JP4226370B2 - Deodorant treatment - Google Patents

Description

【００６４】
実施例１〜５は、アルカリ緩衝剤、多価金属塩及び充填剤としての硫酸ナトリウムという組み合わせになっており、硬度成分の捕捉能が高いゼオライトやポリアクリル酸ナトリウムなどは含んでいない。実施例１〜５は、脂肪酸汚れがスカム化し、その脂肪酸汚れの沸点が上昇したために、肌着の除臭性は高くなっていることが確認できた。
【００６５】
それに対し、比較例１では、ゼオライトが水中の硬度成分を捕捉し、アルカリ緩衝剤である炭酸ナトリウムで処理液が高ｐＨになるので、脂肪酸の自己乳化による衣料からの脂肪酸汚れの脱離は促進されるものの、遊離脂肪酸が増加したことが原因となって実施例よりも除臭性は低下した。比較例２では、アルカリ緩衝剤による脂肪酸の自己乳化も期待できないので、肌着の除臭性も非常に悪くなっている。比較例３、４では、界面活性剤が含まれているので、洗浄率は高いと思われるが、遊離脂肪酸を落とせないので肌着の除臭性に関しては低下している。
【００６６】
以上の結果から、汚れが目に見えないような肌着などの除臭処理に際しては、本発明の処理剤は、極めて優れた脂肪酸臭の除臭性能を有していることが示された。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a treatment agent for the purpose of deodorization.
[0002]
[Prior art]
Due to the recent trend toward a nuclear family and a declining birthrate, changes in washing behavior from “washing when dirty” to “washing when worn”, and recommendations for “separate washing” by washing machine manufacturers, visible stains It has been pointed out that there are an increasing number of occasions where laundry is washed without clothing. In the case of performing such washing, there are an increasing number of cases where washing is performed only with tap water without adding detergent, so-called washing washing.
[0003]
As a result of repeated studies on washing with water, the present inventors have confirmed that there is no particular problem with respect to removal of dirt when only invisible dirt is attached. However, it has been confirmed that when washing with water is performed, there is a drawback that the generation of an unpleasant odor (bad odor) cannot be suppressed.
[0004]
This bad odor is considered to be caused by free fatty acid remaining on clothing or the like, particularly when the cleaning power of fatty acid soil is insufficient among sebum soil. Patent Document 1 discloses a detergent composition free from off-flavors in washed clothes made of a synthetic surfactant, a specific fatty acid salt and a sulfite, but contains a surfactant and is a concept of washing with water. Not suitable for. To improve the detergency of fatty acid stains, the self-emulsification of fatty acids by alkaline agents is promoted while scumming is suppressed by capturing polyvalent metal ions such as calcium ions and magnesium ions with zeolite and water-soluble polymers. Is effective. However, in order to suppress scumming, a large amount of zeolite or a polymer compound is required, which is not preferable from the viewpoint of cost.
[0005]
[Patent Document 1]
Japanese Unexamined Patent Publication No. 63-15899
[0006]
[Problems to be solved by the invention]
The present invention seeks to eliminate the foul odor seen in washing and washing with only the minimum necessary base. That is, an object of the present invention is to provide a means for eliminating malodors without using a base such as a surfactant, a polymer compound, or zeolite.
[0007]
[Means for Solving the Problems]
As a result of intensive studies to overcome this problem, the present inventors have found that, by using a combination of an alkali buffer and a polyvalent metal salt, scumming of fatty acid stains can eliminate bad odor, and the present invention. It came to complete.
[0008]
That is, the present invention contains 10 to 95% by weight of an alkali buffer and 1 to 90% by weight of a water-soluble polyvalent metal salt, and the total amount of the alkali buffer and the water-soluble polyvalent metal salt is 30 to 100% by weight. It relates to a certain deodorizing treatment agent.
[0009]
The present invention also relates to a method for deodorizing textile products using a cleaning medium containing water having a polyvalent metal ion concentration of 2 to 8 mmol / liter and a pH of 8 to 13.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
In the treatment agent of the present invention, it is important to make the treatment liquid at the time of treatment alkaline and to make the treatment solution contain polyvalent metal ions that scuminate fatty acids.
[0011]
Therefore, as the alkali buffer in the present invention, an alkali metal salt of carbonate or silicate is preferable because it shows a suitable pH buffer region in the treatment liquid. From the viewpoint of solubility, sodium carbonate and potassium carbonate are particularly preferable. The alkaline buffer may consist of a single component or a combination of multiple components.
[0012]
The blending amount of the alkali buffering agent is required to have at least an alkali buffering capacity sufficient to counteract the amount of acid carried by sweat contained in the clothing. Therefore, the blending amount of the alkaline buffer necessary for keeping the treatment solution alkaline is affected by the alkali buffering ability of the alkali buffering agent and the amount of acid carried, but the larger the blending amount of the alkaline buffering agent, the greater It is more preferable for exhibiting a deodorizing effect. However, if the amount of the alkaline buffer is too large, the pH of the treatment liquid becomes high, which is not preferable in terms of safety. From this viewpoint, the blending amount of the alkaline buffer is 10 to 95% by weight, preferably 20 to 90% by weight, more preferably 30 to 85% by weight, particularly preferably 40 to 80% by weight, and most preferably 50 to 50%. 75% by weight. The alkaline buffer may consist of a single component or a combination of multiple components.
[0013]
The water-soluble polyvalent metal salt in the present invention is one in which all or part of the water-soluble polyvalent metal salt is dissolved in the treatment liquid to elute the polyvalent metal ions. Examples of the polyvalent metal ion include calcium, magnesium, aluminum, iron, copper, chromium, manganese and the like. Trivalent metal ions such as aluminum are preferable from the viewpoint of scum forming ability with fatty acids, but alkaline earth metals are particularly preferable from the viewpoint of safety, and calcium ions and magnesium ions are most preferable. Examples of counter ions include carbonate ions, sulfate ions, hydrogen carbonate ions, sulfite ions, hydrogen sulfate ions, phosphate ions, halogen ions, and the like that form a water-soluble salt with the metal ions. Higher properties are preferred. Accordingly, particularly preferred polyvalent metal salts include halogenated alkaline earth metal salts such as chloride, bromide, iodide and fluoride (for example, calcium chloride or magnesium chloride). The water-soluble polyvalent metal salt may be composed of a single component or a combination of a plurality of components.
[0014]
As a compounding amount of the water-soluble polyvalent metal salt, a necessary and sufficient amount sufficient to scumate the fatty acid contained in clothing or the like may be blended. Therefore, the blending amount of the polyvalent metal salt is influenced not only by the solubility and scumability of the polyvalent metal salt, but also by the amount of fatty acid stains on clothing and the like and the hardness of tap water. The larger the amount of the polyvalent metal salt, the better the scumming is promoted. However, it is not preferable that the scum is so severe that the dirt is visible. Therefore, the blending amount of the polyvalent metal salt is 1 to 90% by weight, preferably 10 to 80% by weight, more preferably 15 to 70% by weight, particularly preferably 20 to 60% by weight, and most preferably 25 to 50% by weight. %.
[0015]
The total content of the alkali buffer and the polyvalent metal salt in the treatment agent is 30 to 100% by weight, preferably 40% by weight or more, more preferably 50% by weight or more, and particularly preferably 60% by weight. Above, most preferably 75% by weight or more.
[0016]
The treatment agent of the present invention can contain water-soluble salts other than the alkali buffer and polyvalent metal salt described above. For example, water-soluble inorganic salts (for example, alkali metal salts, ammonium salts, or amine salts) such as sulfuric acid, hydrogen carbonate, sulfurous acid, hydrogen sulfate, and phosphoric acid can be given. Further, alkali metal halide salts (for example, sodium salt or potassium salt) such as chloride, bromide, iodide, and fluoride can be mentioned. Of these, the sodium and potassium salts of sulfate and sulfite are preferred.
[0017]
The water-soluble salts other than the alkali buffer and the polyvalent metal salt may be composed of a single component or a plurality of components.
[0018]
Examples of the low molecular weight water-soluble organic acid salts include carboxylic acid salts such as citrate and fumarate. In addition, methyliminodiacetate, iminodisuccinate, ethylenediamine disuccinate, taurine diacetate, hydroxyethyliminodiacetate, β-alanine diacetate, hydroxyiminodisuccinate, methylglycine diacetate, glutamate diacetate , Asparagine diacetate, serine diacetate and the like. However, some organic acid salts have a high chelating ability and may inhibit the expression of the function of the present invention.
[0019]
The content of water-soluble salts other than alkali buffers and polyvalent metal salts is preferably 70% by weight or less, more preferably 60% by weight or less, still more preferably 50% by weight or less, and particularly preferably 40% by weight or less. Most preferably, it is 25% by weight or less.
[0020]
When the treatment agent of the present invention takes a granular form, it is preferable that a small amount of a surfactant is blended in terms of increasing the dispersibility of the slurry during production and the drying efficiency of spray drying. In addition, a surfactant with low hard water resistance such as sodium alkyl sulfate forms a complex with the polyvalent metal ion in the treatment solution and inhibits the expression of the function of the present invention. The more preferable. Accordingly, the blending amount of the surfactant is 5% by weight or less, preferably 3% by weight or less, more preferably 1% by weight or less, particularly preferably 0.1% by weight, and most preferably It is not included.
[0021]
As the surfactant, for example, one or more selected from the group consisting of an anionic surfactant, a nonionic surfactant, a cationic surfactant and an amphoteric surfactant can be used. Examples of the anionic surfactant include alkylbenzene sulfonate, alkyl or alkenyl ether sulfate, α-olefin sulfonate, α-sulfo fatty acid salt or ester thereof, alkyl or alkenyl ether carboxylate, amino acid type surfactant And N-acylamino acid type surfactants. In particular, linear alkylbenzene sulfonate having 10 to 14 carbon atoms, alkyl sulfate or alkyl ether sulfate having 10 to 18 carbon atoms, and counter ions include alkali metals such as sodium and potassium, monoethanolamine, diethanolamine and the like Are preferred.
[0022]
Furthermore, in order to obtain an antifoaming effect, a fatty acid salt can be used in combination. The carbon number of a preferable fatty acid is 12-18.
[0023]
Examples of the nonionic surfactant include polyoxyethylene alkyl or alkenyl ether, polyoxyethylene alkyl or alkenyl phenyl ether, polyoxyethylene polyoxypropylene alkyl or alkenyl ether, and polyoxyethylene polyoxypropylene glycol represented by trademark Pluronic , Polyoxyethylene alkylamine, higher fatty acid alkanolamide, alkyl glucoside, alkyl glucose amide, alkyl amine oxide and the like. Among them, those having high hydrophilicity and those having a low liquid crystal forming ability when mixed with water or those that do not produce liquid crystal are preferable, and polyoxyalkylene alkyl or alkenyl ether is particularly preferable. Preferably, the alcohol ethylene has 10 to 18 carbon atoms, preferably 12 to 14 carbon atoms, and an average added mole number of 5 to 30, preferably 7 to 30, more preferably 9 to 30 and more preferably 11 to 30. An oxide (hereinafter referred to as EO) adduct, an EO adduct of alcohol having 8 to 18 carbon atoms, and a propylene oxide (hereinafter referred to as PO) adduct are preferable. As the addition order, one added with PO after adding EO, one added with PO after adding PO, or one added randomly with EO and PO can be used. Is a general formula in which EO is added, PO is added as a block, and EO is added as a block:
R-O- (EO) _X -(PO) _Y -(EO) _Z -H
[Wherein R is a hydrocarbon group, preferably an alkyl or alkenyl group having 8 to 18 carbon atoms, more preferably 10 to 16 carbon atoms, especially 12 to 15 carbon atoms, EO is an oxyethylene group, PO is an oxypropylene group, X, Y and Each Z represents the average number of moles added. ]
Among these, the most preferable average added mole number relationship is X> 0, Z> 0, X + Y + Z = 6 to 14, X + Z = 5 to 12, Y = 1 to 4 It is.
[0024]
Examples of the cationic surfactant include quaternary ammonium salts such as alkyltrimethylammonium salts.
[0025]
Examples of amphoteric surfactants include carbobetaine type and sulfobetaine type.
[0026]
When the treatment agent of the present invention takes a granular form, it is preferable that a small amount of a water-soluble polymer compound is blended as a role of the binder component of the particles. In addition, since polycarboxylic acid-based polymers have the ability to capture calcium and magnesium, the smaller the blending amount, the better the function of the present invention. Therefore, the amount of the water-soluble polymer compound is 3% by weight or less, preferably 2% by weight or less, more preferably 1% by weight or less, and particularly preferably 0.1% by weight, Most preferably not.
[0027]
The water-soluble polymer compound is, for example, selected from the group consisting of carboxylic acid polymers, cellulose derivatives such as carboxymethyl cellulose, aminocarboxylic acid polymers such as polyglyoxylate and polyaspartate, soluble starch, saccharides, etc. One or more of these can be exemplified as preferred. Other examples include polyvinyl pyrrolidone (PVP), polyethylene glycol (PEG), and polypropylene glycol (PPG). PVP is preferred as a color transfer inhibitor, and PEG and PPG improve paste viscosity characteristics generated when the powder contains water. This is preferable.
[0028]
The weight average molecular weight of these water-soluble polymer compounds is preferably from 1,000 to 300,000, more preferably from 2,000 to 100,000, further preferably from 2,000 to 80,000, particularly preferably from 5,000 to 50,000, and from 6,000 to 20,000 is particularly preferred.
[0029]
As molecular weight measurement method,
1. Conversion standard material: Polyacrylic acid (AMERICAN STANDARDS CORP)
2. Eluent: 0.2 mol / L phosphate buffer / CH3 CN: 9/1 (volume ratio)
3. Column: PWXL + G4000PWXL + G2500PWXL (manufactured by Tosoh Corporation)
4). Detector: RI
5. Sample concentration: 5 mg / mL
6). Injection volume: 0.1 mL
7). Measurement temperature: 40 ° C
8). Flow rate: 1.0 mL / min
To do.
[0030]
The treatment agent of the present invention can contain a water-insoluble substance. As the water-insoluble substance, crystalline aluminosilicate, amorphous aluminosilicate, silicon dioxide, hydrated silicate compound, pearlite, bentonite and other clay compounds can be used. As for the aluminosilicate, an amorphous one has a low calcium scavenging ability, so that it is difficult to inhibit the effect of the present invention. Moreover, it is more preferable than crystalline aluminosilicate from the point of having oil absorption ability.
[0031]
Examples of the amorphous aluminosilicate and amorphous silica include, for example, JP-A No. 62-191417, page 2, lower right column, line 19 to page 5, upper left column, line 17 (particularly the initial temperature is 15 to 60 ° C. In the lower right column, line 20 to page 5, lower left column, line 11 (particularly the oil absorption is preferably 170 mL / 100 g). JP-A-9-132794, column 17, line 46 to column 18, line 38, JP-A-7-10526, column 3, line 3 to column 5, line 9, Amorphous aluminosilicate described in JP-A-6-227811, column 2, line 15 to column 5, line 2 and JP-A-8-119622, column 2, line 18 to column 3, line 47 (Oil absorption capacity 285 mL / 100 g) and the like. For example, “Toceal NR” (manufactured by Tokuyama Soda Co., Ltd .: oil absorption capacity of 210 to 270 mL / 100 g), “FLORITE” (same as above: oil absorption capacity of 400 to 600 mL / 100 g), “TIXOLEX25” (manufactured by Han France Chemical Co., Ltd .: Oil absorbing carriers such as oil absorbing capacity 220 to 270 mL / 100 g) and “Silo Pure” (manufactured by Fuji Divison Co., Ltd .: oil absorbing capacity 240 to 280 mL / 100 g) can be used. As the oil absorbing carrier, those described in JP-A-6-179899, column 12, line 12 to column 13, line 1 and column 17, line 34 to column 19, line 17 are suitable.
[0032]
The water-insoluble substance may be composed of a single component or a plurality of components.
[0033]
When the water-insoluble substance is contained, the blending amount is 50% by weight or less, preferably 40% by weight or less, more preferably 30% by weight or less, particularly preferably 20% by weight, most preferably 10% by weight or less. .
[0034]
Further, the treatment agent of the present invention can contain auxiliary components such as fluorescent dyes, pigments, dyes and enzymes. When the auxiliary component is contained, the blending amount is 10% by weight or less, preferably 5% by weight or less, more preferably 3% by weight or less, particularly preferably 1% by weight or less, and most preferably not contained. is there.
[0035]
The treatment agent of the present invention is not limited by the form, and may be in any form such as tablet, powder, granule, liquid, paste, gel. Also, the production method is not particularly limited, and blending is possible as long as it is only a powder raw material. When a liquid raw material is contained, an operation such as drying may be used in addition to blending. Below, the manufacturing method in the case of making it granular is shown as an example.
[0036]
A granular processing agent can be produced by the step (a) of preparing a slurry containing an alkali buffer and a polyvalent metal salt, and the step (b) of spray drying the slurry. The slurry may contain the above-mentioned water-insoluble substance, surfactant, polymer compound, and water-soluble salts (excluding alkali buffer and polyvalent metal salt) as necessary. Further, it is preferable to add a surface modification step (surface modification step) after the step (b).
[0037]
<Process (a)>
The slurry used in step (a) may be a non-curable slurry that can be pumped. In order for the spray-dried dough obtained in step (b) to have sufficient particle strength as a product, the dissolution rate of water-soluble salts such as alkali buffer and polyvalent metal salt in the slurry is an important factor. . The water content in the slurry required for this is generally preferably 30 to 70% by weight, more preferably 35 to 60% by weight, and most preferably 40 to 55% by weight. If the slurry moisture is low, pumping becomes difficult, and the nozzle during spray drying is likely to be clogged, which is not preferable. Moreover, when there is too much slurry water | moisture content, since the amount of the water evaporated in a process (b) increases, productivity will fall. The slurry temperature is preferably 30 to 80 ° C., more preferably 35 to 65 ° C. in terms of the solubility of the water-soluble component and the pumping property.
[0038]
As a slurry formation method, the addition method and order of components can be appropriately changed depending on the situation. For example, all or almost all of the water is first added to the mixing vessel, preferably after the water temperature has nearly reached the set temperature, the other ingredients are added sequentially or simultaneously. As a normal addition order, liquid components such as a surfactant and polyacrylate are first added, and then a water-soluble powder raw material is added. A small amount of auxiliary components such as dyes are also added. Finally, the water-insoluble component is added. At that time, for the purpose of improving the mixing efficiency, the water-insoluble component may be added in two or more portions. Moreover, you may add a powder raw material in an aqueous medium after mixing previously. Further, water may be added to adjust viscosity and slurry moisture after all components are added. The effect of the alkaline buffer and the polyvalent metal salt is exhibited regardless of whether they are added first, last, or divided. In order to finally obtain a homogeneous slurry, after all components are added to the slurry, it is preferably mixed for 10 minutes or more, more preferably 30 minutes or more.
[0039]
<Step (b)>
As a method for drying the slurry, spray drying in which the particle shape is substantially spherical is particularly preferable. As the spray-drying tower, a countercurrent tower is more preferable because thermal efficiency and particle strength of the spray-dried particles are improved. The slurry atomizer may be any of a pressure spray nozzle, a two-fluid spray nozzle, and a rotating disk type, but a pressure spray nozzle is particularly preferable in order to obtain a desired average particle size.
The temperature of the gas supplied to the drying tower is preferably 150 to 300 ° C, more preferably 170 to 250 ° C in terms of productivity and ease of production. The temperature of the gas discharged from the drying tower is preferably 70 to 125 ° C., more preferably 80 to 115 ° C. in terms of the thermal efficiency of the drying tower.
[0040]
<Surface modification process>
In the present invention, in order to modify the particle surface of the spray-dried particles obtained by the step (b), various forms such as the following (1) fine powder and (2) liquid material are added as forms upon addition. The surface modification step of adding the coating agent may be performed in one step or two steps.
[0041]
Since the fluidity and non-caking property of the treatment agent particle group tends to be improved when the particle surface of the treatment agent particle group of the present invention is coated, the surface modification step is preferable. The apparatus used in the surface modification step is not particularly limited, and a known mixer can be used. Henschel mixer (made by Mitsui Miike Chemical Co., Ltd.), high speed mixer (made by Fukae Kogyo Co., Ltd.), vertical granulator (made by Paulek Co., Ltd.), Redige mixer (Matsuzaka Giken Co., Ltd.) Co., Ltd.), Proshare mixer (manufactured by Taiheiyo Kiko Co., Ltd.), Nauta mixer (manufactured by Hosokawa Micron Co., Ltd.), etc.
[0042]
As a preferable mixer, from the viewpoint of producing a processing agent particle group containing a large amount of mononuclear processing agent particles, it is an apparatus in which a strong shearing force is not easily applied to the spray drying particles (the spray drying particles are not easily disintegrated). From the viewpoint of dispersion efficiency, an apparatus with good mixing efficiency is preferred. Among the mixers described above, it is particularly preferable that a horizontal mixing tank has a stirring shaft at the center of a cylinder, and a mixer (horizontal mixer) of a type in which a stirring blade is attached to this shaft to mix powder is ready. There are mixers and professional share mixers.
[0043]
Further, the additive may be supported on the spray-dried particles by using the continuous apparatus of the above mixer. Moreover, as a continuous type apparatus of a mixer other than the above, there are, for example, a flexo-mix type (manufactured by POWREC Co., Ltd.), a turbulator (manufactured by Hosokawa Micron Co., Ltd.), and the like.
[0044]
It is more preferable that the temperature in the mixer is increased to a temperature equal to or higher than the melting point of the additive for mixing. Here, the temperature for raising the temperature may be higher than the melting point of the additive in order to promote the loading of the additive. However, in a practical range, the temperature is preferably higher than the melting point and 50 ° C. higher than the melting point. A temperature higher by 10 ° C to 30 ° C is more preferable.
[0045]
The batch mixing time for obtaining a suitable treatment agent particle group and the average residence time in the continuous mixing are preferably 1 to 20 minutes, and more preferably 2 to 10 minutes.
[0046]
The surface coating agent preferably has an average primary particle size of 10 μm or less, and more preferably 0.1 to 10 μm. When the average particle size is within this range, the coverage of the particle surface of the treatment agent particle group is improved, which is preferable from the viewpoint of improving the fluidity and caking resistance of the treatment agent particle group. The average particle diameter of the surface coating agent is measured by a method using light scattering, for example, a particle analyzer (manufactured by Horiba, Ltd.), or measurement by microscopic observation.
[0047]
The surface coating agent is preferably an aluminosilicate, but an amorphous one having a low calcium capturing ability is particularly preferable. Other than aluminosilicates, fine powders such as silicate compounds such as sodium sulfate, calcium silicate, silicon dioxide, bentonite, talc, clay, amorphous silica derivatives and crystalline silicate compounds are also preferred. In addition, a metal soap having primary particles of 0.1 to 10 μm, a powdered surfactant (for example, alkyl sulfate) and a water-soluble organic salt can be used in the same manner. When a crystalline silicate compound is used, it is preferably used by mixing with fine powder other than the crystalline silicate compound for the purpose of preventing deterioration due to moisture absorption or carbon dioxide agglomeration of the crystalline silicate.
[0048]
As a usage-amount of a surface coating agent, 0.5-40 weight part is preferable with respect to 100 weight part of processing agent particle groups, 1-30 weight part is more preferable, and 2-20 weight part is especially preferable. When the amount of the surface coating agent used is within this range, the fluidity is improved, giving a good feeling to the consumer.
[0049]
In addition, the processing agent of this invention can also be used suitably as a washing auxiliary agent in the case of washing with water. It is more preferable to use it alone than to use it together with an ordinary detergent in order to obtain the effects of the present invention.
[0050]
<Deodorization treatment method>
In the present invention, an excellent deodorizing effect is obtained by treating clothing after wearing with a treatment medium containing water having a polyvalent metal ion concentration of 2 to 8 mmol / liter and a pH of 8 to 13. Can do. In this method, the treatment agent of the present invention is preferably used. The polyvalent metal ion concentration of the treatment medium is preferably 2.5 to 7.5 mmol / liter, more preferably 3 to 7 mmol / liter, further 3.5 to 6.5 mmol / liter, and further preferably 4 to 6 mmol / liter. . Further, the pH of the treatment medium is preferably 8.5 to 12.5, more preferably 9 to 12, further 9.5 to 11.5, and further preferably 10 to 11. These polyvalent metal ion concentrations and pH are those at the temperature of the treatment medium during treatment. The treatment method is performed by bringing the treatment medium of the present invention into contact with the clothing after wearing by a method such as dipping, spraying, coating, etc., but it may conform to the method of washing with a washing machine using a normal clothing detergent. it can. In addition, when washing with high hardness water in Europe and the like, the liquidity is acidic to neutral when no detergent is used, and the hardness decreases when using a detergent. This is different from the deodorizing treatment performed at hardness and high pH. The present invention is suitable for clothing after wearing among textile products.
[0051]
【Example】
[Deodorization of underwear]
After putting 10 pieces of Gunze underwear after 25-year-old men wear for 24 hours into a washing machine “NA-F70AP2” manufactured by Matsushita Electric Industrial Co., Ltd. Water of 4 ° DH at 4 ° C. was poured. The treatment was performed with the setting of “standard course / water volume 40 L, washing 7 minutes, rinsing 2 times, dehydration 4 minutes”. In addition, each processing agent of an Example and a comparative example prepares the concentrate which melt | dissolved each required raw material in ion-exchange water, respectively, and the density | concentration in a washing machine is 0.0667 weight% (26.7g / 40L). It was made to become. After the treatment, the underwear was left to dry for 24 hours in shade. The fatty acid odors of 10 underwears were judged one by one according to the following evaluation criteria. Three people made the determination, calculated the average value of the points for a total of 30 sheets, and used it as the deodorant score for the underwear. The evaluation results of Examples 1 to 5 and Comparative Examples 1 to 4 are shown in Table 1.
[0052]
〔Evaluation criteria〕
1: No fatty acid odor.
2: Slight fatty acid odor can be detected.
3: There is a fatty acid odor.
4: Strong fatty acid smell.
5: Very strong fatty acid odor.
[0053]
In the following examples and comparative examples, the following raw materials were used as they were unless otherwise specified.
・ Sodium carbonate: anhydrous, special grade reagent, manufactured by Sigma
・ Potassium carbonate: anhydrous, special grade, made by Sigma
・ Calcium chloride: anhydrous, grade 1, manufactured by Sigma
・ Magnesium chloride: Hexahydrate, grade 1, made by Sigma
・ Sodium sulfate: anhydrous, special grade, made by Sigma
・ Zeolite: Toyo Builder (4A type, average particle size: 3.5 μm), manufactured by Tosoh Corporation)
40% by weight sodium polyacrylate aqueous solution: weight average molecular weight 10,000 (manufactured by Kao Corporation), pure content 40% by weight
-Sodium alkylbenzene sulfonate: Neoperex G-65, manufactured by Kao Corporation, pure content 65% by weight
Polyoxyethylene alkyl ether: Emulgen 108KM (average number of moles of ethylene oxide added: 8.5, carbon number of alkyl chain: 12-14, manufactured by Kao Corporation).
[0054]
Example 1
8.00 g of sodium carbonate, 2.67 g of calcium chloride, and 16.00 g of sodium sulfate were dissolved in 973.33 g of water at 10 ° C. and 4 ° DH. This aqueous solution was put into a washing machine, and water at 10 ° C. and 4 ° DH was poured into a 39 L washing machine to treat 10 pieces of underwear.
[0055]
Example 2
13.33 g of potassium carbonate, 8.54 g of magnesium chloride (hexahydrate), and 9.33 g of sodium sulfate were dissolved in 968.80 g of water at 10 ° C. and 4 ° DH. This aqueous solution was put into a washing machine, and water at 10 ° C. and 4 ° DH was poured into a 39 L washing machine to treat 10 pieces of underwear.
[0056]
Example 3
Sodium carbonate 5.33 g, calcium chloride 2.67 g, magnesium chloride (hexahydrate) 5.69 g, and sodium sulfate 16.0 g were dissolved in 100.3 ° C., 4 ° DH water 970.31 g. This aqueous solution was put into a washing machine, and water at 10 ° C. and 4 ° DH was poured into a 39 L washing machine to treat 10 pieces of underwear.
[0057]
Example 4
18.67 g of sodium carbonate and 8.00 g of calcium chloride were dissolved in 973.33 g of water at 10 ° C. and 4 ° DH. This aqueous solution was put into a washing machine, and water at 10 ° C. and 4 ° DH was poured into a 39 L washing machine to treat 10 pieces of underwear.
[0058]
Example 5
5.33 g of sodium carbonate, 2.67 g of calcium chloride, and 18.67 g of sodium sulfate were dissolved in 973.33 g of water at 10 ° C. and 4 ° DH. This aqueous solution was put into a washing machine, and water at 10 ° C. and 4 ° DH was poured into a 39 L washing machine to treat 10 pieces of underwear.
[0059]
Comparative Example 1
8.00 g of sodium carbonate, 8.00 g of sodium sulfate and 10.67 g of zeolite were charged into 973.33 g of water at 10 ° C. and 4 ° DH. This aqueous solution was put into a washing machine, and water at 10 ° C. and 4 ° DH was poured into a 39 L washing machine to treat 10 pieces of underwear.
[0060]
Comparative Example 2
10.67 g of sodium sulfate and 16.00 g of zeolite were charged into 973.33 g of water at 10 ° C. and 4 ° DH. This aqueous solution was put into a washing machine, and water at 10 ° C. and 4 ° DH was poured into a 39 L washing machine to treat 10 pieces of underwear.
[0061]
Comparative Example 3
10.33 g of sodium sulfate, 6.67 g of zeolite, 3.33 g of 40 wt% aqueous sodium polyacrylate, 8.21 g of linear alkylbenzene sulfonate (65 wt% pure), and 4.00 g of polyoxyethylene alkyl ether It was added to 968.46 g of water at 4 ° C. at 4 ° C. This aqueous solution was put into a washing machine, and water at 10 ° C. and 4 ° DH was poured into a 39 L washing machine to treat 10 pieces of underwear.
[0062]
Comparative Example 4
17.33 g of sodium sulfate, 8.21 g of linear alkylbenzene sulfonate (pure content 65% by weight) and 4.00 g of polyoxyethylene alkyl ether were charged into 970.46 g of water at 10 ° C. and 4 ° DH. This aqueous solution was put into a washing machine, and water at 10 ° C. and 4 ° DH was poured into a 39 L washing machine to treat 10 pieces of underwear.
[0063]
[Table 1]

[0064]
Examples 1 to 5 are a combination of an alkali buffer, a polyvalent metal salt, and sodium sulfate as a filler, and do not contain zeolite, sodium polyacrylate, or the like that has a high ability to capture hardness components. In Examples 1 to 5, it was confirmed that the fatty acid soil was scummed and the boiling point of the fatty acid soil was increased, so that the deodorizing property of the underwear was increased.
[0065]
On the other hand, in Comparative Example 1, the zeolite captures the hardness component in water, and the treatment liquid becomes high pH with sodium carbonate, which is an alkaline buffer. However, the deodorizing ability was lower than in the examples due to the increase in free fatty acids. In Comparative Example 2, since the self-emulsification of fatty acid with an alkaline buffer cannot be expected, the deodorizing property of the underwear is very poor. In Comparative Examples 3 and 4, since the surfactant is contained, the washing rate seems to be high, but the free fatty acid cannot be removed, so the deodorizing property of the underwear is lowered.
[0066]
From the above results, it was shown that the treatment agent of the present invention has extremely excellent fatty acid odor deodorizing performance in deodorizing treatment such as underwear where dirt is not visible.

Claims (3)

  10 to 95% by weight of an alkali buffer selected from alkali metal carbonates and alkali metal silicates, and 1 to 90% by weight of a water-soluble alkaline earth metal salt. A treating agent for deodorizing textile products, wherein the total amount is 30 to 100% by weight and the content of the surfactant is 5% by weight or less.   The deodorizing treatment agent according to claim 1, which is used in washing with water.   3. The method according to claim 1, wherein the polyvalent metal ion concentration is 2 to 8 mmol / liter, the pH is 8 to 13, and the surfactant concentration is 5 wt% or less. Deodorant treatment agent.