JP2000034494A - Sheet-like laundering item - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a sheet-like laundering item which is free from the scatter or loss of contents, enables the adjustment of the amount to be used, and has an improved low-temp. solubility by bonding a water-soluble substrate to both sides of a dough-like detergent compsn. layer contg. a builder and an amine salt of an anionic surfactant. SOLUTION: (A) An amine salt of an anionic surfactant in an amount of 5-80 wt.%, pref. 20-60 wt.%, (B) 5-70 wt.%, pref. 10-60 wt.%, builder (B), and optionally (C) 0.5-30 wt.%, pref. 0.5-20 wt.%, nonionic surfactant are compounded in a wt. ratio of A/B of (1/5)-(10/1) and in a wt. ratio of A/C of (2/1)-(70/1) to give a dough-like detergent compsn. having a penetration hardness (25 deg.C) of 0.1-10 kg/cm2 and a thickness of 1 cm or lower, pref. 0.005-0.7 cm. To both sides of the detergent compsn. a water-soluble substrate having a thickness of 5-200 μm, pref. 10-100 μm, is bonded to give a sheet-like laundering item having a thickness of 1 cm or lower, pref. 0.05-0.8 cm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet-like laundry article.

[0002]

2. Description of the Related Art There is known a one-pack detergent in which a detergent for one washing is separated and packaged with a water-soluble film (JP-A-63-12467). However, when washing a small amount of clothes, the contents such as powder may be scattered if the detergent packed in the packaging unit is broken and used, or the remaining broken detergent-containing packaging must be stored. There is a problem that it is difficult to arbitrarily adjust the amount of detergent used.

The present applicant has proposed a sheet-like laundry article having a water-soluble substrate disposed on both sides of a layer containing a detergent composition (JP-A-10-72599). However, specific examples of the description of the anionic surfactant in the detergent composition include coconut oil fatty acid sodium, LAS-Na, AS
Only a form using a sodium salt of an anionic surfactant such as -Na is disclosed. An object of the present invention is to provide a sheet-like laundry article in which the content such as powder is not scattered or lost, the amount of use can be arbitrarily adjusted, and the low-temperature solubility is remarkably improved.

[0004]

SUMMARY OF THE INVENTION The present invention provides a dough-like detergent composition containing (a) 5 to 80% by weight of an amine salt of an anionic surfactant and (b) 5 to 70% by weight of a builder. And a water-soluble substrate on both sides of the layer.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [Cleaning composition] The amine salt of the anionic surfactant [component (a)] of the present invention includes, for example, amine salts of sulfates of higher alcohols or ethoxylated products thereof, Examples thereof include an amine salt of an alkylbenzene sulfonic acid, an amine salt of a paraffin sulfonic acid, an amine salt of an α-olefin sulfonic acid, an amine salt of an α-sulfofatty acid, an amine salt of an α-sulfofatty acid alkyl ester, and an amine salt of a fatty acid. In particular, amine salts of straight-chain alkylbenzene sulfonic acids having 10 to 14 carbon atoms in the alkyl chain and amine salts of sulfates of higher alcohols having 12 to 18 carbon atoms are preferred in terms of detergency and foam properties.

The amine of the present invention includes, for example, compounds of the following general formulas (1) to (4).

[0007]

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(Wherein R _{1 to} R ₁₀ are the same or different and each have 1 to 1 carbon atoms which may be substituted by a hydrogen atom or a carboxyl group)
8 hydrocarbon group, a monovalent or higher-valent hydroxy hydrocarbon group having 1 to 18 carbon atoms, an oxyalkyl group,-(EO) m- (P
O) nH (where EO represents ethylene oxide, PO represents propylene oxide, and EO and PO may be block polymerization or random polymerization. M and n are each 0 or more, and m + n is 1 or more), COR ₁₁ Group (however, R
₁₁ shows the same meaning as R _1. ), And L represents a carbon number of 1 to 1.
And a phenylene group which may be substituted with an alkylene group having 12 or an alkyl group having 1 to 5 carbon atoms. However, R _{1 to} R ₃ are not all hydrogen atoms at the same time. )

Compounds of the general formula (1) include monoethanolamine, diethanolamine, triethanolamine, 3-amino-1-propanol, N-β-aminoethylisopropanolamine, N, N-dimethyl (or ethyl, butyl) Alkanolamines such as ethanolamine, N-methyldiethanolamine, N, N-diethylisopropanolamine, trimethylamine, triethylamine, 2-ethylhexylamine, sec-
Examples thereof include alkylamines such as butylamine, and alkoxyamines such as 3-methoxypropylamine and 3- (2-ethylhexyloxy) propylamine. In particular, monoethanolamine, diethanolamine, and triethanolamine are preferred in terms of economy.

The compounds of the general formula (2) include N, N,
N ', N'-tetramethylethylenediamine, 3- (diethyl (or butyl) amino) propylamine, 3
-(Methylamino) propylamine, 3- (dimethylamino) propylamine, N-hydroxyethyl-N-methyl-1,3-propanediamine, N, N-dihydroxyethyl-N ′, N′-dimethyl-1, 3-propanediamine, N-hydroxyethyl-N ′, N′-dimethyl-1,3-propanediamine, N, N-dihydroxyethyl-N′-hydroxyethyl-N′-methyl-1,
Examples thereof include diamines such as 3-propanediamine, and compounds of the following general formulas (5) to (11). Particularly, a compound having a hydroxyl group is preferable.

[0011]

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Further, there may be mentioned compounds of the following general formula (12). For example, Tetronic TR701 manufactured by Asahi Denka
(10% by weight of EO in the total molecule, molecular weight of polypropylene glycol is 250-3000), Tetronic TR
-1501 (10% by weight of EO in total molecule, molecular weight of polypropylene glycol is 6501 to 7000), Tetronic TR-1508 (80% by weight of EO in total molecule,
Polypropylene glycol having a molecular weight of 6501 to 700
0) and tetronic TR-304 (40% by weight of EO in total molecule, molecular weight of polypropylene glycol of 501)
To 1000).

[0013]

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(Where x is a value satisfying 10 to 80% by weight of ethylene oxide in the total molecular weight, and y is a value satisfying a polypropylene glycol molecular weight of 500 to 7000).

The compound of the general formula (3) includes morpholine,
N-methylmorpholine, N-ethylmorpholine and the like include compounds of the general formula (4) such as piperazine and hydrates thereof,
Hydroxyethylpiperazine, 2-methylpiperazine and the like can be mentioned. Particularly in terms of low-temperature solubility, the above (5) to
The compound of (11) is preferred.

The use of an amine salt of an anionic surfactant is different from a sodium salt in that the low temperature solubility of a sheet-like laundry article is remarkably improved, and an unneutralized surfactant is mixed with the above amine compound. This is preferable in that a flexible dough-like detergent composition having substantially no fluidity can be produced only by stirring, and an odor derived from impurities can be reduced.
In addition, a sodium salt, a potassium salt and the like of an anionic surfactant may be contained as long as the above effects are not impaired. The content of the component (a) is 5 to 80% by weight, more preferably 20 to 60% by weight in the detergent composition in terms of detergency.
Particularly preferably, it is 30 to 50% by weight. The method for quantifying the component (a) is as follows. For example, the anionic surfactant is described in the revised column of the third edition of Yushi Kagaku Handbook (issued by Maruzen) (published in the 2nd printing), page 456, right column, lower row, line 8 to page 457, left column. The benzethonium chloride method described in the first six lines and the amine can be obtained by a liquid chromatography method.

The detergent composition of the present invention can further contain a nonionic surfactant [component (c)].
The component (c) includes, for example, an EO adduct or an EO / PO adduct of a higher alcohol, a fatty acid alkanolamide, an alkyl polyglycoside, and the like. Particularly, an adduct of an alcohol having 10 to 16 carbon atoms with 5 to 10 moles of EO is preferred in terms of removing sebum stains, hard water resistance, biodegradability, and compatibility with a linear alkylbenzene sulfonate.

The content of the component (c) is preferably 0.5 to 30% by weight, more preferably 0.5 to 20% by weight, particularly preferably 1 to 1% by weight in the detergent composition from the viewpoint of removing sebum stains.
0% by weight. Further, the weight ratio of the component (a) to the component (c) is preferably 2/1 to 70/1, and more preferably 5/1 to 50/1 in terms of detergency.

The builder [component (b)] of the present invention includes, for example, carbonate, crystalline aluminosilicate, amorphous aluminosilicate, crystalline silicate, amorphous silicate, phosphate, and borate. And alkali metal salts such as sodium and potassium such as organic builders such as inorganic builders such as acid salts and nitrilotriacetate, ethylenediaminetetraacetate, tartrate, citrate and acrylic acid (co) polymer. In particular, a crystalline aluminosilicate is preferred from the viewpoint of the action of capturing polyvalent metal ions such as calcium ions.

The content of the component (b) is from 5 to 70% by weight, more preferably from 10 to 70% by weight in the detergent composition from the viewpoint of improving detergency.
It is 60% by weight, particularly preferably 15 to 55% by weight.
The weight ratio of the component (a) to the component (b) is preferably (a) / (b) = 1/5 to 10/1 in that a dough having detergency and flexibility can be produced. More preferably 1
/ 3 to 3/1, particularly preferably 1/2 to 3/2.

The preferred cleaning composition of the present invention comprises (a)
20-60% by weight of an amine salt of an anionic surfactant,
(B) 10 to 60% by weight of a builder, (c) 0.5 to 20% by weight of a nonionic surfactant, and the weight ratio of (a) and (b) is (a) / (b). = 1/3 to 3/1. Particularly preferred detergent compositions of the present invention include (a) 30 to 50% by weight of an amine salt of a linear alkylbenzene sulfonic acid, (b) 15 to 55% by weight of a builder, and (c) an EO adduct of a higher alcohol of 1 to 10%. % By weight, and
The weight ratio of (a) and (b) is (a) / (b) = 1/2 to 3
/ 2.

[0022] The cleaning composition of the present invention can contain enzymes and fragrances. Examples of the enzyme include protease, lipase, cellulase, amylase and the like, and a combination of protease and cellulase is preferable, and the content is 0.001 to 5%. Flavors include linalool, geraniol, citronellol, phenylethyl alcohol, geranyl acetate, benzyl acetate, phenylethyl acetate, citral, limonene, terpinolene, 4-
(4-hydroxy-4-methylpentyl) -3-cyclohexene-1-carboxaldehyde, α-hexylcinnamic aldehyde, α-isomethylyonone, 1,
3,4,6,7,8-hexahydro-4,6,6,7,
8,8-hexamethylcyclopenta-γ-2-benzopyran, synthetic sandals, trichloromethylphenylcarbinol acetate, 1,2-benzopyran, ethyl-β-phenylacrylate, acetylsedrene, 1-methyl-4
One or more selected from -isopropyl-1-cyclohexen-8-ol is preferable, and the content is 0.001.
~ 5%.

The detergent composition of the present invention may be a cationic surfactant, amphoteric surfactant or a bleaching agent (percarbonate, perborate, bleach activator, etc.) known in the field of clothing detergents. , A re-staining agent (such as carboxymethyl cellulose), a softening agent, a reducing agent (such as a sulfite), a fluorescent whitening agent, and a foam inhibitor (such as silicone).

The water content in the cleaning composition of the present invention is preferably 0.03 from the viewpoint of preventing blocking due to dissolution of the water-soluble substrate and preventing drying of the cleaning composition.
It is 1% to 7%, more preferably 0.1% to 5%, particularly preferably 0.5% to 3%. The water of crystallization such as zeolite, carbonate and citrate is excluded.

The dough-like detergent composition of the present invention preferably has a penetration hardness at 25 ° C. of 0.1 to 10 kg / cm ² , more preferably 0.5 to 10 kg / cm ² , particularly preferably 1 to 10 kg. / Cm ² . Here, “dough” refers to a kneaded product of a powder composition and a fluid substance such as a liquid, paste, or gel composition. The substance having fluidity includes a substance having fluidity due to heating or stress. In addition, the penetration hardness was measured using a rheometer (FUDOH RT-201) on the surface of the detergent composition kept at 25 ° C.
(0J-CW) adapter (bottom area: 1 cm ² ) is pressed, and the stress can be determined by measuring the stress when the adapter enters the cleaning composition at a penetration speed of 30 cm / min for 2 cm. The viscosity of the detergent composition (Tokyo Keiki DVM-B rotor No. 4, rotation speed 3 rpm, 25 ° C.)
Is 100,000 mPa · s or more, more preferably 200,000 mPa · s
Pa · s or more.

The dough-like detergent composition of the present invention has a paste-like detergent (usually having a viscosity of 100,000 mPa ·
s, and the penetration hardness is less than 0.1 kg / cm ² ). Therefore, the sheet-like laundry article of the present invention is easy to process the sheet, and the content such as the detergent powder is scattered even when the sheet is broken by hand or when touched with a wet hand to adjust the amount of use. There is no fear of loss.

The production of the dough of the present invention can be carried out, for example, by mixing and / or neutralizing an amine with an unneutralized anionic surfactant alone or a mixture with a nonionic surfactant.
It is preferable to stir and mix components having low heat resistance, such as builders, enzymes, bleaching agents, and fragrances, from the viewpoint of shortening the production time and preventing deterioration of the builders and the like. After preparing the amine salt of the anionic surfactant in advance, the components such as the builder may be mixed in another reaction tank. Further, the molar ratio of mixing and / or neutralization of the unneutralized product and the amine is preferably 1/1 to 1
5/1, more preferably 3/2 to 3/1. In the case of a diamine, the ratio is preferably 2/1 to 10/1, more preferably 3/1 to 6/1.

The dough of the present invention can be produced using a universal stirrer, kneader or the like suitable for high-viscosity stirring. Also,
By adding a polyalkylene glycol having a molecular weight of 2000 or more, a flexible dough having substantially no fluidity can be produced in a short time. The thickness of the layer containing the cleaning composition is preferably 1 c in view of low-temperature solubility and simplicity.
m, more preferably 0.005 to 0.7 cm, particularly preferably 0.02 to 0.4 cm.

[Water-soluble substrate] The water-soluble substrate of the present invention comprises:
Bonded to both sides of the layer containing the detergent composition, maintaining the shape of the sheet-like laundry article, preventing the contents such as detergent powder,
Requires alkali resistance and the ability to dissolve during washing. Here, “dissolution” means that 0.5 g of a water-soluble substrate is put into 1 liter of water at 50 ° C., and mixed and stirred for 10 minutes.
This refers to a state in which no residue is observed after passing through a sieve of 8.6 (2000Pm).

Examples of the water-soluble substrate of the present invention include a water-soluble film, a water-soluble nonwoven fabric or woven fabric containing a water-soluble polymer fiber, a water-soluble laminated substrate composed of a water-soluble film and the water-soluble nonwoven fabric or woven fabric, and the like. Can be In particular, a water-soluble substrate such as a water-soluble nonwoven fabric or a water-soluble laminated substrate containing a water-soluble polymer is preferred from the viewpoint of preventing the sheet-like laundry articles from blocking each other due to moisture and from the viewpoint of simplicity.

The water-soluble substrate of the present invention includes, for example, polyvinyl alcohol, polyvinyl pyrrolidone, pullulan, polyacrylamide, polyacrylic acid (salt), polymethacrylic acid (salt), polyitaconic acid (salt), polyethylene oxide, polyvinyl methylene Water-soluble substrates containing alkali-resistant water-soluble polymers such as ether, xanthan gum, guar gum, collagen, carboxymethylcellulose, hydroxyethylcellulose and hydroxypropylcellulose can be mentioned.

In particular, partially saponified polyvinyl alcohol having a degree of saponification of less than 96 mol%, or a degree of saponification of 96 mol% or more, preferably 98 mol% or more, and an average degree of polymerization of 250 to 3,000, preferably A saponified anion group-modified polyvinyl alcohol having a molecular weight of 500 to 2500 is preferred. Examples of the monomer having an anionic group include unsaturated carboxylic acids such as acrylic acid, crotonic acid, maleic acid, fumaric acid, and itaconic acid, and esters or anhydrides thereof, and itaconic acid is particularly preferable. The modification ratio of the anionic group is 0.1 to 8 mol%, preferably 2 to 5 mol%, based on the total amount of the monomer units in all the molecules.

The water-soluble substrate of the present invention has processability,
In terms of flexibility, anti-blocking properties, and hydrophilicity, water-soluble substrates containing a polyhydric alcohol-based plasticizer such as ethylene glycol, propylene glycol, or glycerin, or an anionic or cationic surfactant may also be used.

The water-soluble substrate of the present invention is preferably provided with irregularities such as lattice-like or turtle-like shapes by embossing or the like, from the viewpoint of solubility and anti-blocking properties. In addition, the thickness of the water-soluble substrate depends on the type, characteristics, and amount of the cleaning composition,
In terms of flexibility, flexibility and ease of use, preferably 5 to
It is 200 μm, especially 10 to 100 μm.

The water-soluble laminated substrate may be produced, for example, by laminating a water-soluble nonwoven fabric or woven fabric and a water-soluble film and bonding them by heat sealing, or by coating the water-soluble nonwoven fabric or woven fabric with the water-soluble polymer. And bonding the laminated water-soluble films.

[Sheet-like laundry article] The sheet-like laundry article of the present invention comprises a layer containing a detergent composition and a water-soluble substrate on both sides of the layer. The sheet-like laundry article of the present invention includes, for example, a method in which the above-mentioned dough-like detergent composition is formed into a sheet shape in advance, and a water-soluble substrate is bonded to both surfaces thereof. While supplying between two or more rotating water-soluble sheets, a method of compression molding with a roller or a press machine, or a water-soluble substrate further impregnated with a dough-like detergent composition on both sides thereof It can be obtained by a joining method or the like. The entire surface of the cleaning composition and the water-soluble substrate is preferably bonded as long as the shape and performance of the sheet-like laundry article are not impaired.

The sheet-like laundry article is preferably subjected to a thermocompression treatment in order to prevent the contents from being lost, and to a water-soluble substrate being perforated in order to make it easier to break. The thickness of the sheet-like laundry article is preferably 1 cm or less, more preferably 0.05 to 0.8 cm, in terms of solubility or flexibility.
More preferably, it is 0.1 to 0.5 cm, and its area density is preferably 0.005 to 1.8 g / cm.
² , more preferably 0.02 to 0.7 g / cm ² .

[0038]

EXAMPLES Example 1-10 The detergent compositions (% by weight) shown in Tables 1 and 2 were charged into a Dalton universal mixing stirrer (type 5DM-03-r), and 25
After the temperature was adjusted to ° C, the mixture was stirred to obtain a uniform dough. next,
A layer containing a detergent composition having a length of 5 cm, a width of 10 cm and a thickness of 0.15 cm was obtained using a saver Dorseater (Econom STM513).

Next, a partially saponified polyvinyl alcohol having a polymerization degree of 1700 and a saponification degree of 88 mol% was mixed with a mixed solvent of dimethyl sulfoxide / methanol = 90/10 according to the method of Example 2 of JP-A-8-3848. The mixture was stirred and dissolved at 90 ° C. under nitrogen to obtain a spinning stock solution. This spinning stock solution was wet-spun, subjected to wet heat stretching, and dried, and the resulting dry stock solution was subjected to dry heat stretching to obtain a nonwoven fabric having a basis weight (basis weight) of 25 g / m ² .

A saponification degree of 98 mol% and a polymerization degree of 180
0 anion group-modified polyvinyl alcohol (Kuraray K
M-118) A film was prepared from an aqueous solution containing 15% and 2% glycerin by thin-film hot-air drying, and was thermally bonded to the nonwoven fabric to prepare a laminated substrate. The laminated substrate and the layer containing the detergent composition are bonded with the nonwoven fabric surface facing outside,
Perforation was performed to obtain a sheet-like laundry article. The average weight was 10 g, and the average area density was 0.2 g / cm ² .

Each of the penetration hardness and viscosity at 25 ° C. of the detergent composition of Example 1-10 was 1 to 7 kg.
/ Cm ² , 100,000 mPa · s or more. Further, the loss rate and the low-temperature dissolution rate of the contents from the sheet-like laundry article were evaluated based on the following measurement methods. The results are shown in Tables 1 and 2.

(1) Method of measuring the loss property of the contents: temperature 20 ° C., humidity 60% H. In the above, after the center portion of the sheet-like laundry article 10g is cut in half, the cut portion is turned down to 3
While hanging for 0 minutes, the content loss rate is measured. If the lost amount is less than 0.5 g, the loss rate is evaluated as ○ and 0.
If it is 5 g or more, it is evaluated as x.

(2) Method of measuring low-temperature dissolution rate 10 g of the above-mentioned sheet-like laundry article was washed with 5 ℃, 30 liters of tap water in a washing machine (Galaxy 3.6 (VH360S manufactured by Toshiba Corporation).
1)). After stirring for 5 minutes at “strong rotation”, dehydration and drainage are performed. Next, the detergent residue in the drain port equipped with a 500 μm sieve and the washing machine was collected, and after drying at room temperature, the weight was measured, and the dissolution rate was calculated based on the following equation to obtain a solubility index. Those having a residue weight of less than 5 g are completely dissolved under general washing conditions (10 minutes). Dissolution rate (%) = (weight before charging-residue weight) / (weight before charging) * 100

[0044]

[Table 1]

[0045]

[Table 2]

(Note) The symbols in the table have the following meanings. A: a linear alkylbenzene sulfonate having 10 to 13 carbon atoms B: a fatty acid salt having 10 to 18 carbon atoms C: a sulfuric acid ester of a mixture of alcohols having 12, 14, 16 carbon atoms (weight ratio: 1: 1: 1) Monoethanolamine salt D: Monoethanolamine salt of sulfate ester of EO average 2 mol adduct of alcohol having 12 to 15 carbon atoms

E: mixture of sodium salt of linear alkylbenzene sulfonic acid having 10 to 13 carbon atoms and potassium salt thereof (weight ratio: 1: 1) F: fatty acid having 14 to 1 carbon atoms excluding carboxyl group
G-α-sulfofatty acid methyl ester sodium salt G: α-sulfo fatty acid having 12,14,16 carbon atoms (weight ratio: 1: 1: 1)
Mixture of olefinsulfonic acid sodium salt (average molecular weight 309, mixture of hydroxyalkanesulfonic acid salt and alkenesulfonic acid salt (weight ratio 1: 1))

H: adduct of lauryl alcohol having an average of 6 moles of EO I: adduct of a secondary alcohol having 12 to 14 carbon atoms having an average of 7 moles of EO (Nippon Shokubai Sotanol 70) J: mixture of alcohols having 12 and 14 carbon atoms (Weight ratio 4: 1) EO average 3 mol, PO average 2 mol, EO average 3 mol block adduct K: EO average 6.5 of mixture of alcohols having 12 and 13 carbon atoms (weight ratio 1: 1) Molar adduct (Nonidet, Mitsubishi Chemical)

L: Crystalline aluminosilicate, synthetic zeolite (Toyo Builder, manufactured by Tosoh Corporation) M: Amorphous aluminosilicate (Tixorex 25, manufactured by Rohm-Poulan) N: Sodium carbonate O: Sodium carbonate and potassium carbonate (Weight ratio 7: 3) P: sodium metasilicate Q: crystalline sodium silicate (SKS-6, Clariant Japan) R: sodium polyacrylate (Sok, BASF)
alan PA40) S: Sodium salt of acrylic acid / maleic acid copolymer (Sokalan CP 5 manufactured by BASF)

T: polyethylene glycol (molecular weight of about 6
000) U: Enzyme [Sabinase 18.0T Type White, Lipolase 10
0T, cellzyme 0.1T, Termamyl 60T (all manufactured by Novo Nordisk) mixed at 2: 1: 1: 1] 1
%, A fluorescent dye [a mixture of Whitetex SA (manufactured by Sumitomo Chemical Co., Ltd.) and Tinopearl CBS (manufactured by Ciba Geigy) at a weight ratio of 1: 1], 0.5%, sodium sulfite 1%, aminoalkyl-modified silicone oil 0.25 %, Fragrance 0.25%
And the amount of Glauber's salt to make the whole 100%]

A: monoethanolamine b: diethanolamine c: compound of the general formula (11) d: N-hydroxyethyl-N-methyl-1,3-propanediamine e: N-hydroxyethyl-N ', N'- Dimethyl-
1,3-propanediamine f: compound of general formula (5) g: compound of general formula (9) h: compound of general formula (10) i: Tetronic TR701 manufactured by Asahi Denka

Comparative Example 1 Washing was carried out in the same manner as in Example 1 except that the component (a) was a mixture of a sodium salt of a linear alkylbenzene sulfonic acid having 10 to 13 carbon atoms and a potassium salt thereof (weight ratio: 1: 1). An agent composition was prepared and perforated to obtain a sheet-like laundry article. The penetration hardness and viscosity at 25 ° C. are 9 kg
/ Cm ² , 100,000 mPa · s or more. In addition, although the loss property of the content is ○, there is a problem with the low-temperature solubility of 31% (Table 2).

Comparative Example 2 The detergent compositions shown in Table 1 were prepared in the same manner as in the examples, and were perforated to obtain sheet-like laundry articles. However,
It was a paste-like cleaning composition because it contained a large amount of liquid nonionic surfactant. The penetration hardness and viscosity at 25 ° C. are 0.1 kg / cm ² or less and 50,000 m, respectively.
Pa · s. The content was lost (Table 2).

[0054]

According to the sheet-like laundry article of the present invention, the content such as powder is not scattered or lost, the amount of use can be freely adjusted, and particularly the low-temperature solubility is remarkably improved.

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Yoizumi Mizushima 1334 Minato, Wakayama City, Kao Corporation Research Laboratory (72) Inventor Takefumi Kaharu 1334 Minato, Wakayama City, Kao Corporation Laboratory F-term (reference) 4H003 AB03 AB15 AB19 AB21 AB27 AB31 AB44 AB46 AC08 AC23 BA17 BA19 DA01 EA12 EA15 EA16 EA25 EA28 EB30 EB32 EB33 EB36 EB37 EC01 FA04 FA32

Claims (4)

[Claims] 1. A layer containing a dough-like detergent composition containing (a) an amine salt of an anionic surfactant in an amount of 5 to 80% by weight and (b) a builder in an amount of 5 to 70% by weight; A sheet-shaped laundry article having a water-soluble substrate bonded to both sides. 2. The sheet-like laundry article according to claim 1, wherein the detergent composition further comprises (c) 0.5 to 30% by weight of a nonionic surfactant. 3. The sheet-like laundry article according to claim 1, wherein the dough-like detergent composition has a penetration hardness at 25 ° C. of 0.1 to 10 kg / cm ² . 4. The sheet-like laundry article according to claim 1, wherein the water-soluble substrate contains a water-soluble polymer.