JP2001321429A - Deodorant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a deodorant capable of being used without sense of incongruity even by contacting with a body or particularly effective to deodorize a circumference of the body such as a diaper or the like. SOLUTION: A deodorizing composition is compounded with a α-olefin-maleic anhydride copolymer, further a fatty acid metallic salt, an inorganic metal compound and a carbonyl compound.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to deodorants. More specifically, the present invention relates to a novel deodorant that is effective for deodorizing odors that are familiar to daily life, such as filth, body odor, and indoor odor.

[0002] In recent years, as the standard of living has improved, interest in environmental hygiene has increased, and deodorization and deodorization have become major issues. As a method of reducing malodorous components, including a method of masking odor with a strong fragrance,
Physical methods such as adsorption with a porous adsorbent such as activated carbon, alumina and zeolite; catalytic combustion methods; oxidation methods using ozone; chemical methods such as neutralization methods using chemicals; and biochemistry such as decomposition by bacteria Methods are known.

At present, deodorants around the body include liquid deodorants by spraying, and deodorants that are installed in a room in the form of gel or granules and used. However, the most frequently used water-soluble liquid deodorant wets the surroundings and stains clothes, which is not preferable for nursing articles such as ostomy or diapers that touch the skin or clothes. In addition, any of the sheet impregnated with a deodorant and the activated carbon sheet have a sticky feeling, and especially the activated carbon sheet has no effect on ammonia odor.

[0004] As described above, none of the conventional deodorants has satisfactory performance. In addition, familiar odors that are actually a problem in daily life consist of various components such as acidic odor and basic odor, and it is necessary to realize a deodorant effective for any of these odor components.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a deodorant which is solid at room temperature, can be used without feeling uncomfortable without sticking or causing contamination even when touching the body, and which has excellent deodorizing ability. In particular, the present invention provides a deodorant composition which is effective for deodorizing a body such as a diaper. The present inventor has conducted various studies to solve the above-mentioned problems, and as a result, using a specific maleic anhydride-based copolymer, and furthermore, a superior deodorizing effect by combining a fatty acid metal salt and an inorganic metal compound. The present invention was completed based on the finding that

The present invention provides the following structural units (1) and (2):

Embedded image (Wherein R ₁ is hydrogen or a methyl group, R ₂ is a methoxy group, a methyl group or a vinyl group, provided that when R ₂ is a methoxy group, R ₁ is not hydrogen). The present invention provides a deodorizing composition as follows. The α-olefin-maleic anhydride copolymer which is an active ingredient of the deodorant of the present invention is preferably an isobutylene-maleic anhydride copolymer. Further, it is preferable to mix a fatty acid metal salt and / or an inorganic metal compound, or to further mix a carbonyl compound.

[0007]

DETAILED DESCRIPTION OF THE INVENTION (a) α-Olefin-Maleic Anhydride Copolymer The α-olefin-maleic anhydride copolymer used in the present invention has the following structural units:

[0008]

Embedded image (Wherein R ₁ is hydrogen or a methyl group, R ₂ is a methoxy group, a methyl group or a vinyl group, provided that R ₁ is not hydrogen when R ₂ is a methoxy group). It is united. Of these, in particular the following structural units:

[0009]

Embedded image Is preferred (isobutylene-maleic anhydride copolymer having a molecular weight of 10,000 to 300,000). This copolymer is solid and can be formed into a film or coated on a fibrous material such as a nonwoven fabric. A typical example of such an isobutylene-maleic anhydride copolymer is an alternating copolymer of isobutylene and maleic anhydride, for example, a product having various molecular weights obtained from Kuraray Co., Ltd. under the product name of Isovan. And the like.

[0010] Such high molecular compounds have hitherto been known, but it is not known that they have a deodorizing effect, and no deodorant containing this as an active ingredient.

(B) Fatty acid metal salt In another invention of the present application, a fatty acid metal salt is used in combination with the copolymer. Such fatty acid metal salts include:
A saturated or unsaturated fatty acid metal salt having 1 to 30 carbon atoms is used. Such fatty acid metal salts include saturated fatty acids such as acetic acid, propionic acid, undecylenic acid, palmitic acid, lauric acid, myristic acid, palmitic acid, stearic acid, and behenic acid; or oleic acid, sorbic acid, linoleic acid, linolenic acid, Metal salts of unsaturated carboxylic acids such as ricinoleic acid and arachidonic acid are preferred.

In the present invention, these fatty acids and divalent or trivalent
Metal salts with valent metals are used, such as zinc, copper, iron,
Metal salts such as molybdenum, cobalt, aluminum, titanium, manganese, nickel, and silver are exemplified. Of these, zinc salts and aluminum salts are particularly preferred. The amount of the fatty acid metal salt is 1 to 120 parts by weight, preferably 2 to 50 parts by weight, based on 100 parts by weight of the α-olefin-maleic anhydride copolymer.

(C) Inorganic Metal Compound In the present invention, an inorganic metal compound may be combined with the copolymer in place of or in combination with the fatty acid metal. Examples of such inorganic metal compounds include oxides, hydroxides, and inorganic metal salts of metals such as calcium, magnesium, zinc, aluminum, copper, iron, and titanium. Therefore, as oxides, CaO, MgO, Al
₂ O ₃ , ZnO, CuO, Cu ₂ O, FeO, Fe ₂ O ₃ , TiO ₂ ; hydroxides include, for example, Ca (OH) _2, and inorganic metal salts include chlorides of the metals; Sulfate, nitrate and the like can be mentioned. Among these, preferred are ferrous sulfate, iron hydroxide, zinc hydroxide, titanium hydroxide, zinc hydroxide, titanium hydroxide, copper sulfate, copper nitrate, copper hydroxide, titanic acid and the like. Is mentioned. The amount of the inorganic metal compound is based on 100 parts by weight of the copolymer.
It is 1 to 200 parts by weight, preferably 2 to 100 parts by weight.

(D) Carbonyl compound In still another invention of the present application, a carbonyl compound such as ketocarboxylic acid or aldehyde acid is used in combination with the copolymer. Such carbonyl compounds include glycerin aldehyde, pyruvic acid, levulinic acid, aldehyde nonanoic acid, glyoxylic acid, aldehyde acid and the like. The amount of the carbonyl compound is 1 to 100 parts by weight of the α-olefin-maleic anhydride copolymer.
It is 200 parts by weight, preferably 5 to 80 parts by weight.

[0015] In the deodorant of the present invention, the copolymer exhibits excellent adsorption power and deodorizing effect mainly on substances causing odor around the body, such as amines and ammonia which is a decomposition product thereof. On the other hand, fatty acid metal salts, inorganic metal compounds and carbonyl compounds absorb sulfur-based odor causing substances such as hydrogen sulfide and mercaptan. Therefore, for diapers and the like, most of which are amine compounds,
Even if only the α-olefin-maleic anhydride copolymer is used, a sufficient deodorizing effect can be obtained. In addition, it is preferable to use the deodorant of the present invention in which a fatty acid metal salt, an inorganic metal compound, and a carbonyl compound are used in combination as a malodor causing substance having many sulfur-based malodors. Thus, it is presumed that the combined use of the copolymer and a fatty acid metal salt or the like can reliably remove both nitrogen-based and sulfur-based odors.

In the production of the deodorizing composition, the solvent used for mixing the deodorizing components such as α-olefin-maleic anhydride copolymer, fatty acid metal salt, inorganic metal compound and carbonyl compound is dissolved. It is not particularly limited as long as it performs the reaction, and examples thereof include dimethylformamide, dimethylsulfoxide, and water. The amount of these solvents used is 2 to 50 parts per 1 part by weight of the deodorant component.
Parts by weight are preferred.

The deodorizing composition of the present invention is further mixed with various adhesive materials for adjusting the feel and appearance, or for adhering to and applying to a substrate made of a sheet-like or thread-like molded product. May be. As such a material, an appropriate polymer compound can be used, and examples thereof include a vinyl acetate-acrylic copolymer, polyvinyl alcohol, a urethane-based resin, an ethylene-vinyl acetate copolymer, and carboxymethyl cellulose. . These may be used alone or as a mixture. The amount of the adhesive is preferably 10 to 200 parts by weight based on 100 parts by weight of the deodorant component.

In actual use, the deodorizing composition is applied or impregnated in layers on substrates having various shapes to increase the surface area of the deodorizing composition and improve the deodorizing effect. Is preferred. Such substrates include non-woven fabrics
(Cotton, rayon, polypropylene, polyethylene, polyester, acrylic fiber), woven fabric, thread, monofilament and other fibrous materials, granular materials, paper or zeolite, sepiolite, diatomaceous earth, activated carbon and other porous materials In particular, a nonwoven fabric made of cotton has good hygroscopicity and is suitable. In the case of a paper-like material, a material in which a porous substance and pulp are used in combination is preferable.

The amount of the deodorant composition used is 0.1 to 50 parts by weight, preferably 10 to 2 parts by weight, per 100 parts by weight of the base material.
0 parts by weight. The amount of the deodorizing composition applied to or impregnated on these substrates is about 0.1 to 100 g / m ^{2 in} the case of a sheet in terms of area ratio. Also, thread-like, granular
In the case of (powder), it is about 0.1 to 50% by weight based on the base material.

Further, the deodorant composition may be incorporated into nonwoven fabric or paper. The mixing ratio of the deodorant component to the nonwoven fabric and paper is 0.1 to 50 parts by weight, preferably 1 to 20 parts by weight, based on 100 parts by weight of these components. If the amount is less than this, the deodorizing effect cannot be obtained.

The raw material of paper is preferably pulp as a raw material, and the proportion of pulp or linter in the whole paper is 50 to 99% by weight. Pulp and non-woven fabric
Cotton, polyethylene, polypropylene, acrylic,
Materials such as rayon are preferable, and materials using at least 30% by weight of pulp and cotton are preferable. In this way, the odor can be removed comfortably without wetting the futon or the like unlike the conventional liquid deodorant.

Other forms of the actual use of the deodorant composition include dispersion and mixing with various polymer compounds or mutual dissolution with a base polymer to form a polymer blend. It may be formed into a film or the like.

For example, 0.01 to 30 parts by weight, preferably 0.1 to 6 parts by weight, of 100 parts by weight of an olefin-based polymer such as polyethylene or polypropylene is blended and molded by a known method. It is preferable to use a film. If the amount of the deodorizing composition is less than this, the intended deodorizing effect cannot be obtained, while if it is more than this, the resins do not dissolve each other and film formation is difficult. When dust and dirt are put in a bag made of such a film and sealed, when an odor-causing substance permeates the film from the contents, it is absorbed and decomposed by the deodorant in the film, and no bad odor is released to the outside. Such a film is particularly useful for a garbage bag, a waste container, a deodorizing bag for diapers after use, a bag for holding raw fish and the like.

(Production method) In order to produce the deodorant of the present invention, first, a predetermined amount of an α-olefin-maleic anhydride copolymer, a fatty acid metal salt, an inorganic metal compound and the like are mixed in a solvent. And heat to dissolve. Next, an adhesive such as a vinyl acetate-acrylic copolymer emulsion is added, if necessary, and uniformly mixed to obtain a solution of the deodorant composition. This solution is impregnated or applied to a sheet-like or thread-like base material and then heated and dried to obtain a deodorant.

[0025]

Next, the present invention will be described more specifically based on examples.

Example 1 45 g of pulp, isobutylene-maleic anhydride copolymer (manufactured by Kuraray Co., Ltd .: Isoban-
06) 5 g, polyvinyl alcohol 0.1 g, zinc oxide 0.9 g and polyethylene oxide 0.9 g were added to 10 L of water.
And stirred and dispersed by a mixer. The paper was then made using a papermaking machine. The sample was dried to obtain a paper 50 g / ^{m 2.}

Examples 2 to 4 Papermaking was carried out in the same manner as in Example 1 except for the components and compositions shown in Table 1.

(Test) A test container (1 L) was filled with 50 ammonia.
0 ppm and 50 ppm of hydrogen sulfide were sealed, and the test paper obtained in the example was put as a deodorant test piece (10 cm × 10 cm) and sealed. The gas concentration in the test container after each elapsed time (0 to 120 minutes) was measured.

[0029]

[Table 1]

Example 5 20 g of an isobutylene-maleic anhydride copolymer (Isoban-06 manufactured by Kuraray Co., Ltd.), 2 g of zinc oxide, 20 g of a polyethylene-vinyl acetate copolymer
And 958 g of polyethylene were mixed and dispersed, put into a kneader, heated and melted at 180 ° C., and a film (thickness: 50 μm) was obtained by an inflation method. A bag (10 × 10 cm) was prepared using this film. Filter paper (5 × 5c
m) impregnated with 2 ml of 1/10 mol ammonia water was placed in the above bag, sealed, and further sealed in a 5 L glass bottle. The measured ammonia concentration in the glass bottle after a predetermined time was as follows.

[0031]

[Table 2]

Examples 6 to 12 A blown film was formed in the same manner as in Example 5 except that a base resin and a deodorant component were used according to the compositions shown in Table 3 below, and the ammonia concentration in the glass bottle was measured. Was evaluated.

[0033]

[Table 3]

[0034]

The deodorant of the present invention is solid and can be used without feeling uncomfortable without stickiness or contamination even when touching the body. In particular, it is a deodorant that can comfortably absorb odors around us, such as diapers.

 ──────────────────────────────────────────────────続 き Continuing on the front page F term (reference) 4C080 AA05 AA06 BB02 CC04 CC08 CC13 CC15 HH05 JJ06 KK08 LL03 LL10 MM40 NN01 NN13 NN14 NN24 NN25 NN26 NN27 NN28 QQ03 4C083 AB211 AC211 AC241 AD031 AD091AD031 CA50 DA06 4L055 AA01 AA08 AF16 AF21 AG15 AG16 AG17 AG19 AG20 AG34 AG58 AG70 AG88 AG89 AH01 AH50 BD10 FA20 GA26

Claims (7)

[Claims] 1. Structural units of the following formulas (1) and (2): (Wherein R ₁ is hydrogen or a methyl group, R ₂ is a methoxy group, a methyl group or a vinyl group, provided that when R ₂ is a methoxy group, R ₁ is not hydrogen). A deodorizing composition which is to be used. 2. The deodorizing composition according to claim 1, further comprising a fatty acid metal salt and / or an inorganic metal compound. 3. The deodorizing composition according to claim 2, wherein the metal salt is a zinc salt. 4. The deodorizing composition according to claim 1, further comprising a carbonyl compound. 5. A method comprising blending at least one polymer compound selected from a vinyl acetate-acrylic copolymer, a polyvinyl alcohol, a urethane resin, an ethylene-vinyl acetate copolymer and carboxymethylcellulose. Item 6. The deodorizing composition according to any one of Items 1 to 4. 6. A deodorant obtained by adhering the deodorizing composition according to any one of claims 1 to 5 to a substrate made of fibrous material, granular material, paper, nonwoven fabric, woven fabric or porous material. 7. A polymer film comprising the deodorizing composition according to claim 1.