JPH072955B2 - Cleaning composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a detergent composition, and more specifically to a detergent excellent in detergency, particularly in preventing yellowing of clothes and anti-caking of washing particles. It relates to a composition.

[Conventional technology]

The α-sulfofatty acid ester salt has good hardness and water resistance, and also has outstanding detergency and stain dispersibility, and has very good biodegradability. It is regarded as important as a surfactant. Examples of blending an α-sulfo fatty acid ester salt as an active ingredient of a powder detergent include, for example, JP-B-48-23525, a neutral detergent composition in which a large amount of polyacrylate and an enzyme are used in combination, JP-A-49- 64609 discloses a detergent composition in which an alkyl sulfate, an alkyl ethoxy sulfate and other active agents are used in combination, and JP-A-50-38708 discloses a detergent composition in which a foam inhibitor and polyacrylic acid are used in combination, Japanese Examined Patent Publication (Kokoku) No. 58-45997 discloses a detergent composition in which an alkyl ethoxy sulfate and polyethylene glycol are used in combination.

[Problems to be solved by the invention]

However, even though these detergents have excellent detergency, their anti-yellowing properties and anti-caking properties of detergent particles, especially for clothes, are still insufficient.

[Means for solving problems]

It is well known that white clothes turn yellow after repeated normal washing with tap water, which is mainly due to the iron contained in the tap water depositing on the clothes. There is. As a result of repeated research to provide a detergent composition capable of preventing yellowing of clothes due to the deposition of iron on the clothes, α-sulfo fatty acid ester salt and higher alcohol sulfate ester salt, and ethylene oxide adduct of higher alcohol It has been found that a composition obtained by blending at least one of the sulfate ester salts described above with polyacrylic acid salt and zeolite in a specific ratio can achieve the object. Surprisingly, it was also revealed that the detergent blended in this proportion was difficult to cake. The present inventors have completed the present invention based on these findings.

That is, the present invention provides (A) the general formula (Wherein R ₁ is a C _{10 to} C ₂₀ alkyl group, R ₂ is a C _{1 to} C ₃ alkyl group, and M is an alkali metal or an alkaline earth metal). (B) C _{8 to} C ₂₄ higher alcohol sulfate ester salt and / or C _{8 to} C ₂₄ higher alcohol ethylene oxide adduct sulfate ester salt (ethylene oxide addition mole number 1 to 10)
2 to 15% by weight (C) Polyacrylic acid salt (degree of polymerization 10 to 200) 1 to 10% by weight (D) Zeolite 5 to 35% by weight, and the weight ratio of component (A) and component (B) Is 1/3
The present invention provides a detergent composition, characterized in that the cleaning composition is 3/1.

As the α-sulfofatty acid ester salt of component (A), a derivative of an ester of a linear saturated fatty acid having 10 to 20 carbon atoms, preferably 12 to 18 carbon atoms and a saturated monohydric alcohol having 1 to 3 carbon atoms, preferably Include salts of esters with methanol and ethanol. Sodium salts of sulfo fatty acid esters made from natural hardened fatty acids and fatty acid mixtures,
For example, it is advantageous to use stearic acid methyl ester, palmitic acid ethyl ester, hydrogenated palm kernel fatty acid methyl ester or hydrogenated tallow fatty acid methyl ester α-sulfonic acid sodium salt. The α-sulfofatty acid ester salt generally comprises in a subordinate amount an α-sulfofatty acid di-salt, which can be produced by industrial work-up, for example by hydrolysis of the ester bond during bleaching or neutralization with H ₂ O. The disalt is present in industrial products in an amount of 5 to 25% by weight, but this does not impair the working effect of the product. Therefore, in the following, the α-sulfo fatty acid ester salt means an industrial disalt-containing product.

The higher alcohol sulfate ester salt (alkyl sulfate) used as the component (B) in the present invention can be produced by a conventional method using a higher alcohol having 8 to 24 carbon atoms as a raw material. In this case, as the starting higher alcohol, an alcohol derived from natural fats and oils (eg beef tallow, coconut oil, etc.) can be used, and also an alcohol synthesized from an olefin by an oxo method or a Ziegler catalyst can be used. Examples of the cation include sodium and potassium.

Similarly, a sulfate of a higher alcohol ethylene oxide adduct (hereinafter referred to as AES), which is also used as an active ingredient, is used in the presence of an alkali catalyst such as NaOH or KOH, or an acid catalyst such as SnCl ₄ , BF ₃ -etherate, etc. Under pressure or atmospheric pressure, ethoxylation reaction is carried out so that the average number of moles of ethylene oxide (EO) added becomes 1 to 10, and then the obtained alcohol ethoxylate is treated with a conventional continuous thin film type sulfonation apparatus or tank type sulfone. It is obtained by neutralizing after the sulfation reaction in the oxidizer. Here palm oil as a raw material alcohol used, secondary alcohol obtained by combining the alcohol of C ₈ -C ₂₄ derived from natural fats of beef tallow alcohol was synthesized by the oxo process or the Ziegler catalyst from olefins, by oxidation of paraffin Etc., and as the salt, an alkali metal salt, an alkaline earth metal salt or a mixture thereof is used.

The polyacrylate used as the component (C) in the present invention is 10
Alkali metal salts, especially sodium salts, are preferably used as the salt.

As the zeolite of the component (D) in the composition of the present invention, those commercially available as A-type, X-type or amorphous synthetic zeolite can be used, and the content thereof is 5 to 35% by weight, preferably 10%. Is in the range of up to 25% by weight.
If the content of this zeolite is less than 5% by weight, the physical properties of the powder at the time of production are inferior and a satisfactory detergency cannot be obtained, and if it exceeds 35% by weight, the zeolite particles adhere to the article to be washed, which is preferable. Absent.

The content of the α-sulfo fatty acid ester salt in the present invention is 2 to 15% by weight (hereinafter simply referred to as%), preferably 5 to 10%.
% Range. If the content is less than 2%, a satisfactory detergency cannot be obtained, and if it exceeds 15%, the detergent is hardened, which is not preferable.

Higher alcohol sulfate or / and in the composition of the present invention
The content of AES is in the range of 2 to 15%, preferably 2 to 10%. If this content is less than 2%, a satisfactory detergency cannot be obtained, and if it exceeds 15%, it does not work effectively for preventing the deposition of iron.

The content of polyacrylate in the composition of the present invention is 1 to
It is in the range of 10%. If the content is less than 1%, a satisfactory iron deposition preventing effect is not exhibited, and if it exceeds 10%, detergent caking occurs, which is not preferable.

Further, it is necessary that the ratio of the component (A) and the component (B) is 1/3 to 3/1. If it deviates from this range, it is impossible to obtain the detergency, the effect of preventing the deposition of iron, and the effect of preventing solidification.

The detergent composition of the present invention includes a linear alkylbenzene sulfonate, an α-olefin sulfonate, an anionic surfactant such as saturated or unsaturated fatty acid salt, polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether. A nonionic surfactant such as a higher fatty acid alkanolamide or an ethylene oxide adduct thereof can be used within a range that does not impair the effects of the present invention.

The compounding amount of the anionic surfactant including the essential components (A) and (B) of the present invention is preferably the same as the compounding amount in a general detergent composition, that is, 15 to 25%. .

Others The detergent composition of the present invention may contain the following components.

(1) Alkaline agents such as silicates, carbonates and sesquicarbonates (2) Orthophosphates, pyrophosphates, tripolinates, nitrilotriacetic acid salts, ethylenediaminetetraacetic acid salts, citrate salts, isocitric acid salts, Divalent metal ion scavengers such as polyacetal carboxylate polymers described in JP-A-54-52196 (3) Recontamination inhibitors such as polyvinyl alcohol, polyvinylpyrrolidone, carboxymethyl cellulose, polyethylene glycol (4) Sodium percarbonate , Bleaching agents such as sodium perborate, sodium hydrogen peroxide adduct, etc. (5) Enzymes such as protease, esterase, lipase, cellulase, etc. Other bleach activators, peroxide stabilizers, antioxidants, fluorescent Ingredients commonly used in detergents such as dyes, bluing agents, photo-activated bleaching agents and fragrances.

〔Example〕

The present invention will be further described below with reference to examples. The composition of the present invention (No. 2,5,6,9,1) having the composition shown in Table 1 (numerical values represent% by weight)
0,11,13) and comparative products (No, 1,3,4,7,8,12,14,15,16,17) were subjected to the following tests. The results are also shown in Table 1.

Detergency test Put 12 pieces of 10 x 10 cm artificially contaminated cloth in detergent solution 1 and add uncontaminated cloth of the same size so that the bath ratio is 1/60. Washed with.

The washing conditions and oil composition of the artificially contaminated cloth are as follows.

[Washing conditions]

Washing time 10 minutes Detergent concentration 0.133% Water hardness 4 ° DH Water temperature 20 ° C. Sugi 5 minutes in tap water [oil composition of artificially contaminated cloth] Cottonseed oil 60% Cholesterol 10 Oleic acid 10 Palmitic acid 10 Liquid and solid paraffin 10 Detergency is measured by measuring the reflectance of raw cloth before contamination (carbon black is mixed as an indicator by an ordinary method) and contaminated cloth before and after washing with a colorimeter (Shimadzu Corporation) using the following formula. I asked. (The table shows the average value of 12 measurements).

Iron deposition amount evaluation test 1) Washing conditions ... Using a Toshiba electric washing machine "Ginga" as a washing device, put 1 kg of cotton undergarment into it, and tap water to give a bath ratio of 1/3
Set to 0. After washing for 10 minutes at 20 ° C., rinsing is carried out twice for 3 minutes, and naturally dried. Repeat this operation 50 times.

2) Atomic absorption analysis ... 1g cotton sampled from underwear,
After completely ashing, the solution was dissolved in 20 cc of 2N HCl, and then the solution of 50 cc was measured for Fe deposition amount by an atomic absorption spectrometer (calibration curve-Flameless method). Numerical value is F contained in 1 g of cotton cloth
e amount.

Caking test Each of the cleaning agents shown in Table 1 was packed into a carton for detergent, which was not subjected to a moisture-proof treatment, in an amount of 2.65 kg each, and allowed to stand in a room adjusted to 30 ° C and 80% RH. After leaving it for a certain period of time, the carton was opened gently, and the weight ratio of the detergent solidified to 5 mm or more was determined by a sieve having an opening of 5 mm to compare the ease of caking.

Next, regarding the composition of the present invention (No. 18, 19, 20) and the comparative product (No. 21, 22, 23) having the compositions shown in Table 2 (numerical values represent% by weight), the solution concentration was 0.133%. An aqueous detergent solution was prepared. Using this solution, the detergency and iron ion deposition amount were examined under the same conditions as in the method of Table 1. The results are also shown in Table 2.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location C11D 3:12 3:37) (56) References JP-A-60-88100 (JP, A) Special features Kai 59-51967 (JP, A) JP 59-211673 (JP, A) JP 58-122997 (JP, A)

Claims (1)

[Claims] 1. A general formula (A) (Wherein R ₁ is a C _{10 to} C ₂₀ alkyl group, R ₂ is a C _{1 to} C ₃ alkyl group, and M is an alkali metal or an alkaline earth metal). (B) C _{8 to} C ₂₄ higher alcohol sulfate ester salt and / or C _{8 to} C ₂₄ higher alcohol ethylene oxide adduct sulfate ester salt (ethylene oxide addition mole number 1 to 10)
2 to 15% by weight (C) Polyacrylic acid salt (degree of polymerization 10 to 200) 1 to 10% by weight (D) Zeolite 5 to 35% by weight, and the weight ratio of component (A) and component (B) Is 1/3
The cleaning composition is characterized in that it is 3/1.