JP5520029B2 - Liquid detergent composition - Google Patents

Description

  The present invention relates to a liquid detergent composition.

  In general, a cleaning composition for a hard surface has an aromatic sulfonic acid or a salt thereof or an aromatic carboxylic acid or a salt thereof for the purpose of improving the storage stability and foamability of the composition and increasing the liquid viscosity of the composition. Has been used.

  For example, Patent Documents 1 and 2 disclose that p-toluenesulfonic acid is a hydrotrope for the purpose of improving the phase stability of a composition containing a specific anionic surfactant containing a polyoxyalkylene alkyl sulfate and an amine oxide. It is described to be used as. Patent Documents 3 and 4 describe cumene sulfonic acid, xylene sulfonic acid, toluene sulfonic acid, and alkalis thereof for the purpose of improving foamability during trigger spray spraying and improving storage stability of sodium hypochlorite at high temperatures. The use of metal salts is described. Patent Documents 5, 6, and 7 disclose aromatic sulfonic acids such as sodium xylene sulfonate and sodium cumene sulfonate as thickeners for compositions intended to improve the residence time when applied to a non-horizontal surface. Or the use of the salt is described. Patent Document 8 describes a technique of blending an amide type amine oxide and a specific anionic polymer.

  On the other hand, from the viewpoint of low environmental load and low skin irritation, a detergent composition having a low surfactant concentration or a low water consumption is desired. However, when the surfactant concentration is reduced, the cleaning performance is also lowered, and in order to reduce the amount of water used, it is necessary to further reduce the surfactant. For this reason, since it becomes difficult to achieve the original purpose of the cleaning composition, there has been a demand for a cleaning composition having sufficient cleaning performance even at a low surfactant concentration and having a low amount of water used.

JP 2009-155611 A JP 2009-185252 A JP 2002-212596 A JP 2002-241791 A JP 2008-260799 A JP 62-30199 A JP-A 63-90600 JP-A-10-176187

  An object of the present invention is to provide a liquid detergent composition that exhibits high detergency even when the surfactant concentration is reduced and has good rinsing properties.

  The present invention comprises (a) an amine oxide type surfactant having a hydrocarbon group having 8 to 18 carbon atoms (hereinafter referred to as component (a)), (b) benzoic acid, benzenesulfonic acid, benzenedisulfonic acid, p- Contains one or more compounds selected from toluenesulfonic acid, cinnamic acid and salts thereof, preferably alkali metal salts [hereinafter referred to as component (b)], and (c) water [hereinafter referred to as component (c)] And the molar ratio of the component (a) to the component (b) is (b) / (a) = 0.3 to 0.9, and the anionic surfactant and the cationic interface with respect to the component (a) The present invention relates to a liquid detergent composition having a total amount of activator of 3 mol% or less and substantially free of hypochlorite.

  The inventors of the present invention can combine a specific amine sulfonate with a specific aromatic sulfonic acid or a salt thereof and / or a specific aromatic carboxylic acid or a salt thereof at a specific molar ratio, so that a low surfactant concentration is sufficient. The present inventors have found that a good cleaning performance is exhibited and at the same time the amount of water used is reduced (the rinsing performance is improved), leading to the present invention.

  ADVANTAGE OF THE INVENTION According to this invention, even if it reduces surfactant density | concentration, the liquid cleaning composition which exhibits high detergency and has favorable rinse property is provided.

<(A) component>
The component (a) of the present invention is an amine oxide type surfactant having a hydrocarbon group having 10 to 18 carbon atoms, and a compound of the following general formula (A) is preferable.

[Wherein, R ¹ is an alkyl group or alkenyl group having 8 to 18 carbon atoms, R ² is an alkylene group having 1 to 6 carbon atoms, and A is —COO—, —CONH—, —OCO—, — It is a group selected from NHCO-. a is a number of 0 or 1, and R ³ and R ⁴ are each an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group. ]

In the general formula (A), R ¹ is preferably an alkyl group or alkenyl group having 10 to 16 carbon atoms, more preferably 10 to 14 carbon atoms, and particularly preferably a lauryl group and / or a myristyl group. Depending on the structure of the general formula (A), R ¹ may be a residue of a fatty acid such as lauric acid or myristic acid. When A is present, it is preferably —COO— or —CONH—. R ² is preferably a number of 2 or 3, and R ³ and R ⁴ are each preferably a methyl group. a is preferably 0 from the viewpoint of detergency.

R ^{1 in the} general formula (A) may be a single alkyl chain length or alkenyl chain length, or a mixed alkyl group or alkenyl group having different alkyl chain lengths or alkenyl chain lengths. In the latter case, those having a mixed alkyl chain length or alkenyl chain length derived from a vegetable oil selected from coconut oil and palm kernel oil are preferred. Specifically, the cleaning effect is that the molar ratio of lauryl group / myristyl group (or lauric acid residue / myristic acid residue) is 95 / 5-20 / 80, preferably 90 / 10-30 / 70, And it is preferable from the viewpoint of rinsing properties.

<(B) component>
The component (b) of the present invention is one or more compounds selected from benzoic acid, benzenesulfonic acid, benzenedisulfonic acid, p-toluenesulfonic acid, cinnamic acid, and salts thereof. Examples of the salt include alkali metal salts such as sodium salt and potassium salt, alkaline earth metals such as magnesium and calcium, and alkali metal salts are preferable. The component (b) is preferably one or more compounds selected from benzoic acid, benzenesulfonic acid, benzenedisulfonic acid, cinnamic acid, and alkali metal salts thereof from the viewpoint of detergency.

<(C) component>
As the water of component (c), distilled water or ion exchange water is preferably used. Usually, the balance of the liquid detergent composition of the present invention is water (c).

<Liquid cleaning composition>
In the liquid detergent composition of the present invention, the molar ratio of the component (a) to the component (b) is (b) / (a) = 0.3 to 0.9, preferably 0.35 to 0.00. 85, and most preferably 0.4 to 0.8. Within this range, even if the surfactant concentration is reduced, excellent detergency is exhibited and excellent rinsing properties are obtained.

  In the liquid detergent composition of the present invention, from the viewpoint of detergency, the total amount of the anionic surfactant and the cationic surfactant is 3 mol% or less with respect to the component (a), preferably It is 2 mol% or less, particularly preferably 1 mol% or less. The lower limit is preferably 0 mol%.

  Furthermore, in the liquid detergent composition of the present invention, from the viewpoint of detergency, the nonionic surfactant excluding the component (a) is 5 mol% or less, preferably 2 mol, with respect to the component (a). % Or less. The lower limit is preferably 0 mol%.

  Moreover, the liquid detergent composition of this invention does not contain hypochlorite substantially from a viewpoint of a storage stability improvement.

  The liquid detergent composition of the present invention preferably contains 1 to 30% by mass, further 5 to 20% by mass, and more preferably 10 to 15% by mass of the component (a) from the viewpoint of rinsing properties.

  Moreover, it is preferable that the liquid cleaning composition of this invention contains (b) component 1-20 mass%, 4-15 mass%, Furthermore, 7-10 mass%.

  In the liquid detergent composition of the present invention, the proportion of the component (a) in the surfactant is preferably 70 to 100% by mass, more preferably 80 to 100% by mass, and still more preferably 95 to 100% by mass.

  In the liquid detergent composition of the present invention, the total content of surfactants is preferably 1 to 30% by mass, more preferably 5 to 25% by mass, and even more preferably 10 to 20% by mass.

  In the liquid detergent composition of the present invention, components such as additives, preservatives, various colorants, inorganic salts, and fragrances are blended in a normal liquid detergent composition as long as the target performance is not impaired. Can be blended.

  The liquid detergent composition of the present invention can be used for washing various hard surfaces such as tableware, cooking utensils, kitchens, walls, tables, bathrooms, and various glass products, but is suitable as a liquid detergent composition for dishware. .

  The pH of the liquid detergent composition of the present invention can be adjusted to 6 to 9, more preferably 6.5 to 8 at 20 ° C. When using for tableware, pH is 6-9 at 20 degreeC, Furthermore, 6.5-7.5 are preferable.

<Detergency test>
Rapeseed oil (manufactured by Sankei Sangyo Co., Ltd.) is mixed with 0.1% by weight of Sudan III (manufactured by Tokyo Chemical Industry Co., Ltd.) as a model oil. The product that was spread evenly on the product was made into a model-contaminated tableware.

  A commercially available new sponge (115 mm × 75 mm × 35 mm, trade name: Kikuron, distributor: Kikuron Co., Ltd.) is rinsed with tap water, squeezed until the tap water content is 10 g, and then the liquid cleaning shown in Table 1 1 g of the agent composition and 20 ml of tap water were impregnated. After the sponge has been bubbled on the model contaminated tableware 2 to 3 times by hand, the model contaminated tableware can be rubbed continuously and washed (confirmed by the disappearance of the color attached to the tableware and the touch with the null) The number of dishes was determined.

<Rinseability test>
40 ml of the composition of Table 1 diluted with 3.5 ° DH hard water (25 ° C.) was added to a 500 ml round separatory funnel (IWAKI) so that the surfactant concentration was 0.1% by mass. The foam was bubbled by shaking vigorously 30 times up and down. After letting it stand on the funnel stand, the cock was opened to drain the aqueous solution and bubbles, and the cock was closed when the falling droplet interval was about 1 second. 40 ml of 3.5 ° DH hard water whose temperature was adjusted to 25 ° C. was slowly poured from the upper port, and the separator funnel body was gently precessed by 10 rotations while holding the long-axis tube portion on the discharge port side. After letting it stand on the funnel stand, the cock was opened again and the same draining operation was performed. The number of times of addition of 3.5 ° DH hard water required until the bubbles in the separatory funnel disappeared and the drained liquid became only water was defined as the number of rinses.

The components in the table are as follows.
(A-1): dodecyldimethylamine oxide (a-2): tetradecyldimethylamine oxide (b-1): sodium benzoate (b-2): sodium benzenesulfonate (b-3): sodium benzenedisulfonate (B-4): Sodium cinnamate ES: the alkyl chain is an alkyl group having 12 carbon atoms: an alkyl group having 14 carbon atoms = 0.4 mol of propylene oxide in 1 mol of natural alcohol of 73:27 (mass ratio). Addition, 1.5 mol of ethylene oxide added, then sulfated with sulfur trioxide and neutralized with sodium hydroxide.

Claims (6)

(A) Amine oxide type surfactant having a hydrocarbon group having 8 to 18 carbon atoms, (b) selected from benzoic acid, benzenesulfonic acid, benzenedisulfonic acid, p-toluenesulfonic acid, cinnamic acid and salts thereof One or more compounds, and (c) water, the molar ratio of (a) and (b) being (b) / (a) = 0.3-0.9, relative to (a) The total amount of the anionic surfactant and the cationic surfactant is 3 mol% or less, the total content of the surfactant is 10 to 30% by mass, and the ratio of (a) in the surfactant There is a 95 to 100 wt%, not including hypochlorite, liquid detergent composition. The liquid detergent composition of Claim 1 whose (a) is an amine oxide type surfactant represented by the following general formula (A).

[Wherein, R ¹ is an alkyl group or alkenyl group having 8 to 18 carbon atoms, R ² is an alkylene group having 1 to 6 carbon atoms, and A is —COO—, —CONH—, —OCO—, — It is a group selected from NHCO-. a is a number of 0 or 1, and R ³ and R ⁴ are each an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group. ]   The liquid cleaning composition of Claim 1 or 2 which contains 1-30 mass% of (a). The liquid detergent composition according to any one of claims 1 to 3 , wherein the pH is 6 to 9 at 20 ° C. The liquid detergent composition according to any one of claims 1 to 4, which is for a hard surface.   The liquid detergent composition according to any one of claims 1 to 5, wherein the nonionic surfactant excluding (a) is 5 mol% or less relative to (a).