JP3036909B2 - Liquid cleanser composition containing iodine fungicide - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid cleanser composition containing an iodine-based germicide, and more particularly, to a liquid cleanser composition containing an iodine-based bactericide having excellent dispersion stability of an abrasive.

[0002]

2. Description of the Related Art Several liquid cleanser compositions have heretofore been proposed, but those having improved detergency and stability are mainstream. Formulated cleanser compositions have not yet been proposed.

Accordingly, the present inventors have formulated an iodine-based germicide, which is widely used as a bactericide, into a cleanser composition because of its excellent bactericidal activity and extremely low toxicity to the human body. Various studies have been made for the purpose of improvement.

However, a water-insoluble abrasive is blended in the cleanser. If an iodine-based germicide is blended in such a system, the abrasive will separate and precipitate, and a stable system cannot be obtained. Further, if the composition is made to emphasize dispersion stability in order to improve such a defect, the foaming property, detergency, and sterilization power are inevitably reduced. For this reason, even if an iodine-based bactericide is simply blended, a bactericide-containing liquid cleanser composition that has excellent cleaning properties such as abrasive power, detergency, foaming properties, and bactericidal power, and that maintains stability for a long period of time, I can't get it.

[0005]

In view of such circumstances, the present inventors have intensively studied to obtain a stable liquid cleanser composition containing an iodine-based fungicide. As a result, it was surprisingly found that the amphoteric surfactant acts as a dispersion stabilizer of the abrasive in a cleanser containing an iodine-based germicide, and that the stability is further improved by magnesium sulfate. Reached.

According to the present invention, an iodine bactericide, as a dispersion stabilizer for an abrasive, at least 0.1 to 10% by weight of alkyldimethylamine oxide, an anionic surfactant and a nonionic surfactant are compounded. It is intended to provide a liquid cleanser composition containing an iodine-based germicide, characterized in that the stability is further improved by adding 0.1 to 8% by weight of magnesium sulfate.

In the present invention, in addition to the amphoteric surfactant, an anionic surfactant and a nonionic surfactant used in this type of cleanser are blended, so that the anionic surfactant and the amphoteric surfactant are strongly combined. It is considered that a cleanser composition which is stable over time and thermally can be formed because a suitable aggregate viscosity is formed by forming a suitable aggregate. Further, by further adding magnesium sulfate, the stability is further improved.

The iodine fungicide to be used may be a known one, and examples thereof include povidone iodine and iodine. Examples of the povidone iodine include PVP-IODINE 30/0.
6 (manufactured by BASF), PVP-Iodine 10 (GA
As the iodine, iodine (manufactured by Mitsui Toatsu Co., Ltd.), iodine (manufactured by Godo Resources), and the like are suitably used. The iodine fungicide is used in an amount of 0.05% by weight (effective iodine concentration: 50 ppm) to 1.0% by weight (effective iodine concentration: 1000 ppm), preferably 0.1% by weight (effective iodine concentration: 100 ppm) to 0% based on the total amount of the composition. 0.5% by weight (effective iodine concentration 5
(00 ppm). 0.05% by weight
If the amount is less than the above, iodine stability is poor and the bactericidal activity is not sufficiently exhibited. If the amount is more than 1.0% by weight, problems such as the color of the composition being too dark and discoloration of the object to be washed occur.

As the amphoteric surfactant used as a stabilizer in the present invention, there may be mentioned, for example, betaine alkyldimethyl acetate, betaine alkylamide, and alkyldimethylamine oxide. The amphoteric surfactant is incorporated in the composition in an amount of 0.1 to 10% by weight, preferably 1 to 5% by weight. If the amount is less than 0.1% by weight, the stabilizing effect is not sufficient.

In the present invention, in order to further enhance the stability of the composition, if necessary, 0.1 to 8% by weight, preferably 1 to 3% by weight of magnesium sulfate may be added to the total amount of the composition. . When the amount is less than 0.1% by weight, a sufficient stabilizing effect cannot be obtained. When the amount is more than 8% by weight, the abrasive is separated and precipitated, and the stability is impaired.

[0011] As described above, the cleanser composition of the present invention contains an anionic surfactant and a nonionic surfactant in addition to the amphoteric surfactant. Examples of the anionic surfactant include a polyoxyethylene alkyl ether sulfate, an alkylbenzene sulfonate, an α-olefin sulfonate, an alkane sulfonate, an alkyl sulfate, and the like. The content is 0.5 to 25% by weight, preferably 5 to 15% by weight. If the amount is less than 0.5% by weight, the detergency is low and a sufficient stabilizing effect cannot be obtained. On the other hand, if the compounding amount exceeds 25% by weight, the abrasive is separated and settled, thereby deteriorating the stability and uneconomical.

Examples of the nonionic surfactant include polyoxyethylene alkyl ether, fatty acid alkanolamide or an alkylene oxide adduct thereof, and polyoxyethylene alkyl phenyl ether. The nonionic surfactant is incorporated in the composition in an amount of 0.5 to 10% by weight, preferably 1 to 5% by weight. 0.5% by weight
If the amount is less than the above, the stabilizing effect is not sufficient, and if the amount is more than 10% by weight, the detergency decreases, or the abrasive is separated and precipitated, so that the stability is impaired.

As the abrasive, a known water-insoluble abrasive is used. For example, agate, quartz, silica, alumina, diatomaceous earth, pearlite, having an average particle diameter of 1 to 100 μm,
Feldspar, aluminosilicate, aluminum hydroxide, emery, dolomite, magnesium oxide, titanium oxide, silicon carbide, plastic powder (eg, polystyrene, polyacrylate, nylon, etc.), and natural pulverized material (eg, sand, etc.). These may be used alone or in combination of two or more. The water-insoluble abrasive is used in an amount of 1 to 60% by weight, preferably 5 to 25% by weight based on the total amount of the composition. If it is less than 1% by weight, the polishing power is insufficient, and if it is more than 60% by weight, the viscosity increases and the feeling of use such as ease of removal from the container is impaired.

The liquid cleanser composition of the present invention containing an iodine bactericide can be obtained by mixing and stirring the desired components by a conventional method. Also, if necessary, the iodine-based germicide-containing liquid cleanser composition of the present invention further includes a polyhydric alcohol, an inorganic salt, an organic salt, a fragrance, a coloring agent, a preservative, or a range that does not impair the stability of iodine. Additives such as high molecular substances such as cationized cellulose can be appropriately added as other surfactants and feel improvers.

[0015]

Next, the present invention will be described in more detail with reference to Examples and Comparative Examples. Examples 1 to 7 and Comparative Examples 1 to 3 According to the formulations shown in Table 1, a liquid cleanser composition containing an iodine-based bactericide was obtained according to a conventional method. Using these, the following items were evaluated. Table 1 shows the results.

(Evaluation method) The evaluation of the test sample was performed by the following method. Detergency: 0.1% by weight of Sudan III (red dye) was added to beef tallow as an indicator, and 5 g of this was added to a magnetic dish (diameter 25 cm).
Was applied. This was indicated by the number of dishes that had been scrubbed with a sample and water-soaked sponge and washed until no more tallow could be removed from the dishes.

Foaming power: Commercially available butter is used as a dirt component in a detergent concentration of 0.2% by weight.
0.5 g was added to the sample solution of the above. This is FOAM T
200ml in ESTER SX-203 (Okino Seisakusho)
The mixture was rotated and stirred for 5 minutes, and the amount of foam (ml) after stopping was measured.

Storage stability: 100 ml of each composition, 4
The sample was collected in a 100 mm glass bottle having a height of 0 mm and a height of 70 mm, sealed and stored for one month, and the appearance was visually observed. The criteria are as follows. ○: Not separated (stable) △: Slightly separated ×: Completely separated

Feeling of use: The color and odor that became apparent with an increase in iodine were evaluated according to the following criteria. ○: No psychological resistance in use ×: Psychological resistance in use

Bactericidal activity: Put into a sterile action test tube containing 1 ml (10 ⁶ cells / ml) of the Escherichia coli strain subjected to the preculture three times in total, and allowed to act at 25 ° C. for 1 minute, followed by an action test. One platinum loop was removed from the tube and planted in a fresh SCD medium. Then, the cells were cultured at 37 ° C. for 48 hours, and the presence or absence of bacterial growth was determined according to the following criteria. ○: No survival of bacteria was observed ×: Survival of bacteria was observed

Overall evaluation: The following criteria were used for evaluation. ：: Detergency of 10 sheets or more, foaming power of 600 ml or more, and evaluation of storage stability, antibacterial power and feeling of use are all ×: Cleaning power of less than 10 sheets, foaming power of less than 600 ml and / or storage Any or all of the evaluations of stability, antibacterial activity and feeling of use are ×

[0022]

[Table 1]

[0023]

According to the present invention, it is possible to obtain a liquid cleanser composition containing an iodine-based germicide, which has excellent cleaning properties and maintains stability for a long period of time.

Continuation of the front page (56) References JP-A-2-51598 (JP, A) JP-A-61-127799 (JP, A) JP-T-62-502336 (JP, A) US Patent 4,808,328 (US, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) C11D 3/48 C11D 3/14 C11D 1/94 CA (STN) CAOLD (STN) REGISTRY (STN) WPIDS (STN)

Claims (3)

(57) [Claims] 1. An iodine-based germicide, and at least 0.1 to 10% by weight of an alkyldimethylamine oxide as an abrasive dispersion stabilizer, an anionic surfactant and a nonionic surfactant are compounded. A liquid cleanser composition containing an iodine-based bactericide. 2. The composition according to claim 1, wherein the anionic surfactant is incorporated in an amount of 0.1 to 10% by weight based on the whole composition, and the nonionic surfactant is incorporated in an amount of 0.5 to 10% by weight based on the entire composition. A liquid cleanser composition containing the iodine-based germicide according to the above. 3. The method according to claim 1, further comprising adding magnesium sulfate in an amount of 0.1 to 8%.
The cleanser composition containing an iodine-based fungicide according to claim 1 or 2 which is blended by weight.