscreen can achieve the best compounding effect, greatly improve the SPF value, not only bring a high sun protection effect but also provide a dry and smooth skin feel. In addition, water-phase sunscreens such as phenylbenzimidazole sulfonic acid, terephthalylidene dicamphor sulfonic acid, and disodium phenyl dibenzimidazole tetrasulfonate can better form a sunscreen film layer on the surface of the skin, form a complete sunscreen film layer on the skin surface, which is beneficial to improving the protection against ultraviolet rays and can increase the SPF value.

[0070] In some embodiments, the sunscreen composition further comprises at least one of an emulsifier, a film-forming agent, a humectant, a solvent, a neutralizing agent, a preservative, a cooling agent, a skin conditioner, an anti-allergy agent, a pH buffer, and a fragrance.

[0071] In some embodiments, by mass, the sunscreen composition comprises the following components: 11.8 - 29.5 parts of a sunscreen, 0.8 - 5 parts of an emulsifier, 2 - 10 parts of a film-forming agent, 10 - 40 parts of a humectant, 3 - 15 parts of an emollient, 20 - 100 parts of a solvent, 0.3 - 2.0 parts of a neutralizing agent, and 0.1 - 1 part of a preservative.

[0072] In some embodiments, by mass, the sunscreen composition comprises the following components: 11.8 - 29.5 parts of a sunscreen, 0.8 - 5 parts of an emulsifier, 2 - 10 parts of a film-forming agent, 10 - 40 parts of a humectant, 3 - 15 parts of an emollient, 20 - 100 parts of a solvent, 0.3 - 2.0 parts of a neutralizing agent, 0.1 - 1 part of a preservative, 0.04 - 0.06 parts of a cooling agent, 0.8 - 1.2 parts of a skin conditioner, 0.4 - 0.6 parts of an anti-allergy agent, and 0.02 - 0.04 parts of a pH buffer.

[0073] As an example, the parts by mass of the emulsifier in the sunscreen composition can be 0.8, 0.9, 1.0, 1.2, 1.4, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5 or 5.0 parts.

[0074] Optionally, the parts by mass of the emulsifier in the sunscreen composition are 0.8 to 2.5 parts.

[0075] Optionally, the parts by mass of the emulsifier in the sunscreen composition are 0.8 to 2.0 parts.

[0076] Optionally, the parts by mass of the emulsifier in the sunscreen composition are 0.8 to 1.0 part.

[0077] As an example, the parts by mass of the film-forming agent in the sunscreen composition can be 2, 2.2, 2.4, 2.5, 2.8, 3.0, 3.5, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0 or 10 parts.

[0078] Optionally, the parts by mass of the film-forming agent in the sunscreen composition are 2 to 3 parts.

[0079] As an example, the parts by mass of the humectant in the sunscreen composition can be 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 28, 30, 35, 38 or 40 parts.

[0080] Optionally, the parts by mass of the humectant in the sunscreen composition are 10 to 25 parts.

[0081] As an example, the parts by mass of the solvent in the sunscreen composition can be 20, 30, 50, 80, 90, 95 or 100 parts.

[0082] Optionally, the parts by mass of the solvent in the sunscreen composition are 80 to 100 parts.

[0083] As an example, the parts by mass of the neutralizing agent in the sunscreen composition can be 0.3, 0.5, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9 or 2.0 parts.

[0084] Optionally, the parts by mass of the neutralizing agent in the sunscreen composition are 0.8 to 1.8 parts.

[0085] As an example, the parts by mass of the preservative in the sunscreen composition can be 0.1, 0.11, 0.12, 0.13, 0.15, 0.2, 0.4, 0.6, 0.8 or 1 part.

[0086] Optionally, the parts by mass of the preservative in the sunscreen composition are 0.1 to 0.6 part.

[0087] As an example, the parts by mass of the cooling agent in the sunscreen composition can be 0.04, 0.045, 0.05, 0.055 or 0.06 parts.

[0088] Optionally, the parts by mass of the cooling agent in the sunscreen composition is 0.05 parts.

[0089] As an example, the parts by mass of the skin conditioner in the sunscreen composition can be 0.8, 0.9, 1.0, 1.1 or 1.2 parts.

[0090] Optionally, the parts by mass of the skin conditioner in the sunscreen composition is 1.0 part.

[0091] As an example, the parts by mass of the anti-allergy agent in the sunscreen composition can be 0.4, 0.45, 0.5, 0.55 or 0.6 parts.

[0092] Optionally, the parts by mass of the anti-allergy agent in the sunscreen composition is 0.5 part.

[0093] As an example, the parts by mass of the pH buffer in the sunscreen composition can be 0.02, 0.025, 0.03, 0.035 or 0.04 parts.

[0094] Optionally, the parts by mass of the pH buffer in the sunscreen composition is 0.03 part.

[0095] In some embodiments, the emulsifier includes at least one of polydimethylsiloxane PEG-10 / 15 crosslinked polymer and PEG-10 polydimethylsiloxane; and / or, the film-forming agent includes silicone elastomer; and / or, the moisturizer includes at least one of glycerin and butanediol; and / or, the solvent includes deionized water; and / or, the neutralizer includes at least one of aminomethyl propanol and sodium hydroxide; and / or, the preservative includes at least one of chlorphenesin, phenoxyethanol and ethylhexylglycerin; and / or, the cooling agent includes menthol; and / or, the skin conditioner includes Melissa officinalis extract; and / or, the anti-allergy agent includes Golden Crabapple Fruit Oil; and / or, the pH buffer includes sodium citrate; and / or, the fragrance includes mint essence.

[0096] PEG-10 polydimethylsiloxane, which has a relatively low refractive index and is an excellent carrier for sunscreen agents. When used as an emulsifier, it can make the aqueous phase and the oil phase form a uniform mixture, providing excellent spreadability and a refreshing feeling. When compounded with dimethicone PEG-10 / 15 cross-linked polymer with the same low refractive index, it can further improve the spreading effect of the sunscreen composition formulation system on the skin and further reduce the sense of heaviness. Using aminomethylpropanol or sodium hydroxide as a neutralizing agent can adjust the pH of the sunscreen composition to about 7.0, which can avoid the recrystallization problem of the aqueous-phase sunscreen agent phenylbenzimidazole sulfonic acid and disodium phenyl dibenzimidazole tetrasulfonate, ensuring the formation of a uniform and complete sunscreen film layer with good sunscreen effect. In addition, by adding the anti-allergy agent Malus spectabilis oil, this natural plant oil can resist the damage of UV to skin DNA, reduce pro-inflammatory cytokines, and improve the sun protection factor.

[0097] As an example, the dosage form of the sunscreen composition can be sunscreen cream, sunscreen gel, sunscreen milk, sunscreen liquid, etc.

[0098] The second aspect of the implementation mode of the present application provides a preparation method of the sunscreen composition as described in the first aspect, including the following steps: providing raw materials for the sunscreen composition and mixing the raw materials to obtain the sunscreen composition.

[0099] Examples

[0100] The following examples more specifically describe the content disclosed in the present application. These examples are only for illustrative purposes, because various modifications and changes within the scope of the present application disclosure are obvious to those skilled in the art. Unless otherwise stated, all parts, percentages, and ratios reported in the following examples are based on mass, and all reagents used in the examples are commercially available or synthesized according to conventional methods and can be used directly without further treatment, and the instruments used in the examples are all commercially available.

[0101] Example 1

[0102] In this example, the sunscreen composition, by mass, includes the following components

[0103] 5 parts of polysiloxane-15, 2.2 parts of terephthalylidene dicamphor sulfonic acid, 7.5 parts of phenylbenzimidazole sulfonic acid, 1 part of disodium phenyl dibenzimidazole tetrasulfonate, 3 parts of ethylhexyl salicylate, 0.8 part of PEG-10 polydimethylsiloxane, 2 parts of silicone elastomer, 19 parts of glycerin, 2 parts of butanediol, 4 parts of 1.5cst polydimethylsiloxane, 100 parts of deionized water, 1.1 parts of sodium hydroxide, 0.05 part of chlorphenesin, 0.05 part of phenoxyethanol / ethylhexylglycerin, 0.05 part of menthol, 0.5 part of Malus spectabilis oil, 0.03 part of sodium citrate, 1.0 part of Melissa officinalis extract.

[0104] The preparation method of the sunscreen composition provided in this embodiment includes the following steps:

[0105] S1. Add glycerin, butylene glycol, chlorphenesin, phenoxyethanol / ethylhexylglycerin into a stirrer in proportion, heat to 70°C - 75°C, stir until dissolved uniformly, cool down to 40°C - 45°C, then add menthol and stir until dissolved uniformly to obtain a premixed liquid A1;

[0106] S2. Add silicone elastomer and PEG - 10 dimethicone into a stirrer in proportion, stir until dissolved uniformly, then add polyorganosiloxane - 15, ethylhexyl salicylate, dimethicone into it in proportion and stir until dissolved uniformly to obtain an oil - phase mixed liquid B;

[0107] S3. Add deionized water and sodium hydroxide into a stirrer in proportion, stir until dissolved uniformly, then add phenylbenzimidazole sulfonic acid, disodium phenyl dibenzimidazole tetrasulfonate, sodium citrate of terephthalylidene dicamphor sulfonic acid into it in proportion and stir until dissolved uniformly to obtain a premixed liquid A2;

[0108] S4. Stir the premixed liquid A1, premixed liquid A2 and a certain proportion of Melissa officinalis extract uniformly to obtain a mixed liquid A;

[0109] S5. Add the oil - phase mixed liquid B into an emulsifying tank, conduct a stirring and scraping operation on the edge, drop - wise add the mixed liquid A, after stirring uniformly, then add Malus spectabilis oil in proportion, stir evenly, and after passing the inspection, discharge the product,

[0110] to obtain the sunscreen composition of Example 1.

[0111] Example 2

[0112] In this embodiment, the sunscreen composition, by mass, includes the following components:

[0113] 5 parts of polyorganosiloxane - 15, 2.2 parts of terephthalylidene dicamphor sulfonic acid, 7.5 parts of phenylbenzimidazole sulfonic acid, 1 part of disodium phenyl dibenzimidazole tetrasulfonate, 3 parts of ethylhexyl salicylate, 0.8 part of PEG - 10 dimethicone, 2 parts of silicone elastomer, 19 parts of glycerin, 2 parts of butylene glycol, 5 parts of C 9-12 alkane, 2 parts of 1.5cst dimethicone, 100 parts of deionized water, 1.1 parts of sodium hydroxide, 0.05 part of chlorphenesin, 0.05 part of phenoxyethanol / ethylhexylglycerin, 0.05 part of menthol, 0.5 part of Malus spectabilis oil, 0.03 part of sodium citrate, 1 part of Melissa officinalis extract.

[0114] The preparation method of the sunscreen composition provided in this embodiment includes the following steps:

[0115] S1. Add glycerol, butylene glycol, chlorphenesin, phenoxyethanol / ethylhexylglycerin into a stirrer in proportion, heat to 70°C - 75°C, stir until dissolved evenly, cool down to 40°C - 45°C, then add menthol and stir until dissolved evenly to obtain premixed liquid A1;

[0116] S2. Add C 9-12 alkane, silicone elastomer, PEG - 10 dimethicone into a stirrer and stir until dissolved evenly. Then add dimethicone - 15, ethylhexyl salicylate, dimethicone in proportion and stir until dissolved evenly to obtain oil - phase mixture B;

[0117] S3. Add deionized water and sodium hydroxide into a stirrer and stir until dissolved evenly. Then add phenylbenzimidazole sulfonic acid, disodium phenyl dibenzimidazole tetrasulfonate, sodium citrate of terephthalylidene dicamphor sulfonic acid in proportion and stir until dissolved evenly to obtain premixed liquid A2;

[0118] S4. Stir the premixed liquids A1 and A2 and a certain proportion of Melissa officinalis extract evenly to obtain mixture A;

[0119] S5. Add the oil - phase mixture B into an emulsifying tank, perform stirring and scraping operation on the edge, and drop - add the mixture A. After stirring evenly, add Malus spectabilis oil in proportion and stir evenly. After passing the inspection, discharge the product,

[0120] to obtain the sunscreen composition of Example 2.

[0121] Example 3

[0122] In this example, the sunscreen composition, by mass, comprises the following components,

[0123] 3 parts of dimethicone - 15, 2.2 parts of terephthalylidene dicamphor sulfonic acid, 8 parts of phenylbenzimidazole sulfonic acid, 1.5 parts of disodium phenyl dibenzimidazole tetrasulfonate, 3 parts of ethylhexyl salicylate, 0.9 part of dimethicone PEG - 10 / 15 cross - polymer, 2 parts of silicone elastomer, 8 parts of glycerol, 2 parts of butylene glycol, 2 parts of C 9-12 alkane, 1 part of 1.5cst dimethicone, 100 parts of deionized water, 1.5 parts of sodium hydroxide, 0.05 part of chlorphenesin, 0.05 part of phenoxyethanol / ethylhexylglycerin, 0.05 part of menthol, 0.5 part of Malus spectabilis oil, 0.03 part of sodium citrate, 1.0 part of Melissa officinalis extract.

[0124] The preparation method is the same as that of Example 2 to obtain the sunscreen composition of Example 3.

[0125] Example 4

[0126] Compared with Example 1, the difference is only that the mass fraction of polysiloxane-15 is adjusted from 5 parts to 3 parts.

[0127] In this example, the sunscreen composition comprises the following components in parts by mass:

[0128] 3 parts of polysiloxane-15, 2.2 parts of terephthalylidene dicamphor sulfonic acid, 7.5 parts of phenylbenzimidazole sulfonic acid, 1 part of disodium phenyl dibenzimidazole tetrasulfonate, 3 parts of ethylhexyl salicylate, 0.8 part of PEG-10 polydimethylsiloxane, 2 parts of silicone elastomer, 19 parts of glycerol, 2 parts of butanediol, 4 parts of 1.5cst polydimethylsiloxane, 100 parts of deionized water, 1.1 parts of sodium hydroxide, 0.05 part of chlorphenesin, 0.05 part of phenoxyethanol / ethylhexylglycerin, 0.05 part of menthol, 0.5 part of golden crabapple fruit oil, 0.03 part of sodium citrate, 1.0 part of Melissa officinalis extract.

[0129] The preparation method is the same as that of Example 1 to obtain the sunscreen composition of Example 4.

[0130] Example 5

[0131] Compared with Example 1, the difference is only that the mass fraction of polysiloxane-15 is adjusted from 5 parts to 8 parts.

[0132] In this example, the sunscreen composition comprises the following components in parts by mass:

[0133] 8 parts of polysiloxane-15, 2.2 parts of terephthalylidene dicamphor sulfonic acid, 7.5 parts of phenylbenzimidazole sulfonic acid, 1 part of disodium phenyl dibenzimidazole tetrasulfonate, 3 parts of ethylhexyl salicylate, 0.8 part of PEG-10 polydimethylsiloxane, 2 parts of silicone elastomer, 19 parts of glycerol, 2 parts of butanediol, 4 parts of 1.5cst polydimethylsiloxane, 100 parts of deionized water, 1.1 parts of sodium hydroxide, 0.05 part of chlorphenesin, 0.05 part of phenoxyethanol / ethylhexylglycerin, 0.05 part of menthol, 0.5 part of golden crabapple fruit oil, 0.03 part of sodium citrate, 1.0 part of Melissa officinalis extract.

[0134] The preparation method is the same as that of Example 1 to obtain the sunscreen composition of Example 5.

[0135] Example 6

[0136] Compared with Example 2, the difference is only that the mass fraction of polysiloxane-15 is adjusted from 5 parts to 3 parts.

[0137] In this example, the sunscreen composition comprises the following components in parts by mass:

[0138] 3 parts of Polysiloxane-15, 2.2 parts of terephthalylidene dicamphor sulfonic acid, 7.5 parts of phenylbenzimidazole sulfonic acid, 1 part of disodium phenyl dibenzimidazole tetrasulfonate, 3 parts of ethylhexyl salicylate, 0.8 part of PEG-10 polydimethylsiloxane, 2 parts of silicone elastomer, 19 parts of glycerin, 2 parts of butanediol, 5 parts of C 9-12 alkanes, 2 parts of 1.5cst polydimethylsiloxane, 100 parts of deionized water, 1.1 parts of sodium hydroxide, 0.05 part of chlorphenesin, 0.05 part of phenoxyethanol / ethylhexylglycerin, 0.05 part of menthol, 0.5 part of golden crabapple fruit oil, 0.03 part of sodium citrate, 1 part of Melissa officinalis extract.

[0139] The preparation method is the same as that of Example 2 to obtain the sunscreen composition of Example 6.

[0140] Example 7

[0141] Compared with Example 2, the difference is only that the mass fraction of Polysiloxane-15 is adjusted from 5 parts to 8 parts.

[0142] In this example, the sunscreen composition, by mass, comprises the following components

[0143] 8 parts of Polysiloxane-15, 2.2 parts of terephthalylidene dicamphor sulfonic acid, 7.5 parts of phenylbenzimidazole sulfonic acid, 1 part of disodium phenyl dibenzimidazole tetrasulfonate, 3 parts of ethylhexyl salicylate, 0.8 part of PEG-10 polydimethylsiloxane, 2 parts of silicone elastomer, 19 parts of glycerin, 2 parts of butanediol, 5 parts of C 9-12 alkanes, 2 parts of 1.5cst polydimethylsiloxane, 100 parts of deionized water, 1.1 parts of sodium hydroxide, 0.05 part of chlorphenesin, 0.05 part of phenoxyethanol / ethylhexylglycerin, 0.05 part of menthol, 0.5 part of golden crabapple fruit oil, 0.03 part of sodium citrate, 1 part of Melissa officinalis extract.

[0144] The preparation method is the same as that of Example 2 to obtain the sunscreen composition of Example 7.

[0145] Example 8

[0146] Compared with Example 2, the difference is only that the mass fraction of C 9-12 alkanes is adjusted from 5 parts to 7 parts.

[0147] In this example, the sunscreen composition, by mass, comprises the following components

[0148] 5 parts of Polysiloxane-15, 2.2 parts of terephthalylidene dicamphor sulfonic acid, 7.5 parts of phenylbenzimidazole sulfonic acid, 1 part of disodium phenyl dibenzimidazole tetrasulfonate, 3 parts of ethylhexyl salicylate, 0.8 part of PEG-10 polydimethylsiloxane, 2 parts of silicone elastomer, 19 parts of glycerin, 2 parts of butanediol, 7 parts of C9-12 Alkane, 2 parts of 1.5 cst polydimethylsiloxane, 100 parts of deionized water, 1.1 parts of sodium hydroxide, 0.05 part of chlorphenesin, 0.05 part of phenoxyethanol / ethylhexylglycerin, 0.05 part of menthol, 0.5 part of golden crabapple fruit oil, 0.03 part of sodium citrate, 1 part of Melissa officinalis extract.

[0149] The preparation method is the same as that of Example 2 to obtain the sunscreen composition of Example 8.

[0150] Example 9

[0151] Compared with Example 1, the difference is only that the mass fraction of 1.5 cst polydimethylsiloxane is adjusted from 4 parts to 5 parts.

[0152] In this example, the sunscreen composition, by mass fraction, comprises the following components

[0153] 5 parts of polysiloxane-15, 2.2 parts of terephthalylidene dicamphor sulfonic acid, 7.5 parts of phenylbenzimidazole sulfonic acid, 1 part of disodium phenyl dibenzimidazole tetrasulfonate, 3 parts of ethylhexyl salicylate, 0.8 part of PEG-10 polydimethylsiloxane, 2 parts of silicone elastomer, 19 parts of glycerol, 2 parts of butanediol, 5 parts of 1.5 cst polydimethylsiloxane, 100 parts of deionized water, 1.1 parts of sodium hydroxide, 0.05 part of chlorphenesin, 0.05 part of phenoxyethanol / ethylhexylglycerin, 0.05 part of menthol, 0.5 part of golden crabapple fruit oil, 0.03 part of sodium citrate, 1.0 part of Melissa officinalis extract.

[0154] The preparation method is the same as that of Example 2 to obtain the sunscreen composition of Example 9.

[0155] Example 10

[0156] Compared with Example 2, the difference is only that the mass fraction of 1.5 cst polydimethylsiloxane is adjusted from 2 parts to 5 parts.

[0157] In this example, the sunscreen composition, by mass fraction, comprises the following components

[0158] 5 parts of polysiloxane-15, 2.2 parts of terephthalylidene dicamphor sulfonic acid, 7.5 parts of phenylbenzimidazole sulfonic acid, 1 part of disodium phenyl dibenzimidazole tetrasulfonate, 3 parts of ethylhexyl salicylate, 0.8 part of PEG-10 polydimethylsiloxane, 2 parts of silicone elastomer, 19 parts of glycerol, 2 parts of butanediol, 5 parts of C 9-12 Alkane, 5 parts of 1.5 cst polydimethylsiloxane, 100 parts of deionized water, 1.1 parts of sodium hydroxide, 0.05 part of chlorphenesin, 0.05 part of phenoxyethanol / ethylhexylglycerin, 0.05 part of menthol, 0.5 part of golden crabapple fruit oil, 0.03 part of sodium citrate, 1 part of Melissa officinalis extract.

[0159] The preparation method was the same as that of Example 2 to obtain the sunscreen composition of Example 10.

[0160] Comparative Example 1

[0161] Compared with Example 1, the only difference was that polysiloxane-15 was replaced with ethylhexyl methoxycinnamate.

[0162] In this comparative example, the sunscreen composition included the following components in parts by mass:

[0163] 5 parts of ethylhexyl methoxycinnamate, 2.2 parts of terephthalylidene dicamphor sulfonic acid, 7.5 parts of phenylbenzimidazole sulfonic acid, 1 part of disodium phenyl dibenzimidazole tetrasulfonate, 3 parts of ethylhexyl salicylate, 0.8 part of PEG-10 polydimethylsiloxane, 2 parts of silicone elastomer, 19 parts of glycerol, 2 parts of butanediol, 4 parts of 1.5cst polydimethylsiloxane, 100 parts of deionized water, 1.1 parts of sodium hydroxide, 0.05 part of chlorphenesin, 0.05 part of phenoxyethanol / ethylhexylglycerin, 0.05 part of menthol, 0.5 part of golden crabapple fruit oil, 0.03 part of sodium citrate, 1.0 part of Melissa officinalis extract.

[0164] The preparation method was the same as that of Example 1 to obtain the sunscreen composition of Comparative Example 1.

[0165] Comparative Example 2

[0166] Compared with Example 1, the only difference was that 1.5cst polydimethylsiloxane was replaced with coco-caprylate / caprate.

[0167] In this comparative example, the sunscreen composition included the following components in parts by mass:

[0168] 5 parts of polysiloxane-15, 2.2 parts of terephthalylidene dicamphor sulfonic acid, 7.5 parts of phenylbenzimidazole sulfonic acid, 1 part of disodium phenyl dibenzimidazole tetrasulfonate, 3 parts of ethylhexyl salicylate, 0.8 part of PEG-10 polydimethylsiloxane, 2 parts of silicone elastomer, 19 parts of glycerol, 2 parts of butanediol, 4 parts of coco-caprylate / caprate, 100 parts of deionized water, 1.1 parts of sodium hydroxide, 0.05 part of chlorphenesin, 0.05 part of phenoxyethanol / ethylhexylglycerin, 0.05 part of menthol, 0.5 part of golden crabapple fruit oil, 0.03 part of sodium citrate, 1.0 part of Melissa officinalis extract.

[0169] The preparation method was the same as that of Example 1 to obtain the sunscreen composition of Comparative Example 2.

[0170] Comparative Example 3

[0171] Compared with Example 2, the only difference was that polysiloxane-15 was replaced with ethylhexyl methoxycinnamate.

[0172] In this comparative example, the sunscreen composition includes the following components in parts by mass:

[0173] 5 parts of ethylhexyl methoxycinnamate, 2.2 parts of terephthalylidene dicamphor sulfonic acid, 7.5 parts of phenylbenzimidazole sulfonic acid, 1 part of disodium phenyl dibenzimidazole tetrasulfonate, 3 parts of ethylhexyl salicylate, 0.8 part of PEG-10 polydimethylsiloxane, 2 parts of silicone elastomer, 19 parts of glycerin, 2 parts of butanediol, 5 parts of C 9-12 alkane, 2 parts of 1.5cst polydimethylsiloxane, 100 parts of deionized water, 1.1 parts of sodium hydroxide, 0.05 part of chlorphenesin, 0.05 part of phenoxyethanol / ethylhexylglycerin, 0.05 part of menthol, 0.5 part of golden crabapple fruit oil, 0.03 part of sodium citrate, 1 part of Melissa officinalis extract.

[0174] The preparation method is the same as that of Example 2 to obtain the sunscreen composition of Comparative Example 3.

[0175] Comparative Example 4

[0176] Compared with Example 2, the difference is only that C 9-12 alkane is replaced with coco-caprylate / caprate.

[0177] In this comparative example, the sunscreen composition includes the following components in parts by mass:

[0178] 5 parts of polysiloxane-15, 2.2 parts of terephthalylidene dicamphor sulfonic acid, 7.5 parts of phenylbenzimidazole sulfonic acid, 1 part of disodium phenyl dibenzimidazole tetrasulfonate, 3 parts of ethylhexyl salicylate, 0.8 part of PEG-10 polydimethylsiloxane, 2 parts of silicone elastomer, 19 parts of glycerin, 2 parts of butanediol, 5 parts of coco-caprylate / caprate, 2 parts of 1.5cst polydimethylsiloxane, 100 parts of deionized water, 1.1 parts of sodium hydroxide, 0.05 part of chlorphenesin, 0.05 part of phenoxyethanol / ethylhexylglycerin, 0.05 part of menthol, 0.5 part of golden crabapple fruit oil, 0.03 part of sodium citrate, 1 part of Melissa officinalis extract.

[0179] The preparation method is the same as that of Example 2 to obtain the sunscreen composition of Comparative Example 4.

[0180] Comparative Example 5

[0181] Compared with Example 2, the difference is only that 1.5cst polydimethylsiloxane is replaced with coco-caprylate / caprate.

[0182] In this comparative example, the sunscreen composition includes the following components in parts by mass:

[0183] 5 parts of Polysiloxane-15, 2.2 parts of terephthalylidene dicamphor sulfonic acid, 7.5 parts of phenylbenzimidazole sulfonic acid, 1 part of disodium phenyl dibenzimidazole tetrasulfonate, 3 parts of ethylhexyl salicylate, 0.8 part of PEG-10 polydimethylsiloxane, 2 parts of silicone elastomer, 19 parts of glycerin, 2 parts of butanediol, 5 parts of C 9-12 alkanes, 2 parts of coco alcohol - octanoate / decanoate, 100 parts of deionized water, 1.1 parts of sodium hydroxide, 0.05 part of chlorphenesin, 0.05 part of phenoxyethanol / ethylhexylglycerin, 0.05 part of menthol, 0.5 part of golden crabapple fruit oil, 0.03 part of sodium citrate, 1 part of Melissa officinalis extract.

[0184] The preparation method is the same as that in Example 2 to obtain the sunscreen composition of Comparative Example 5.

[0185] Comparative Example 6

[0186] Compared with Example 2, the difference is only that the mass fraction of PEG-10 polydimethylsiloxane is adjusted from 0.8 part to 3.0 parts.

[0187] In this comparative example, the sunscreen composition, in parts by mass, comprises the following components

[0188] 5 parts of Polysiloxane-15, 2.2 parts of terephthalylidene dicamphor sulfonic acid, 7.5 parts of phenylbenzimidazole sulfonic acid, 1 part of disodium phenyl dibenzimidazole tetrasulfonate, 3 parts of ethylhexyl salicylate, 3.0 parts of PEG-10 polydimethylsiloxane, 2 parts of silicone elastomer, 19 parts of glycerin, 2 parts of butanediol, 5 parts of C 9-12 alkanes, 2 parts of 1.5cst polydimethylsiloxane, 100 parts of deionized water, 1.1 parts of sodium hydroxide, 0.05 part of chlorphenesin, 0.05 part of phenoxyethanol / ethylhexylglycerin, 0.05 part of menthol, 0.5 part of golden crabapple fruit oil, 0.03 part of sodium citrate, 1.0 part of Melissa officinalis extract.

[0189] The preparation method is the same as that in Example 2 to obtain the sunscreen composition of Comparative Example 6.

[0190] Comparative Example 7

[0191] Compared with Example 2, the difference is only that PEG-10 polydimethylsiloxane is replaced by cetyl PEG / PPG-10 / 1 polydimethylsiloxane.

[0192] In this comparative example, the sunscreen composition, in parts by mass, comprises the following components

[0193] 5 parts of Polysiloxane - 15, 2.2 parts of p - Phenylenedimethyldicamphorsulfonic Acid, 7.5 parts of Phenylbenzimidazole Sulfonic Acid, 1 part of Disodium Phenyl Dibenzimidazole Tetrasulfonate, 3 parts of Ethylhexyl Salicylate, 0.8 part of Cetyl PEG / PPG - 10 / 1 Polydimethylsiloxane, 2 parts of Silicone Elastomer, 19 parts of Glycerol, 2 parts of Butylene Glycol, 5 parts of C 9-12 Alkane, 2 parts of 1.5cst Polydimethylsiloxane, 100 parts of Deionized Water, 1.1 parts of Sodium Hydroxide, 0.05 part of Chlorphenesin, 0.05 part of Phenoxyethanol / Ethylhexylglycerin, 0.05 part of Menthol, 0.5 part of Golden Crabapple Fruit Oil, 0.03 part of Sodium Citrate, 1.0 part of Melissa Officinalis Extract.

[0194] The preparation method is the same as that in Example 2 to obtain the sunscreen composition of Comparative Example 7.

[0195] Comparative Example 8

[0196] Compared with Example 1, the difference is only that the mass fraction of 1.5cst Polydimethylsiloxane is adjusted from 4 parts to 10 parts.

[0197] In this comparative example, the sunscreen composition, by mass fraction, comprises the following components,

[0198] 5 parts of Polysiloxane - 15, 2.2 parts of p - Phenylenedimethyldicamphorsulfonic Acid, 7.5 parts of Phenylbenzimidazole Sulfonic Acid, 1 part of Disodium Phenyl Dibenzimidazole Tetrasulfonate, 3 parts of Ethylhexyl Salicylate, 0.8 part of PEG - 10 Polydimethylsiloxane, 2 parts of Silicone Elastomer, 19 parts of Glycerol, 2 parts of Butylene Glycol, 10 parts of 1.5cst Polydimethylsiloxane, 100 parts of Deionized Water, 1.1 parts of Sodium Hydroxide, 0.05 part of Chlorphenesin, 0.05 part of Phenoxyethanol / Ethylhexylglycerin, 0.05 part of Menthol, 0.5 part of Golden Crabapple Fruit Oil, 0.03 part of Sodium Citrate, 1.0 part of Melissa Officinalis Extract.

[0199] The preparation method is the same as that in Example 1 to obtain the sunscreen composition of Comparative Example 8.

[0200] Comparative Example 9

[0201] Compared with Example 1, the differences are only that the mass fraction of 1.5cst Polydimethylsiloxane is adjusted from 4 parts to 10 parts and the mass fraction of Polysiloxane - 15 is adjusted from 5 parts to 4 parts.

[0202] In this comparative example, the sunscreen composition, by mass fraction, comprises the following components,

[0203] 4 parts of Polysiloxane-15, 2.2 parts of terephthalylidene dicamphor sulfonic acid, 7.5 parts of phenylbenzimidazole sulfonic acid, 1 part of disodium phenyl dibenzimidazole tetrasulfonate, 3 parts of ethylhexyl salicylate, 0.8 part of PEG-10 polydimethylsiloxane, 2 parts of silicone elastomer, 19 parts of glycerin, 2 parts of butanediol, 10 parts of 1.5cst polydimethylsiloxane, 100 parts of deionized water, 1.1 parts of sodium hydroxide, 0.05 part of chlorphenesin, 0.05 part of phenoxyethanol / ethylhexylglycerin, 0.05 part of menthol, 0.5 part of golden crabapple fruit oil, 0.03 part of sodium citrate, 1.0 part of Melissa officinalis extract. The preparation method is the same as that of Example 1 to obtain the sunscreen composition of Comparative Example 9.

[0204] Comparative Example 10

[0205] Compared with Example 2, the difference is only that the mass fraction of 1.5cst polydimethylsiloxane is adjusted from 2 parts to 10 parts.

[0206] In this comparative example, the sunscreen composition, by mass fraction, comprises the following components

[0207] 5 parts of Polysiloxane-15, 2.2 parts of terephthalylidene dicamphor sulfonic acid, 7.5 parts of phenylbenzimidazole sulfonic acid, 1 part of disodium phenyl dibenzimidazole tetrasulfonate, 3 parts of ethylhexyl salicylate, 0.8 part of PEG-10 polydimethylsiloxane, 2 parts of silicone elastomer, 19 parts of glycerin, 2 parts of butanediol, 5 parts of C 9-12 alkane, 10 parts of 1.5cst polydimethylsiloxane, 100 parts of deionized water, 1.1 parts of sodium hydroxide, 0.05 part of chlorphenesin, 0.05 part of phenoxyethanol / ethylhexylglycerin, 0.05 part of menthol, 0.5 part of golden crabapple fruit oil, 0.03 part of sodium citrate, 1 part of Melissa officinalis extract.

[0208] The preparation method is the same as that of Example 2 to obtain the sunscreen composition of Comparative Example 10.

[0209] Comparative Example 11

[0210] Compared with Example 2, the difference is only that the mass fraction of Polysiloxane-15 is adjusted from 5 parts to 20 parts.

[0211] In this comparative example, the sunscreen composition, by mass fraction, comprises the following components

[0212] 20 parts of Polysiloxane-15, 2.2 parts of terephthalylidene dicamphor sulfonic acid, 7.5 parts of phenylbenzimidazole sulfonic acid, 1 part of disodium phenyl dibenzimidazole tetrasulfonate, 3 parts of ethylhexyl salicylate, 0.8 part of PEG-10 polydimethylsiloxane, 2 parts of silicone elastomer, 19 parts of glycerin, 2 parts of butanediol, 5 parts of C 9-12Alkanes, 2 parts of 1.5cst polydimethylsiloxane, 100 parts of deionized water, 1.1 parts of sodium hydroxide, 0.05 parts of chlorphenesin, 0.05 parts of phenoxyethanol / ethylhexylglycerin, 0.05 parts of menthol, 0.5 parts of golden crabapple oil, 0.03 parts of sodium citrate, 1 part of Melissa officinalis extract.

[0213] The preparation method is the same as that in Example 2 to obtain the sunscreen composition of Comparative Example 11.

[0214] Testing section

[0215] The sunscreen compositions prepared in Examples 1 to 10 and the sunscreen compositions prepared in Comparative Examples 1 to 11 were detected. The specific test methods and test results are as follows:

[0216] 1. High temperature, low temperature and cyclic storage stability test

[0217] The sunscreen compositions prepared in Examples 1 to 10 and Comparative Examples 1 to 11 were respectively filled into 20 mL PET bottles and stored at 48 °C and -18 °C for 2 months and cyclically stored at -15 °C / 48 °C for 3 times, each time for 24 h. That is, after storing at -15 °C for 24 h, it was stored at room temperature for 24 h and then placed in a constant temperature oven at 48 °C for 24 h, and cycled 3 times in sequence. Observe the stability of the product and judge according to the following 3-level judgment criteria.

[0218] Judgment, and the specific test results are shown in Table 1.

[0219] Grade A: It means that compared with before the test, there is no obvious oil leakage, water separation, coarse particles or demulsification in the appearance;

[0220] Grade B: It means that compared with before the test, there is slight oil leakage, water separation, coarse particles or demulsification;

[0221] Grade C: It means that compared with before the test, there is obvious oil leakage, water separation, coarse particles or demulsification.

[0222] 2. Centrifugal stability test

[0223] After standing the sunscreen compositions prepared in Examples 1 to 10 and Comparative Examples 1 to 11 for one day respectively, 8-10 g of paste was taken into a centrifuge tube respectively, and in the centrifuge, the rotation speed was controlled at 4000 r / min and centrifuged for 30 min. Observe the stability of the product and judge according to the above 3-level judgment criteria. The specific test results are shown in Table 1.

[0224] Table 1

[0225] Test High temperature 48°C Low temperature -18°C High and low temperature cycle Centrifugation Transparency Example 1 A A A A Transparent Example 2 A A A A Transparent Example 3 A A A A Transparent Example 4 A A A A Translucent Example 5 A A A A Transparent Example 6 A A A A Translucent Example 7 A A A A Transparent Example 8 A A A A Transparent Example 9 A A A A Transparent Example 10 A A A A Transparent Comparative Example 1 C B C C Milky white Comparative Example 2 B A B B Slightly milky white Comparative Example 3 C B B B Milky white Comparative Example 4 B C C B Milky white Comparative Example 5 B B B C Slightly milky white Comparative Example 6 C C C B Milky white Comparative Example 7 C C C C Milky white Comparative Example 8 B B B B Milky white Comparative Example 9 C C C C Milky white Comparative Example 10 C C C C Milky white Comparative Example 11 C C C C Milky white

[0226] 3. Refreshing and sticky degree test

[0227] 80 female subjects aged 20 - 45 years old were selected and randomly divided into 8 groups with 10 people in each group. The sunscreen compositions of Examples 1 - 10 and Comparative Examples 1 - 10 were tested in corresponding groups one by one:

[0228] (1) After cleansing the face, applying toner, and then applying skin care cream according to the normal skin care process, the sunscreen compositions of Examples 1 - 10 and Comparative Examples 1 - 10 were respectively applied, and the freshness and water - resistant film - forming property of the products were evaluated sensorially.

[0229] (2) A 2 cm * 2 cm square was drawn on the forearm. 0.5 g of the sunscreen composition samples of Examples 1 - 10 and Comparative Examples 1 - 10 were evenly applied to the square. After the film was formed, the arm was placed in a box filled with shredded paper. The arm was taken out and observed whether there was shredded paper at the square, and the number of shredded papers was recorded. The more the number of shredded papers, the more sticky the sunscreen product was. The specific test results are shown in Table 2 below.

[0230] The scoring criteria are as follows:

[0231] The freshness was scored from 0 to 10 points. The higher the score, the higher the freshness;

[0232] The water - resistant film - forming property was scored from 0 to 10 points. The higher the score, the better the water - resistant film - forming property;

[0233] The stickiness was scored from 0 to 10 points. The higher the score, the higher the stickiness.

[0234] Table 2

[0235]

[0236]

[0237] From the content of Table 1 and Table 2, it can be seen that when polysiloxane - 15 is used as a sunscreen agent, polydimethylsiloxane or the combination of polydimethylsiloxane and C 9-12 alkanes is used as an emollient, the combination of polysiloxane - 15 and polydimethylsiloxane or the combination of polysiloxane - 15 and polydimethylsiloxane and C 9-12 alkanes can play a synergistic effect, improving the stability, transparency, freshness, water - resistant film - forming property of the product and reducing the stickiness of the product.

[0238] Specifically, when the emollient is polydimethylsiloxane, when the mass ratio of polysiloxane-15 to polydimethylsiloxane is 0.75:1, 1:1, 1.25:1 or 2:1 (corresponding to Examples 1, 4, 5, 9), the stability grade of the product is A, the appearance of the product is transparent to semi-transparent, the freshness value of the product is higher than 8.7, the water-resistant film-forming property is higher than 9.1, and the greasiness is 0, indicating that the combination of polysiloxane-15 and polydimethylsiloxane can exert a significant synergistic effect, effectively improving the stability, transparency, freshness, water-resistant film-forming property of the product and reducing the greasiness of the product; when the emollient is a combination of polydimethylsiloxane and C 9-12 alkanes, when the mass ratio of polysiloxane-15 to polydimethylsiloxane is 1:1, 1.5:1, 2.5:1, 3:1 or 4:1 (corresponding to Examples 2, 3, 6, 7, 8, 10), the stability grade of the product is A, the appearance of the product is transparent to semi-transparent, the freshness value of the product is higher than 8.9, the water-resistant film-forming property is higher than 9.1, and the greasiness is 0, indicating that the combination of polysiloxane-15 and polydimethylsiloxane and C 9-12 alkanes can exert a significant synergistic effect, effectively improving the stability, transparency, freshness, water-resistant film-forming property of the product and reducing the greasiness of the product. However, for the products prepared from the formulations of Comparative Examples 1-11, their stability grades are B or C, their appearances are milky white, their freshness values are as low as 5.3, their water-resistant film-forming properties are as low as 5.0, and their greasiness can be as high as 5.

Claims

1. A sunscreen composition, characterized in that, It includes a sunscreen agent and an emollient; The sunscreen agent includes Polysilicone-15, and the emollient is Polydimethylsiloxane or a combination of Polydimethylsiloxane and C 9-12 alkanes; The mass ratio of the polysiloxane-15 to the polydimethylsiloxane is (0.6-9.5):

1.

2. The sunscreen composition according to claim 1, wherein The sunscreen composition includes 11.8 to 29.5 parts of the sunscreen agent and 3 to 15 parts of the emollient.

3. The sunscreen composition according to claim 2, characterized in that, The sunscreen agent includes 3 to 9.5 parts of the polysiloxane-15.

4. The sunscreen composition according to claim 2, wherein, The emollient is 3 to 5 parts of the polydimethylsiloxane or a combination of 1 to 5 parts of the polydimethylsiloxane and 2 to 10 parts of the 9-12 alkane.

5. The sunscreen composition according to claim 2, wherein The sunscreen agent further includes 1.5 to 4.5 parts of ethylhexyl salicylate, 6 to 8 parts of phenylbenzimidazole sulfonic acid, 1 to 5 parts of disodium phenyl dibenzimidazole tetrasulfonate, and 0.3 to 2.5 parts of terephthalylidene dicamphor sulfonic acid.

6. The sunscreen composition according to claim 1, characterized in that, The sunscreen composition further includes at least one of an emulsifier, a film-forming agent, a humectant, a solvent, a neutralizer, a preservative, a cooling agent, a skin conditioner, an anti-allergy agent, a pH buffer, and a fragrance.

7. The sunscreen composition according to claim 6, wherein, By mass, the sunscreen composition includes the following components: 11.8 to 29.5 parts of sunscreen agent, 0.8 to 5 parts of emulsifier, 2 to 10 parts of film-forming agent, 10 to 40 parts of humectant, 3 to 15 parts of emollient, 20 to 100 parts of solvent, 0.3 to 2.0 parts of neutralizer, 0.1 to 1 part of preservative.

8. The sunscreen composition according to claim 6, characterized in that, By mass, the sunscreen composition includes the following components: 11.8 to 29.5 parts of sunscreen agent, 0.8 to 5 parts of emulsifier, 2 to 10 parts of film-forming agent, 10 to 40 parts of humectant, 3 to 15 parts of emollient, 20 to 100 parts of solvent, 0.3 to 2.0 parts of neutralizer, 0.1 to 1 part of preservative, 0.04 to 0.06 parts of cooling agent, 0.8 to 1.2 parts of skin conditioner, 0.4 to 0.6 parts of anti-allergy agent, 0.02 to 0.04 parts of pH buffer.

9. The sunscreen composition according to claim 6, wherein The emulsifier includes at least one of polydimethylsiloxane PEG-10 / 15 cross-linked polymer and PEG-10 polydimethylsiloxane; and / or, The film-forming agent includes silicone elastomer; and / or, The humectant includes at least one of glycerin and butanediol; and / or, The solvent includes deionized water; and / or, The neutralizer includes at least one of aminomethyl propanol and sodium hydroxide; and / or, The preservative includes at least one of chlorphenesin, phenoxyethanol, and ethylhexylglycerin; and / or, The cooling agent includes menthol; and / or, The skin conditioner includes Melissa officinalis extract; and / or, The anti-allergy agent includes Malus domestica 'Golden Delicious' fruit oil; and / or, The pH buffer includes sodium citrate; and / or, The fragrance includes mint essence.

10. A method for preparing a sunscreen composition according to any one of claims 1 to 9, characterized in that, It includes the following steps: Provide raw materials for the sunscreen composition, mix the raw materials to obtain the sunscreen composition.

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