JPH02212599A - liquid cleaning bleach composition - Google Patents

Abstract

PURPOSE:To obtain the title composition excellent both in cleaning and bleaching power and in storage stability by mixing a sulfobetaine ampholytic surface active agent, an amine oxide compound, an alkali metal salt of an alkylsarcosine, an alkali metal salt of hypochlorous acid, and an alkaline substance. CONSTITUTION:The title composition comprises 0.01-10wt.% sulfobetaine ampholytic surface active agent of formula I (wherein R1 is 8-22C alkyl; R2 and R3 are each 1-2C alkyl; n is 2 or 3); 0.1-5wt.% amine oxide compound of formula II (wherein R4 is 8-20C alkyl; R5 and R6 are each 1-3C alkyl); 0.1-6wt.% alkali metal salt of an 8-18C saturated fatty acid or of a 10-18C alkylsarcosine; 0.5-10wt.% alkali metal salt of hypochlorous acid; and 0.1-10wt.% alkaline substance. This composition has moderate viscosity and is excellent both in cleaning and bleaching power and in storage stability.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a cleaning bleach blade and a liquid cleaning bleach composition with excellent storage stability.

[Conventional technology and its problems]

BACKGROUND ART Conventionally, many cleaning bleach compositions containing an alkali metal hypochlorite as a main base have been known.

As a surfactant as a cleaning aid, these compositions have a high solubility in an aqueous solution of alkali metal hypochlorite,
Due to the stability of available chlorine in an aqueous solution of alkali metal hypochlorite, alkali metal salts of sulfates of polyoxyethylene alkylphenyl ethers or alkyldiphenyl ethers (e.g., JP-A-52-69415), paraffin sulfonates (e.g., JP-A-52-69415), Anionic surfactants such as (Sho 54-148006) have been used.

In addition to anionic surfactants, carbobetaine-based amphoteric surfactants (for example, British Patent No. 132908)
No. 6, Dutch Patent No. 148103, JP-A-60-
33300) etc. have been selected. Although the addition of these surfactants improves the surface activation ability of the cleaning solution and improves the cleaning power, it is still far from being sufficient.

In addition, conventional liquid cleaning bleach compositions have low viscosity and poor retention on slopes and vertical surfaces, so they have not been able to fully demonstrate the cleaning power of the detergent.

In order to improve retention on slopes and vertical surfaces, various measures have been taken to increase the viscosity of alkali metal hypochlorite. For example, a method using hydrated aluminum or magnesium silicates such as acpulgite or montmorillonite (e.g., JP-A-57-168999), a method using seviolite clay minerals (e.g., JP-A-57-168999);
-21969), but the former has poor retention of available chlorine and long-term storage stability under strong alkali (in the latter, Seviolite itself is clay-colored. (ocher color), which is not desirable in terms of appearance, and also cannot be said to have excellent long-term storage stability.

Water-soluble polymer compounds such as polyvinyl alcohol, methylcellulose, polyacrylates, and xanthan gum are generally used as organic thickeners, but although they are excellent in terms of effective chlorine retention and long-term storage stability, The reality is that there is no such thing.

Means for Solving Problem C] The present inventors have developed a liquid that has appropriate viscosity, does not impair the stability of alkali metal hypochlorite, and has excellent appearance stability even during long-term storage. As a result of intensive research to find a cleaning agent, it was discovered that the objective could be achieved by a combination of the following specific components, and the present invention was completed.

That is, the present invention provides (a)-maximum (wherein R+ is an alkyl group having 8 to 22 carbon atoms, RZ,
Ri represents an alkyl group having 1 to 2 carbon atoms, and n represents an integer of 2 to 3. ) 0.01 to 10% by weight of a sulfobetaine type amphoteric surfactant (b) - Maximum R4RSR,NH3(■) (in the formula,
R4 is an alkyl group having 8 to 20 carbon atoms, R,,R.

represents an alkyl group having 1 to 3 carbon atoms. ) C) Carbon number 8
0.1 to 6% by weight of an alkali metal salt of ~18 saturated fatty acids or alkylsarcosine having 10 to 18 carbon atoms (d) 0.5 to 10% of an alkali metal salt of hypochlorite
The present invention provides a liquid cleaning bleach composition characterized by containing 0.1 to 10% by weight of a substance exhibiting alkalinity (polymerization).

In the above-mentioned maximum (I), R9 is an alkyl group having 8 to 22 carbon atoms, preferably an alkyl group having 12 to 18 carbon atoms. R,, R, is an alkyl group having 1 to 2 carbon atoms,
Among these, a methyl group having 1 carbon number is preferred. n is an integer of 2 to 3, preferably 3.

In general formula (II), the alkyl group having 8 to 20 carbon atoms for R4 includes an octyl group, a decyl group, a dodecyl group,
Examples include tetradecyl group, hexadecyl group, and octadecyl group. Among these, dodecyl and tetradecyl groups are preferred, but a mixture of alkyl groups having different carbon numbers derived from natural products may also be used. R,,
R.

is an alkyl group having 1 to 3 carbon atoms, and examples thereof include a methyl group, an ethyl group, a propyl group, and among these, a methyl group is preferable.

Specific examples of the amine oxide compound (b) represented by - maximum (old) include lauryl dimethyl amine oxide, myristyl dimethyl amine oxide, and coconut dimethyl amine oxide.

As the alkali metal salt (C) of a saturated fatty acid having 8 to 18 carbon atoms or an alkylsarcosine having 10 to 18 carbon atoms,
Usually, sodium laurate, sodium lauryl sarcosinate, etc., and mixtures of two or more thereof are used.

As the alkali metal hypochlorite salt (d), sodium hypochlorite is usually used.

Examples of the substance (e) exhibiting alkalinity include sodium hydroxide, sodium carbonate, sodium metasilicate, sodium triphosphate, etc. Among these, sodium hydroxide is preferred.

The content of the sulfobetaine type amphoteric surfactant (a) in the liquid cleaning bleach composition of the present invention ranges from 0.01 to 10% by weight, preferably from 0.03 to 5% by weight. Content of sulfobetaine type amphoteric surfactant is 0.01% by weight
When the amount is less than that, the storage stability of the composition deteriorates. 10 more
Contents exceeding % by weight are practically not required.

The content of amine oxide compound Cb) ranges from 0.1 to 5% by weight, preferably from 0.1 to 3% by weight. If the content of the amine oxide compound is less than 0.1% by weight, the storage stability of the composition will deteriorate, and if it exceeds 5% by weight, the stability of the alkali metal hypochlorite will be impaired.

The content of the alkali metal salt (C) of saturated fatty acid having 8 to 18 carbon atoms or alkyl sarcosine having 10 to 18 carbon atoms is in the range of 0.1 to 6% by weight, preferably 0.1 to 4% by weight. Saturated fatty acids with 8 to 18 carbon atoms or 10 carbon atoms
When the content of the alkali metal salt of ~18 alkyl sarcosine is less than 0.1% by weight, the viscosity does not increase and the content is 6% by weight.
If it exceeds this value, the viscosity will increase too much and the feeling of use will be impaired.

The content of alkali metal hypochlorite (a) is 0.5-1
0% by weight, preferably in the range 2-7% by weight. If the content of alkali metal hypochlorite is less than 0.5% by weight, the bleaching blade will be insufficient, and a content exceeding 10% by weight is not actually required.

The content of the substance exhibiting alkalinity (e) is 0.1 to 10
% by weight, preferably in the range 0.5-5% by weight.

The liquid cleaning bleach composition of the present invention may further contain additives such as those commonly used, such as other surfactants, chelating agents,
Components such as fragrances and coloring agents can be added.

The viscosity of the liquid cleaning bleach composition according to the present invention is usually 5 to 2000 cp (B-type viscometer, 20°C), and can be used depending on the purpose of use.

〔Example〕

Next, the present invention will be explained with reference to Examples, but the present invention is not limited to these Examples.

1-2 and 1-7 Prepare each liquid cleaning bleach composition having the composition shown in Table-1,
The detergency, finish feel, and low-temperature stability of each product were evaluated based on the following criteria.

For the evaluation of cleaning power and finish, a general household flush toilet with dirt that cannot be removed by simply flushing was selected as the surface to be cleaned, and 30 g of liquid cleaning bleach for evaluation was applied to the flush toilet. The condition of the toilet bowl surface after rinsing with the flush was examined.

<Cleaning power> O: More than 80% of dirt is removed Δ: 2-50% of dirt is removed ×: Almost no dirt is removed <Finish feeling> ○: After rinsing, the area that repels water is more than 20% Δ: Rinsed After rinsing, the part that repels water is 20 to 50% ×: After rinsing, the part that repels water is 50% or more.
The appearance of the composition was observed when it was stored for 30 days (1 cycle/day).

O: No change from before storage.

Δ: Slight separation/precipitation is observed.

×: Separation and precipitation are observed.

These evaluation results are shown in Table-1.

3-4 and 8-11 Each liquid cleaning bleach composition shown in Table 2 was prepared, and the viscosity (difficulty of liquid dripping) and finished feel of each liquid were evaluated based on the following criteria.

The surfaces to be cleaned at this time were Examples 1 to 2 and Comparative Example 1.
A flush toilet bowl selected in the same manner as in 7 was used.

<Liquid viscosity (difficulty in dripping)> Thirty housewives used the liquid cleaning bleach for evaluation, and evaluated it on a five-point scale regarding the difficulty in dripping on vertical surfaces.
The average value was calculated.

5: The liquid does not drip easily 4: The liquid does not drip easily 3: Neither can be said 2: The liquid tends to drip a little 1: The liquid easily drips <Finish feeling> Using the liquid cleaning bleach for evaluation, 30 housewives were asked The participants were asked to wash the toilet bowl, and the results were evaluated on a five-point scale based on the average quality of the finished product after rinsing.

: Good finish (gloss); Slightly good finish (slightly glossy): Neutral 2. Not very good finish (not very glossy) 1: Poor finish (slightly glossy) The results of these evaluations are shown in Table 2.

〔Effect of the invention〕

According to the present invention, a liquid cleaning bleach composition can be obtained which not only has an excellent stain removal effect but also has an excellent finishing effect after washing, and further has an appropriate viscosity when used.

Moreover, the liquid cleaning bleach composition obtained by the present invention is
It also has excellent storage stability.

Claims (1)

[Claims] 1. (a) General formula ▲ Numerical formula, chemical formula, table, etc. ▼ (I) (In the formula, R_1 is an alkyl group having 8 to 22 carbon atoms, R_2
, R_3 represents an alkyl group having 1 to 2 carbon atoms, and n represents an integer of 2 to 3. ) 0.01 to 10% by weight of a sulfobetaine type amphoteric surfactant (b) General formula R_4R_5R_6N→O(II) (in the formula,
R_4 is an alkyl group having 8 to 20 carbon atoms, R_5, R_6
represents an alkyl group having 1 to 3 carbon atoms. ) 0.1 to 5% by weight of an amine oxide compound represented by
18 alkyl sarcosine alkali metal salt from 0.1 to
6% by weight (d) 0.5 to 10% by weight of alkali metal hypochlorite
(e) A liquid cleaning bleach composition characterized by containing 0.1 to 10% by weight of a substance exhibiting alkalinity.