JP2013163784A - Sterilizable lubricant composition for conveyor belt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sterilizable lubricant composition for a conveyor belt, capable of: efficiently transferring a container by the conveyor belt because of excellent lubricity between the container to be transferred continuously by the conveyor belt and the conveyor; killing or preventing cationic surfactant-resistant bacteria as well as normal bacteria that contaminates an upper portion of the conveyor; and showing an excellent bacteria-killing and bacteria-preventing effect because of remarkably reduced occurrence of decomposition when stored for a long period.SOLUTION: A sterilizable lubricant composition for a conveyor belt comprises: 2-methyl-4-isothiazoline-3-one as an (A) component; 1,2-benzisothiazoline-3-one as a (B) component; a cationic surfactant as a (C) component; and water as a (D) component.

Description

  The present invention relates to a sanitizing lubricant composition for a belt conveyor, and more particularly, in a process of stuffing a beverage or the like into a container, the lubricity between the container and the conveyor when the container is moved and conveyed by the belt conveyor is excellent. In addition, the present invention relates to a sterilizing lubricant composition for a belt conveyor having sterilizing properties against general bacteria and cationic surfactant-resistant bacteria.

  A belt conveyor is used for transferring containers in a container packing process of bottles, cans, polyalkylene terephthalate (PET) containers, etc. in a factory for beverages such as milk, beer, and soft drinks. The conveyor in the container filling process is continuously operated by automatic control, and even when the flow of containers such as bottles and cans is stopped, only the conveyor is continuously operated as it is. In such a case, it is preferable that the conveyor surface in contact with containers such as bottles and cans has a low dynamic friction force. Further, when containers such as bottles and cans carried from the washing machine are put on the flow of the conveyor as they are, it is preferable that the conveyor surface has an appropriate static frictional force. For this reason, in order to improve the lubricity between a container and a conveyor and to transfer a container efficiently, the lubricant for conveyors is normally apply | coated to the conveyor surface.

  Since a lubricant for a conveyor usually contains a surfactant, bubbles are likely to be generated on the conveyor surface, and the bubbles on the conveyor may adhere to the container. To do. Moreover, when the container is a bottle, it is customary to inspect the bottle for breakage, poor cleaning, and insufficient internal capacity with an empty bottle or actual bottle inspection machine. May be erroneously detected as broken bottles or dirt. Therefore, it is desired that the lubricant for conveyors is excellent not only in lubricity but also in foam suppression.

  Further, since this type of conveyor is required to prevent contamination due to germs due to hygiene problems, conventionally, a conveyor lubricant containing a sterilizing component together with a lubricating component has been used. For example, when a chlorinated sterilizing component is used, the lubricant component is oxidatively decomposed by the chlorine component and various reactions occur, resulting in the generation of contaminants such as solids, the sterilizing effect being impaired, or the lubricating effect and suppression. There is a problem that the foam effect is reduced. Therefore, there is a need for a disinfectant lubricant for conveyors that has an excellent disinfecting effect without impairing the lubrication effect and foam suppressing effect even when used in combination with a disinfectant.

  As lubricants for conveyors that can solve the above problems, those containing a cationic surfactant having a bactericidal property and a higher fatty acid soap (Patent Document 1), a bactericidal quaternary ammonium type cationic surfactant with an anionic surfactant Containing a bactericidal cationic surfactant, such as those containing an agent (Patent Document 2), those containing 5-chloro-2-methyl-4-isothiazolin-3-one and a cationic surfactant (Patent Document 3) However, the appearance of bacteria having resistance to bactericidal cationic surfactants has also been reported (Non-patent Document 1).

JP-A-1-96294 Japanese Patent Laid-Open No. 2-97592 JP 2009-96997 A

Yoshito Nakagawa: The role of pharmacists in ICT. Urgent special research on infrastructure development for hospital infection control in medical institutions. Principal Researcher Mitsuru Kakui, Special Research Project for Health and Labor Science. 2003 General Research Report pp. 41-48, 2004 (April 2004).

  The lubricants described in Patent Documents 1 and 2 include Alkagenes bacteria, Burkholderia bacteria, Enterobacter bacteria, Klebsiella bacteria, MRSA, Pseudomonas bacteria, Staphylococcus bacteria There is a problem that sterilization bacteria, Erwinia bacteria, Flavobacterium bacteria, Proteus bacteria, Xanthomonas bacteria, and other cationic surfactant resistant bacteria are not sufficiently eradicated or suppressed. . On the other hand, the lubricant described in Patent Document 3 formulated with 5-chloro-2-methyl-4-isothiazolin-3-one has a sterilizing and inhibiting effect on cationic surfactant-resistant bacteria, but 5-chloro -2-Methyl-4-isothiazolin-3-one not only has the potential to adversely affect the human body such as causing allergic reactions, but also increases the AOX value (concentration of organic chlorine, etc.) in industrial wastewater. From the viewpoint of drainage regulation, there are drawbacks such as not being used. Furthermore, 5-chloro-2-methyl-4-isothiazolin-3-one is decomposed when stored for a long period of time, and there is a problem that an excellent sterilizing effect cannot be obtained at the time of use.

  The present invention has been made in view of such problems, and the object thereof is to have excellent lubricity and to have an excellent sterilizing effect with outstanding degradation even when stored over a long period of time. An object of the present invention is to provide a disinfectant lubricant composition for conveyors.

  In order to solve the above-mentioned problems, the present inventors have intensively studied, and as a result, (A) 2-methyl-4-isothiazolin-3-one, (B) 1,2-benzisothiazolin-3-one, (C) The sterilizing lubricant composition for conveyors containing a cationic surfactant and (D) water is excellent in lubricity and can sterilize or suppress bacteria resistant to the cationic surfactant, and can be stored for a long period of time. However, it has been found that the decomposition is remarkably small and an excellent sterilizing effect can be maintained, and the present invention has been completed.

That is, the present invention
(1) 2-methyl-4-isothiazolin-3-one as component (A), 1,2-benzisothiazolin-3-one as component (B), cationic surfactant as component (C), component (D) Disinfectant lubricant composition for conveyors, characterized by containing water as
(2) The cationic surfactant of component (C) is at least one selected from quaternary ammonium salts, guanidine-based cationic surfactants, hexadecyltributylphosphonium, alkyldiamines or salts thereof. The disinfectant lubricant composition for conveyors of (1) above,
(3) The total amount of component (A) 2-methyl-4-isothiazolin-3-one and component (B) 1,2-benzisothiazolin-3-one in the supply liquid supplied onto the conveyor (1) or (2) the disinfectant lubricant composition for conveyors, wherein the amount of the active ingredient is 0.000025 to 20% by weight,
(4) The weight ratio of the (A) component, (B) component active ingredient total amount, and (C) component is (A) + (B) :( C) = 1: 40000-50: 1. The disinfectant lubricant composition for conveyors according to any one of the above (1) to (3),
(5) In addition to (A) component, (B) component, (C) component, (D) component, and further (E) component, a chelating agent is further contained. Any conveyor disinfectant lubricant composition,
(6) The above (1) to (5), further comprising at least one surfactant selected from nonionic surfactants, amphoteric surfactants and anionic surfactants as component (F). Any of the disinfectant lubricant composition for conveyors,
(7) The disinfectant lubricant composition for conveyors according to any one of (1) to (6) above, further comprising a solubilizer as the component (G),
Is a summary.

  The disinfectant lubricant composition for conveyors of the present invention and the method of use thereof can disinfect or suppress not only general bacteria but also bacteria having resistance to cationic surfactants. The decomposition of the components is remarkably small, and an excellent sterilizing effect can be expressed.

  The disinfectant lubricant composition for conveyors of the present invention is supplied onto the conveyor by spraying, applying, etc. without diluting or diluting to about 1000 times or less with water or hot water. The component (A), 2-methyl-4-isothiazolin-3-one, is contained in the feed liquid supplied onto the conveyor in an amount of 0.00001 to 10% by weight as an active ingredient amount. Preferably, from the viewpoint of sterilization effect and economy, it is more preferable that it is blended in the range of 0.000025 to 5% by weight, and it is particularly preferable that it is blended in the range of 0.0001 to 1% by weight. . If the proportion of the component (A) in the supply liquid is less than 0.00001% by weight, a sufficient sterilizing effect cannot be obtained, and even if it exceeds 10% by weight, further sterilizing effect is not improved. On the other hand, 1,2-benzisothiazolin-3-one, which is the component (B), is blended in the range of 0.00001 to 10% by weight as an active ingredient amount in the supply liquid supplied onto the conveyor. Preferably, from the viewpoint of sterilization effect and economy, it is more preferable that it is blended in the range of 0.000025 to 5% by weight, and it is particularly preferable that it is blended in the range of 0.0001 to 1% by weight. . If it is less than 0.00001% by weight, a sufficient sterilizing effect cannot be obtained, and even if it exceeds 10% by weight, further sterilizing effect is not improved. In addition, the total amount of (A) component 2-methyl-4-isothiazolin-3-one and (B) component 1,2-benzisothiazolin-3-one is the active ingredient in the supply liquid supplied onto the conveyor. The amount is preferably blended so as to be in the range of 0.000025 to 20% by weight, and in the range of 0.00005 to 10% by weight from the viewpoint of sterilization effect and economy. More preferably, it is particularly preferable that it is blended in the range of 0.0002 to 2% by weight. Furthermore, from the viewpoint of sterilization effect, the content of the component (B) 1,2-benzisothiazolin-3-one is the same as the content of the component (A) 2-methyl-4-isothiazolin-3-one. It is preferably contained in an amount or more.

  (C) Component cationic surfactants include alkyldimethylbenzylammonium chloride, didecyldimethylammonium chloride, didecyldimethylammonium adipate, didecyldimethylammonium gluconate, didecylmonomethylhydroxyethylammonium chloride, didecylmonomethylhydroxyethyl Ammonium adipate, didecyl monomethylhydroxyethylammonium gluconate, didecylmonomethylhydroxyethylammonium sulfonate, didecyldimethylammonium propionate, 1,4-bis (3,3 ′-(1-decylpyridinium) methyloxy) butane Bromide, N, N′-hexamethylenebis (4-carbamoyl-1-decylpyridinium bromide), Rulyldimethylhydroxyethylammonium chloride, alkyltrimethylammonium chloride, cetylpyridinium chloride, alkyldimethylethylbenzylammonium chloride, decylisononyldimethylammonium chloride, dioctyldimethylammonium chloride, octyldecyldimethylammonium chloride, didecylmethylpolyoxyethyleneammonium propio And quaternary ammonium salts selected from benzethonium chloride, polyhexamethylene biguanide hydrochloride, polyhexamethylene guanidine phosphate, polyhexamethylene guanidine chloride, guanidine cationic surfactants of chlorhexidine gluconate, hexadecyltributylphosphonium , Alkyl diamine or a salt thereof. Among them, alkyl dimethyl benzyl ammonium chloride, didecyl dimethyl ammonium chloride, dioctyl dimethyl ammonium chloride, alkyl diamines, is didecyldimethylammonium adipate preferred. These may be used alone or in combination of two or more.

  It is preferable to mix | blend the cationic surfactant which is the said (C) component so that the amount of active ingredients in a supply liquid may be 0.001 to 10 weight%, and 0.005 to 5 weight% is preferable. If it is less than 0.001% by weight, the effect on general bacteria is low, and even if it is added in an amount of 10% by weight or more, the disinfection effect is not improved.

  The weight ratio of the cationic surfactant of the component (C) to the total amount of the active ingredients of the components (A) and (B) is (A) + (B) :( C) = 1: 40000-50: 1 is preferable, and (A) + (B) :( C) = 1: 25000 to 20: 1 is more preferable, and (A) + (B) :( C) = 1: 10000 to 10: 1 is particularly preferable. If the amount of the cationic surfactant is less than the weight ratio in the range of (A) + (B) :( C) = 1: 40000 to 50: 1, it is not preferable in terms of cost. If there are many agents, foaming will be lost.

  Examples of the water of component (D) used in the disinfectant lubricant composition for conveyors of the present invention include tap water, soft water, pure water, distilled water, ion-exchanged water and the like. Tap water and soft water are preferred.

  The disinfectant lubricant composition for conveyors of the present invention contains a chelating agent as the component (E) in addition to the component (A), the component (B), the component (C), and the component (D). Also good. Furthermore, when a chelating agent is contained, there is an effect of improving the sterilizing action against cationic surfactant resistant bacteria. Chelating agents include ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid (NTA), hydroxyethylenediaminetriacetic acid (HEDTA), diethylenetriaminopentaacetic acid (DTPA), triethylenetetraaminehexaacetic acid (TTHA), hydroxyethyliminodiacetic acid. (HIDA), dihydroxyethyl glycine (DHEG), methyl glycine diacetate (MGDA), glutamate diacetate (GLDA), aspartate diacetate (ASDA), β-alanine diacetate (ADA), serine diacetate (SDA), Amino acids such as glycine, alanine, glutamic acid, aspartic acid, glucolic acid, lactic acid, citric acid, gluconic acid, tartaric acid, malic acid and their alkali metal salts, ammonium salts, monoethanolamine, triethanolamine, monoiso Alkanolamine salts include such Ropanoruamin, among others, ethylenediaminetetraacetic acid in terms of sterilizing effect (EDTA) or a salt thereof.

  The chelating agent as the component (E) is preferably contained in the feed liquid supplied to the belt conveyor in an amount of 0.00005 to 10% by weight, and 0.00015 to 5% by weight, as an active ingredient amount. It is more preferable. If it is less than 0.00005% by weight, the synergistic effect on the cationic surfactant-resistant bacteria is insufficient, and if it exceeds 10% by weight, it is not preferable in terms of cost.

  The disinfectant lubricant composition for conveyors of the present invention is the above component (A), component (B), component (C), component (D), component (A), component (B), component (C). In addition to the (D) component and the (E) component, when one or more surfactants such as a nonionic surfactant, an amphoteric surfactant and an anionic surfactant are further blended as the (F) component, lubrication The property can be further improved. Examples of nonionic surfactants include polyoxyalkylene alkyl ethers, polyoxyalkylene fatty acid esters, block copolymers of polyoxyethylene and polyoxypropylene, and polyoxyalkylene styrenated phenyl ethers. These nonionic surfactants may be used alone or in combination of two or more. Amphoteric surfactants include alkylbetaines, alkylamidopropylbetaines, 2-alkyl-N-carboxymethylimidazolinium betaines, 2-alkyl-N-carboxyethylimidazolinium betaines, alkylaminoethylglycines, alkyldi (aminoethyls). ) Glycine, glycine n- (3-aminopropyl) C10-16 derivative, alkylpolyaminoethylglycine, alkyl β-alanine, alkylaminopropionic acid and / or its salt, and alkylamidodimethylhydroxypropylsulfobetaine. These amphoteric surfactants may be used alone or in combination of two or more.

  Examples of the anionic surfactant include higher fatty acid salts, higher alcohol sulfate esters, sulfurized olefin salts, higher alkyl sulfonates, α-olefin sulfonates, sulfated fatty acid salts, sulfonated fatty acid salts, and phosphate ester salts. , Fatty acid ester sulfate ester salt, glyceride sulfate ester salt, fatty acid ester sulfonate salt, α-sulfo fatty acid methyl ester salt, polyoxyalkylene alkyl ether sulfate ester salt, polyoxyalkylene alkyl phenyl ether sulfate ester salt, polyoxyalkylene Alkyl ether carboxylate, acylated peptide, sulfate ester salt of fatty acid alkanolamide or its alkylene oxide adduct, sulfosuccinate ester, alkylbenzene sulfonate, alkyl naphthalene sulfonate Salt, alkylbenzimidazole sulfonate, polyoxyalkylene sulfosuccinate, N-acyl-N-methyltaurine salt, N-acyl glutamic acid or salt thereof, acyloxyethane sulfonate, alkoxyethane sulfonate, N-acyl -Β-alanine or salt thereof, N-acyl-N-carboxyethyltaurine or salt thereof, N-acyl-N-carboxymethylglycine or salt thereof, acyl lactate, N-acyl sarcosine salt, and alkyl or alkenylaminocarboxy Examples thereof include methyl sulfate and lower fatty acid salts of higher alkylamines. Among these, those represented by the following general formulas 1 to 3 are preferable. These anionic surfactants may be used alone or in combination of two or more.

(In the above formula, R represents a linear or branched alkyl or alkenyl group having 3 to 20 carbon atoms which may have an oxygen atom and / or a nitrogen atom, and R ^′ represents an alkyl having 1 to 4 carbon atoms. N represents an integer of 0 to 20. m represents an integer of 1 to 2. M represents hydrogen, an alkali metal, an amine or an alkanolamine, and AO represents ethylene oxide, propylene oxide or butylene oxide.)

  It is preferable to mix | blend the surfactant of the said (F) component so that it may contain in the ratio of 0.005 to 20 weight% in the supply liquid supplied to a conveyor. If the blending amount in the supply liquid is less than 0.005% by weight, the desired lubricating performance improvement effect cannot be obtained, and if it exceeds 20% by weight, it is not preferable in terms of cost.

  The disinfectant lubricant composition for conveyors of the present invention can further contain a solubilizer as the component (G). When a solubilizer is blended, the stability of the composition is improved and the lubricity can be further improved. Solubilizers include xylene sulfonic acid, sodium xylene sulfonate, potassium xylene sulfonate, toluene sulfonic acid, sodium toluene sulfonate, potassium toluene sulfonate, benzoic acid, sodium benzoate, potassium benzoate, cumene sulfonic acid, cumene Sodium sulfonate, potassium cumene sulfonate, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, hexylene glycol, isoprene glycol, glycerin, 1,3-butylene glycol, 1,4-butylene Glycol, polypropylene glycol, polyethylene glycol, ethyl alcohol, isopropyl alcohol and the like. Qualitative improvement, glycerol from the viewpoint of lubricity improving effect, 1,3-butylene glycol, polyethylene glycol, propylene glycol is preferred. These may be used alone or in combination of two or more. The solubilizer is preferably blended so that the ratio in the feed liquid is 0.1 to 50% by weight. When the ratio of the solubilizer in the supply liquid is less than 0.1% by weight, the lubricity is not improved, and when it exceeds 50% by weight, it is not preferable in terms of cost.

  The lubricant composition of the present invention exhibits an excellent action as a lubricant composition for various belt conveyors such as resin conveyors and stainless steel conveyors. The lubricant composition is an amphoteric surfactant among the above-mentioned components (F). It is preferable to contain an agent, an anionic surfactant, and the component (G) because the effect of improving lubricity in the case of a stainless steel conveyor as well as a resin conveyor is excellent. In particular, when the amphoteric surfactant and the anionic surfactant as component (F) are contained, the lubricity improvement effect in the case of a stainless steel conveyor is more excellent. In particular, as the amphoteric surfactant, alkylaminopropionic acid or a salt thereof 2-alkyl-N-carboxymethyl imidazolinium betaine, 2-alkyl-N-carboxyethyl imidazolinium betaine, and the like, as an anionic surfactant, polyoxyalkylene alkyl ether acetic acid or a salt thereof (compound 2) ), Polyoxyalkylene alkyl ether phosphoric acid and salts thereof (compound of formula 3) are preferred.

  In addition to the above components (A) to (G), the disinfectant lubricant composition for conveyors of the present invention may further contain an alkali agent, organic salt, dispersant, dye, other disinfectant, if necessary, An antifoaming agent, a corrosion inhibitor, a natural extract, etc. can be mix | blended.

  A transported material such as a container transported by a belt conveyor is not particularly defined as long as it is used on a belt conveyor, but a container for beverages is preferable. As a material of such a container, for example, polyethylene terephthalate (PET) Made of plastic, polyethylene, polypropylene, polystyrene, polyamide, polycarbonate, etc., paper containers (including wax finish and resin coating), iron, aluminum, tin, copper, zinc, etc. Examples include a container made of glass, a glass container, and a ceramic container. Among these containers, it is preferable to use a PET container, an aluminum container, a steel container, or a glass container.

  Hereinafter, the present invention will be described more specifically with reference to examples and comparative examples. In addition, the compounding ratio of a following example and each comparative component is weight%. Moreover, the water of (D) component was mix | blended so that the sum total with each component might be 100 weight%.

  In the following Examples and Comparative Examples, the compounds used as the (A) component, the (B) component, the (C) component, the (D) component, the (E) component, the (F) component, and the (G) component are as follows. Shown in

(A) Component A-1: 2-methyl-4-isothiazolin-3-one (B) Component B-1: 1,2-benzisothiazolin-3-one (C) Component cationic surfactant C-1: Benzalkonium chloride C-2: Dioctyldimethylammonium chloride C-3: Polyhexamethylene biguanide hydrochloride (D) component water D-1: Tap water

(E) Component chelating agent E-1: Ethylenediaminetetraacetic acid / disodium (F) component surfactant (nonionic surfactant)
F (n) -1: Lauryl alcohol EO 8 mol PO3 mol adduct (block copolymer)
F (n) -2: polyoxyethylene sorbitan monooleate (amphoteric surfactant)
F (am) -1: sodium cocaminopropionate F (am) -2: 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine (anionic surfactant)
F (a) -1: Polyoxyethylene lauryl ether phosphoric acid / triethanolamine salt F (a) -2: Polyoxyethylene lauryl ether sodium acetate (G) component solubilizer G-1: Glycerin G-2: Propylene glycol

Examples 1-10
A composition containing (A) component, (B) component, (C) component, (D) component, and (E) component in the proportions shown in Table 1 was prepared, and the lubricity test of this composition against general bacteria A sterilization test and a sterilization test against cationic surfactant-resistant bacteria were performed as shown below. The results are shown in Table 1.

(1) Lubricity test test method:
The lubricant was sprayed at 100 ml / min for 2 minutes on a belt conveyor moving at 30 m / min, and then a test container was placed on the belt conveyor, and the average value of the dynamic friction coefficient for 10 minutes was measured. A resin conveyor was used as the belt conveyor, and a polyethylene terephthalate (PET) container (weight 953 g), an aluminum can container (weight 732 g), and a glass bottle container (488 g) were used as test containers. The dynamic friction coefficient was determined by connecting the container and the load measuring device, measuring the average value of the tensile load values during the operation of the conveyor, calculating from the following calculation formula, and evaluating as follows.

(Equation 1)
Coefficient of dynamic friction (μ) = tensile load (g) / container weight (g)

Lubricity evaluation criteria:
A: Dynamic friction coefficient (μ) = 0.07 or more and less than 0.09 (slipping is excellent)
○: Coefficient of dynamic friction (μ) = 0.09 or more and less than 0.11 (good sliding)
Δ: Dynamic friction coefficient (μ) = 0.11 or more and less than 0.13 (slip without problems)
X: Coefficient of dynamic friction (μ) = 0.13 or more (slipping is bad)
Evaluation criteria of Δ, ○, and ◎ were determined to be practical.

(2) Test method for sterilization of general bacteria:
About each test lubricant solution, 0.1 mL of a bacterial solution obtained by culturing the test strain in an SCD broth medium was added to 10 mL each of those immediately after preparation and those stored for 20 days at 40 ° C., and at 25 ° C. After contacting for 15 minutes, 1 mL of this was mixed-cultured on an SCD agar medium, the number of viable bacteria was confirmed, and evaluated according to the following criteria.
Test strain:
Institute for Fermentation of ^{Pseudomonas aeruginosa NBRC13736 (10 8 CFU /} mL ^{level), Staphylococcus aureus NBRC13276 (10 8} CFU / mL ^{level), Alcaligenes faecalis NBRC14479 (10 8} CFU / mL ^{level), Serratia marcescens NBRC12648 (10 8} CFU / mL level) was used.
Evaluation criteria:
○: Bacterial count reduction of 5 Log reduction or more Δ: Log reduction was 4 or more and less than 5 B: Reduction in bacterial count of less than 4 Log reduction, and Δ and ○ were judged as practical.

(3) Test method for sterilization test against cationic surfactant resistant bacteria:
For each test lubricant, 1 mL of a physiological saline suspension of a test cationic surfactant-resistant strain cultured on an SCD agar medium was added to 99 mL each of those immediately after preparation and those stored for 20 days at 40 ° C. After addition and contact at 25 ° C. for 4 days, 1 mL of this was mixed-cultured on an SCD agar medium, and the viable cell count was confirmed. The dilution water used was artificial hard water having a hardness of 50 ppm.
Test strain:
Alcaligenes faecalis (10 ⁸ CFU / mL level), a cationic surfactant-resistant strain that was collected at a beverage factory and isolated and identified, Serratia marcescens (a cationic surfactant-resistant strain that was collected and identified at a food factory ( 10 ⁸ CFU / mL level) was used.
Evaluation criteria:
◯: Decrease in the number of bacteria over 5 Log reduction Δ: Decrease in the number of bacteria with Log reduction of 4 or more and less than 5 ×: Decrease in the number of bacteria less than 4 Log reduction, and Δ and ○ were judged as practical.

Examples 11-20
(A) component, (B) component, (C) component, (D) component, (E) component, (F) component, and the composition which mix | blended (G) component in the ratio shown in Table 2, The lubricity test of this composition, the sterilization test against general bacteria, and the sterilization test against cationic surfactant-resistant bacteria were tested in the same manner as in Examples 1-10. In Examples 13 to 20 including the amphoteric surfactant of the component (F), the anionic surfactant, and the solubilizer of the component (G), the lubricity test is performed for the stainless steel (SUS) conveyor together with the resin conveyor. Were also tested. The results are shown in Table 2.

Examples 21-30
(A) component, (B) component, (C) component, (D) component, (E) component, (F) component, and the composition which mix | blended (G) component in the ratio shown in Table 3, The lubricity test of this composition, the sterilization test against general bacteria, and the sterilization test against cationic surfactant-resistant bacteria were tested in the same manner as in Examples 1-10. The lubricity test was conducted on a stainless steel (SUS) conveyor as well as a resin conveyor. The results are shown in Table 3.

Examples 31-34
A composition in which (A) component, (B) component, (C) component, (D) component, (E) component, and (F) component were blended in the proportions shown in Table 4 was prepared, and lubrication of this composition In the same manner as in Examples 1 to 10, a test for sterility, a sterilization test for general bacteria, and a sterilization test for cationic surfactant-resistant bacteria were performed. The lubricity test was conducted on a stainless steel (SUS) conveyor as well as a resin conveyor. Moreover, the following foaming test was done. The results are shown in Table 4.

(4) Foaming test 60 ml / min of lubricant was sprayed for 5 minutes on a resin conveyor at a conveyor speed of 60 m / min, and the foaming on the conveyor was evaluated.
A: No bubbles are formed.
○: There is little foaming of the conveyor plate.
Δ: Bubbles are formed on a part of the conveyor plate.
X: Bubbles are formed on the entire surface of the conveyor plate.

Comparative Examples 1-9
(A) component, (B) component, or in place of (A) component or (B) component, 5-chloro-2-methyl-4-isothiazolin-3-one, (C) component, ( The composition which mix | blended D) component, (E) component, and (F) component in the ratio shown in Table 5 was prepared, the lubricity test of this composition, the disinfection test with respect to general bacteria, and cationic surfactant resistance The sterilization test for bacteria was tested in the same manner as in Examples 1-10. Moreover, the foaming test was done like Examples 31-34. The results are shown in Table 5.

Claims (7)

  2-methyl-4-isothiazolin-3-one as component (A), 1,2-benzisothiazolin-3-one as component (B), a cationic surfactant as component (C), and water as component (D) A disinfectant lubricant composition for conveyors, comprising:   The cationic surfactant of component (C) is at least one selected from quaternary ammonium salts, guanidine-based cationic surfactants, hexadecyltributylphosphonium, alkyldiamines or salts thereof. Item 1. A disinfectant lubricant composition for conveyors according to Item 1.   The total amount of component (A) 2-methyl-4-isothiazolin-3-one and component (B) 1,2-benzisothiazolin-3-one is the amount of active ingredient in the supply liquid supplied onto the conveyor. The sterilizing lubricant composition for conveyors according to claim 1 or 2, wherein the composition is 0.000025 to 20% by weight.   The weight ratio of the total amount of the active ingredient (A) and the ingredient (B) to the ingredient (C) is (A) + (B) :( C) = 1: 40000-50: 1 The disinfectant lubricant composition for conveyors according to any one of claims 1 to 3.   The conveyor according to any one of claims 1 to 4, further comprising a chelating agent as the component (E) together with the component (A), the component (B), the component (C), and the component (D). Disinfectant lubricant composition for use.   Furthermore, it contains at least 1 sort (s) of nonionic surfactant, amphoteric surfactant, anionic surfactant as (F) component, For conveyors in any one of Claims 1-5 characterized by the above-mentioned. Bactericidal lubricant composition.   The disinfectant lubricant composition for conveyors according to any one of claims 1 to 6, further comprising a solubilizer as component (G).