JPS5851999B2 - bleach composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a novel bleach composition, more specifically, a bleach composition containing a hydrogen peroxide adduct and an activator, and which is stable for a long period of time without producing any irritating odor such as an organic acid odor. The present invention relates to a bleach composition that can be stored in

Conventionally, hydrogen peroxide adducts such as sodium perborate, sodium percarbonate, sodium peroxide pyrophosphate, and urea peroxide have been used as oxygen-based bleaching agents. It is used in combination with drugs.

Further, in order to increase the effectiveness of these bleaching agents when used, it is preferable to use an activator in combination.

Therefore, it is convenient for use to combine the hydrogen peroxide adduct and the activator into one composition, but if they are simply mixed mechanically, the presence of a small amount of water may be avoided. However, it also decomposes, resulting in the production of water, which has the disadvantage of further promoting decomposition.

In order to overcome the instability caused by such decomposition, there is a method of coating one or both of the hydrogen peroxide adduct and the activator with a coating agent to minimize contact between the two, or a method of contact-blending the two. Research has been conducted to develop hydrogen peroxide adducts or activators that do not cause decomposition.

As a result, it was found that a hydrogen peroxide adduct having a structure of 4Na2SO4-2H202-NaCl has particularly excellent coexistence with an activator.

However, 4Na2SO4・2H202・NaCl
Bleach mixtures of hydrogen peroxide and activators are more stable than conventional bleach mixtures of hydrogen peroxide adducts and activators; Some decomposition is unavoidable during storage.

However, even this slight decomposition causes the activator to emit a pungent organic acid odor, particularly an acetic acid odor, which significantly reduces its commercial value.

Therefore, the inventor of the present invention conducted extensive research to resolve these drawbacks, and found that by adding sodium percarbonate to the above mixture, a bleaching agent with significantly improved odor and long-term stability could be obtained. , completed the invention.

That is, the present invention provides 4Na2SO4・2H202・N
The present invention provides a stable bleach composition containing a hydrogen peroxide adduct having the structure of aCIJ, an activator, and sodium percarbonate.

The activators used in the present invention include glucose pentaacetate, octaacetylsu'70-su,
O-acylated products such as triacetin, sorbitol hexaacetate, acetoxybenzenesulfonate or triacetyl cyanuric acid; N-acylated products such as tetraacetylethylenediamine or tetraacetylglycolyluril; and phthalic anhydride, succinic anhydride. Examples include acid anhydrides such as those that react with hydrogen peroxide in an aqueous solution to produce organic peracids.

Sodium percarbonate is represented by 2Na2CO3.3H202, but foamable sodium percarbonate obtained by foaming this by further heating can also be used.

Although this foaming sodium percarbonate salt is not limited, the heating temperature is 75 to 135°C, and the heating time is 2 to 6 hours at 75°C, and 5 to 30 minutes at 135°C, because the loss of active oxygen is small. preferable.

Therefore, the stabilizing effect in the present invention is specific to sodium percarbonate, and as shown in the Examples below, this effect is not observed with other inorganic salts and hydrogen peroxide adducts.

The bleach composition of the present invention is produced by mixing the above three components in arbitrary proportions, but considering storage stability, bleaching effect, and economical efficiency,
2.NaC/! is 5 to 90% by weight (hereinafter simply referred to as %), especially 30 to 80%, the activator is 1 to 40%, especially 3 to 30%, and the sodium percarbonate is 0.5 to 30%, especially 0. It is preferable to mix it in a range of 5 to 5%.

In addition to the above three components, the bleach composition of the present invention may also contain various surfactants, other inorganic peroxides, inorganic or organic builders, re-staining inhibitors, fragrances, pigments, and fluorescent dyes. etc. can be added and blended.

As surfactants, anionic surfactants such as sodium alkylbenzene sulfonate, sodium alpha olefin sulfonate, sodium alkanesulfonate, higher fatty acid sl-IJum salt, and higher fatty acid cusethionic acid sodium salt; polyoxyethylene alkyl ether; Non-ionic surfactants such as polyoxyethylene alkylphenyl ethers can be used; builders include sodium sulfate, sodium carbonate, sodium bicarbonate, sodium silicate, sodium tripolyphosphate, sodium citrate, sodium gluconate, disodium oxydi Examples include those commonly used in detergents, such as acetate, EDTA, DTPA, sodium salt of HEDTA, and sodium polymaleate.

Average molecular weight 1,000-20.0 as a re-staining prevention agent
00 polyethylene glycol, carboxymethyl cellulose, polyvinyl alcohol, polyvinylpyrrolidone, etc. are used.

In the bleach composition of the present invention, the above three components may be mixed in the form of fine powder, but in order to prevent the fine powder from scattering and to improve fluidity, each component may be mixed into granules by means such as granulation. It is preferable to

Next, an example will be given and explained.

Example 1 Glucose pentaacetate and 4Na2SO4.2
Various inorganic salts or hydrogen peroxide adducts were added and mixed to 90 parts of a mixture of H202/N a C13 at a ratio of 20:80.

After this mixture was stored at 40° C. for one month, the residual amount of effective oxygen was measured and the odor was examined.

The results are shown in Table 1. Example 2 An experiment was conducted in the same manner as in Example 1 except that octaacetyl sucrose was used instead of glucose pentaacetate, and the results shown in Table 2 were obtained.

Example 3 Sorbitol hexaacetate and 4Na2SO4.2
85 parts of H202/NaCl mixed at a ratio of 20:80, cleaning active ingredient (90% sodium dodecyl sulfate)
, sodium sulfate 5%, water 5%) and 10 parts of the inorganic salt or hydrogen peroxide adduct shown in Table 3 were mixed.
It was stored at ℃ for 1 month.

The results are shown in Table 3.

Example 4 A bleach composition having the following composition was stored at 40°C for one month, and the quantitative effect of sulfur percarbonate was investigated.

The results are shown in Table 4.

Composition: 4Na2S04"2H202"NaCl 50
%Tetraacetylglycolyluril 20% Sodium percarbonate X %

Claims (1)

[Scope of Claims] A bleach composition containing a hydrogen peroxide adduct having a structure of 14Na2SO4.2H202.NaCl, an activator, and sulfur percarbonate. 2. The bleach composition of claim 1, wherein the activator is selected from the group consisting of glucose pentaacetate, octaacetyl sucrose, sorbitol hexaacetate, and tetraacetyl glycolyluril. 3. The bleach composition according to claim 1 or 2, wherein the percarbonate is foamable sodium percarbonate. 44Na2SO4.2H202.NaCl 3-90% by weight, activator 1-40% by weight and sodium percarbonate 0.
A bleach composition according to any one of claims 1 to 3, containing 5 to 30% by weight. 5. The bleach composition according to claim 4, wherein the content of sodium percarbonate is 0.5 to 5% by weight.