JPH0546879B2 - - Google Patents

Description

[Detailed description of the invention]

TECHNICAL FIELD The present invention relates to a detergent composition that exhibits appropriate foaming power during washing and has excellent detergency, and also has significantly improved turbidity of liquid during rinsing. BACKGROUND ART With the recent trend towards phosphorus-free detergents, the use of zeolite in place of phosphate builders has become widespread. However, detergents containing zeolite have the disadvantage that they cause greater turbidity during rinsing than conventional phosphorus-containing detergents containing polyphosphates, forcing consumers to take longer to rinse. Was. To date, many reports have been made regarding low-foaming detergents or detergents with good rinsing properties using polyethers in which ethylene oxide and propylene oxide are added to aliphatic primary alcohols. However, there is no mention of the relationship between detergents containing polyoxyethylene polyoxypropylene alkyl ether using primary alcohols and the turbidity of the rinsing solution. cannot be improved.
Regarding polyethers in which ethylene oxide and propylene oxide are added to secondary alcohols, JP-A-57-108197 discloses a surfactant aqueous solution composition containing this polyether and polyoxyethylene alkyl ether in combination. However, this relates to an aqueous solution composition whose viscosity is less dependent on temperature. OBJECTS OF THE INVENTION An object of the present invention is to provide a zeolite-containing detergent composition that causes less turbidity during rinsing and has good cleaning performance. Structure of the Invention The cleaning composition of the present invention comprises the following (a), (b) and
It is characterized in that it contains component (c), and the ratio of component (a) to component (c) is in the range of (a)/(c)=0.05 to 0.5 by weight. (a) an aliphatic secondary alcohol having 8 to 22 carbon atoms,
An average of 3 to 12 moles of ethylene oxide and an average of 3 to 15 moles of propylene oxide are mixed so that the ratio of the average number of added moles of ethylene oxide (m) to the average number of added moles of propylene oxide (n) is m/n = 0.5.
Polyoxyethylene polyoxypropylene alkyl ether added in the range of ~3: 0.1 to 5% by weight, (b) Anionic surfactant (excluding fatty acid alkali metal salts): 0.5 to 5% by weight, ( c) Zeolite: 3-30% by weight. The present invention will be explained in more detail below. Component (a), polyoxyethylene polyoxypropylene alkyl ether (hereinafter sometimes referred to as polyether), is obtained by adding ethylene oxide (EO) and propylene oxide (PO) to a secondary alcohol. Polyether using primary alcohol does not have a sufficient effect on liquid turbidity during cleaning. Representative examples of the polyether of component (a) include those expressed by the following general formula (). [In the formula, R ₁ , R ₂ , m, and n represent the following. R ₁ : Alkyl group or alkenyl group having 1 to 18 carbon atoms R ₂ : Alkyl group or alkenyl group having 1 to 18 carbon atoms However, the number of carbon atoms in R ₁ + R ₂ is 8 to 18 m: 3 to 12 (average of ethylene oxide) (number of moles added) n: 3 to 15 (average number of moles added of propylene oxide), however, m/n = 0.5 to 3] Note that in the polyol of the present invention, ethylene oxide (EO) and propylene oxide (PO) are randomly polymerized. However, block polymerization may also be used, and in that case, the order of bonding does not matter. Preferably, EO and PO are block polymerized so that PO forms a terminal. Also, m=3~
12, preferably m=5 to 12, n=3 to 15, preferably n=3 to 10. If the value of m deviates from the range of 3 to 12, or if the value of n deviates from the range of 3 to 15, a sufficient effect on liquid turbidity during rinsing cannot be obtained. The preferred range of _R1 + _R2 is _C12 to _C14 . Such polyether can be obtained, for example, as Softanol (manufactured by Nippon Shokubai Kagaku Kogyo Co., Ltd.). Softanol is C _12-14 second
It is an alcohol ethoxylate with propylene oxide added. Component (a) polyether is contained in the cleaning composition.
It is blended in an amount of 0.1 to 5 wt%, preferably 1 to 5 wt%. If this value is less than 0.1%, the effect of improving liquid turbidity during rinsing will not be sufficient, and if it exceeds 5wt%, foaming during washing will be significantly reduced, which is not preferable. The zeolite component (c) is at least 140
It has an ion exchange capacity of mgCaCO ₃ /1g (dry basis), an average particle size of 7μm or less, and a crystallinity of 0 to 100%.
Type A zeolites are suitable, and type A zeolites are preferred. By using such zeolite, better detergency can be obtained. Zeolite is blended in the cleaning composition in an amount of 3 to 30% by weight, preferably 5 to 20% by weight. This value is 3wt
If it is less than 30% by weight, sufficient cleaning power cannot be obtained, and if it exceeds 30wt%, the liquid becomes noticeably cloudy during rinsing. Furthermore, the weight ratio of component (a) and component (c) is (a)/(c).
= blended at a ratio of 0.05 to 0.5, preferably 0.1 to
It is 0.3. If this ratio is less than 0.05, the effect of improving the turbidity of the liquid during rinsing will be poor, and if it exceeds 0.5, good cleaning performance will not be obtained and the foaming power during cleaning will be reduced. As component (b), anionic surfactants other than fatty acid alkali metal salts are used, and specific examples thereof include linear alkylbenzenesulfonates having an alkyl group with an average carbon number of 10 to 16, and an average carbon number of 10 ~20 olefin sulfonate, having an average of 10 to 20 carbon atoms, a straight or branched alkyl or alkenyl group, and an average of 0.5 to 8 carbon atoms.
Alkyl ether sulfate or alkenyl ether sulfate to which a mole of ethylene oxide has been added, alkyl sulfate having an alkyl group having an average of 10 to 20 carbon atoms, α-sulfo fatty acid salt or α-sulfo fatty acid ester represented by the following general formula salt (In the formula, Y is an alkyl group or counter ion having 1 to 3 carbon atoms, Z is a counter ion, and R is an alkyl group or alkenyl group having 10 to 22 carbon atoms.) etc. can be used. Here, as the salt in the anionic surfactant, an alkali metal salt such as sodium or potassium is usually suitable. The anionic surfactant is blended in the cleaning composition in an amount of 5 to 30 wt%, preferably 10 to 25 wt%. This amount
If it is less than 5wt%, sufficient detergency cannot be obtained, and if it exceeds 30wt%, foaming during washing will increase significantly, which is not preferable as it may cause discomfort during use. In the cleaning composition of the present invention, the nonionic surfactant can also contain other surfactants such as a cationic surfactant, for example, an average carbon number of 10
has ~20 alkyl or alkenyl groups,
Examples include nonionic surfactants such as polyoxyethylene alkyl ether or polyoxyethylene alkenyl ether to which 1 to 20 moles of ethylene oxide are added. The cleaning composition of the present invention further includes, if necessary,
Organic or inorganic builders, sequestering agents, bulking agents such as Glauber's salt, fatty acid soap, enzymes effective for cleaning, optical brighteners, fragrances, etc. can be blended, but these are not particularly limited. . Examples of the builder include inorganic builders such as carbonates and silicates, aminopolyacetates such as nitrilotriacetate, ethylenediaminetetraacetate, and diethylenetriaminepentaacetate, polyvalent carboxylates such as citrate, and polyacrylates. Examples include polymer electrolytes such as acid salts and polyitaconates, and examples of enzymes include protease, lipase, and amylase. Effects of the Invention According to the present invention, a nonionic surfactant in which specific amounts of ethylene oxide and propylene oxide are added to a secondary alcohol, and a zeolite,
By blending anionic surfactants other than fatty acid alkali metals in specific amounts, the turbidity of the liquid during rinsing is greatly improved, making the rinsing process easier.Moreover, it foams appropriately during cleaning, making it easy to clean. A cleaning composition with excellent strength can be obtained. This composition can be made phosphorus-free and is particularly useful as a solid detergent, for example, as a granular detergent for clothing. Examples Detergent compositions having the compositions shown in Table 1 below were prepared by spray drying. In addition, the abbreviations in Table 1 mean the following. AS: Sodium lauryl alcohol sulfate AES: Sodium lauryl alcohol ethoxylate sulfate with an average number of moles of ethylene oxide added of 3 Polyether: Polyoxyethylene polyoxypropylene with ethylene oxide (EO) and propylene oxide (PO) added to the following fatty acid alcohols: Alkyl ether. Here, E.O.
And PO is block polymerized so that PO is added to the end.

[Table] Polyethylene glycol: Molecular weight: approximately 6000 For these detergent compositions, foaming and transparency during rinsing were measured as follows, and the results are shown in Table 1. Foaming test A 10wt% benzene solution of organic dirt containing the following dirt components was applied uniformly to the skin shirt to a concentration of 0.1wt% based on the weight of the fibers, and after air-drying, evaluation was performed under the following conditions. Dirt components Stains composition (wt%) Oleic acid 40.6 Triolein 22.4 Cholesterol oleate 17.5 Liquid paraffin 3.6 Squalene 3.6 Cholesterol 2.3 Gelatin 10.0, Evaluation method Using a washing machine and 3°DH water, bath volume 30, bath ratio The skin shirt with the organic dirt on it was washed under cleaning conditions of 1:30, detergent concentration 0.133%, and temperature 25℃.
After washing for 10 minutes, the foam was leveled over the entire liquid surface and the foam height was measured at three arbitrary locations, and the foaming power was evaluated based on the average foam height. Transparency measurement Detergent composition in a washing machine (thin type, reversible type)
A 0.14% tap water solution was prepared. Using the above-mentioned cotton knitted skin shirt with dirt attached as the cloth to be washed, wash it in a bath ratio of 1:30 at 25°C according to normal operation, and after dehydrating the cloth for 1 minute, it does not contain detergent composition. After rinsing once with water for 3 minutes, JIS K-
It was measured using the fluorometer described in 0102.

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Claims (1)

[Scope of Claims] 1 (a) An average of 3 to 12 moles of ethylene oxide and an average of 3 to 15 moles of propylene oxide are added to an aliphatic secondary alcohol having 8 to 22 carbon atoms, and the average number of moles of ethylene oxide added is m. The ratio of the average number of added moles of propylene oxide to n is m/n=
(b) Anionic surfactant (excluding fatty acid alkali metal salts): 5-30% by weight, and (c) Zeolite: Contains 3 to 30% by weight, and the ratio of component (a) to component (c) is in the range of (a)/(c) = 0.05 to 0.5 by weight. A cleaning composition.