JPH10204211A - Gel-form deordorant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a gel-form deordorant efficiently removing aldehydes for a long period, and also exhibiting no adverse effect on the human body by incorporating a water-based gel-form base material with a compound bearing an -NH- bond in the molecule. SOLUTION: This gel-form deordorant is obtained by the following procedure: (A) a water-based gel-form base material, e.g. a locust bean gum is blended with (B) 0.1-35wt.% of a compound bearing an -NH- bond, preferably an amino bond, an urea bond, an amide bond or an imide bond in the molecule, e.g. urea and (C) as necessary, a gel strength enhancing agent, a coloring agent, an antimicrobial/antifungal agent, an antioxidant, water, etc.; the resultant blend is heated under stirring to form a solution, and the solution is subsequently poured into a given vessel, left to stand and cooled to effect gelation, thus giving the objective gel-form deordorant made of the water-based gel-form base material containing the ingredient B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a gel deodorant effective for deodorizing aldehydes, especially formaldehyde.

[0002]

2. Description of the Related Art As life becomes richer, the demand for adsorbents against malodors is increasing, and deodorants are being actively developed. Conventionally, activated carbon has been widely used because of its relatively good adsorption of malodorous substances in the gas phase. However, the activated carbon adsorbent has a drawback that it has poor adsorptivity to aliphatic aldehydes such as formaldehyde, acetaldehyde, and acrolein contained in tobacco smoke, food odor, and alcoholic odor.

Recently, furniture using resin-processed plywood or the like has become widespread. However, since resin containing formaldehyde is used for adhesives, preservatives, paints, and the like during manufacturing,
Formaldehyde, which is generally called formalin, is emitted from furniture manufactured using the plywood. This formalin is a problem because it permeates the eyes and, depending on the constitution, causes allergic symptoms. Therefore, various treatment methods during or after the production of furniture have been studied to prevent the emission of formalin, but no simple and appropriate solution for preventing the generation has been found. Also,
Conventionally, paper obtained by impregnating paper with an aldehyde absorbent has been used to adsorb and remove the generated aliphatic aldehyde. However, when the aldehyde absorbent is added to the paper stock and made into paper, or contained in fibers or foams, the paste component or the resin itself acts as a binder. It is coated by the component. In this case, the contact with the odorous component is not direct, and it cannot be said that the state is such that the original performance of the deodorant can be sufficiently exhibited.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a deodorant free from the above-mentioned problems.

[0005]

Means for Solving the Problems As a result of intensive studies to solve the above problems, a gel deodorant consisting of an aqueous gel base material containing a compound having a -NH- bond in the molecule has been found. Thus, the present invention has been completed. The present invention
By using an aqueous gel-like base material as a support for a deodorant, an adsorbent that efficiently removes aldehydes over a long period of time and has no adverse effect on the human body is provided.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail. The aqueous gel base material is not particularly limited, but synthetic polymers such as polyvinyl alcohol, imidized isoban, polyvinylpyrrolidone, polyvinyl methacrylate, polyvinyl methyl ether, acetoacetylated PVA, polyacrylic acid and salts thereof, carrageenan, locust Natural gums such as bean gum and xanthan gum are preferably used. Further, in order to prevent water separation when the temperature is returned to room temperature after freezing, a cellulose derivative such as carboxymethylcellulose, methylcellulose, hydroxyethylcellulose, or hydroxypropylmethylcellulose may be added.

From the viewpoint of the shape retention of the gel, the amount of the synthetic polymer used is preferably 1 to 50% by weight based on the total weight of the gel, and 3 to 3% by weight.
0 wt% is more preferable, and 5 to 20 wt% or less is most preferable. The amount of natural gums used is 0.5 to the total weight of the gel.
It is preferably at most 30% by weight, more preferably at most 1 to 10% by weight, most preferably at most 2 to 8% by weight. The use amount of the thickener is preferably 6% by weight or less, particularly preferably 4% by weight or less. The use amount of the cellulose derivative is preferably 3% by weight or less, particularly preferably 1.5% by weight or less.

The compound having an -NH- bond in the molecule is preferably a compound having an amino bond, a urea bond, an amide bond or an imide bond (hereinafter abbreviated as "aldehyde absorbent"). Examples of the compound having an amino bond include hydroxylamine, chloramine, ammonia,
Methanolamine, ethanolamine, dimethylamine, diethylamine, isopropylamine, butylamine, proline, hydroxyproline, dicyanodiamide, ethyleneimine, ethylenediamine, propylenediamine, diethylenetriamine, 2-diethylaminoethanol, 2-dimethylaminoethanol, 1,2-diamino Propane, 1,3-diaminopropane, triethylenetetramine, tetraethylenepentamine, iminobispropylamine, tetramethylenediamine, guanidine carbonate, glycine, alanine, sarcosine, glutamic acid, hexamethylenediamine, melamine, morpholine,
2-amino-4,5-dicyanoimidazole, 3-azahexane-1,6-diamine, hexamethylenediamine, 2-acrylamido-2-methylpropanesulfonic acid, α-amino-ε-caprolactam, acetoguanamine, guanine, acetaldehyde Ammonia, 4,7-
Examples include diazadecane-1,10-diamine, pyrrolidine, piperidine, piperazine, polyethyleneimine, polyallylamine, polyvinylamine, and aminobenzoate. Examples of the compound having a urea bond include urea, thiourea, methyl urea, ethyl urea, dimethyl urea, diethyl urea, ethylene urea, acetyl urea, guanyl urea, guanyl thiourea, azodicarbonamide, glycolyl urea, and acetyl urea. . Examples of the compound having an amide bond include formamide, acetamide, benzamide, oxamide, pyrrolidone, pyrrolidone carboxylic acid, oxamic acid, succinamide, dicyandiamide, oxazolidone, and malonamide. Examples of the compound having an imide bond include succinimide, phthalimide, maleimide, succinimide, hydantoin,
Barbituric acid, 1-methylol-5,5-dimethylhydantoin, isocyanuric acid and the like. These compounds are used alone or in combination of two or more.

The gel-like deodorant of the present invention is characterized in that one or more of the above-mentioned aldehyde absorbents is added to an aqueous gel-like base material in an amount of 0.1 to 35.
%, Preferably 1 to 20% by weight.
If it is less than 0.1% by weight, the deodorizing effect of the aldehyde is hardly obtained, and if it is more than 35% by weight, the shape retention of the gel is impaired.

[0010] The gel base material of the present invention may be added with an essential oil-based fragrance, an emulsifier for dispersing the fragrance, and molded into a predetermined shape to form a gel fragrance.

As the essential oil-based flavor, for example, lemon oil, orange oil, lime oil, lavender oil, jasmine oil, eucalyptus oil, pine oil, hinoki oil, hiba oil and the like are used. These flavors are used alone or in combination of two or more.

Examples of the emulsifier include anionic surfactants such as alkyl benzene sulfonates and α-olefin sulfonates; nonionics such as ethylene oxide adducts of nonylphenol, sorbitan fatty acid esters and ethylene oxide adducts thereof, and ethylene oxide adducts of higher alcohols. A surfactant is used. These emulsifiers are used alone or in combination of two or more.

The gel deodorant of the present invention may contain, in addition to the above components, a gel strength enhancer such as potassium chloride, a coloring agent, an antibacterial / deodorant, an antioxidant, and the like. Can be.

To prepare a gel base material containing the aldehyde absorbent of the present invention, for example, polyvinyl alcohol, imidized isoban, carrageenan, locust bean gum, gel strength enhancer, aldehyde absorbent, colorant, and antibacterial agent , An antiseptic agent and the like are mixed with water, and dissolved by heating while stirring to prepare a solution. Next, after mixing the oily fragrance, the emulsifier, and the antioxidant, the mixture is added to the above solution and mixed well. Then, the mixture is poured into a predetermined container, and is allowed to cool and gel.

[0015]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to the examples. In the examples, "%" and "part" represent "% by weight" and "part by weight", respectively, unless otherwise specified.

Example 1 2 parts of carrageenan, 1.5 parts of locust bingham, 0.5 part of polyvinyl alcohol having a polymerization degree of 1700 and a saponification degree of 99.7%, and 50 parts of water were mixed and dissolved by stirring at 90 ° C. Thus, an aqueous sol was obtained. Further, 10 parts of urea as an aldehyde absorbent, 7 parts of fragrance, 0.1 part of nonionic surfactant
, 0.1 part of an antioxidant and 29 parts of water were mixed and dissolved, and then added to the aqueous sol, followed by thorough mixing at 50 ° C.
The mixture was poured into a container and allowed to cool to obtain a gel deodorant. 1. 10 g of the gelled deodorant obtained was
The pieces were placed on three 7 mm thick, 10 × 15 cm, ordinary plywood (moisture content of 12% or less) and placed in a 15 liter desiccator. A petri dish containing 300 ml of water was placed on the bottom of the desiccator, and formaldehyde generated from the test piece was absorbed at 20 ° C. for 24 hours. The amount of formaldehyde generated was 3.5 mg / l as determined by colorimetry using the acetylacetone method.

EXAMPLE 2 2 parts of carrageenan, 1 part of locust bingham, 1 part of imidized isoban and 50 parts of water were mixed and dissolved by stirring at 90 ° C. to obtain an aqueous sol. Further, 10 parts of melamine as an aldehyde absorbent, 7 parts of perfume, 0.1 part of nonionic surfactant, 0.1 part of antioxidant and 29 parts of water were mixed and dissolved, and then added to the aqueous sol. , 50 ° C. The mixture was poured into a container and allowed to cool to obtain a gel deodorant. When the deodorizing performance of the gelled deodorant was evaluated in the same manner as in Example 1, the amount of formaldehyde generated was 4.8 mg / l.

Example 3 1.5 parts of carrageenan, 1.5 parts of locust bingham, 0.5 part of hydroxypropylmethylcellulose and 50 parts of water were mixed and dissolved by stirring at 60 ° C. to obtain an aqueous sol. Further, 15 parts of succinimide as an aldehyde absorbent, 7 parts of perfume, 0.1 part of nonionic surfactant, 0.1 part of antioxidant and 29 parts of water were mixed and dissolved.
Add to the aqueous sol and mix well at 60 ° C. The mixture was poured into a container and allowed to cool to obtain a gel deodorant. When the deodorizing performance of the gel deodorant was evaluated in the same manner as in Example 1, the amount of formaldehyde generated was 3.0 mg / l.

Example 4 5 parts of imidized isoban (manufactured by Kuraray), 1 part of ammonia and 100 parts of water were mixed, dissolved by stirring at 95 ° C., and then cooled to obtain an aqueous sol. Further, 25 parts of succinimide as an aldehyde absorbent, 10 parts of perfume, 0.1 part of nonionic surfactant, 0.1 part of antioxidant and 30 parts of water were mixed and dissolved, and then the aqueous sol was dissolved. And mixed well at room temperature. To this mixture, 0.2 parts of glyoxal was added, and the mixture was poured into a container and allowed to cool, whereby a gel deodorant was obtained. When the deodorizing performance of the gel deodorant was evaluated in the same manner as in Example 1, the amount of formaldehyde generated was 5.
It was 0 mg / l.

Example 5 An aqueous sol was obtained by mixing 10 parts of polyvinyl alcohol having a polymerization degree of 1700 and a saponification degree of 99.8% with 50 parts of water and stirring at 90 ° C. to dissolve. Further, 8 parts of ethylene urea as an aldehyde absorbent, 7 parts of a fragrance, 0.1 part of a nonionic surfactant, 0.1 part of an antioxidant and 29 parts of water were mixed and dissolved. In addition, it was mixed well at 60 ° C. The mixture was poured into a container and left at 5 ° C. to obtain a gel deodorant. When the deodorant performance of the gel deodorant was evaluated in the same manner as in Example 1, the amount of formaldehyde generated was 5.5 mg / l.

Comparative Example 1 A gel deodorant was obtained in the same manner as in Example 1 except that no aldehyde absorbent was added. When the deodorizing performance of the gel deodorant was evaluated in the same manner as in Example 1, the amount of formaldehyde generated was 38 mg / l.

[0022]

The gel deodorant of the present invention can easily absorb and remove toxic formaldehyde and the like. Also,
By putting it in a deodorant container as a deodorant material, it has a great effect of absorbing and preventing the emission of formalin odors emitted from furniture such as cupboards, and it can solve the problem of formalin odor. Useful for

Claims (2)

[Claims] 1. A gel deodorant comprising an aqueous gel base material containing a compound having a —NH— bond in a molecule. 2. The gel deodorant according to claim 1, wherein the compound having a -NH- bond in the molecule is a compound having an amino bond, a urea bond, an amide bond or an imide bond.