JP5421596B2 - Lubricant composition for bottle conveyor and method of using the same - Google Patents

Description

  The present invention relates to a lubricant composition for bottle conveyors that can significantly reduce the amount of lubricant used by intermittently supplying the lubricant.

  Plastic containers such as polyethylene terephthalate, paper containers, metal containers, glass and ceramic containers, etc. are used for containers such as soft drinks, milk, juice, alcoholic beverages, and drinks. When handling containers, a bottle conveyor is generally used to move and convey a large number of containers. In such a factory, it is common to operate the bottle conveyor continuously. At this time, the container may fall over due to friction generated on the contact surface between the container and the bottle conveyor. In order to reduce the friction coefficient, an aqueous surfactant solution is generally used as a lubricant on a container or a bottle conveyor (see, for example, Patent Document 1).

  A lubricant for a bottle conveyor is generally used in a state where a diluted solution diluted with a large amount of water is always sprayed, and a general lubricant does not function as a lubricant when spraying is stopped. Therefore, a tank for storing a large amount of lubricant, recovery and disposal of the lubricant after use, and the like are necessary, which is a heavy burden on the user.

  In order to reduce the burden on the user, it is necessary to reduce the amount of lubricant and dilution water used. Therefore, a type that is not diluted with water or a lubricant with a low dilution rate with water is known (see, for example, Patent Document 2). The purpose of these lubricants is to spray a high-concentration lubricant onto the bottle conveyor to reduce the amount of lubricant used as much as possible, but basically the lubricant must be sprayed continuously. The reduction in usage was not so much desired. In addition, there is a method of intermittent spraying to reduce the amount of lubricant used, but even if it is a high concentration lubricant, if it is not sprayed for a long time, the lubricity on the bottle conveyor will be Therefore, the time that the lubricant does not have to be sprayed is very short, and intermittent spraying that can reduce the amount of lubricant used cannot be performed.

JP-A-11-209773 JP 2007-197580 A

  Therefore, the problem to be solved by the present invention is to provide a lubricant composition for bottle conveyors that can reduce the amount of lubricant used and a method for using the same.

Therefore, the present inventors diligently studied and found a lubricant composition for bottle conveyors that is optimal for intermittent spraying, leading to the present invention. That is, the present invention provides the component (A) as sorbitol, mannitol, DL-pyrrolidonecarboxylic acid or a salt thereof, glycolic acid or a salt thereof, lactic acid or a salt thereof, and the following general formula (1)
_{H- (OC 2 H 4) m} -OH (1)
(Wherein m represents a number of 3 to 1000), 100 parts by mass of one or more compounds selected from polyethylene glycol represented by the following general formula (B) 2)
R- (OA) _n -OH (2)
(In the formula, R represents an aliphatic hydrocarbon group having 8 to 18 carbon atoms, n represents a number of 3 to 50, and A represents an alkylene group of 2 to 4 carbon atoms, provided that n number of A 50 mol% or more must be an ethylene group.) 1 to 200 parts by mass of a nonionic surfactant represented by the formula (1), and 5 parts by mass or more of an anionic surfactant. Agent composition.

  The effect of this invention exists in providing the lubricant composition for bottle conveyors which can reduce the usage-amount of a lubricant, and its usage method by intermittent spraying.

The component (A) of the present invention is selected from sorbitol, mannitol, DL-pyrrolidonecarboxylic acid or a salt thereof, glycolic acid or a salt thereof, lactic acid or a salt thereof, and polyethylene glycol represented by the following general formula (1). .
_{H- (OC 2 H 4) m} -OH (1)
(In the formula, m represents a number of 3 to 1000.)

  Examples of salts used for DL-pyrrolidone carboxylate, glycolate and lactate include alkali metal salts such as sodium salt and potassium salt; alkaline earth metal salts such as magnesium salt and calcium salt. Among these salts, alkali metal salts are preferable and sodium salts are more preferable because they are suitable for intermittent spraying. In addition, the detailed description about the effect of these components with respect to intermittent spraying is mentioned later.

  The molecular weight of polyethylene glycol as component (A) may be any molecular weight as long as the value of m is a number from 3 to 1000, but since the lubricity and sprayability are good, the value of m is 3-500 are preferable, 3-100 are more preferable, 3-50 are still more preferable, and 3-10 are the most preferable. When the value of m is less than 3, good lubricity cannot be obtained, and when the value of m is more than 1000, the viscosity when dissolved in water increases, making it difficult to handle or spraying during use. Etc. may not work well. (A) A component may use 1 type of the compound quoted above, or may use 2 or more types of mixtures.

The component (B) of the present invention is represented by the following general formula (2).
R- (OA) _n -OH (2)
(In the formula, R represents an aliphatic hydrocarbon group having 8 to 18 carbon atoms, n represents a number of 3 to 50, and A represents an alkylene group of 2 to 4 carbon atoms, provided that n number of A 50 mol% or more must be ethylene group.)

  R in the general formula (2) represents an aliphatic hydrocarbon group having 8 to 18 carbon atoms. Examples of such hydrocarbon groups include linear and branched octyl groups, 2-ethylhexyl groups, secondary octyl groups, Linear and branched nonyl groups, secondary nonyl groups, linear and branched decyl groups, secondary decyl groups, linear and branched undecyl groups, secondary undecyl groups, linear and branched dodecyl groups, secondary dodecyl groups Group, linear and branched tridecyl group, secondary tridecyl group, linear and branched tetradecyl group, secondary tetradecyl group, linear and branched hexadecyl group, secondary hexadecyl group, linear and branched stearyl group, 2 -Butyl octyl group, 2-butyl decyl group, 2-hexyl octyl group, 2-hexyl decyl group, 2-octyl decyl group, 2-hexyl decyl group, monomethyl branched-isostearyl group, etc. Alkyl group; octenyl group, nonenyl group, decenyl group, undecenyl group, dodecenyl group, tetradecenyl group, and an alkenyl group such as oleyl group. Among these, an aliphatic hydrocarbon group having 10 to 16 carbon atoms is preferable and an alkyl group having 10 to 16 carbon atoms is more preferable because it is excellent in the effect of uniformly holding the lubricant on the bottle conveyor. The effect of holding the lubricant uniformly on the bottle conveyor will be described in detail below.

A in the general formula (2) is an alkylene group having 2 to 4 carbon atoms, and examples thereof include an ethylene group, a propylene group, an isopropylene group, a butylene group, and an isobutylene group.
The compound represented by the general formula (2) is obtained by adding alkylene oxide to the above monovalent organic hydroxy compound, but the polymerization form is not particularly limited, and ethylene oxide homopolymerization, ethylene oxide and propylene oxide, Random copolymerization, block copolymerization, random / block copolymerization, and the like. What is necessary is just to adjust the compounding ratio of ethylene oxide so that the ratio of the oxyethylene group to the polyoxyalkylene group of the compound represented by the general formula (2) may be 50 to 100 mol%, preferably 60 to 95 mol%. 65 to 90 mol% is more preferable. When the proportion of oxyethylene groups is less than 50 mol%, lubricity may be insufficient or product stability may be unstable. If the ratio of oxyethylene groups exceeds 95 mol%, foaming during use becomes large and continuous use for a long time becomes difficult. If the print printed on the container drops off, the wettability decreases. In some cases, the lubricant cannot be evenly applied, or there may be a problem that the lubricity performance deteriorates when mixed with water.

  Since it adversely affects the durability of the lubricating performance of the lubricant composition for bottle conveyors of the present invention, the amount of the anionic surfactant is limited. Specifically, the blending amount of the anionic surfactant with respect to 100 parts by mass of the component (A) (the total amount when two or more anionic surfactants are contained) must be less than 5 parts by mass. It is preferably less than 3 parts by mass, more preferably less than 1 part by mass, and most preferably no substantial blending.

  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, since the anionic surfactants represented by the following general formulas (3) to (7) particularly have an adverse effect on the lubricant composition for bottle conveyors of the present invention, the general formulas (3) to (7) The blending amount of the anionic surfactant selected from (the total amount when two or more anionic surfactants are contained) is less than 3 parts by mass with respect to 100 parts by mass of the component (A). Is preferred.

(In the formula, R ¹ represents a hydrocarbon group having 7 to 20 carbon atoms which may have an oxygen atom and / or a nitrogen atom, A represents an alkylene group having 2 or 3 carbon atoms, and M ¹ represents an alkali metal. Represents an atom or ammonia, and g represents a number from 0 to 100.)

(In the formula, R ² represents a hydrocarbon group having 7 to 20 carbon atoms which may have an oxygen atom and / or a nitrogen atom, A represents an alkylene group having 2 or 3 carbon atoms, and M ² represents an alkali metal. Represents an atom or ammonia, and k represents a number from 0 to 100.)

(Wherein R ³ represents a hydrocarbon group having 7 to 20 carbon atoms which may have an oxygen atom and / or a nitrogen atom, A represents an alkylene group having 2 or 3 carbon atoms, and R ⁴ represents a carbon number. 1 to 6 represents a hydrocarbon group, M ³ represents an alkali metal atom or ammonia, q represents a number of 0 to 100, s represents a number of 1 when q is 1 to 100, and q is 0 Sometimes represents the number 0 or 1.)

(In the formula, R ⁵ represents a hydrocarbon group having 7 to 20 carbon atoms which may have an oxygen atom and / or a nitrogen atom, A represents an alkylene group having 2 or 3 carbon atoms, and M ⁴ represents an alkali metal. represents an atom or ammonia, r is a number from 0 to 100, B is an alkali metal atom or R ⁶ - (AO) _s - represents a group represented by, R ⁶ is closed oxygen atoms and / or nitrogen atom And represents a hydrocarbon group having 7 to 20 carbon atoms, and s represents a number of 0 to 100.)

(In the formula, R ⁶ represents a hydrocarbon group having 7 to 20 carbon atoms, R ⁷ represents a hydrogen atom or a hydroxyethyl group, R ⁸ represents a hydrogen atom or a hydrocarbon group having 1 to 6 carbon atoms, t Represents a number of 1 to 4. a and b are the number of moles of each compound, each representing a number of 1 to 4.

  In the lubricant composition for a bottle conveyor of the present invention, the component (B) is 1 to 200 parts by weight, preferably 2 to 100 parts by weight, more preferably 5 to 50 parts by weight, with respect to 100 parts by weight of the component (A). Contains. If the blending amount of the component (B) is too small, the wettability on the conveyor may be deteriorated. If the blending amount of the component (B) is too large, bubbles may be generated on the bottle conveyor, or the lubricity is insufficient. There is a case.

  As an actual blending amount, it is preferable to blend 0.2 to 30% by mass of component (A) and 0.05 to 10% by mass of component (B) using water as a solvent. The higher the concentration, the lower the transportation cost. Therefore, when transporting the product, the component (A) is 5 to 30% by mass, preferably 10 to 30% by mass, and the component (B) is 1 to 10% by mass, preferably 3 What is necessary is just to adjust to 10 mass% aqueous solution. Moreover, when using for a bottle conveyor, (A) component is 0.2-5 mass%, Preferably it is 0.2-2 mass%, (B) component is 0.05-2 mass%, Preferably it is 0.05. What is necessary is just to adjust to -1 mass% aqueous solution. As adjustment at the time of use, it is preferable to dilute a high concentration lubricant composition with water 1 to 50 times.

  The method of using the lubricant composition for bottle conveyors of the present invention may be applied or sprayed uniformly on the bottle conveyor in which the containers are flowing, but in order to reduce the amount of lubricant used, the lubricant is intermittently used. Is preferably sprayed. As specific spraying and time for stopping the spraying, for example, after spraying the lubricant for 1 to 300 seconds, the spraying may be stopped for 300 to 7200 seconds, and preferably the time for stopping the spraying is 600 to 7200. Seconds, more preferably 1200 to 7200 seconds, and even more preferably 2000 to 7200 seconds. The longer the time during which spraying is stopped, the more the amount of lubricant used can be reduced, and the time during which spraying is stopped. If it is short, it becomes difficult to reduce the amount of lubricant used. Further, the time during which the spraying of the lubricant is stopped is preferably 10 to 200 times the spraying time of the lubricant. The greatest feature of the lubricant composition for bottle conveyors of the present invention is that the time during which spraying of the lubricant can be stopped can be lengthened.

  The transported material is not particularly defined as long as it is used on a bottle conveyor, but a beverage container is preferable. Examples of the material of such a container include polyethylene terephthalate (PET), polyethylene, polypropylene, polystyrene. Made of plastic, polyamide, polycarbonate, etc .; paper containers (including wax finish and resin coating); metal containers such as iron, aluminum, tin, copper, zinc, or composite materials thereof; Glass containers; ceramic containers and the like. Among these containers, since the effect of the present invention is remarkably exhibited, plastic products are preferable, and use in PET containers is more preferable.

  Here, the effects of the component (A) and the component (B) that can be used in the present invention will be described in more detail. Conventional lubricant compositions for bottle conveyors are usually sprayed continuously on bottle conveyors. The reason for spraying continuously is that the lubricity is lost as soon as spraying is stopped. Therefore, in order to realize an intermittent spray lubrication system, it is necessary to maintain lubricity even when spraying is stopped for a long time. There are many compounds that can achieve lubricity. For example, propylene glycol or dipropylene glycol cannot maintain lubricity for a long time, and glycerin or the like can maintain lubricity for a long time, but the lubricity is poor (the coefficient of friction is low). Too). The component (A) of the present invention does not have such disadvantages and can maintain a preferable lubricity for a long time.

  However, even when the mixture of the component (A) and water is sprayed evenly on the bottle conveyor, when the spraying is stopped, the lubricant on the bottle conveyor is distorted, and the lubricant is evenly distributed on the bottle conveyor. It cannot be held. Therefore, with the component (A) and water alone, a location where the lubricant does not adhere to the bottle conveyor (location where the lubricity is lost) is formed. Of course, such locations are not lubricious, resulting in problems during operation of the bottle conveyor. In order to solve this problem, the component (B) is blended. Although it is known that the component (B) generally shows performance as a lubricant, the component (B) in the present invention does not hinder the lubricity of the component (A), and further on the bottle conveyor. (A) It mix | blends in order to disperse | distribute a component uniformly for a long time.

  Many surfactants have a performance as a dispersant, but even if an anionic surfactant is used instead of the component (B), the component (A) cannot be uniformly held on the bottle conveyor. . In addition, anionic surfactants may cause foaming on bottle conveyors, and may cause soiling of calcium soap, etc. due to reaction with a small amount of calcium in water, resulting in poor lubricity. There is also. When an anionic surfactant is added to the lubricant composition for bottle conveyors of the present invention, the above-mentioned adverse effect appears remarkably, so the addition amount of the anionic surfactant must be limited. Further, when a nonionic surfactant, a cationic surfactant, or an amphoteric surfactant other than the component (B) is used instead of the component (B), the lubricity may be deteriorated or the lubricity may be maintained for a long time. Since it may not be possible, these cannot be used as component (B). However, even when a nonionic surfactant, a cationic surfactant, or an amphoteric surfactant other than the component (B) is added to the lubricant composition for bottle conveyors of the present invention, it is not as bad as an anionic surfactant. Therefore, nonionic surfactants other than the component (B), cationic surfactants, and amphoteric surfactants can be added to the lubricant composition for bottle conveyors of the present invention.

  The lubricant composition for bottle conveyors of the present invention does not reject the addition of known lubricating additives, depending on the purpose of use, bactericides, chelating agents, solvents, surfactants other than anionic surfactants, A pH adjuster, a thickener, a fragrance | flavor, etc. can be mix | blended in the range which does not impair the effect of this invention.

  Examples of the bactericides include isothiazolines, phenols, iodos, hydantoins, guanidines, alkylamines, cationic surfactants, and amphoteric surfactants. 0.01-5 mass% is preferable with respect to the lubricant whole quantity for bottle conveyors of this invention, and, as for the compounding quantity of these disinfectants, 0.05-1 mass% is more preferable.

  Examples of the chelating agent include aminocarboxylic acid or a salt thereof, and in particular, ethylenediaminetetraacetic acid, ethylenediaminetetraacetic acid sodium salt, polyaspartic acid, polyaspartic acid sodium salt, nitrilotriacetic acid, and nitrilotriacetic acid sodium salt. preferable. 0.1-20 mass% is preferable with respect to the lubricant whole quantity for bottle conveyors of this invention, and, as for the compounding quantity in the case of mix | blending a chelating agent, 0.5-10 mass% is more preferable.

  Examples of the solvent include ethanol, isopropanol, propylene glycol, hexylene glycol and the like. 0.1-20 mass% is preferable with respect to the lubricant whole quantity for bottle conveyors of this invention, and, as for the compounding quantity of these solvents, 0.5-10 mass% is more preferable.

  Examples of the surfactant include a cationic surfactant and an amphoteric surfactant. These surfactants can be used as the above bactericides, but can also be used as other product stabilizers. Examples of the cationic surfactant include alkyl (alkenyl) trimethyl ammonium salt, dialkyl (alkenyl) dimethyl ammonium salt, alkyl (alkenyl) quaternary ammonium salt, mono- or dialkyl (alkenyl) containing ether group, ester group or amide group. ) Quaternary ammonium salts, alkyl (alkenyl) pyridinium salts, alkyl (alkenyl) dimethyl benzyl ammonium salts, alkyl (alkenyl) isoquinolinium salts, dialkyl (alkenyl) morphonium salts, benzalkonium chloride, benzethonium chloride and the like. Examples of the amphoteric surfactant include carboxybetaine, sulfobetaine, phosphobetaine, amide amino acid, imidazolinium betaine surfactant and the like. 0.01-5 mass% is preferable with respect to the lubricant whole quantity for bottle conveyors of this invention, and, as for the compounding quantity of these surfactant, 0.05-3 mass% is more preferable.

Hereinafter, the present invention will be specifically described by way of examples. In the following examples and the like,% is based on mass unless otherwise specified.
The compounds used in the test are described below. Note that EO is an abbreviation for ethylene oxide and PO is an abbreviation for propylene oxide, and the numbers represent the number of moles of each added alkylene oxide.

A-1: Polyethylene glycol (weight average molecular weight 200) m = 4.1 in the general formula (1)
A-2: Polyethylene glycol (weight average molecular weight 1000) m = 22.3 of the general formula (1)
A-3: Polyethylene glycol (weight average molecular weight 20000) m of the general formula (1) = 454
A-4: Sorbitol A-5: Mannitol A-6: Sodium DL-pyrrolidonecarboxylate A-7: Sodium glycolate A-8: Sodium lactate

B-1: Lauryl alcohol EO 8 mol PO3 mol adduct (random copolymer)
B-2: Lauryl alcohol EO 15 mol PO5 mol adduct (random copolymer)
B-3: Lauryl alcohol EO 8 mol PO3 mol adduct (block copolymer)
B-4: Decyl alcohol EO 10 mol adduct B-5: Oleyl alcohol EO 15 mol adduct

C-1: Lauryl polyglucoside C-2: H (C ₂ H ₄ O) ₁₃ (C ₃ H ₆ O) ₃₀ (C ₂ H ₄ O) ₁₃ H (pluronic surfactant)
C-3: Polyoxyethylene monolaurate (20) sorbitan C-4: Myristylamine oxide C-5: Glycerin C-6: Dipropylene glycol

D-1: Sodium laurate D-2: Polyoxyethylene (8) Sodium oleyl ether acetate D-3: Polyoxyethylene (3) Sodium lauryl ether sulfate D-4: Sodium dodecylbenzenesulfonate D-5: Lauryl alcohol Phosphoric acid monoester potassium salt D-6: N-oxyethylene laurylamine adipate

  Using the above compounds, lubricants for bottle conveyors were prepared with the formulations described in Tables 1 to 4, and the following tests were performed. The results are shown in Tables 1 to 4.

(1) Lubrication test Immediately after placing a container made of polyethylene terephthalate (PET) having a square bottom and a volume of 500 ml and spraying a lubricant at a rate of 60 ml / min for 30 seconds on a resin conveyor at a bottle conveyor speed of 30 m / min. The coefficient of friction (immediately after adhesion), the coefficient of friction at the time of drying 10 minutes after the end of spraying and 60 minutes after the end of spraying (after drying) were measured. The friction coefficient is calculated from the following calculation formula by connecting a PET container and a load measuring device, measuring a tensile load value during operation of the conveyor.
Coefficient of friction (μ) = tensile load (g) / PET container weight (g)
Lubricity evaluation method-: Friction coefficient (μ) = less than 0.08 (cannot be controlled due to slipping too much)
○: Friction coefficient (μ) = 0.08 or more and less than 0.10 (good sliding)
Δ: Friction coefficient (μ) = 0.10 or more and less than 0.12 (Friction coefficient is slightly high, but can be used)
×: Friction coefficient (μ) = 0.12 or more (slipper is bad and cannot be used)

(2) Wettability test When the conveyor lubricant was sprayed by spraying, the adhesion on the conveyor plate was visually observed and judged according to the following criteria.
◯: One side of the conveyor plate is wet.
(Triangle | delta): Although there is a place which is not partially wet, it is a grade which does not have a problem in use.
X: There are many places where there is repellency and it is not wet, and it hinders use.

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

(4) Antifouling property test The bottle conveyor speed was set at 30 m / min, and after spraying the lubricant at an amount of 60 ml / min for 30 seconds, the dirt adhered on the conveyor during drying 60 minutes after spraying was evaluated. .
◯: Dirt is hardly seen.
Δ: Slight dirt is observed but there is no problem.
X: Adherence of dirt is observed.

Claims (7)

As component (A), sorbitol, mannitol, DL-pyrrolidonecarboxylic acid or a salt thereof, glycolic acid or a salt thereof, lactic acid or a salt thereof, and the following general formula (1)
_{H- (OC 2 H 4) m} -OH (1)
(In the formula, m represents a number of 3 to 1000.)
With respect to 100 parts by mass of one or more compounds selected from polyethylene glycol represented by
As the component (B), the following general formula (2)
R- (OA) _n -OH (2)
(In the formula, R represents an aliphatic hydrocarbon group having 8 to 18 carbon atoms, n represents a number of 3 to 50, and A represents an alkylene group of 2 to 4 carbon atoms, provided that n number of A 50 mol% or more must be an ethylene group) 1 to 200 parts by mass of a nonionic surfactant represented by:
And the lubricant composition for bottle conveyors characterized by an anionic surfactant being less than 5 mass parts.   2. The lubricant composition for bottle conveyors according to claim 1, wherein 50 to 95 mol% is an ethylene group in A of the compound represented by the general formula (2). (A) With respect to 100 parts by mass of component, 1 to 200 parts by mass of component (B) is contained, and the anionic surfactant represented by the following general formulas (3) to (7) is less than 3 parts by mass. The lubricant composition for bottle conveyors according to claim 1, wherein the lubricant composition is provided.

(In the formula, R ¹ represents a hydrocarbon group having 7 to 20 carbon atoms which may have an oxygen atom and / or a nitrogen atom, A represents an alkylene group having 2 or 3 carbon atoms, and M ¹ represents an alkali metal. Represents an atom or ammonia, and g represents a number from 0 to 100.)

(In the formula, R ² represents a hydrocarbon group having 7 to 20 carbon atoms which may have an oxygen atom and / or a nitrogen atom, A represents an alkylene group having 2 or 3 carbon atoms, and M ² represents an alkali metal. Represents an atom or ammonia, and k represents a number from 0 to 100.)

(Wherein R ³ represents a hydrocarbon group having 7 to 20 carbon atoms which may have an oxygen atom and / or a nitrogen atom, A represents an alkylene group having 2 or 3 carbon atoms, and R ⁴ represents a carbon number. 1 to 6 represents a hydrocarbon group, M ³ represents an alkali metal atom or ammonia, q represents a number of 0 to 100, s represents a number of 1 when q is 1 to 100, and q is 0 Sometimes represents the number 0 or 1.)

(In the formula, R ⁵ represents a hydrocarbon group having 7 to 20 carbon atoms which may have an oxygen atom and / or a nitrogen atom, A represents an alkylene group having 2 or 3 carbon atoms, and M ⁴ represents an alkali metal. represents an atom or ammonia, r is a number from 0 to 100, B is an alkali metal atom or R ⁶ - (AO) _s - represents a group represented by, R ⁶ is closed oxygen atoms and / or nitrogen atom And represents a hydrocarbon group having 7 to 20 carbon atoms, and s represents a number of 0 to 100.)

(In the formula, R ⁶ represents a hydrocarbon group having 7 to 20 carbon atoms, R ⁷ represents a hydrogen atom or a hydroxyethyl group, R ⁸ represents a hydrogen atom or a hydrocarbon group having 1 to 6 carbon atoms, t Represents a number of 1 to 4. a and b are the number of moles of each compound, each representing a number of 1 to 4.   It is an aqueous solution containing 0.2-30 mass% (A) component and 0.05-10 mass% (B) component, It is any one of Claims 1-3 characterized by the above-mentioned. Lubricant composition for bottle conveyors.   The usage method of the lubricant composition for bottle conveyors characterized by supplying the lubricant composition for bottle conveyors as described in any one of Claims 1-4 intermittently on a conveyor.   The time for supplying the lubricant composition is 1 to 300 seconds, and the time for not supplying the lubricant composition is 300 to 7200 seconds. how to use.   7. The method for using a lubricant composition for a bottle conveyor according to claim 5 or 6, wherein the conveyed product on the conveyor is a plastic container.