JP2002256299A - Liquid detergent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thickened liquid detergent composition that has excellent detergency, foaming properties and low-temperature stability and is mainly useful for hard surface ware in a kitchen. SOLUTION: The objective liquid detergent composition includes surfactant in a range of 30-60 mass % and comprises (a) 10-35 mass % of anionic surfactant, (b) 1-15 mass % of amine oxide surfactant. The viscosity of the undiluted solution is characteristically 200-600 mPa.s at 25 deg.C, the product viscosity diluted to 50 mass % with water is less than the double of the undiluted solution, and the product viscosity diluted to 25 mass % with water does not exceed that of the undiluted solution.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid detergent composition useful mainly for hard surfaces of kitchens and the like. The present invention relates to a thickening liquid detergent composition.

[0002]

2. Description of the Related Art In recent years, thickening types have become widespread in various liquid detergent markets. The thickened liquid detergent has a high-class feel, has little dripping from the container, and is easy to adjust the amount of use, and therefore has excellent handling properties. However, when a high-viscosity liquid detergent is diluted with water, the product viscosity generally increases in many cases, and the usability tends to be inferior. This is due to the synergistic effect of several types of surfactants such as anionic surfactants, amphoteric surfactants, and nonionic surfactants, which are mixed in large amounts to form a liquid crystal phase when diluted with water. Was desired. Furthermore,
It has been extremely difficult for a high-viscosity liquid detergent to sufficiently satisfy the basic performance as a liquid detergent such as detergency, foaming, and low-temperature stability.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and aims to solve the problem.
An object of the present invention is to provide a thickening liquid detergent composition having excellent detergency, foaming, low-temperature stability, and excellent usability.

[0004]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, have found that 3
In a liquid detergent composition containing 0 to 60% by mass, a specific amount of an anionic surfactant and an amine oxide type surfactant is contained, and the viscosity of a stock solution and the viscosity of a product obtained by diluting the same are specified in a specific range. It has been found that the above-mentioned liquid detergent composition can be obtained by adjusting the liquid crystal composition, and the present invention has been completed. That is, according to the present invention, there is provided a liquid detergent composition containing a surfactant in a range of 30 to 60% by mass, and the liquid detergent composition comprises (a) an anionic surfactant 10 to 10% by mass. 35% by mass, (b) 1 to 15% by mass of an amine oxide type surfactant, the viscosity of the stock solution at 25 ° C is 200 to 600 mPa · s, and the product viscosity when diluted with water to 50% by mass is the stock solution. Provided is a liquid detergent composition characterized in that the product viscosity when diluted to not more than twice the viscosity and 25% by mass with water does not exceed the viscosity of the stock solution.

[0005]

Embodiments of the present invention will be described below in detail. Examples of the anionic surfactant used as the component (a) of the present invention include polyoxyethylene alkyl sulfate, alkylbenzene sulfonate,
Alkyl sulfate, α-olefin sulfonate, alkyl ether carboxylate, alkane sulfonate, α sulfo fatty acid salt, soap, amide ether carboxylate, sulfosuccinate, amino acid-based anionic surfactants and the like, These can be used alone or as a mixture. The compounding amount of the anionic surfactant is 10 to 35% by mass, preferably 15 to 30% by mass of the total amount of the liquid detergent composition. If the amount is less than 10%, the cleaning power is poor,
On the other hand, if it exceeds 35% by mass, the stability at low temperatures is poor.

Examples of the amine oxide type surfactant used as the component (b) of the present invention include alkyldimethylamine oxide and alkylamidopropyldimethylamine oxide. Amine oxide type surfactants are important factors for improving detergency by synergistic effects with anionic surfactants, and lauryl dimethylamine oxide is particularly preferred for this purpose. The mixing ratio of the anionic surfactant to the amine oxide surfactant is preferably in the range of 10/1 to 1/1. The compounding amount of the amine oxide type surfactant is 1 to 15% by mass, preferably 1 to 8% by mass, and most preferably 3 to 5% by mass based on the total amount of the liquid detergent composition. If the amount is less than 1% by mass, the detergency is poor, and if it exceeds 15% by mass, the stability at low temperatures is inferior.

It is preferred that the liquid detergent composition of the present invention further comprises (c) a nonionic surfactant as a diluting viscosity reducing agent. As the nonionic surfactant,
For example, alcohol ethoxylate, fatty acid alkanolamide, polyoxyethylene alkyl ether, sorbitan fatty acid ester, polyoxyethylene acyl ester, alkyl polyglycoside, fatty acid glycoside ester, fatty acid methyl glycoside ester, alkyl methyl glucamide and the like can be mentioned. Preferred nonionic surfactants include nonionic surfactants having an HLB of 12 or more. Among them, alcohol ethoxylate is preferable. Alcohol ethoxylate is an ethylene oxide adduct of a higher alcohol, and is not particularly limited by its structure or production method, and has an alkyl hydrophobic group having 8 to 18 carbon atoms and an average degree of polymerization of a hydrophilic oxyethylene group. Is preferably 1 to 50. More preferably, the number of carbon atoms of the hydrophobic group is preferably 10 to 14, and the average degree of polymerization of the oxyethylene group is preferably 12 or more. Specifically, polyoxyethylene (12) lauryl ether,
Polyoxyethylene (12) decyl ether, polyoxyethylene (15) lauryl ether, polyoxyethylene (15) myristyl ether, polyoxyethylene (20) lauryl ether, polyoxyethylene (2
0) myristyl ether, polyoxyethylene (30)
Lauryl ether and the like can be mentioned, and they can be used alone or as a mixture. Among them, polyoxyethylene (12) lauryl ether (HLB13) is preferred in terms of maintaining stable foaming in a dilution process when a detergent is used.
Is preferable, and polyoxyethylene (15) lauryl ether (HLB14) is particularly preferable. HLB is 12
The above alkyl polyglucosides are also desirable, for example, C1
0-12 alkyl polyglucoside: degree of polymerization n = 1.2
(HLB15) and C12-14 alkyl polyglucoside: polymerization degree n = 1.4 (HLB14).

In addition to the nonionic surfactant having an HLB of 12 or more, HLB is further added to improve the texture of foam.
Preferably, less than 12 nonionic surfactants are used in combination. As the nonionic surfactant having an HLB of less than 12, a higher fatty acid mono- and / or diethanolamide is preferred. The higher fatty acid diethanolamide is not particularly limited by its structure or production method, but preferably has 8 to 18 carbon atoms, more preferably 10 to 14 carbon atoms in the fatty acid residue. Specifically, decanoic acid monoethanolamide, decanoic acid diethanolamide, lauric acid monoethanolamide, lauric acid diethanolamide, myristic acid monoethanolamide, myristic acid diethanolamide, coconut fatty acid monoethanolamide, coconut fatty acid diethanolamide, etc. And these can be used alone or in combination. Among these, lauric acid diethanolamide and coconut fatty acid diethanolamide (all HLB11) are most preferred. The nonionic surfactant is used in an amount of 1 to 20 in the total amount of the liquid detergent composition.
It is preferable to mix by weight%. When a nonionic surfactant having an HLB of 12 or more is blended, the amount is 3 to 10% by mass, preferably 5 to 9% by mass of the total amount of the liquid detergent composition. When the amount is less than 3% by mass, foaming is inferior, and
If it exceeds 10% by mass, the detergency decreases. Also, HLB
When less than 12 nonionic surfactants are blended, 1 to 8% by mass of the total amount of the liquid detergent composition, preferably 2 to 5% by mass.
% By mass. If the amount is less than 1% by mass, the foam quality is inferior. If the amount exceeds 8% by mass, the effect remains unchanged and it is not economical.

The liquid detergent composition of the present invention may further contain a betaine-type amphoteric surfactant as the component (d). Examples of the betaine-type amphoteric surfactant include alkyl betaine, alkyl hydroxysulfo betaine, alkyl amide betaine, imidazolinium betaine, and N-alkyl amino acid. Among them, laurylamidopropylbetaine is particularly preferable because it has a high effect of improving the cleaning performance in addition to the thickening effect of the system. The content of the betaine-type amphoteric surfactant is 1 to 8% by mass, preferably 2 to 5% by mass based on the total amount of the liquid detergent composition. If the amount is less than 1% by mass, it is difficult to increase the viscosity of the product to 200 mPa · s or more.
If the amount is more than mass%, foaming is reduced.

The liquid detergent composition of the present invention may further contain an organic polymer as the component (e). As the organic polymer, for example, a molecular weight of 10 to 1,
1,000,000 polycarboxylic acid polymer, molecular weight 1
000-10,000 polyamino acids, molecular weight 100
And 10,000 polyalkylene glycols and natural organic high molecular compounds. Specifically, homopolymers such as polyacrylic acid and polymethacrylic acid, ethyl acrylate, methyl acrylate, butyl acrylate, ethyl methacrylate, methyl methacrylate, butyl methacrylate, acrylic acid, methacrylic acid, polyethylene glycol alkyl ether acrylate, polyethylene glycol alkyl Ether methacrylate
Copolymers synthesized from acrylic acid monomers such as maleic acid, polylysine, polyethylene glycol (10
00), polypropylene glycol, xanthan gum and the like. Among them, a polyacrylic acid-based polymer having a molecular weight of about 500,000 is most preferable in terms of improving foam quality in addition to stability of product viscosity. (F) The compounding amount of the organic polymer is 0.0001 of the total amount of the liquid detergent composition.
-5 mass%, preferably 0.0005-4 mass%. If the compounding amount is less than 0.0001% by mass, no effect can be expected, and if it exceeds 5% by mass, handling properties are inferior, such as generation of yarn (stringiness).

The stock solution viscosity at 25 ° C. of the liquid detergent composition of the present invention is from 200 to 600 mP from the viewpoint of usability.
a · s, preferably 300 to 500 mPa ·
adjusted to s. When the viscosity is less than 200 mPa · s, the handleability is poor such as a problem of sagging.
If it is larger than 00 mPa · s, it is not preferable because it causes a problem of difficulty in dispensing during use.

Further, the liquid detergent composition of the present invention can be treated with water for 50 hours.
It is necessary that the product viscosity when diluted to mass% is not more than twice the viscosity of the stock solution, and that the product viscosity when diluted to 25 mass% with water does not exceed the stock viscosity. If the product viscosity when diluted to 50% by mass with water is more than twice the viscosity of the stock solution, it is not preferable in terms of foaming. The product viscosity when diluted to 50% by mass with water is preferably 1.5 times or less, and most preferably 1 time or less, the viscosity of the stock solution. Further, when the product viscosity when diluted to 25% by mass with water is higher than the stock solution viscosity, it is not preferable in terms of foaming. The product viscosity when diluted to 25% by mass with water is preferably 0.75 times or less, and most preferably 0.5 times or less, the viscosity of the stock solution.

[0013] The liquid detergent composition of the present invention may be blended with other additives which have been conventionally used in any combination as long as the effects of the present invention are not impaired. For example, as other preferably compoundable additives, glycolic acid, citric acid, metal chelating agents such as EDTA, inorganic salts such as magnesium salts and calcium salts, aromatic carboxylic acids,
Hydrotropes such as aromatic sulfonic acids, liquid solvents such as lower alcohols and propylene glycol, antioxidants such as BHT and ascorbic acid, preservatives such as benzoic acid (salt), bactericides such as zinc sulfate, and natural polysaccharides And viscosity-controlling agents such as minerals, coloring agents, anti-inflammatory agents, plant extracts, medicinal ingredients such as enzymes, and commonly used substances such as fragrances.
Water is usually used as a solvent.

Examples of the fragrance include hydrocarbons such as aliphatic hydrocarbons, terpene hydrocarbons and aromatic hydrocarbons, alcohols such as aliphatic alcohols, terpene alcohols and aromatic alcohols, aliphatic ethers and aromatic ethers. Oxides such as ethers, aliphatic oxides and terpenes, aldehydes such as aliphatic aldehydes, terpene aldehydes, aliphatic cyclic aldehydes, thioaldehydes and aromatic aldehydes, aliphatic ketones, terpene ketones, and aliphatic cyclics Ketones, non-benzene-based aromatic ketones, ketones such as aromatic ketones, acetals, ketals, phenols, phenol ethers, fatty acids,
Terpene carboxylic acids, aliphatic cyclic carboxylic acids, acids such as aromatic carboxylic acids, acid amides, aliphatic lactones,
Lactones such as macrocyclic lactone, terpene lactone, aliphatic cyclic lactone, aromatic lactone, aliphatic ester, furan carboxylic acid ester, aliphatic cyclic carboxylic acid ester, cyclohexyl carboxylic acid ester, terpene carboxylic acid ester, aromatic Esters such as aromatic carboxylic acid esters, nitro musks, nitriles, amines,
Mix and use one or more of synthetic fragrances such as pyridines, quinolines, pyrroles, indole and other nitrogen-containing compounds and natural fragrances from animals and plants, and compounded fragrances including natural fragrances and / or synthetic fragrances can do. For example, as synthetic fragrance, "Synthetic fragrance chemistry and product knowledge", written by Motoichi Indo, published by Kagaku Kogyo Nippo, 1996, M.
ONTCLAIR, N.M. J. Perfume and Flavor Chemicals by Stefan Arctander, published by Perfu
me and Flavor Chemicals) "
Etc. can be used. As the natural fragrance, the fragrance described in “Encyclopedia of Fragrance” edited by the Japan Fragrance Association can be used.

Principal names of fragrances include, specifically, aldehydes C6 to C12, anisaldehyde, acetal R, acetophenone, acetylsedrene, adoxal, allyl amyl glycolate, allyl cyclohexanepropionate, α-damascon, β- Damascon, δ-damascon, ambroxane, amyl cinnamic aldehyde, amyl cinamic aldehyde dimethyl acetal, amyl valerinate, amyl salicylate, isoamyl acetate, isoamyl salicylate, ouranthiol, acetyl eugenol, vacdanol, benzyl acetate, benzyl alcohol, benzyl salicylate , Bergamyl acetate, bornyl acetate, butyl butyrate, pt-butylcyclohexanol, pt-butyl cycle Hexyl acetate, o-
t-butylcyclohexanol, tert-butylcyclohexyl acetate, benzaldehyde, benzylformate, caryophyllene, cashmeren, carvone,
Cedroambar, Cedrol Acetate, Cedrol, Celestride, Cinnamic Alcohol, Cinnamic Aldehyde, Cisjasmon, Citral, Citral Dimethyl Acetal, Citrasal, Citronellal,
Citronellol, citronellyl acetate, citronellyl formate, citronellyl nitrile, cyclaset, cyclamenaldehyde, cyclaprop, caron, coumarin, cinnamyl acetate, δ-C6-C1
3 lactone, dimethylbenzyl carbinol, dihydrojasmon, dihydrolinalool, dihydromyrcenol, dimethol, dimyrcetol, diphenyl oxide, ethyl wanilin, eugenol, fluitate, fentyl alcohol, phenylethyl phenyl acetate, galaxolide, γ-C6-C13 lactone, α-pinene, β-pinene, limonene, myrcene, β-caryophyllene, geraniol, geranyl acetate, geranyl formate, geranyl nitrile, hedion, helional, heliotropin, cis-3-hexenol,
cis-3-hexenyl acetate, cis-3-hexenyl salicylate, hexylcinamic aldehyde, hexyl salicylate, hyacinth dimethyl acetal, hydrotropic alcohol, hydroxycitronellal, indole, ionone, isobornyl acetate, isocyclo Citral, IsoE Super, Isoeugenol, Isononyl Acetate, Isobutylquinoline, Jasmar, Jasmolactone, Jasmophylan, Koabon, Rigstral, Lilial, Lime Oxide, Linalool, Linalool Oxide, Linalyl Acetate, Lilal, Manzanate, Mayol, Mensa Neil acetate, mensonate, methyl anthranilate, methyl eugenol, menthol, α
-Methylionone, β-methylionone, γ-methylionone, methylisoeugenol, methyl lavender ketone, methyl salicylate, muguealdehyde, mugol, musk TM-II, musk 781, musk C1
4. Muscon, cibetone, cyclopentadecanone, cyclohexadecenone, cyclopentadecanolide, ambridolide, cyclohexadecanolide, 10-oxahexadecanolide, 11-oxahexadecanolide, 12-
Oxahexadecanolide, ethylene brassate, ethylene dodecandioate, oxahexadecen-2-one, 14-methyl-hexadecenolide, 14-methyl-
Hexadecanolide, musk ketone, musk tibetin, nopyr alcohol, nopyr acetate, neryl acetate, nerol, methylphenyl acetate, mirac aldehyde, neobergamate, oakmoss 1. Oribbon, oxyphenylone, p-cresyl methyl ether, pentalid, phenylethyl alcohol, phenylethyl acetate, rubafuran, damacenone, raspberry ketone, dimethylbenzylcarbinyl acetate, jasmacyclene, methylnaphthyl ketone, rosephenone, rose oxide , Sandalore, Sandella, Santarex, Styrilyl acetate, Styrilyl propionate, Terpineol, Terpinyl acetate, Tetrahydrolinalool, Tetrahydrolinalyl acetate, Tetrahydrogeraniol, Tetrahydrogeranyl acetate, Tonarid, Traseolide, Tripral, Thymol, Waani , Berdox, yarayara, anise oil, bay oil, boad rose oil, cananga oil, cardamo Oil, cassia oil, cedarwood oil,
Orange oil, Mandarin oil, Tangerine oil, Basil oil, Nutmeg oil, Citronella oil, Clove oil, Coriander oil, Elemi oil, Eucalyptus oil, Fennel oil, Galvanum oil, Geranium oil, Hiba oil, Hinoki oil, Jasmine oil,
Lavandin oil, lavender oil, lemon oil, lemongrass oil, lime oil, neroli oil, oak moss oil, okotia oil,
Patchouli oil, peppermint oil, perilla oil, petitgren oil, pine oil, rose oil, rosemary oil, camphor oil, fragrance oil, clary sage oil, sandalwood oil, spearmint oil, spike lavender oil, star anise oil, thyme oil, tonka Bean tincture, turpentine oil, crocodile bean tincture, vetiver oil, ylang-ylang oil, grapefruit oil, citron oil, benzoin, peruvian balsam, true balsam, tuberose oil, musk tincture, castorium tincture, civet tincture, ambergris tincture and the like.

As a solvent or a retaining agent for the fragrance, diethyl phthalate, dipropylene glycol, benzyl benzoate, isopropyl myristate, hercoline, isopentane, orange terpene and the like can be used.

Since the liquid detergent composition of the present invention is appropriately thickened, it is necessary to devise a container for filling the liquid detergent composition. The present inventors have studied the ease of pouring a liquid from a container, and found that the diameter of the spout is 2.5 to
A plastic container having a thickness of 4.0 mm, the center of the body of the container being processed to be thin, that is, a plastic container having a structure in which the thickness of the body of the container gradually decreases from the upper and lower portions to the center. It was found that it was excellent in usability. . The material of the plastic container is P
ET, PP and PE. If the diameter of the spout is less than 2.5 mm, it will be difficult to smoothly pour out the liquid, and if it exceeds 4.0 mm, the pouring will be excessive. Further, if the thickness of the body of the container body is thick at all portions, the liquid is not smoothly poured out when pressed by hand, which is not preferable. Conversely, it is preferable that the central portion of the container main body is processed into a thin shape because the liquid is smoothly poured out when pressed by hand. As the thickness of the container body, the thickness of the upper and lower thickest parts is 300 to 700 μm,
The thickness is preferably 300 to 450 μm, and the thinnest central portion has a thickness of 30 to 300 μm, preferably 150 to 280 μm.
It is desirable that Further, a shielding wall surrounding the spout opening is provided so as to extend to the inner surface of the spout or close to the spout opening, on the inner side of the cap attached to the mouth of the container body, at the periphery of the opening of the spout. Is preferable from the viewpoint of preventing sagging. As the shielding wall, one having a lower end inclined is more preferable, and that described in JP-A-11-70962 can be suitably used.

[0018]

Next, the present invention will be described in more detail with reference to Examples and Comparative Examples. Note that the present invention is not limited to these examples. <Examples 1 to 7, Comparative Examples 1 to 5> Various liquid detergent compositions were prepared and evaluated for detergency, foaming, and low-temperature stability by the following test methods. Table 1 shows the results.
In addition, the compounding quantity in a table | surface is a mass%, and the composition adjusted pH to 6.7.

(Evaluation of detergency) 1 g of beef tallow was 10 cm × 1
The solution was evenly applied to a 5 cm tapper container to obtain severely soiled hydrophobic surface soil. 11.5cm × 7.5cm
38 g of water and 2 g of the detergent composition were placed in a × 3 cm dishwashing sponge, rubbed by hand several times, and the contaminated tapper container was washed at 25 ° C. in the same manner as usual at home. After washing, the well was rinsed with water, and the cleaning power was evaluated based on the following criteria by the tactile sensation when the contaminated surface of the tapper container at that time was touched by hand. Evaluation criteria: ：: Touching any part of the tapper container produces a squeaky and squeaky sensation, and no lubricity due to residual oil is felt. Δ: There is a feeling of friction when the smooth surface of the tapper container is touched, and no oil remains, but slight lubricity remains at the edges and corners. ×: The entire tapper container is felt slimy, and it is apparent that oil remains.

(Evaluation of foaming) 11.5 cm × 7.5 c
38 g of water and 2 g of the detergent composition are placed in an mx 3 cm dishwashing sponge, and the manner of foaming after rubbing by hand several times is determined according to the following criteria. Evaluation criteria: ：: Good foam quality and rich foam are formed △: Bubble is slightly formed ×: Bubble is hardly formed

(Evaluation of low-temperature stability) 100 ml of the composition
, And stored in a constant temperature bath at -20 ° C for 1 day, frozen, then stored in a constant temperature bath at 0 ° C for 1 day, thawed and restored, and repeated three times. It was determined according to Evaluation criteria: ○: Uniformly transparent ×: Cloudy or precipitated

[0022]

[Table 1]

The following composition was used as the fragrance compounded. (Parts by mass)

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Claims (8)

[Claims] 1. A liquid detergent composition containing a surfactant in the range of 30 to 60% by mass, wherein the liquid detergent composition comprises (a) 10 to 35% by mass of an anionic surfactant. , (B) 1 to 15% by mass of an amine oxide surfactant
And the stock solution viscosity at 25 ° C. is 200 to 600 m
Pa · s, the product viscosity when diluted to 50% by mass with water is not more than twice the viscosity of the stock solution, and the product viscosity when diluted to 25% by mass with water does not exceed the stock solution viscosity. Liquid detergent composition. 2. The liquid detergent composition according to claim 1, wherein the viscosity of the product when diluted to 50% by mass with water is 1.5 times or less the viscosity of the stock solution. 3. The liquid detergent composition according to claim 1, wherein the viscosity of the product when diluted to 50% by mass with water is 1 time or less of the viscosity of the stock solution. 4. The liquid detergent composition according to claim 1, wherein the viscosity of the product when diluted to 25% by mass with water is 0.75 times or less the viscosity of the stock solution. 5. The liquid detergent composition according to claim 1, wherein the viscosity of the product when diluted to 25% by mass with water is 0.5 times or less the viscosity of the stock solution. 6. The nonionic surfactant (c)
The liquid detergent composition according to any one of claims 1 to 5, comprising 20% by mass. 7. Further, (d) 1 to 8% by mass of a betaine-type amphoteric surfactant and / or (e) 0.00 of an organic polymer.
The liquid detergent composition according to any one of claims 1 to 6, which contains from 01 to 5% by mass. 8. The liquid detergent composition according to claim 1, wherein the diameter of the spout is 2.5 to 4.0 mm.
A liquid detergent composition characterized in that a center portion of a container body is filled in a plastic container processed into a thin shape.