JP7327751B2 - Carrier for holding cosmetics, and cosmetics - Google Patents

Description

TECHNICAL FIELD The present invention relates to a carrier for holding cosmetics used for impregnating and holding cosmetics.

In recent years, cosmetics containing liquid cosmetics such as foundation in cosmetic containers such as compacts have been on the market. The cosmetic container described above has a container body and a lid, and the container body contains a cosmetic-containing carrier impregnated with a liquid cosmetic. This cosmetic-containing carrier is obtained by impregnating a cosmetic-holding carrier used for holding a cosmetic with a liquid cosmetic. The carrier for holding the cosmetic is a polyurethane-based or rubber-based carrier from the viewpoint of stably retaining the cosmetic when it is impregnated with the cosmetic, impregnating the cosmetic with the cosmetic, and improving the cushioning property when the cosmetic is removed. , non-woven fabric, etc. (see, for example, Patent Document 1).

Japanese Patent Publication No. 2017-533196

However, cosmetics containing a cosmetic-containing carrier impregnated with a liquid cosmetic as described above in a cosmetic container such as a compact are different from cosmetics containing the liquid cosmetic (as is) in a cosmetic container such as a bottle or tube. In comparison, the risk of contamination such as bacteria and mold is high, and consumers are beginning to worry about hygiene. However, an antibacterial agent of an organozinc complex such as ZPT (zinc pyrithione), which is used for antibacterial treatment of conventional carriers for holding cosmetics (before being impregnated with a liquid cosmetic), is an elution type antibacterial agent. Therefore, the antibacterial agent eluted from the cosmetic-containing carrier (cosmetics-holding carrier) may mix with the cosmetic, adversely affecting the skin of the user applying the cosmetic, and the antibacterial effect does not last. Accordingly, there is a demand for a cosmetic-retaining carrier that does not elute an antibacterial agent from the cosmetic-retaining carrier and has a sustained antibacterial effect (including an antifungal effect).

An object of the present invention is to solve the above-mentioned problems, and to provide a cosmetic-retaining carrier that does not elute the antibacterial agent and maintains the antibacterial effect.

In order to solve the above problems, a cosmetic-holding carrier according to a first aspect of the present invention is a cosmetic-holding carrier used for impregnating and holding a cosmetic, wherein the cosmetic-holding carrier has a conjugate fiber and a polyester fiber as constituent fibers, and the conjugate fiber is a core-sheath type conjugate fiber using two types of resins with different melting temperatures, and the resin with a high melting temperature used in the core portion is a thermoplastic The resin having a low melting temperature used for the sheath portion is polyester or a thermoplastic polyester-based elastomer, and the carrier for holding the cosmetic material melts the resin having a low melting temperature to form contact portions between constituent fibers. and a quaternary ammonium salt-based silane coupling agent as an insoluble antibacterial agent is fixed to the surface of the constituent fibers, and the quaternary ammonium salt The system is characterized in that the silane coupling agent is 3-trimethoxysilylpropyloctadecyldimethylammonium chloride.

In this carrier for holding cosmetics, the antibacterial agent preferably contains a silane coupling agent.

In this carrier for holding cosmetics, the silane coupling agent is preferably a quaternary ammonium salt-based silane coupling agent.

（式（１）において、ｎは、１～４の整数を示す。ｍは、１～１０の整数を示す。ｐは、１０～２２の整数を示す。ｑは、１～３の整数を示す。）In this carrier for holding cosmetics, the quaternary ammonium salt-based silane coupling agent is preferably represented by the following formula (1).

(In formula (1), n represents an integer of 1 to 4; m represents an integer of 1 to 10; p represents an integer of 10 to 22; q represents an integer of 1 to 3 .)

In this carrier for holding cosmetics, the quaternary ammonium salt-based silane coupling agent is preferably 3-trimethoxysilylpropyloctadecyldimethylammonium chloride.

In this carrier for holding a cosmetic, the ratio of the antibacterial component of the quaternary ammonium salt-based silane coupling agent after coating to the weight of the carrier for holding cosmetic before coating with the quaternary ammonium salt-based silane coupling agent The antibacterial agent fixation concentration, which is a percentage by weight, is preferably 0.5% or more.

A cosmetic according to a second aspect of the present invention is a cosmetic comprising a cosmetic-containing carrier in which a cosmetic is contained in a cosmetic-holding carrier, and a container for housing the cosmetic-containing carrier, wherein The support for the device has a conjugate fiber and a polyester fiber as constituent fibers, and the conjugate fiber is a core-sheath type conjugate fiber using two types of resins with different melting temperatures, and the resin with a high melting temperature used in the core portion is The resin having a low melting temperature used for the sheath portion is a thermoplastic polyester, and the resin having a low melting temperature is a polyester or a thermoplastic polyester-based elastomer . It has a three-dimensional structure in which the contact part is fused, and a quaternary ammonium salt-based silane coupling agent is fixed to the surface of the constituent fiber as an insoluble antibacterial agent, and the quaternary The ammonium salt-based silane coupling agent is 3-trimethoxysilylpropyloctadecyldimethylammonium chloride.

In this cosmetic product, the antibacterial agent preferably contains a silane coupling agent.

In this cosmetic product, the silane coupling agent is preferably a quaternary ammonium salt-based silane coupling agent.

In this cosmetic product, the quaternary ammonium salt-based silane coupling agent is preferably represented by the above formula (1).

In this cosmetic, the quaternary ammonium salt-based silane coupling agent is preferably 3-trimethoxysilylpropyloctadecyldimethylammonium chloride.

In this cosmetic, the ratio of the weight of the antibacterial component of the quaternary ammonium salt-based silane coupling agent after coating to the weight of the cosmetic holding carrier before coating with the quaternary ammonium salt-based silane coupling agent It is preferred that a given antimicrobial agent fixation concentration be 0.5% or greater.

According to the cosmetic-retaining carrier according to the first aspect of the present invention and the cosmetic according to the second aspect, the cosmetic-retaining carrier is coated with an insoluble antibacterial agent, so that the cosmetic can be retained. It is possible to prevent the antibacterial agent from eluting from the carrier for use. Therefore, it is possible to prevent the eluted antibacterial agent from mixing with the cosmetic and adversely affecting the user's skin to which the cosmetic is applied.

FIG. 4 is a diagram showing halo test results for test pieces of Examples 4 and 5 of the carrier for holding cosmetics according to one embodiment of the present invention. Table summarizing the results of the antibacterial test, antifungal property test, and halo test on the test pieces of Examples 1 to 5 of the carrier for holding the same cosmetic.

Hereinafter, a carrier for holding cosmetics and cosmetics according to embodiments embodying the present invention will be described.

The carrier for holding cosmetics of the present invention is used for impregnating and holding cosmetics. This cosmetic-holding carrier is coated with an insoluble antibacterial agent.

(Carrier for holding cosmetics)
The material (substrate) of the carrier for holding cosmetics of the present invention includes foams such as polyethylene foam, polyurethane foam and rubber foam, and various fibers (especially chemical fibers, synthetic fibers and composite fibers). A sponge can be used. However, the carrier for holding cosmetics of the present invention is not limited to the above examples.

Among the various types of sponges mentioned above, from the perspective of efficiently extracting cosmetics that have been taken in, we have adopted a so-called "three-dimensional structure" in which the constituent fibers have a jungle shim-like structure. preferably. This "three-dimensional structure" contains composite fibers as constituent fibers, and the composite fibers contain two types of resins with different melting temperatures. By melting the resin, the contact portions between the constituent fibers are fused.

Examples of conjugate fibers used as constituent fibers of the three-dimensional structure include core-sheath type conjugate fibers, side-by-side type conjugate fibers, islands-in-sea type conjugate fibers, and the like. Among these conjugate fibers, core-sheath type conjugate fibers are preferable from the viewpoint of efficiently integrating the contact portions of the constituent fibers. is preferred.

In the above-described core-sheath type conjugate fiber, from the viewpoint of firmly integrating the contact portions of the constituent fibers with the resin having the lower melting temperature, the resin having the higher melting temperature is used as the core component, and the sheath component is used. Therefore, it is desirable to use the resin with the lower melting temperature.

Of the two types of resin contained in the composite fiber of the three-dimensional three-dimensional structure, examples of the resin having a lower melting temperature include polyester and thermoplastic elastomers. Specific examples of polyesters include polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polyhexamethylene terephthalate, and polytetramethylene terephthalate. Examples of thermoplastic elastomers include polyester-based elastomers such as polyethylene terephthalate-based elastomers, and polyether-ester block copolymers having polyester as a hard segment and poly(alkylene oxide) glycol as a soft segment.

Among the two types of resins contained in the conjugate fiber of the three-dimensional structure, examples of resins having a higher melting temperature include thermoplastic polyesters. Examples of thermoplastic polyesters include polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polyhexamethylene terephthalate, and polytetramethylene terephthalate.

(Antibacterial agent)
The antibacterial agent coated on the carrier for holding cosmetics of the present invention is an insoluble antibacterial agent. As this antibacterial agent, for example, one containing a silane coupling agent can be used. Here, the silane coupling agent is a general term for compounds (reactive silanes) that contain silicon and react with (bond to) both organic and inorganic substances. The silane coupling agent used as the antibacterial agent of the present invention can be considered as a compound of a normal silane coupling agent (used for adhesive applications) and some antibacterial agent. By coating the carrier for holding cosmetics with an antibacterial agent containing a silane coupling agent, the antibacterial agent can be stably fixed to the carrier for holding cosmetics, so that the antibacterial agent is eluted from the carrier for holding cosmetics. It is possible to maintain the antibacterial effect without In addition, it is possible to prevent the eluted antibacterial agent from mixing with the cosmetic and adversely affecting the user's skin to which the cosmetic is applied. The silane coupling agent used in the antibacterial agent of the present invention is, for example, a compound of trialkoxysilane (mainly trimethoxysilane) and some antibacterial agent.

Specific examples of the silane coupling agent used in the antibacterial agent of the present invention include quaternary ammonium salt-based silane coupling agents. This quaternary ammonium salt-based silane coupling agent is a chemical bond between a quaternary ammonium cation and a reactive silyl group. Here, since a quaternary ammonium salt generally has properties as an antibacterial agent having both an antibacterial effect and an antifungal effect, by coating a quaternary ammonium salt-based silane coupling agent on a carrier for holding a cosmetic, Antibacterial and antifungal effects can be sustained.

（式（１）において、ｎは、１～４の整数を示す。ｍは、１～１０の整数を示す。ｐは、１０～２２の整数を示す。ｑは、１～３の整数を示す。）Specific examples of the quaternary ammonium salt-based silane coupling agent include those represented by the following formula (1).

(In formula (1), n represents an integer of 1 to 4; m represents an integer of 1 to 10; p represents an integer of 10 to 22; q represents an integer of 1 to 3 .)

Here, the following two antibacterial mechanisms are presumed in the compound represented by the above formula (1). First, bacteria are attracted to this compound by the quaternary ammonium cation contained in the above compound, and the linear alkyl group (C _p H _2p+1 ) contained in this compound disrupts the bacterial cell membrane. antibacterial mechanism. The second is that the quaternary ammonium cation contained in the compound of formula (1) collects negative ions in the bacterial cell membrane that is in contact with this compound, which destabilizes the opposite side of the cell membrane and causes the bacteria cell membrane is destroyed.

Among the compounds represented by formula (1) above, preferred compounds are represented by formula (2). This compound is the compound of formula (1) with n=1, m=3, p=18 and q=1. This compound is 3-trimethoxysilylpropyloctadecyldimethylammonium chloride and has antibacterial and antifungal properties.

Although the details will be described later, in the carrier for holding cosmetics of the present invention, the antibacterial agent fixation concentration of the quaternary ammonium salt-based silane coupling agent represented by the above formulas (1) and (2) is 0.5. It is preferably 5% or more, more preferably 0.7% or more, and even more preferably 0.9% or more. Here, the antibacterial agent fixing concentration is the antibacterial agent (in this case, the quaternary ammonium salt-based silane coupling agent represented by the formula (1) and the formula (2)) before coating the carrier for holding the cosmetic. is the ratio of the weight of the antibacterial component of the quaternary ammonium salt-based silane coupling agent after coating to the weight of .

(cosmetics)
Cosmetics impregnated in the carrier for holding cosmetics of the present invention include, for example, foundations, makeup bases, eye shadows, eyeliners, mascara, blushes, powders, eyebrows, cleansing creams, cleansing milks, cleansing liquids, face wash creams, Cleansing foam, massage cream, cold cream, vanishing cream, skin cream, skin gel, milky lotion, lotion, serum, various lotions, sunscreen, body cream, body oil, hair shampoo, hair rinse, hair conditioner, hair treatment, Examples include hair liquids and hair tonics.

(Cosmetic-retaining carrier and method for producing a cosmetic-containing carrier)
Next, an example of the method for producing the carrier for holding cosmetics of the present invention will be described. First, the base material (cosmetic holding carrier) such as the above "three-dimensional structure" is immersed in an antibacterial agent such as the above quaternary ammonium salt-based silane coupling agent, and then dehydrated with a wringer. The antibacterial agent is fixed (coated) on the surface of the base material by drying with a dryer or the like. Then, the base material coated with the antibacterial agent is cut into a desired size and shape to obtain a carrier for holding cosmetics. In addition, a cosmetic-containing carrier can be obtained by impregnating the cosmetic-holding carrier with the cosmetic. Furthermore, cosmetics can be obtained by storing this cosmetic-containing carrier in a container having an appropriate size and shape, such as a compact container.

<Example>
The carrier for holding cosmetics of the present invention will be described in more detail below based on examples.

(Method for producing carrier for holding cosmetics of Examples 1 to 5)
The "three-dimensional structure" described above was used as the base material of the carrier for holding cosmetics in Examples 1 to 5. Specifically, a core-sheath type composite fiber [core component: polyethylene terephthalate, sheath component: thermoplastic polyethylene terephthalate, fineness: 6 denier] and polyester fiber (resin: polyethylene terephthalate, fineness: 3 denier) are mixed at a ratio of 40:6. The sheath component was heated and melted while pressing the blended web so that the fibers were parallel to each other at a weight ratio of 0, to prepare a base material for a cosmetic-holding elastic body of a "three-dimensional three-dimensional structure". . By subjecting this to cutting, a three-dimensional structure sheet having a length of 340 mm, a width of 460 mm, a thickness of 11 mm, and a basis weight (weight per unit area) of 180 g/m ² was obtained.

In Examples 1 to 5 shown in Table 1 below, the fixation rate (fixation concentration) (theoretical value) of the antibacterial component (active ingredient in the antibacterial agent undiluted solution) to the sheet of the three-dimensional structure is, respectively, Each of the above sheets was immersed in an antibacterial aqueous solution adjusted to an appropriate (antibacterial aqueous solution) concentration so that the concentrations were 0.5%, 0.7%, 0.9%, 1.0%, and 2.0%. After that, the sheet was dehydrated with a squeezing machine (roll press device) and dried at a temperature of 105° C. for 30 minutes with a shelf dryer to obtain a sheet of a carrier for holding cosmetics of Examples 1 to 5. . The gap between the rollers of the wringer was 0 mm. AEM5700 (manufactured by Microban) was used as the stock solution of the antibacterial agent. This AEM5700 contains 40% of 3-trimethoxysilylpropyloctadecyldimethylammonium chloride, which is a quaternary ammonium salt-based silane coupling agent, as an antimicrobial component (active component). The antibacterial aqueous solution used for the antibacterial treatment was obtained by diluting the above AEM5700 with distilled water.

In Table 1 below, the 0.5% treated product, the 0.7% treated product, the 0.9% treated product, the 1.0% treated product, and the 2.0% treated product each have an antibacterial component adhered. Three-dimensional structure sheets with concentrations of 0.5%, 0.7%, 0.9%, 1.0%, and 2.0% are shown, and the untreated product is the antibacterial component fixing treatment described above. 3 shows a sheet of a three-dimensional structure that has not been subjected to the

In Table 1 above, "antibacterial aqueous solution concentration (%)" is the proportion of the antibacterial agent stock solution in the entire antibacterial aqueous solution obtained by diluting the above antibacterial agent stock solution (AEM5700) with distilled water. That is, antibacterial aqueous solution concentration (%)=(antibacterial agent undiluted solution (g)/(antibacterial agent undiluted solution (g)+distilled water (g)))×100. "Weight before sheet (g)" indicates the weight of each sheet before being immersed in the antibacterial aqueous solution. "Sheet weight after squeezing (g)" indicates the weight of each sheet after dehydrating each sheet immersed in the antibacterial aqueous solution with a squeezing machine. "Amount of antibacterial aqueous solution impregnated into sheet (g)" is the weight of the antibacterial aqueous solution contained in each sheet after dehydration with a squeezer, and from the above "weight of sheet after squeezing (g)" to "weight before sheet (g)" is subtracted. Also, the "antibacterial aqueous solution impregnation rate (%)" is represented by the following formula. That is, the antibacterial aqueous solution impregnation rate (%) = (sheet weight after squeezing (g) - sheet front weight (g)) / sheet front weight (g) x 100. The "fixed concentration to sheet (%)" is the fixed concentration of the antibacterial component to each sheet of Examples 1 to 5, and corresponds to the "fixed antibacterial agent concentration" in the claims. For example, when 0.5 g of the antibacterial component is fixed to a 100 g (three-dimensional structure) sheet, the "fixed concentration (%) to the sheet" is 0.5 (g) ÷ 100 (g) = 0 .005=0.5 (%).

As described above, the amount of the stock solution (the amount of the antibacterial agent stock solution (AEM5700)) required to fix 0.5 g of the antibacterial component is such that the antibacterial component (active ingredient) concentration of this antibacterial agent stock solution is 40%. Therefore, 0.5g/(40/100) = 0.5g x (100/40) = 1.25g.

Next, a method for calculating the "concentration of adhesion to the sheet (%)" using the "antibacterial aqueous solution concentration (%)" and "antibacterial aqueous solution impregnation rate (%)" in Table 1 will be described. The adhesion concentration to each sheet of Examples 1 to 5 is the "antibacterial aqueous solution concentration (%)" and "antibacterial aqueous solution impregnation rate (%)" in Table 1, and the antibacterial component concentration (antibacterial agent stock solution (AEM5700) concentration of the components). That is, "fixing concentration to sheet (%)" = (1) "antibacterial aqueous solution concentration (%)" x (2) "antibacterial aqueous solution impregnation rate (%)" x (3) antibacterial component concentration (%).

Among the determinants of the concentration of adhesion to each sheet described above, (1) "antibacterial aqueous solution concentration (%)" has a correlation with the amount of antibacterial agent stock solution (AEM5700) remaining on the sheet after squeezing (stock solution amount). Yes, it can be obtained by "antibacterial aqueous solution concentration (%)" = undiluted solution amount / "antibacterial aqueous solution impregnation rate (%)". For example, if the "antibacterial aqueous solution concentration (%)" of a sheet with a fixed concentration of 0.5% (0.5% treated product) is 1.25 (g), the amount of undiluted solution remaining on the sheet after squeezing is , from the antibacterial aqueous solution impregnation rate (65%) of the 0.5% treated product shown in Table 1, 1.25 ÷ 65 × 100 = 1.9 (%). In addition, among the determinants of the concentration of adhesion to each sheet, (2) "antibacterial aqueous solution impregnation rate (%)" is the above formula (antibacterial aqueous solution impregnation rate (%) = (sheet weight after squeezing (g) - Weight in front of seat (g))/Weight in front of seat (g) x 100). For example, the antibacterial aqueous solution impregnation rate (%) of the 0.5% treated product in Table 1 = (49.02 (g) - 29.64 (g)) ÷ 29.64 (g) × 100 ≈ 65 (%) be. Among the determinants of the adhesion concentration to each sheet, (3) the concentration of the antibacterial component (concentration of the antibacterial component in the antibacterial agent undiluted solution) is constant (40%).

For example, in the case of the sheet of Example 1 (0.5% treated product) shown in Table 1, as described above, (1) "antibacterial aqueous solution concentration (%)" is 1.9 (%) (= 0.019 ), (2) “antibacterial aqueous solution impregnation rate (%)” is 65 (%) (= 0.65), (3) antibacterial component concentration is 40% (= 0.4). The fixed concentration (of the antimicrobial component) will be 0.019×0.65×0.4≈0.0049≈0.5%.

(Comparative example 1)
As the base material of the cosmetic-holding carrier of Comparative Example 1, the same base material as the base material of the cosmetic-holding carrier of Examples 1 to 5 was used. The sheet of the carrier for holding cosmetics of Comparative Example 1 was also cut into the same size as the sheets of Examples 1-5. However, the sheet of the carrier for holding cosmetics of Comparative Example 1 was not subjected to the antibacterial component fixing treatment.

(Comparative example 2)
As the carrier for holding cosmetics in Comparative Example 2, a standard cloth (white cloth made of 100% cotton) used in general textile product antibacterial tests was used. Similarly to the sheet of Comparative Example 1, the standard cloth of Comparative Example 2 was also cut to the same size as the sheets of Examples 1-5. Also, the standard cloth of Comparative Example 2 was not subjected to the fixing treatment of the antibacterial component.

(Antibacterial test)
An antibacterial test was performed on test pieces (0.4 g) cut from the sheet of Example 1 (0.5% treated product) and the sheet of Example 4 (1.0% treated product) in Table 1. This antibacterial test was performed using the bacterial liquid absorption method among the test methods specified in "JIS L 1902:2015 Antibacterial test method and antibacterial effect of textile products". The bacterium used in the test was Staphylococcus aureus NBRC 12732.

The fungal liquid absorption method used in this test is the most common method in the antibacterial test of textile products, in which a sample is impregnated with a fungal liquid and the change in the number of bacteria after a certain period of time is examined. Specifically, the test was performed in the following procedure.
1. 0.4 g of the test piece was placed in a vial, 0.2 ml of the test bacterial solution was dropped, and then the vial was capped.
2. The vials described above were incubated at 37° C. for 18-24 hours.
3. 20 ml of washing solution was added to wash out the test bacteria from the test piece, and the number of viable bacteria in the washing solution was measured by the pour plate culture method or the luminometric method. Here, the pour plate culture method (colony method) is to quantify the number of bacteria by visually observing colonies formed on an agar medium. In the luminescence measurement method described above, the energy (ATP (adenosine triphosphate) (adenosine triphosphate)) of bacteria is chemically emitted to emit light, and the number of bacteria is quantified based on the intensity of the light. be.
4. The antibacterial activity value was calculated according to the following formula. As a control sample, 0.4 g of the standard cloth (cotton) of Comparative Example 2 was used.
Antibacterial activity value = (Mb-Ma) - (Mc-Mo)

However, in the above formula, Ma is the average value of the common logarithm of the number of viable bacteria immediately after inoculation of the standard cloth (control sample) with the test bacteria solution, and Mb is the common number of viable bacteria after 18 hours of culture of the standard cloth. Average value of logarithmic values, Mo is the average value of the common logarithmic value of the viable cell count immediately after inoculation of the test sample with the test bacterial solution, Mc is the average value of the common logarithmic value of the viable cell count after culturing the test sample for 18 hours indicates

A test piece cut from the sheet of Example 1 (hereinafter abbreviated as "test piece of Example 1") and a test piece cut from the sheet of Example 4 (hereinafter abbreviated as "test piece of Example 4") The results of the antibacterial test for are shown in Table 2 below.

According to the standard of "JIS L 1902", if the antibacterial activity value is 2.0 or more, it is said that there is an antibacterial effect (antibacterial deodorant treatment is applied), so the results of the antibacterial test shown in Table 2 ( antibacterial activity value), confirm that both the test piece of Example 1 (0.5% treated product) and the test piece of Example 4 (1.0% treated product) have an antibacterial effect. was made. Even the test piece of Example 1 (0.5% treated product), which has the lowest fixing concentration among the test pieces of Examples 1 to 5, has an antibacterial effect. As a matter of course, the test pieces 2, 3, and 5 are also presumed to have an antibacterial effect. Therefore, all test pieces of Examples 1 to 5 have an antibacterial effect. The proliferation value P (=2.5) shown in Table 2 above is a value used as a reference value for judging whether or not the product is (has been) bacteriostatically treated. In general, if the antibacterial activity value≧proliferation value P, it is evaluated (determined) that the bacteriostatic treatment has been applied, so the test piece of Example 1 (0.5% treated product) and the test piece of Example 4 ( 1.0% treated product) can be evaluated as having undergone antibacterial finishing. And even the test piece of Example 1 (0.5% treated product), which has the lowest fixing concentration among the test pieces of Examples 1 to 5, can be evaluated as having been subjected to bacteriostatic treatment. Any of the test pieces of Examples 1 to 5 can be evaluated as having undergone bacteriostatic treatment.

(Antifungal test)
Test pieces collected from the sheets of Examples 1 to 4 in Table 1 (hereinafter abbreviated as “test pieces of Examples 1 to 4”) and test pieces collected from the sheet of Comparative Example 1 (hereinafter, “Comparative Example 1 (abbreviated as "test piece") was subjected to an antifungal test. This test was conducted using the absorption method, which is an antifungal property test specified in "JIS L 1921". The type of mold used in the test was Aspergillus niger NBRC 105469.

In this fungal resistance test, a fungal pre-culture was first performed. Specifically, the mold was left in a culture environment at 25°C for 8 days or more. Next, spores were collected from the grown fungi, a fungal test spore suspension was prepared, and this was inoculated into the standard cloth (Comparative Example 2) and the antifungal processed samples (test pieces of Examples 1 to 4). did. Then, ATP (adenosine triphosphate) in the sample immediately after inoculation of the standard cloth (Comparative Example 2) and the antifungal processed sample (test pieces of Examples 1 to 4) and the sample after culturing the mold at 25 ° C. for 42 hours By measuring the amount of acid (multifunctional nucleotide present in living mold cells), the "antifungal activity value" (an index representing antifungal activity) was calculated. A specific formula for calculating the antifungal activity value is as follows. In addition, in the above test, the test piece of Comparative Example 1 was also subjected to the antifungal property test in addition to the test pieces of Examples 1 to 4, which are antifungal processed samples.
Antifungal activity value FS = (Fb-Fa) - (Fc-Fo)

However, in the above formula, Fb is the average value of the common logarithm of the amount of ATP after 42-hour culture of the standard cloth (test piece of Comparative Example 2), Fa is the standard cloth immediately after inoculation of the fungal test spore suspension. , Fc is the average value of the common logarithmic value of the ATP content of the test sample (test pieces of Examples 1 to 4) after 42 hours of culture, Fo is the average value of the common logarithmic value of the ATP content of the test sample. The average value of the common logarithm of the amount of ATP immediately after inoculation of the spore suspension is shown.

Table 3 below shows the results of the antifungal test on the test pieces of Examples 1 to 4 and the test piece of Comparative Example 1.

For the evaluation of the antifungal effect shown in Table 3, the general antifungal effect evaluation criteria shown in "JIS L 1921" (if the antifungal activity value is 2.0 or more, it is considered to have an antifungal effect evaluation criteria) were used. As shown in Table 3, the test piece of Comparative Example 1 (untreated product without antibacterial component fixing treatment) has no antifungal effect, but the test piece of Example 1 (0.5% treated product) ), and the test piece of Example 2 (0.7% treated product) have a weak antifungal effect, and the test piece of Example 3 (0.9% treated product) and the test piece of Example 4 (1 0% treated product) was confirmed to have a strong antifungal effect. The test piece of Example 5 (2.0% treated product) was not subjected to the above antifungal test, but Example 3, which has a lower fixed concentration of the antibacterial component than the test piece of Example 5, And the test piece of Example 4 has a strong antifungal effect, so it can be judged that the test piece of Example 5 also has a strong antifungal effect. Therefore, all test pieces of Examples 1 to 5 have a certain degree of antifungal effect. From the above general antifungal effect evaluation criteria (antifungal activity value of 2.0 or more), if the fixed concentration of the antibacterial component is 0.9% or more, a (strong) antifungal effect is obtained. I can state that there is.

(Halo test (dissolution test of antibacterial agents using the halo method))
From the sheet of Example 4 (1.0% treated product) and the sheet of Example 5 (2.0% treated product) in Table 1, cut a circular test piece 1 having a diameter of 28 mm shown in FIG. Place the piece 1 in the center of the agar plate medium 3 containing Staphylococcus aureus or Aspergillus niger on the Petri dish 2 and culture at 37 ° C. for 24 to 48 hours. Check to see if a zone of inhibition: a clear area without bacterial growth appears. This halo test is usually performed on textile products that have undergone antibacterial processing with high elution of antibacterial agents, and if a halo appears around the test piece after culturing, it is antibacterial agent) is evaluated as having antibacterial properties. However, since the antibacterial agent (3-trimethoxysilylpropyloctadecyldimethylammonium chloride) used in the test pieces of Examples 1 to 5 is a non-eluting antibacterial agent, the halo test is used here as an antibacterial This was done not to evaluate the antibacterial properties of the agent, but to confirm that the antibacterial agent did not elute from the test piece 1.

As a result of the above halo test, as shown in FIG. 1, for both test pieces 1 of Examples 4 and 5, even if the bacteria to be cultured are either Staphylococcus aureus or Aspergillus niger , no halo appeared around test piece 1 after culture (the width of the growth inhibition zone was 0 mm). From these results, it could be confirmed that the antibacterial agent (3-trimethoxysilylpropyloctadecyldimethylammonium chloride) was not eluted from any of the test pieces 1 of Examples 4 and 5.

(Comprehensive consideration of the test results of antibacterial test, antifungal test, and halo test)
FIG. 2 is a table summarizing the test results of the antibacterial test, antifungal test, and halo test (antibacterial agent elution test using the halo method) on the test pieces of Examples 1 to 5 above. . The test results contained in FIG. 2 include not only the actual test results for the test pieces of Examples 1 to 5, but also the test results naturally assumed based on these test results. In FIG. 2, △ in the "antibacterial and antifungal" column indicates that there is an antibacterial effect (the antibacterial activity value is greater than the reference value (2.0)), but the antifungal effect is weak (the antifungal activity value is the reference value ( 2.0)), and ○ in the “antibacterial and antifungal” column indicates that there is also an antibacterial effect (antibacterial activity value is greater than the reference value (2.0)) and a strong antifungal effect (antibacterial The mold activity value is greater than the reference value (2.0)). In addition, ◯ in the "halo test" column indicates that the antibacterial agent was not eluted from the test piece.

From the test results in FIG. 2 above, looking only at the antibacterial effect and the insolubility of the antibacterial agent, sufficient performance can be obtained if the fixed concentration of the antibacterial component is 0.5% or more. In addition to the above point, considering the antifungal effect, it was found that the fixing concentration of the antibacterial component is preferably 0.9% or more.

1 test piece (test piece of a carrier for holding cosmetics coated with an insoluble antibacterial agent)

Claims (4)

A carrier for holding cosmetics used for impregnating and holding cosmetics,
The carrier for holding cosmetics comprises conjugate fibers and polyester fibers as constituent fibers,
The conjugate fiber is a core-sheath type conjugate fiber using two kinds of resins with different melting temperatures, wherein the resin with a high melting temperature used in the core is a thermoplastic polyester, and the resin with a melting temperature used in the sheath is a thermoplastic polyester. low resin is polyester or thermoplastic polyester elastomer,
The carrier for holding cosmetics has a three-dimensional structure in which the contact portions of the constituent fibers are fused by melting the resin having a low melting temperature, and 4 A class ammonium salt-based silane coupling agent is fixed to the surface of the constituent fibers,
A carrier for holding cosmetics , wherein the quaternary ammonium salt-based silane coupling agent is 3-trimethoxysilylpropyloctadecyldimethylammonium chloride . Antibacterial agent fixation, which is the ratio of the weight of the antibacterial component of the quaternary ammonium salt-based silane coupling agent after fixation to the weight of the cosmetic holding carrier before fixation of the quaternary ammonium salt-based silane coupling agent 2. The carrier for holding cosmetics according to claim 1, wherein the concentration is 0.5% or more. a cosmetic-containing carrier in which a cosmetic is contained in a cosmetic-holding carrier;
A cosmetic comprising a container for storing the cosmetic-containing carrier,
The carrier for holding cosmetics comprises conjugate fibers and polyester fibers as constituent fibers,
The conjugate fiber is a core-sheath type conjugate fiber using two kinds of resins with different melting temperatures, wherein the resin with a high melting temperature used in the core is a thermoplastic polyester, and the resin with a melting temperature used in the sheath is a thermoplastic polyester. low resin is polyester or thermoplastic polyester elastomer,
The carrier for holding cosmetics has a three-dimensional structure in which the contact portions of the constituent fibers are fused by melting the resin having a low melting temperature, and 4 A class ammonium salt-based silane coupling agent is fixed to the surface of the constituent fibers,
A cosmetic product, wherein the quaternary ammonium salt-based silane coupling agent is 3-trimethoxysilylpropyloctadecyldimethylammonium chloride. Antibacterial agent fixation, which is the ratio of the weight of the antibacterial component of the quaternary ammonium salt-based silane coupling agent after fixation to the weight of the cosmetic holding carrier before fixation of the quaternary ammonium salt-based silane coupling agent 4. Cosmetics according to claim 3, wherein the concentration is 0.5% or more.

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