JP4590370B2 - Deodorant composition - Google Patents

Description

  The present invention relates to a deodorant composition, and more particularly, to a deodorant composition that can reduce a complex odor derived from fatty acids, aldehydes, tobacco odor, and the like and is safe for the human body, and a deodorization method. .

A deodorant relieves an unpleasant odor together with a fragrance, and plays an important part in living a comfortable life. Recent needs regarding deodorization have changed from a fragrance that masks bad odor with a strong fragrance to a deodorant that eliminates the odor itself with a slight fragrance or no fragrance.
In addition, while there is an increasing laundry habit of wearing clothes that do not touch the skin directly, they do not wash immediately, but on the other hand, they are concerned about the smell of clothes that are not washed. Most of the unpleasant odors in the living environment are complex odors, and there is a need for a deodorant effective for these complex odors.

Conventionally, deodorizing techniques for specific malodorous components are known, but few are effective for complex odors.
For example, Patent Document 1 discloses that an organic dibasic acid or a salt thereof can deodorize lower fatty acids such as acetic acid and isovaleric acid and amines such as ammonia and trimethylamine. However, the organic dibasic acid or a salt thereof does not have a sufficient deodorizing effect on aldehydes.
Patent Document 2 discloses that a deodorant containing ethanolamine is effective for deodorizing unsaturated aldehydes such as Nonenal, which is one of the causative substances of aging odors recognized after middle-aged and older. . However, regarding ethanolamine, the effect on fatty acid odor, amine odor, etc. is unknown, and ethanolamine is irritating and is not suitable for use in a form that may touch the human body.
Patent Document 3 discloses that an anionic surfactant containing at least one selected from triethanolamine and tris (hydroxymethyl) aminomethane as a salt can suppress a complex odor in which lower fatty acids and amines coexist. It is disclosed. However, the amine salt of this anionic surfactant is unclear for its effect on aldehydes and has poor solubility in water, and is not suitable for preparing a deodorant.
Under such circumstances, it has been desired to develop a deodorant that can reduce the complex odor derived from fatty acids, aldehydes and the like and is safe for the human body.

JP 2001-95907 A JP 2001-97838 A JP 2004-49889 A

  The present invention is capable of reducing a composite odor derived from fatty acids, aldehydes, tobacco odors, etc., is easy to prepare an aqueous deodorant, and is safe even when touching the human body, And providing a deodorizing method.

The present inventors have found that specific polyhydroxyamines are effective for deodorizing fatty acids and aldehydes, and are also effective for amines by using in combination with amphoteric surfactants and adjusting the pH to near neutrality. It was found that the stimulation to the human body was alleviated.
That is, the present invention
(1) Tris (hydroxymethyl) aminomethane, 2-amino-1,3-propanediol, 2-amino-2-methyl-1,3-propanediol, 2-amino-2-ethyl-1,3-propane Diol, and one or more polyhydroxyamine compounds selected from 2-amino-2-hydroxyethyl-1,3-propanediol and / or a salt thereof (a), and an amphoteric surfactant (b), A deodorant composition having a pH of 6.0 to 9.5, and (2) a deodorization method for reducing the odor of the object by attaching the deodorant composition described in (1) to the object ,I will provide a.

The deodorant composition of the present invention can deodorize complex odors derived from fatty acids, aldehydes, amines, tobacco odors, etc., is easy to prepare an aqueous deodorant, and is safe to touch the human body It is. Moreover, the deodorizing effect which was excellent with respect to the composite odor adhering to solid surfaces, such as space and a textile product, is exhibited.
Moreover, according to the deodorizing method of the present invention, a complex odor derived from fatty acids, aldehydes, amines, tobacco odor and the like can be easily and effectively deodorized.

  The deodorant composition of the present invention comprises a polyhydroxyamine compound represented by the following general formula (1) and / or a salt thereof (a) (hereinafter simply referred to as “polyhydroxyamine compounds (a)” or “(a ) Component) and amphoteric surfactant (b) (hereinafter, also referred to as “component (b)”), and has a pH of 6.0 to 9.5. To do.

Polyhydroxyamine compounds (a)
The polyhydroxyamine compound and / or salt (a) thereof used in the present invention is represented by the following general formula (1).

In the general formula (1), R ¹ represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or a hydroxyalkyl group having 1 to 5 carbon atoms.
The alkyl group having 1 to 5 carbon atoms may be linear or branched, and examples thereof include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, various butyl groups, and various pentyl groups. Examples of the hydroxyalkyl group having 1 to 5 carbon atoms include hydroxymethyl group, 2-hydroxyethyl group, 2-hydroxypropyl group, 3-hydroxypropyl group, 2-hydroxybutyl group, 3-hydroxybutyl group, 4- Examples thereof include a hydroxybutyl group.
R ¹ is preferably a hydrogen atom, a methyl group, an ethyl group, a hydroxymethyl group, or a 2-hydroxyethyl group from the viewpoint of deodorizing performance and availability, and particularly a hydrogen atom, a hydroxymethyl group, or 2-hydroxy An ethyl group is preferred.

R ² represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a hydroxyalkyl group having 1 to 5 carbon atoms.
The alkyl group having 1 to 6 carbon atoms may be linear, branched or cyclic. Specific examples of the alkyl group include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, various butyl groups, various pentyl groups, various hexyl groups, cyclopentyl groups, and cyclohexyl groups.
The above-mentioned thing is mentioned as a C1-C5 hydroxyalkyl group.
From the viewpoints of deodorizing performance and availability, R ² is preferably a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or a hydroxyethyl group, and particularly preferably a hydrogen atom.
R ³ and R ⁴ represent an alkanediyl group having 1 to 5 carbon atoms. R ³ and R ⁴ may be the same or different. As the alkanediyl group having 1 to 5 carbon atoms, a methylene group, an ethylene group, a trimethylene group, a propane-1,2-diyl group, a tetramethylene group, and the like are preferable, and a methylene group is particularly preferable.

Specific examples of the polyhydroxyamine compounds (a) include, for example, tris (hydroxymethyl) aminomethane, 2-amino-1,3-propanediol, 2-amino-2-methyl-1,3-propanediol, 2-amino-2-ethyl-1,3-propanediol, 2-amino-2-hydroxymethyl-1,3-propanediol, 2-amino-2-hydroxyethyl-1,3-propanediol, 4-amino -4-hydroxypropyl-1,7-heptanediol, 2- (N-ethyl) amino-1,3-propanediol, 2- (N-ethyl) amino-2-hydroxymethyl-1,3-propanediol, 2- (N-decyl) amino-1,3-propanediol, 2- (N-decyl) amino-2-hydroxymethyl-1,3-propanedio Le etc., and include acid salts neutralized with those with inorganic acids or organic acids. As an acid, 1 or more types chosen from hydrochloric acid, a sulfuric acid, nitric acid, phosphoric acid, carbonic acid, a C1-C12 fatty acid, and a C1-C3 alkyl sulfuric acid are preferable.
Among these, from the viewpoint of deodorizing performance and the like, tris (hydroxymethyl) aminomethane, 2-amino-1,3-propanediol, 2-amino-2-methyl-1,3-propanediol, 2-amino 2-ethyl-1,3-propanediol, 2-amino-2-hydroxymethyl-1,3-propanediol, 2-amino-2-hydroxyethyl-1,3-propanediol, and hydrochloric acid, etc. One or more selected from salts with inorganic acids are particularly preferred.

When the polyhydroxyamine compound represented by the general formula (1) is used as a salt such as hydrochloric acid, the pH can be adjusted by adding a base. Examples of the base that can be used include sodium hydroxide, potassium hydroxide, magnesium hydroxide, calcium hydroxide and the like, as well as monoethanolamine, diethanolamine, triethanolamine, methylethanolamine, dimethylethanolamine and the like. Of these, sodium hydroxide and potassium hydroxide are preferred.
Said polyhydroxyamine compound (a) can be used individually or in mixture of 2 or more types. The polyhydroxyamine compounds (a) can be produced by a conventional method.

  The content of the polyhydroxyamine compounds varies depending on the concentration of malodor to be deodorized and the use form, but is usually 0.01% by mass or more, preferably 0.01 to 90% by mass, more preferably 0.05 to 50%. % By mass, particularly preferably 0.1 to 30% by mass.

The deodorant of the present invention exhibits a deodorizing performance against a complex odor derived from a fatty acid, an aldehyde, an amine, a tobacco odor, etc., even with a polyhydroxyamine compound alone, and an amphoteric surfactant and By using in combination, the deodorizing performance can be further enhanced.
Normally, odor components adhere to solid surfaces such as suits, sweaters, curtains, sofas and other textile products, but amphoteric surfactants not only suppress the volatilization of odor components adhering to solid surfaces, but also deodorant components. It is possible to stably disperse the polyhydroxyamine compounds, improve contact with odor components, and further improve deodorization performance.

Amphoteric surfactant (b)
As the amphoteric surfactant used in the present invention, amine oxide type, carbobetaine type,
Examples include sulfobetaine type, imidazoline type, amidoamine type, and alkyldiethylenetriaminoacetate type.
Examples of the amine oxide type amphoteric surfactant include alkyldimethylamine oxide having a substituted or unsubstituted alkyl group having 8 to 18 carbon atoms, and alkylamidopropylamine-N, N-dimethyl-N-oxide.
Examples of carbobetaine type amphoteric surfactants include alkylaminoacetic acid betaines, alkyldimethylaminoacetic acid betaines, alkylamidopropylamine-N, N-dimethyl-N-acetic acids having a substituted or unsubstituted alkyl group having 8 to 18 carbon atoms. Examples include betaine.
Examples of the sulfobetaine-type amphoteric surfactant include alkyl-N, N-dimethyl-N-ethylsulfonate, lauryl-N, N-dimethyl-N- (2-hydroxypropyl) sulfonate, and the like. Examples of imidazoline type amphoteric surfactants include 2-alkyl-N-carboxymethylimidazolinium betaine, 2-alkyl-N-carboxyethylimidazolinium betaine, 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoli. Nitrobetaine etc. are mentioned. Examples of amidoamine type amphoteric surfactants include N-2-hydroxyethyl-N-2-lauric acid amidoethyl-β-alanine, N-2-hydroxyethyl-N-2-coconut oil fatty acid amidoethyl-β-alanine, and the like. It is done.

  In these, 1 or more types chosen from the amine oxide type | mold amphoteric surfactant represented by following General formula (2) and the carbobetaine type | mold amphoteric surfactant represented by following General formula (3) are preferable.

In general formulas (2) and (3), R ⁵ represents a substituted or unsubstituted alkyl group or alkenyl group having 8 to 18 carbon atoms, and R ⁶ and R ⁷ represent a methyl group, an ethyl group, or a carbon number of 2 or shows a 3 hydroxyalkyl group, R ⁸ represents a substituted or unsubstituted alkanediyl group having 2 to 5 carbon atoms, R ⁹ represents a substituted or unsubstituted alkanediyl group having 1 to 5 carbon atoms . Examples of the substituent include an alkyl group, an amino group, and a halogen atom.
R ⁵ in the general formulas (2) and (3) is preferably a substituted or unsubstituted alkyl group or alkenyl group having 10 to 16 carbon atoms, more preferably a substituted or unsubstituted group having 10 to 16 carbon atoms. It is an alkyl group.
More specifically, examples of the amine oxide type amphoteric surfactant represented by the general formula (2) include lauryldimethylamine oxide, laurylamidopropylamine-N, N-dimethyl-N-oxide, etc. Examples of the carbobetaine type amphoteric surfactant represented by the formula (3) include lauryldimethylaminoacetic acid betaine, laurylamidopropylamine-N, N-dimethyl-N-acetic acid betaine, and the like.

The content of the amphoteric surfactant to be used varies depending on the concentration of malodor to be deodorized and the use form, but is usually 0.001% by mass or more, preferably 0.001 to 30% by mass, more preferably 0.01 to 10% by mass.
From the viewpoint of deodorizing performance, the blending ratio [(a) / (b)] (mass ratio) of the polyhydroxyamine compound (a) and the amphoteric surfactant (b) is preferably 10/1 to 1/10. More preferably, it is 8/1 to 1/8, more preferably 5/1 to 1/5, still more preferably 4/1 to 1/4, and particularly preferably 3/1 to 1/3.

The deodorant of the present invention has a pH of 6.0 to 9.5. The deodorant of the present invention exhibits an effect on fatty acids and aldehydes at pH 6.0 or more, and an effect on amines at pH 9.5 or less.
From the viewpoints of effects on all of fatty acids, aldehydes, amines, tobacco odor and the like, and reduction of skin irritation, the pH is preferably 6.5 to 9.5, and more preferably 6.8 to 9.0.
The pH of the polyhydroxyamine compound represented by the general formula (1) can be adjusted by adding an acid or a base. Examples of the acid that can be used include hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, carbonic acid, acetic acid, lactic acid, succinic acid, malic acid, citric acid, and the like. Of these, hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, and carbonic acid are preferred. Examples of the base that can be used include sodium hydroxide, potassium hydroxide, magnesium hydroxide, calcium hydroxide and the like, as well as monoethanolamine, diethanolamine, triethanolamine, methylethanolamine, dimethylethanolamine and the like. Among these, sodium hydroxide and potassium hydroxide are preferable.

In the deodorant composition of the present invention, the remainder other than the components (a) and (b) can be water. The water to be used is preferably one obtained by removing ionic components from distilled water, ion-exchanged water or the like.
If necessary, in addition to other deodorants and surfactants, various solvents, polyhydric alcohols, oils, gelling agents, sodium sulfate, N , N, N-trimethylglycine and other salts, pH adjusters, antioxidants, antiseptics, bactericides / antibacterial agents, fragrances, pigments, ultraviolet absorbers and the like can be added.
Examples of the solvent include ethanol, monoethyl or monobutyl ether of ethylene glycol or propylene glycol, monoethyl or monobutyl ether of diethylene glycol or dipropylene glycol, benzyl alcohol, benzyloxyethanol, an ethylene oxide or propylene oxide adduct of a phenolic compound, and the like.
Examples of polyhydric alcohols that can be used include glycerin, ethylene glycol, propylene glycol, 1,3-propanediol, butanediol, diethylene glycol, dipropylene glycol, polyethylene glycol, polypropylene glycol, and the like. Among these, diethylene glycol and dipropylene glycol are preferable.

The usage form of the deodorant composition of this invention can be made into solid forms, such as liquid form, a gel form, a powder form, and a granular form. In the case of liquids, textile products, spaces, human bodies, pets and the like can be used as deodorization targets, particularly as sprays, lotions and the like. The deodorant composition of the present invention is particularly preferably a water-based deodorant composition filled in a mist type spray container and adjusted in a single spray amount to 0.1 to 1 ml. As a spray container to be used, a known spray container such as a trigger spray container (direct pressure or pressure accumulation type) or a dispenser type pump spray container can be used.
In the case of gel or solid, it is suitable for partial use on the human body. Further, for example, it can be used as a stationary type, such as being used as an air purifier filter by being immersed or sprayed on paper or non-woven fabric.
The object of the deodorizing method using the deodorant composition of the present invention is not particularly limited as long as it has a solid surface. For example, the deodorant of the present invention is applied to objects having hard surfaces such as cloth such as curtains, clothing such as suits and sweaters, textiles such as carpets and sofas, tableware, trash cans, cooking tables, indoor floors, ceilings and walls. The agent composition can be adhered, and the odor of the object can be effectively reduced. In particular, it is effective for an object having a large surface area to be deodorized such as a textile product.

Example 1
In order to eliminate the influence of the deodorizing effect due to the fragrance, 20 g of a deodorant with an unscented formulation shown in Table 1 was prepared. Next, a 10cm x 10cm cotton towel is placed on one wall of a smoking room 2.8m wide x 3.5m deep x 2.5m high, and the height from the floor to the top of the towel is 1.8m Was hung vertically for 4 hours. Thereafter, 0.3 g of the deodorant having the formulation shown in Table 1 was sprayed uniformly on the entire towel with a spray vial. After spraying, a towel was placed on a balance dish of about 10 cm square, and the smell of the towel after being left for 2 hours was subjected to sensory evaluation.
The sensory evaluation was performed by five panelists, and the odor intensity after 30 minutes when the deodorant was not sprayed was set to 5, and the average value was determined by the following 6-step odor intensity display method. The results are shown in Table 1.
0: Odorless 1: Strength of feeling something slightly but not knowing what odor (detection threshold level)
2: The weak smell that can be felt easily, knowing what kind of odor it is (the level of recognition threshold)
3: Obvious odor 4: Strong odor 5: Unbearable odor

Comparative Example 1
The same operation as in Example 1 was conducted except that laurylamidopropylamine-N, N-dimethyl-N-oxide was removed as the amphoteric surfactant. The results are shown in Table 1.
Comparative Example 2
In Example 1, it evaluated similarly to Example 1 without spraying deodorant aqueous solution. The results are shown in Table 1.

Examples 2-7
In order to eliminate the influence of the deodorizing effect due to the fragrance, 100 g of a deodorant with an unscented combination formulation shown in Tables 2 and 3 was prepared. A cotton knitted fabric was sprayed with 0.06 g of a 1% ethanol solution of nonanal and allowed to dry for 30 minutes to obtain a test fabric. Next, 0.36 g of the deodorant shown in Table 2 was sprayed, a towel was placed on a balance dish of about 10 cm square, and the odor after being left for 1 hour was evaluated by the following 6-step odor intensity display method. Asked.
0: Odorless 1: Strength of feeling something slightly but not knowing what odor (detection threshold level)
2: The weak smell that can be felt easily, knowing what kind of odor it is (the level of recognition threshold)
3: Obvious odor 4: Strong odor 5: Unbearable odor Average value 0 or more and less than 1 ◎, average value 1 or more and less than 2 ○, average value 2 or more and less than 3 △, average value 3 or more 5 The following was set as x. The evaluation is preferably ◎ or ○. The results are shown in Table 2.

Comparative Examples 3-5
The same procedure as in Examples 2 to 7 was performed except that the amphoteric surfactant was omitted. The results are shown in Table 2.
Comparative Examples 6 and 7
Except for the polyhydroxyamine compound, the same procedure as in Examples 2 to 7 was performed. The results are shown in Table 2.

  The deodorant of the present invention can deodorize complex odors derived from fatty acids, aldehydes, tobacco odors, etc., and it is easy to prepare an aqueous deodorant and is safe to touch the human body. For this reason, the deodorant composition of the present invention adheres to textiles such as fabrics, clothes, carpets and sofas, tableware, trash cans, cooking tables, indoor floors, ceilings, objects having hard surfaces such as walls, etc. It can be suitably used as a deodorant composition having a composite odor.

Claims (4)

Tris (hydroxymethyl) aminomethane, 2-amino-1,3-propanediol, 2-amino-2-methyl-1,3-propanediol, 2-amino-2-ethyl-1,3-propanediol, and It contains at least one polyhydroxyamine compound selected from 2-amino-2-hydroxyethyl-1,3-propanediol and / or a salt thereof (a), and an amphoteric surfactant (b), and has a pH of 6 Deodorant composition which is 0.0-9.5 . The amphoteric surfactant (b) is one selected from amine oxide amphoteric surfactants represented by the following general formula (2) and carbobetaine amphoteric surfactants represented by the following general formula (3) at least, the deodorant composition of claim 1.

(In the formula, R ⁵ represents a substituted or unsubstituted alkyl group or alkenyl group having 8 to 18 carbon atoms, and R ⁶ and R ⁷ represent a methyl group, an ethyl group, or a hydroxyalkyl group having 2 or 3 carbon atoms. R ⁸ represents a substituted or unsubstituted alkanediyl group having 2 to 5 carbon atoms, and R ⁹ represents a substituted or unsubstituted alkanediyl group having 1 to 5 carbon atoms. The deodorant composition according to claim 1 or 2 , wherein the deodorant is an aqueous deodorant. The deodorizing method which makes the deodorizer composition in any one of Claims 1-3 adhere to a target object, and reduces the smell of a target object.