JPS63287712A - Liquid cosmetic - Google Patents

Abstract

PURPOSE:To obtain a stable eye makeup cosmetic, capable of providing excellent described lines and excellent coating performance, use characteristics and moderate viscosity, by containing a phospholipid, nonionic surfactant and high- boiling oily substance in an aqueous dispersion containing an inorganic pigment. CONSTITUTION:An eye makeup liquid cosmetic, obtained by adding (A) 0.5-50% phospholipid selected from soybean phospholipid, egg yolk phospholipid and hydrogenated substances thereof, (B) 0.25-6.0% nonionic surfactant (e.g. polyglycerol ester or a fatty acid) and (C) a high-boiling oil substance (e.g., castor oil) in an amount to satisfy the formula (X is the amount [g] of the blended high-boiling oily substance; A is the total surface area [m<2>] of pigment particles; D is the density [g/cm<3>] of the high-boiling oil substance), having 3-300cps viscosity at 25 deg.C and suitable as a pen-type makeup tool.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a novel liquid eye makeup composition. More specifically, the present invention is particularly suitable for pen type makeup applications, provides excellent drawing lines, has excellent application performance and usage characteristics, and has medium viscosity and good pigment dispersion stability. The present invention relates to an eye makeup liquid cosmetic having the following properties.

Conventional technology Traditionally, eye makeup cosmetics such as eyeliners, eyebrows, eye shadows, and massaging products have been used in the following ways:
For example, a bottle type in which a high viscosity liquid cosmetic is contained in a container, the cosmetic is soaked in a brush, and the brush is smoothed, and a low viscosity liquid cosmetic is contained in a container and a capillary tube with a 1-1 inductor core is drawn. There are several known types of cosmetics, including a pen type in which the cosmetic is drawn out by force into a pen core at the tip made of a sponge, a pencil type with a solid cosmetic in the core, and a type in which the powdered cosmetic is applied with a brush or sponge. There is.

However, since the contents of the bottle type described above are highly viscous, the drawn lines tend to be blurred, the liquid must be refilled frequently during use, and the bottle must be opened using both hands. On the other hand, the bottle type does not have the inconvenience of use-E like the bottle type, but because it uses low viscosity cosmetics, it does not stick to the wrinkles of the skin. It also has the disadvantages that it is difficult to impart water resistance, etc., to cosmetics in order to achieve low viscosity.

Furthermore, the powder type and pencil type have drawbacks similar to those of the bottle type described above, and in particular, the pencil type also has the drawback that the tip is hard and may hurt the eyes.

Problems to be Solved by the Invention Under these circumstances, the present invention is suitable for use in pen-type cosmetics, provides excellent drawn lines, and improves application performance, usage characteristics, and pigment dispersion. This product was developed with the aim of providing a liquid eye makeup cosmetic with excellent stability.

Means for Solving the Problems The inventors of the present invention have conducted intensive research to develop an excellent eye makeup liquid cosmetic for pen-type cosmetics.
Adding a specific amount of soybean phospholipid and nonionic surfactant as a dispersant to an aqueous dispersion containing an inorganic pigment,
Furthermore, it was discovered that the objective could be achieved by adding a specific amount of high-boiling oil as desired and adjusting the total viscosity within a predetermined range, and based on this knowledge, the present invention was completed. It's arrived.

That is, the present invention provides an aqueous dispersion containing an inorganic pigment, in which (A) soybean phospholipid, egg yolk phospholipid, and... (B) at least one phospholipid selected from the hydrogenated products of
6.7-ionic surfactant in an amount in the range of 0.0% by weight and, if desired, the formula (C) (in the formula, W is the amount of high-boiling oil [2], A is the total surface area of the pigment particles) (d), D is the density of high boiling point oil [ri/c++
! ) The viscosity at 25°C is 3 to 300 cp.
The present invention provides a liquid cosmetic that falls within the range of s.

The present invention will be explained in detail below.

41 The liquid cosmetic of the present invention is suitably used in pen-shaped cosmetics,
Examples of pen-shaped cosmetics include, for example, a valve opening type that suppresses the pen core such as a paint marker, an ink supply type that uses piston movement, and an ink extraction type that uses capillary force.
Various types can be mentioned. Furthermore, there is no particular restriction on the type of pen tip, and any pen tip can be used as long as it can be impregnated with the liquid cosmetic, such as a sponge core, a brush made of synthetic resin or animal hair, or a sliver core.

In order to obtain good line drawing, application performance, and usage characteristics when used in such pen-shaped cosmetics, the viscosity of the liquid cosmetic must be in the range of 3 to 300 cps at a temperature of 25°C.

In the liquid cosmetic of the present invention, examples of the aqueous medium used in the aqueous dispersion containing all inorganic pigments include water or a mixture of water and a water-soluble organic solvent. Examples of the water-soluble organic solvent include irritation to the skin. A water-soluble organic solvent that has almost no oxidation and is highly safe for the human body is preferably used.For example, polyhydric alcohols such as ethylene glycol, propylene glycol, and glycerin are preferred as such water-soluble organic solvents.

In addition, inorganic pigments generally have a high specific gravity, have good dispersion stability in the above viscosity range, are resistant to sedimentation, and have the properties necessary for eye makeup cosmetics, such as water resistance and drying properties. Examples of such materials include titanium mica, yellow iron oxide, bismuth oxychloride, black iron oxide, chromium oxide, ultramarine, deep blue, zinc oxide, aluminum oxide, silicon dioxide, titanium oxide, magnesium oxide, and hydroxide. Examples include chromium, calcium carbonate, magnesium carbonate, titanium yellow, red pepper, and the like, and each of these may be used alone, or two or more types may be used in combination. These inorganic pigments are used in a range of 0.1 to 40% by weight, based on the weight of the liquid cosmetic.

In the liquid cosmetic of the present invention, soybean phospholipids and nonionic surfactants are used as dispersants for the inorganic pigment particles. In conventional cosmetics, the dispersion stability of pigment particles is poor, and methods such as adding a stirring ball to the cosmetic container and shaking it before use will re-disperse the pigment that has settled and separated before use. However, the method of use is complicated, and if such an operation is forgotten, there is a risk that the properties of the liquid cosmetic may be impaired. One possible way to solve this problem is to add structural viscosity to the cosmetic to suppress the precipitation and separation of pigments, but this method increases the viscosity too much and is not compatible with pen-shaped cosmetics. Become something.

The liquid cosmetic of the present invention is produced by using a phospholipid and a nonionic surfactant together as a dispersant.

The pigment has extremely good dispersion stability while maintaining the above viscosity range without increasing the viscosity too much. The phospholipid has almost no irritation to the skin and is extremely safe for the human body, and is used to make the surface of the pigment particle lipophilic.

The phospholipid may be soybean phospholipid, egg yolk phospholipid, or a hydrogenated product thereof.

A soybean phospholipid containing zircholine and phosphatidylethanolamine as its main components, and containing these main components in a range of 1θ to 100% by weight, is preferably used.

The blending amount is 0.5 based on the weight of the inorganic pigment.
It is necessary to choose within the range of ~50 weight. This amount is 0.5
If it is less than 5% by weight, the dispersion stability of the pigment particles is poor;
If it exceeds 0% by weight, the viscosity will be too high and the effect of the preservative added as desired will not be sufficiently exerted.

On the other hand, nonionic surfactants have the effect of dispersing pigment particles whose surfaces have been made lipophilic in an aqueous medium.
I'm doing W. This nonionic surfactant/agent should be one that has almost no irritation to the skin and is highly safe for the human body. Examples of such nonionic surfactants include saturated or unsaturated fatty acids having 13 to 23 carbon atoms. polyglycerin (glycerin mole number 4 to 8) ester, carbon number 1
Polyoxyethylene (hereinafter abbreviated as POE) alkyl ether having 2 to 22 saturated or unsaturated alkyl groups and having an added mole number of ethylene oxide of 8 to 50,
Contains saturated or unsaturated fatty acid residues having 13 to 23 carbon atoms,
and the number of moles of ethylene oxide added is 6 to 20.
P sorbitan fatty acid ester, P containing saturated or unsaturated fatty acid residues having 13 to 23 carbon atoms or vegetable oil fatty acid residues, and having an ethylene oxide addition mole number of 5 to 50
OP glycerin fatty acid ester, POFi fiistosterol or Hpog fiistostanol with an ethylene oxide addition mole number of 5 to 50, a saturated or unsaturated alkyl group having 12 to 22 carbon atoms, and an ethylene oxide addition mole number of 1 to 50, A pog-pop (polyoxypropylene) block copolymer in which the number of moles of propylene oxide added is 1 to 50, an alkyl group having 8 to 9 carbon atoms, and a number of moles of ethylene oxy added is 6 to 50. Examples include a certain POE alkylphenyl ether, POK castor oil having an added mole number of ethylene oxide of 8 to 100, and POE hydrogenated castor oil having an added mole number of ethylene oxide of 8 to 100.

These nonionic surfactants may be used alone or in combination of two or more, and the amount of the nonionic surfactant to be blended is 0.00000000000000000000000000000000000000000000 which is based on the weight of the phospholipid.
It is necessary to choose within the range of 25 to 60 weight. This amount is 0
．． If it is less than 25% by weight, the dispersion stability of the pigment particles will be poor, while if it exceeds 6.0% by weight, water resistance will be reduced.

The liquid cosmetic of the present invention may contain a high boiling point oil, if desired. This high boiling point oil reduces the apparent specific gravity of the inorganic pigment particles by forming a complete layer of this oil between the soybean phospholipid layer and the nonionic surfactant layer, and prevents it from forming on the skin. Contains the effect of completely improving the water resistance of the coating film. Examples of such high boiling point oils include fats and oils such as castor oil, waxes such as carnauba wax, and hydrocarbon waxes such as liquid paraffin. 2
You may use combinations of more than one species.

The amount of the high boiling point oil to be blended is determined by the total surface area of the inorganic pigment particles used, and it is necessary to satisfy the relationship expressed by the formula 0 (%). Here, W is the amount of high-boiling oil [2], A is the total surface area [door] of the pigment particles, and the specific surface area [?] of the pigment particles. 7//9] X pigment blending amount [2
] is the value. D is the density of high boiling point oil [f/ctl
]. When the value of W exceeds 2.0, the dispersion stability of the pigment decreases, and when the cosmetic on the tip dries, the high boiling point oil is not inherently compatible with water, so the liquid must be replenished. However, there are problems such as the tips of the ears being hard and even. On the other hand, when the value of W is less than 0.5, although the dry recovery properties of the tips are good, the effect of adding the high-grade oil is not sufficiently exhibited.

In addition to the above-mentioned ingredients, the liquid cosmetic of the present invention includes viscosity adjustment,
Additives used for the purpose of preventing pigment settling, adhesion, water resistance 5, oil resistance, sweat resistance, drying properties, antiseptic properties, etc.
Any one can be blended as desired as long as it does not cause any trouble to the dispersion system. However, it is necessary to adjust the formulation so that the viscosity of the liquid cosmetic is in the range of 3=l 1- to 300 cps.

Next, an example of a preferred method for producing the liquid cosmetic of the present invention will be described. If not all high-boiling point oils are included, for example, blend soybean phospholipids, inorganic pigments, aqueous medium, and nonionic surfactants in this order, stir and mix using an appropriate stirrer, and then mix as desired. A method for producing a homogeneous liquid cosmetic by adding various additives to be used and stirring them. After stirring and mixing soybean phospholipids, pigments, and an aqueous medium using an appropriate stirring machine, a nonionic surfactant is added. A method can be used in which a homogeneous liquid cosmetic is produced by adding and stirring, and then adding various additives as desired and stirring. However, the latter method is a method in which the pigment surface is made lipophilic, Since it tends to cause agglomeration, it is unsuitable for continuous sand mills.

On the other hand, when blending all high-boiling point oils, use a stirrer such as DiSilver to thoroughly stir about half of the aqueous medium, soybean phospholipids, and pigments, and then add them to the mixture in advance by melting them. Add the high boiling point oil and stir, then add the nonionic surfactant previously dissolved in the remaining aqueous medium and stir, and finally add various additives as desired. , a method for producing homogeneous liquid cosmetics by stirring, or soybean phospholipids,
Nonionic surfactant and aqueous medium are all mixed and stirred, then pre-melted high boiling point oil is added.
A method can be used in which an emulsion is created and then thoroughly mixed with a pigment in a ball mill to produce a homogeneous liquid cosmetic.

Effects of the Invention The eye makeup liquid cosmetic of the present invention not only provides excellent line drawing and excellent application performance and usage characteristics, but also has medium viscosity and good pigment dispersion stability. It has excellent properties and is particularly suitable for use in pen-shaped cosmetics.

EXAMPLES Next, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited to these Examples in any way.

The characteristics of the obtained liquid cosmetic were determined according to the following method.

(1) Into a 10cc graduated cylinder with a stopper for dispersion stability, add a sample of Rl o cc.
was added and left at 25° C. for one week, and the entire state of solid-liquid separation was observed and evaluated according to the following criteria.

◎ There is almost no sedimentation separation.

○゛Supernatant is less than 1 cc.

△ The supernatant is 1 cc or more and less than 3 cc.

×, supernatant has 3 CC or more and less than 4 CC.

χ: The supernatant is 4 cc or more.

(2) Cosmetic dispensing ability A sample was filled into a pen-shaped cosmetic tool that had a cosmetic introduction tube with an outer diameter of 0.8 mm and an inner diameter of 0.451131 mm, and was equipped with a tip made of straw hair with an outer diameter of 2 ml. , Cosmetic material discharging performance by cosmetic material delivery was evaluated according to the following criteria.

○: The cosmetic is discharged so as to spread over the entire tip.

Δ: Cosmetic is ejected so as to spread over the entire tip, but it is a little slow.

×: Cosmetic material is discharged from the side of the tip, and the ink is not spread over the entire tip.

Iris: Cosmetics do not spit out.

(3) Overall feeling of use A sample was filled in the same pen-shaped cosmetic tool as in (2) above and applied to the back of the hand, and sensitivity evaluation was performed according to the following criteria.

0: With a simple brush stroke using tissue paper, etc.
Easy to draw lines, adheres well and spreads well.

△: Careful brush stroke is required, and adhesion and spreadability are also slightly poor.

×: In addition to requiring extensive brush strokes, the writing may become blurred.

Tsubasa: I can barely draw it.

(A) Dryness of the tip Fill the sample into a pen-shaped cosmetic tool similar to (2), dispense the cosmetic and apply it to the back of the hand, and then cap the entire device.
After being left in a dry state for one week at 50°C, the condition of the tips was observed. Further, dispense the cosmetic, attach the cap, and take 25 minutes.
After being allowed to stand for 12 hours at a temperature of 65 °C and a humidity of 65 °C, the cap was removed, the entire condition of the tip was observed, and the condition was evaluated according to the following criteria.

◎Even after being left at 50°C for one week, the tips did not dry out and maintained good coating performance.

The tips of the ears are dry after being left at 50°C for one week, but after discharging the cosmetic and leaving them for 12 hours, the tips are restored, with no loose hair, and a good coating condition.

△: The tips are dry after being left at 50°C for one week, and the tips are not flaky even after discharging the cosmetic and leaving for 12 hours.
If you wipe the tip with tissue paper, it will return to its ◎ state.

× Even if you wipe it with tissue paper, the tip will come loose and will not recover.

(5) Usage test - Mo16 with no prior knowledge = Shake the main unit to stir up the ink inside before use.'' We conducted a usage test once a day for two weeks. The number of complaints that occurred at this time was classified as follows, and the number of complaints was totaled.

(b) When I spit out the cosmetics, a thin liquid came out.

(b) When the cosmetic comes out from the tip, the liquid does not come out all over the tip, so you have to carefully smooth the brush, which is a hassle.

0 The tips of the tips have hardened and are difficult to apply.

B) Before dispensing the cosmetic, the tip of the tip is a little dry (there is no problem after dispensing the cosmetic) B) Other Example 1 [1) Black iron oxide 15.0% by weight (2)
Soybean phospholipid 1.0# (3) F
OE (20) Stearyl ether 1.0I(A)
Propylene glycol 5.0〃(6)p
-Methyl oxybenzoate 0.15 11(7)
Propyl p-oxybenzoate 015 (8) Purified water 62. Ou loo, ON Among the above formulations, 30% of (1), (2), (3) and (8) purified water was combined with TA, stirred in a ball mill for 10 hours, and then the remaining ingredients were added. A black eyeliner liquid was prepared by stirring for 30 minutes. The viscosity of this eyeliner was 50 cps at 25°C, and the pH was 7.1.

Each characteristic of this black eyeliner was evaluated and the results are shown in Table 1.

Example 2 (1) Black iron oxide 1.5% by weight (
2) Red pepper 12. OL/(3) Soybean phospholipid 1.4 (A) Fog
('20) Stearyl ether j O (5) Propylene glycol 5. ON(7)p-
Methyl oxybenzoate 0.15 t/(8)
Propyl p-oxybenzoate 0.15 #(9
) Purified water 62.81 100, Q rt Brown eyeliner l of the above composition in the same manner as in Example J
fL was prepared (7), and all properties were evaluated. The results are shown in Table 1. The viscosity of this product was 250 cps at 25° C., and the pH was 7.0.

Comparative Example 1 A black eyeliner liquid was prepared in the same manner as in Example 1 except that oleic acid was used in place of the soybean phospholipid in Example 1 (-1 characteristics were determined. The results are shown in Table 1) The viscosity of this product was 100 cps at 25°C, and the pH was 6.7.

-1'l- Comparative Example 2 (1) Black iron oxide 1.5% superposition (
2) Red pepper 12. ON (3) Candelilla Row 3.0 (A) PO
E (20) Stearyl ether 10 (5) Propylene glycol 5.0 (7) p-
Methyl oxybenzoate 0.15/L (8)
Propyl p-oxybenzoate 09J5 (9)
Purified water 60.2 //100.0 77 Of the above formulations, (1), (2), and (3) were thoroughly kneaded using three rolls, and then (A), (9), and 01 were added,
Stir in a ball mill for 0 hours, then add the remaining ingredients and stir in a ball mill for 30 minutes to prepare a brown eyeliner and evaluate its properties. The results are shown in Table 1 (c').The viscosity of this product was 8302 O-cps at 25°C, and the pH was 7.4.

Table 1 Example 3 (1) Black iron oxide (specific surface area 6.2ba/9) 15
．． 0% by weight (2) Soybean phospholipid 1.
0 (A) POE (20) Stearyl ether
10 (5) Propylene glycol
5.0 (7) Methyl p-oxy7benzoate
0.15 ty(8) ρ~Propyl oxybenzoate 0.15 #(9) Purified water
61.1 //100.0 # Of the above formulations, (1), (2), (3), (A) and 30% of water were mixed and mixed in a ball mill for 10 hours, The remaining ingredients were added and stirred for 30 minutes to prepare a black eyeliner liquid and its properties were determined.

The results are shown in Table 2. Further, the viscosity of this product at 25° C. was 73 cps, and the pH was 7.3.

Example 4 /li) (3) Soybean phospholipid 1.4〃(5)
FOB stearyl ether 1,2 〃
(6) Propylene glycol 4.5
(8) Methyl p-oxybenzoate o, 15a
(9) p~propyl oxybenzoate 0.15
.

OO Purified Water 62.7 #100.0 Brown eyeliner i having the above composition was prepared in the same manner as in Example 3, and its physical properties were evaluated. The results are shown in Table 2. In addition, the viscosity of this product is 229 cpe at 25°C,
The pH was 71.

Comparative Example 3 A black eyeliner liquid was prepared in the same manner as in Example 3, except that Cantellilla wax was not used and the amount of purified water was changed to 62.0 weight range, and the characteristics were evaluated. . The results are shown in Table 2. The viscosity of the shattered product was 50 cps at 25°C, and the pH was 7.1.

-23 = Comparative Example 4 In Example 3, the blending amount of Cantellilla wax was 2.4
A black eyeliner liquid was prepared in the same manner as in Example 3, except that the weight range was changed to 596 weight range, and the amount of purified water was changed to 596 weight range, and all physical properties were evaluated. The results are shown in Table 2. Also, the viscosity of this product is 232 cps at 25°C, and the pH is 7.
It was ゜2.

26- As is clear from Tables 1 and 2, the liquid cosmetic of the present invention has excellent dispersion stability and cosmetic dispensability, and has good airtightness due to the structure of the container. If so, a good usability can be obtained without the need for stirring the ball when reused for at least one week.

Claims (1)

[Scope of Claims] 1. In an aqueous dispersion containing an inorganic pigment, (A) soybean phospholipid, egg yolk phospholipid, and hydrogenated thereof in an amount ranging from 0.5 to 50% by weight based on the weight of the pigment. and (B) a nonionic surfactant in an amount ranging from 0.25 to 6.0% by weight based on the weight of the phospholipid. A liquid cosmetic having a viscosity in the range of 3 to 300 cps at a temperature of 25°C. 2. To an aqueous dispersion containing an inorganic pigment, (A) an amount selected from soybean phospholipids, egg yolk phospholipids, and hydrogenated products thereof in an amount ranging from 0.5 to 50% by weight based on the weight of the pigment; (B) a nonionic surfactant in an amount ranging from 0.25 to 6.0% by weight based on the weight of the soybean phospholipid; and (C) a nonionic surfactant of the formula 0.5≦W/( A×D/100)≦2.0 (in the formula, W is the blended amount of high-boiling oil [g], A is the total surface area of pigment particles [m^2], and D is the density of high-boiling oil [g] /c
A liquid cosmetic having a viscosity in the range of 3 to 300 cps at a temperature of 25° C., characterized by containing an amount of high boiling point oil that satisfies the relationship (m^3).