阅读说明：本技术 包含聚甘油基乳化剂和失水山梨醇基乳化剂的紫外线阻断用化妆品组合物 (UV-blocking cosmetic composition comprising polyglyceryl emulsifier and sorbitan-based emulsifier ) 是由 尹慧仁 朴贞银 刘芝贤 金善映 于 2018-11-20 设计创作，主要内容包括：涉及一种紫外线阻断用化妆品组合物,其包含油、乳化剂、无机基紫外线阻断剂和水相部,所述乳化剂包含聚甘油基乳化剂和失水山梨醇基乳化剂,在所述紫外线阻断效果优异的同时,对皮肤也没有刺激,且制型稳定性优异。(Disclosed is a cosmetic composition for blocking ultraviolet rays, which comprises an oil, an emulsifier, an inorganic ultraviolet ray blocking agent and an aqueous phase part, wherein the emulsifier comprises a polyglyceryl emulsifier and a sorbitan emulsifier, has an excellent ultraviolet ray blocking effect, is not irritated to the skin, and has excellent formulation stability.)

1. A cosmetic composition for blocking ultraviolet ray comprises oil, emulsifier, inorganic ultraviolet ray blocking agent and water phase part,

the emulsifier comprises a polyglyceryl emulsifier and a sorbitan-based emulsifier.

2. The ultraviolet-blocking cosmetic composition according to claim 1,

the polyglyceryl emulsifier comprises one or more selected from the group consisting of polyglyceryl-2 dipolyhydroxystearate, lauryl polyglyceryl-3 dimethiconoethyl dimethicone, diisostearoyl polyglyceryl-3 dimerized linoleate, polyglyceryl-4 diisostearate/polyhydroxystearate/sebacate, polyglyceryl-2 triisostearate, polyglyceryl-3 diisostearate, polyglyceryl-2 diisostearate, and polyglyceryl-3 dimethiconoethyl dimethicone.

3. The ultraviolet-blocking cosmetic composition according to claim 1,

the sorbitan-based emulsifier comprises one or more selected from the group consisting of sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan tristearate, sorbitan monooleate, sorbitan sesquioleate and sorbitan isostearate.

4. The ultraviolet-blocking cosmetic composition according to claim 1,

the emulsifier is present in an amount of 1 to 20% by weight, based on the total weight of the cosmetic composition.

5. The ultraviolet-blocking cosmetic composition according to claim 1,

the oil comprises one or more selected from the group consisting of C12-15 alkyl benzoate, coco-caprylate/caprate, dioctyl ether, coco glycerides, methyl trimethicone, butylene glycol dicaprylate/dicaprate, and caprylic/capric triglyceride.

6. The ultraviolet-blocking cosmetic composition according to claim 1,

the oil is present in an amount of 10 to 40 wt% based on the total weight of the cosmetic composition.

7. The ultraviolet-blocking cosmetic composition according to claim 1,

the inorganic-based ultraviolet blocking agent is one or more selected from the group consisting of titanium dioxide, zinc oxide, and iron oxide.

8. The ultraviolet-blocking cosmetic composition according to claim 1,

the content of the inorganic-based ultraviolet blocker is 10 to 40% by weight, based on the total weight of the cosmetic composition.

9. The ultraviolet-blocking cosmetic composition according to claim 1,

the aqueous phase portion includes one or more selected from the group consisting of water, hydrogen chloride, butylene glycol, ethylhexyl glycerin, and glyceryl caprylate.

10. The ultraviolet-blocking cosmetic composition according to claim 1,

the aqueous phase part is contained in an amount of 20 to 50% by weight, based on the total weight of the cosmetic composition.

11. The ultraviolet-blocking cosmetic composition according to claim 1,

the cosmetic composition further comprises more than one of powder, wax and inorganic thickener.

12. The ultraviolet-blocking cosmetic composition according to claim 11,

the content of the powder is 1 to 10% by weight based on the total weight of the cosmetic composition.

13. The ultraviolet-blocking cosmetic composition according to claim 11,

the wax is present in an amount of 0.5 to 5% by weight, based on the total weight of the cosmetic composition.

14. The ultraviolet-blocking cosmetic composition according to claim 11,

the inorganic thickener is a hectorite-based inorganic thickener.

15. The ultraviolet-blocking cosmetic composition according to claim 11,

the inorganic thickener is contained in an amount of 0.5 to 5% by weight, based on the total weight of the cosmetic composition.

16. The ultraviolet-blocking cosmetic composition according to claim 1,

the ultraviolet-blocking cosmetic composition is of a water-in-oil type.

Technical Field

In the present specification, disclosed is a uv-blocking cosmetic composition comprising an oil, an emulsifier, an inorganic-based uv-blocking agent, and an aqueous phase portion, the emulsifier comprising a polyglyceryl emulsifier and a sorbitan-based emulsifier.

Background

Recently, in various industrial fields such as food and sanitary products, concerns about safety of chemical substances have increased, and many attempts have been made to eliminate ingredients which pose dangerous concerns about skin and human health in cosmetics.

In particular, in the case of an ultraviolet blocking agent for adult consumers, infants, and children having sensitive skin, there are many water-in-oil type ultraviolet blocking cosmetics developed which contain only an inorganic ultraviolet blocking agent in consideration of skin irritation of the organic ultraviolet blocking agent, and in order to ensure improved dispersibility and emulsion stability of the inorganic ultraviolet blocking component, a polyethylene glycol (PEG) -based emulsifier (PEG-based emulsifier) having excellent emulsifying power and dispersibility is often used.

However, although products in which the PEG-based emulsifier is excluded have been developed with the problem of stability, they have disadvantages that they have negative feeling of use such as dry and thick spreadability and white turbidity, the molding stability is remarkably lowered, and oils and waxes for thickening purposes included for ensuring the molding stability are precipitated.

Therefore, there is a need for a cosmetic composition which has improved feeling in use and formulation stability compared to the prior art while excluding PEG-based emulsifiers.

Disclosure of Invention

In one aspect, the present invention aims to provide a cosmetic composition comprising a polyglyceryl emulsifier and a sorbitan-based emulsifier, which is excellent in feeling of use and also excellent in formulation stability even when the composition does not contain a PEG-based emulsifier.

In other aspects, the present invention aims to provide a cosmetic composition containing an inorganic ultraviolet blocking agent, which has an excellent ultraviolet blocking effect while not irritating the skin.

In one aspect, the present invention provides a uv-blocking cosmetic composition comprising an oil, an emulsifier, an inorganic-based uv-blocking agent, and an aqueous phase portion, the emulsifier comprising a polyglyceryl emulsifier and a sorbitan-based emulsifier.

In one aspect, the ultraviolet-blocking cosmetic composition of the present invention comprises a polyglyceryl emulsifier and a sorbitan-based emulsifier, and thus is excellent in feeling of use and also excellent in formulation stability even if it does not contain a PEG-based emulsifier. In addition, since the ultraviolet blocking agent contains an inorganic ultraviolet blocking agent, the ultraviolet blocking agent is not irritating to the skin and has an excellent ultraviolet blocking effect.

Drawings

Fig. 1a and 1b are photographs showing the precipitation stability of the cosmetic compositions of example 1 and comparative example 1 of the present invention.

Fig. 2a and 2b are photographs showing the formulation stability of the cosmetic compositions of example 1 and comparative example 6 of the present invention.

Detailed Description

Definition of terms

In the present specification, when a component is referred to as being "included" in a certain portion, it is not intended to exclude other components and may include other components unless specifically stated to the contrary.

Description of illustrative embodiments

The present invention will be described in detail below.

In an exemplary embodiment of the present invention, the present invention is a uv-blocking cosmetic composition comprising an oil, an emulsifier, an inorganic-based uv-blocking agent, and an aqueous phase portion, the emulsifier comprising a polyglyceryl emulsifier and a sorbitan-based emulsifier.

Unlike inorganic ultraviolet blockers, which generally prevent ultraviolet rays from penetrating into the skin by physically scattering or reflecting them, organic ultraviolet blockers prevent ultraviolet rays from penetrating into the skin by chemical absorption.

Therefore, the cosmetic composition of the present invention comprises an inorganic-based uv-blocking agent instead of an organic uv-blocking agent which may show irritation or toxicity to the skin due to chemical action, thereby enabling safe use of the skin of an infant who is not resistant to irritation or sensitive skin, and the skin after dermatology.

However, in the case of containing the inorganic-based ultraviolet ray blocking agent, there is a problem of dry and thick feeling in use or stability of molding such as deposition of oil or wax during production, and in order to solve this problem, a PEG-based emulsifier is mainly used, but there is a fear that a component such as 1, 4-dioxane generated as a by-product during synthesis is not completely removed in view of safety of the PEG-based emulsifier.

Accordingly, the present inventors have invented an ultraviolet-blocking cosmetic composition which contains an inorganic ultraviolet-blocking agent that is not irritating to the skin, and which contains a polyglyceryl emulsifier and a sorbitan emulsifier together without using a conventionally used PEG-based emulsifier, thereby having excellent formulation stability and an excellent ultraviolet-blocking effect.

In one embodiment, the polyglyceryl emulsifier may comprise one or more selected from the group consisting of polyglyceryl-2 dipolyhydroxystearate, lauryl polyglyceryl-3 dimethiconoethyl dimethicone, diisostearoyl polyglyceryl-3 dimerized linoleate, polyglyceryl-4 diisostearate/polyhydroxystearate/sebacate, polyglyceryl-2 triisostearate, polyglyceryl-3 diisostearate, polyglyceryl-2 diisostearate, and polyglyceryl-3 dimethiconoethyl dimethicone.

The sorbitan-based emulsifier may include one or more selected from the group consisting of sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan tristearate, sorbitan monooleate, sorbitan sesquioleate, and sorbitan isostearate.

In particular, since the sorbitan-based emulsifier has a linear structure, contrary to the large volume of the structure of the polyglyceryl emulsifier, when the cosmetic composition contains one or more polyglyceryl emulsifiers having different structures from each other and one or more sorbitan-based emulsifiers having a linear structure, the cosmetic composition can be prepared which has excellent stability in forming and also has excellent dispersibility at high temperatures.

In one embodiment, the integral emulsifier may be present in an amount of 1 to 20 wt%, for example, 2 to 19 wt%, 3 to 18 wt%, 4 to 17 wt%, 5 to 16 wt%, 6 to 15 wt%, 7 to 14 wt%, or 8 to 13 wt%, based on the total weight of the cosmetic composition. If the content of the emulsifier is less than 1% by weight, it is difficult to ensure stability of the molded product such as deposition of wax and water separation with the lapse of time after the preparation of the cosmetic composition, and if the content exceeds 20% by weight, the feeling of use as the cosmetic composition deteriorates and application to the product may be difficult.

In one embodiment, the oil may include one or more selected from the group consisting of C12-15 alkyl benzoate, coco-caprylate/caprate, dioctyl ether, coco glycerides, methyl trimethicone, butylene glycol dicaprylate/dicaprate, and caprylic/capric triglyceride, and may be contained in an amount of 10 to 40% by weight, for example, 11 to 35%, 12 to 30%, or 13 to 25% by weight, based on the total weight of the cosmetic composition. When the oil content is less than 10% by weight, a dry and thick feeling of use may be exhibited, and when it exceeds 40% by weight, greasiness may be exhibited when the skin is applied.

In one embodiment, the inorganic-based uv-blocking agent may be one or more selected from the group consisting of titanium dioxide, zinc oxide, and iron oxide, and may be contained in an amount of 10 to 40% by weight, for example, 11 to 35%, 12 to 30%, or 13 to 25% by weight, based on the total weight of the cosmetic composition. In the case where the content of the inorganic-based ultraviolet blocking agent is less than 10% by weight, the ultraviolet blocking effect may be very small, and in the case where it exceeds 40% by weight, the feeling of use and the molding safety may be lowered.

In one embodiment, the aqueous phase part may include one or more selected from the group consisting of water, hydrogen chloride, butylene glycol, ethylhexylglycerin, and glyceryl caprylate, and the aqueous phase part may be contained in an amount of 20 to 50% by weight, for example, 23 to 47% by weight, 26 to 44% by weight, or 30 to 40% by weight, based on the total weight of the cosmetic composition. In the case where the content of the aqueous phase part is less than 20% by weight, a feeling of use due to greasiness and sliminess of the oil may be felt, and dispersibility may be reduced, and in the case where it exceeds 50% by weight, separation of the oil phase part and the aqueous phase part may occur.

In one embodiment, the cosmetic composition may further comprise one or more of a powder, a wax, and an inorganic thickener.

In one embodiment, the powder is used for the use feeling of the ultraviolet ray blocking cosmetic composition, and may be one or more selected from the group consisting of silicon dioxide, vinyl dimethicone/methicone silsesquioxane cross-linked polymer, polymethylsilsesquioxane, and polymethylmethacrylate. The powder may be contained in an amount of 1 to 10% by weight, for example, 1.5 to 9%, 2 to 8%, 2.5 to 7% or 3 to 6.5% by weight, based on the total weight of the cosmetic composition. The powder can make the cosmetic composition soft in use and prevent precipitation phenomenon in molding.

In one embodiment, the wax may be at least one selected from hydrogenated vegetable oil, and tristearin, and may be contained in an amount of 0.5 to 5% by weight, for example, 1 to 4.5% by weight, 1.5 to 4% by weight, or 2 to 3.5% by weight, based on the total weight of the cosmetic composition. The wax can soften the use feeling within the content and prevent the precipitation phenomenon in the molding.

In one embodiment, the inorganic thickener may be a hectorite-based inorganic thickener, preferably may be disteardimonium hectorite, present in an amount of 0.5 to 5 wt.%, for example, 1 to 4.5 wt.%, 1.5 to 4 wt.%, or 2 to 3.5 wt.%, based on the total weight of the cosmetic composition. The inorganic thickener can prevent wax precipitation in the above content and does not impair the feeling in use.

In one embodiment, the ultraviolet blocking cosmetic composition may be of a water-in-oil type. Therefore, the water phase component in the ultraviolet-blocking cosmetic composition does not evaporate and has good affinity with the skin.

In yet another exemplary embodiment of the present invention, the present invention is a method of blocking ultraviolet light by administering or applying to the skin in an effective amount a cosmetic composition comprising an oil, an emulsifier comprising a polyglyceryl emulsifier and a sorbitan-based emulsifier, an inorganic-based ultraviolet light blocking agent, and an aqueous phase portion to a subject in need thereof.

In yet another exemplary embodiment of the present invention, the present invention is a uv blocking use of a composition comprising an oil, an emulsifier, an inorganic-based uv blocking agent, and an aqueous phase portion, the emulsifier comprising a polyglyceryl emulsifier and a sorbitan-based emulsifier.

In yet another exemplary embodiment of the present invention, the present invention is a use of a composition for preparing a uv-blocking cosmetic, the composition comprising an oil, an emulsifier, an inorganic-based uv-blocking agent, and an aqueous phase part, the emulsifier comprising a polyglyceryl emulsifier and a sorbitan-based emulsifier.

Hereinafter, the present invention will be described more specifically by the following examples. However, the following examples are provided for illustrative purposes only to aid understanding of the present invention, and the scope and scope of the present invention are not limited thereto.