JP2007291174A - Powder detergent composition for clothing - Google Patents

Abstract

[Problem] To provide a powder detergent composition for clothing which is excellent in detergency, low foaming property and anti-recontamination property, and hardly causes alkali blurring.
(A) 1 to 20% by weight of a polyoxyalkylene ether type nonionic surfactant represented by the following general formula (1), (B) 1 to 20% by weight of a fatty acid salt having 10 to 22 carbon atoms A powder detergent composition for clothing containing (C) 1 to 50% by weight of a water-insoluble chelating agent and (D) 10 to 50% by weight of an alkali agent. R1-O-EOp-POq-EOr-H (1) [wherein R1 represents an alkyl or alkenyl group having 8 to 18 carbon atoms, 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. ]
[Selection figure] None

Description

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

  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 contain bleaching agents and two-shot types that do not contain bleaching agents. It is done. In addition to high cleaning performance and low foaming, these detergents require a higher cleaning concentration than homes and a lower bath ratio. It is required that “bake” (alkali burn) caused by the remaining agent does not occur.

Patent Document 1 contains a water-soluble soap component having a kraft temperature of 25 to 35 ° C. and an alcoholic alcohol-based nonionic surfactant having an HLB of 12 to 15 at a specific weight ratio. A powdery detergent composition suitable as a laundry detergent for business use that does not cause “bake” in the final stage is described. As another method for preventing “bake”, Patent Document 2 discloses a post-treatment agent for commercial laundry cleaning containing a specific polyvalent carboxylic acid and an organic phosphonic acid in a specific weight ratio.
Japanese Patent Laid-Open No. 11-80798 Japanese Patent Laid-Open No. 10-219297

  However, in Patent Document 1, sufficient cleaning properties are not obtained for partial stains such as collars and sleeves, and Patent Document 2 requires a step of adding the post-treatment agent separately from the detergent. Therefore, it becomes complicated.

  An object of the present invention is to provide a powder detergent composition for clothing that is excellent in detergency, low foaming property, and anti-recontamination property, and further makes it difficult to cause alkali burn.

The present invention includes (A) a nonionic surfactant represented by the following general formula (I) [hereinafter referred to as component (A)] 1 to 20% by weight, (B) a fatty acid salt having 10 to 22 carbon atoms [hereinafter , (B) component] 1 to 20% by weight, (C) water-insoluble chelating agent (hereinafter referred to as component (C)) 1 to 50% by weight, and (D) an alkali agent (hereinafter referred to as component (D)) The present invention relates to a powder detergent composition for clothing containing 10 to 50% by weight.
R ¹ −O− (EO) _p − (PO) _q − (EO) _r −H (I)
[Wherein, R ¹ represents an alkyl group or alkenyl group having 8 to 18 carbon atoms, 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 clothes which is excellent in washing | cleaning property, low foaming property, and re-contamination prevention property, and also makes it difficult to raise | generate an alkali blur 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 property. In general formula (I), R ¹ has preferably 10 to 14 carbon atoms. 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 is more suitable for the purpose of the powder detergent composition for business use, which has excellent detergency on the dirt on the sleeves and has low foaming properties.

  In addition, the content of the component (A) in the composition of the present invention is 1 to 20% by weight, preferably 5 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 component mainly used for recontamination prevention property, and a C12-C18 fatty acid salt is preferable from a viewpoint of recontamination prevention property. The salt is preferably a metal salt (Na, K, Ca, Mg, Zn, etc.), an ammonium salt, an alkanolamine salt, or an aliphatic amine salt, more preferably a metal salt, and a sodium salt from the viewpoint of preventing recontamination. Further preferred. Further, the content of the component (B) in the composition of the present invention is 1 to 20% by weight, preferably 1 to 15% by weight, more preferably 1 to 10% by weight from the viewpoint of preventing recontamination. preferable.

<(C) component>
The component (C) of the present invention is a component mainly used for cleaning performance and hard water resistance. Component (C) is a water-insoluble chelating agent, where water-insoluble means that the solubility in 100 g of water is 0.1 mg or less at 25 ° C. (C) component is crystalline aluminosilicate (zeolite), amorphous aluminosilicate, silicon dioxide, hydrated silicate compound, talc, pyrofilament, smectite (saponite, hectorite, soconite, stevensite, montmorillonite, beidellite , Nontronite, etc.), vermiculite, mica (phlogopite, biotite, chinwald mica, muscovite, paragonite, celadonite, sea chlorite, etc.), kaolin minerals (kaolinite, dickite, nacrite, halosite, etc.) Etc. can be used. For reasons such as not promoting the generation of undissolved residues, it is preferable to contain crystalline aluminosilicate and amorphous aluminosilicate, and it is more preferable to contain crystalline aluminosilicate.

  Moreover, content of (C) component in the composition of this invention is 1-50 weight%, 5-45 weight% is preferable and 10-35 weight% is further more preferable.

In view of cleaning performance and hard water resistance, the component (C) preferably has a calcium ion scavenging ability of 200 to 600 CaCO ₃ mg / g, and preferably contains a water-insoluble salt of this range of calcium ion scavenging ability. . The calcium ion scavenging ability is determined by the method described in JP-A-3-277696, page 3, lower right column, line 6 to page 4, upper left column, line 6 (however, an anionic surfactant is read as a chelating agent).

<(D) component>
The component (D) of the present invention is a component mainly used for improving detergency, and the component (D) is selected from hydroxides, silicates and carbonates of alkali metals or alkaline earth metals. One or more are preferred. Examples of the alkali metal or 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 (D), carbonates and silicates are preferable from the viewpoint of improving detergency, and sodium carbonate is particularly preferable. In addition, the content of the component (D) in the composition of the present invention is 10 to 50% by weight, preferably 10 to 45% by weight, and preferably 10 to 35% by weight from the viewpoint of improving detergency and preventing alkali burn. Is more preferable.

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

  (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 surfactants other than the component (B) include carboxylic acid-based, sulfonic acid-based, sulfate ester-based surfactants and phosphate ester-based surfactants. Ester surfactants are preferred. 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 the salt 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.

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) Agent, (4) fluorescent dye, (5) silicone for imparting flexibility, (6) silica, silicone as antifoaming agent, (7) antioxidant, (9) other bluing agent, fragrance And antibacterial preservatives.

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 .

  Commercial detergents are used for cleaning at a higher concentration and lower bath ratio than those for household use, so they are better at preventing soil recontamination, and “bake” (alkaline production) that occurs when alkaline agents remain after rinsing. Is required not to occur. The powder detergent composition for clothing according to the present invention is excellent in cleaning properties, low foaming property, re-contamination prevention property, and is less likely to cause alkali blurring. Therefore, the powder detergent composition for clothing for water-based cleaning using a commercial washing machine It is suitable as.

  The powder detergent composition for clothes of the present invention is a washing liquid dispersed in water, preferably the total content of the components (A), (B), (C), (D) [(A) + (B) + (C ) + (D)] is used for washing clothes as a washing liquid of 0.05 to 1% by weight. The cleaning liquid has a pH at 20 ° C. of 10 or more, preferably 10.3 to 12, and the amount of component (D) is preferably adjusted to be within this range. In addition, it is preferable that pH is the said range in the temperature at the time of washing | cleaning.

  In the powder detergent composition for clothing of the present invention, the weight ratio of the component (A) to the component (B) is (A) / (B) = 10/1 to 1/1 from the viewpoint of preventing recontamination. Further, 5/1 to 3/2 is preferable.

  Moreover, the powder detergent composition for clothes of this invention is (A) / (C) = 1 / 30-1 / weight ratio of (A) component and (C) component from a viewpoint of washing | cleaning property and powder physical property. 1, more preferably 1/3 to 4/5.

  Moreover, the powder detergent composition for clothes of this invention is (A) / (D) = 1 / 10-2 / weight ratio of (A) component and (D) component from a viewpoint of washing | cleaning property and powder physical property. 3, more preferably 1/5 to 1/2.

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

(1) Cleanability (stained collar sleeve)
Apply 2g of model sebum soil (composition: 60% by weight of cottonseed oil, 10% by weight of oleic acid, 10% by weight of palmitic acid, 10% by weight of solid paraffin, 10% by weight of liquid paraffin) uniformly on 10cm x 10cm cotton cloth. A soiled cloth was prepared. This sebum soil-contaminated cloth was washed with a cleaning solution containing 0.1% by weight of the composition shown in Table 1 (the balance was water having a hardness of 4 ° DH), and a turgotometer (MS-8210) manufactured by Ueshima Seisakusho Co., Ltd. (50 ° C. × 10 minutes), and measure the reflectance of the cloth before and after washing with a color difference meter (SE2000) manufactured by Nippon Denshoku Industries Co., Ltd. (measurement wavelength 550 nm). Calculated.

The cleaning rate is shown in Table 1, and 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, the cleaning rate is clearly 52 to 53% and 57 to 58%. Can be recognized as a significant difference.
A: Excellent cleanability (cleaning rate of 55% or more)
○: Slightly excellent (cleaning rate of 50% or more and less than 55%)
×: Inferior (cleaning rate less than 50%)

(2) Foaming property 50 mL of a cleaning solution containing 0.3% by weight of the composition shown in Table 1 (the balance is 4 ° DH water) is put 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.
A: The amount of foam is very small (the foaming height is less than 10 mm).
○: The amount of foam is small (the foaming height is 10 mm or more and less than 30 mm)
Δ: The amount of foam is normal (foaming height of 30 mm or more and less than 50 mm)
×: Large amount of foam (bubble height of 50 mm or more)

(3) Recontamination prevention property A cotton cloth was cut into 6 cm × 6 cm to obtain a test cloth. A hardness adjusting liquid was put into 1 L of ion exchange water at 50 ° C. to prepare 4 ° DH hard water. Carbon black 0.25g was put in this, and it stirred and disperse | distributed for 5 minutes with the targotometer (rotation speed 80rpm / min). Next, the components shown in Table 1 were added at the ratios shown in Table 1 and washed for 10 minutes with a targotometer (rotation speed: 80 rpm / min), followed by rinsing for 1 minute, dehydration, and press drying. The test cloth after the main cleaning was measured with a color difference meter (SE2000) manufactured by Nippon Denshoku Industries Co., Ltd. (measurement wavelength: 550 nm), and the anti-contamination property (%) 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.
◎: Dirt is not attached (Re-contamination prevention is 80% or more)
○: Only a small amount of dirt is attached (re-contamination prevention property is 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%)

(4) Alkali scavenging prevention Assuming that rinsing is not good under an iron temperature of 170 ° C., 20 μL of a standard concentration solution is dropped, and immediately after ironing for 30 seconds, the discoloration of cotton cloth is changed to Nippon Denshoku Measurement was performed with a color difference meter (SE2000) manufactured by Kogyo Co., Ltd. (measurement wavelength: 460 nm), and the alkali blurring prevention property (%) was calculated by the following formula.

The alkali blurring prevention property is shown in Table 1. The alkali blurring prevention value is evaluated according to the following criteria, and 75% or more is preferable in consideration of practicality.
◎: Does not stop making any blur (80% or more to prevent alkali burn)
○: Slightly faded (prevention of alkali burnt, 75% or more and less than 80%)
△: Recognize a considerable amount of money (prevention of alkali loss 70% to less than 75%)
X: Clearly recognizes loss (prevention of alkali loss less than 70%)

* Nonionic surfactant (1): R ¹ in the general formula (I) is an alkyl group having 8 to 18 carbon atoms (alkyl group derived from coconut oil), p is 5, q is 4.5, and r is 5 nonionic surfactant [trade name Emulgen MS110, manufactured by Kao Corporation]
* Nonionic surfactant (2): R ¹ in general formula (I) is an alkyl group having 8 to 18 carbon atoms (alkyl group derived from coconut oil), p is 5, q is 1.5, and r is 5 Nonionic Surfactant [trade name Emulgen LS106, manufactured by Kao Corporation]
* Nonionic surfactant (3): Polyoxyethylene lauryl ether [trade name Emulgen 109, manufactured by Kao Corporation]
* Rice bran fatty acid sodium: 16% by weight of sodium palmitate, 2% by weight of sodium stearate, 42% by weight of sodium oleate, 38% by weight of sodium linoleate, 2% by weight of sodium linolenate [Product name: Moon Star Cleaning Soap, Kao Corporation ) Made]
* Zeolite: Shilton B, manufactured by Mizusawa Chemical Industry Co., Ltd., calcium ion scavenging capacity 230CaCO ₃ mg / g
* Sodium tripolyphosphate: trade name sodium tripolyphosphate, manufactured by Shimonoseki Mitsui Chemicals, Inc., calcium ion scavenging capacity 460CaCO ₃ mg / g
* EDTA.4Na: Ethylenediaminetetraacetic acid tetrasodium salt [trade name: Clavion TS, manufactured by Tozai Oil Co., Ltd., calcium ion scavenging capacity 288CaCO ₃ mg / g]
* 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) 1 to 20% by weight of a nonionic surfactant represented by the following general formula (I), (B) 1 to 20% by weight of a fatty acid salt having 10 to 22 carbon atoms, (C) a water-insoluble chelating agent 1 to 1 A powder detergent composition for clothing containing 50% by weight and (D) an alkali agent in an amount of 10 to 50% by weight.
R ¹ −O− (EO) _p − (PO) _q − (EO) _r −H (I)
[Wherein, R ¹ represents an alkyl group or alkenyl group having 8 to 18 carbon atoms, 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. ] The powder detergent composition for clothing according to claim 1, wherein the calcium ion scavenging ability of (C) is 200 to 600 CaCO ₃ mg / g.   The powder detergent composition for clothing according to claim 1 or 2, wherein (D) is at least one selected from the group consisting of alkali metal or alkaline earth metal hydroxides, silicates and carbonates.