CN116831949A - A composition and a lip product containing the composition - Google Patents

Abstract

The invention provides a composition and a lip product containing the composition. The composition comprises a soft wax, a hard wax, and film forming agents A and B, wherein the film forming agent A is a mixture of a copolymer of vinyl pyrrolidone and olefin and octyl dodecanol, and the film forming agent B is another copolymer of vinyl pyrrolidone and olefin. Lip products containing the composition have excellent migration resistance, water repellency, skin adhesion, and no-cup adhesion.

Description

A composition and a lip product containing the composition

Technical field

The present invention relates to the technical field of cosmetics, and specifically to a composition and a lip product containing the composition.

Background technique

Lip cosmetics are common cosmetics and are generally divided into two types: colored products and colorless products. Colorless products mainly moisturize and fix the color of the lips, while colored products play a role in coloring, brightening and modifying the lips. Lip shape and other lip beauty effects. Because the skin on the lipstick area has a thin cuticle, no hair, and no sebaceous glands, it is thinner and more fragile than the facial skin on other parts of the face. When the external climate environment or the body's own moisture is insufficient, it is prone to dryness, peeling, and dryness. A series of lip problems such as aging are often aggravated by the use of lip cosmetics. In addition, there are common problems with colored lip cosmetics such as cup staining, makeup removal or fabric contamination. Coupled with the impact of masks during the contemporary epidemic, consumers have also put forward higher requirements for the long-lasting and color-locking properties of colored lip cosmetics. .

Film-forming agents are common components in lip cosmetics. They can improve the waterproofness, wipe resistance and migration resistance of the product, prevent makeup from coming off, and also make the product easier to apply makeup and have a glossy feel. For example, it can Use olefin oily film-forming agents (see CN109528515B), hydrogenated polycyclopentadiene, polyethylene, carnauba wax and vitamin mixture film-forming agents (see CN109223619B), etc., but the existing technology mostly uses a single film-forming agent or a film-forming agent. The film composition achieves a color-locking and color-fixing effect, and the film-forming agent is a sealing moisturizer and cannot provide a nourishing effect.

In addition, patent application CN110678165A has disclosed a wax-free water-in-oil emulsion for skin or lip care or makeup, which emulsion is prepared from a mixture of glutamic acid amides or aspartic acid amides and hydrocarbon polymers. into solid or paste. The mixture can be dissolved in at least one non-volatile oil, wherein the hydrocarbon polymer can be an alkylvinyl (co)polymer, such as VP/hexadecene copolymer, VP/eicosene copolymer, trisene Decyl PVP, C10-C30 alkyl acrylate, etc., non-volatile oil can be ester or alcohol oil, such as octyl lauryl alcohol, dimer ester of dilinoleic acid, etc. However, one of the technical effects of this patent application is that through the use of this water-in-oil emulsion, cosmetics can be free of wax substances. The patent application CN112315853A uses VP/hexadecene copolymer as one of the film-forming agents of lipstick products, but its function is to copolymerize with another film-forming agent ethylene/propylene/styrene copolymer & butene/ethylene/styrene The product, together with other oil absorbers, viscosity control agents and other components, gives the product a mirror effect. Patent applications CN114748368A, CN112315853A, CN113143786A, etc. also disclose the use of VP/eicosene copolymer, VP/hexadecene copolymer, octyldodecanol, triacontyl PVP, etc. as additives in lipstick products. Thickeners, emulsifiers/solvents or emollients.

However, lip cosmetics that currently use film-forming agents or film-forming compositions to achieve the color-fixing effect of cosmetic products are still not ideal in terms of waterproofing, color locking, and moisturizing.

Contents of the invention

In order to solve the above problems, in a first aspect, the object of the present invention is to provide a composition comprising soft wax, hard wax, film-forming agents A and B, wherein the film-forming agent A is a A mixture of a copolymer of vinylpyrrolidone and an olefin with octyldodecanol, film former B is another copolymer of vinylpyrrolidone and an olefin.

In a specific embodiment, the mass ratio of the soft wax: the hard wax: the film-forming agent A and the film-forming agent B in the composition of the present invention can be (1-5): (8- 12):(1-5):(0.5-2).

In a preferred embodiment, the mass ratio of the soft wax: the hard wax: the film-forming agent A and the film-forming agent B in the composition of the present invention can be (1-3): (8- 12):(1-3):(0.5-2). In a more preferred embodiment, the mass ratio of the soft wax: the hard wax: the film-forming agent A and the film-forming agent B in the composition of the present invention can be 1: (8-12): 1:(0.5-2).

In a preferred embodiment, the mass ratio of the soft wax: the hard wax: the film-forming agent A and the film-forming agent B in the composition of the present invention may be 1:12:1:0.5.

In a specific embodiment, the mass ratio of a copolymer of vinylpyrrolidone and an olefin to octyldodecanol in the film-forming agent A in the composition of the present invention may be 5:1-1:1. In a preferred embodiment, the mass ratio of a copolymer of vinylpyrrolidone and an olefin to octyldodecanol in the film-forming agent A in the composition of the present invention may be 3:1.

In specific embodiments, the soft wax in the compositions of the present invention may be beeswax. In a preferred embodiment, the soft wax in the composition of the present invention may be white beeswax.

In specific embodiments, the hard wax in the compositions of the present invention may be a synthetic wax.

In a specific embodiment, the copolymer of vinylpyrrolidone and olefin in the composition of the present invention can be a VP/C ₁₆ -C ₂₀ carbonene copolymer, for example, it can be a VP/hexadecene copolymer. Or VP/eicosene copolymer.

In specific embodiments, the copolymer of another vinylpyrrolidone and an olefin in the composition of the present invention may contain from 24 to 30 carbon atoms. In a preferred embodiment, the other copolymer of vinylpyrrolidone and olefin in the composition of the present invention may be triacontyl PVP.

In a more specific embodiment, the composition of the invention may comprise white beeswax, synthetic wax, a mixture of VP/hexadecene copolymer with octyldodecanol (film former A) and triacontyl PVP (Film-forming agent B).

In a second aspect, the present invention aims to provide a lip product containing a composition according to the first aspect.

In specific embodiments, the lip products of the present invention may also contain emollients and fillers. In a more specific embodiment, the emollient may be isononyl isonononate and/or squalane. In another more specific embodiment, the filler may be one or more of silica, polymethylsilsesquioxane, and mica.

In specific embodiments, the lip products of the present invention may be colorless lip products or tinted lip products. In a more specific embodiment, the tinted lip product contains colorants, such as CI 77491, CI 15850, CI77499, CI 77891, CI 77492, etc., preferably one or more of the colorants is triethyl Oxyoctylsilane treated colorants.

In specific embodiments, the lip products of the present invention may also include one or more of a preservative, a binder, a thickener, and an emulsifier.

In specific embodiments, lip products of the present invention may contain isononyl isononanoate, squalane, silica, methylsilsesquioxane, mica, hydrogenated polyisobutylene, phenoxyethanol, and ethylhexyl glycerin. When the lip product is a colored lip product, the lip product further includes a colorant.

Beneficial effects:

Compared with the prior art, the composition of the present invention and the lip products using the same have the following advantages:

(1) The various oils and wax raw materials contained in the composition of the present invention can have synergistic effects. When used as film-forming agents, the product can achieve skin brightening and locking while having moisturizing, color-fixing and maintenance functions. It has the beauty effect of color, so it is especially suitable for the skin of lips and other parts with thin stratum corneum, no hair, and no sebaceous glands. Lip products containing the composition can have the nourishing effect of colorless lip products and colored lip products. The cosmetic effect of the product.

(2) Lip products containing the composition of the present invention have significantly improved waterproofness, migration resistance, skin fit and non-stick properties.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Embodiments.

Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without any creative work fall within the scope of protection of the present invention.

The technical solution of the present invention will be further described below through specific implementations.

Example 1: Preparation of a lip product of the present invention

Preparation of compositions of the invention

1) Weigh the white beeswax, synthetic wax, film-forming agent A, and film-forming agent B according to the mass ratio of 1:8:1:0.5;

2) Mix and stir the weighed wax raw materials at 85-95°C until completely melted;

3) Add film-forming agent A and film-forming agent B in sequence, and stir at 95°C until the material is evenly dispersed and completely melted to prepare the composition of the present invention.

Among them, film-forming agent A is compounded of VP/hexadecene copolymer and octyldodecanol with a mass ratio of 3:1; film-forming agent B is triacontyl PVP.

Preparation of lip products of the invention

1) Combine 2.8g mica powder, 2.4g silica, 18.5g polymethylsilsesquioxane, 3.4g hydrogenated polyisobutylene, 3.4g squalane, 40g isononyl isononanoate, 4.5gCI 77491, 0.65g trisulfide After mixing and evenly stirring CI 15850, 0.2g CI77499, 3.1g CI 77891 and 0.28g CI 77492 treated with ethoxyoctylsilane, grind them five times on a three-roller grinder to obtain a uniformly dispersed color paste, which is ready for use;

2) Heat 16.4g of the composition of the present invention prepared in advance, stir at a uniform speed and raise the temperature to 90-95°C;

3) Add the standby color paste prepared in step 1) to the composition of step 2), continue to stir evenly and cool to 60-70°C, add an appropriate amount of auxiliary ingredients to prepare a fluid;

4) Complete step 3) with filling, cooling and demoulding to obtain lipstick.

Example 2-10: Preparation of nine other lip products of the invention

The only difference between Examples 2-10 and Example 1 is that the mass ratio of white beeswax, synthetic wax, film-forming agent A and film-forming agent B in the composition of the present invention contained in the lipstick of this example is different. For specific proportions, please See Table 1 below.

Table 1: Formulations of the compositions of the present invention used in Examples 2-9

serial number White beeswax: Synthetic wax: Film former A: Film former B Example 2 1:10:3:1 Example 3 1:12:5:2 Example 4 3:8:3:2 Example 5 3:10:5:0.5 Example 6 3:12:1:1 Example 7 5:8:5:1 Example 8 5:10:1:2 Example 9 5:12:3:0.5 Example 10 1:12:1.0:0.5

In order to compare the performance of lip products using the composition of the present invention with lip products not using the composition of the present invention, Comparative Examples 1-7 were also conducted.

Comparative Examples 1-7: Preparation of 7 Comparative Lip Products

The preparation methods of the lip products in Comparative Examples 1-7 are basically the same as those in Example 10. Only the formula used is different. For specific differences, please see Table 2 below.

Table 2: Description of formulas used in Comparative Examples 1-7

Lip product performance testing

(1) Anti-migration test

Migration refers to the ability of colorants to migrate from the inside or surface of lipstick to the surface of adjacent products. The migration of colorants can easily cause makeup to come off, stain the cup, and even contaminate fabrics. To solve this problem, anti-migration can be used The performance determines the migration status of colorants in lipsticks, thereby improving the application performance of the product.

Anti-migration test method: First melt the lip products prepared in Examples 1-10 and Comparative Examples 1-7 at about 90°C, and then use a special film puller to draw the film on black cardboard. The thickness is 10um, let it stand for 24 hours, and let it dry naturally; after letting it stand for 24 hours at room temperature, use a Ci60 colorimeter to test the L (lightness), a (green to red value), b (blue to yellow value) of the film (same as For a formula sample, stretch 3 pieces of black cardboard. Randomly select 3 test points on each piece of cardboard, and note the location of the test points, a total of 9 points, and calculate the average value); cover it with A4 paper, and use a self-weight 2.5kg After the roller rolls back and forth on the cardboard 15 times, remove the upper layer of cardboard and measure the L, a, and b values of the same test point on the A4 paper and the black cardboard. By calculating △E color difference The anti-migration capabilities of different formulas were evaluated. The test results are as shown in Table 3 below.

Table 3: Anti-migration test results of lip products in Examples 1-10 and Comparative Examples 1-7

It can be seen that the color difference values of the lip products of Examples 1-10 of the present invention before and after migration on paper are small, while the lip products of Comparative Examples 1-7 have obvious color difference changes, indicating that the combination of the present invention is used Lip products with excellent resistance to color migration.

(2)Waterproof test

Test method: Apply the lip product sample evenly on the skin of 3×3cm on the inner side of the arm, use the seat drop method to test the contact angle of pure water on the lip product sample, and take the average after five parallel measurements; the test instrument is: DSA25 contact angle analyzer from KRUSS, Germany. The test results are as shown in Table 4 below.

Table 4: Water resistance test results of lip products in Examples 1-10 and Comparative Examples 1-7

The larger the static contact angle, the better the waterproof effect. The measured waterproof contact angles of the lip products of Examples 2, 4, 6, 8, 9, and 10 of the present invention are all greater than 90 degrees, while the waterproof contact angles of the lip products of Comparative Examples 1-7 vary greatly. And overall it is lower than the lip products of the embodiments of the present invention, indicating that the lip products using the composition of the present invention have better ability to resist moisture from water molecules.

(5) Skin adhesion and non-stick test

Skin adhesion test method: First, apply the lip product evenly on the hydrocolloid dressing, and then use the DSA25 contact angle analyzer to measure the two contact angles of water, diiodomethane and the lip product. Next, the analyzer software automatically determines the contact angle according to WORK The equation calculates the surface free energy σ ₁ , the dispersion part σ ₁ ^d , and the polar part σ ₁ ^p of the lip product, and then uses the reference data of the surface energy of the skin after oil removal from the German KRUSS company (surface free energy σ ₂ = 32.9mN/m, dispersion force σ ₂ ^d = 1.6mN/m, polar force σ ₂ ^p = 31.3mN/m), calculate the adhesion work Wa between the lip product and the skin. The greater the adhesion work Wa, the better the lip The more skin-friendly the product is.

Non-stick test method: Use DSA25 contact angle analyzer to measure the contact angle between water, diiodomethane and plastic cups and paper cups. The software will automatically calculate the surface free energy σ _2,s and dispersion force σ of the two cups. _2,s ^d , polar force σ _2,s ^p , next, the surface free energy σ ₁ , dispersion part σ ₁ ^d , and polar part σ ₁ ^p of the lip product measured in the above skin adhesion test , as well as the surface free energy, dispersion part, and polar part data of plastic cups and paper cups are imported into the WORK equation respectively, and the adhesion work W _b1 and W _b2 between the lip product and the two cups can be calculated. When the adhesion function W _b between the lip product and the cup is smaller, the lip product has better non-stick properties. In addition, when the adhesion work W _a between the lipstick and the skin > the adhesion work W _b between the lipstick and the cup, it means that the lipstick is not easily peeled off from the lip skin after application, and the difference between W _a and W _b ΔW ( The larger the ΔW=Wa-Wb), the longer the lipstick’s color locking ability.

The WORK equation is: adhesion work The test results are shown in Table 5 below.

Table 5: Test results of skin fit and non-stick properties of lip products in Examples 1-10 and Comparative Examples 1-7

It can be seen that the adhesion work _Wa of the lip products of Examples 2, 4, 6, 8, 9 and 10 is greater than the adhesion work W _b , while the opposite is true for the lip products of Comparative Examples 1-3. This is It shows that the lip products of Examples 2, 4, 6, 8, 9, and 10 are better than those of Comparative Examples 1-3 in terms of skin fit and non-stick cup performance, and have better ΔW due to larger ΔW. Long-lasting color locking ability.

In summary, the lipsticks prepared in Examples 2, 4, 6, 8, 9, and 10 have excellent anti-migration properties, waterproof properties, skin-fitting properties, and non-stick properties.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also There are various changes and modifications which fall within the scope of the claimed invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. A composition, characterized in that the composition contains soft wax, hard wax, film-forming agents A and B, wherein the film-forming agent A is a copolymer of vinylpyrrolidone and olefin with octyl A mixture of dodecanol, film former B is another copolymer of vinyl pyrrolidone and an olefin. 2. The composition according to claim 1, wherein the mass ratio of the soft wax: the hard wax: the film-forming agent A and the film-forming agent B is (1-5): (8-12):(1-5):(0.5-2); preferably the mass ratio is (1-3):(8-12):(1-3):(0.5-2); more preferably The mass ratio is 1:(8-12):1:(0.5-2); most preferably, the mass ratio of the soft wax: the hard wax: the film-forming agent A and the film-forming agent B is 1:12:1:0.5. 3. The composition according to claim 1 or 2, wherein the mass ratio of a copolymer of vinylpyrrolidone and olefin in the film-forming agent A to octyldodecanol is 5:1- 1:1, preferably 3:1. 4. The composition according to claim 1 or 2, wherein the soft wax is beeswax, preferably white beeswax; the hard wax is synthetic wax. 5. The composition of claim 1 or 2, wherein the copolymer of vinylpyrrolidone and olefin is a VP/C ₁₆ -C ₂₀ carbonene copolymer, preferably VP/dec Hexacene copolymer and/or VP/eicosene copolymer. 6. The composition of claim 1 or 2, wherein the further copolymer of vinylpyrrolidone and an olefin contains 24 to 30 carbon atoms, preferably triacontyl PVP . 7. A lip product, characterized in that the product contains the composition according to any one of claims 1-6. 8. A product as claimed in claim 7, further comprising emollients and fillers and, optionally, colorants. 9. The product of claim 7 or 8, further comprising one or more of a preservative, a binder, a thickener and an emulsifier. 10. Use the product according to claim 7 or 8, characterized in that the product contains isononyl isononanoate, squalane, silica, polymethylsilsesquioxane, mica, hydrogenated polyisobutylene, Phenoxyethanol and ethylhexylglycerin.