JPH08157868A - Enzyme-containing liquid detergent composition - Google Patents

Abstract

PURPOSE: To obtain the subject composition, having high clothes stain-removing effect, excellent in detergency, and effectively prevented from odorous deterioration after preservation, incorporated with a specific nonionic surfactant, protease and a specific fluorescent brightener. CONSTITUTION: This liquid detergent composition contains (A) >=8wt.% of a nonionic surfactant of formula I (R is a 10-16C alkyl or alkenyl; EO is ethylene oxide; PO is propylene oxide; (m) is an EO added number of moles and is, 12-16; (n) is a PO added number of moles and is, 1-3) and a total of 0.1-3wt.% of (B) a protease and (C) a fluorescent brightener of formula II (X is an alkali metal) [e.g. 4,4'-bis(2-sulfostyryl)biphenyl salt] at the weight ratio B/C of 0.3 to 6.0.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an enzyme-containing liquid detergent composition, and more particularly to an enzyme-containing liquid detergent composition for clothes which is excellent in odor stability and detergency. .

[0002]

2. Description of the Related Art Conventionally, it has been well known that a surfactant is mixed with an enzyme such as amylase or protease in order to obtain a detergent composition having a further improved cleaning power against dirt of clothes (Japanese Patent Publication No. 47). -45802, JP-B-48-30646, JP-A-47-3733, JP-A-52-128904, JP-A-53-5.
6024, JP-A-56-129298).

It is also well known to add a fluorescent whitening agent to improve whiteness (Japanese Patent Publication No. 47-2544).
No. 2).

However, although the detergent composition containing these enzymes and the fluorescent whitening agent is recognized to have the effect of improving the detergency, there is a problem that the odor of the detergent composition deteriorates upon storage. Have As a method for solving this problem, there is known a method in which a specific anionic surfactant described in JP-A-63-398 is used and a proteolytic enzyme and a specific optical brightener are mixed in a specific ratio. However, in this method, for example, there is a limit to the amount of the alkaline agent that is a cleaning performance improver to be blended, and the cleaning performance is still insufficient.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an enzyme-containing liquid detergent composition which causes little odor deterioration even when the amount of the alkaline agent is increased in order to exhibit high detergency. .

[0006]

Means for Solving the Problems The inventors of the present invention used a specific nonionic surfactant and mixed a specific optical brightener and a proteolytic enzyme in a specific ratio to deteriorate odor during storage. The inventors have found that it is possible to prevent the above-mentioned problems and have completed the present invention.

That is, the enzyme-containing liquid detergent composition of the present invention contains the following components (a), (b) and (c), and the total amount of the components (b) and (c) is 0. It is in the range of 1 to 3% by weight, and the weight ratio of (b) / (c) is 0.
It is characterized by being in the range of 3 to 6.0. (A) Nonionic surfactant represented by the general formula (1) of the following chemical formula 3: 8% by weight or more.

[0008]

Embedded image R—O (EO) m (PO) nH (1) (R: alkyl group or alkenyl group having 10 to 16 carbon atoms EO: ethylene oxide group, PO: propylene oxide group, m: 12 to 16 Ethylene oxide addition mole number n: Propylene oxide addition mole number in the range of 1 to 3) (b) Proteolytic enzyme. (C) A fluorescent whitening agent represented by the following general formula (2).

[0009]

[Chemical 4] (X: alkali metal)

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The nonionic surfactant as the component (a) used in the liquid detergent composition of the present invention has the general formula (1).
Polyoxyethylene polyoxypropylene alkyl or alkenyl ether obtained by adding 12 to 16 mol of ethylene oxide (EO) and 1 to 3 mol of propylene oxide (PO) to a primary or secondary alcohol having 10 to 16 carbon atoms represented by The method of adding ethylene oxide and propylene oxide is not limited, but it is preferable to add propylene oxide after adding ethylene oxide. The alkyl group or alkenyl group may be linear or branched.

The nonionic surfactant must be contained in the detergent composition in an amount of 8% by weight or more, preferably 9 to 50% by weight. When the blending amount is less than 8% by weight, the performance such as detergency and foaming is deteriorated, which is not preferable.

The proteolytic enzyme as the component (b) is "Savinase (Savinas) manufactured by Novo Industry Co., Ltd.
e) ”,“ Alcalase ”,“ Esperase ”,“ Durazyme ”,“ Maxapem ”,“ Maxapem ”manufactured by Gist Brokers, Inc.
x)), “Bioprase” manufactured by Nagase Seikagaku Co., Ltd., etc., and these may be used alone or in combination of two or more kinds.

The optical brightening agent as the component (c) is a 4,4'-bis (2-sulfostyryl) biphenyl salt represented by the general formula (2). These may be used alone or in combination of two or more.

The blending amounts of the components (b) and (c) are
The total amount of the components (b) and (c) is in the range of 0.1 to 3% by weight, and the weight ratio of (b) / (c) is 0.3 to.
It is selected to be in the range of 6.0. Moreover, the preferable range of this total compounding amount is 0.5 to 2% by weight. (B)
When the total amount of the component and the component (c) is less than 0.1% by weight, the detergency and the fluorescent whitening property are insufficient, and the whiteness in appearance is insufficient. On the other hand, if it exceeds 3% by weight, the odor stability deteriorates. Furthermore, when the weight ratio of the components (b) / (c) deviates from the range of 0.3 to 6.0, the odor stability deteriorates.

Further, the liquid detergent composition of the present invention may contain an alkanolamine such as monoethanolamine, diethanolamine, triethanolamine or the like as an alkaline agent, and other inorganic alkaline agents such as alkali. A metal carbonate, an alkali metal silicate, an alkali metal hydroxide or the like can be blended. The alkaline agent is preferably added to the liquid detergent composition of the present invention in an amount of 2 to 20% by weight, and preferably 5 to 16% by weight.

The liquid detergent composition of the present invention may further contain other nonionic surfactants or anionic surfactants for the purpose of further improving detergency, enhancing foaming performance and facilitating rinsing. It can be blended. As the nonionic surfactant used at this time, for example, polyoxyethylene alkyl ether, polyoxyethylene polyoxypropylene alkyl ether other than the component (a), alkylamine oxide and the like are suitable.

Further, since the anionic surfactant tends to deteriorate the stability of the enzyme, it is blended within a range that does not adversely affect the enzyme. Examples of the anionic surfactant used in this case include alkylbenzene sulfonate, higher fatty acid salt, polyoxyethylene alkyl sulfate ester salt, alkyl sulfate ester salt, and α-olefin sulfonate.

Further, in the liquid detergent composition of the present invention, various additives usually used in detergent compositions, for example, hydrotropes such as lower alcohols, polyhydric alcohols and lower aryl sulfonates, A benzoate, an antiseptic such as an isothiazolone compound, a rinse enhancer such as silicone, an accidental ingestion agent such as a bitterness / emetic agent, a calcium salt, a pigment, a fragrance, an antioxidant and the like can be added as required.

[0019]

According to the present invention, a specific nonionic surface active agent is used as a surface active agent, and a proteolytic enzyme and a specific optical brightening agent are added by defining the total amount and blending ratio. It is possible to realize an enzyme-containing liquid detergent composition which has a great effect of removing stains on clothes and is excellent in detergency and which effectively prevents deterioration of odor after storage.

[0020]

EXAMPLES Next, the present invention will be described in more detail by way of examples, but the present invention is not limited to the following examples.

<< Testing Method for Detergency >> US. Testing
Terg-O-Tometer of the company is used as a cleaning device, and 10 pieces of protein-containing wet artificial dirt cloth, sebum cloth, and clean knit cloth are put into this and the bath ratio is 30 times, and 1
Wash for 10 minutes at 20 rpm and 25 ° C. As the cleaning liquid, 900 mL of a cleaning agent concentration of 0.067% is used, and rinsing is performed with 900 mL of water for 3 minutes. The water used was 3 degrees DH. The detergency was calculated by the following formula 1.

[0022]

[Equation 1] K / S = (1-R / 100) ² / (2R / 100) R is reflectance (%)

The main detergency is oil chemistry 30, 432
(1981) “Study on new artificial soil cloth (No. 1
News) ”.

<Odor> 1 mL of 50 mL of the test detergent composition
It is put in a glass bottle of 00 mL, sealed, and stored at 50 ° C. for 1 month, then returned to room temperature, the stopper is removed, and a change in odor is judged sensory by using a room temperature storage product as a control. Judgment Criteria ○: Equal to or slightly different from the room temperature stored product Δ: Clearly different from the room temperature stored product ×: Remarkably different from the room temperature stored product Other than ○ in the above standard is a problem in commercial value.

Example A liquid detergent composition having the composition shown in Tables 1 and 2 was prepared and its performance was evaluated. The contents of abbreviations in the table are as follows. Diadol 13 (EO) ₁₄ (PO) ₂ H: Diad
Polyoxyethylene polyoxypropylene alkyl ether obtained by adding an average of 14 mol of ethylene oxide to ol 13 and then adding an average of 2 mol of propylene oxide. D
iadol 13 is a branched higher synthetic alcohol having a carbon number of 13 as a main component (linear rate 60%) (Mitsubishi Chemical Corporation)
Manufactured) Myristyl alcohol (EO) ₁₃ (PO) ₂ H: Polyoxyethylene oxypropylene alkyl ether TINOPEARL CBS: 4,4′-, which is obtained by adding an average of 13 mol of ethylene oxide to myristyl alcohol and then adding an average of 2 mol of propylene oxide. Bis (2-sulfostyryl) biphenyl disodium, manufactured by Ciba Geigy

[0026]

[Table 1] Table 1: Example 1 2 3 4 5 Composition (wt%) Diadol 13 (EO) ₁₄ (PO) ₂ H 45 − 45 15 45 Myristyl alcohol (EO) ₁₃ (PO) ₂ H − 45 − − − Diethanolamine 10 10 10 10 10 Diadol 13 (EO) ₇ H − − − 30 − Maxapem L30 0.5 − 1.5 0.9 0.5 Durazyme 16L − 0.2 − − 0.4 Chinopearl CBS 0.1 0.5 0.3 0.3 0.3 Ethanol 8.0 8.0 8.0 8.0 8.0 Perfume 0.2 0.2 0.2 0.2 0.2 Water balance (c) + (d) (wt%) 0.6 0.7 1.8 1.2 1.2 (c) / (d) (wt ratio) 5.0 0.4 5.0 3.0 3.0 Evaluation smell ○ ○ ○ ○ ○ Detergency ( %) 71 70 75 73 73

[0027]

[Table 2] Table 2: Comparative Example 6 7 8 9 Composition (wt%) Diadol 13 (EO) ₁₄ (PO) ₂ H 45 45 45 15 Myristyl alcohol (EO) ₁₃ (PO) ₂ H --- Diethanolamine 10 10 10 10 Diadol 13 (EO) ₇ H − − − − Maxapem L30 3.0 2.1 0.02 0.1 Durazyme 16L − − − − Chinopearl CBS 0.6 0.3 0.05 0.7 Ethanol 8.0 8.0 8.0 8.0 Perfume 0.2 0.2 0.2 0.2 Water balance (c ) + (d) (wt%) 3.6 2.4 0.07 0.8 (c) / (d) (wt ratio) 5.0 7.0 0.4 0.14 Evaluation odor × × ○ △ Detergency (%) 75 75 65 68

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[Procedure amendment]

[Submission date] March 20, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0025

[Correction method] Change

[Correction content]

Example A liquid detergent composition having the composition shown in Tables 1 and 2 was prepared and its performance was evaluated. The contents of abbreviations in the table are as follows. Diadol 13 (EO) ₁₄ (PO) ₂ H: Diad
Polyoxyethylene polyoxypropylene alkyl ether obtained by adding an average of 14 mol of ethylene oxide to ol 13 and then adding an average of 2 mol of propylene oxide. D
iadol 13 is a branched higher synthetic alcohol having a carbon number of 13 as a main component (linear rate 60%) (Mitsubishi Chemical Corporation)
Ltd.) myristyl alcohol _{(EO) 13 (PO) 2} H: the ethylene oxide millimeter scan <br/> chill alcohol after averaging 13 mol adduct, polyoxyethylene polyoxypropylene alkyl ether and averaged 2 mols of propylene oxide Tinopal CBS : 4,4'-bis (2-sulfostyryl) biphenyl disodium, manufactured by Ciba Geigy

Claims (1)

[Claims] 1. A nonionic surfactant represented by the following general formula (1) represented by the general formula (1): 8% by weight or more. Embedded image R—O (EO) m (PO) nH (1) (R: alkyl or alkenyl group having 10 to 16 carbon atoms EO: ethylene oxide group PO: propylene oxide group m: ethylene oxide addition mole number in the range of 12 to 16 n: propylene oxide addition mole number in the range of 1 to 3) ( b) Proteolytic enzyme (c) Optical brightener represented by the general formula (2) of the following chemical formula 2 (X: alkali metal) is contained, and the total amount of the components (b) and (c) is in the range of 0.1 to 3% by weight,
An enzyme-containing liquid detergent composition having a weight ratio of (b) / (c) in the range of 0.3 to 6.0.