JP5977139B2 - Liquid detergent composition for dishwashing - Google Patents

Description

  The present invention relates to a liquid detergent composition for dishwashing. In particular, the present invention relates to a liquid detergent composition that is excellent in sterilization of cooking utensils and cleaning tools in commercial kitchens.

  Although very high hygiene management is required around the kitchens of commercial facilities, as a result of field surveys, it is known that bacteria are likely to remain in cooking utensils such as cutting boards and cleaning tools such as sponges. In addition, the cleaning tool is a place where bacteria can easily propagate, and there is a concern that the bacteria grown by the cleaning tool may cross-contaminate cooking utensils, tableware, and food. Therefore, sterilization and antibacterial cleaning tools are required. Conventionally, it has been proposed to impart bactericidal and antibacterial properties to a liquid detergent composition used for washing dishes and cooking utensils, and using such a liquid detergent composition is a sponge used for washing. It also leads to sterilization and antibacterial of cleaning tools.

  Patent Document 1 discloses a hard surface such as tableware containing 2-ethylhexyl glyceryl ether, polylysine, 5% by mass or less alkyl glycoside, an anionic surfactant, an amine oxide type surfactant, an amphoteric surfactant and water. A liquid detergent composition suitable for use is disclosed.

  Patent Document 2 discloses a disinfectant containing a specific alkylglycoside surfactant and a biguanide compound as active ingredients, and a toilet liquid cleaning composition containing the same, and a toilet liquid cleaning composition. It is stated that the product can contain alkyl glyceryl ether as a solvent.

JP 2005-187491 A JP 2006-143620 A

  In recent years, techniques for imparting a bactericidal effect to detergent compositions from the viewpoint of safety and hygiene have been actively researched, and in particular, dishwashing detergent compositions wash dishes and urns that come into direct contact with food that enters the mouth. Therefore, it is necessary for safety to give a higher level of bactericidal effect, especially for dishwashing detergents for business use used in kitchens in the restaurant industry, and in kitchen dishes that handle lunch boxes and prepared dishes. Strict bactericidal and sterilizing effects are required to reduce the risk of infection such as food poisoning. However, it is actually difficult to obtain an effective sterilizing effect only by using a normal disinfectant as a cleaning agent, and therefore an effective sterilizing effect can be obtained in order to reduce the risk of infection at a higher level. There is a strong demand for technology.

  The technology of Patent Document 1 has a sufficiently effective antibacterial action in general household dishwashing. However, commercial dishwashing detergents need to obtain a higher level of bactericidal effect in order to reduce the risk of infection such as food poisoning. From this viewpoint, Patent Document 1 is desired to further improve the bactericidal effect. .

  Moreover, when patent document 2 is applied as a washing | cleaning agent for dishwashing for business use, the further improvement in an antibacterial effect and a bactericidal effect is desired. Moreover, it is also desired to obtain a composition having a transparent appearance.

  An object of the present invention is to provide a dishwashing detergent composition that can obtain a higher level of bactericidal effect required for reducing the risk of infection such as food poisoning, has excellent cleanability, and has a transparent appearance. is there.

  The present invention comprises (a) 2-ethylhexyl glyceryl ether (hereinafter referred to as component (a)) of 0.5% by mass to 10% by mass, (b) polyhexamethylene biguanide, polyhexamethylene biguanide acid salt, One or more selected from polylysine and polylysine acid salt (hereinafter referred to as component (b)) is 0.01% by mass or more and 1% by mass or less (however, polyhexamethylene biguanide acid salt or polylysine acid salt amount) Is an amount in terms of polyhexamethylene biguanide or polylysine, respectively), (c) alkylglycoside surfactant (hereinafter referred to as component (c)) is 10% by mass to 30% by mass, and water. A dishwashing liquid detergent composition containing (d) an anionic surfactant (hereinafter referred to as component (d)) of less than 0.1% by mass. To.

  According to the present invention, there is provided a dishwashing detergent composition that provides a higher level of bactericidal effect, has excellent detergency, and has a transparent appearance.

<(A) component>
The component (a) of the present invention is 2-ethylhexyl glyceryl ether. The glyceryl ether is generally produced by reacting 2-ethylhexanol with an epoxy compound such as epihalohydrin or glycidol using an acid catalyst such as BF ₃ or an aluminum catalyst. JP-A-2001-49291 discloses a method for producing the glyceryl ether. A mixture comprising a plurality of products as described. Specifically, as 2-ethylhexyl monoglyceryl ether, a compound in which 2-ethylhexanol is added to the 1-position of an epoxy compound (3- (2-ethylhexyloxy) -1,2-propanediol (hereinafter referred to as component (a1)) And a compound (2- (2-ethylhexyloxy) -1,3-propanediol (hereinafter referred to as component (a2)) added to the 2-position of the epoxy compound. ) Or (a2) and a polyaddition compound (hereinafter referred to as component (a3)) in which an epoxy compound is further added.

  In the present invention, it is preferable to use 2-ethylhexyl monoglyceryl ether having a content of the component (a3) of 30% by mass or less, preferably 10% by mass or less, more preferably 1% by mass or less in the component (a). .

<(B) component>
The dishwashing liquid detergent composition of the present invention is one or more selected from polyhexamethylene biguanide, polyhexamethylene biguanide acid salt, polylysine, and polylysine acid salt as component (b) from the viewpoint of bactericidal properties. Containing.

  Examples of the polyhexamethylene biguanide include compounds represented by the following general formula (b1).

[Wherein R ^1b is a hexamethylene group, n is a number of 2 or more and 14 or less, preferably 10 or more, further 11 or more, and 14 or less, further 13 or less, more preferably 12. is there. ]

  The acid salt of polyhexamethylene biguanide is a partial acid salt or a full acid salt. Examples of acid salts of polyhexamethylene biguanide include compounds represented by the following general formula (b2).

[Wherein R ^1b is a hexamethylene group, m is a number of 2 or more and 14 or less, preferably 10 or more, further 11 or more, and 14 or less, further 13 or less, more preferably 12. . n is a number of 1 or more and 5 m or less, preferably n is a number of 2 or more, further m or more, and 3 m or less and 2 m or less, and more preferably n is m. HY represents an organic acid or an inorganic acid, preferably hydrochloric acid, gluconic acid, or acetic acid, and more preferably hydrochloric acid. ]

  Examples of polylysine include α-poly-L-lysine, ε-poly-L-lysine, and ε-poly-D-lysine. Any of the above polylysines can be used. In the present invention, α-poly-L-lysine and ε-poly-L-lysine can be preferably used from the viewpoint of safety. In particular, ε-poly-L lysine represented by the following formula is preferable from the viewpoint of safety.

[Wherein p is a number of 5 or more and 100 or less, preferably 10 or more, further 13 or more, and 50 or less, more preferably 27 or less. ]

  ε-Poly-L lysine is a polypeptide obtained by culturing a microorganism belonging to the genus Streptomyces and condensing lysine, which is an essential amino acid for the human body. When this polylysine is hydrolyzed by an enzyme in the body, it becomes L-lysine, which is the original component, so that the safety is very high.

  As the polylysine, any of a free form and a form of a salt of an inorganic acid or an organic acid can be used. In the case of a salt form, hydrochloric acid, gluconic acid and acetic acid are preferred, and hydrochloric acid is more preferred.

  As polylysine, what was processed with the excipient | filler and the extender in order to handle easily can be used.

<(C) component>
The dishwashing liquid detergent composition of the present invention contains an alkyl glycoside surfactant as the component (c).

Examples of the alkyl glycoside surfactant include compounds of general formula (c1).
R ^1c- (OR ^2c ) _s G _t (c1)
[Wherein, R ^1c is a linear alkyl group having 8 to 16 carbon atoms, and R ^2c is an alkylene group having 2 to 4 carbon atoms. G represents a group derived from a reducing sugar. s is the average number of added moles and represents a number from 0 to 5, and t is the average degree of condensation and represents a number from 1 to 3. ]

From the viewpoint of detergency, R ^1c in the general formula (c1) is preferably a linear alkyl group having 10 or more carbon atoms, more preferably 12 or more carbon atoms, and 16 or less carbon atoms and further 14 or less carbon atoms. Further, s is preferably 0 or more, 3 or less, more preferably 2 or less, and more preferably 0. R ^2c is preferably an ethylene group.

  In the general formula (c1), G is a group derived from a reducing sugar, and more specifically a glycoside group. The reducing sugar as the raw material may be either aldose or ketose, and examples include triose, tetrose, pentose, and hexose having 3 to 6 carbon atoms. Specific examples of aldose include apiose, arabinose, galactose, glucose, lyxose, mannose, galose, aldose, idose, talose, and xylose. Examples of ketose include fructose. Among these, in the present invention, from the viewpoint of detergency, aldopentose or aldohexose having 5 or 6 carbon atoms is particularly preferred, and glucose is most preferred.

  In the general formula (c1), t represents an average degree of condensation of sugar, and is preferably a number of 1 or more, 2 or less, and 1.5 or less.

The compound of the general formula (c1) can be easily synthesized by acetalizing or ketalizing the above sugar and R ^1c — (OR ^2c ) _s —OH using an acid catalyst. In the case of an acetalization reaction, a hemiacetal structure or a normal acetal structure may be used.

<(D) component>
In the dishwashing liquid detergent composition of the present invention, the content of the anionic surfactant as the component (d) is limited from the viewpoint of bactericidal properties.

  Examples of the component (d) include an anionic surfactant having a hydrocarbon group. Furthermore, examples of the component (d) include an anionic surfactant having a hydrocarbon group having 6 to 22 carbon atoms.

  More specific examples of the component (d) include alkyl or alkenylbenzenesulfonic acid having an alkyl group or alkenyl group having 10 or more carbon atoms and 18 or less carbon atoms, further 16 or less carbon atoms, and 15 or less carbon atoms in the molecule, An alkyl or alkenyl sulfate having an alkyl group or an alkenyl group having 10 or more carbon atoms and 18 or less carbon atoms, further 16 or less carbon atoms, and further 15 or less carbon atoms in the molecule of 10 or more carbon atoms and 18 or less carbon atoms, further 16 or less carbon atoms, Further, an alkylene oxide having an alkyl group or alkenyl group of 15 or less and an average addition mole number of 1 to 6 and a polyoxyalkylene alkyl or alkenyl ether sulfate of 4 moles or less, an olefin (8 or more carbon atoms, 10 or more carbon atoms, and carbon Number 18 or less, further 16 or less, and further 15 or less) sulfonic acid, alka (8 or more carbon atoms, 10 or more carbon atoms, and 18 or less carbon atoms, further 16 or less carbon atoms, 15 or less) sulfonic acid, α-sulfo fatty acid (8 or more carbon atoms, 10 or more carbon atoms, 18 or less carbon atoms, further 16 Hereinafter, 15 or less), α-sulfo fatty acid (8 or more carbon atoms, 10 or more carbon atoms, 18 or less carbon atoms, further 16 or less, further 15 or less) lower alkyl (1 to 3 carbon atoms) ester, fatty acid ( Examples thereof include alkenyl succinic acid having 10 or more carbon atoms and 18 or less carbon atoms, further 16 or less carbon atoms, and 15 or less carbon atoms, and having 8 to 12 carbon atoms in the molecule and salts thereof. Examples of the salt include those selected from alkali metals, alkaline earth metals, and alkanolamines.

<Dishwashing liquid detergent composition>
The liquid detergent composition for dishwashing of the present invention is preferably a transparent liquid in which components are not separated at room temperature, for example, 20 ° C., from the viewpoint of appearance and solution stability. The transparent appearance in the present invention may be that the composition can be confirmed to be uniformly clear by visual observation.

  The liquid detergent composition for dishwashing of this invention contains (a) component 0.5 mass% or more and 10 mass% or less. The content of the component (a) is preferably 1% by mass or more, more preferably 3% by mass or more, and preferably 9% by mass or less, from the viewpoint of detergency, and 8% by mass. % Or less is more preferable.

  In the dishwashing liquid detergent composition of the present invention, the component (b) is 0.01% by mass or more and 1% by mass or less (however, the amount of polyhexamethylene biguanide acid salt or polylysine acid acid salt is Hexamethylene biguanide equivalent or polylysine equivalent). The content of the component (b) is preferably 0.02% by mass or more and more preferably 0.05% by mass or more from the viewpoint of bactericidal properties. And from a viewpoint of product cost, it is preferable that it is 0.5 mass% or less, and it is more preferable that it is 0.2 mass% or less.

  The dishwashing liquid detergent composition of the present invention contains 10% by mass or more and 30% by mass or less of the component (c) from the viewpoint of detergency and transparency of appearance. The content of the component (c) is preferably 15% by mass or more, and more preferably 20% by mass or more from the viewpoint of detergency.

  In the dishwashing liquid detergent composition of the present invention, from the viewpoint of bactericidal properties, the content of (d) anionic surfactant is less than 0.1% by mass, preferably 0.08% by mass or less, More preferably, it is 0.06 mass% or less, More preferably, it is 0.05 mass% or less, More preferably, it is 0.03 mass% or less, More preferably, it is 0.01 mass% or less. It is also preferable that the component (d) is not contained, that is, the content of the component (d) is 0% by mass.

  In the dishwashing liquid detergent composition of the present invention, from the viewpoint of bactericidal properties and detergency, the mass ratio (a) / (b) of the content of the component (a) and the content of the component (b) is 1 or more, It is preferable that it is 500 or less. This mass ratio is preferably 3 or more from the viewpoint of detergency, more preferably 15 or more, and further preferably 30 or more.

  In the dishwashing liquid detergent composition of the present invention, the mass ratio (d) / (b) of the content of the component (b) and the content of the component (d) is 0.3 or less from the viewpoint of bactericidal properties. It is preferable. This mass ratio is preferably 0.1 or less, more preferably 0.05 or less, and still more preferably 0.01 or less. And it is also preferable that it is 0.

  In the present invention, a solvent can be contained as a storage stability improving agent or a viscosity adjusting agent. Specific examples of the solvent include water-soluble organic solvents selected from ethanol, isopropyl alcohol, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, glycerin, isoprene glycol, propylene glycol monomethyl ether, propylene glycol monoethyl ether, Ethanol is preferred. The content of the solvent is preferably 1% by mass or more, further 3% by mass, and 10% by mass or less, and more preferably 7% by mass or less in the composition.

  As other components, as long as the viscosity characteristics are not affected, components that are usually blended in liquid detergents can be blended. For example, a rust inhibitor such as sodium sulfite, a fragrance, and a pigment are also blended within a range that does not affect the effect of the liquid detergent composition of the present invention.

  The liquid detergent composition of the present invention may be in a liquid form in which the above components are dissolved or dispersed in water, and is preferably a solution. The water content may be the balance of the composition. The pH of the liquid detergent composition of the present invention at 20 ° C. is 6.0 or higher, 8.0 or lower, and more preferably 7.0 or lower.

  In this invention, the outstanding effect can be acquired in the washing | cleaning of the tableware and cooking utensil in a place where higher hygiene management is desired, such as a kitchen of a business facility. Usually, cleaning tools used in commercial facilities such as kitchens tend to propagate bacteria more easily than those used in general households due to differences in frequency of use and types of dirt, but the liquid cleaning agent of the present invention. By using the composition, it can be effectively sterilized even in a cleaning tool used in a kitchen of a commercial facility. Moreover, in the liquid cleaning composition of this invention, it becomes what was excellent also in the washability and the transparency of an external appearance.

<Evaluation of bactericidal properties>
Bactericidal properties were evaluated using a 1% by mass aqueous solution prepared by diluting the dishwashing liquid detergent composition shown in Table 1 with ion-exchanged water. 2.0 mL of a sample to be evaluated (the 1% by mass aqueous solution) was collected in a sterilized 10 mL test tube, and physiological saline of Pseudomonas aeruginosa adjusted to have an absorbance (OD) of 1 therein. 100 μL of the dispersion from was added and stirred immediately. After 30 seconds, 200 μL of an evaluation sample to which green bacterium was added was collected and added to 1.8 mL of lecithin / polysorbate (LP) solution that had been weighed in advance in a test tube to stop the bactericidal effect. Thereafter, serial dilution was performed using physiological saline, 100 μL of each solution was applied to a SMA standard agar medium, cultured at 37 ° C. for 24 hours, the number of colonies was counted, and the number of viable bacteria was determined. The results are shown in Table 1.

<Evaluation of cleanability>
A commercially available new sponge (115 mm x 75 mm x 35 mm flexible absorber, trade name: Kikuron, distributor: Kikuron Co., Ltd.) is rinsed with tap water, and the sponge is kept until the tap water content is about 10 g. After squeezing, 1 g of the dishwashing liquid detergent composition shown in Table 1 and about 20 g of tap water were impregnated. The total of the tap water content after squeezing and the soaked tap water content was 30 g. A sponge soaked with a dishwashing liquid detergent composition on a model-stained tableware prepared in advance was bubbled with hands three to three times, and then the model-stained tableware was scrubbed. The tableware with a model stain was a ceramic dish uniformly coated with 1 g of a mixture of beef tallow and rapeseed oil mixed so that the mass ratio was 1: 1. The tap water adjusted to 30 ° C. was rinsed with running water at a flow rate of 4 L / min for 30 seconds to determine the number of dishes that were washed, and the washability was evaluated based on the number of dishes that were washed. It was judged that the plate could be washed when the plate after rinsing had no null. The results are shown in Table 1.

<< Evaluation of appearance >>
The liquid detergent composition for dishwashing of Table 1 was prepared, and the state of the composition in 20 degreeC was visually evaluated immediately after preparation. The results are shown in Table 1.

The components in Table 1 are described below.
Polylysine: ε-poly-L-lysine Hexamethylene biguanide: polyhexamethylene biguanide hydrochloride in which m = 12 and n = m in the general formula (b2) LAS: sodium dodecylbenzenesulfonate

Claims (3)

  (A) 0.5% by mass or more and 10% by mass or less of 2-ethylhexyl glyceryl ether, (b) one or more selected from polyhexamethylene biguanide, polyhexamethylene biguanide acid salt, polylysine, and polylysine acid salt 0.01% by mass or more and 1% by mass or less (however, the amount of polyhexamethylene biguanide acid salt or polylysine acid acid salt is an amount in terms of polyhexamethylene biguanide or polylysine, respectively), (c) alkyl A liquid detergent composition for dishwashing comprising 10% by mass or more and 30% by mass or less of a glycoside surfactant and water, and (d) an anionic surfactant content of less than 0.1% by mass. .   The liquid detergent composition for dishwashing of Claim 1 whose mass ratio (d) / (b) of content of (d) and content of (b) is 0.3 or less.   The liquid detergent composition for dishwashing of Claim 1 or 2 whose mass ratio (a) / (b) of content of (a) and content of (b) is 1-500.