JP2008138029A - Powder detergent composition for clothing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a powder detergent composition for clothing, which realizes high detergency, low foaming properties, resoiling-preventing properties and reduction in smell of the detergent composition. <P>SOLUTION: The powder detergent composition for clothing comprises (A) a specific nonionic surfactant represented by general formula (I), (B) a water-soluble chelating agent and (C) an alkali agent in specific ratios, respectively. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a powder detergent composition for clothing, and more particularly to a commercial powder detergent composition for laundry.

  In the cleaning industry, there are ordinary cleaning stores, linen supply, and other types of business. Of these, ordinary cleaning stores have in-house treatment facilities, and mainly indicate laundry stores that handle laundry from homes. The cleaning methods used here are dry cleaning using non-aqueous solvents and water-based cleaning (washing). For laundry).

  Among them, clothes handled by water-based cleaning are mostly cutter shirts, and there are two-shot types that do not contain bleaching agents and two-shot types that do not contain bleaching agents. It is done. In addition to the high cleaning performance and low foaming required for these detergents, the cleaning concentration is higher than in homes and the cleaning is performed at a lower bath ratio, so that it does not prevent the soil from being recontaminated. Is required. Furthermore, since the business-use powder detergent has a large detergent packaging of 10 to 20 kg, it is preferable that the odor peculiar to the surfactant used is reduced when used on site. Therefore, the performance required for commercial detergents includes high detergency, low foamability, recontamination prevention, and reduction in odor of the detergent composition.

Patent Document 1 discloses a detergent composition that promotes high detergency, recontamination prevention, and reduction in odor of the detergent composition.
Japanese Patent Application Laid-Open No. 2005-213489

  However, this document has a tendency to increase foaming due to the use of sodium alkylethoxysulfate, which is an anionic surfactant, as a main surfactant. Usually, non-ionic surfactants are used as main cleaning bases for commercial use. There was a problem that it was not suitable as a detergent.

  The subject of this invention is providing the powder detergent composition for clothing which implement | achieves high detergency, low-foaming property, recontamination prevention property, and reduction of the odor of a detergent composition.

The present invention comprises (A) a nonionic surfactant represented by the following general formula (I) [hereinafter referred to as component (A)] 6 to 20% by weight, (B) a water-soluble chelating agent [hereinafter referred to as (B) Component)] 1 to 50% by weight, and (C) an alkali agent (hereinafter referred to as component (C)) 10 to 50% by weight, (A) / (B) = 1/4 to 1/1, ( The present invention relates to a powder detergent composition for clothing having a weight ratio of A) / (C) = 1/4 to 1/1 and (B) / (C) = 1/2 to 2/1.
_{^{R 1 -O- (EO) p -}} (PO) q - (EO) r -H (I)
[Wherein, R ¹ represents an alkyl group or alkenyl group having an average carbon number of 8 to 18, EO represents an oxyethylene group, and PO represents an oxypropylene group. p, q, and r represent average addition mole numbers, respectively, p> 0, r> 0, q = 1-6, and p + r = 4-20. ]

  ADVANTAGE OF THE INVENTION According to this invention, the powder detergent composition for clothing which is excellent in washing | cleaning property, low-foaming property, and recontamination prevention property, and reduces the odor of a composition is obtained. The composition of the present invention is suitable as a powder detergent composition for clothing for water-based cleaning using a commercial washing machine.

<(A) component>
The component (A) of the present invention is a component mainly used for detergency and low foaming properties, and in the general formula (I), the average carbon number of R ¹ is preferably 10-14. Further, p is preferably 2 to 10, particularly 2 to 7, r is preferably 2 to 10, particularly 3 to 7, and q is preferably 1 to 5. From the viewpoint of low foaming properties, q is further 3 to 5, particularly 4 to 5. Is preferred. p + r is preferably 5 to 15, particularly 5 to 12, and p + q + r is preferably 5 to 20, more preferably 7 to 17, and particularly preferably 7 to 15. In this range, it becomes more suitable for the purpose of the powder detergent composition for business use, which is excellent in the detergency of sebum soil and has low foaming property.

  The content of the component (A) in the composition of the present invention is 6 to 20% by weight, preferably 8 to 18% by weight, and more preferably 10 to 15% by weight in terms of cleaning performance.

<(B) component>
(B) component of this invention is a water-soluble chelating agent, and is a component used for cleaning performance and hard water resistance. Here, the water solubility of the component (B) means that the solubility in 100 g of water is 0.1 g or more at 20 ° C. Component (B) is ethylenediaminetetraacetic acid, hydroxyethylethylenediaminetriacetic acid, diethylenetriaminepentaacetic acid, triethylenetetraminehexaacetic acid, phosphonic acid, tripolyphosphoric acid, nitrilotriacetic acid, ethylene glycose bis (2-aminoethyl ether) tetraacetic acid, citric acid , Maleic acid, polyacrylic acid, isoamylene-maleic acid copolymer, acrylic acid-maleic acid copolymer, acrylic acid-methacrylic acid copolymer, gluconic acid, hydroxybenzyliminoacetic acid, iminodiacetic acid and their salts One or more types are preferred. Furthermore, one or more types consisting of nitrilotriacetic acid, tripolyphosphoric acid and salts thereof are preferable, and one or more types consisting of tripolyphosphoric acid and salts thereof are particularly preferable.

  Moreover, content of (B) component in the composition of this invention is 1 to 50 weight% from a viewpoint of a detergency improvement, 10 to 45 weight% is preferable and 15 to 40 weight% is further more preferable.

<(C) component>
The component (C) of the present invention is a component mainly used for improving detergency, and as the component (C), alkali metal hydroxides, alkaline earth metal hydroxides, silicates and carbonates are used. One or more selected from salts are preferred. Examples of the alkali metal hydroxide and the alkaline earth metal hydroxide include sodium hydroxide, potassium hydroxide, and calcium hydroxide. Examples of the silicate include sodium silicate such as No. 1 sodium silicate, No. 2 sodium silicate, No. 3 sodium silicate, sodium orthosilicate, and sodium metasilicate, potassium silicate, sodium sesquicarbonate, potassium carbonate, and the like. A borate such as sodium borate can also be used. As the component (C), carbonates and silicates are preferable from the viewpoint of improving detergency, and sodium carbonate is particularly preferable.

  In addition, the content of the component (C) in the composition of the present invention is 10 to 50% by weight, preferably 10 to 45% by weight, from the viewpoint of improving detergency and preventing alkali burns due to poor rinsing. 35% by weight is more preferred.

  In the composition of the present invention, the weight ratio of the component (A) and the component (B) is (A) / (B) = 1/4 to 1/1, 1/3 to 3/4.

  In the composition of the present invention, from the viewpoint of detergency, the weight ratio of the component (A) to the component (C) is (A) / (C) = 1/4 to 1/1, preferably 1/3. ~ 1/2.

  In the composition of the present invention, from the viewpoint of preventing recontamination, the weight ratio of the component (B) to the component (C) is (B) / (C) = 1/2 to 2/1, preferably 5 / 9 to 3/2.

<Other ingredients>
Moreover, the powder detergent composition for clothes of this invention can contain surfactant other than (A) component. As the surfactant other than (A), one or more selected from nonionic surfactants, anionic surfactants, cationic surfactants and amphoteric surfactants other than the component (A) are preferable.

  (A) Nonionic surfactants other than the component include sorbitan fatty acid ester, polyoxyalkylene sorbitan fatty acid ester, polyoxyalkylene fatty acid ester, glycerin fatty acid ester, polyoxyalkylene polyglycerin fatty acid ester, polyglycerin fatty acid ester, polyoxy Alkylene polyglycerin fatty acid ester, sucrose fatty acid ester, resin acid ester, polyoxyalkylene resin acid ester, polyoxyalkylene alkyl ether other than component (A), polyoxyalkylene phenyl ether, alkyl (poly) glycoside, polyoxyalkylene Examples thereof include alkyl (poly) glycosides. Preferably, an ether group-containing nonionic surfactant and an ester group-containing nonionic surfactant other than the component (A) not containing a nitrogen atom are used.

  Examples of the anionic surfactant include carboxylic acid-based surfactants, sulfonic acid-based surfactants, sulfate ester-based surfactants, and carboxylic acid-based surfactants. Examples of the carboxylic acid surfactant include polyvalent carboxylates, polyoxyalkyl ether carboxylates, polyoxyalkylene alkylamide ether carboxylates, rosinates, dimer salts, and polymer acid salts. Examples of the sulfonic acid surfactant include alkylbenzene sulfonate, alkyl sulfonate, alkyl naphthalene sulfonate, naphthalene sulfonate, diphenyl ether sulfonate, alkyl naphthalene sulfonic acid condensate, naphthalene sulfonic acid. And the like. Examples of sulfate surfactants include alkyl sulfates, polyoxyalkylene alkyl sulfates, polyoxyalkylene alkyl phenyl ether sulfates, tristyrenated phenol sulfates, polyoxyalkylene distyrenated phenol sulfates. And alkyl polyglycoside sulfate. Examples of the phosphate ester surfactant include alkyl phosphate ester salts, alkylphenyl phosphate ester salts, polyoxyalkylene alkyl phosphate ester salts, polyoxyalkylene alkylphenyl phosphate ester salts, and the like. Examples of these salts include metal salts (Na, K, Ca, Mg, Zn, etc.), ammonium salts, alkanolamine salts, aliphatic amine salts, and the like.

  Examples of amphoteric surfactants include amino acids, betaines, imidazolines, and amine oxides. Examples of the amino acid system include acyl amino acid salts, acyl sarcosine salts, acyloylmethylaminopropionates, alkylaminopropionates, acylamidoethylhydroxyethylmethylcarboxylates, and the like. Examples of the betaine type include alkyl dimethyl betaine, alkyl hydroxyethyl betaine, acylamidopropyl hydroxypropyl ammonia sulfobetaine, acylamidopropyl hydroxypropyl ammonia sulfobetaine, amidopropyl dimethylcarboxymethyl ammobetaine ricillinate. Examples of the imidazoline series include alkyl carboxymethyl hydroxyethyl imidazolium betaine, alkyl ethoxy carboxymethyl imidazolium betaine, and the like. Examples of amine oxides include alkyldimethylamine oxide, alkyldiethanolamine oxide, alkylamidopropylamine oxide, and the like.

  The content of the surfactant other than the component (A) in the composition of the present invention is preferably 0.05 to 10% by weight, more preferably 0.5 to 7% by weight. In particular, the content of the anionic surfactant in the composition is preferably 0.05 to 10% by weight, particularly preferably 0.5 to 7% by weight.

  Moreover, the powder detergent composition for clothes of this invention can be mix | blended with the component known to mix | blend with detergent as an arbitrary component. As such optional components, (1) color transfer inhibitors such as polyvinylpyrrolidone, (2) enzymes such as amylase, protease, lipase, and cellulase, (3) enzyme stability such as calcium chloride, formic acid, and boric acid (boron compound) (4) fluorescent dye, (5) silicone for imparting flexibility, (6) silica as an antifoaming agent, silicone, (7) antioxidant, (8) adjusting agent such as sodium sulfate (9) Other than these, bluing agents, fragrances, antibacterial preservatives and the like can be mentioned.

The form of the detergent composition of the present invention is a powder, and the bulk density is preferably 0.5 to 1 g / cm ³ .

  The garment powder detergent composition of the present invention having the composition as described above can be produced by mixing the components (A) to (C) and, if necessary, optional components appropriately by a known method and then mixing them. .

  The powder detergent composition for clothing of the present invention is a washing solution dissolved and dispersed in water, preferably the total content of the components (A), (B), (C) [(A) + (B) + (C) ] Is used for washing clothes as a washing liquid of 0.05 to 1% by weight, preferably 0.08 to 1% by weight. In particular, when used as a laundry powder detergent for business use, 0.1 to 0.5% by weight is preferable, and it is used at a higher concentration than a household powder detergent usually used at a concentration of about 0.06% by weight. Moreover, it is preferable that pH of this washing | cleaning liquid is 10-12.5 at 20 degreeC, Furthermore, 10.5-12.

  From the viewpoint of solubility in water, the powder detergent composition for clothing of the present invention preferably has an average particle size of 200 to 1000 μm, and more preferably 300 to 900 μm.

  The powder detergent composition for clothing of the present invention can be used as a commercial detergent. In general, commercial detergent is introduced into a batch type washing machine manually (using a measuring cup or the like) or automatically (dissolving in the inflowing water or the like). For automatic charging, it is desirable that water solubility is good. The washing treatment using a commercial detergent includes a washing process, a rinsing process, and a drying process, and the powder detergent composition for clothing of the present invention can also be used as such a commercial detergent. In washing with commercial detergents, the washing process has a bath ratio (weight ratio of laundry to water) of 1/3 to 1/10, compared to a bath ratio of 1/15 to 1/20 normally used in household detergents. Since the bath ratio is low and the number of rinsings is limited to 2 to 3, it is preferable that the low foaming property, the anti-recontamination property and the rinsing property are good.

  The following evaluation was performed using the powder detergent composition shown in Table 1. The results are shown in Table 1.

(1) Cleanability (sebum dirt)
Apply 2g of model sebum soil (composition: 60% by weight cottonseed oil, 10% by weight oleic acid, 10% by weight palmitic acid, 10% by weight solid paraffin, 10% by weight liquid paraffin) uniformly on 10cm x 10cm cotton white cloth. A soiled cloth was prepared. A cleaning liquid containing 0.1% by weight of the composition shown in Table 1 (the balance is water having a hardness of 4 ° DH) of 4 sheets (8 g) of sebum-stained soil and a white cotton cloth (total of 50 g) cut into 6 cm × 6 cm. ) Was washed with a turgotometer (MS-8210) manufactured by Ueshima Seisakusho Co., Ltd. (rotation speed: 80 revolutions / minute, temperature: 50 ° C. × 10 minutes), and the reflectance of the cloth before and after washing was determined by Nippon Denshoku. Measurement was performed with a color difference meter (SE2000) manufactured by Kogyo Co., Ltd. (measurement wavelength: 550 nm), and the cleaning rate (%) was calculated according to the following formula.

The numerical value of the cleaning rate is evaluated according to the following criteria. In this evaluation, a difference of several points (several%) when the cleaning rate exceeds 50% is clearly recognized by visual observation. For example, it is obvious when the cleaning rate is 52 to 53% and 57 to 58%. Can be recognized as a significant difference.
○: Excellent cleaning performance (cleaning rate of 55% or more)
X: Inferior in washability (cleaning rate less than 55%)

(2) Low-foaming property 50 mL of cleaning liquid containing 0.3% by weight of the composition shown in Table 1 (the balance is 4 ° DH water) is placed in a test tube (length: 220 mm, inner diameter: 40 mm) and maintained at 50 ° C. . After confirming that the temperature reached 50 ° C., the mixture was shaken for 1 minute and the foaming height (mm) after 30 seconds was measured. The result is shown in Table 1, and the numerical value of the amount of foam is evaluated according to the following criteria.
○: The amount of foam is small (the foaming height is less than 20 mm).
Δ: The amount of foam is normal (bubble height 20 mm or more and less than 30 mm)
×: Large amount of foam (bubble height of 30 mm or more)

(3) Odor of composition (evaluation)
30 g of the composition was placed in a polyethylene bag (10 cm × 10 cm), sealed, placed in a thermostatic bath at 30 ° C. for 2 hours, then opened, and the odor was evaluated according to the following criteria.
○: Almost no odor △: Smell slightly ×: Smell

(4) Prevention of recontamination 1000 ml of a cleaning solution containing 0.1% by weight of the composition shown in Table 1 (the balance is water having a hardness of 4 ° DH) was prepared. After 0.25 g of carbon black was added to the cleaning liquid and dispersed, 4 pieces of white cotton cloth (2 g) cut into 6 cm × 6 cm as an evaluation cloth and white cotton cloth (48 g) cut into 6 cm × 6 cm as an adjustment cloth were added. . Washed with Ueshima Seisakusho Targotometer (MS-8210) (rotation speed 80 rpm / temperature 50 ° C. × 10 minutes), and the reflectance of cotton white cloth before and after washing was made by Nippon Denshoku Industries Co., Ltd. Measurement was performed with a color difference meter (SE2000) (measurement wavelength: 550 nm), and the recontamination prevention rate (%) was calculated by the following formula.

The anti-contamination property is shown in Table 1, and the anti-contamination property value is evaluated according to the following criteria.
○: Less contamination (recontamination prevention 70% or more and less than 80%)
Δ: Dirt adheres to some extent (anti-recontamination property of 50% or more and less than 70%)
X: Dirt is clearly attached (recontamination prevention property is less than 50%)

* Non-ionic surfactant (1): General formula (I) R ¹ is an average alkyl group having a carbon number of 12 in, p is 5, q is 4.5, nonionic surfactant r 5 [trade name Emulgen MS110, manufactured by Kao Corporation]
* Nonionic surfactant (2): polyoxyethylene lauryl ether (average number of moles of ethylene oxide added is 6) [trade name Emulgen 108, manufactured by Kao Corporation]
* Sodium tripolyphosphate: trade name sodium tripolyphosphate, manufactured by Shimonoseki Mitsui Chemical Co., Ltd. * NTA 3Na: nitrilotriacetic acid trisodium salt [trade name Dissolvin A-92 manufactured by Akzo Nobel Co., Ltd.]
* Sodium carbonate: Trade name Sodium carbonate (soda ash), manufactured by Central Glass Co., Ltd. * Sodium sulfate: Trade name: Neutral anhydrous sodium sulfate (AO), manufactured by Shikoku Kasei Kogyo Co., Ltd.

Claims (3)

(A) 6 to 20% by weight of a nonionic surfactant represented by the following general formula (I), (B) 1 to 50% by weight of a water-soluble chelating agent, and (C) 10 to 50% by weight of an alkali agent (A) / (B) = 1/4 to 1/1, (A) / (C) = 1/4 to 1/1, and (B) / (C) = 1/2 to 2/1. A powder detergent composition for clothing in a weight ratio.
_{^{R 1 -O- (EO) p -}} (PO) q - (EO) r -H (I)
[Wherein, R ¹ represents an alkyl group or alkenyl group having an average carbon number of 8 to 18, EO represents an oxyethylene group, and PO represents an oxypropylene group. p, q, and r represent average addition mole numbers, respectively, p> 0, r> 0, q = 1-6, and p + r = 4-20. ] (B) The powder detergent composition for clothing according to claim 1, wherein the water-soluble chelating agent is at least one selected from the group consisting of nitrilotriacetic acid, tripolyphosphoric acid and salts thereof. (C) The powder detergent composition for clothes according to claim 1 or 2, wherein the alkali agent is at least one selected from the group consisting of alkali metal hydroxides, alkaline earth metal hydroxides, silicates and carbonates. object.