JP2010265255A - Stick-like oily cosmetic and method for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stick-like oily cosmetic having good moldability, without problems in breakage during use, soft with good slip and luster when applied to a lip etc., and directly applicable even to a filling container. <P>SOLUTION: The stick-like oily cosmetic includes 9-13 mass% of the total amount of wax; and 10-30 mass% of hydrogenated polyisobutene. The stick-like oily cosmetic is prepared by directly filling an oily cosmetic having a shrinkage percentage of 1.5-2.5 when solidified with a 27 mm square metal mold in the filling container. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a rod-like oily cosmetic and a method for producing the same.

BACKGROUND ART Rod-like oily cosmetics filled with oily cosmetics in stick-like containers are widely used as various cosmetics including lip cosmetics. Recent consumers are demanding soft, lustrous, and stretchable stick-shaped cosmetics.

Further, in many cases, the rod-like oily cosmetic is filled in a feeding container (Patent Documents 1 to 3). As the molding at that time, there are a method of filling a feeding container after molding in a metallic mold, a method of directly filling a rod-shaped container, and the like. Among such methods, the method of filling in a feeding container after molding in a metallic mold has the disadvantage that the cost becomes high and the structure is complicated and water leakage is liable to occur because cooling water is used.

However, when the oily cosmetic has a soft composition as described above, it cannot be sufficiently applied to the filling method by directly filling the rod-shaped container, and the releasability from the filling container such as a capsule becomes worse at the time of filling molding. There is a problem. Further, when the efficiency of the cooling process is low in production, there is also a problem that distortion is likely to occur in the rod-like oily cosmetic. In addition, there is a problem of breakage during use, and the releasability of the sleeve and capsule of the container is deteriorated. When strongly adhering to the sleeve in the container, stress is applied at the time of feeding and lowering, and the rod-like oily cosmetic material collapses or tears, resulting in poor usability.

Japanese Patent Publication No. 5-3450 JP 2005-306845 A JP 2006-199644 A

In view of the above, the present invention has good moldability, has no problem of bending during use, is soft when applied to lips, etc., has good elongation, is glossy, and can be directly applied to a filling container. An object of the present invention is to provide a rod-like oily cosmetic that can be produced.

The present invention comprises an oily makeup comprising a total amount of wax of 9 to 13% by mass, hydrogenated polyisobutene of 10 to 30% by mass, and a shrinkage of 1.5 to 2.5 when solidified in a 27 mm square metal mold. It is a rod-like oily cosmetic characterized in that it is directly filled in a filling container.

It is preferable that the rod-like oily cosmetic further contains silicic acid anhydride.
The silicic acid content is preferably 4 to 10% by mass.

The direct filling container is preferably a stick-shaped container directly filled with an oily cosmetic, a container in which a resin capsule is mounted and the capsule is released after filling the container with the oily cosmetic, or a stick-shaped backfilling container. .

In the present invention, the total amount of wax is 9 to 13% by mass, hydrogenated polyisobutene is contained in an amount of 10 to 30% by mass, and the shrinkage ratio of the oily cosmetic when solidified in a 27 mm square metal mold is 1.5 to 2.5. And a step (1) for preparing a cosmetic composition, and a step (2) for directly filling the cosmetic composition obtained in the step (1) into a filling container. It is also a manufacturing method of the fee.

It is preferable that the rod-like oily cosmetic further contains silicic acid anhydride.
It is preferable that content of the said silicic acid anhydride is 4-10 mass%.

The direct filling container is preferably a stick-shaped container directly filled with an oily cosmetic, a container in which a resin capsule is mounted and the capsule is released after filling the container with the oily cosmetic, or a stick-shaped backfilling container. .

The rod-like oily cosmetic of the present invention has a good moldability, has no problem of bending when in use, is soft when applied to the lips, etc., has good elongation, is glossy, and is low in cost. It has the effect that it can be used for a filling container.

The present invention is described in detail below.
The rod-like oily cosmetic of the present invention contains a specific amount of a wax component and hydrogenated polyisobutene and has a specific shrinkage rate. By satisfying the above-described requirements, a rod-like oily cosmetic material having excellent performance in terms of usability of elongation and gloss without causing releasability and breakage problems can be obtained.

When the rod-like oily cosmetic material having the soft composition as described above is molded by a method of directly filling into a filling container, problems such as releasability and breakage are likely to occur. As a result of examining the cause of such a problem, it is clear that the shrinkage characteristic of the cosmetic in the process of solidifying by cooling after solidifying the stick-shaped oily cosmetic made into a liquid by heating is an important issue Became. That is, in the case of a rod-like oily cosmetic directly filled in a filling container, if the cosmetic composition has a shrinkage that is too small, the releasability deteriorates, so that it easily adheres to the capsule at the time of molding, and is fed out or lowered. Occasional stress can cause collapse and the like. On the other hand, if the shrinkage rate is too large, the rod-like shape becomes too thin, and it becomes easy to break during use or the feeling of use becomes worse.

From the above viewpoint, the cosmetic composition is particularly soft, and by limiting the shrinkage rate to a specific range, the above-mentioned problems are solved, and even when the filling container is filled directly, A rod-like oily cosmetic with excellent performance can be obtained without causing problems.

In the rod-like oily cosmetic of the present invention, the total amount of wax is 9 to 13% by mass. By making the total amount of the wax within such a range, the cosmetic composition is soft, stretchable and glossy. The rod-like oily cosmetic of the present invention is for solving the problems that occur in such a soft cosmetic with less wax.

As said wax, what is common in the cosmetics field | area can be used, animal waxes, such as beeswax, honey beeswax, whale wax, and serax; vegetable waxes, such as candelilla wax, carnauba wax, rice bran wax, and molefish; Any of mineral waxes such as microcrystalline wax, paraffin, ceresin, and synthetic hydrocarbon wax can be used.

The rod-like oily cosmetic of the present invention contains 10 to 30% by mass of hydrogenated polyisobutene. By setting it within the above range, it is possible to obtain a rod-shaped cosmetic material having good elongation and good gloss.
The above hydrogenated polyisobutene is widely used as a cosmetic raw material, and is purified polybutene HV-100F (SB) (manufactured by Nippon Natural Products), polybutene 100R, polybutene 300R, polybutene 300H, polybutene 2000H (above, Idemitsu Kosan Co., Ltd.) Product), Pearl Ream 18, Pearl Ream 24, Pearl Ream 46 (above, manufactured by NOF Corporation) can be used.

The rod-like oily cosmetic of the present invention can use other components widely used in oily cosmetics.
The oily components that can be used include hydrocarbons, fats and oils, hardened oils, ester oils, fatty acids, higher alcohols, regardless of the origin, liquid oil, or other origin of animal oils, vegetable oils, synthetic oils, etc. Silicone oils, fluorine-based oils, lanolin derivatives, oily gelling agents and the like can be used. Specifically, hydrocarbons such as liquid paraffin, α-olefin oligomer, squalane; oils and fats such as olive oil, mink oil, macadamian nut oil; octyldodecyl myristate, isostearyl myristate, glyceryl trioctanoate, tri ( Esters such as caprylic acid / capric acid) glyceryl, polyglyceryl diisostearate, polyglyceryl triisostearate, diethylpentanoic acid neopentyl glycol, jojoba oil; stearic acid, lauric acid, myristic acid, behenic acid, isostearic acid, oleic acid, etc. Fatty acids; higher alcohols such as stearyl alcohol, cetyl alcohol, lauryl alcohol, oleyl alcohol, isostearyl alcohol, behenyl alcohol, octyldodecanol; high degree of polymerization Silicones such as methylpolysiloxane, methylphenylpolysiloxane, alkoxy-modified polysiloxane, partially crosslinked organopolysiloxane, and fluorine-modified polysiloxane; fluorine-based oils such as perfluorodecane, perfluorooctane, and perfluoropolyether; lanolin, Examples include lanolin derivatives such as lanolin acetate, lanolin fatty acid isopropyl, lanolin alcohol, and oily gelling agents such as 12-hydroxystearic acid, dextrin palmitate, palmitic acid / 2-ethylhexanoic acid dextrin, dextrin stearate, palmitic acid / Dextrin fatty acid esters such as dextrin stearate, dextrin oleate, dextrin isopalmitate, dextrin isostearate; Sucrose fatty acid esters such as sucrose acetate, stearic acid acetate; organically modified clay minerals such as aluminum isostearate, calcium stearate and dimethyl distearyl ammonium hectorite; diisostearyl malate; hydrogenated palm oil, dimerlinoleic acid water Castor oil, monostearic acid hydrogenated castor oil, castor oil, tri (caprylic acid / capric acid / myristic acid / stearic acid) glyceryl lauroyl glutamate di (octyldodecyl / phytosterin / behenyl) hydroxystearate phytosteryl, oleic acid phytosteryl, etc. Petrolatum, petrolatum, cholesteryl hydroxystearate, dipentaerythrityl hexahydroxystearate tetra (hydroxystearic acid / isostearic acid) dipentaethirithyl Mention may be made of a strike like oil and the like.

Further, organic pigments such as red No. 202 and yellow No. 4 and raked products thereof, inorganic colored pigments such as bengara, yellow iron oxide, black iron oxide, mica titanium, bengara-coated mica titanium, titanium oxide-coated glass flakes, etc. Inorganic particles such as colored pigments, mica, talc, kaolin, titanium dioxide, zinc oxide, polyethylene particles, nylon powder, crosslinked polystyrene, methylsiloxane network polymer, organic powders such as cellulose powder, preservatives, fragrances, plant extracts, An antioxidant etc. can be mix | blended.

The rod-like oily cosmetic of the present invention is obtained by directly filling a filling container with an oily cosmetic having a shrinkage ratio of 1.5 to 2.5 when solidified in a 27 mm square metal mold. The oily cosmetic has good moldability when the shrinkage rate is within the above range. That is, the present invention makes it difficult to cause problems such as releasability, breakage and tearing even with a soft oily cosmetic having the above-described composition with a small amount of wax and a large amount of high-viscosity oil. When the shrinkage rate of the oily cosmetic is less than 1.5, the cosmetic is attached to the sleeve or capsule in the container, which causes a problem that the releasability is poor. When the shrinkage rate exceeds 2.5, the rod-like shape becomes too thin and is likely to be broken during use.

Although the method of making the shrinkage rate within the above-mentioned range is not particularly limited, for example, by adjusting the addition amount of silicic acid anhydride described below, a rod-like oily cosmetic having a predetermined shrinkage rate can be obtained. it can.

The oily cosmetic of the present invention preferably contains silicic anhydride. By containing the above silicic anhydride, the shrinkage rate of the cosmetic can be controlled. As for content of the said silicic acid anhydride, it is more preferable that it is 4-10 mass% with respect to cosmetics whole quantity. By setting it within the above-mentioned range, it becomes easy to have the predetermined shrinkage rate of the present invention. Addition of the above-mentioned silicic acid anhydride is preferable in that bleeding of cosmetics is suppressed and a smooth and stable strength can be obtained.

The silicic acid anhydride preferably has a particle size of 10 to 30 μm. When the particle size of the silicic acid anhydride is less than 10 μm, the strength may be insufficient. When the particle diameter of the silicic acid anhydride exceeds 30 μm, the filling moldability may not be sufficiently improved.

The rod-like oily cosmetic of the present invention is directly filled into a filling container. A direct filling container refers to the container shape | molded by filling cosmetics directly in a container. More preferably, it is particularly preferable to use a rod-shaped container directly filled with an oily cosmetic, a container in which a resin capsule is mounted and the capsule is released after filling the container with the oily cosmetic, and a rod-shaped backfilled container. When these containers are used, the conventional cosmetics have a problem that the cosmetics easily adhere to sleeves and capsules in the containers at the time of production. However, since the cosmetic of the present invention has a shrinkage ratio of 1.5 to 2.5, a cosmetic composition having a soft composition can be obtained without causing problems in production. Furthermore, even when in use, the rod-like oily cosmetic material does not collapse or tear when folded or lowered. Further, in the case of a cosmetic using a stick-shaped cosmetic molded with a metallic mold, a clearance is provided so that it can be easily inserted into the dimensions of the lipstick mold and the dimensions of the container. For this reason, in the case of contraction, the clearance further widens, thereby causing a problem of falling out of the container. Therefore, this invention can be used conveniently only in the oil-based cosmetics used for a direct filling container.

As the feeding container, it is preferable that the rod-like oily solid cosmetic in the filling member can be fed out or pulled back, for example, a container front part and a container rear part which can be rotated relative to the container front part. Is relatively rotated in one direction, the moving body disposed in the filling member moves forward, causing the stick-like oily solid cosmetic material to appear from the opening at the tip of the container, and the container front and the container rear are in one direction. When the rotating body is rotated in the opposite direction in the opposite direction, the moving body that has advanced moves backward, and a member having a mechanism for pulling back the rod-like oily solid cosmetic by a pressure reducing action (an action for maintaining a sealed state) in the filling member can be used. .

The rod-like oily cosmetic of the present invention is not particularly limited in the production method, and can be produced by an ordinary cosmetic production method. More specifically, it can be produced by the following production method. The method for producing a rod-like oily cosmetic described in detail below is also one aspect of the present invention.

First, a cosmetic composition containing a predetermined amount of each component described above and having a specific shrinkage ratio is prepared (step (1)). In the said process (1), the manufacturing method of cosmetics is not specifically limited, It can manufacture by a normal method.

The method for filling cosmetics is not particularly limited, and a method for directly filling a stick-shaped container with oily cosmetics to obtain a sticky oily cosmetic after cooling, or a container with a resin capsule directly filled with oily cosmetics and cooling. Thereafter, it can be filled by a method of removing a capsule to obtain a stick-shaped cosmetic, a method of cooling a stick-shaped back filling container, or the like. In the rod-like oily cosmetic of the present invention, there is no problem such as poor releasability that has occurred in the case of producing by these other methods, and the obtained rod-like oily cosmetic is also broken or pulled down There is no problem of collapse or tearing.

Cooling after filling in the molding step may be performed by cooling air or water. Cooling with cooling air generally has the advantages that air temperature control is easy and the equipment is simple, while the cooling efficiency is poor and the bar-shaped cosmetic is likely to be distorted. However, since the rod-like oily cosmetic of the present invention has good moldability as described above, even if it is cooled by cooling air, the cosmetic having good properties causes a problem in moldability. You can get without.

The stick-like oily cosmetic of the present invention includes lipstick, lip balm, foundation, eye color, eyebrow, eyeliner, eye shadow, mascara, concealer, sunscreen agent, makeup base material, hair cosmetics (blush color, pomade, etc.), It can be used as various cosmetics such as antiperspirants and depilatory agents. In particular, it can be suitably used as a cosmetic for lips such as lipsticks and lip balms.

EXAMPLES Hereinafter, although an Example and a comparative example are given and this invention is explained in full detail, this invention is not limited by these. In addition,% shown in an Example and a comparative example is the mass%.

<Examples 1-6, Comparative Examples 1-6 (lipstick)>
<Preparation method>
After components 1-9 are uniformly dissolved and mixed, components 10-14 are added and kneaded to obtain a semi-finished product. The semi-finished product is deaerated and then filled into a container to obtain the desired lipstick. The filling was carried out by directly filling the oily cosmetic in a container equipped with a resin capsule, cooling, and then removing the capsule to obtain a rod-shaped cosmetic. The obtained stick-shaped lipstick was evaluated by the following evaluation method. The results are shown in Table 1. The silica used in Table 1 has a particle diameter of 10 μm.

<Evaluation method>
(Filling formability)
The release properties of the capsules during molding were visually observed. Furthermore, it was visually observed whether the lipstick collapsed or torn off when it was extended or lowered, and judged according to the following criteria.
A: Can be completely released from the capsule, and release properties during molding, no collapse or tearing during feeding and lowering do not occur.
◯: There is a little adhesion to the capsule, but there is no mold release during molding, no collapse or tearing during feeding and lowering.
X: The releasability during molding was poor, and collapsed during tearing and tearing occurred.

(Use test)
Twenty female panelists applied examples and comparative examples, and the following items were evaluated on a four-point scale from 4 to 1, and the higher the score, the better.
・ Folding during use ・ Softness during application ・ Elongation and gloss during application

And in the average score given by 20 people,
A: 4.0 to 3.5 or more B: Less than 3.5 to 2.5 or more Δ: Less than 2.5 to 1.5 or more x: Judged according to criteria of less than 1.5.

(Shrinkage factor)
An oily cosmetic is poured into a 27 mm square and 5 mm deep mold, left at room temperature (25 ° C.) for about 2 minutes, and then cooled and solidified in a freezer (−15 ° C.) for 15 minutes. The vertical and horizontal dimensions when taken out are measured, and the area ratio is calculated by the following formula.
Shrinkage rate = [(Area of mold -Area of cosmetic after cooling) / (Area of mold)] × 100 (%)

From the results in Table 1, it is clear that the rod-like oily cosmetic of the present invention has excellent performance in both the feeling of use and moldability of the cosmetic. On the other hand, the rod-like oily cosmetic of the comparative example in which any of the total amount of wax, the content of hydrogenated polyisobutene, and the shrinkage ratio of the oily cosmetic is outside the scope of the present invention is either in use feeling or moldability. It is inferior and suitable cosmetics cannot be obtained.

Cosmetics of the present invention include lipstick, lip balm, foundation, eye color, eyebrow, eyeliner, eye shadow, mascara, concealer, sunscreen agent, makeup base material, hair cosmetics (blush color, pomade, etc.), antiperspirant It can be used as various cosmetics such as agents and hair removal agents.

Claims (8)

Filled directly with oily cosmetics containing 9-13% by weight of wax, 10-30% by weight of hydrogenated polyisobutene, and shrinkage of 1.5-2.5 when solidified in a 27 mm square metal mold A rod-like oily cosmetic characterized by being filled in a container. Furthermore, the stick-like oily cosmetics of Claim 1 containing a silicic acid anhydride. The rod-like oily cosmetic according to claim 2, wherein the content of silicic anhydride is 4 to 10% by mass. The container directly filled with the oily cosmetic is a stick-shaped container directly filled with the oil-based cosmetic, a container in which a resin capsule is attached and the capsule is released after the oily cosmetic is filled in the container, or a stick-shaped back-filled container The rod-like oily cosmetic composition according to claim 1, 2, or 3. The total amount of wax is 9 to 13% by mass, hydrogenated polyisobutene is contained in an amount of 10 to 30% by mass,
A step (1) of preparing a cosmetic composition having an oily cosmetic shrinkage of 1.5 to 2.5 when solidified in a 27 mm square metal mold, and
Step (2) of directly filling the cosmetic composition obtained in the step (1) into a filling container
A method for producing a rod-like oily cosmetic, comprising: Furthermore, the manufacturing method of the rod-shaped oily cosmetics of Claim 5 containing a silicic acid anhydride. The method for producing a rod-like oily cosmetic according to claim 6, wherein the content of silicic anhydride is 4 to 10% by mass. The container directly filled with the oily cosmetic is a stick-shaped container directly filled with the oil-based cosmetic, a container in which a resin capsule is attached and the capsule is released after the oily cosmetic is filled in the container, or a stick-shaped back-filled container The rod-like oily cosmetic according to claim 5, 6 or 7.