JPH0762400A - Granular detergent composition - Google Patents

Abstract

PURPOSE:To obtain a granular detergent compsn. which is very sol. in cold water and keeps the tone of a colored fiber or fabric stable even in repeated washing by compounding a surfactant, a potassium salt of carbonic acid, and an amino acid, a dipeptide, or a tripeptide in a specified wt. ratio. CONSTITUTION:This compsn. contains 5-50wt.% surfactant (A), 1-20wt.% potassium salt of carbonic acid (B), and 0.1-10wt.% compd. selected from the group consisting of an amino acid, a dipeptide, a tripeptide, and their salts (C). An anionic and a nonionic surfactant are pref. as component A; potassium carbonate, potassium hydrogencarbonate, and sodium potassium carbonate, as component B; and compds. of aliph. amino acid types such as glycine, glutamic acid, or their sodium or potassium salts, as component C. Any other component may be added to the compsn. These components are made into a slurry and spray-dried, giving hollow beads with a bulk density of 0.2-0.5g/cc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a granular detergent composition which has an extremely high solubility in cold water and keeps the color tone of colored fibers and fabric stable even after repeated washing.

[0002]

2. Description of the Related Art In recent years, due to the progress of dyeing technology, the proportion of colored patterns in clothing worn on a daily basis has increased. Along with this, the problem of discoloration and fading has become conspicuous by repeatedly washing colored products with a cleaning agent. The cause of this is that the perchloric acid ion (ClO ⁻ ) contained in tap water generates a peroxy acid radical, which discolors and discolors by breaking the chemical bond of the dye, and the fluorescent whitening agent contained in the cleaning agent. It is considered that this is caused by the fact that the fibers are whitened and the color tone changes. As a method of solving these problems, there is a method of trapping hypochlorite ion in the former case, and addition of sulfite or the like can be considered. In the latter case, neutral detergents and the like excluding the fluorescent agent and the whitening agent are put on the market and used for fashionable clothes and underwear washing.

However, it cannot be said that addition of sulfite or the like is sufficient, and with the spread of fully automatic washing machines, the washing capacity that can be washed at one time increases, and reserved washing by microcomputer control or the like can be performed. Now that it has become possible, there is a tendency to wash laundry with various colored patterns in a single operation. In this case, there is a strong tendency to use weak alkaline detergents that occupy most of the commercially available detergents rather than using different detergents according to the laundry, and it is desirable to develop a weak alkaline detergent that does not cause discoloration or fading. It is rare. On the other hand, recently, a method for producing a high bulk density granular detergent which can be washed with a small amount of detergent has been proposed (JP-A-60-96698).
No. gazette), and it is on the market again. However, the high-bulk-density granular detergent has a problem that the detergent component is not hollow particles like the spray-drying detergent but the interior of the detergent particles is clogged, so that the solubility is likely to decrease.

[0004]

DISCLOSURE OF THE INVENTION The present invention provides a granular detergent composition which is extremely excellent in cold water solubility and is excellent in preventing discoloration and color tone change of colored clothing.

[0005]

The granular detergent composition of the present invention is characterized by containing the following components (a), (b) and (c). (A) Surfactant: 5 to 50% by weight. (B) Potassium carbonate salt: 1 to 20% by weight. (C) Amino acid or dipeptide or tripeptide or salt thereof: 0.1 to 10% by weight.

[0006]

DETAILED DESCRIPTION OF THE INVENTION

Anionic and nonionic surfactants are suitable as the component (a) surfactant, and specific examples of the anionic surfactant include the following. (1) Linear alkylbenzene sulfonate having an alkyl group having an average carbon number of 8 to 16, (2) α-olefin sulfonate having an average carbon number of 10 to 20, (3) Lower fatty acid represented by the following chemical formula 1 Alkyl ester sulfonates or fatty acid sulfonate di-salts

[0007]

[Chemical 1] (R: alkyl group or alkenyl group having 8 to 20 carbon atoms Y: alkyl group having 1 to 3 carbon atoms or counter ion Z: counter ion)

(4) Alkyl sulfate having an average carbon number of 10 to 20, (5) Having a linear or branched alkyl or alkenyl group having an average carbon number of 10 to 20, and having an average of 0.5 to 8
Alkyl ether sulphate or alkenyl ether sulphate having added moles of ethylene oxide, (6) Saturated or unsaturated fatty acid salt having an average carbon number of 10 to 20. As the counterion in the above anionic surfactant,
Usually, alkali metal salts such as sodium and potassium are suitable.

Examples of nonionic surfactants include the following. (7) Alcohol ethoxylate in which ethylene oxide is added to alcohol Among the above nonionic surfactants, carbon number is particularly 8 to 2
Suitable alcohol ethoxylates are those with an average of 10 to 30 mol, preferably 12 to 20 mol of ethylene oxide added to 2, preferably 8 to 18 saturated or unsaturated aliphatic primary or secondary alcohols, Alcohol ethoxylates obtained by adding ethylene oxide to an aliphatic primary alcohol are particularly preferable. (8) Alcohol alkoxylate obtained by adding propylene oxide and ethylene oxide in an average of 5 to 20 mol to an alcohol having an average carbon number of 10 to 20 (9) Ethylene oxide in an average of 5 to nonylphenol.
-20 mol added nonylphenol ethoxylate (10) Fatty acid alkanolamide (11) Sucrose fatty acid ester (12) Alkylamine oxide (13) Sugar fatty acid ester-based surfactant represented by the following chemical formula 2

[0010]

[Chemical 2] (R ₁ : a straight-chain or branched alkyl or alkenyl group having 5 to 17 carbon atoms R ₂ : a hydrogen atom or an alkyl group having 1 to 4 carbon atoms)

(14) Alkyl glycoside represented by the following chemical formula 3

Embedded image RO (R′O) y (Z) x (Z: a residue derived from a reducing sugar having 5 to 6 carbon atoms R: an alkyl group, an alkenyl group, an alkylphenyl group,
A hydroxyalkyl group, a hydroxyalkylphenyl group or a mixture thereof, wherein the alkyl group or the alkenyl group has 8 to 20 carbon atoms R ': an alkylene group having 2 to 4 carbon atoms y: 0-30 x: 1.0 ~ 1.42)

Examples of the sugar residue Z include monosaccharides such as glucose, galactose, xylose, mannose, lyxose and arabinose, and polysaccharides such as maltose, xylopyose, lactose and sucrose. As the nonionic surfactant, the following ester type nonionic surfactants may be used.

(15) Ester type nonionic surfactant represented by Chemical formula 4

[Chemical 4] (R₁CO: 6 to 22 carbon atoms, preferably 10 carbon atoms
18 saturated or unsaturated fatty acid residues, linear
Or branch R₂: C2-4, ethylene oxide alone
Or with ethylene oxide and propylene oxide
Mixed and added and OR₂Is preferably configured. R₃: An alkyl group having 1 to 4 carbon atoms, preferably 1 carbon atom
~ 2 alkyl group n: OR₂The average number of added moles of
More preferably n = 5-20)

The ester type nonionic surfactant of (15) above is structurally an alkyl ether of an alkylene oxide adduct of a fatty acid, and an alkylene oxide is added to an alcohol by a conventional method and then esterified with a fatty acid. Although it can also be obtained by the two-step method described above, trivalent aluminum (Al) ions, gallium (Ga) ions, indium (In) ions, thallium (Tl) ions, cobalt (Co) ions, scandium (Sc) ions, lanthanum. The fatty acid alkyl ester R ₁ COOR ₃ and the alkylene oxide are reacted in the presence of a catalyst made of magnesium oxide to which one or more metal ions selected from (La) ions and divalent manganese (Mn) ions are added. The one manufactured by the one-step method is preferable (Japanese Patent Laid-Open No. 4-27955). No. see Japanese). These anionic surfactants and nonionic surfactants may be used alone, or may be mixed and used at an appropriate ratio.

The surfactant as the component (a) is incorporated in the detergent composition in an amount of 5 to 50% by weight, preferably 15 to 40% by weight. If the blending amount is less than 5% by weight, sufficient detergency cannot be obtained, while if it exceeds 50% by weight, production becomes difficult.
When the anionic surfactant and the nonionic surfactant are used in combination as the component (a) surfactant, the anionic surfactant is 5 to 49.5% by weight (preferably 13 to 35% by weight), and the nonionic surfactant is It is desirable to add 0.5 to 30% by weight (preferably 2 to 25% by weight) of the agent.

As the potassium salt of carbonic acid as the component (b),
Potassium carbonate, potassium hydrogen carbonate, sodium potassium carbonate and the like are used. The potassium salt of carbonic acid as the component (b) has the effect of maintaining the pH of the washing liquid at the alkaline side during washing and improving the washing power, and as a solubility improver of the high bulk density granular detergent composition in cold water. Also works.
In addition, by placing the amino acid compounded as the component (c) in an alkaline environment, the adsorptivity of the amino acid to the clothing at the time of washing is increased, and the carry-in amount of the amino acid before the rinsing is increased. Have an effect. The alkali salt of carbonic acid as the component (b) is contained in the cleaning composition of the present invention in an amount of 1-2.
0% by weight, preferably 3 to 15% by weight is blended. If the content is less than 1% by weight, the solubility in cold water cannot be improved, while if it exceeds 20% by weight, the adsorption of amino acids on the fabric is hindered and the discoloration of clothing is sufficiently prevented. In addition to the above, it is not preferable because the pH of the slurry is increased during spray drying and heat is generated during kneading.

The amino acid or dipeptide or tripeptide or salt thereof (referred to as amino acids) of the component (c) is preferably an amino acid, particularly an aliphatic amino acid type, specifically, glycine, alanine, methionine, asparagine, asparagine. Amino acids such as acids, glutamine, glutamic acid, lysine and their sodium,
Salts such as potassium can be mentioned. Further, as the dipeptide or tripeptide, the above amino acid is 1
It is a compound in which 2 to 3 peptides of 3 to 3 kinds are bonded, and an amino acid, dipeptide or tripeptide containing product obtained by hydrolysis of a peptide. The amino acid as the component (c) is 0.1 to 10% by weight in the detergent composition,
Preferably 0.2 to 8% by weight is blended. If the content is less than 0.1% by weight, sufficient cold water solubility and discoloration preventing effect cannot be obtained, while if it exceeds 10% by weight, odor deterioration of the detergent composition occurs, which is not preferable. Also,
The component (c) exhibits the same effect when used in combination with sulfite.

The granular detergent composition of the present invention comprises the above (a),
In addition to the essential components of (b) and (c), other optional components can be contained. Examples of these optional components include alkali builders such as carbonates and silicates, water-insoluble or water-soluble calcium and magnesium ion-sensitive builders, enzymes such as protease, lipase, cellulase, amylase and keratinase, sodium percarbonate, and perborate. Bleaching agents such as sodium acid, anti-staining agents such as carboxymethyl cellulose and polyethylene glycol, fluorescent whitening agents, fragrances and dyes can be used.

The granular detergent composition of the present invention is prepared by making the above components into a slurry and then spray-drying to obtain a bulk density of 0.2 to
It can be obtained by using a hollow beaded detergent composition having a concentration of 0.5 g / cc, but since it has particularly excellent solubility in cold water, each component is granulated to have a bulk density of 0.6 to 1.2 g / cc
It is suitable when it is used as the high bulk density granular detergent composition.
This granulation method is described in, for example, JP-A-60-96698, in which a detergent raw material such as a surfactant is kneaded and mixed with a kneader, and crushed and granulated by a crusher such as a cutter mill type. Then, the detergent composition of the present invention is obtained by further mixing the water-insoluble fine powder. It is also possible to spray-dry a part or all of the detergent component in advance and knead and mix the spray-dried product and the remaining detergent component to produce high bulk density detergent particles. Alternatively, the spray-dried particles and, if necessary, other detergent components can be granulated with stirring to produce high-bulk-density detergent particles. Components such as enzymes and builders may be powder-blended with a granular detergent. As the stirring granulator, a high speed mixer (stirring tumbling granulator), a Henschel mixer (high speed stirring granulator), a horizontal mixer (Ledige mixer), or the like can be used.

[0020]

According to the present invention, (a) a surfactant,
(B) Alkali salt of carbonic acid and (c) Amino acid compounds are blended to form a granular detergent composition, which is extremely excellent in cold water solubility and prevents fading and color tone change of colored clothing. You can

[0021]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples, but prior to this, the evaluation methods used in the examples will be described. (1) Evaluation Method of Cold Water Solubility Water at 5 ° C. was placed in a beaker, 5 g of each cleaning composition particle was added to water, and the mixture was stirred at 1500 rpm for 8 minutes with a stirrer having a single blade of 2 × 4 cm. The dissolution residue was collected on a gauze mesh, and the dissolution residue of the detergent composition particles after drying at 105 ° C. for 1 hour was weighed to determine the dissolution residue rate S (%). (2) Evaluation method of discoloration / discoloration of colored clothing 1.5 kg of skin shirt is put in a fully automatic washing machine (Matsushita Electric Co., Aizuma F50X1) at low water level (38 liters). To this skin shirt, a 100% cotton cloth dyed in green and red, and a polo shirt manufactured by Benetton Co. (color No. 263) dyed in green were cut into 5 × 5 cm pieces and sewn to each 5 pieces. It is an index of discoloration and fading of the colored cloth after the cleaning by the ELREPHO reflectometer manufactured by KARL TWICE CO., LTD.
The E value was measured. The ΔE value is shown by the following mathematical expression 1.

[0022]

ΔE = √ [(L'-L) ² + (a'-a) ² + (b'-b) ² ] (where L ', a', b ': L, after repeated washing, a, b values L, a, b: values before washing) In addition, the evaluation of discoloration and fading was performed by using an average value of five test colored cloths.

Example 1 The components shown in Tables 1 to 5 below, excluding the enzyme, were granulated and mixed, and the enzyme was powder-mixed with this to obtain a high bulk having an average particle size of 500 μm and a bulk density of 0.9 g / cc. Density granular detergent compositions (Sample Nos. 1 to 20) were obtained. The water content of each of these detergent compositions was 7% by weight. The cold water solubility and the discoloring / fading ΔE of each cleaning composition were evaluated, and the results are shown in Tables 1, 2, and 4. The meanings and details of the abbreviations in Tables 1 to 5 are as follows. In addition, EOp shows the average addition mole number of ethylene oxide.

Component (a) (a-1) Anionic surfactant α-SF-Na: α-sulfo fatty acid (C₁₄~ C₁₆) Met
Luster sodium AOS-K: C₁₄~ C₁₈α-Olefin sulfonate potassium
Um LAS-K: linear alkyl (C_Ten~ C₁₄) Benzene
Potassium phosphonate AS-Na: Alkyl (C₁₄~ C₁₅) Sodium sulfate AES-Na: alkyl (C₁₂~ C₁₃) Ether (EO
p = 3) sodium sulfate (a-2) nonionic surfactant nonion 1: polyoxyethylene (EOp = 7) lauri
Acid methyl ester, C₁₁H_{twenty three}CO (OCH₂CH₂)₇
OCH₃  Nonion 2: Polyoxyethylene (EOp = 7) Palmi
Tin acid methyl ester, C₁₅H₃₁CO (OCH₂CH₂)
₇OCH₃ Nonion 3: Polyoxyethylene (EOp = 7) Oray
Acid methyl ester, C₁₇H₃₃CO (OCH₂CH₂)₇
OCH₃ Nonion 4: Polyoxyethylene (EOp = 12) Lau
Rylether (b) Component Carbonic acid-K: Potassium carbonate (reagent product) (d) Optional component Carbonic acid-Na: Sodium carbonate (reagent product) Zeolite: A-type synthetic zeolite Sulfurous acid-Na: Sodium sulfite (reagent product) Fluorescent agent 1: 4,4-bis (2-sulfostyryl) biphe
Nil disodium (Tinopearl CBS) fluorescent agent 2: 4,4-bis [(4-toluidino-6-mono
Holino-1,3,5-triazin-2yl) amino] su
Tilbene-2,2-disulfonic acid disodium salt (why
Tex SKC) Protease: Sabinase 6.0T (Novo) Lipase: Lipolase 100T (Novo) Cellulase: Cellzyme 2400 (Novo)

[0025]

[Table 1] Practical example Sample No. 1 2 3 4 5 6 7 8 Composition (wt%) α-SF-Na 20 2 20 20 3 15 15 20 AOS-K − 5 − − − − 5 − − LAS-K − 20 − − 5 − 5 − AS-Na − − − − − − 1 − AES-Na − − − − − 1 − − Nonion 1 5 − − − − 5 5 5 Nonion 2 − 5 − − − − − − Nonion 3 − − 5 − − − − − Nonion 4 − − − 5 20 − − − Carbonic acid-K 10 10 10 10 10 10 10 15 Glycine 5 5 5 5 5 5 5 5 5 L-Glutamic acid Na − − − − − − − − Β-Alanine − − − − − − − − L-Aspartic acid Na − − − − − − − − L-Lysine − − − − − − − − DL-Methionine − − − − − − − − Glycine alanine − − − − − − − − Glutathione − − − − − − − − Common component 1 (as shown in Table 3) Balance evaluation: ΔE 0.8 0.8 1.0 1.0 1.0 0.8 0.8 0.6 Solubility S (%) 0 1 0 0 0 0 0 0

[0026]

[Table 2] Example ratio Comparative sample No. 9 10 11 12 13 14 15 16 17 18 Composition (wt%) α-SF-Na 20 20 20 20 20 20 20 20 20 20 AOS-K − − − − − − − − − − LAS-K − − − − − − − − − − AS-Na − − − − − − − − − − AES-Na − − − − − − − − − − Nonion 1 5 5 5 5 5 5 5 5 5 5 Nonion 2 − − − − − − − − − − Nonion 3 − − − − − − − − − − Nonion 4 − − − − − − − − − − Carbonic acid-K 15 15 15 15 15 15 15 15 25 25 Glycine − − − − − 2 − − 5 0.02 L-Glutamic acid Na 5 − − − − 2 − − − − β-Alanine − 5 − − − − − − − − L-Aspartic acid Na − − 5 − − − − − − − L-lysine − − − 5 − − − − − − DL-methionine − − − − 5 1 − − − − glycine alanine − − − − − − 5 − − − glutathione − − − − − − − 5 − Common components 1 (as shown in Table 3) bus run-scan rating: ΔE 0.4 0.8 1.2 1.0 0.8 0.6 1.0 1.2 2.1 5.3 Solubility S (%) 1 0 0 0 0 0 1 1 8 20

[0027]

[Table 3] Composition of common component 1 Carbonate-Na 10% by weight Zeolite 25% by weight Sulfurous acid-Na 0.2% by weight Fluorescent agent 1 0.2% by weight Fluorescent agent 2 0.1% by weight Protease 0.5% by weight Lipase 0.5% by weight Cellulase 0.5% by weight Sulfuric acid Sodium balance

[0028]

[Table 4]

[0029]

[Table 5] Composition of common component 2 Carbonate-Na 10% by weight Zeolite 25% by weight Fluorescent agent 1 0.2% by weight Fluorescent agent 2 0.1% by weight Protease 0.5% by weight Lipase 0.5% by weight Cellulase 0.5% by weight Sodium sulfate balance

Claims (1)

[Claims] 1. (a) Surfactant: 5 to 50% by weight (b) Potassium salt of carbonic acid: 1 to 20% by weight (c) Amino acid or dipeptide or tripeptide or salt thereof: 0.1 to 10% by weight %, And a granular detergent composition containing 100% by weight.