JPH04173718A - Transparent film type mascara - Google Patents

Abstract

PURPOSE:To obtain a film type transparent mascara, containing vinylpyrrolidone vinyl acetate copolymer and a carboxyvinyl polymer, and capable of imparting luster and tenseness to eyelashes and improving makeup effects. CONSTITUTION:The objective substance is obtained by including 0.25-8wt.% vinylpyrrolidone vinyl acetate copolymer, 0.1-2wt.% carboxyvinyl polymer, a base (e.g. triethanolamine) in an amount of 0.1-2 times based on the carboxyvinyl polymer, 70-93wt.% water and 5-20wt.% ethanol as essential ingredients, further suitably blending various ingredients normally used in a mascara, stirring and mixing the ingredients and preparing the mascara. The aforementioned mascara assumes a transparent or semitransparent high-viscosity liquid form and is stable to preservation for a long period and capable of lightly spreading and rapidly drying in application to form homogeneous films on eyelashes. Thereby, makeup effects are enhanced.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a transparent film-type mascara, and more specifically, it is applied to the eyelashes or eyebrows to form a transparent film on the hair surface. Adds shine and firmness, and originally
This invention relates to a transparent film-type mascara that can enhance the makeup effect (curling power, setting power) while making use of the natural hue of hair.

[Prior art] Conventional film-type mascara is a turbid liquid whose basic ingredients are colored pigments, film-forming agents, oil, and water. This is applied to the eyelashes, and the eyelashes are colored. The aim has been to not only make the eyelashes look thicker and longer, but also to lift up the eyelashes and give them a curly look, giving the eye area a strong sense of definition.

However, consumers these days are looking for variations in the finish of mascara, and their preferences vary, such as wanting to make their eyelashes look thicker and longer, or wanting a makeup effect but wanting it to look natural.

If you want your eyelashes to look thicker and longer, use a mascara that has more colored pigments or a creamier type that sticks more to the eyelashes and creates a thicker film. The above methods of repeated use (application) are conceivable, but in either case, the finish becomes increasingly unnatural, the usability (spreadability) is poor, the drying time is slow, and the amount of makeup work increases, so these methods are not preferred.

“I want a very natural finish with a makeup effect.”
If you use conventional mascara, it will look like heavy makeup and lack shine, making it look unnatural.

Under these circumstances, there is a need for a mascara that makes use of the natural luster of the eyelashes and provides a very natural finish, while also easily providing a more voluminous finish.

[Problem to be solved by the invention] By applying it to the eyelashes, it forms a transparent film on the hair surface, giving the eyelashes shine and firmness, and making up while taking advantage of the natural hue of the eyelashes. It is an object of the present invention to provide a transparent film-type mascara that can increase effects (curling force, setting force) and also has an auxiliary effect (so-called base effect) to easily obtain a voluminous finish. And so.

[Means for Solving the Problems] In order to solve the above problems, the present inventors have developed v? As a result of extensive research, the present invention was completed.

That is, the present invention is a transparent film-type mascara containing five essential components: a vinylpyrrolidone/vinyl acetate copolymer, a carboxyvinyl polymer, a base, water, and ethanol. The copolymer is 0.25 to 8% by weight of the total amount, the carboxyvinyl polymer is 0.1 to 2% by weight of the total amount, the base is 0.1 to 2 times the amount of the carboxyvinyl polymer, and the water is 0.1 to 2% by weight of the total amount. It is a transparent film-type mascara in which the amount of ethanol is 70 to 93% by weight of the total amount, and the amount of ethanol is 5 to 20% by weight of the total amount.

The present invention will be described in detail below.

The vinylpyrrolidone/vinyl acetate copolymer used in the present invention is a copolymer in which the weight ratio of vinylpyrrolidone to vinyl acetate is approximately 7:3 to 2:8.

If the amount ratio of vinyl pyrrolidone is too high, it is undesirable because it becomes easily soluble in water and falls off with sweat or tears. On the other hand, if the amount of vinyl acetate is too high, it becomes difficult to dissolve in water, making it difficult to apply makeup, which is not preferable.

For actual use, it is convenient to prepare a transparent liquid by dispersing it in ethanol or propylene glycol in advance.

Moreover, commercially available products can also be used as they are.

For example, a 50% solution of a 7:3 copolymer of vinyl pyrrolidone and vinyl acetate in diethyl phthalate denatured alcohol (
Manufactured by BASF, hereinafter abbreviated as Rubiscoll 73E.

) and a 50% solution of a copolymer of vinyl pyrrolidone and vinyl acetate in a ratio of 6:4 in geraniol-modified alcohol (manufactured by BASF, hereinafter abbreviated as Rubiscoll 64E).

The content of the vinyl pyrrolidone/vinyl acetate copolymer is preferably 0.25 to 8% of the total amount, more preferably 0.
．． It is 5 to 5% by weight.

When the concentration is lower than 0.25% by weight, the film strength becomes weak and it becomes difficult to impart curling force or setting force.

In addition, if the concentration is higher than 8% by weight, the odor peculiar to vinylpyrrolidone/vinyl acetate copolymer will cause discomfort, the transparency will be poor, and the viscosity of the transparent film mascara will become too high, making it difficult to apply. Undesirable.

The carboxyvinyl polymer used in the present invention is an acidic polymer compound, which is mainly a polymerized product of acrylic acid, and a commercially available product can be used as is.

For example, Carbo Ball 93 manufactured by Gutdrich (USA)
4, Carpopol 9401 Carbopol 941, etc.

The content of carboxyvinyl polymer is from 0.1 to the total amount.
2% by weight is preferred, and more preferably 13 to 1.5% by weight. When the concentration is lower than 0.1% by weight, it becomes difficult to impart a curly feel. Moreover, if the concentration is higher than 2% by weight, the transparent film-type mascara will spread too easily and become difficult to apply uniformly, such as clumping at the tips of the hair, which is not preferable.

Examples of the base used in the present invention include potassium hydroxide, sodium hydroxide, sodium carbonate, triethanolamine, and arginine.

This base is added to neutralize the aqueous dispersion of carboxyvinyl polymer and to obtain a stable viscosity range.
Preferably pH 4-12, more preferably pH 5-11
The water used in the present invention refers to purified water, and the content is 70 to 93% by weight of the total amount.

Ethanol used in the present invention includes fermented ethanol, synthetic ethanol, denatured ethanol, and the like.

The content of ethanol is preferably 5 to 20% by weight, more preferably 8 to 15% by weight of the total amount.

If the concentration is lower than 5% by weight, the drying time after application of the transparent film-type mascara becomes longer, which is not preferable.

Moreover, if the concentration is higher than 20% by weight, the ethanol volatilizes after applying the transparent film-type mascara, causing strong irritation to the eyes, which is not very preferable.

In addition to the above-mentioned essential components, the transparent film-type mascara of the present invention may contain various components commonly used in mascaras.

For example, ultraviolet protection agents such as microparticle titanium oxide, hair protection agents such as water-soluble silicone oil and keratin powder, humectants such as chitin, chitosan and their derivatives, and polyhydric alcohols, and natural polymers such as sodium carboxymethyl cellulose and xanthanthin gum. compounds, other fragrances, pigments,
Preservatives, antioxidants, or carrot extract, nicotine il! Examples include medicinal ingredients such as tDL-α-tocopherol, bantotenyl ethyl ether, and water-soluble placenta extract, and these can be appropriately blended singly or in combination of two or more.

The transparent film-type mascara of the present invention can be produced by, for example, adding a carboxyvinyl polymer to water and dissolving it, then sequentially adding and mixing a denatured alcohol solution of vinylpyrrolidone/vinyl acetate copolymer and ethanol, and finally adding a base. Alternatively, it can be prepared by adding a base to an aqueous solution of carboxyvinyl polymer, then adding a denatured alcohol solution of vinylpyrrolidone/vinyl acetate copolymer and ethanol and stirring and mixing.

The transparent film-type mascara of the present invention is a transparent or translucent, highly viscous liquid, and is extremely stable even during long-term storage.When applied, it spreads easily and dries quickly. A uniform film is formed on the top, giving shine and firmness, giving a very natural makeup effect (curling power, setting power).

Moreover, the effect lasts for a long time and it is easy to remove makeup.

[Examples] The present invention will be specifically described below with reference to Examples, but the present invention is not limited to these Examples. In addition, the blending amount is in parts by weight.

(The following is a blank space) Example 1.2 Transparent film-type mascara (prescription) Table 1゜ (manufacturing method) At room temperature, while stirring, add ■ to ■ to disperse homogeneously. Add ■, which has been homogeneously dispersed in advance, to this.

While stirring well, gradually add 7 J[] of ■.

This is packed into a container and used as a product.

Next, the product of the present invention is subjected to a sensory test.

<Experimental method and results> (a) Sample Examples 1 and 2 of the present invention and Comparative Example 1 for comparison.
2 (b) Experimental Method Thirty female test subjects were asked to test mascara once every morning for one week, and were asked to self-evaluate the following evaluation items for clothing 2, and the average value was determined.

Drying speed: Dryness after 1 minute after application on the eyelashes Transparency after application: Transparency after 10 minutes after application on the eyelashes Effect as a mascara base: After applying the sample to the eyelashes, apply the following conventional Make-up effect when mascara is applied in layers (Conventional mascara formulation and manufacturing method) Heat (1) and (2) to 80°C, and stir and dissolve each. Add ■ to ■ and emulsify. After cooling, add (■) and mix uniformly to form a product.

Setting: Apply while adjusting the eyelashes (or eyebrows) to your preference. Stability after 5 hours. Curl stability: Stability of curl after 5 hours after application. (C) Evaluation criteria: ◎ for each evaluation item. : Very good ○ : Good ∆ Some problems (d) Results Table 2゜As is clear from Table 2, Examples 1 and 2 of the present invention:
All of them received high ratings, but especially the quick drying.
It can be seen that it has a transparent feel after application, is effective as a mascara base, and is excellent in setting eyelashes.

On the other hand, Comparative Example 1, which does not contain ethanol, dries slowly, resulting in poor scores in terms of uniformity of application and stability of eyelash setting curls. In Comparative Example 2, which contained polyvinyl alcohol instead, the film strength of the eyelashes was weak, so it was found that the effectiveness as a mascara base, the setting of eyelashes, and the stability of curling were inferior.

Example 3 Eyebrow (Prescription) (Manufacturing method) At room temperature, add ■ to ■ while stirring to homogeneously disperse. Add ■, which has been homogeneously dispersed in advance, to this.

While stirring well, gradually add ■.

This is packed into a container and used as a product.

When the product of the present invention was applied to the eyebrows, it could be quickly set while shaping the eyebrows into the desired shape, and the setting effect lasted for a long time.

[Effects of the Invention] When applied to the eyelashes, the transparent film-type mascara of the present invention forms a transparent film on the surface of the eyelashes, giving gloss and firmness to the eyelashes, and making use of the natural hue of the eyelashes. While using it, you can increase the makeup effect (power-luka, setting power), and when using it as a mascara base,
By applying layers of traditional mascara, it's easier than ever to create a voluminous finish.

Furthermore, good results were obtained with cosmetics for eyebrows.

Claims (5)

[Claims] (1) A transparent film-type mascara whose essential components are vinylpyrrolidone/vinyl acetate copolymer, carboxyvinyl polymer, base, water, and ethanol. (2) The transparent film-type mascara according to claim (1), wherein the vinylpyrrolidone/vinyl acetate copolymer is contained in an amount of 0.25 to 8% by weight based on the total amount. (3) Carboxyvinyl polymer is 0.1 to 2 of the total amount
% by weight of the transparent film-type mascara according to claim 1. (4) Base is 0.1 to 2 of carboxyvinyl polymer
The transparent film-type mascara according to claim 1, which is double the amount. (5) Claim (1) wherein water accounts for 70 to 93% by weight of the total amount.
) Transparent film-type mascara described in ). (6) Ethanol is
The transparent film-type mascara according to claim 1, wherein the amount is 5 to 20% by weight of the total amount.