JPS6016909A - Water-based cosmetic - Google Patents

Abstract

PURPOSE:To provide a gelatinous or solid water-based cosmetic containing the monomer and the dimer of the condensation product of an aromatic aldehyde and a polyhydric alcohol at a specific ratio, and having novel form and excellent storage stability. CONSTITUTION:The water-based cosmetic containing the compound of formula I and the compound of formula II (R is H, carboxyl, 1-3C alkyl or alkoxy; n is 1 or 2) at a weight ratio of 90:10-10:90, preferably 75:25-25:75. Although the cosmetic can take various forms from fluid or nonfluid gel to solid, however, an O/W-type emulsion or a clear solubilized product has especially unique appearance compared with conventional cosmetics, and above all, a stick-shaped product has high commercial value. The sum of the compounds of formula I and formula II is 0.1-20wt% based on the product as a whole, and the product may be incorporated further with a water-soluble polymer, oil, preservative, sequestering agent, flavor, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water-based cosmetic, and more particularly to a gel-like or solid-based water-based cosmetic.

Conventionally, natural or synthetic water-soluble polymer adducts have been known as water-based gelling agents. However, in order to solidify water, the concentration of water-soluble polymers must be quite high - and even if it can be solidified, it must be strong enough to bend so that it can be used as a stick cosmetic such as lipstick. This is difficult, and for this reason, there are currently no water-based stick cosmetics available.

The present inventors conducted extensive research on gelling agents for obtaining the above-mentioned gel-like or solid water-based cosmetics. When combined, it is possible to gel water well, and has a novel form and excellent storage stability. HH (1) formula (II) formula (wherein, R is hydrogen atom, carboxyl group, carbon number 1-3
represents an atom or group selected from an alkyl group, an alkoxy group whose alkyl moiety has 1 to 3 carbon atoms, and n is 1 or 2.
indicates an integer. ) (hereinafter blank) The compound represented by the formula (Ij) used in the present invention and (I
f) The compound represented by the formula is an aromatic aldehyde and has 5 carbon atoms.
and 6 with a polyhydric alcohol, the condensate represented by formula (I) is a mono-form, and the condensate represented by formula (Il) is a di-form. Hereinafter, the compound represented by formula (I) will be described as a monomer,
The compound represented by the formula (■) is called a di-form.

Dibenzylidene-D-sorbitol is a typical example of the above-mentioned di-isomer and is conventionally known as an oil-soluble gelling agent.

The present inventors have made it possible to gel water≠ by combining such di-bodies and mono-bodies at a specific thread ratio, and as a result, they have created gel-like or solid-type products that are not found in conventional water-based cosmetics. This led to the completion of water-based cosmetics.

The blending amount of the above-mentioned mono- and di-forms is 0.1% by weight (hereinafter referred to as
(simply referred to as %) to 20%, but the ratio of mono-isomer to di-isomer is 90:10 to 10:90 (weight ratio),
More preferably '75: 25 to 25: '75
(weight ratio). The lower the proportion of di-isomer, the better the transparency of the system tends to be.

The aqueous cosmetic of the present invention is a cosmetic containing water,
The dosage form does not matter. That is, transparent solubilized systems, emulsions,
A variety of formulations can be used, including emulsion systems such as creams (water-in-oil type, oil-in-water type), or powder dispersion systems in which powder is further dispersed in these emulsions.

The water content is generally 5 to 5% of the total amount of the water-based cosmetic of the present invention.
It is 99.9%.

In addition, the product shape can take a wide range of shapes, from fluid gel-like products to immobile gel-like products to solid products. In the case of gel-like products, they can be filled into tube containers, cream containers, etc. If it is in solid form, it can be molded into a strip, or filled into a medium dish.

Among these various dosage forms and product shapes, oil-in-water emulsion systems and transparent solubilized systems are more novel in form than conventional cosmetics. It has a high commercial value as it has a shape that has never existed before.

The above-mentioned mono- and di-forms can be incorporated into the aqueous cosmetics of the present invention as they are within the specified proportions and amounts, but N-methylpyrrolidone, N,N-dimethylacetamide, cyclohexanone, morpholine, etc. It can be further easily dissolved by pre-dissolving it in a co-solvent and then adding it to the water-based cosmetic.

In addition to the above-mentioned essential components, the aqueous cosmetic of the present invention may optionally contain synthetic water-soluble polymers such as polyvinyl alcohol, carboxyvinyl polymers, cellulose derivatives, natural water-soluble polymers such as gum arabic, M content, Preservatives, bactericidal agents, sequestrants, perfumes, ultraviolet absorbers, dyes, pigments, powders, humectants, and other substances must be present.

Next, the present invention will be explained in more detail with reference to Examples. The present invention is not limited thereby.

Example 1 The ingredients shown in Table 1 were mixed, heated to 70°C, dissolved, and then placed in a wide-mouthed bottle and cooled to 30'C. Table 1 shows the hardness of the gel obtained.

Examples 1 to 9 produced good gels and hardness, whereas Comparative Examples 1 and 2, which contained only mono- or di-forms, did not produce good gels. 6φ rising speed 2c
m/nunX2 Does not gel Sorbitol (di-isomer) 2 Dye Appropriate amount Preservative Flavor Purified water in which polyvinyl alcohol and glycerin have been dissolved is heated to 60-706C, and the mono-isomer and di-isomer are added thereto and dissolved. After dissolving the dye, preservative, and fragrance, the solution was poured into a predetermined container and solidified by cooling. The transparent water-based lipstick thus obtained was a completely new type of lipstick, and compared to conventional oil-based lipsticks, it was non-sticky, easy to use, and had a transparent appearance. (Example 11) Purification of gel-like lotion Water to IOQ% Ethanol 10 PEG-(500” Glycerin monobenzylidene xylitol (mono form) 0.9 dibenzylidene-D-sorbitol (di form) O,1LPO
E (20 mol) Sorbitan monolaurate 1 Fragrance 01 Dye 001 Preservative, UV absorber Appropriate amount Ethanol, PKG-1500, Glycerin, POE (
Dissolve sorbitan monolaurate (20 moles), heat purified water to 50-60°C, add and dissolve G-mono-isomer and di-isomer, and add fragrances, dyes, preservatives, and ultraviolet absorbers to this. After dissolving, the mixture was poured into a predetermined container G and cooled and solidified. The resulting gel-like lotion (well, a type of lotion that had never existed before) was easy to apply and convenient to carry.

1-1 (Example) 2) Water-soluble pomade purification Water to 100% Liquid paraffin 5 Olive oil 3 POE cetyl ether 10 F'EG-15005 1,000 nobenzylidene arabitol (mono form) 1, dibenzylidene arabitol (di form) 2N-methylpyrrolidone
6 Fragrance Appropriate amount Dye Preservative, antioxidant Dissolve POE cetyl ether in purified water, and add oil,
Dissolve other ingredients. N-methylpyrrolidone in which the mono- and di-isomers were dissolved was added at 60"C and solidified by cooling. The water-soluble pomade thus obtained has better transparency than conventional pomades and can be used in a wide temperature range. It was stable.

? 8111] RGO-IG909 (4) (Example) 3
) Cream shampoo lauryl jetanolamide 5 Glycerin z5 1.3 butylene glycol a5 Ethylene glycol heptanostearate 3N-
Methylpyrrolidone 3 Mono(methylbenzylidene)-D-sorbitol (mono form) 0.2 Di(methylbenzylidene)-D-sorbitol (di form) 0.1 Purified water to 100 Dyes, fragrances, preservatives, sequestering agents N-methylpyrrolidone with appropriate amount of mono- and di-isomer dissolved at 60-70°
After adding and dissolving in purified water at step C, other components are added and dissolved.

The cream shampoo obtained by cooling this was excellent in stability over time and had a good feel on use.

3 (Example 14) O/W emulsified lipstick purified water to 100% Monobenzylidene-D-sorbitol (mono form) 5 Dibenzylidene-D-sorbitol (di form) 5PLcG-
15003 K O)T □, 5 Stearic acid z5 Cetyl alcohol L5 Liquid paraffin 8 POK monooleic acid ester 1 Pigment 4 Shoulder prevention agent Dissolve an appropriate amount of PFtG-1500, KOH, % / body, di body in perfume purified water, Keep at 70°C (aqueous phase). Mix other ingredients and heat to 7°C (oil phase). The oil phase was added to the water phase and the mixture was uniformly emulsified, then poured into a container and cooled to solidify. The resulting lipstick is a completely new type of lipstick that contains oil in its inner phase and water-based outer phase, and is non-sticky and easy to use.

4 (Example 15) O/W type emulsion purified water to 100% Propylene glycol 5 Morpholine 2 Monobenzylidene-D-sorbitol (mono form) 0.
1 Dibenzylidene-D-sorbitol (di form) α9 Squalane 3 Stearic acid 1.5 Cetyl alcohol 05 Beeswax 2 POE sorbitan monooleate 1 Glyceryl monostearate (self $17 [J
) 1 Fragrance Add an appropriate amount of preservative propylene glycol and morpholine in which mono- and di-forms are dissolved to purified water and heat to 70°C (aqueous phase). Mix other residues and heat to 70'C (oil phase).

The oil phase was added to the water phase and the mixture was uniformly emulsified, followed by cooling with stirring. The resulting emulsion has better release stability and ease of use over time than conventional ones.

Claims (1)

[Claims] 1. An aqueous system containing one or more compounds represented by formula (1) and one or more compounds represented by formula (II) Cosmetics. HH (1) Formula (II) Formula C In the formula, R is a hydrogen atom, a carboxyl group, and a carbon number of 1 to 3
represents an atom or group selected from an alkyl group, an alkoxy group whose alkyl moiety has 1 to 3 carbon atoms, and n is 1 or 2.
indicates an integer. )2, one or more compounds represented by formula (I) and (II) in a ratio of 90:10 to 10
: 90 (weight ratio) of the water-based cosmetic according to claim 1, which is 0 (hereinafter referred to as the margin)