JPH0329280B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to a liquid bleach composition containing a fragrance, and more particularly to a liquid bleach composition containing a fragrance that is chemically very stable in an aqueous sodium hypochlorite solution system. [Prior Art] Conventionally, an aqueous solution of sodium hypochlorite has been widely used, especially as a household bleaching agent, because it has strong bleaching power at a relatively low temperature. However, since sodium hypochlorite aqueous solution has a unique odor (hereinafter referred to as "chlorine odor"), it often irritates the nose and causes discomfort to the user. When a concentrated liquid gets on your hands, the odor is not easily removed even if you wash your hands with running water or soap, and it is difficult to completely eliminate the odor. Additionally, you may notice a chlorine odor from bleached clothing even after it has been thoroughly dried. As a method of overcoming the discomfort caused by the chlorine odor during use, Japanese Patent Publication No. 54-25514 proposes a method of incorporating a stable hypochlorous acid-based fragrance. [Problems to be solved by the invention] However, in the preparation of single fragrances within the range described in the above publication, the types of fragrances that can be prepared are limited due to the lack of raw materials, and there are various types of fragrances that can be prepared. The reality is that it is not possible to create different scents, there is no variety in scents, and therefore it is impossible to differentiate efficacy and effect. In order to diversify the scents that can be created, it is necessary to provide more stable hypochlorous acid-based fragrance materials. [Means for Solving the Problems] The present inventors have conducted intensive research to resolve the shortage of materials, and have found that (1) they do not have olefinic unsaturated bonds, and (2) they do not have functional groups. Various aroma properties based on the assumption that the carbon atom to which it is bonded is sterically hindered, that is, it has a sterically large substituent, which is a requirement for a fragrance compound that is stable in hypochlorous acid. As a result of searching for compounds, we discovered that certain fragrant compounds are extremely stable. That is, the present invention provides 2,6-dimethyl-heptane-
2-ol, p-tolyldimethylcarbinol, tricyclo[5.2.1.0 ^2,6 ]-decane-2-carboxylic acid alkyl ester (alkyl has 1 to 1 carbon atoms)
4 alkyl group), 2-tert-butylcyclohexyl carbonate, p-menthan-8-yl acetate, and ethylnorbornylcyclohexanol, and one or more single or combined fragrances selected from the group consisting of The present invention provides an aromatic liquid bleach composition containing sodium hypochlorite as an active ingredient, which is characterized by containing a surfactant that is stably dissolved in an aqueous sodium chlorate solution. Although these compounds satisfy the above requirements, all of them can completely mask the odor of chlorine, have little decomposition of sodium hypochlorite, and each has a unique scent as a single fragrance. In the present invention, in addition to the fragrance of one or more of these individual fragrances (combined fragrances),
To diversify the fragrance of a hypochlorous acid bleach composition by using it in combination with a fragrance that is stable in hypochlorous acid and does not impair the stability of sodium hypochlorite as described in Publication No. 25514. Can be done. On the other hand, for example, geranyl acetate, terpinyl acetate, linalool acetate, etc., which are well-known single fragrances, all have carbon-carbon double bonds and are rapidly oxidized in an aqueous sodium hypochlorite solution system.
It is not suitable for use in the present invention because it not only loses its value as a fragrance but also causes a decrease in the amount of available chlorine. The amount of the above-mentioned fragrance component of the present invention to be used can be appropriately determined depending on the intended use, conditions of use, etc., but it is generally preferable to add it in the composition in an amount of 0.001 to 1.0% by weight.
If it is less than 0.001% by weight, the chlorine odor cannot be sufficiently masked, and if it is more than 1.0% by weight, it is not economical although the effect of the present invention may be maintained. Further, in the present invention, it is necessary to add a surfactant in order to stably dissolve the fragrance component in the aqueous sodium hypochlorite solution. This surfactant may be one that stably dissolves in the sodium hypochlorite aqueous solution, for example, the general formula Sodium alkyl phenol ether sulfate represented by the general formula Sodium alkyl phenol ether carboxylate, general formula Examples include sodium alkyl diphenyl oxide disulfonate represented by: Further, sodium alkylbenzenesulfonate, alkylsulfate, alkanesulfonate, etc. can also be used in combination with the above surfactant. It is preferable that the surfactant is contained in the bleach composition in an amount of 0.1 to 10% by weight. If it is less than 0.1% by weight, it will be difficult to stably dissolve the fragrance component in the composition, and if it is more than 10% by weight, it will cause hypochlorite. This is not preferable because it tends to accelerate the decomposition of sodium chloride. Furthermore, the bleach composition of the present invention includes substances that impart alkalinity, such as sodium hydroxide, sodium carbonate, sodium metasilicate, and sodium triphosphate, as stabilizers for commonly used sodium hypochlorite. It is desirable to add sodium hydroxide, and among these, sodium hydroxide is the most preferred. Further, the aqueous sodium hypochlorite solution preferably does not contain sodium chloride, but may contain sodium chloride up to an equimolar amount of sodium hypochlorite. Based on the above, the preferred composition of each component of the liquid bleach composition of the present invention is as follows. Perfume 0.001 to 1% by weight Sodium hypochlorite 1 to 7 Surfactant 0.1 to 10 Stabilizer 0.1 to 2 Water Balance The liquid bleach composition of the present invention has the fragrance component stably blended as described above, The chlorine odor of sodium hypochlorite is canceled out, giving a pleasant fragrance when used, and the fragrance ingredients prevent sodium hypochlorite from decomposing even when stored for a long time as a household liquid bleach. The fragrance component also has the characteristic that it is uniformly dissolved in the composition and does not separate. Furthermore, by blending in combination with conventionally proposed fragrance ingredients, it is possible to obtain aromatic bleaching agents with various types of new fragrance tones, and it is possible to achieve diversification of fragrances. [Example] Next, the present invention will be explained with reference to an example. Example 1 A liquid bleach (available chlorine concentration: 6%) having the following composition was prepared using various single fragrances shown in Table 1 below.

[Table] Place this liquid bleach in a polyethylene bottle, seal it, and keep it at 40°C.
The residual rate of available chlorine was measured after storage in a constant temperature room for 3 months, and the storage stability was investigated. The effectiveness of this liquid bleach in masking chlorine odor was also investigated using the following method. About the bleach stock solution: Pour 50 c.c. of the above liquid bleach into a 100 c.c. beaker and judge by three panelists at room temperature. Judgment Criteria ◎: No chlorine odor is felt at all, giving a pleasant aroma. ○: No chlorine odor is felt at all. △: There is a slight chlorine odor. ×: There is a chlorine odor and another bad odor is produced. Regarding bleached towels: Dilute the above liquid bleach to 0.2% water, soak a cotton towel in this for about 15 minutes, then wash and dehydrate.
The presence or absence of chlorine odor was determined in the same manner as for this towel (the criteria were the same). Furthermore, the fragrance residual rate was measured by the following method. Fragrance residual measurement method: Add 1.5 times the mole of sodium sulfite to sodium hypochlorite to liquid bleach, stir for 30 minutes, extract with n-hexane, wash with water, concentrate, and quantify by gas chromatography. .

[Table] Comparative Example 1 For comparison, the same test as in Example 1 was conducted on individual fragrances other than the fragrance of the present invention, and the results are shown in Table 2.

[Table] Examples 2 to 6 Aromatic bleach compositions were prepared using the same composition as in Example 1 but with different fragrances. The fragrance formulation is shown below. Example 2 Ethyltricyclo[5.2.1.0 ^2,6 ]decane-2-carboxylate 100% The resulting composition gives a fresh fruity daily type fragrance. Example 3 Ethyltricyclo[5.2.1.0 ^2,6 ]decane-2-carboxylate 10% Tetrahydromgol 20 Dihydroterpineol 30 Phenylethyldimethylcarbinol 20 Benzophenone 20 Total 100% The resulting composition is citrus fruity type gives a fragrance. Example 4 Ethylnorbornylcyclohexanol 10% Neroline bromeliad 20 Tetrahydromugol 20 Dimethylbenzyl carbinyl acetate 30 Cedryl acetate 20 total 100% The resulting composition gives a fresh green type fragrance. Example 5 2,6-Dimethylheptan-2-ol 30% Phentyl alcohol 10 Dihydroterpineol 20 Tetrahydrolinalool 20 Phenylethyl dimethyl carbinol 20 total 100% The composition obtained gives a fresh floral type fragrance. Example 6 2-tert-tert-butylcyclohexyl carbonate 20 cedryl acetate 20 tetrahydromgol 20 phenylethyldimethylcarbinol 20 p-tert-butylcyclohexanol 20 total 100% The resulting composition has a floral morning-type fragrance. give. All of the compositions of Examples 2 to 6 exhibited excellent performance in chlorine odor masking effect, fragrance residual rate, and storage stability even after storage at 40°C for 3 months.

Claims (1)

[Claims] 1 2,6-dimethyl-heptan-2-ol,
p-toluyldimethylcarbinol, tricyclo[5,2,1,0 ^2,6 ]-decane-2-carboxylic acid alkyl ester (alkyl is an alkyl group having 1 to 4 carbon atoms), 2-tertiarybutylcyclohexyl carbonate, Contains one or more single or combined fragrances selected from the group consisting of p-menthan-8-yl acetate and ethylnorbornylcyclohexanol, and a surfactant that stably dissolves in an aqueous sodium hypochlorite solution. An aromatic liquid bleach composition containing sodium hypochlorite as an active ingredient.