CN112494357A - Powder adhesive and cosmetic - Google Patents

Abstract

The invention relates to the technical field of daily cosmetics, in particular to a powder adhesive and a cosmetic. The invention discloses a powder adhesive which has a good adhesion effect, wherein polytetrafluoroethylene, magnesium stearate and microcrystalline cellulose have synergistic effect, so that smoothness, coloring effect and anti-falling performance of cosmetic application can be effectively improved, the pH value is kept in a proper range, and acid-base stimulation to skin is avoided. Compared with the powder adhesive which is singly used by synthetic wax, polyethylene, polytetrafluoroethylene, magnesium stearate or microcrystalline cellulose, the powder adhesive has obvious effect difference.

Description

Powder adhesive and cosmetic

Technical Field

The invention relates to the technical field of daily cosmetics, in particular to a powder adhesive and a cosmetic.

Background

The cosmetic powder block is an important class of cosmetic products for beauty decoration. Cosmetic powder sticks generally comprise: pressed powder, blush, eye shadow, etc. The formula generally comprises the following components: constitution powder, colorant, functional powder, binder, functional additive such as antioxidant and antiseptic. The binders can be divided into liquid binders and powder binders.

The powder adhesive is metal soap, wax, etc. Metal soaps are alkaline materials and excessive use may cause the pH of the product to be too high, causing skin irritation. Waxes are typically micronized powders of synthetic waxes and polyethylene, and excessive use may cause rough skin feel and affect consumer experience.

Disclosure of Invention

In view of the above, the present invention provides a powder adhesive and a cosmetic, which have both excellent spreadability and excellent anti-falling properties, and are free from acid-base irritation.

The specific technical scheme is as follows:

the invention provides a powder adhesive which is prepared from the following components:

polytetrafluoroethylene, magnesium stearate and microcrystalline cellulose.

Polytetrafluoroethylene (PTFE), a high molecular weight polymer made by polymerization of tetrafluoroethylene as a monomer. It has the advantages of high temperature resistance, acid and alkali resistance, and resistance to various organic solvents, so it is nontoxic when applied to cosmetics, and will not cause consumer allergy. Because the friction coefficient is extremely low, the lubricant can play a role in lubrication when being applied to cosmetics. Because of its tackiness, it can be used as an adhesive in cosmetic powder sticks. But the adhesive force is not high, the effect can be achieved only by using more than 3 wt%, but the price is high and the cost is high.

In the present invention, the relative density of Polytetrafluoroethylene (PTFE) is 0.93 to 0.98; the grain diameter is 5-6 microns; melting point 300-.

Magnesium stearate, also known as magnesium stearate, is prepared by reacting molten stearic acid with magnesium oxide or by reacting a solution of sodium stearate with a solution of dilute magnesium sulfate. White, odorless powder. Slightly soluble in water and soluble in hot ethanol. The product can be used as adhesive in cosmetic powder block products, and also has lubricating effect.

In the present invention, the stearic acid content (calculated as MgO) in magnesium stearate is 6.8-8.3 wt%. Drying loss is less than or equal to 4 percent, relative density is 1.01-1.04, and melting point is 88-90 ℃.

Microcrystalline cellulose is a straight-chain polysaccharide substance, belongs to a cellulose depolymerization product, and is white, odorless and tasteless crystalline powder. The non-colloidal microcrystalline cellulose used in the patent has low water absorption rate, and avoids the influence of powdery expansion of the prepared cosmetics on the smearing performance.

In the invention, the pH value of the powder microcrystalline cellulose is 5-7, the particle size is 5-10 microns, the water absorption rate is less than 3.5g of water/g, and the oil absorption rate is less than 3g of oil/g.

According to the invention, the polytetrafluoroethylene, the magnesium stearate and the microcrystalline cellulose in the powder adhesive have synergistic effect, so that smoothness, coloring effect and anti-falling performance of the cosmetic can be effectively improved, the pH value is kept in a proper range (the pH value is 6.5-7.5), and the skin is not stimulated by peracid or over-alkali.

In the invention, the mass ratio of the polytetrafluoroethylene to the magnesium stearate to the microcrystalline cellulose is (0.15-2): (0.15-2): (0.1-1.5), preferably (0.6-1.5): (0.8-1.2): (0.2-0.8), more preferably 0.6: 0.8: 0.6, 0.4: 0.4: 0.2, 1.2: 1.2: 0.6 or 1.5: 1.2: 0.8. the mass ratio of the components of the powder adhesive is in the range, so that the cosmetic smearing performance and the falling resistance performance are improved.

The invention also provides the application of the powder adhesive in cosmetics.

The invention also provides a cosmetic, which comprises the powder adhesive;

the mass content of the powder adhesive in the cosmetic is 0.4-5.5%.

The powder adhesive provided by the invention can enable the cosmetic to have good adhesion effect, excellent smearing performance and falling resistance performance and keep the pH value in a proper range only by using a small amount in the cosmetic.

The powder adhesive of the present invention is suitable for a powder cosmetic product including, but not limited to, eye shadow, blush, pressed powder or high gloss powder.

The invention also provides an eye shadow which comprises the powder adhesive, filling powder, functional powder, a first pigment, a second pigment, an emollient and a stabilizer.

The eye shadow provided by the invention has smooth smearing feeling, excellent coloring effect and anti-falling performance, and has no acid-base stimulation to skin.

In the invention, the mass percent of the polytetrafluoroethylene is 0.15-2%, preferably 0.6-1.5%; it should be noted that the adhesion of polytetrafluoroethylene is not high, and the amount of polytetrafluoroethylene used is 3 wt% or more to achieve the effect, and the cost is high. The polytetrafluoroethylene is low in dosage in the cosmetics, so that the preparation cost of the cosmetics is effectively saved.

0.15-2% of magnesium stearate, preferably 0.8-1.2%; magnesium stearate belongs to metal soap, the pH value is higher, and the dosage of the magnesium stearate is lower, so that the pH value of a system is effectively maintained to be 6.5-7.5.

0.1-1.5% of microcrystalline cellulose, preferably 0.2-0.8%;

20-50% of the filling powder, preferably 20-40%, and more preferably 25-35%; the filling powder comprises one or more than two of mica, talcum powder, kaolin, calcium hydrophosphate, calcium carbonate and calcium phosphate, and/or one or more than two of a compound formed by one of mica, talcum powder, kaolin, calcium hydrophosphate, calcium carbonate and calcium phosphate and one of triethoxyoctylsilane, polydimethylsiloxane, hydrogenated polydimethylsiloxane, sodium stearyl glutamate, sodium myristoyl lactamate, lauroyl lysine, stearic acid, magnesium stearate and magnesium myristate, preferably talc/triethoxyoctylsilane and/or mica, wherein the content of mica is 14.3-21.8%, and the content of talc/triethoxyoctylsilane is 0-10%;

3-20% of the functional powder, preferably 5-17%; the functional powder comprises one or more than two of nylon-12, boron nitride, silica, polymethylsilsesquioxane, polyethylene, polypropylene, polymethyl methacrylate, HDI/trihydroxymethyl hexyl lactone cross-linked polymer, vinyl polydimethylsiloxane/polymethylsiloxane silsesquioxane cross-linked polymer, cellulose and polyamide-5, preferably nylon-12, boron nitride and silica, wherein the content of nylon is 2-4%, the content of boron nitride is 3%, and the content of silica is 0-10%;

1-50% of the first pigment, preferably 20-50%, and more preferably 39.4%; the first pigment comprises one or more of CI42090, CICI45410, CI45380, CI77007, CI77288, CI77266, CI77000, CI75470, CI77891, CI77019, CI77491, CI77492, CI77499, CI 75470/maltodextrin, CI77266 and CI77163, and/or one or more complexes of one of CI42090, CICI45410, CI45380, CI77007, CI77288, CI77266, CI77000, CI75470, CI77891, CI77019, CI77491, CI77492, CI77499, CI77266 and CI77163 with at least one of mica, synthetic fluorophlogopite, sodium calcium borosilicate, tin oxide, alumina and silica, preferably CI 75470/maltodextrin, synthetic fluorophlogopite/CI 77891/tin oxide complexes, CI 77891/alumina/silica and mica/tin oxide, wherein, 1.4 percent of CI 75470/maltodextrin, 18 percent of synthetic fluorophlogopite/CI 77891/stannic oxide compound, 10 percent of CI 77891/alumina/silica and 10 percent of mica/stannic oxide;

0.1-10% of the second pigment, preferably 1-8%, and more preferably 3%; the second pigment comprises one or more than two of CI77891, CI77019, CI77491, CI77492, CI77499, CI77266 and CI77163, and/or one or more than two of a compound formed by one of CI77891, CI77019, CI77491, CI77492, CI77499, CI77266 and CI77163 and at least one of mica, synthetic fluorophlogopite, sodium calcium borosilicate, tin oxide, aluminum oxide and silica, preferably mica/tin oxide/CI 77891, wherein mica/tin oxide/CI 778913%;

3-30% of the emollient, preferably 10-30%, and more preferably 22.3%; the emollient comprises one or more of polydimethylsiloxane, diisostearyl malate, phenyl trimethicone, caprylic/capric triglyceride, octyldodecanol stearoyloxystearate, pentaerythritol tetraisostearate, dipentaerythritol tri-polyhydroxystearate, dipentaerythritol hexahydrostearate/hexastearate/hexaabietate, squalane, cetyl ethylhexanoate, octyl methicone, ethylhexyl palmitate, glycerol tri (ethylhexanoate), hydrogenated polyisobutene, hydrogenated polydecene, polybutene, preferably polydimethylsiloxane, diisostearyl malate, phenyl trimethicone, caprylic/capric triglyceride, and tocopherol, wherein 12% of polydimethylsiloxane, 4% of diisostearyl malate, and 4% of diisostearyl malate, Phenyl trimethicone 4%, caprylic/capric triglyceride 2%, tocopherol 0.3%;

0.1-5% of the stabilizer, preferably 0.1-2%; the stabilizer comprises one or more of caprylyl glycol, glyceryl caprylate, tocopherol, BHT, silver oxide and silver, preferably 0.5% of glyceryl caprylate.

The invention also provides a preparation method of the eye shadow, which comprises the following steps:

step 1: uniformly mixing the filling powder, the functional powder, the first pigment and the powder adhesive to obtain a phase A;

step 2: mixing and dissolving the emollient and the stabilizer uniformly to obtain a phase B;

and step 3: and adding the phase B into the phase A, uniformly mixing, adding a second pigment, uniformly mixing, and performing compression molding to obtain the eye shadow.

In step 1 of the present invention, the mixing is preferably performed under stirring at a rate of 1500-.

In step 3 of the present invention, the mixing of phase B and phase A is preferably performed under stirring, and the stirring rate is 1500-; the mixing with the second pigment is preferably carried out under stirring at a rate of 500-.

The preparation method of the eye shadow provided by the invention is simple.

According to the technical scheme, the invention has the following advantages:

the invention provides a powder adhesive which has a good adhesion effect, wherein polytetrafluoroethylene, magnesium stearate and microcrystalline cellulose have synergistic effects, so that smoothness, coloring effect and anti-falling performance of cosmetic application can be effectively improved, the pH value is kept in a proper range, and acid-base stimulation to skin is avoided. Compared with the powder adhesive which is singly used by synthetic wax, polyethylene, polytetrafluoroethylene, magnesium stearate or microcrystalline cellulose, the powder adhesive has obvious effect difference.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it should be apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The raw materials used in the examples of the present invention were all commercially available.

In the present invention, "/" indicates a complex of two substances, for example: the "talcum powder/triethoxyoctylsilane" refers to a compound of talcum powder and triethoxyoctylsilane, wherein the "98% talcum powder/2% triethoxyoctylsilane" refers to that the talcum powder and triethoxyoctylsilane are respectively used in an amount of 98 wt% and 2 wt%. Such complexes as presented herein are all commercially available.

Examples 1 to 4

This example is the preparation of eye shadow, the formulation is shown in table 1, and the specific preparation steps are as follows:

(1) placing the phase A raw material in a high-speed dispersion machine and uniformly stirring at the speed of 2500 rpm;

(2) b, uniformly mixing and dissolving the raw materials;

(3) adding the raw material of the phase B into the phase A and stirring the mixture evenly at the speed of 2500 rpm;

(4) then adding the C-phase raw material, and uniformly stirring at the speed of 1000 rpm;

(5) and (5) placing the material body obtained in the step (4) in an aluminum mould for compression molding.

Table 1 examples 1-3 eye shadow formulations (%)

Comparative examples 1 to 4

This example is the preparation of eye shadow, the formulation is shown in table 2, and the specific preparation steps are the same as in example 1.

Table 2 comparative examples 1 to 5 eye shadow formulations (%)

Test examples

The following tests were carried out on the eye shadows obtained in examples 1 to 4 and comparative examples 1 to 4:

1. the use test was performed:

1) smearing feeling: 10 subjects used the sample for makeup, very soft 5 points, generally soft 4 points, too hard 2 points, too sticky 2 points, the higher the average score, the better the smearing feel;

2) coloring effect: when 10 subjects are smeared with eye shadow, the color dressing strength is 1-5 points, and the higher the score is, the dressing degree is high.

2. And (3) pH value test:

the test is carried out by adopting a GB/T13531.1-2008 method:

diluting: weighing a sample (accurate to 0.1g), adding 9 parts of boiled and cooled laboratory water, heating to 40 ℃, continuously stirring to be uniform, filtering, and cooling to a specified temperature for later use.

And (3) correction: the pH meter was calibrated according to the instructions of the instrument, and two standard buffer solutions were selected for calibration at the specified temperature, or for calibration under a temperature compensation system.

And (3) determination: the temperatures of the electrode, the washing water and the standard buffer solution are adjusted to a predetermined temperature, as close as possible, or adjusted to room temperature at the same time.

After calibration of the instrument, the electrodes were first rinsed with water and then blotted dry with filter paper, the electrodes were carefully inserted into the sample, the electrodes were submerged, and the counts were recorded until the pH meter reading stabilized. After reading, the electrode needs to be thoroughly cleaned for standby.

Counting: one product was measured three times and the average was taken.

3. And (3) anti-drop test:

after the eye shadow is pressed, the powder tablet with qualified appearance is taken, the height is 50cm, the front face is upwards fallen, the wood board (the thickness is 2.5cm) is fallen until the wood board is damaged, and the times are recorded. The number of times is 1-3, and the product is qualified when the number of times is more than 3.

The test results are shown in table 3.

From the results in table 3, it can be seen that, compared to comparative example 1 in which synthetic wax is used, comparative example 5 in which polyethylene is used as a binder, and comparative examples 2 to 4 in which polytetrafluoroethylene, magnesium stearate, or microcrystalline cellulose is used alone as a binder, examples 1 to 4 in which polytetrafluoroethylene, magnesium stearate, and microcrystalline cellulose are compounded together are used as a binder in an eye shadow, so that the eye shadow smearing feeling, the coloring effect, and the anti-falling effect are all improved, the pH value is also maintained in an appropriate range, and the difference from comparative examples 1 to 4 is significant. Comparative example 6 increased the binder polyethylene to blend with polytetrafluoroethylene, magnesium stearate and microcrystalline cellulose and the total amount of binder used increased but the results of the drop resistance test were not improved and the formulation cost increased. Comparative example 7 adding an adhesive synthetic wax to be compounded with polytetrafluoroethylene, magnesium stearate or microcrystalline cellulose, the adhesive effect was too strong after the addition of the synthetic wax, the result of the use test was deteriorated and the use was not utilized. The above shows that the polytetrafluoroethylene, the magnesium stearate or the microcrystalline cellulose have synergistic effect on the application performance and the falling resistance of the cosmetics.

In comparative example 8, magnesium stearate used in an amount exceeding 2% and pH 9 caused irritation, and the use test and coloring effect were also deteriorated, indicating that polytetrafluoroethylene, magnesium stearate, or microcrystalline cellulose are more advantageous for improving the cosmetic spreadability and anti-falling property within a certain amount and ratio range.

TABLE 3

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A powder adhesive characterized by being made from the following components:

polytetrafluoroethylene, magnesium stearate and microcrystalline cellulose.

2. The powder adhesive according to claim 1, wherein the mass ratio of the polytetrafluoroethylene, the magnesium stearate and the microcrystalline cellulose is (0.15-2): (0.15-2): (0.1-1.5).

3. The powder adhesive according to claim 1, wherein the mass ratio of the polytetrafluoroethylene, the magnesium stearate and the microcrystalline cellulose is (0.6-1.5): (0.8-1.2): (0.2-0.8).

4. Use of a powder adhesive according to any one of claims 1 to 3 in cosmetics.

5. A cosmetic comprising the powder adhesive of claims 1 to 3;

the mass content of the powder adhesive in the cosmetic is 0.4-5.5%.

6. The cosmetic according to claim 5, wherein the cosmetic is an eye shadow, blush, pressed powder or high gloss powder.

7. An eye shadow, comprising: the powder binder, the filler powder, the functional powder, the first pigment, the second pigment, the emollient, and the stabilizer of any one of claims 1 to 3.

8. The eye shadow of claim 7, wherein the eye shadow is prepared by mass percent,

0.15-2% of polytetrafluoroethylene;

0.15-2% of magnesium stearate;

microcrystalline cellulose 0.1-1.5%;

20-50% of filling powder;

3-20% of functional powder;

1-50% of first pigment;

0.1-10% of second pigment

3-30% of an emollient;

0.1 to 5 percent of stabilizer.

9. The eye shadow of claim 7, wherein the filling powder comprises one or more of mica, talc, kaolin, calcium hydrogen phosphate, calcium carbonate and calcium phosphate, and/or one or more of a complex of one of mica, talc, kaolin, calcium hydrogen phosphate, calcium carbonate and calcium phosphate with one of triethoxyoctylsilane, polydimethylsiloxane, hydrogenated polydimethylsiloxane, sodium stearoylglutamate, sodium myristoyl lactamate, lauroyl lysine, stearic acid, magnesium stearate and magnesium myristate;

the functional powder comprises one or more than two of chinlon-12, boron nitride, silica, polymethylsilsesquioxane, polyethylene, polypropylene, polymethyl methacrylate, HDI/trihydroxymethyl hexyl lactone cross-linked polymer, vinyl polydimethylsiloxane/polymethylsiloxane silsesquioxane cross-linked polymer, cellulose and polyamide-5;

the first pigment comprises one or more than two of CI42090, CICI45410, CI45380, CI77007, CI77288, CI77266, CI77000, CI75470, CI77891, CI77019, CI77491, CI77492, CI77499, CI 75470/maltodextrin, CI77266, and CI77163, and/or one or more than two of CI42090, CICI45410, CI45380, CI77007, CI77288, CI77266, CI77000, CI75470, CI77891, CI77019, CI77491, CI77492, CI77499, CI77266, and CI77163 in complex with at least one of mica, synthetic fluorophlogopite, sodium calcium borosilicate, tin oxide, aluminum oxide, and silica;

the second pigment comprises one or more than two of CI77891, CI77019, CI77491, CI77492, CI77499, CI77266 and CI77163, and/or one or more than two of a compound formed by one of CI77891, CI77019, CI77491, CI77492, CI77499, CI77266 and CI77163 and at least one of mica, synthetic fluorophlogopite, calcium sodium borosilicate, tin oxide, aluminum oxide and silica;

the emollient comprises one or more of polydimethylsiloxane, diisostearyl malate, phenyl trimethicone, caprylic/capric triglyceride, octyldodecanol stearoyloxystearate, pentaerythritol tetraisostearate, dipentaerythritol tri-polyhydroxystearate, dipentaerythritol hexahydrostearate/hexastearate/hexaabietate, squalane, cetyl ethylhexanoate, octyl methicone, ethylhexyl palmitate, glycerol tri (ethylhexanoate), hydrogenated polyisobutene, hydrogenated polydecene, and polybutene;

the stabilizer comprises one or more of caprylyl glycol, glyceryl caprylate, tocopherol, BHT, silver oxide and silver.

10. The method of making an eye shadow of claim 7, comprising the steps of:

step 1: uniformly mixing the filling powder, the functional powder, the first pigment and the powder adhesive to obtain a phase A;

step 2: mixing and dissolving the emollient and the stabilizer uniformly to obtain a phase B;

and step 3: and adding the phase B into the phase A, uniformly mixing, adding a second pigment, uniformly mixing, and performing compression molding to obtain the eye shadow.