JPS6232197A - Aromatic liquid bleaching composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a liquid bleach composition containing a fragrance, more specifically, in order to improve the storage stability of sodium hypochlorite, which is a bleach-activated bone, This invention relates to an aromatic liquid bleach composition in which the concentration of soluble agents is kept low by using a surfactant that has particularly excellent ability to solubilize fragrances.

[Conventional technology and its problems]

Conventionally, an aqueous solution of sodium hypochlorite has been widely used as a household bleaching agent because of its relatively low temperature and strong bleaching properties. However, sodium hypochlorite aqueous solution has a unique odor (hereinafter referred to as "chlorine odor").
Because of this, it often irritates the nose and causes discomfort to the user.Especially when a highly concentrated liquid gets on your hands, the odor is not easily removed even if you wash it with running water or soap. It is difficult to completely eliminate it. In addition, even after bleached clothing has been thoroughly dried, a chlorine odor may be felt.

As a method of overcoming the discomfort caused by the chlorine odor during use, there is a method of incorporating a fragrance as described in JP-A-50-74581. Although the method described here can prevent the chlorine odor, the fragrance The surfactant used as a solubilizer has insufficient solubilizing ability at low concentrations, so a relatively large amount must be added, which has the major disadvantage of accelerating the decomposition of sodium hypochlorite, which is an active bleaching ingredient. be.

Generally, the decomposition rate of sodium hypochlorite increases when organic substances coexist in the sodium hypochlorite aqueous solution. Special Public Service 1977
According to Publication No. 39967, polyoxyethylene alkylphenol ether sulfate salt A represented by the following general formula I and polyoxyethylene alkylphenol ether sulfate sulfonate salt B represented by the following general formula is a molar ratio of 20/80 to 85/15
There is a statement that using sodium hypochlorite reduces the decomposition rate of sodium hypochlorite and acts as a stabilizer. Compared to an aqueous sodium chlorate solution, the only result was that the decomposition was accelerated rather than being stabilized.

General formula ■ General formula ■ [Means for solving the problem] As a result of intensive research in search of a material with extremely excellent fragrance solubilizing ability, the present inventor found that polyoxyethylene alkylphenyl ether or alkyldiphenyl ether Alkali metal salts of sulfates with a ratio of sulfate acid value to theoretical acid value (acid value when 1 mole of SO3 reacts with 1 mole of polyoxyethylene nonylphenol ether or alkyldiphenyl ether) of 1.35 or more can be used as fragrances. A blend of 10.01% by weight or more and less than 0.5% by weight that has excellent solubilizing ability and does not promote the decomposition of sodium hypochlorite to prevent discomfort caused by chlorine odor when using sodium hypochlorite bleach. It was discovered that a sufficient amount of fragrance can be solubilized, leading to the present invention.According to the present invention, there is no unpleasant chlorine odor, and the decomposition rate of sodium hypochlorite is lower than that of fragrance and surfactant. An aromatic liquid bleach composition is provided that is substantially equivalent to an aqueous sodium hypochlorite solution.

That is, the present invention provides an aromatic liquid bleach composition characterized by containing the following three components a), b), and C).

a) Sodium hypochlorite 1 to ion amount% (as the amount of available chlorine) b) Fragrance o, ooi to 1% by weight C) As a fragrance solubilizer, an alkali of a sulfate of polyoxyethylene alkylphenyl ether or alkyldiphenyl ether Metal salt (However, when 1 mole of 503 is reacted with 1 mole of polyoxyethylene alkylphenyl ether or alkyldiphenyl ether, the ratio of the acid value of the sulfide to the theoretical acid value is 1.35 or more.>
o, oi % by weight or more and less than 0.5% by weight C) As raw materials for the alkali metal salt of sulfate which is a fragrance solubilizer used in the present invention, polyoxyethylene alkylphenyl ether having an average carbon number of 6 to 12 is used. has an alkyl group of
Added with 1 to 20 moles of ethylene oxide, or alkyldiphenyl ether with an average carbon number of 6 to
Examples include those having 12 alkyl groups.

Among the sulfates obtained by sulfating these raw materials, those having a ratio of the sulfide acid value to the theoretical acid value of 1.35 or more can be used. If it is less than 1.35, the solubilizing ability is insufficient, and a relatively large amount is required to solubilize the fragrance without causing a chlorine odor. cannot be used because it would result in promoting

The blending amount of the fragrance solubilizer is 0.01% by weight or more and less than 0.5% by weight, preferably 0.1 to 0.4% by weight. 0.
If it is less than 0.01% by weight, it will be difficult to stably dissolve the fragrance component in the composition, and if it is more than 0.5% by weight, it will tend to accelerate the decomposition of sodium hypochlorite, which is not preferable.

The simple fragrance that can be used as a fragrance component in the present invention may be a secondary or tertiary alcohol, a secondary alcohol or a secondary alcohol, depending on its chemical structure.
It can be roughly divided into lower alkyl esters of secondary or tertiary alcohols and others, and particularly preferred secondary or tertiary alcohol types include p-tert-butylcyclohexanol, dimethylbenzylcarbinol,
Dimethylphenylethylcarbinol, dihydroterpineol, fenthyl alcohol, p-methyldimethylbenzylcarbinol, tetrahydrolinalool, tetrahydrolinalool and bendol, secondary or tertiary
Lower alkyl ester types of alcohols include cedrenyl acetate, dimethylbenzylcarbinyl acetate, dihydroturbinyl acetate, fentylacetate, methylphenylcarbinyl acetate, menthyl-n-valylate, phenylethyldimethylcarbinyl acetate, Rosephenone, styralylprobionate, tetrahytromugyl acetate, tetrahydrolinalyl acetate, berbetone, perdox and coniferan, others are anizole, benzophenone, benzyl phenyl ether, promelia, diphenyl oxide, musk mosquene, methyl amyl ketone, muscarome. and Yarayara, etc. The above-mentioned single fragrances hardly impair the stability of sodium hypochlorite, are stable themselves in an aqueous sodium hypochlorite solution, and have an excellent effect of masking chlorine odor.

The amount of the fragrance component to be used can be appropriately determined depending on the intended use, conditions of use, etc., but it is generally preferable to add it to the composition in an amount of 0.001 to 1.0% by weight.

If it is less than 0.0011% by weight, the chlorine odor cannot be sufficiently masked, and if it exceeds 1.0% by weight, the effect of the present invention may be maintained, but it is not economical.

Furthermore, the bleach composition of the present invention contains 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, or a combination of sodium hydroxide and sodium metasilicate is most preferred.

Although it is preferable that the sodium hypochlorite aqueous solution does not contain sodium chloride, it may contain up to about an equimolar amount of sodium chloride to the sodium hypochlorite.

〔Effect of the invention〕

The liquid bleach composition of the present invention has fragrance components stably blended as described above, cancels out the chlorine odor of sodium hypochlorite, gives a pleasant aroma when used, and is suitable for use as household liquid bleach. Even when stored as a composition for a long period of time, sodium hypochlorite is unlikely to decompose due to the fragrance solubilizer, and the fragrance components are also uniformly dissolved in the composition without causing decomposition.

〔Example〕

The present invention will be explained below with reference to Examples, but the present invention is not limited thereto.

Example 1 Table 1 shows the fragrance solubilizing ability of polyoxyethylene nonylphenyl ether (general formula m) sulfated product IJum salt in a liquid bleach system having the following composition (available chlorine concentration: 6%).

The fragrance solubilizing ability was expressed as the minimum concentration of sulfate sodium salt that can solubilize 0.05% of tetrahydrolinalool.

General formula ■ C9HIq G 0(C)lzcIlto)4H Liquid bleach Composition Sodium hypochlorite 6.3% by weight 0.
1-3.0% by weight Sodium hydroxide 1.0% by weight Tetrahydrolinalool 0.05% by weight Ion-exchanged water Balance table 1 Is it possible to use nonylphenol ether, lYfml sodium salt fragrance? Ei to Noh Example 2 The storage stability of the liquid bleach compositions shown in Table 2 was investigated.

The storage stability was evaluated as follows after storage at 40°C for 1 month.

Cloudy liquid (after storage) ○: Completely transparent ×:/! ! There are 5

Claims (1)

[Scope of Claims] 1. An aromatic liquid bleach composition characterized by containing the following three components a), b) and c). a) 1 to 10% by weight of sodium hypochlorite (as the amount of available chlorine) b) 0.001 to 1% by weight of fragrance c) As a fragrance solubilizer, an alkali of a sulfate of polyoxyethylene alkylphenyl ether or alkyldiphenyl ether Metal salt (however, the ratio of the acid value of the sulfate to the theoretical acid value when 1 mole of SO_3 reacts with 1 mole of polyoxyethylene alkylphenyl ether or alkyldiphenyl ether is 1.35 or more)
0.01% by weight or more but less than 0.5% by weight