JPS6111996B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to an enzyme-containing bleach composition that has an aroma and is comfortable to use. Enzyme-based bleaches whose main ingredients are inorganic peroxides, such as sodium percarbonate, can be used with more fibers than chlorine-based bleaches such as hypochlorous acid, and are more effective against colors and patterns. It has excellent properties such as ease of use and no odor typical of chlorine bleach, and has become widely used. However, oxygen bleach is less effective than chlorine bleach in bleaching various types of stains on clothing, so attempts have been made to improve its bleaching effect, especially on protein, oil, and starch stains that are difficult to remove. proposed the use of enzymes in conjunction with oxygen bleach to remove stains. However, enzymes have a unique odor called enzyme odor, and a problem has arisen in that the odor becomes particularly pronounced when enzymes are stored in the presence of peroxide.
Therefore, it is necessary to add fragrances to mask the enzyme odor and improve the usability, but masking the enzyme odor is difficult, and moreover, the fragrance may interact with enzymes during storage and the fragrance may deteriorate. There was a problem that it decomposed due to peroxide. The present invention has been made in order to solve these problems with enzyme-containing bleach compositions, and provides a fragrance system that has excellent enzyme odor masking properties and that does not change in aroma quality even after long-term storage. An object of the present invention is to provide a bleach composition containing the following. That is, the enzyme-containing bleach composition of the present invention is
In a composition containing an inorganic peroxide, an enzyme, and a fragrance, the fragrance includes both the following group A and B fragrances, and further includes a phenolic fragrance and an aliphatic aldehyde having 8 to 14 carbon atoms. It is characterized by using a mixed fragrance whose total content of fragrance is 3% by weight or less. Group A At least one fragrance selected from the group of monoterpene alcohols, sesquiterpene alcohols, and aromatic alcohols having 7 to 10 carbon atoms. Group B Formic acid ester or acetate ester having 8 to 17 carbon atoms, hydrocarbon having 10 to 15 carbon atoms, and 7 to 15 carbon atoms
At least one fragrance selected from the group of aromatic aldehydes. The present invention will be explained in more detail below. Specific examples of inorganic peroxides include sodium peroxide, sodium perborate, and sodium persulfate. Among these, sodium percarbonate is preferred because it has an excellent bleaching effect at low temperatures. The appropriate amount of inorganic peroxide is 50 to 99.8 wt%, preferably 70 to 95 wt%. Enzymes to be incorporated into the bleach composition of the present invention include hydrolytic enzymes that promote the addition and removal of water, oxidoreductases that promote redox, and enzymes that transfer groups from one molecule to another to remove stains. Transferases that promote denaturation and removal, ligases and lyases that cleave intermolecular bonds and decompose dirt to promote removal, and enzymes that chemically denature dirt and promote removal are suitable. Among them, hydrolytic enzymes are preferred;
Among hydrolases, proteases are particularly preferred. Specific examples of proteases include serine protease, pepsin, trypsin, chymotrypsin, collagenase, keratinase, esterase, subtilisin, papain, carboxypeptidase A and B, and aminopeptidase. It is also available as a product. Alcalase: Novo Industries Co., Ltd. Esperase: Novo Industries Co., Ltd. Viroplase: Nagase Sangyo Co., Ltd. Maxatase: Gist Progedes Co., Ltd. ALD-2: Meiji Seika Co., Ltd. Sperase: Phaizer Co., Ltd. These enzymes are used alone or in combination as bleaching agents. It is blended into the composition, and the blending amount is 0.01 to 5% by weight.
is suitable, preferably 0.1 to 3% by weight. Specific examples of the fragrance of Group A of the present invention include the following, and among these, monoterpene alcohols are preferred in terms of masking properties and stability. (1) Monoterpene alcohols Chain terpene alcohols such as linalool, geraniol, nerol, citronellol, dimethyloctanol, hydroxycitronel, and tetrahydrolinalol, and cyclic terpene alcohols such as α-terpineol, l-menthol, and borneol. (2) Sesquiterpene alcohols fulnesol, nerolidol, santalol, cedrol, vetiverol. (3) _C7-10 aromatic alcohol benzyl alcohol, β-phenylethyl alcohol, cinnamic alcohol, dimethylbenzylcarbinol, dimethylphenylcarbinol. Moreover, the following are illustrated as a specific example of the fragrance|flavor of the B group, Among these, formic acid ester or acetate ester of carbon number 8-17 is preferable from the point of masking property and stability. (1) _C8-17 formic acid or acetate geranyl formate, benzyl formate, phenylethyl formate, citronellyl acetate, geranyl acetate, linalyl acetate, bornyl acetate, terpinyl acetate,
Benzyl acetate, cedryl acetate, acetic acid-pt-
Butylcyclohexyl. (2) _C10-15 hydrocarbons Monoterpene hydrocarbons such as α-pinene, β-pinene, limonene, and terpinolene, and sesquiterpene hydrocarbons such as β-caryorefrein. (3) _C7-15 aromatic aldehyde benzaldehyde, phenyl acetaldehyde, cinnamic aldehyde, α-hexyl cinnamic aldehyde, cyclamen aldehyde, lily aldehyde. These fragrances of group A and fragrances of group B are used together in a composition, and the weight ratio of group A/group B = 9/1 to 1/
It is appropriate to mix them in a ratio of 9/9, preferably 7/3 to 3/7. It is appropriate that the fragrances of Group A and Group B be incorporated in the composition in a total amount of 0.01 to 1 wt%, preferably 0.05 to 0.5 wt%. In the present invention, fragrances are blended such that the total content of phenolic fragrances and aliphatic aldehyde fragrances is 3wt% or less, preferably 2wt% or less of all fragrances to be blended. If this value exceeds 3 wt%, both the masking effect and the aroma stability will decrease. Specific examples of phenolic fragrances include thymol, carvacrol, eugenol, and isoeugenol, and examples of aliphatic aldehyde fragrances include n-octylaldehyde, n-nonylaldehyde, n-decylaldehyde, and n-undecyl. Examples include aldehyde, undecylene aldehyde, dodecyl aldehyde, and n-hexadecyl aldehyde. Furthermore, fragrance ingredients other than those mentioned above can be blended if necessary, and these include aliphatic alcohols such as n-actyl alcohol and n-lauryl alcohol, ketones such as benzophenone, ionone, and methylnaphthyl ketone, and musk-based fragrances. Examples include perfume, methyl benzoate, ethyl benzoate, geranyl benzoate, linalyl benzoate, phenylethyl benzoate, isobutyl phenyl acetate, and the like. The mixed fragrance of the present invention can obtain the desired effect by using one type of each of Group A and Group B together, but it is also possible to obtain the desired effect by blending several or dozens of types of fragrance. It is common to develop a fragrance. As already explained, enzymes are useful in enhancing the stain removal ability of enzymatic bleaches, but on the other hand,
When enzymes are added to enzymatic bleaches, there is a problem in that the enzymes become deactivated during storage and the desired effect cannot be obtained. Therefore, it is preferable to add a storage stabilizer to prevent enzyme deactivation and improve storage stability.
Particularly preferable storage stabilizers are those described in Japanese Patent Application Laid-Open No. 59-129300 (Japanese Patent Application No. 58-3714).
Anhydrous calcium sulfate, calcium sulfate 1/
dihydrate and magnesium sulfate monohydrate, and by blending at least one of these, deactivation of the enzyme can be effectively prevented. In addition, anhydrous aluminum sulfate, anhydrous magnesium chloride, anhydrous sodium citrate, anhydrous calcium chloride, and anhydrous zinc sulfate are also effective stabilizers. Further, anhydrous or monohydrate salts of calcium carbonate, calcium formate, calcium acetate, calcium sulfite 1/2 hydrate, and magnesium acetate tetrahydrate can be used. The appropriate amount of these enzyme stabilizers is 0.1 to 20 wt%, preferably 0.5 to 5 wt%. Additionally, sodium acetate, sodium ascorbate, sodium benzoate, and subsalt chloride may be added to further increase the stability of the aroma. Furthermore, in the composition of the present invention, anionic surfactants, nonionic surfactants,
Various additives such as pigments and fluorescent agents can be added. According to the bleach composition of the present invention, by using a specific fragrance system, even when coexisting with highly active substances such as inorganic peroxides or enzymes,
Enzyme odor masking properties do not deteriorate after long-term storage, and aroma stability does not deteriorate. Example 1 Group A fragrances and Group B fragrances were prepared using the following formulations. Group A fragrance Monoterpene alcohol Linalool 20wt% Geraniol 15wt% Citronellol 15wt% Tetrahydrolinalool 5wt% α-Terpineol 15wt% Sesquiterpene alcohol Cedrol 5wt% Santalol 5wt% C _7-10 aromatic alcohol β-Phenylethyl alcohol 20wt% B Group fragrance C _8-17 Formic acid or acetate ester Geranyl acetate 5wt% Linalyl acetate 15wt% Terpinyl acetate 10wt% Benzyl acetate 25wt% Cedryl acetate 5wt% pt-Butylcyclohexyl acetate 10wt% C _10-15 Hydrocarbon Limonene 10wt% C _7-15 Aromatic aldehyde α-hexyl cinnamic aldehyde 10wt% Cyclamenaldehyde 5wt% Lilyaldehyde 5wt% Then, sodium percarbonate 93.7-93.9wt%, enzyme (Alcalase 2.0T) 1wt% and calcium sulfate 1 as a stabilizer. An enzyme-containing bleach composition is prepared by adding 0.1 to 0.3 wt% of a fragrance containing a group A fragrance, a group B fragrance, or another fragrance shown in Table 1 to 5 wt% of /2 hydrate salt, These samples were stored in sealed plastic containers and stored at 45°C for 30 days, and then evaluated for enzyme odor masking ability and aroma stability. Enzyme odor masking property ◎: Enzyme odor is almost not observed ○: Enzyme odor is slightly observed △: Enzyme odor is observed ×: Enzyme odor is observed considerably Aroma stability 5: Almost no change is observed 4: Slight change observed 3: Change observed 2: Significant change observed 1: Significant change observed

[Table] Reference example: 0.2 wt% of various fragrances shown in Table 2 are added to 93.8 wt% of sodium peroxide, 1 wt% of enzyme (Alcalase 2.0T), and 5 wt% of calcium sulfate 1/2 hydrate as a stabilizer. An enzyme-containing bleach composition was prepared, and these samples were sealed and stored in a plastic container bottle and left to stand at 45°C for 30 days.The enzyme odor masking property and aroma stability were evaluated according to Example 1. It was evaluated. The results are shown in Table 2. As is clear from the results shown in Table 2, fragrances belonging to Group A or Group B have a certain degree of enzyme odor masking ability and aroma stability, although not necessarily sufficient, whereas other fragrances have such effects. can hardly be expected.

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[Table] Example 2 Group A fragrance and B
Example 1 An enzyme-containing bleach composition was prepared by blending 0.2 wt% of mixed fragrances with different combinations of group fragrances.
Enzyme odor masking properties and aroma stability were evaluated in the same manner as above. For comparison, enzyme-containing bleach compositions similar to those above were prepared by combining fragrances from group A and group B, and their enzyme odor masking properties and fragrance stability were also evaluated. The results are shown in Table 3. The results shown in Table 3 show that even if fragrances specified in Group A and Group B are used in the present invention, enzyme odors can be sufficiently masked if the combination is of Group A or Group B. This shows that the desired effect can only be obtained by combining Group A and Group B.

Claims (1)

[Scope of Claims] 1. In a bleach composition containing an inorganic peroxide, an enzyme, and a fragrance, as the fragrance, (A) from the group of monoterpene alcohols, sesquiterpene alcohols, and aromatic alcohols having 7 to 10 carbon atoms; At least one selected fragrance and (B) a formate or acetate having 8 to 17 carbon atoms, a hydrocarbon having 10 to 15 carbon atoms, and 7 carbon atoms.
at least one fragrance selected from the group of ~15 aromatic aldehydes, and the total content of the phenolic fragrance and the aliphatic aldehyde fragrance having 8 to 14 carbon atoms is 3% by weight or less in the fragrance. An enzyme-containing bleach composition characterized by using a mixed fragrance.