JP2006117622A - Deodorizing composition and method of deodorization - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deodorizing composition for reducing unpleasant specific smell generated by the reaction of a hair-treating agent containing cysteamine and/or its salt with the hair without damaging the effect of the hair-treating agent and without accompanying the damage of the hair and discoloration of dyed hair, and a method of deodorization by the same. <P>SOLUTION: This deodorizing composition for the reaction smell of the cysteamine is characterized by containing an amino-modified silicone and a polyoxyalkylene-modified silicone, adjusted to be pH 2.8-6.8 by ≥1 kind of pH buffering substance consisting of an organic acid and its salt or an inorganic acid and its salt, and having 0.00001-0.08 milli-equivalent range acidity per 1g, and the method of deodorizing the cysteamine reaction smell is provided by applying or spraying the deodorizing composition on the hair. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a composition and method for reducing an unpleasant specific odor generated when a hair treatment agent containing cysteamine and / or a salt thereof reacts with hair.

  Hair treatment agents containing cysteamine and / or its salts are mainly for the purpose of deforming hair, and are effective at low pH compared to conventional permanent and curling agents, and are therefore optimal for damaged and colored hair. Hair treatment agent.

  However, when cysteamine acts on the hair, it produces an unpleasant specific odor not found in conventional reducing agents, ie, thioglycolic acid and its salts, cysteine and its salts or derivatives, and sulfites.

In order to suppress this unpleasant specific odor, a post-treatment agent containing acid of 0.1 to 0.5 milliequivalent per 1 mL of pH 2 to 2.7 is provided (JP-A-3-271214).
However, when this post-treatment agent is applied to damaged hair or colored hair, there are drawbacks that damage increases and the color of the hair dye changes.

  Similarly, a method of treating with a second agent containing hydrogen peroxide has also been proposed (Japanese Patent Application Laid-Open No. 2004-155748), but further accompanied with significant damage and discoloration. In addition, hydrogen peroxide is a permanent wave agent mainly composed of thioglycolic acid and salts thereof, cysteine and salts or derivatives thereof, that is, cysteamine and / or salts thereof can be incorporated only in quasi drugs. It cannot be used for so-called cosmetics such as hair treatment agents and deodorants, and is not practical.

  On the other hand, a cigarette odor deodorant containing a polyoxyalkylene-modified organopolysiloxane at pH 3 to 7 has been proposed (Japanese Patent Laid-Open No. 6-219927). When this deodorant was applied to deodorization of cysteamine reaction odor, no damage or discoloration occurred, but no deodorization effect was obtained.

  In addition, as a deodorant such as human odor, foot odor, body odor and animal odor, water-soluble metal salt 0.03 to 5% by weight, nonionic surfactant 0.01 to 5% by weight, silicone oil 0.1 Compositions containing from 10 to 10% by weight have been proposed (JP 2000-178161). However, this composition was also ineffective in eliminating the cysteamine reaction odor.

  As described above, in these methods, the effect is insufficient and satisfactory results cannot be obtained.

  JP-A-3-271214   JP-A-6-219927   JP 2000-178161 A

  In view of the above-mentioned problems of the prior art, the present invention provides an unpleasant specific odor generated when a hair treatment agent containing cysteamine and / or a salt thereof reacts with the hair, without impairing the effect of the hair treatment agent, and the hair. An object of the present invention is to provide a deodorant composition and a method for deodorizing the same so as to reduce the damage without causing damage or discoloration of the hair color.

  In order to solve the above-mentioned problems, the present invention provides an amino-modified silicon and a polyoxyalkylene-modified silicon and has a pH of 2 with one or more pH buffer substances comprising an organic acid and a salt thereof, or an inorganic acid and a salt thereof. Applying or spraying to the hair a composition for deodorizing cysteamine reaction odor, characterized in that the acidity per gram is adjusted to 0.8 to 6.8 and the acidity per gram is in the range of 0.00001 to 0.08 meq. It is an excellent deodorization method that can reduce unpleasant specific odor.

  The deodorizing composition and the deodorizing method of the present invention provide an unpleasant specific odor generated when a hair treatment containing cysteamine and / or a salt thereof reacts with hair, without impairing the effect of the hair treatment agent, and the hair. It was excellent in reducing without causing damage and discoloration of hair color.

  The amino-modified silicon used in the present invention is represented by the formula (1). Among them, general ones are dimethylsiloxane and γ- (β-aminoethyl) aminopropylsiloxane or γ- (β-aminoethyl) aminopropyl. A copolymer of methylsiloxane, also referred to as AMODIMETHICONE, and many are commercially available in the form of an emulsion containing a surfactant.

（ｍ，ｎはそれぞれ１〜２０００の整数、ａ，ｂはそれぞれ０〜１００の整数、但しａ，ｂのどちらかが０の場合は一方は１〜１００の整数、ＲはＨ，ＯＨ又は炭素数１〜６のアルキル基を表す。）

(M and n are each an integer of 1 to 2000, a and b are each an integer of 0 to 100, provided that when either a or b is 0, one is an integer of 1 to 100, and R is H, OH or carbon. Represents an alkyl group of 1-6.)

  Typical examples include KF-8002 and KF-8004 manufactured by Shin-Etsu Chemical Co., Ltd., SM8702C, SM8704C and SM8904 manufactured by Toray Dow Corning Silicone, and UM-120 manufactured by GE Toshiba Silicone.

  The blending amount is preferably 0.01% to 5.0% by weight, more preferably 0.1% to 3.0% by weight. If the amount is less than 0.01% by weight, the effect is not exhibited, and if the amount is more than 5.0% by weight, the effect does not change so much, which is uneconomical.

  The polyoxyalkylene-modified silicon used in the present invention is a polymer obtained by substituting a part of the side chain of dimethylpolysiloxane with a polyoxyalkylene group such as polyoxyethylene or polyoxypropylene. It is also expressed as polyether-modified silicone or dimethicone copolyol and is commercially available.

（ｐ，ｑはそれぞれ１〜３０００の整数、ｘは０〜１０の整数、ｙ，ｚはそれぞれ０〜１００の整数、但しｙ，ｚのどちらかが０の場合は一方は１〜１００の整数、Ａ及びＡ’は炭素数２〜４のアルキレン基、Ｒ’はＨ又は炭素数１〜６のアルキル基を表す。）

(P and q are each an integer of 1 to 3000, x is an integer of 0 to 10, y and z are each an integer of 0 to 100, provided that when either y or z is 0, one is an integer of 1 to 100 , A and A ′ each represent an alkylene group having 2 to 4 carbon atoms, and R ′ represents H or an alkyl group having 1 to 6 carbon atoms.)

  Typical examples include KF351A, KF352A, KF6004 manufactured by Shin-Etsu Chemical Co., Ltd., SH3771C, SH3771M, SH3749 manufactured by Toray Dow Corning Silicone, TSF4440, TSF4452, and TSF4460 manufactured by GE Toshiba Silicone.

  The blending amount is preferably 0.01% to 5.0% by weight, more preferably 0.1% to 3.0% by weight. If the amount is less than 0.01% by weight, the effect is not exhibited, and if the amount is more than 5.0% by weight, the effect does not change so much, which is uneconomical.

  The pH buffer substance used in the present invention comprises an organic acid and its salt, or an inorganic acid and its salt. Examples of organic acids include lactic acid, citric acid, tartaric acid, malic acid and the like, and salts thereof include sodium, potassium, ammonium and the like, that is, sodium lactate, sodium dihydrogen citrate, disodium hydrogen citrate, citric acid, and the like. Examples include trisodium acid, potassium hydrogen tartrate, diammonium malate, and the like.

  In addition, as an inorganic acid, there is phosphoric acid and the like, and as a salt thereof, dihydrogen phosphate monosodium, disodium hydrogen phosphate, trisodium phosphate, dipotassium dihydrogen phosphate, potassium diammonium phosphate, etc. Is mentioned.

  These pH buffer substances are adjusted to pH 2.8 to 6.8 by combining one or more kinds. If the pH is less than 2.8, the hair is damaged and rustling occurs. Moreover, if pH is higher than 6.8, the effect of deodorizing will not be exhibited.

  The pH buffer substance is added so that the acidity per gram of the composition is in the range of 0.00001 to 0.08 milliequivalent, preferably 0.0005 to 0.05 milliequivalent. If the acidity per gram of the composition is less than 0.00001 milliequivalent, the deodorizing effect will not be exhibited. If the acidity is greater than 0.08 milliequivalent, not only will the hair be damaged, but if the target hair is colored hair, it will be dyed. Change hair color.

  In the composition for deodorizing a cysteamine reaction odor according to the present invention, any component used in ordinary cosmetics can be blended within a range in which the intended effect is not impaired. For example, a solvent, an oil agent, a surfactant, a humectant, an antiseptic, a thickener, a coloring agent, a flavoring agent, an anti-inflammatory agent and the like can be mentioned.

  Further, the deodorant composition according to the present invention is preferably used by directly applying or spraying to hair after treatment with a hair treatment agent containing cysteamine and / or a salt thereof. Even if applied before treatment, the effect is not changed, but the effect of the hair treatment agent may be hindered. In addition, although the 2nd agent containing an oxidizing agent is normally applied after application of the deodorizing composition by this invention, you may leave as it is and may utilize the oxidation by air.

  The method of application or spraying is not particularly limited. For example, in addition to an oil jug-like applicator or comb / brush usually used in a beauty salon or the like, a pump spray, an atomizer, an air spray, or the like can be used.

  EXAMPLES Next, although an Example is given and this invention is demonstrated in detail, this invention is not limited to these. The blending amount is% by weight.

  In the examples, SM8704C manufactured by Toray Dow Corning Silicone was used as the amino-modified silicon, and SH3771C manufactured by the same company was used as the polyoxyalkylene-modified silicon.

  The following hair treatment agents containing cysteamine and / or a salt thereof in the examples were used. In 80 to 90 g of water, 3 g of cysteamine hydrochloride aqueous solution (containing 50% by weight as cysteamine), 3 g of glycerin, 0.5 g of polyoxyethylene (20E.O) lanolin and 0.1 g of hydroxyethanediphosphonic acid 4Na are dissolved in order. After adjusting to pH 8.5 with water, water is further added to make the total amount 100 g.

Next, the implementation procedure is shown.
1. A hair treatment agent containing cysteamine and / or a salt thereof is applied to hair dyed with an oxidative hair dye (hair dye) and wound around a rod.
2. After leaving for 15 minutes, evaluate the reaction odor as a blank and then wash with water.
3. A deodorant composition is applied, and the effect of deodorization is evaluated after leaving for 15 minutes.
Apply 4.5% Na bromate aqueous solution (oxidant) and let stand for 15 minutes.
5. Rod out, wash with water, towel dry and dry with a hair dryer.
6). Evaluate tactile damage (pasaki) and visual discoloration.

The evaluation criteria for the deodorizing effect are based on the following.
◎ ・ ・ ・ There is almost no unpleasant peculiar odor and it is deodorized.
○ ... Slight unpleasant odor remains.
Δ: An unpleasant peculiar odor remains.
X: There is an unpleasant specific odor equivalent to that of the blank.

  As shown in Table 1, if the acidity per gram is less than 0.00001 milliequivalent, the effect of deodorization is not exhibited, and if it exceeds 0.08 milliequivalent, damage to the hair and discoloration of the hair color are prominent. The pH during this period was 6.3 to 3.3.

  In Table 1, dimethylpolysiloxane in place of amino-modified silicon and polyoxyethylene (20E.O.) coconut oil fatty acid sorbitan in place of polyoxyalkylene-modified silicon all have a deodorizing effect. Was not obtained.

  As shown in Table 2, the blending amount of amino-modified silicon and polyoxyalkylene-modified silicon was less than 0.01% by weight, and the deodorizing effect was not exhibited. On the other hand, if it exceeds 5.0% by weight, the effect is uneconomical.

  In addition, after apply | coating the deodorizing composition of Example 3 to hair, the hair treatment agent containing a cysteamine and / or its salt is apply | coated, and it winds around a rod for 15 minutes, and similarly above-mentioned 4-6 In the case of the operation, the deodorizing effect was equivalent to that of Example 3, but the curl of the hair was slightly slower than that of Example 3.

Claims (3)

  A deodorant for deodorizing a reaction odor of a hair treatment agent containing cysteamine and / or a salt thereof, comprising an amino-modified silicon and a polyoxyalkylene-modified silicon, and an organic acid and a salt thereof, or inorganic The pH is adjusted to 2.8 to 6.8 with one or more pH buffer substances consisting of an acid and a salt thereof, and the acidity per gram is in the range of 0.00001 to 0.08 meq. Deodorant composition.   The deodorization according to claim 1, wherein the content of the amino-modified silicon is 0.01 wt% to 5.0 wt% and the content of the polyoxyalkylene-modified silicon is 0.01 wt% to 5.0 wt%. Composition. A deodorizing method comprising directly applying or spraying the deodorizing composition according to claim 1 or 2 to hair after being treated with a hair treating agent containing cysteamine and / or a salt thereof.