KR100609847B1 - Compositions of castor oil free lipstick - Google Patents

Abstract

The present invention relates to a caster oil-free lipstick composition having excellent color expressiveness and usability and minimizing changes in color over time such as odor, discoloration, and sweating, and is hydrogenated castor oil isostearate, isostearyl neopenta. By containing noate (Isostearyl Neopentanoate), polyethylene or polyethylene derivatives, it has excellent dispersibility and dispersion stability of pigments, shows soft and light usability, and minimizes changes over time such as discoloration, discoloration and sweating, thereby improving product quality and reliability. Will be.

Description

Compositions of castor oil free lipstick

The present invention relates to a lipstick composition.

In general, the lipstick is a cosmetic for the lip that is used for the purpose of protecting the lips and at the same time by giving a color effect to the lips, look specifically at this as follows.

The lipstick is composed of waxes and oils, which are oily ingredients that give a softness, gloss, and feel to the lips, and various additives such as pigments, antioxidants, preservatives, and fragrances that express various colors. Same as

The wax is a solid component that maintains the appearance of the lipstick by increasing the hardness, and candelillan, ceresin, carnauba wax, paraffin, wax, braze, beeswax, microcrystalline lead and the like provide gloss to the surface of the lipstick.

In addition, the pigment component is to determine the color of the lipstick, largely divided into organic pigments and inorganic pigments. In the case of organic pigments, there are many things that have solubility in general and these dyes are rarely used in lipsticks because they may be stained on the lips, but since the colors of the organic pigments are various and bright, the dyes are made of insoluble lakes. Etc. are used. In addition, inorganic pigments such as iron oxide are being used, depending on the type and content of these pigments brings a lot of physical properties to the lipstick.

In addition, the oil occupies the largest proportion of the lipstick composition, castor oil, jojoba oil, squalane, lanolin, lanolin derivatives, oils extracted from animals and plants, synthetic ester oils, silicone oils such as liquid oil components are used pigments Dispersing the ingredients, affecting the adhesion and spreading of the lipstick, and acts as a factor that greatly affects the dispersibility and usability of the pigment according to the selection and content of the oily ingredients.

Lipstick configured as described above should be excellent in expressing color, easy to apply and have soft usability and protection function of lips. In addition, even when ingested in the lips, skin or body, there should be no bleeding or clumping of the lips and there should be no change over time such as discoloration, discoloration and sweating.

However, when the content of the wax in the constituents is high, the hardness of the lipstick is high and hard, and the feeling of use becomes heavy, and the applicability is reduced. When the content of the wax is low, the applicability is good, but the high temperature stability is poor and easily crushed. In addition, the amount of smearing of the lipstick increases, the lips become dirty and smearing occurs along the lines of the lips.

In addition, lanolin, an oil component, is commonly used in lipsticks because of its excellent moisturizing and adhesion properties, but lanolin itself is easily oxidized, which may cause discoloration and discoloration, burden on the lips, and recently, allergy to lanolin has been reported. There is a bar.

In addition, the castor oil of the oil component is very excellent in the dispersibility to the pigment and excellent protective effect on the lips was used as a composition that was essential for the lipstick from 5.0 to 60.0% by weight. However, the main constituent of castor oil is ricinoleic acid, which has a double bond in its molecular structure, which is easily oxidized by heat or radicals in the atmosphere, causing the double bond to break, resulting in deformation and discoloration. Come.

In addition to the above-mentioned problems such as usability, applicability, odor and discoloration, the most representative instability factor of the lipstick known so far includes sweating that oil spreads to the surface of the lipstick, which will be described in detail as follows.

The sweating is caused by the absorption of moisture in the atmosphere to the minute cracks and hydrophilic pigments generated in the composition due to the difference in the expansion rate of each component during the process of shrinking, expanding movement of the lipstick composed of a mixture of wax and oil This is a phenomenon in which the oil phase of the inside emerges to the outside along the minute cracks generated by the difference in the volume expansion ratio of. As a result of analyzing the components of sweating, it was found that castor oil acts as a major factor of sweating.

Therefore, in order to solve the above problems, studies on substrates that can replace castor oil have been made, and polyglyceryl-2 triisostearate, diisostearyl maleate, diglycerin / sebacin acid Raw materials, such as oligoesters of isopalmitinic acid and 2-ethylnuclear oxystearate, are currently being considered as alternatives to castor oil and are being used in part.

However, in the case of polyglyceryl-2 triisostearate, the dispersibility of the pigment is excellent and the usability is light but sticky, and sweating occurs a lot compared to the use of conventional castor oil.

In addition, diisostearyl maleate has a very good dispersibility to the pigment but severe stickiness and heavy usability, oligoester of diglycerin / sebacic acid / isopalmitinic acid has a dispersibility, coating and appearance gloss for the pigment It greatly degrades and weakens the melting point and hardness, which weakens the high temperature stability of the lipstick.

In addition, 2-ethylnuclear oxystearate is very excellent in dispersibility to the pigment, but the coating and appearance gloss is greatly reduced, weakening the high temperature stability of the lipstick by weakening the melting point and hardness.

In addition, 12-hydroxystearic acid hydrogenated double bond of conventional castor oil has good stability against oxidation, but has a significantly higher melting point, making it difficult to exhibit hydroxyfatty acid at room temperature. Are unable to solve all of the problems described above.

The present invention is to solve the above problems, to provide a caster oil-free lipstick composition that is excellent in color expression power, usability, and minimizes the change over time, such as odor, discoloration and sweating.

In order to achieve the above object, the caster oil-free lipstick composition of the present invention contains a hydrogenated castor oil isostearate and isostearyl neopentanoate, a polyethylene or polyethylene derivative by containing The hydroxy group in the structure increases the dispersibility to the pigment, hydrogenated unsaturated fatty acids to saturated fatty acids to increase oxidative stability to eliminate odor and discoloration, and gelling oils using polyethylene or polyethylene derivatives to minimize sweating.

Hereinafter, the present invention will be described in detail.

The present invention relates to a caster oil-free lipstick composition containing hydrogenated castor oil isostearate and isostearyl neopentanoate, polyethylene or a polyethylene derivative. Same as

The hydrogenated castor oil isostearate is a glyceride containing a hydroxy fatty acid group obtained by esterifying some or all of the hydroxy group of hardened castor oil obtained by adding hydrogen to castor oil with other fatty acids. Melting point is 43-55 degreeC, saponification value is 175-195.

The hydroxy fatty acid is a fatty acid having a hydroxy group, which is found in the main components of castor oil, such as ricinoleic acid, lanolin, and other animal and lipids, and has a hydrophilic group. When blended, it is easy to exhibit various characteristics, and in particular, provides a moist and soft texture.

In addition, isostearyl neopentanoate is a transparent liquid oil in which isostearyl alcohol and neopentanophosphate are ester-bonded with a refractive index of 1.4467-1.4497 and a specific gravity of 0.853-0.870. The isostearyl neopentanoate is colorless, odorless, and tasteless, and has excellent stability in heat, air, and dispersibility for pigments, and provides light and soft usability.

The hydrogenated castor oil isostearate and isostearyl neopentanoate are mixed in a ratio of 10: 1 to 1:10 to the total weight of the lipstick composition to facilitate the use of the pigment as a dispersing substrate and to improve the feeling. It is used in combination with 1.0-70.0% by weight. While the hydrogenated castor oil isostearate has excellent dispersibility and stability, it is present as a paste at room temperature and is difficult to be easily used as a dispersing substrate of the pigment. Stearyl neopentanoate is mixed in a proportion to facilitate the use as a dispersing substrate of the pigment and to improve the feeling of heavy and sticky.

In addition, the polyethylene or polyethylene derivative is used to suppress sweating, and one or two or more of polyethylene, polyethylene / polydesine / isohexadecane copolymer, rosin acrylate, acrylate / dimethicone copolymer, and the like. Used in combination at 0.1-20.0% by weight relative to the total weight of the lipstick composition.

The polyethylene or the polyethylene derivative of the present invention has excellent gelling ability to gel oils having a lot of fluidity in the lipstick to suppress the fluidity of the oil. Accordingly, sweat is a phenomenon in which the oil is pushed out due to the difference in the expansion ratio of the wax and the oil according to the temperature change. Can be greatly reduced. In addition, it is excellent in high temperature stability and can reduce the content of wax, so the usability is light and soft and minimizes line bleeding.

The present invention configured as described above has a molecular structure having a hydroxyl group of hydrogenated castor oil isostearate, and has a hydroxyl group and a pigment having a polarity as compared to other substrates currently being studied. It has high affinity and excellent pigment dispersion. In addition, the hydrophilic group in the hydrogenated castor oil isostearate molecule exhibits excellent catching power, resulting in excellent moisturizing and lip protective effects.

In addition, the soft and silky feeling of isostearyl neopentanoate has light and smooth usability without stickiness. In addition, since there is no double bond in the molecular structure, it has excellent oxidative stability compared to any conventional substrate, does not cause any odor, discoloration, sweating, etc., and has excellent gloss of coating and appearance. It will have a gloss.

The following is described in more detail with reference to the following embodiments of the present invention configured as described above. However, these examples are intended to illustrate the present invention, it is obvious to those skilled in the art that the scope of the present invention is not limited to these examples. Compounding amount is shown by weight%.

Example Lipstick Preparation

Raw material name Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Example 1 Example 2 Paraffin lead 5.0 5.0 5.0 5.0 2.0 5.0 2. Candelilla Nap 10.0 10.0 10.0 10.0 10.0 10.0 3. ceresin 5.0 5.0 5.0 5.0 5.0 5.0 4. Octyldodecanol 15.0 15.0 15.0 15.0 15.0 15.0 5. Trioctanoin 20.0 20.0 20.0 20.0 20.0 20.0 6. Squalane 10.0 10.0 10.0 10.0 10.0 10.0 7. Castor Oil 25.0 - - - - - 8. Polyglyceryl-2-triisostearate - 25 - - - - 9. Diisostearyl maleate - - 25 - - - 10. 2-ethylhexyloxystearate - - - 25 - - 11. Hydrogenated Castor Oil Isostearate - - - - 12.5 12.5 12. Isostearyl Neopentanoate - - - - 12.5 12.5 13. Polyethylene or Polyethylene Derivatives - - - - - 3.0 14. Pigment 10.0 10.0 10.0 10.0 10.0 10.0 15. Preservative q.s q.s q.s q.s q.s q.s 16. Incense q.s q.s q.s q.s q.s q.s

Manufacturing method:

1) After weighing the raw materials 1-6 and mixing and melting uniformly at 85 ° C., the mixed raw materials 7-14 are added and uniformly dispersed and defoamed.

2) The above 1) is cooled to 75 ° C., and the raw materials 15 and 16 are added and dispersed for a predetermined time, and then shaped into a lipstick.

Test Example: Measurement of Dispersibility and Dispersion Stability of Pigment

In order to evaluate pigment dispersibility and dispersion stability of the lipstick composition of the present invention and the conventional lipstick composition, castor oil, which is an existing lipstick composition as described in Table 1, and a substitute thereof are used as comparative examples, and hydrogenated castor oil of the present invention. Lipstick composition containing isostearate, isostearyl neopentanoate, polyethylene or polyethylene derivative is added as an example and dispersed for 20 minutes by adding a certain amount of pigment to measure absorbance using a UV-Visible Spectrometer. The higher the absorbance value, the better the dispersibility of the pigment. When the particles are evenly distributed with less aggregation of the particles, the surface area of the particles is increased to absorb a lot of light, thereby increasing the absorbance, thereby improving the dispersibility of the pigment. Therefore, the degree of dispersion was evaluated as absorbance, and the dispersion stability of the pigment was examined as a change in the numerical value with time (1 day, 1 week, 1 month), and the results are shown in Table 2 below.

Measuring time Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Example 1 Example 2 Immediately after dispersion 0.685 0.693 0.805 0.833 0.915 0.918 1 day later 0.645 0.631 0.781 0.810 0.910 0.913 In a week 0.588 0.596 0.732 0.793 0.907 0.910 1 month later 0.578 0.589 0.657 0.754 0.898 0.905

As shown in Table 2, the absorbance is higher in the composition of the embodiment than the composition of the comparative example, it can be seen that the dispersibility of the pigment in the composition of the present invention is more excellent, and the degree of change in numerical value with the change of time is smaller It can be seen that the dispersion stability of the pigment is more excellent.

Test Example: Stability Measurement

In order to measure the stability against discoloration, discoloration and sweating for the comparative examples and examples, the degree of discoloration and discoloration was measured under the conditions of 50 ° C. where discoloration and discoloration occurred most easily, and cyclic sweating occurred most easily. In the incubator, -4 ℃ to 40 ℃ was changed twice a day to record the day of discoloration, odor and sweating for 60 days for the Comparative Example and Example products, respectively, and the results are shown in Table 3 below. In practice, the stability of the house conditions can be predicted for three to five years.

Measuring conditions Item Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Example 1 Example 2 50 ℃ discoloration 20 days none none none none none Deodorant 12 days none 52 days 47 days none none cyclic incubator perspiration 1 day 5 days 21st 17 days 56 days none

As shown in Table 3, it can be seen that the Example product of the present invention has high stability against discoloration and odor, and particularly hydrogenated castor oil isostearate and isostaryl neopentanoate, polyethylene or polyethylene derivatives. It can be seen that Example 2 containing was not only discolored and deodorized but also highly stable against sweating.

Test Example: Appearance Gloss Measurement

In order to compare the appearance gloss between the Example product and the Comparative Example product of the present invention, the Examples and Comparative Examples prepared under the same conditions were compared with the appearance gloss immediately after molding and after 1 day, 1 week, and 1 month. Is shown in Table 4.

Measuring time Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Example 1 Example 2 Immediately after molding 7.0 6.0 7.5 5.0 9.0 9.0 1 day later 6.5 5.5 7.0 4.5 8.5 8.5 In a week 5.5 4.5 5.5 3.5 8.0 8.0 1 month later 5.0 4.0 5.0 3.0 8.0 8.0

Legend: 10 (Excellent) → 5 (Normal) → 1 (None)

As shown in Table 4, it can be seen that the appearance gloss of the Example product is superior to the Comparative Example product, and also the degree of change of the gloss over time is small and also excellent in the sustaining effect of the gloss.

Test Example: Comparison of Use

In order to compare the effect of the use of the Examples and Comparative Examples, 300 females in their 20s and 30s were used for 2 months for 3 months to improve lip roughness, usability of the lips, and irritation of the lips. The lips of before and after use were closely observed and compared and evaluated. The results are shown in Table 5.

Evaluation item Evaluation standard Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Example 1 Example 2 Lip Roughness Improvement Prize 124 156 186 108 204 221 medium 122 127 98 149 88 73 Ha 56 17 16 43 8 6 Usability of the lips Prize 75 198 125 164 235 256 medium 167 65 134 96 60 42 Ha 58 37 41 40 5 2 Lip skin irritation 27 5 3 10 0 0

As shown in Table 5, it can be seen that the product of the embodiment of the present invention is excellent in terms of lip roughness improvement, usability of the lips, and lip skin irritation.

As described above, the caster oil-free lipstick of the present invention contains hydrogenated castor oil isostearate, isostearyl neopentanoate, polyethylene or a polyethylene derivative, and thus exhibits a soft and light usability with excellent dispersibility and dispersion stability of the pigment. In addition, by minimizing changes over time, such as odor, discoloration and sweating, it is effective to improve the quality and reliability of the product.

Claims (5)

In the lipstick composition, A caster oil free lipstick composition comprising hydrogenated castor oil isostearate and isostearyl neopentanoate, polyethylene or polyethylene derivatives. The method of claim 1, Hydrogenated castor oil isostearate is a caster oil-free lipstick composition characterized by esterification of some or all of the hydroxy group of hydrogenated hydrogenated castor oil with fatty acids, with a melting point of 43-55 ° C. and a saponification value of 175-195. The method of claim 1, Isostearyl neopentanoate is a transparent liquid oil in which isostearyl alcohol and neopentanophosphate are ester-bonded, and has a refractive index of 1.4467-1.4497 and a specific gravity of 0.853-0.870. The method of claim 1, Hydrogenated castor oil isostearate and isostearyl neopentanoate are mixed at a ratio of 10: 1 to 1:10 to caster oil free, characterized in that blended at 1.0-70.0% by weight relative to the total weight of the lipstick composition. Lipstick composition. The method of claim 1, Polyethylene or polyethylene derivative is 0.1-20% by weight of polyethylene, polyethylene / polydesine / isohexadecane copolymer, rosin acrylate, acrylate / dimethicone copolymer, or a mixture of two or more thereof. Caster oil free lipstick composition.