JP2014193254A - Washing method for fiber product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for efficiently removing age-related smells attached to fiber products including, for example, clothing such as underwear, a sport shirt, a cutter shirt, a jacket, an overcoat, a pajama and a Japanese bathrobe; a fiber-made wearing article such as a hat; and bedding such as a sheet, a Futon, and a pillow cover.SOLUTION: The washing method for fiber products includes dip washing a fiber product in a dipping liquid including histidine or derivative thereof.

Description

  The present invention relates to a method for washing textile products. More specifically, the present invention relates to a method for washing a textile product to which an aging odor is attached, which can effectively remove the aging odor from the textile product to which the aging odor is attached.

  Nonenal, represented by trans-2-nonenal, has been reported as a causative substance of aging odor. Nonenal is a lipid aldehyde that is produced by excessive oxidation of unsaturated fatty acids such as palmitoleic acid with a decrease in the antioxidant activity of the living body due to aging. In an aging society, it is desired to develop a washing method that can effectively remove nonenal adhering to textiles such as clothing and bedding.

  By the way, as a composition for suppressing body odor generation capable of suppressing an aging odor, a composition for removing body odor containing amino acids such as water and histidine has been proposed (for example, see Patent Document 1).

  However, the body odor-removing composition is used as a skin cosmetic, a deodorant, etc., and fibers with an aging odor such as clothing with an aging odor, bedding with an aging odor, etc. No method has been proposed for effectively removing aging odors from products.

JP 2010-13418 A

  This invention is made in view of the said prior art, and it aims at providing the method which can remove effectively the aging odor adhering to textiles, such as clothing and bedding, from the said textiles. To do.

The present invention
(1) A method for washing a textile product to which an aging odor is attached, wherein the textile product is soaked in a soaking solution containing histidine or a derivative thereof. And (2) histidine or a derivative thereof is of formula (I):

(Wherein R ¹ represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and R ² represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms)
It is related with the washing method of the textiles as described in said (1) which is histidine represented by these, or its derivative (s).

  According to the method for washing a textile product of the present invention, there is an excellent effect that an aging odor adhering to a textile product such as clothing and bedding can be effectively removed from the textile product.

It is a figure which shows the result of having investigated the molecular structure of the reaction product obtained in Experimental example 1 with the Fourier-transform mass spectrometer (FT-MS). It is a figure which shows the result of having investigated the molecular structure of the reaction product obtained in Experimental example 1 with the nuclear magnetic resonance apparatus (NMR).

  As described above, the textile product washing method of the present invention is characterized in that the textile product is soaked and washed in a soaking solution containing histidine or a derivative thereof.

  Examples of the textile products that can be used in the textile product washing method of the present invention include underwear, sports shirts, shirts, jackets, suits (backs), slacks (trousers), overcoats, jumpers, pajamas (sleepwear), Examples include clothing such as yukata, fiber clothing such as hats, fiber wear such as towels, handkerchiefs, neckerchiefs, and bandanas, and fiber bedding such as sheets, duvets, pillowcases, blankets, and towels. The present invention is not limited to such examples.

  Moreover, there is no limitation in particular also about the kind of fiber which comprises a fiber product. Examples of fibers constituting the textile product include synthetic fibers such as polyamide fibers such as nylon, polyester fibers, acrylic fibers, and polyolefin fibers such as polypropylene; semi-synthetic fibers such as acetate fibers and triacetate fibers; rayon, cupra, polynosic, etc. Natural fibers such as cotton, hemp, wool, silk, etc., but the present invention is not limited to such examples.

  Examples of histidine or a derivative thereof that can be preferably used in the present invention include, for example, formula (I):

(Wherein R ¹ represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and R ² represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms)
Histidine represented by the following or a derivative thereof.

  Examples of the alkyl group having 1 to 6 carbon atoms include a methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, tert-butyl group, n-hexyl group, isohexyl group, Examples thereof include a cyclohexyl group, but the present invention is not limited to such examples.

Among R ¹ , a hydrogen atom or an alkylcarbonyloxy group having 1 to 4 carbon atoms is more preferable from the viewpoint of effectively removing an aging odor. Further, Among R ^2, from the viewpoint of effectively removing odor, more preferably a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.

  Histidine or a derivative thereof may be used alone or in combination of two or more. In addition, histidine or a derivative thereof may be either D-form or L-form, respectively.

  Histidine or a derivative thereof can be usually used as a solution at the time of use. The solvent used for the solution of histidine or a derivative thereof is water, a hydrophilic organic solvent, or a mixed solvent of water and a hydrophilic organic solvent from the viewpoint of efficiently removing the aging odor from the fiber product to which the aging odor is attached. Is preferred.

  Examples of the hydrophilic organic solvent include monohydric alcohols such as methanol, ethanol, isopropanol, and n-propanol; polyhydric alcohols such as ethylene glycol, propylene glycol, butanediol, pentanediol, hexanediol, heptanediol, and dipropylene glycol. Ketones such as acetone, methyl ethyl ketone, methyl propyl ketone; esters such as methyl formate, ethyl formate, methyl acetate, methyl acetoacetate; diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol dimethyl ether, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether And ethers such as dipropylene glycol monomethyl ether The present invention is not limited only to those exemplified. These hydrophilic organic solvents may be used alone or in combination of two or more.

  In a mixed solvent of water and a hydrophilic organic solvent, the content of the hydrophilic organic solvent in the mixed solvent is determined according to the type of fiber product to which an aging odor is attached, the type and amount of use of histidine or a derivative thereof, and if necessary. Since it varies depending on the type and amount of the surfactant or additive, it cannot be determined unconditionally, and therefore it is preferable to adjust appropriately according to these.

  The concentration of histidine or its derivatives in the soaking solution when soaking is different depending on the type of fiber product used and cannot be determined unconditionally, but the viewpoint of efficiently removing nonenal from the fiber product From the viewpoint of suppressing the increase in viscosity of the soaking solution, preferably 100 g / L or more, more preferably 0.1 g / L or more, more preferably 0.3 g / L or more, and further preferably 0.5 g / L or more. L or less, more preferably 90 g / L or less, still more preferably 80 g / L or less. A soaking solution having a high concentration may be prepared and diluted with water or the like so as to have a predetermined concentration when soaking.

  In the soaking solution, a surfactant can be blended in an appropriate amount if necessary. When the surfactant is blended in the soaking solution, an effect of removing dirt such as oil stains can be imparted to the soaking solution.

  Examples of the surfactant include an anionic surfactant, a nonionic surfactant, a cationic surfactant, and an amphoteric surfactant. These surfactants may be used alone, Two or more kinds may be used in combination.

  Examples of the anionic surfactant include alkyl sulfate salts such as ammonium dodecyl sulfate and sodium dodecyl sulfate; alkyl sulfonate salts such as ammonium dodecyl sulfonate and sodium dodecyl sulfonate; alkyl aryl sulfonates such as ammonium dodecyl benzene sulfonate and sodium dodecyl naphthalene sulfonate. Examples include salts; polyoxyethylene alkyl sulfate salts; polyoxyethylene alkyl aryl sulfate salts; dialkyl sulfosuccinates; aryl sulfonic acid-formalin condensates; fatty acid salts such as ammonium laurate and sodium stearate. However, the present invention is not limited to such examples.

  Nonionic surfactants include, for example, polyoxyethylene alkyl ether, polyoxyethylene alkyl aryl ether, condensates of polyethylene glycol and polypropylene glycol, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, fatty acid monoglyceride, ethylene oxide, and the like. Although the condensate with an aliphatic amine etc. are mentioned, this invention is not limited only to this illustration.

  Examples of the cationic surfactant include alkylammonium salts such as dodecyl ammonium chloride, but the present invention is not limited to such examples.

  Examples of amphoteric surfactants include alkyldimethylamino fatty acid betaines, alkyldimethylamine oxides, and alkylcarboxymethylhydroxyethylimidazolium betaines, but the present invention is not limited to such examples.

  In addition, in the soaking solution, as long as the purpose of the present invention is not hindered, for example, a pH adjuster, a moisturizer, a viscosity adjuster, an antiseptic, an antibacterial agent, a colorant, an ultraviolet absorber, chelation Additives such as agents and stabilizers may be included in appropriate amounts.

  In the textile product washing method of the present invention, the aging odor of the textile product can be removed simply by soaking the textile product in a soaking solution.

  The temperature of the soaking solution when the textile product is soaked and washed in the soaking solution is not particularly limited, but is usually preferably a temperature of 0 to 95 ° C, more preferably about room temperature. preferable.

  The time for soaking and washing textile products in the soaking solution depends on the concentration of histidine or its derivative contained in the soaking solution, the type of textile product, the temperature of the soaking solution, the strength of aging odor, etc. Since it is different, it cannot be determined in general, but it is usually about 3 to 24 hours.

  When the textile product is soaked and washed in the soaking solution, the soaking solution may be stirred if necessary.

  After the textile product is soaked and washed in the soaking solution as described above, it may be dried after removing the soaking solution adhering by washing or the like, if necessary.

  According to the method for washing a textile product of the present invention, the aging odor attached to the textile product such as clothing and bedding can be effectively removed from the textile product. It can be suitably used for textile products.

  EXAMPLES Next, although this invention is demonstrated further in detail based on an Example, this invention is not limited only to this Example.

Experimental example 1
After adding 0.028 mL of nonenal reported as a causative substance of an aging odor to 3 mL of methanol, 46 mg of tert-butoxycarbonyl-L-histidine methyl ester was added as a histidine derivative. A white oily product was obtained by reacting at 37 ° C. for 6 days. The main reaction product was isolated and purified by subjecting this product to silica gel chromatography (developing solvent was a 20: 1 mixture of ethyl acetate and methanol).

Next, the molecular structure of the reaction product obtained above was examined with a Fourier transform mass spectrometer (FT-MS) and a nuclear magnetic resonance apparatus (NMR). The result of examining the molecular structure of the reaction product with a Fourier transform mass spectrometer (FT-MS) is shown in FIG. In addition, FIG. 2 shows the result [ ¹ H-NMR (DMSO-d ₆ , 400 MHz)] obtained by examining the molecular structure of the reaction product with a nuclear magnetic resonance apparatus (NMR).

  From the results shown in FIG. 1 and FIG. 2, it can be seen that the aldehyde group of Nonenal is chemically bonded specifically to the imidazole group of tert-butoxycarbonyl L-histyridine methyl ester. From this fact, tert-butoxycarbonyl L-histidine lysine methyl ester is useful as a component for removing aging odor because it forms a new compound by chemically binding with nonenal. I understand.

Example 1
A laundry pickling agent containing L-histidine (L-histidine 12.5g / L) was produced. After 100 μl of nonenal dissolved in isooctane was adhered to a cotton cloth (10 × 10 cm), it was left for 30 minutes. The cloth in which this nonal was attached to 100 ml of the soaking agent was placed in 100 ml of the soaking agent, soaked at room temperature for 5 hours, and then rinsed with tap water. Thereafter, the cloth sufficiently squeezed out of water was immersed in 10.8 ml of isooctane and allowed to stand for 24 hours, and nonenal in the cloth was extracted with isooctane. Nonenal in the extract was analyzed by gas chromatography.

Production Example 1 (Production of test cloth)
Onenal 50 mL was dissolved in isooctane 50 mL to prepare 100 mL of Nonenal solution having a concentration of Nonenal of 50%. A test cloth was prepared by adhering 100 μL of the above-obtained Nonenal solution to a cotton cloth (size: 10 cm × 10 cm) and leaving it for 30 minutes.

Reference example 1
The test cloth obtained in Production Example 1 was immersed in 10.8 mL of isooctane at 20 ° C. and left for 24 hours to extract nonenal in the test cloth with isooctane to obtain an extract. When the concentration of nonenal contained in the extract obtained above (the concentration of blank nonenal) was examined by gas chromatography, the concentration of nonenal in the blank was 0.47 w / v%.

Example 1
A soaking solution having a concentration of L-histidine of 12.5 g / L was prepared by dissolving L-histidine in water.

  The test cloth obtained in Production Example 1 was immersed in the soaking solution at 20 ° C. obtained above for 5 hours, and then rinsed with tap water.

  Next, the water adhering to the test cloth is sufficiently removed by squeezing the test cloth, and then the test cloth is immersed in 10.8 mL of isooctane at 20 ° C. and left for 24 hours to be in the test cloth. Extract of this was extracted with isooctane. As a result, when the concentration of nonenal contained in the extract obtained above was examined by gas chromatography, the concentration of nonenal was 0.0175 w / v%.

Also, the removal rate of nonenal is formula:
[Nonenal removal rate (%)]
= 100
-{[[Nonenal concentration (w / v%) contained in the extract after pickling]]
÷ [Blank Nonenal concentration (0.47 w / v%)]]
× 100}
As a result, it was confirmed that Nonenal was effectively removed.

Example 2
The concentration of L-histidine was adjusted to 12.5 g / L by dissolving L-histidine in water, and a nonionic surfactant (polyoxyethylene lauryl ether) was added to the resulting solution at a concentration of 0. A soaking solution was prepared by adding to 0.01 wt / v%.

  An extract was prepared in the same manner as in Example 1 except that the soaking solution obtained above was used instead of the soaking solution used in Example 1. As a result, when the concentration of nonenal contained in the extract obtained above was examined by gas chromatography, the concentration of nonenal was 0.0175 w / v% as in Example 1, and the concentration of nonenal was Since the removal rate was 96.3%, it was confirmed that nonenal was effectively removed.

  From the results of Example 1 and Example 2, it can be seen that L-histidine contained in the soaking solution is not adversely affected by the surfactant.

Comparative Example 1
The test cloth obtained in Production Example 1 was immersed in water at 20 ° C. for 5 hours, and then rinsed with tap water.

  Next, the water adhering to the test cloth is sufficiently removed by squeezing the test cloth, and then the test cloth is immersed in 10.8 mL of isooctane at 20 ° C. and left for 24 hours to be in the test cloth. Extract of this was extracted with isooctane. As a result, when the concentration of nonenal contained in the extract obtained above was examined by gas chromatography, the concentration of nonenal was 0.26 w / v%.

  Moreover, when the removal rate of nonenal was calculated | required similarly to Example 1, since it is 44.6%, it was confirmed that nonenal is not fully removed by the pickling washing with water.

Production Example 2 and Production Example 3 (Production of test cotton shirt or test wool back)
Onenal 50 mL was dissolved in isooctane 50 mL to prepare 100 mL of Nonenal solution having a concentration of Nonenal of 50%. After 5 mL of the Nonenal solution obtained above was attached to a cotton shirt or a wool back, respectively, and left for 30 minutes, a test cotton shirt (Production Example 2) and a test wool back (Production) Example 3) was prepared.

Reference Example 2 and Reference Example 3
The test cotton shirt obtained in Production Example 2 and the test wool suit obtained in Production Example 3 were each immersed in 60 L of water for 18 hours, and then rinsed with tap water. Thereafter, each was separately immersed in 3 L of isooctane at 20 ° C. After leaving for 24 hours, the extract from the test cloth was extracted with isooctane. When the concentration of nonenal contained in the extract obtained as described above (the concentration of blank nonenal) was examined by gas chromatography, the concentration of nonenal in the blank was determined in the test cotton shirt (Reference Example 2). It was 0.0063 w / v%, and it was 0.0017 w / v% in the test wool back (Reference Example 3).

Example 3 and Example 4
A soaking solution having a concentration of L-histidine of 1 g / L was prepared by dissolving L-histidine in water.

  The test cotton shirt obtained in Production Example 2 (Example 3) and the test wool suit obtained in Production Example 3 (Example 4) were respectively added to 60 L of the soaking solution at 20 ° C. obtained above. After soaking for 18 hours, it was washed with tap water.

  Next, after squeezing the test cotton shirt and the test wool back sufficiently to remove the adhering moisture, the test cotton shirt and the test wool back into 3 L of isooctane at 20 ° C. By immersing and allowing to stand for 24 hours, an extract was obtained by extracting a test cotton shirt and a test wool profile nonenal with isooctane. When the concentration of nonenal contained in the extract obtained above was examined by gas chromatography, the concentration of nonenal in the test cotton shirt was 0.015 w / v%, and noneal in the test wool suit The concentration of was 0.0005 w / v%.

Nonenal removal rate formula:
[Nonenal removal rate (%)]
= [[Nonenal concentration in the extract after soaking with water (w / v%)]-[Nonenal concentration in the extract after soaking with a soaking agent ( w / v%)]]
÷ [Nonenal concentration (w / v%) in the extract after soaking in water]
× 100}
As a result, it was confirmed that Noneal was effectively removed because it was 76% for shirts and 71% for suits.

Comparative Example 2 and Comparative Example 3
After immersing the test cotton shirt obtained in Production Example 2 (Comparative Example 2) and the test wool back obtained in Production Example 3 (Comparative Example 3) in water at 20 ° C. for 5 hours, tap water I washed it.

  Next, by thoroughly squeezing the test cotton shirt and the test wool back, respectively, the water adhering to the test cotton shirt and the test wool back is sufficiently removed, and then the test cotton shirt and A test wool fabric was immersed in 3 L of isooctane at 20 ° C. and allowed to stand for 24 hours to extract nonenal in the test cloth with isooctane, thereby obtaining an extract. As a result, when the concentration of nonenal contained in the extract obtained above was examined by gas chromatography, the concentration of nonenal in the cotton shirt for test was 0.0063 w / v%, The concentration of Nonenal in the suit was 0.0017 w / v%.

  Further, when the removal rate of nonenal was determined in the same manner as in Example 1, it was confirmed that nonenal was not sufficiently removed by soaking in water.

  From the above results, according to the method for washing a textile product of each example, there is an excellent effect that the aging odor attached to the textile product such as clothing and bedding can be effectively removed from the textile product. You can see that

Claims (2)

  A method for washing textile products, comprising washing textile products in a soaking solution containing histidine or a derivative thereof. Histidine or a derivative thereof is represented by the formula (I):

(Wherein R ¹ represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and R ² represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms)
The method for washing a textile product according to claim 1, wherein the histidine is a histidine or a derivative thereof.

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