JP7038431B2 - Deodorant, functional lubricant - Google Patents

Description

The present invention relates to a deodorant and a functional lubricant containing the deodorant.

Conventionally, various deodorants and deodorant compositions composed of a component having a deodorizing function and other components have been provided and proposed in order to remove or alleviate a bad odor.
For example, as the deodorant for automobile interior members described in Patent Document 1 and Patent Document 2, at least one selected from zinc sulfate, zinc chloride, zinc acetate, and zinc-based metal complex salt compounds is used as a deodorant component. As a stabilizer, it contains a natural protein such as ethylenediamine tetraacetic acid and / or zinc, and a binder for binding an automobile interior member such as fiber to a deodorant.
The deodorant composition described in Patent Document 3 contains a deodorant and a polymer that is soluble in an organic solvent and water-soluble.
The composite bactericidal deodorant composition described in Patent Document 4 includes (A) silver ion, (B) water alone or a mixture of water and a water-soluble solvent, (C) a polymer electrolyte, (D) a surfactant and / Or (E) contains a solidifying functional hydrophilic polymer compound.

Japanese Unexamined Patent Publication No. 11-9670 Japanese Unexamined Patent Publication No. 11-128326 Japanese Unexamined Patent Publication No. 2004-358027 Japanese Unexamined Patent Publication No. 2011-167218 Japanese Patent Application Laid-Open No. 2003-146875 Japanese Unexamined Patent Publication No. 2005-289884 Japanese Unexamined Patent Publication No. 2006-347969 JP-A-2007-182398 Japanese Unexamined Patent Publication No. 2016-11430

However, since the above-mentioned conventional deodorant and deodorant composition are not easy to use only with the component having a deodorizing function, other components are added depending on the component having the deodorizing function. The selection of other components and the adjustment of the amount added tended to be complicated. Further, since the component having a deodorizing function does not exert an effect on all bad odors but exerts an effect only on a specific bad odor, it is complicated to select the component having the deodorizing function. rice field. Furthermore, recent deodorants and deodorant compositions are trying to add not only deodorant functions but also other functions such as sterilization, and the selection of components and the adjustment of the amount of addition become more complicated. There is. That is, the above-mentioned conventional deodorant and deodorant composition have a problem that the composition becomes complicated.
On the other hand, for example, as shown in Patent Documents 5 to 9, functional lubricants are provided for use during sexual intercourse or massage. However, although it is desirable to impart a deodorizing function to the functional lubricant for the purpose of its use, there is a problem that the imparting of the deodorizing function is not particularly considered.
The present invention has been made by paying attention to the problems existing in such a conventional technique. The purpose is to provide a deodorant having a simple composition. Another object of the present invention is to provide a functional lubricant having a deodorizing function.

In order to achieve the above object, the invention of the deodorant according to claim 1 is characterized by comprising an acrylic acid-based polymer.
The invention according to claim 2 is the invention of the deodorant according to claim 1, wherein the acrylic acid-based polymer contains a water-containing gel of a completely neutralized polyacrylic acid or a partially neutralized polyacrylic acid. The gist is that it is a gel body.
The invention according to claim 3 is the gist of the invention of the deodorant according to claim 1, wherein the acrylic acid-based polymer is a powder of a completely neutralized polyacrylic acid.
The invention according to claim 4 is the invention of the deodorant according to claim 1, wherein the acrylic acid-based polymer is crosslinked polyacrylic acid or crosslinked sodium polyacrylate.
The invention of the functional lubricant according to claim 5 is gisted to include the deodorant according to any one of claims 1 to 4.

[Action]
As a result of conducting various experiments on the acrylic acid-based polymer, the inventors of the present invention have found that the acrylic acid-based polymer has a deodorizing function, and have completed the present invention. That is, the deodorant of the present invention is made of an acrylic acid-based polymer. The acrylic acid-based polymer is generally used as a gelling agent, a thickener, etc., is easily available, is easy to use, and has a simple composition related to a deodorant. Yes (Claim 1).
Further, as the acrylic acid-based polymer, both a water-containing gel body of a completely neutralized polyacrylic acid and a water-containing gel body of a partially neutralized polyacrylic acid can be used (claim 2).
Further, as the acrylic acid-based polymer, a powder of a completely neutralized polyacrylic acid can be used (claim 3).
Further, as the acrylic acid-based polymer, both cross-linked polyacrylic acid and cross-linked sodium polyacrylate can be used (claim 4).
The functional lubricant of the present invention contains the above-mentioned deodorant made of an acrylic acid-based polymer, and can have a deodorizing function (claim 5).
[effect]
According to the present invention, it is possible to provide a deodorant having a simple composition, and it is possible to provide a functional lubricant having a deodorizing function.

Hereinafter, an embodiment embodying the present invention will be described.
The deodorant of the present invention is made of an acrylic acid-based polymer. The acrylic acid-based polymer is a polymer having a polyacrylic acid as a unit structure, and since a hydrophilic carboxyl group is present in the molecule of the polyacrylic acid, it is possible to incorporate water molecules into the molecule. It is possible and has water absorbency. That is, it is considered that the acrylic acid-based polymer exerts a deodorizing function by incorporating a substance containing water such as urine and sweat that emits a bad odor into the molecule together with the component of the bad odor. Therefore, the deodorant is an acrylic acid-based deodorant without adding general deodorant components such as activated carbon, a photocatalyst, ozone, a chlorine-based compound, a zinc-based metal complex salt compound, a metal-based compound such as silver oxide, and the like. It is possible to remove or alleviate the odor generated from a specific malodorous component only with the polymer.
The acrylic acid-based polymer is usually in the form of powder, and can be used as a deodorant in the form of the powder. Alternatively, the acrylic acid-based polymer can be cross-linked by non-covalent bonds such as hydrogen bonds, hydrophobic aggregations, and ionic bonds in the molecule by absorbing water, that is, by physically cross-linking to form a network structure. It is in the form of a hydrogel body that can take in water molecules. The acrylic acid-based polymer can also be used as a deodorant in the form of the hydrogel body. In the usage form of the acrylic acid-based polymer, the powder and the water-containing gel body are appropriately used depending on the malodorous component to be deodorized, usability, and the like.

The acrylic acid-based polymer is a polymer having the following structural units of the following general formulas (1) and / or (2) corresponding to the monomer when polymerized using acrylic acid or methacrylic acid as a carboxylic acid as a monomer. The structural unit represented by the general formula (1) is a structural unit derived from acrylic acid, and the structural unit represented by the general formula (2) is a salt of the structural unit represented by the general formula (1). (Constituent unit derived from acrylate).
Further, the acrylic acid-based polymer contains the following general formula (1) or (2) in an amount of 80% by mass or more, preferably 90% by mass or more, and particularly preferably 100% by mass.

If the acrylic acid-based polymer has the structural unit of the above general formula (1) or (2), for example, polyacrylic acid or polymethacrylic acid which is a homopolymer of acrylic acid or methacrylic acid, or theirs. In addition to the salt, a compound having a polymerizable unsaturated bond that can be copolymerized with acrylic acid as a structural unit other than the above general formula (1) or (2) (hereinafter referred to as "other monomer"). It may have a structural unit of origin, and is not particularly limited.
Examples of the other monomer include unsaturated monocarboxylic acid having 4 or more carbon atoms or a salt thereof, unsaturated dicarboxylic acid or an anhydride thereof or a salt thereof, and other (meth) acrylic acid alkyl esters, (meth). Nonionic monomers such as esters of (meth) acrylic acids having 1 to 12 carbon atoms such as hydroxyalkyl acrylates, anionic compounds such as itaconic acid, metharylsulfonic acid, maleic acid, maleic anhydride or alkali metal salts thereof. Examples thereof include monomers and olefins having 1 to 8 carbon atoms such as isoprene.
Specific examples of the unsaturated monocarboxylic acid include crotonic acid, isocrotonic acid, α-hydroxyacrylic acid and the like in addition to the methacrylic acid.
Examples of the unsaturated dicarboxylic acid or its anhydride include mesaconic acid, fumaric acid, citraconic acid and the like, in addition to the maleic acid, the maleic anhydride and the itaconic acid mentioned as the anionic monomer.
Examples of the (meth) acrylic acid alkyl ester include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, and butyl (meth) acrylate.
Examples of the (meth) acrylic acid hydroxyalkyl ester include (meth) acrylic acid 2-hydroxyethyl, (meth) acrylic acid 2-hydroxypropyl, and (meth) acrylic acid 3-hydroxypropyl.

The acrylic acid-based polymer in the present invention is preferably polyacrylic acid (salt) based on a structural unit derived from acrylic acid (salt).
That is, in the polyacrylic acid (salt), all the polyacrylic acid in the molecule is neutralized, and the completely neutralized product according to the structural unit of the above general formula (2) and a part of the polyacrylic acid in the molecule. Is neutralized, and there is a partially neutralized product according to the structural units of the above general formulas (1) and (2). As the acrylic acid-based polymer, either a completely neutralized polyacrylic acid or a partially neutralized polyacrylic acid can be used. In the acrylic acid-based polymer, the polyacrylic acid completely neutralized product and the polyacrylic acid partially neutralized product are appropriately used depending on the malodorous component to be deodorized, usability, and the like.
Further, as the acrylic acid-based polymer, crosslinked polyacrylic acid (salt) can also be used, and it is appropriately used depending on the malodorous component to be deodorized, usability, and the like.

The acrylic acid-based polymer has a weight average molecular weight (Mw) of preferably 1,000 to 5,000,000, more preferably 5,000 to 5,000,000, and even more preferably 10,000 to 5,000. It is 000. If the weight average molecular weight (Mw) is out of the above range, the viscosity of the functional lubricant described later may not be within the desired range.
The weight average molecular weight can be measured by gel permeation chromatography.

The functional lubricant of the present invention contains the deodorant made of the acrylic acid-based polymer. The functional lubricant is used as an inspection jelly for lubrication during sexual intercourse and massage, or during an abdominal echo examination and an electrocardiogram examination. The functional lubricant is mainly composed of a water-soluble polymer and water, and a moisturizer, a fragrance, a refreshing agent, a coloring agent and the like are further added as desired.
Examples of the water-soluble polymer include water-soluble synthetic polymers such as polyacrylic acid salts, polyacrylamide and polyethylene oxide, water-soluble fibrous derivatives such as cellulose acetate butyrate, methyl cellulose, ethyl cellulose, methoxycellulose and ethoxycellulose, and starch. , Modified starch, alginates and the like are exemplified. For the water-soluble polymer, two or more of the exemplified ones may be mixed and used.
The polyacrylic acid (salt) mentioned in the acrylic acid-based polymer of the deodorant corresponds to the polyacrylic acid salts mentioned in the water-soluble polymer of the functional lubricant. Therefore, the functional lubricant can impart a deodorizing function by using the acrylic acid-based polymer of the deodorant as the water-soluble synthetic polymer. In particular, the polyacrylic acid (salt) derived from the acrylic acid (salt) -derived structural unit is harmless to the human body, is not irritating, and has a pH of 7 to 9 for a completely neutralized polyacrylic acid, polyacrylic acid. It is a partially neutralized product, which is about 6 to 8 and has no corrosiveness and is safe. Furthermore, the water-containing gel body of the completely neutralized polyacrylic acid or the water-containing gel body of the partially neutralized polyacrylic acid is extremely excellent in lubricity, and its viscosity does not easily change by the shearing force due to sexual intercourse or massage, and is excellent. Lubricity can be maintained.
Examples of the polyacrylic acid salts include, in addition to the sodium polyacrylate, potassium polyacrylate, ammonium polyacrylic acid and the like, which are mixed with the acrylic acid-based polymer and used as the water-soluble polymer. May be good.

Usually, in the functional lubricant, water is added to the water-soluble polymer so as to have a concentration of about 5% by weight or less to form a hydrogel. The hydrogel may be added with a water-soluble organic solvent such as ethanol, ethylene glycol, or glycerin.
Further, the polyacrylic acid salts have a viscosity of 500 mPa · s or more, more preferably 600 mPa · s or more, and 700 mPa · s, at a concentration of 1% by weight thereof and at 25 ° C. The above is more preferable. When the viscosity of the water-containing gel is less than 500 mPa · s, it is necessary to increase the concentration of polyacrylic acid salts in order to obtain the desired viscosity as the functional lubricant, resulting in deterioration of lubricity and complicated composition. It may lead to the change.
The viscosity of the hydrogel containing polyacrylic acid salts is controlled by the degree of polymerization of the polyacrylic acid salts. For example, when the viscosity average molecular weight of sodium polyacrylate is 35,000 and the concentration is 1% by weight, the temperature is 25 ° C. The viscosity is about 11000 mPa · s. The polyacrylic acid salts alone can satisfy the performance required for the functional lubricant, but if necessary, two or more kinds of polyacrylic acid salts may be mixed, or the polyacrylic acid salts and other polyacrylic acid salts may be mixed. A suitable effect can be obtained by mixing with a water-soluble polymer.

[Experimental example]
Hereinafter, an experimental example relating to deodorization, which further embodies the present invention, will be described, but the present invention is not limited to this experimental example.
〔sample〕
NO. 0: Water (comparative blank).
NO. 1: A hydrogel containing a completely neutralized polyacrylic acid (manufactured by Toagosei Co., Ltd., Aronbis GLX, concentration 1% by weight).
NO. 2: A hydrogel containing a partially neutralized polyacrylic acid (manufactured by Toagosei Co., Ltd., Alonbis AH106X, concentration 1% by weight).
NO. 3: Cross-linked sodium polyacrylate hydrogel (manufactured by Sanyo Chemical Industries, Ltd., Sunfresh ST573, concentration 1% by weight).
NO. 4: Powder of completely neutralized polyacrylic acid (Aronbis GLX manufactured by Toagosei Co., Ltd.).
NO. 5: Cross-linked sodium polyacrylate powder (Sunfresh ST573 manufactured by Sanyo Chemical Industries, Ltd.).
NO. 6: Cross-linked polyacrylic acid unneutralized hydrogel (manufactured by Toagosei Co., Ltd., Junron PW-120, concentration 1% by weight).
NO. 7: Hydrogel containing unneutralized polyacrylic acid (manufactured by Toagosei Co., Ltd., Julimer AC-10LHP, concentration 1% by weight).
NO. 8: A hydrogel containing a completely neutralized cross-linked polyacrylic acid (manufactured by Toagosei Co., Ltd., Leosic 206H 40729, concentration 1% by weight).

[Foul odor component]
Ammonia: Initial concentration 150ppm.
Trimethylamine: Initial concentration 20 ppm.
Hydrogen sulfide :, initial concentration 20 ppm.
Methyl mercaptan: initial concentration 5 ppm.
Acetic acid: Initial concentration 50 ppm.
Isovaleric acid: initial concentration 50 ppm.
Acetaldehyde: Initial concentration 100 ppm.
Nonenal: Initial concentration 5 ppm.

〔Test method〕
After 5 g of the sample was put into a test container (1 L Erlenmeyer flask), the malodorous component was sealed in the test container at the above initial concentration. After leaving the test container for 30 minutes under the encapsulation of the malodorous component, the concentration of the malodorous component remaining in the test container was measured and the deodorization rate was calculated. In addition, the concentration of the malodorous component was measured by a direct method by gas chromatographic measurement using a gas detector tube.

〔Test results〕
Table 1 shows the test results by the above test method.

NO. 1 to NO. Of the 8 samples, those with a deodorizing rate of 80% or more are marked with ⊚, those with a deodorizing rate of less than 80% are marked with ○, those with a deodorizing rate of less than 50% and exceeding 0% are marked with △, and those with a deodorizing rate of 0% are marked with ×. The odor effect was evaluated. The results are shown in Table 2.

The results of Tables 1 and 2 are summarized as follows.
NO. The hydrogel body of the completely neutralized polyacrylic acid of No. 1 showed an excellent deodorizing effect on the malodorous components ammonia, trimethylamine, acetic acid, and isovaleric acid, and also showed a deodorizing effect on acetaldehyde. It also showed a slight deodorant effect on hydrogen sulfide and nonenal.
NO. The hydrogel body of the partially neutralized polyacrylic acid of No. 2 shows an excellent deodorizing effect on the malodorous components ammonia, trimethylamine, acetic acid, and isovaleric acid, and also has a deodorizing effect on acetaldehyde and nonenal. It also showed a slight deodorant effect on hydrogen sulfide.
NO. The water-containing gel of cross-linked sodium polyacrylate of No. 3 exhibits an excellent deodorizing effect on the malodorous components ammonia, trimethylamine, acetic acid, and isovaleric acid, and also exhibits a deodorizing effect on acetaldehyde. It showed a slight deodorant effect on hydrogen sulfide and nonenal.
NO. The powder of the completely neutralized polyacrylic acid of No. 4 has an excellent deodorizing effect on hydrogen sulfide, acetic acid, and isovaleric acid, has a deodorizing effect on ammonia, and has trimethylamine, acetaldehyde, and nonenal. It showed a slight deodorizing effect on.
NO. The crosslinked sodium polyacrylate powder of No. 5 has an excellent deodorizing effect on the malodorous components ammonia, trimethylamine, acetic acid, and isovaleric acid, and also has a deodorizing effect on nonenal, and is sulfurized. It showed a slight deodorant effect on hydrogen and acetaldehyde.
NO. The water-containing gel body of the crosslinked polyacrylic acid unneutralized product of No. 6 shows an excellent deodorizing effect on the malodorous components ammonia, trimethylamine and nonenal, and also has a deodorizing effect on acetic acid and isovaleric acid. It also showed a slight deodorant effect on methyl mercaptan and acetaldehyde.
NO. The hydrogel body of the unneutralized polyacrylic acid of No. 7 shows an excellent deodorizing effect on the malodorous components ammonia, trimethylamine, and isovaleric acid, and also shows a deodorizing effect on nonenal, and sulfide. It showed a slight deodorant effect on hydrogen, acetic acid and acetaldehyde.
NO. The hydrogel body of the cross-linked polyacrylic acid completely neutralized product of No. 8 shows an excellent deodorizing effect on the malodorous components ammonia, trimethylamine, acetic acid, isovaleric acid, and nonenal, and also deodorizes acetaldehyde. It showed an effect and also showed a slight deodorizing effect on hydrogen sulfide.

From the above test results, it was shown that the acrylic acid-based polymer has a deodorizing function.
Among the acrylic acid-based polymers, the water-containing gels of the completely neutralized polyacrylic acid (NO.1) and the partially neutralized polyacrylic acid (NO.2) are ammonia, trimethylamine, and acetic acid, which are the main causes of body odor. , Isovaleric acid and acetic acid have a deodorizing effect, and have been shown to be suitable as a deodorant for the body odor. Further, since it is suitable as a deodorant for body odor, it has been shown that it is particularly suitable as a material for a functional lubricant applied to the body for use.
Among the acrylic acid-based polymers, the powder of the completely neutralized polyacrylic acid (NO.4) shows an excellent deodorizing effect particularly on hydrogen sulfide, and the raw material mainly caused by the hydrogen sulfide. It has been shown that it is suitable as a deodorant for bad odors such as garbage odor, manure odor, and cigarette odor.
Among acrylic acid-based polymers, crosslinked polyacrylic acid completely neutralized product (NO.8) and crosslinked sodium polyacrylate (NO.3) are ammonia, trimethylamine, acetic acid, and isovaleric acid, which are the main causes of body odor. It has been shown that it has a deodorizing effect on acetaldehyde, and is suitable as a deodorant for the body odor and also as a material for a functional lubricant.
Among acrylic acid-based polymers, cross-linked polyacrylic acid is a water-containing gel of unneutralized product (NO.6) and completely neutralized product (NO.8) against nonenal, which is the main cause of aging odor. It has a deodorizing effect and has been shown to be suitable as a deodorant for the aging odor.

According to the present invention, it is possible to provide a deodorant having a simple composition and to provide a functional lubricant having a deodorizing function, so that it can be industrially used.

Claims (1)

A deodorant for deodorizing at least one malodorous component selected from the group consisting of ammonia, trimethylamine, acetic acid, isovaleric acid, acetaldehyde and nonenal.
Contains a hydrogel containing crosslinked polyacrylic acid (salt), which is a water-soluble polymer.
A deodorant characterized in that the crosslinked polyacrylic acid (salt) is a completely neutralized crosslinked polyacrylic acid.