JPH04257513A - Deodorant - Google Patents

Abstract

PURPOSE:To provide a deodorant for effectively eliminating unpleasant body odor such as armpit smell, foot smell and sweat smell and capable of eliminating even the smell component in sebum to which conventional deodorant has insufficient elimination effect. CONSTITUTION:The objective deodorant having excellent deodorizing effect and useful especially for the elimination of body odor can be produced by compounding (A) preferably 0.1-30wt.% of powder of an oil-absorbing polymer such as an acrylate copolymer composed of the structural unit of formula I and formula II (R is 1-30C straight or branched-chain alkyl or alkylene), a porous vinyl polymer produced by polymerizing and poromerizing one or more vinyl monomers having a solubility parameter of 7-10 and preferably capable of absorbing >=1.5 times weight of squalane, as essential component and preferably further (B) preferably 0.05-30wt.% of an insoluble metal oxide such as zinc oxide, magnesium oxide, calcium oxide, titanium oxide and alumina to further improve the deodorizing effect. The weight ratio of A:B is preferably 1:20 to 20:1.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a new deodorant, and more particularly to a deodorant that can effectively eliminate unpleasant body odor.

0002

BACKGROUND OF THE INVENTION Body odor such as armpit odor, foot odor, sweat odor, etc. is an unpleasant odor and is a great problem for those who have it.

[0003] Substances that cause unpleasant body odor include various substances such as lower fatty acids such as acetic acid, butyric acid, propionic acid, and isovaleric acid, and steroids. Methods for eliminating the odors of these substances include methods that utilize physical adsorption with porous materials such as activated carbon, sensory deodorization methods such as masking with fragrances, and methods that utilize metals such as zinc oxide, magnesium oxide, titanium oxide, and alumina. Method using oxides etc. (Special Publication No. 1-493
Publication No. 72) etc.

0004

[Problems to be Solved by the Invention] However, physical deodorizing methods using activated carbon etc. do not have sufficient adsorption capacity for lower fatty acids, and there are also problems in terms of usability and sustainability.
Sensory deodorization such as masking with perfumes changes the quality of malodors using perfumes, but since the malodors themselves still exist, there is a limit to the deodorizing effect. On the other hand, metal oxides such as zinc oxide, magnesium oxide, titanium oxide, and alumina have a deodorizing effect on lower fatty acids, but these are not satisfactory. The reason for this is thought to be as follows. In other words, the skin surface contains a mixture of sebum and sweat.
When a metal oxide is applied here, the surface of the metal oxide easily absorbs water and therefore easily gets wet with sweat, making it difficult for the metal oxide to come into contact with sebum. Therefore, although the causative substances in sweat can be eliminated, the oil-soluble causative substances in sebum remain unerased, and the deodorizing effect as a whole is considered to be incomplete.

[0005]

[Means for Solving the Problems] In view of the above-mentioned circumstances, the present inventors have conducted extensive research on substances that remove odor-causing substances from sebum, and have found that oil-absorbing polymer powder is extremely effective. They found this and completed the present invention.

That is, the present invention provides a deodorant characterized by containing oil-absorbing polymer powder.

[0007] As the oil-absorbing polymer powder used in the present invention, for example, the following general formulas (1) and (2) are used.

Acrylate copolymer having a structural unit represented by [Chemical formula 1]; a porous vinyl polymer obtained by polymerizing and making porous one or more vinyl monomers having a solubility parameter of 7 to 10 -316715)
etc. Among them, a typical acrylate copolymer is POLYT manufactured by Dow Corning.
There is RAP. These oil-absorbing polymer powders weigh 1.
One that can absorb 5 times or more squalane is preferred. Here, the oil absorption is determined using squalane and is determined by JIS K510.
1 (1978). Specifically, 1 g of powder was placed in a 50 ml beaker, and squalane was added dropwise little by little while kneaded with a spatula. The end point is when the powder becomes completely paste-like, and it refers to the weight (g) of squalane required per 100 g of powder. These oil-absorbing polymers are preferably contained in the deodorant of the present invention in an amount of 0.1 to 30% by weight (hereinafter simply referred to as "%").

[0008] The deodorizing effect of the present deodorant can be improved by further adding an insoluble metal oxide. Examples of the metal oxide used here include zinc oxide, magnesium oxide, calcium oxide, titanium oxide, alumina, etc., and these may be used alone or in a mixture of two or more. The amount of these metal oxides is 0.05
It is preferable to set it to 30%.

[0009] The blending ratio (weight) of oil-absorbing polymer powder and metal oxide can be arbitrarily changed depending on the form of the product, but from the viewpoint of deodorizing effect, it is preferably 1:20 to 20:1.

[0010] The deodorant of the present invention may further contain conventionally known optional ingredients. Examples of this component include antiperspirants such as aluminum hydroxychloride and tannic acid, disinfectants such as trichlorohydroxydiphenyl ether (triclosan) and tochlorocarbanilide, and masking agents with arbitrary fragrances. Oils, surfactants, preservatives, saccharides, anti-inflammatory agents, thickeners, pigments, humectants, and the like can be appropriately incorporated within the range that does not impair the effects of the present invention.

[0011] The usage form of the deodorant of the present invention is not particularly limited, and may include lotions, aerosols, roll-ons, powders, sticks, creams, and the like.

0012

[Effects of the Invention] The deodorant of the present invention has an excellent deodorizing effect because it removes odor components in sebum that could not be sufficiently eliminated by conventional deodorants, and is particularly useful for removing body odor. be.

[0013]

[Examples] The present invention will be explained in more detail with reference to Examples, but the present invention is not limited thereto. The deodorization test in this example was conducted using the following test method.

[0014] Deodorizing test method: Deodorizing agents having the compositions shown in each example were produced. Next, healthy men (20 to 40 years old) with strong armpit odor were selected through sensory evaluation by an expert panel, and the above deodorant was evaluated. The deodorant was directly applied by roll-on or spray to one axillary area once each day in the morning and once in the afternoon. The axillary area on the side to which no application was applied was used as a control. The evaluation was conducted by four expert panelists, and the results are shown in each example.

Example 1 Aluminum hydroxychloride
2.8% halocarban
0.1% isopropyl myristate ester
0.7% trioleyl phosphate ester
1.
0% absolute ethanol
29.
7% Freon 12
42
．． 0% Freon 11
2
2.0% magnesium oxide
0
．． 2% porous vinyl polymer
1.5%
(Synthesis Example 1 of JP-A No. 63-316715) ────
──────────────────────────
── Total

When a deodorization test was conducted according to the method described above using the 100.0% spray, the odor intensity at the test site was significantly reduced compared to the control site at a risk rate of 5%.

Example 2 Talc
80
．． 0% zinc oxide

15.0% acrylate copolymer
5.
0% (Dow Corning POLYTR
AP Q5-6603) ──────────────
────────────────────
total
100.0% A deodorization test was conducted using the above powder according to the method described above, and the odor intensity at the test site was found to be at a risk rate of 5 compared to the control site.
% significantly decreased.

Example 3 Halocarban
0.2
% Sodium palmitate
11.5%
dipropylene glycol
29.0% absolute ethanol
54.8% water

3.5
% magnesium oxide
0.5%
porous vinyl polymer
0.5% (Synthesis Example 1 of JP-A-63-316715)────────
────────────────────────
total
100
．． When a deodorization test was conducted according to the method described above using the above spray, the odor intensity at the test site was significantly reduced compared to the control site at a risk rate of 5%.

Claims (3)

[Claims] 1. A deodorant characterized by containing oil-absorbing polymer powder. [Claim 2] The content of oil-absorbing polymer powder is 0.1.
The deodorant according to claim 1, wherein the amount is 30% by weight. 3. A deodorant characterized by containing an oil-absorbing polymer powder and an insoluble metal oxide.