JP6498734B2 - Cleaning composition, cleaning agent, and cleaning method - Google Patents

Description

  The present invention relates to a cleaning composition, a cleaning agent, and a cleaning method.

  Conventionally used in food processing factories, beverage factories, dairy factories, beer factories, etc., food and beverage equipment (for example, outer surfaces of production equipment such as food and beverage production equipment, filling machines, blending tanks, freezers, conveyors for conveyance) , Floors, etc.) foaming detergent compositions are used.

  For example, Patent Document 1 discloses a foam cleaning for a food and beverage product manufacturing facility that includes a predetermined amount of an alkali agent, an anionic surfactant, an alkyldimethylamine oxide, an aromatic sulfonate, a water-soluble calcium compound, and a sequestering agent. An agent composition is disclosed.

  The foaming detergent composition for food and beverage product manufacturing equipment described in Patent Document 1 has excellent foam retention and cleaning properties, and is not corrosive to aluminum materials without causing whitening on the surface to be cleaned. It is said that.

JP 2010-150307 A

  As a result of investigations by the present inventors, for example, when a conventional cleaning composition as disclosed in Patent Document 1 is mixed with dilution water to obtain a foamed cleaning composition, the foaming power and retention of the cleaning composition Although it has improved properties, when it contains a chlorinated oxidant such as hypochlorite, it is stored for a long time in a high temperature environment in summer (for example, about a month in a high temperature environment of about 40 ° C.). It was revealed that the chlorine stability in a high temperature environment was insufficient, such as the effective chlorine concentration of the cleaning composition decreased. When the effective chlorine concentration of the cleaning agent decreases, there is a problem that the cleaning power and bleaching power decrease.

  In addition, it has been clarified that, when stored in such a high temperature environment for a long period of time, problems such as the generation of gas from the cleaning composition and the expansion of the storage container may occur. In particular, when heavy metal ions such as Ni derived from the blended raw material coexist in the sodium hypochlorite aqueous solution, gas is remarkably generated during high temperature storage, causing problems such as container deformation and liquid leakage. Therefore, it has been required to cope with such a situation in transportation conditions.

  The present invention provides a foaming detergent mixed with diluting water, exhibits excellent foaming power and retention, and is excellent in chlorine stability when stored for a long time in a high temperature environment. It is a main object to provide a cleaning composition having a high storage stability in which the generation of water is suppressed. Another object of the present invention is to provide a cleaning agent and a cleaning method using the cleaning composition. Another object of the present invention is to provide a cleaning method in a high temperature environment.

  The present inventors have intensively studied to solve the above problems. As a result, (A) an alkali agent, (B) an anionic surfactant, (C) an alkyldimethylamine oxide having an alkyl group or alkylene group having 8 to 18 carbon atoms, and (D) an aromatic carboxylic acid or A cleaning composition comprising a salt thereof, (E) a chlorine-based oxidizing agent, (F) a phosphonoalkanetricarboxylic acid or a salt thereof, and (G) an alkaline earth metal salt, wherein (D) an aromatic The content of carboxylic acid or a salt thereof is 0.5 to 12.0% by mass, and the content of (F) phosphonoalkanetricarboxylic acid or a salt thereof is 0.05 to 1.8% by mass, (H) A detergent composition containing water exhibits excellent foaming power and retention when mixed with diluting water and foamed into a detergent, and is stored for a long time in a high temperature environment. Excellent chlorine stability and gas generation suppression effect It was found to be exhibited. The present invention has been completed by further studies based on these findings.

That is, this invention provides the invention of the aspect hung up below.
Item 1.
(A) an alkaline agent;
(B) an anionic surfactant;
(C) an alkyldimethylamine oxide having an alkyl group or alkylene group having 8 to 18 carbon atoms;
(D) an aromatic carboxylic acid or a salt thereof;
(E) a chlorine-based oxidant;
(F) phosphonoalkanetricarboxylic acid or a salt thereof;
(G) an alkaline earth metal salt;
(H) water and
Including
Content of said (D) aromatic carboxylic acid or its salt is 0.5-12.0 mass%,
The cleaning composition whose content of the said (F) phosphonoalkanetricarboxylic acid or its salt is 0.05-1.8 mass%.
Item 2. Item 2. The cleaning agent according to Item 1, wherein the mass ratio of the (D) aromatic carboxylic acid or salt thereof to the (F) phosphonoalkanetricarboxylic acid or salt thereof is in the range of 1: 4 to 100: 1. Composition.
Item 3. Item 3. The cleaning composition according to Item 1 or 2, comprising the (E) chlorine-based oxidizing agent in an amount such that an effective chlorine concentration in the cleaning composition is 0.1 to 7.0% by mass.
Item 4. Item 4. The cleaning composition according to any one of Items 1 to 3, which is used for cleaning food and beverage production equipment.
Item 5. Item 5. The cleaning composition according to any one of Items 1 to 4, wherein a content of the (H) water is 60 to 90% by mass.
Item 6. A cleaning agent comprising 2 to 40% by mass of the cleaning composition according to any one of Items 1 to 5 and 60 to 98% by mass of dilution water.
Item 7. Item 7. The cleaning agent according to Item 6, which is in a foamed form.
Item 8. The step of preparing the cleaning agent by mixing the cleaning agent composition according to any one of Items 1 to 5 and dilution water;
Foaming the cleaning agent and attaching it to the object to be cleaned;
Rinsing the cleaning agent adhering to the object to be cleaned with rinse water;
A cleaning method comprising:

  According to the present invention, when a foamed cleaning agent is mixed with dilution water, it exhibits excellent foaming power and retention, and excellent chlorine stability when stored for a long time in a high temperature environment And the cleaning composition which exhibits a gas generation inhibitory effect can be provided. Furthermore, according to the present invention, it is possible to provide a cleaning agent and a cleaning method using the cleaning composition.

  The cleaning composition of the present invention comprises (A) an alkali agent, (B) an anionic surfactant, (C) an alkyldimethylamine oxide having an alkyl group or alkylene group having 8 to 18 carbon atoms, and (D A cleaning composition comprising:) an aromatic carboxylic acid or a salt thereof; (E) a chlorine-based oxidant; (F) a phosphonoalkanetricarboxylic acid or a salt thereof; and (G) an alkaline earth metal salt. , (D) the content of aromatic carboxylic acid or a salt thereof is 0.5 to 12.0% by mass, and (F) the content of phosphonoalkanetricarboxylic acid or a salt thereof is 0.05 to 1. It is 8 mass%, (H) It contains water, It is characterized by the above-mentioned. Since the cleaning composition of the present invention has such a configuration, when the cleaning composition is foamed by mixing with dilution water, it exhibits excellent foaming power and retention, and further has a high temperature. Excellent chlorine stability and gas generation suppression effect can be exhibited when stored (including transportation environment) for a long period (for example, about one month) in an environment (for example, about 30 to 50 ° C.). Hereinafter, the cleaning composition and the cleaning method and cleaning method using the cleaning composition of the present invention will be described in detail.

(Cleaning composition)
The cleaning composition of the present invention contains the above-mentioned components (A) to (H), and as described later, when used for cleaning an object to be cleaned, the cleaning composition is further diluted with diluting water. Used as a cleaning agent. The cleaning agent prepared from the cleaning composition of the present invention is used for cleaning an object to be cleaned in a foamed form using a foam cleaning machine. That is, the cleaning composition of the present invention can be referred to as a foam cleaning composition. Further, the cleaning agent of the present invention can be referred to as a foaming cleaning agent.

  The cleaning composition of the present invention contains an alkaline agent as the component (A). (A) The alkali agent is not particularly limited as long as it can be used in the cleaning composition, and examples thereof include potassium hydroxide and sodium hydroxide. When the detergent composition is mixed with diluting water to obtain a foamed detergent, it exhibits excellent foaming power and retention, and is excellent when the detergent composition is stored in a high temperature environment for a long period of time. From the viewpoint of exhibiting chlorine stability and gas generation suppression effect, potassium hydroxide is more preferable.

  (A) As an alkaline agent, only 1 type may be used and 2 or more types may be mixed and used.

  The content of the alkali agent (A) in the cleaning composition of the present invention is not particularly limited, but when the cleaning composition is mixed with dilution water to obtain a foamed cleaning agent, excellent foaming power From the viewpoint of exhibiting excellent chlorine stability and gas generation inhibiting effect when the cleaning composition is stored for a long time in a high temperature environment, preferably 0.1 to 15.0 mass %, More preferably, about 1.0-10.0 mass%, More preferably, about 2.0-8.0 mass% is mentioned.

  The cleaning composition of the present invention contains an anionic surfactant as the component (B). (B) The anionic surfactant is not particularly limited as long as it can be used in the detergent composition. For example, sodium secondary alkanesulfonate having 13 to 17 carbon atoms, 2 having 13 to 17 carbon atoms, and the like. Examples include potassium primary alkanesulfonate, sodium linear alkylbenzene sulfonate having 10 to 14 carbon atoms, and potassium linear alkylbenzene sulfonate having 10 to 14 carbon atoms. Among these, when the detergent composition is mixed with dilution water to obtain a foamed detergent, it exhibits excellent foaming power and retention, and further, the detergent composition is stored in a high temperature environment for a long period of time. From the viewpoint of exhibiting excellent chlorine stability and gas generation suppressing effect in some cases, secondary alkane sulfonate having 13 to 17 carbon atoms is preferable. Commercially available products of secondary sodium alkanesulfonate having 13 to 17 carbon atoms include product name “Hostapua SAS30” manufactured by Clariant Japan.

  As the component (B), only one type may be used, or two or more types may be mixed and used.

  The content of the (B) anionic surfactant in the cleaning composition of the present invention is not particularly limited. However, when the cleaning composition is mixed with diluting water to obtain a foamed cleaning agent, an excellent starter is obtained. From the viewpoint of exhibiting foaming power and retention, and further exhibiting excellent chlorine stability and gas generation suppression effect when the cleaning composition is stored in a high temperature environment for a long period of time, preferably 0.5 to 5. About 0 mass%, More preferably, it is about 1.0-5.0 mass%, More preferably, about 2.0-4.0 mass% is mentioned.

  The cleaning composition of the present invention contains an alkyldimethylamine oxide having an alkyl group or alkylene group having 8 to 18 carbon atoms as the component (C). (C) Alkyldimethylamine oxide is not particularly limited as long as it has an alkyl group or alkylene group having 8 to 18 carbon atoms and can be used in a detergent composition. When the detergent composition is mixed with diluting water to obtain a foamed detergent, it exhibits excellent foaming power and retention, and is excellent when the detergent composition is stored in a high temperature environment for a long period of time. From the viewpoint of exhibiting the chlorine stability and gas generation suppressing effect, alkyldimethylamine oxide having an alkyl group or alkylene group having 10 to 18 carbon atoms is preferable, and having an alkyl group or alkylene group having 12 to 18 carbon atoms. Alkyldimethylamine oxide is more preferable, alkyldimethylamine oxide having an alkyl group having 8 carbon atoms (specifically, dimethyloctylamine N-oxide), alkyldimethylamine oxide having an alkyl group having 14 carbon atoms (specifically In particular, dimethyl myristylamine N-oxide) is particularly preferable. Furthermore, it is preferable to use dimethyloctylamine N-oxide and dimethylmyristylamine N-oxide in combination. When dimethyloctylamine N-oxide and dimethylmyristylamine N-oxide are used in combination, about 0.5 to 10 parts by mass of dimethylmyristylamine N-oxide is used with respect to 1 part by mass of dimethyloctylamine N-oxide. It is preferable to use about 1 to 6 parts by mass. Further, the content of dimethyloctylamine N-oxide is preferably 1.0% by mass or less, and more preferably 0.6% by mass or less.

As the component (C), only one type may be used, or two or more types may be mixed and used.

  The content of (C) alkyl dimethylamine oxide having an alkyl group having 8 to 18 carbon atoms or an alkylene group in the cleaning composition of the present invention is not particularly limited, but the cleaning composition is mixed with dilution water. In the case of a foamed cleaning agent, it exhibits excellent foaming power and retention, and also has excellent chlorine stability and gas generation suppression effect when the cleaning composition is stored for a long time in a high temperature environment. From the standpoint of exhibiting, it is preferably about 0.5 to 5.0% by mass, more preferably about 1.0 to 5.0% by mass, and still more preferably about 2.0 to 4.0% by mass.

  The cleaning composition of the present invention contains an aromatic carboxylic acid or a salt thereof as the component (D). (D) As aromatic carboxylic acid or its salt, if it can be used for a cleaning composition, it will not restrict | limit in particular.

(D) Specific examples of aromatic carboxylic acids or salts thereof include benzoic acid, salicylic acid, phthalic acid, and salts of these aromatic carboxylic acids. Among these, when the detergent composition is mixed with dilution water to obtain a foamed detergent, it exhibits excellent foaming power and retention, and further, the detergent composition is stored in a high temperature environment for a long period of time. Benzoic acid or a salt thereof is particularly preferable from the viewpoint of exhibiting excellent chlorine stability and gas generation suppression effect.

  In the component (D), examples of the salt include alkali metal salts such as potassium and sodium, and alkaline earth metal salts such as magnesium and calcium. Among these, alkali metal salts are preferable, and sodium salts are more preferable.

  As the component (D), only one type may be used, or two or more types may be mixed and used.

  In the cleaning composition of the present invention, the content of (D) the aromatic carboxylic acid or a salt thereof is in the range of 0.05 to 12.0 mass%. In the cleaning composition of the present invention, all of the components (A) to (G) are included, and the content of the component (D) and the content of the component (F) described below are within a predetermined range. When the detergent composition is mixed with diluting water to obtain a foamed detergent, it exhibits excellent foaming power and retention, and when the detergent composition is stored for a long time in a high temperature environment. Excellent chlorine stability and gas generation suppression effect can be exhibited. That is, the cleaning composition of the present invention can exhibit excellent cleaning power as a foamed cleaning agent even after being stored for a long time in a high temperature environment.

  (D) As content of aromatic carboxylic acid or its salt, Preferably it is about 0.5-10.0 mass%, More preferably, it is about 1.0-8.0 mass%, More preferably, it is 2.0- About 6.0 mass% is mentioned.

  The cleaning composition of the present invention contains a chlorine-based oxidizing agent as the component (E). (E) The chlorine-based oxidizing agent is not particularly limited as long as it can be used in the cleaning composition. However, when the cleaning composition is mixed with diluting water to obtain a foamed cleaning agent, excellent foaming is achieved. Chlorous acid such as sodium chlorite from the viewpoint of exerting power and retention, and also exhibiting excellent chlorine stability and gas generation suppression effect when the cleaning composition is stored for a long time in a high temperature environment. Salts, hypochlorites such as sodium hypochlorite, chlorates such as sodium chlorate, perchlorates such as sodium perchlorate, and chlorinated cyanurates such as sodium dichloroisocyanurate, Among these, sodium hypochlorite or potassium hypochlorite is particularly preferable.

  As the component (E), only one type may be used, or two or more types may be mixed and used.

  In the cleaning composition of the present invention, (E) the chlorine-based oxidizing agent may be contained in the cleaning composition in an amount of about 0.1 to 7.0% as the effective chlorine concentration in the cleaning composition. Preferably, about 0.1 to 6.0% is contained. The method for measuring the effective chlorine concentration of the cleaning composition is as described in the examples.

  The cleaning composition of the present invention contains phosphonoalkanetricarboxylic acid or a salt thereof as the component (F). (F) The phosphonoalkanetricarboxylic acid or a salt thereof is not particularly limited as long as it can be used in the cleaning composition, but when the cleaning composition is mixed with dilution water to obtain a foamed cleaning composition, From the viewpoint of exhibiting excellent foaming power and retention, and further exhibiting excellent chlorine stability and gas generation suppression effect when the cleaning composition is stored in a high temperature environment for a long period of time, preferably 2- Examples include sodium phosphonobutane-1,2,4-tricarboxylate and potassium 2-phosphonobutane-1,2,4-tricarboxylate.

  As the component (F), only one type may be used, or two or more types may be mixed and used.

  In the cleaning composition of the present invention, the content of (F) phosphonoalkanetricarboxylic acid or a salt thereof is in the range of 0.05 to 1.8% by mass. As described above, in the cleaning composition of the present invention, all components (A) to (G) are included, and the content of component (D) and the content of component (F) are within a predetermined range. As a result, when the detergent composition is mixed with dilution water to obtain a foamed detergent, it exhibits excellent foaming power and retention, and further, the detergent composition is stored in a high temperature environment for a long period of time. Excellent chlorine stability and gas generation suppression effect can be exhibited. That is, the cleaning composition of the present invention can exhibit excellent cleaning power as a foamed cleaning agent even after being stored for a long time in a high temperature environment.

  (F) As content of phosphonoalkanetricarboxylic acid or its salt, Preferably it is about 0.05-1.8 mass%, More preferably, it is about 0.5-1.6 mass%, More preferably, it is 1.0. About -1.5 mass% is mentioned.

  When the detergent composition is mixed with dilution water to make a foamed detergent, it exhibits excellent foaming power and retention, and moreover, when the detergent composition is stored in a high temperature environment for a long time, From the viewpoint of exhibiting more excellent chlorine stability and gas generation suppression effect, the mass ratio of (D) aromatic carboxylic acid or salt thereof to (F) phosphonoalkanetricarboxylic acid or salt thereof ((D) component Mass: mass of the component (F) is preferably in the range of 1: 4 to 100: 1, more preferably in the range of 1: 3 to 20: 1, and 1: 2 to 2: 1. More preferably, it is in the range.

  The cleaning composition of the present invention contains an alkaline earth metal salt as the component (G). (G) The alkaline earth metal salt is not particularly limited as long as it can be used in the cleaning composition, but when the cleaning composition is mixed with diluting water to obtain a foamed cleaning agent, an excellent starting point is obtained. From the viewpoint of exerting foaming power and retention, and further exhibiting excellent chlorine stability and gas generation suppression effect when the cleaning composition is stored for a long time in a high temperature environment, calcium chloride, calcium bromide, iodine Calcium chloride, calcium nitrate, calcium acetate, calcium lactate, calcium tartrate malate, calcium gluconate and the like can be mentioned, among which calcium chloride and calcium acetate are preferably used.

  As the component (G), only one type may be used, or two or more types may be mixed and used.

  The content of the alkaline earth metal salt (G) in the cleaning composition of the present invention is not particularly limited, but it is excellent when the cleaning composition is mixed with dilution water to obtain a foamed cleaning composition. From the viewpoint of exhibiting foaming power and retention, and further exhibiting excellent chlorine stability and gas generation suppression effect when the cleaning composition is stored in a high temperature environment for a long period of time, preferably 0.05 to 5 About 0.0% by mass, more preferably about 0.1 to 3.0% by mass, further preferably about 0.1 to 1.0% by mass, and still more preferably about 0.1 to 0.5% by mass. It is done.

  The cleaning composition of the present invention contains water as the component (H). The water is not particularly limited, and examples thereof include tap water, distilled water, pure water, and ion exchange water. Moreover, the water derived from said (A) component-(G) component can also be contained in (H) component of the cleaning composition of this invention.

  The content of (H) water in the cleaning composition of the present invention is not particularly limited. When the detergent composition is mixed with diluting water to obtain a foamed detergent, it exhibits excellent foaming power and retention, and is excellent when the detergent composition is stored in a high temperature environment for a long period of time. From the viewpoint of exhibiting the chlorine stability and gas generation suppressing effect, the content of (H) water in the cleaning composition of the present invention is preferably about 60 to 90% by mass, more preferably 70 to 85% by mass. About, More preferably, about 75-85 mass% is mentioned.

  The cleaning composition of the present invention can be used to clean perfume, dyes, preservatives, metal corrosion inhibitors, solubilizers, antifoaming agents, sequestering agents, polymer compounds, cloud point improvers, etc. A known additive to be added to the agent composition may be included. Only one type of additive may be used, or two or more types may be mixed and used.

  When the said additive is contained in the cleaning composition of this invention, as the content, 5 mass% or less, for example, Preferably 2 mass% or less is mentioned.

  The manufacturing method of the cleaning composition of the present invention is not particularly limited, and the components (A) to (H), and further, the additives added as necessary are uniformly dispersed. It can manufacture by mixing using stirrers, such as a mixer.

  Although the washing | cleaning use of the cleaning composition of this invention is not restrict | limited in particular, For example, the food-drinks equipment (for example, food-beverage manufacturing equipment, filling) currently used in a food processing factory, a drink factory, a dairy factory, a beer factory etc. It can be particularly suitably used for cleaning the outer surface of a manufacturing facility such as a machine or a mixing tank, a freezer, a conveyor for conveyance, a floor or the like.

(Washing soap)
The cleaning agent of the present invention is obtained by mixing the above-described cleaning composition of the present invention with dilution water. The detergent of the present invention preferably contains about 2 to 40% by mass of the above-mentioned detergent composition and about 60 to 98% by mass of diluted water from the viewpoint of exhibiting excellent foaming power and retention. . Moreover, it is more preferable that they are about 10-35 mass% cleaning composition and about 65-95 mass% dilution water, About 15-25 mass% cleaning composition, and about 75-85 mass%. More preferably, it is diluted water. In addition, it does not restrict | limit especially as dilution water, A tap water, distilled water, a pure water, ion-exchange water etc. are mentioned.

  The cleaning agent of the present invention is applied to an object to be cleaned in a foamed form using a foam washer and is used for cleaning the object to be cleaned. A specific cleaning method using the cleaning agent of the present invention is as described later.

(Cleaning method)
The cleaning method of the present invention includes the following steps.
Process for preparing the cleaning agent by mixing the cleaning composition of the present invention and dilution water Process for foaming the cleaning agent and attaching it to the object to be cleaned Rinsing the cleaning agent adhering to the object to be cleaned with rinse water

  In the cleaning method of the present invention, details of the cleaning composition are as described above. As described above, the cleaning composition of the present invention is prepared by mixing the cleaning composition of the present invention and dilution water. At this time, preferably, the cleaning composition of the present invention is prepared by mixing about 2 to 40 mass% of the cleaning composition and 60 to 98 mass% of the dilution water.

  Next, the cleaning agent is foamed and attached to the object to be cleaned. As a device for causing the cleaning agent to foam and adhere to the object to be cleaned, a foam cleaning machine can be used. As the foam washer, one having a function of pressurizing a cleaning solution and air is used, and among them, one having a function of adjusting pressure and flow rate is preferable. Specific examples of commercially available foam cleaners include the product name “FI-10 portable foamer” manufactured by DEMA Co., Ltd., the product name “Forming Cart” manufactured by Spraying System Japan Co., Ltd., and “SK11” manufactured by Fujiwara Sangyo Co., Ltd. Among these, “SK11” is easy to handle and can produce stable foam.

  It is desirable that the foamed cleaning agent adhered to the object to be cleaned is allowed to stand for about 1 to 20 minutes while adhering to the object to be cleaned. Thereby, it becomes easy for the foamy cleaning agent to adhere to the dirt of the object to be cleaned, and the cleaning effect can be enhanced.

  Next, the cleaning agent adhering to the object to be cleaned is rinsed with rinse water. The step of rinsing with rinsing water can be performed, for example, by spraying rinsing water from a fixed or movable spray nozzle. The rinsing water includes tap water or soft water, but tap water is usually used. Moreover, although the temperature of rinse water is not specifically limited, It is desirable that it is about 25-50 degreeC from the point of rinse efficiency.

  Furthermore, after rinsing the cleaning agent with rinsing water, a drying process of the object to be cleaned may be performed as necessary. Although it does not restrict | limit especially as a drying method, Usually, it carries out by applying 10-50 degreeC air to a washing | cleaning target object for 30 to 60 minutes. The drying step may be natural drying, air drying at a predetermined temperature, or heat drying as necessary.

  In the cleaning method of the present invention, the object to be cleaned is not particularly limited. For example, food and beverage equipment (for example, food and beverage production equipment) used in food processing factories, beverage factories, dairy factories, beer factories, etc. The outer surface of manufacturing equipment such as a filling machine and a mixing tank, a freezer, a conveyor for transportation, a floor, etc.) are suitable.

  Since the cleaning composition of the present invention is excellent in chlorine stability and gas generation suppression effect when stored for a long time in a high temperature environment, the cleaning method of the present invention is preferably performed even in a high temperature environment. Can do. The high temperature environment in which the cleaning method of the present invention is performed means, for example, cleaning performed in an environment of 30 to 50 ° C.

Hereinafter, the present invention will be described in detail with reference to Examples and Comparative Examples. However, the present invention is not limited to the examples. In addition, the detail of each component used by the Example and the comparative example is as follows.
・ Potassium hydroxide (liquid active ingredient 48%, for food addition)
・ Secondary sodium alkanesulfonate (product name “Hostapua SAS30” manufactured by Clariant Japan Ltd., active ingredient 30%))
・ Dimethyl myristylamine N-oxide (product name “GENAMINOX MY” manufactured by Clariant Japan KK)
・ Dimethyloctylamine N-oxide (product name “GENAMINOX OC” manufactured by Clariant Japan KK)
・ Sodium benzoate (100% purity)
・ Sodium hypochlorite (effective chlorine concentration 12%)
-Sodium 2-phosphonobutane-1,2,4-tricarboxylate (product name “Kyrest PH-435” manufactured by Kyrest Co., Ltd., active ingredient 40%)
・ Calcium chloride (35% active ingredient)
・ Calcium acetate (99% active ingredient)
・ Ethylenediaminetetraacetic acid, tetrasodium (EDTA, 4Na (active ingredient 40%))
・ Glutamic acid diacetic acid ・ Tetrasodium (CMGA ・ 4Na (active ingredient 40%))
・ Methylglycine diacetic acid ・ tetrasodium (MGDA ・ 4Na (active ingredient 40%))
・ Ion exchange water

(Preparation of cleaning composition)
[Examples 1-8 and Comparative Examples 1-6]
A cleaning composition was prepared by mixing the components (A) to (H) with the composition shown in Table 1. In Table 1, the unit of the numerical value of each component is mass%, and is a value converted to the effective component amount (content) of each component in the cleaning composition. However, about sodium hypochlorite, it represented as effective chlorine concentration (%) in a cleaning composition measured by the following measuring method. In Table 1, the water as component (H) is the total content of mixed ion-exchanged water and water derived from each component (that is, the total content of water contained in the detergent composition). Is shown.

(Measurement method of effective chlorine concentration)
The effective chlorine concentration of each cleaning composition obtained above was measured by the following method. An aqueous solution of 1 g of potassium iodide and 10 mL of glacial acetic acid aqueous solution are added to 1 g of the cleaning composition and mixed sufficiently to prepare a mixed solution. Next, the mixture is titrated with a 0.1 M aqueous sodium thiosulfate solution, and the point at which the brown color disappears and becomes colorless is defined as the end point. Based on the dripping amount of the sodium thiosulfate aqueous solution used up to the end point, the effective chlorine concentration is calculated by the following formula.
Effective chlorine concentration [%] = drop amount of sodium thiosulfate aqueous solution [mL] × 0.3546 / mass of cleaning composition [g]

  Each cleaning composition obtained above was mixed with dilution water to prepare a cleaning agent, and the foaming power and retention of each cleaning agent were evaluated by the following methods. Moreover, the chlorine stability in the room temperature environment and high temperature environment of each cleaning composition obtained above, and the gas generation | occurrence | production suppression characteristic in a high temperature environment were evaluated with the following method. Each evaluation result is shown in Table 1.

<Evaluation of foaming power>
Each cleaning composition is diluted to 5% by mass with tap water to prepare a cleaning agent. Next, using a foam washer (product name “SK11” from Fujiwara Sangyo Co., Ltd.), about 300 g of detergent per 1 m ² is applied to the vertical resin surface under the following foaming conditions. At this time, the air pressure is 0.8 MPa and the temperature of the cleaning agent is 20 ° C. The state of the applied cleaning agent is determined according to the following evaluation criteria.
A: Thickness is uniform and fine bubbles are formed.
○: A part of bubbles disappeared, but thick bubbles were formed.
(Triangle | delta): A part of foam | bubble has lose | disappeared and the foam with thin thickness or the foam whose shape is not uniform are formed.
X: Bubbles are not formed (the bubbles are liquid or mist).

<Evaluation of retention>
The cleaning agent is prepared and applied in the same manner as the evaluation of foaming power. Next, the state of the cleaning agent when the cleaning agent applied to a 50 cm × 50 cm resinous vertical plate is allowed to stand for a maximum of 10 minutes is determined according to the following evaluation criteria.
(Double-circle): The bubble which adhered moved very slowly and the bubble which stayed adhered even if it exceeded 10 minutes.
◯: The attached bubbles moved slowly, and the bubbles stayed and adhered for 8 minutes or more and 10 minutes or less.
(Triangle | delta): The bubble which adhered adhered and the bubble stayed and adhered for 5 minutes or more and less than 8 minutes.
X: The attached foam moved rapidly, and the foam flowed off in less than 5 minutes.

<Evaluation of chlorine stability at room temperature>
Each cleaning composition is placed in a sealed container and placed in a constant temperature bath at room temperature (25 ° C.). The effective chlorine concentration of the cleaning composition after being stored as it is for 30 days is measured. The ratio of the “effective chlorine concentration after 30 days” after storage for 30 days at room temperature to the “initial effective chlorine concentration” immediately after production (the residual ratio of effective chlorine concentration) is calculated by the following formula.
Residual rate of effective chlorine concentration [%] = effective chlorine concentration after 30 days [%] / initial effective chlorine concentration [%] × 100
Further, the calculated residual ratio of effective chlorine concentration is evaluated according to the following evaluation criteria.
A: The residual rate is 90% or more.
○: Residual rate is 70% or more and less than 90%.
Δ: Residual rate is 60% or more and less than 70%.
X: The residual rate is 50% or more and less than 60%.
Xx: Residual rate is less than 50%.

<Evaluation of chlorine stability in high temperature environment>
The residual ratio of effective chlorine concentration is evaluated in the same manner as in the above <Evaluation of chlorine stability in room temperature environment> except that each cleaning composition is placed in a sealed container and placed in a constant temperature bath at 40 ° C.

<Evaluation of gas generation suppression characteristics in high temperature environment>
5 g of each cleaning composition with Ni added to a concentration of 1 ppm is put in a container and stored in a constant temperature water bath at 50 ° C. for 2 hours. The amount of gas generated during this period is taken as the size of the foam. Visual comparison was made (the bubbles collected on the upper part of the container were visually observed from the outside to compare the sizes).
A: Bubbles that can be visually confirmed are not generated.
○: Generation of extremely small bubbles was confirmed.
Δ: Bubbles having a size of about 0.1 to 0.5 ml were confirmed.
X: Bubbles having a size exceeding 0.5 ml were confirmed.

  In Table 1, “-” indicates that the operation has not been performed. Moreover, in Table 1, since the liquid isolate | separated during manufacture of a cleaning composition in Comparative Example 2, all evaluation was not performed.

Claims (8)

(A) an alkaline agent;
(B) an anionic surfactant;
(C) dimethyl myristylamine N-oxide and dimethyloctylamine N-oxide ;
(D) benzoic acid or a salt thereof,
(E) hypochlorite ,
(F) phosphonoalkanetricarboxylic acid or a salt thereof;
(G) an alkaline earth metal salt;
(H) water and
Including
(C) The total content of dimethyl myristylamine N-oxide and dimethyloctylamine N-oxide is 0.5 to 5.0% by mass, and the content of dimethyloctylamine N-oxide is 1.0% by mass. % Or less,
Content of said (D) benzoic acid or its salt is 1.0-8.0 mass%,
The cleaning composition whose content of the said (F) phosphonoalkanetricarboxylic acid or its salt is 0.05-1.8 mass%. The cleaning composition according to claim 1, wherein a mass ratio of (D) benzoic acid or a salt thereof and (F) phosphonoalkanetricarboxylic acid or a salt thereof is in the range of 1: 4 to 100: 1. object. The cleaning composition of Claim 1 or 2 containing the said (E) hypochlorite of the quantity from which the effective chlorine concentration in the said cleaning composition becomes 0.1-7.0 mass%.   The cleaning composition in any one of Claims 1-3 which is an object for washing | cleaning of food-drinks manufacturing equipment.   The cleaning composition in any one of Claims 1-4 whose content of the said (H) water is 60-90 mass%.   A detergent comprising 2 to 40% by mass of the detergent composition according to any one of claims 1 to 5 and 60 to 98% by mass of dilution water.   The cleaning agent according to claim 6, which is in a foamed form. Mixing the detergent composition according to any one of claims 1 to 5 and dilution water to prepare a detergent;
Foaming the cleaning agent and attaching it to the object to be cleaned;
Rinsing the cleaning agent adhering to the object to be cleaned with rinse water;
A cleaning method comprising: