JP2837360B2 - Detergent composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detergent composition having excellent lime soap dispersibility during washing and rinsing.

[0002]

2. Description of the Related Art Soaps (fatty acid alkali metal salts) have been used for a long time as detergents for clothes, baths, and facial cleansing because of their excellent safety and the like. The detergent composition containing soap as a main component also has an advantage of being superior in biodegradability as compared with alkylbenzene sulfonate which is used in large amounts as a synthetic detergent, especially a clothing detergent.

However, when soap is used in hard water, it reacts with polyvalent metal ions such as calcium ions and magnesium ions in the hard water to form insoluble lime soap (scum), which forms aggregates. Therefore, various adverse effects are caused. For example, when soap is used for washing, the lime soap deposits on clothing, causing the fabric to turn yellow and cause an unpleasant odor. In addition, the deposition of lime soap in washing machines and bathtubs is called "black trash" and causes clogging of water pipes. In addition, when soap is used for dishwashing, lime soap adheres to a dish or the like and requires labor for rinsing. Further, even in the case of toilet soap, it may cause an unpleasant odor and may cause stains in a wash basin or a bathroom.
Further, it has been known that when washing hair with soap, lime soap adheres and the hair becomes sticky, thereby impairing hair styling properties.

Conventionally, in order to solve such a problem of lime soap, a metal ion chelating agent capable of sequestering metal ions (calcium, magnesium, iron ions, etc.) contained in used water and dispersion of lime soap have been proposed. Compounds called agents have been added to soap compositions. Examples of the metal ion chelating agent include sodium ethylenediaminetetraacetate and sodium nitrilotriacetate, and when added in an appropriate amount in a washing bath, can prevent the formation of lime soap, but are diluted to an infinity during rinsing. Its effect is lost and lime soap is produced. However, it is economically difficult to add a large amount of a metal ion chelating agent to prevent the formation of lime soap even during rinsing. Examples of the dispersant for lime soap include ethylene oxide adducts of higher alcohols, polyoxyethylene polyoxypropylene block copolymers, α-sulfo fatty acid methyl, sulfated fatty acid alkanolamides, betaine, sulfobetaine, and aminocarboxylic acid amphoteric. Although surfactants and the like have been proposed, they have some improvement effects but are not sufficiently satisfactory.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a detergent composition which does not impair the excellent characteristics inherent in soap and has excellent dispersibility of lime soap produced during use. .

[0006]

The present inventors have SUMMARY OF THE INVENTION As a result of extensive studies to solve the above problems, Gattiga
It has been found that the dispersibility of lime soap can be remarkably improved by adding a combination of a detergent and a specific other polysaccharide to a detergent, and based on this finding, the present invention has been completed. That is, the gist of the present invention is that at least soap (fatty acid alkali metal salt), gutti gum and
It is a detergent composition comprising lavia gum or soybean extracted water-soluble hemicellulose .

The soap in the detergent composition of the present invention is a conventionally used fatty acid alkali metal salt, for example, beef tallow, coconut oil, palm oil, palm kernel oil, soybean oil, and a mixture of these oils and fats. Mixed fatty acids obtained by decomposition, lauric acid, myristic acid, palmitic acid, stearic acid,
Oleic acid, linoleic acid, carbon number 12 ~ such as linolenic acid
One obtained by saponifying one or more of the 18 linear fatty acids with an alkali metal compound such as sodium hydroxide, potassium hydroxide, sodium carbonate and potassium carbonate.

The polysaccharide used in the present invention is a uronic acid (for example, D-glucuronic acid, D-galacturonic acid, D-mannuronic acid) which is a sugar derivative having an aldehyde group and a carboxyl group as essential functional groups as constituent sugars. Etc.), wherein the content of uronic acid in such a polysaccharide is from 1 to
It is 100% by weight, preferably 1 to 70% by weight. Specifically, gum arabic, xanthan gum, karaya gum, tragacanth gum, gutti gum, alginic acid, hyaluronic acid, pectin, gellan gum, mesquite gum, damson gum, karaya gum, cocoa gum, sakura gum, peach gum, almond gum, western plum gum, lemon gum, grapefruit gum, okra gum, Red mani gum, troloi oil gum, junsai gum, mulberry leaf gum, hein gum, support gum, mill gum, eg plum gum,
Saneka gum, cola gum, zeolgum, melothia, quince seed gum, white mustard seed gum, flax seed gum, psyllium seed gum, etc., and oil seeds (soybean,
Rapeseed, cottonseed, sunflower, safflower, corn, flax, palm, palm, coconut, etc.) or hulls of cereals (wheat, barley, rice, millet, millet, etc.) are hydrolyzed with protease and / or hydrochloric acid, Examples include polysaccharides extracted from natural products such as water-soluble hemicellulose obtained by neutralization, separation of a water-soluble fraction (molecular weight: about 10,000 to 1,000,000) and the like. Among them, gutti gum, alginic acid, pectin, soybean-extracted water-soluble hemicellulose and gum arabic obtained from soybean hulls and okara as raw materials are more preferable, and most preferred are gutti gum, gum arabic and soybean-extracted water-soluble hemicellulose. Further, in the present invention, the effect of the present invention can be synergistically enhanced by using a combination of gutti gum and gum arabic or a combination of a gut gum and a soybean-extracted water-soluble hemicellulose among such polysaccharides.

In the detergent composition of the present invention, the polysaccharides can be used alone or in combination.
The blending amount is not particularly limited, but is preferably from 0.1 to 20% by weight, more preferably from 1 to 10% by weight, based on the total amount of the detergent composition. If the amount is less than 0.1% by weight, the effect of dispersing lime soap cannot be exhibited, and if the amount exceeds 20% by weight, a further increase in the effect cannot be expected.

[0010] The detergent composition of the present invention can be used in combination with other surfactants to form a complex soap, depending on the purpose of use, and may contain the following auxiliary components and additives. You may. For example, in the case of soap for clothing, zeolite, sodium silicate, sodium bicarbonate, sodium sesquicarbonate, sodium sulfate, sodium phosphate, and other inorganic builders, sodium ethylenediaminetetraacetate, sodium nitriloacetate, sodium citrate, sodium malate, Organic builders such as sodium gluconate, anti-redeposition agents such as carboxymethyl cellulose, other enzymes (cellulase, protease, lipase, etc.), perfumes, pigments, coloring agents and other components commonly used in laundry detergents as required Can be added.

The detergent composition of the present invention can be prepared by mixing the individual components in a dry state or by kneading, dehydrating, and spray-drying after forming an aqueous solution, in the form of liquid soap, powdered soap, Any of solid bath soap and facial soap may be used.

[0012]

The present invention will be described in more detail with reference to Examples, but the following Test Examples, Examples and Comparative Examples do not limit the present invention in any way. Test Examples The lime soap dispersibility of various dispersants was tested by the following method.
100 ml of hard water (containing 450 ppm of calcium carbonate) was added to 5 g of sodium oleate, stirred and completely converted to calcium oleate, and an additive expected to disperse the calcium oleate was added. The minimum addition weight of the additive required to disperse until no more was expressed as a percentage of the weight of sodium oleate, and was defined as the lime soap dispersing power. Table 1 shows the results. It was recognized that the uronic acid-containing polysaccharide (test Nos. 1 to 6) used in the present invention had an excellent effect of dispersing lime soap.

[0013]

[Table 1]

Examples 1 and 2 and Comparative Examples 1 to 4 Laundry soap having the composition shown in Table 2 was prepared by a dry blending method. Next, using these, a washing test was performed under the following conditions to evaluate the detergency and the state of lime soap generation. (Washing conditions) Calcium concentration in water: 1 as CaCl
33 ppm, soap concentration: 1.33 g / liter, stained cloth: polished stained cloth, washing and rinsing temperature: 30 ° C., washing time: Tergot-0-meter (trade name, manufactured by Yasuda Seiki Seisakusho Co., Ltd.) 10 minutes at 120 rpm
Rinsing time: The cycle of the washing process followed by the rinsing process is repeated twice at 120 rpm for 3 minutes on the same machine. (Evaluation) The washing liquid and the rinsing liquid were separately collected, left for 1 hour, and then the water-insoluble lime soap generated in each liquid was separated using a filter paper. Commercial laundry detergent (main component: linear alkylbenzene sulfonate and anhydrous sodium sulfate)
Was evaluated in comparison with the case where the above was used. In addition, the dirt washability was also comparatively evaluated. -Amount of lime soap generated ... Similarly less than synthetic detergents: O, slightly more: △, considerably more: X-Wash-off property: Same as compared to synthetic detergents: O, slightly inferior: Δ, poor: × The results are shown in Table 3. Laundry soap containing the uronic acid-containing polysaccharide had good wash-off properties and generated little lime soap.

[0015]

[Table 2]

[0016]

[Table 3]

Examples 3 and 4 and Comparative Examples 5 to 8 The components shown in Table 4 were mixed to prepare kitchen soaps. Then, using these, a washing test was performed under the following conditions, and the washing property and the state of generation of lime soap were examined. (Wash conditions) of calcium in water and magnesium concentration: 59 ppm as CACI _2, as MgCl ₂ 2
7.2 pm, soap concentration: 1.5 g / l, dirty:
Dirty glass plate, washing and rinsing temperature: 30
° C, washing time: 3 minutes at 250 rpm using a Rinatsu improved detergency tester (manufactured by Yamato Scientific Co., Ltd.). Rinse time: 1 minute at 250 rpm with the same tester. Repeat once. (Evaluation) The amount of lime soap generated in the washing liquid and the rinsing liquid based on a commercially available kitchen synthetic detergent (mainly composed of a linear alkylbenzene sulfonate and sodium polyoxyethylene alkyl ether sulfate) as in Example 1. And the wash-off properties were evaluated comparatively. Table 5 shows the results. The kitchen soap containing the uronic acid-containing polysaccharide was excellent in terms of washability and generation of lime soap.

[0018]

[Table 4]

[0019]

[Table 5] Note) The meanings of the symbols in the table are the same as in Table 3.

Example 5 and Comparative Example 9 A toilet soap having the composition shown in Table 6 was prepared. This was used under the following conditions, and the generation state of lime soap was examined. (Conditions) Calcium concentration in water: 270 ppm · soap concentration as CaCl _2: 1.0 g / l (Operation) placed soap liquid sample 100ml of a predetermined concentration in the cylinder, pouring with agitation the hard water 100ml of 50 ± 3 ° C. Then, after standing in a thermostat at the same temperature for 10 minutes, the floating water-insoluble lime soap was separated by a filter paper, and the amount thereof was examined. (Evaluation) Compared with a commercially available sodium laurate-based solid detergent, the amount of lime soap generated was evaluated according to the following criteria.・ Same degree ○ ・ Somewhat much △ ・ Fairly much × The results are shown in Table 7. As is clear from the table, the cosmetic soap containing the uronic acid-containing polysaccharide of the present invention generates a small amount of water-insoluble lime soap.

[0021]

[Table 6]

[0022]

[Table 7] Note) The meanings of the symbols in the table are the same as in Table 3.

Example 6 and Comparative Example 10 A liquid body cleanser having the composition shown in Table 8 was prepared. This was used under the same conditions as in Example 5, and a comparative evaluation was conducted in the same manner based on a commercially available liquid body cleaning agent (main components: lauryl sulfate triethanolamine salt and lauryl polyoxyethylene sulfate sodium salt). Result 9
It is shown in the table. From the same table, it was also confirmed that the liquid body cleanser containing the uronic acid-containing polysaccharide of the present invention hardly generates water-insoluble lime soap.

[0024]

[Table 8]

[0025]

[Table 9] Note) The meanings of the symbols in the table are the same as in Table 3.

[0026]

According to the present invention, the generation of water-insoluble lime soap can be suppressed without impairing the original washing power of soap.
And because it can be dispersed, it is possible to prevent yellowing and unpleasant odor of clothing and water pipes caused by the lime soap, which was regarded as a defect of soap, that is, a cause of soiling of a washbasin or a bathroom, and the like. . When a natural polysaccharide is blended, a detergent composition having good biodegradability can be obtained.

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁶ , DB name) C11D 9/26 CA (STN) CAOLD (STN) REGISTRY (STN)

Claims (1)

(57) [Claims] 1. A detergent composition comprising, at least in addition to soap (fatty acid alkali metal salt), gummy gum and gum arabic or soybean extracted water-soluble hemicellulose .