JP3126338B2 - Sterilizable conveyor lubricant for container transport - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to milk, beer,
The present invention relates to a germicidal conveyor lubricant for transporting containers such as bottles and cans of foods such as alcoholic beverages and refreshing beverages. More specifically, the present invention relates to a germicidal conveyor lubricant which has improved lubricity on a conveyor surface, improves lubrication effect persistence and sterilization properties, and has an excellent effect of suppressing rusting of iron parts.

[0002]

2. Description of the Related Art In the bottles and canning processes of foods and medicines such as milk, beer, liquor and soft drinks, in order to move bottles and cans, a large number of plates on which bottles and cans are placed are endless in the transport direction. Container conveyors are used. These container transport conveyors are continuously operated by automatic control. Therefore, even if the flow of bottles and cans is stopped, only the container transport conveyors are continuously operated.
Therefore, in this case, friction occurs between the bottles and cans and the surface of the plate of the conveyor, which abnormally increases the load on the motor and damages the bottles and cans. Therefore, it is necessary to reduce this friction. On the other hand, in order to put bottles and cans carried from the washing machine on the flow of the container transport conveyor as they are, an appropriate static friction force is required on the plate surface of the conveyor.

[0003] As a lubricant satisfying these needs, a lubricant mainly comprising a higher fatty acid soap has been conventionally known. For example, a lubricant containing potassium coconut oil fatty acid soap, amine oleate soap and the like as main components has been known. There is something, 10
It was provided for use by applying a dilution of 0 to 400 times on the plate surface of the container transport conveyor.
Furthermore, in recent years, there has been an increasing demand for suppressing the growth of microorganisms on conveyors and ensuring thorough hygiene management. The present applicant has developed a bactericidal lubricant composition comprising a specific anionic surfactant and a bactericidal quaternary ammonium salt. Invented the product (Japanese Patent Publication 4-6)
756).

However, the bactericidal quaternary ammonium salt used in the present invention uses a halogen such as chlorine as a counter ion, which causes rust on iron parts around the conveyor. Furthermore, the bactericidal quaternary ammonium salt used in the above invention has a strong property of adsorbing on the surface of the container and the surface of the conveyor, and causes water repellency on the surface of the container and the surface of the conveyor on which the quaternary ammonium salt is adsorbed. As a result, the water film on the surface of the container turns into water droplets, which causes an erroneous operation of the container defect inspection machine. Further, since the wettability of the conveyor surface is poor, lipophilic dirt such as abrasion powder is apt to adhere to the conveyor surface.

On the other hand, since the HACCP system has recently been introduced into food processing plants, a higher level of sterilization effect has been required, and it has been required to further enhance the cleaning effect and the sterilization effect of the conveyor surface. Didecyldimethylammonium chloride, which is a bactericidal quaternary ammonium salt, has an excellent bactericidal effect. However, when blended with a germicidal conveyor lubricant, it has a better appearance than a germicidal lubricant containing other bactericides. Poor stability necessitates the addition of a solubilizer and increases the chemical oxygen demand (COD).

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a container disinfectant having excellent wettability, detergency, and disinfectability without causing rust on the iron parts around the conveyor, and having good appearance stability of the preparation. Obtaining a conveyor lubricant.

[0007]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to achieve the above object, and as a result, the use of a quaternary ammonium salt whose counter ion is an organic carboxylate anion as a bactericide component has resulted in a problem. They found that they could be solved and arrived at the present invention. That is, the present invention provides an anionic surfactant (component A) represented by the general formula (1) and a compound (B1) represented by the general formula (2) or a compound (B2) represented by the general formula (3). A germicidal conveyor lubricant comprising a quaternary ammonium salt (B component), wherein the weight ratio of (A component) to (B component) is A / B = 30/70 to 80/20. .

General formula (1) (Wherein, R ₁ is a linear or branched alkyl or alkenyl group having 8 to 20 carbon atoms; A is an alkylene group having 2 to 4 carbon atoms; n is a number of 1 to 4; m is 1 or 2 M is a hydrogen atom, an alkali metal, an alkaline earth metal, ammonia or an amine.) General formula (2) (Wherein, R ₂ , R ₃ , R ₄ and R ₅ are the same or different and each is a linear or branched alkyl group or alkenyl group having 1 to 22 carbon atoms; k is an integer of 1 to 4; X ^k- is It is a k-valent anion of an organic carboxylic acid.) General formula (3) (Wherein, R ₆ , R ₇ and R ₈ are the same or different and each is a linear or branched alkyl or alkenyl group having 1 to 22 carbon atoms; Ph is a phenyl group; k is an integer of 1 to 4; X ^{k -} is a k-valent anion of an organic carboxylic acid).

The present invention solves the above-mentioned problems, and provides a sterilizing conveyer lubricant for transporting containers which is excellent in wettability, detergency and sterilization without rusting iron parts around the conveyor.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The germicidal conveyor lubricant for transporting containers according to the present invention comprises an anionic surfactant (component A) represented by the following general formula (1) and a compound (B1) represented by the following general formula (2) ) Or a compound (B2) represented by the general formula (3)
A quaternary ammonium salt (component B).

General formula (1) (Wherein, R ₁ is a linear or branched alkyl or alkenyl group having 8 to 20 carbon atoms; A is an alkylene group having 2 to 4 carbon atoms; n is a number of 1 to 4; m is 1 or 2 M is a hydrogen atom, an alkali metal, an alkaline earth metal, ammonia or an amine.)

General formula (2) (Wherein, R ₂ , R ₃ , R ₄ and R ₅ are the same or different and each is a linear or branched alkyl group or alkenyl group having 1 to 22 carbon atoms; k is an integer of 1 to 4; X ^k- is It is a k-valent anion of an organic carboxylic acid.)

General formula (3) (Wherein, R ₆ , R ₇ and R ₈ are the same or different and each is a linear or branched alkyl or alkenyl group having 1 to 22 carbon atoms; Ph is a phenyl group; k is an integer of 1 to 4; X ^{k -} is a k-valent anion of an organic carboxylic acid).

The anionic surfactant (component A) represented by the general formula (1) is a long-chain alkyl phosphate represented by the following general formula (1). General formula (1)

R ₁ in the general formula (1) has 8 to 20 carbon atoms.
A linear or branched alkyl group or alkenyl group, preferably a linear or branched alkyl group or alkenyl group having 10 to 18 carbon atoms, more preferably a linear or branched linear or branched group having 10 to 14 carbon atoms. It is an alkyl group or an alkenyl group. Specific examples of R ₁ include an octyl group, a 2-ethylhexyl group, a decyl group, a decylene group, a lauryl group, a dodecylene group, a myristyl group, a palmityl group, a stearyl group, an oleyl group, and a coconut oil alkyl group. Preferably decyl group, decylene group, lauryl group, dodecylene group, myristyl group, palmityl group,
Examples include a stearyl group, an oleyl group, and a coconut oil alkyl group, and more preferably a decyl group, a decylene group, a lauryl group, a dodecylene group, a myristyl group, and the like.

A in the general formula (1) is an alkylene group having 2 to 4 carbon atoms, specifically, an ethylene group, a propylene group, a butylene group or a combination thereof, preferably an ethylene group alone or an ethylene group. It is a combination of other alkylene groups, and particularly preferably an ethylene group alone. N in the general formula (1) is a number of 1 to 4, preferably 1 to 2
It is. When n is 0, the stability and detergency of the liquid tend to be poor. When n is 5 or more, the lubricity tends to be insufficient.

In the general formula (1), m is 1 (phosphate monoester) or 2 (phosphate diester). As the anionic surfactant (A component) of the present invention, phosphate monoester (A1) , Phosphoric diester (A2), and combinations thereof. The ratio between (A1) and (A2) is not particularly limited, but (A1) is preferably 40% or more from the viewpoint of lubricity. Further, in consideration of solution stability and lubricity, (A1) is particularly preferably 70% or more. M in the general formula (1) is a hydrogen atom, an alkali metal (eg, sodium or potassium), an alkaline earth metal (eg, magnesium or calcium), ammonia, an amine [alkylamines (eg, ethylamine, butylamine), alkanolamines (eg, Monoethanolamine, diethanolamine, triethanolamine, etc.)], and alkanolamines are preferred.

Specific examples of the anionic surfactant (component A) represented by the general formula (1) include polyoxyethylene (average n = 4) stearyl phosphate sodium salt and polyoxyethylene (average n = 4) ) Potassium stearyl phosphate, polyoxyethylene (average n =
2) Caprylic acid phosphate morpholine salt, polyoxyethylene (average n = 2) caprylic acid phosphate ammonium salt, polyoxyethylene (average n = 2) lauryl phosphate monoethanolamine salt, di (oxyethylene lauryl) phosphate Examples include diethanolamine salts and polyoxyethylene (average n = 2) oleyl phosphate triethanolamine salts. Of these, polyoxyethylene (average n = 4) stearyl phosphate sodium salt, polyoxyethylene (average n = 2) lauryl phosphate monoethanolamine salt, di (oxyethylene lauryl) phosphate diethanolamine salt, Polyoxyethylene (average n
= 2) oleyl phosphate triethanolamine salt, polyoxyethylene (average n = 2) oleyl phosphate monoethanolamine salt, particularly preferred is polyoxyethylene (average n = 2) lauryl phosphate monoethanolamine Salt.

The compound (B1) used in the present invention is a quaternary ammonium salt represented by the general formula (2). General formula (2) R ₂ , R ₃ , R ₄ and R ₅ in the general formula (2) are the same or different, and each is a linear or branched alkyl group or alkenyl group having 1 to 22 carbon atoms. Specifically, there are the following [1] and [2].

[1] R ₂ and R ₃ are linear or branched alkyl groups having 8 to 12 carbon atoms, and R ₄ and R ₅ are alkyl groups having 1 to 3 carbon atoms, preferably R ₂ and R ₃ Is a linear or branched alkyl group having 8 to 12 carbon atoms, and R ₄ and R ₅ are methyl groups. [2] R ₂ is a linear or branched alkyl group or alkenyl group having 12 to 20 carbon atoms, and R ₃ , R ₄ and R ₅ are alkyl groups having 1 to 3 carbon atoms, preferably R ₂
Is a linear or branched alkyl group having 12 to 20 carbon atoms, R
₃ , R ₄ and R ₅ are methyl groups. Of [1] and [2], [1] is preferable.

The compound (B2) used in the present invention is a quaternary ammonium salt represented by the general formula (3). General formula (3) R ₆ , R ₇ and R _{8 in the} general formula (3) are the same or different, and each is a linear or branched alkyl group or alkenyl group having 1 to 22 carbon atoms. Preferably, R ₆ is a linear or branched alkyl or alkenyl group having 8 to 18 carbon atoms, and R ₇ and R ₈ are alkyl groups having 1 to 3 carbon atoms. More preferably, R ₆ is a linear or branched alkyl group having 10 to 16 carbon atoms, and both R ₇ and R ₈ are methyl groups. Ph in the general formula (3) is a phenyl group.

In the general formulas (2) and (3), k is 1 to
And X ^k- is a k-valent anion of the organic carboxylic acid.

The following are specific examples of the quaternary ammonium salt represented by the general formula (2). [1] octyldecyldimethylammonium, dioctyldimethylammonium, didecyldimethylammonium, didodecyldimethylammonium, bis (2-ethylhexyl) dimethylammonium, etc. [2] dodecyltrimethylammonium, tetradecyltrimethylammonium, hexadecyltrimethylammonium, octadecyltrimethyl Ammonium, coconut oil alkyltrimethylammonium, dodecylmethyldiethylammonium, tetradecylmethyldiethylammonium, hexadecylmethyldiethylammonium,
Octadecylmethyldiethylammonium, coconut oil alkylmethyldiethylammonium, 2-ethylhexadecyltrimethylammonium, isostearyltrimethylammonium, oleyltrimethylammonium, etc.

Of these, [1] is preferably octyldecyldimethylammonium, dioctyldimethylammonium, and didecyldimethylammonium, and [2] is dodecyltrimethylammonium, tetradecyltrimethylammonium, and hexadecyltrimethylammonium. Particularly preferred are [1]
Is didecyldimethylammonium, and [2] is hexadecyltrimethylammonium.

The following are specific examples of the quaternary ammonium salt represented by the general formula (3). Examples include decyl dimethyl benzyl ammonium, dodecyl dimethyl benzyl ammonium, tetradecyl dimethyl benzyl ammonium, hexadecyl dimethyl benzyl ammonium, dimethyl coconut oil alkyl benzyl ammonium, oleyl dimethyl benzyl ammonium and the like.
Of these, dodecyldimethylbenzylammonium and tetradecyldimethylbenzylammonium are preferred.

In the general formula (2) or (3), X ^k-
Examples of the organic carboxylic acid composed of the k-valent anion of the organic carboxylic acid represented by the following include the following. (1) Aliphatic monocarboxylic acids ・ Saturated monocarboxylic acids (acetic acid, propionic acid, butyric acid, isobutyric acid, valeric acid, caproic acid, enanthic acid, caprylic acid, velargonic acid, lauric acid, myristic acid, stearic acid, behenic acid , 2-ethylhexanoic acid, etc.-Unsaturated monocarboxylic acids (oleic acid, hexadecenoic acid, etc.)-Aliphatic oxycarboxylic acids (glycolic acid, lactic acid, tartaric acid, gluconic acid, etc.) (2) Aromatic / heterocyclic monocarboxylic acids Benzoic acid, cinnamic acid, naphthoic acid, pyrrolidone carboxylic acid, etc. (3) Polycarboxylic acid ・ 2- to 4-valent polycarboxylic acid Aliphatic polycarboxylic acid [Saturated polycarboxylic acid (oxalic acid, malonic acid, succinic acid, glutar Acids, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, etc.); unsaturated polycarboxylic acids (maleic , Fumaric acid, itaconic acid)]; aromatic polycarboxylic acids [phthalic acid, isophthalic acid, terephthalic acid, trimellitic acid,
Pyromellitic acid, etc.]-Sulfur atom-containing polycarboxylic acids (thiodipropionic acid, etc.)

Of these, preferred are those having a molecular weight of 60
To 600 organic carboxylic acids, more preferred are gluconic acid, adipic acid, sebacic acid and lactic acid, and particularly preferred are adipic acid and sebacic acid.

The fourth compound represented by the general formula (2) or (3)
The quaternary ammonium organic carboxylate can be usually produced by the following method. One mole of a tertiary amine and at least an equimolar amount of a dialkyl carbonate are reacted with or without a solvent at a reaction temperature of 80 to 200 ° C, preferably 100 to 200 ° C.
An alkylation reaction is performed at 150 ° C., and an organic carboxylic acid and water are added to the reaction product to obtain a quaternary ammonium organic carboxylate solution.

The weight ratio of component A to component B is usually A / B
= 30 / 70-80 / 20, preferably 40 / 60-
70/30. If A / B is more than 80/20, the bactericidal property is insufficient, and if it is less than 30/70, the lubricity is poor.

The container-sterilizing conveyor lubricant of the present invention may contain a detergent, a solubilizer, a defoamer, a
Adjusting agent, metal chelating agent, etc. are blended,
It is used by diluting it 1000 times and applying it to the surface of the container conveyor.

The germicidal conveyer lubricant for container transport obtained according to the present invention has a reduced surface tension and contact angle due to the organic carboxylic acid as the counterion of the bactericidal quaternary ammonium salt. Superior wettability to the container surface and conveyor surface compared to lubricants, greatly improving the sustainability of the lubricating effect. In addition, by improving the wettability of the container surface, water repellency is prevented, adhesion of water droplets on the container surface is suppressed, and erroneous operation of the container with a defect inspection machine is reduced. Further, since the adhesion of dirt on the conveyor surface is also suppressed, the washing property is improved, and the sterilization effect is also improved.

The bactericidal quaternary ammonium salt, which is the component B of the present invention, does not use halogen as a counter ion, and therefore suppresses rusting of iron parts as compared with conventional bactericidal conveyor lubricants. The effect is remarkably improved, for example, the irritation to the skin is reduced. In addition, since the germicidal conveyor lubricant of the present invention uses a cationic B component which is an organic carboxylic acid as a counter ion, the formulation has good appearance stability even when blended with an anionic surfactant (A component). Therefore, the amount of the solubilizer and the like can be reduced, and the chemical oxygen demand (COD) can be reduced.

[0033]

The present invention will be further described by the following examples, which should not be construed as limiting the invention. The numerical values in the examples indicate parts by weight.

Examples 1 to 3 were prepared at the mixing ratios shown in Table 1.
And the germicidal conveyor lubricants of Comparative Examples 1 to 3 were prepared. The compounds of the components described by the symbols in Table 1 are as follows. A1: polyoxyethylene (average n = 2) lauryl phosphate monoethanolamine salt C: sodium lauryl phosphate D: polyoxyethylene (average n = 7) lauryl phosphate monoethanolamine salt B1: didecyldimethylammonium Adipic acid B2: Didecyldimethylammonium sebacic acid B3: Hexadecyltrimethylammonium adipic acid B4: Dodecyldimethylbenzylammonium sebacic acid E: Didecyldimethylammonium chloride

[0035]

[Table 1]

The following performance evaluation was performed on the germicidal conveyor lubricants obtained in Examples 1 to 3 and Comparative Examples 1 to 3. In addition,
For the evaluation of lubricity, a sample solution prepared by diluting a germicidal conveyor lubricant with water 300 times and 600 times was used, and the sample solution diluted 300 times was used for wettability evaluation, cleaning property evaluation, rust prevention evaluation and sterilization evaluation. Was used. Table 2 shows the results.

<Evaluation of Lubricity> The test conveyor line was operated while supplying the sample solution, and the transport state of the container after 10 minutes was observed. (Judgment criteria) ：: The container is transported without hindering workability. Δ: The container was shaken, and the workability was somewhat impaired. ×: The workability is impaired, and the container falls.

<Evaluation of Wettability> The test conveyor line was operated while supplying the sample solution, and the wet state of the container surface after 10 minutes was observed. (Judgment criteria) ：: Wet without water repellency. ×: Water repellent and not wet.

<Evaluation of Cleaning Property> The test conveyor line was operated while supplying the sample solution, and the cleaning degree of the conveyor plate surface after 30 minutes was observed. (Judgment Criteria) A: Wear powder does not adhere and is kept clean. Δ: Debris was observed, but almost clean. X: Wear powder adhered and was not kept clean.

<Evaluation of Rust Prevention Property> The degreased and polished steel sheet was immersed in a sample solution at room temperature for 24 hours, and the degree of rust generation was observed. (Judgment criteria) ：: No rust is observed. X: Rust is observed.

<Evaluation of Bactericidal Property> Escherichia coli was brought into contact with a sample solution for 10 minutes in accordance with the Ministry of Health and Welfare Health Examination Guidelines, inoculated into a liquid medium, and cultured at 37 ° C. for 48 hours. Judged. (Judgment criteria) ：: No breeding of bacteria was observed. ×: Propagation of bacteria is observed.

<Evaluation of Appearance Stability> The appearance stability of the preparation after adjusting the blending of the raw materials was observed. (Judgment criteria) ○: Uniform ×: Separated

[0043]

[Table 2]

From Table 2, it can be seen that the germicidal conveyor lubricant for transporting containers of the present invention has good lubricity and bactericidal properties, and is excellent in rust prevention, wettability, detergency and appearance stability of the preparation. I understand.

[0045]

The germicidal conveyor lubricant for transporting containers of the present invention has the following effects. (1) It has excellent lubricity when transporting food and medicine bottles and cans by a conveyor. (2) It has an excellent bactericidal effect, and the control of microorganisms on the conveyor surface is sufficient. (3) Do not rust iron parts around the conveyor. (4) Since the surface of the container does not repel water, erroneous operation of the container defect inspection machine is reduced. (5) Abrasion powder does not adhere and the conveyor surface leans cleanly. (6) Since the appearance stability of the preparation is good, the addition of a solubilizer is small and the chemical oxygen demand (COD) is low.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI F16N 15/00 F16N 15/00 // C10N 10:02 10:04 30:16 40:00 (72) Inventor Katsumi Shinoda Kyoto City East Sanyo Chemical Industry Co., Ltd. (72) Inventor, Yasuhiro Yamada 11-11, Hitotsubashi Nohonmachi, Yamaku-ku Sanyo Chemical Industry Co., Ltd. (72) Inventor, Yasuhiro Yamada 11-71, Hitotsubashi Nohonmachi, Higashiyama-ku, Kyoto 11 Sanyo Kasei Kogyo Co., Ltd. (11) Hashino Honcho (56) References JP-A-2-97592 (JP, A) JP-A-9-132504 (JP, A) JP-A-1-204701 (JP, A) JP-A-63-64701 (JP, A) JP-B-39-17547 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , DB name) C10M 173/02 C10M 105/58-105 / 66 C10M 105/74 C10M 133/04-133/14 C10N 30:16

Claims (7)

(57) [Claims] 1. An anionic surfactant (component A) represented by the general formula (1) and a compound (B) represented by the general formula (2)
1) or a quaternary ammonium salt (component B) which is a compound (B2) represented by the general formula (3), wherein the weight ratio of (A component) to (B component) is A / B = 30 / 70- 8
A germicidal conveyor lubricant characterized by being 0/20. General formula (1) (Wherein, R ₁ is a linear or branched alkyl or alkenyl group having 8 to 20 carbon atoms; A is an alkylene group having 2 to 4 carbon atoms; n is a number of 1 to 4; m is 1 or 2 M is a hydrogen atom, an alkali metal, an alkaline earth metal, ammonia or an amine.) General formula (2) (Wherein, R ₂ , R ₃ , R ₄ and R ₅ are the same or different and each is a linear or branched alkyl group or alkenyl group having 1 to 22 carbon atoms; k is an integer of 1 to 4; X ^k- is It is a k-valent anion of an organic carboxylic acid.) General formula (3) (Wherein, R ₆ , R ₇ and R ₈ are the same or different and each is a linear or branched alkyl or alkenyl group having 1 to 22 carbon atoms; Ph is a phenyl group; k is an integer of 1 to 4; X ^{k -} is a k-valent anion of an organic carboxylic acid). 2. The germicidal conveyor lubricant according to claim 1, wherein in the general formula (1), A is an ethylene group. 3. In the general formula (2) or (3), X
The germicidal conveyor lubricant according to claim 1 or 2, wherein ^k- is a k-valent anion of an organic carboxylic acid having a molecular weight of 60 to 600. 4. In the general formula (2) or (3), X
The germicidal conveyor lubricant according to any one of claims 1 to 3, wherein ^k- is a divalent anion of adipic acid and / or sebacic acid. 5. general formula _(2), R 2 and R ₃ is a linear or branched alkyl group having 8 to 12 carbon atoms, R ₄
Bactericidal conveyor lubricant according to any one of claims 1 to 4 R ₅ is a methyl group and. 6. In the general formula (2), R ₂ has 1 carbon atom.
A linear or branched alkyl or alkenyl group having 2 to 20, bactericidal conveyor lubricant according to any one of claims 1 to 4 R _3, R ₄ and R ₅ are methyl groups. 7. In the general formula (3), R ₆ has 8 carbon atoms.
The germicidal conveyor lubricant according to any one of claims 1 to 6, wherein the group is a linear or branched alkyl group or alkenyl group, and R ₇ and R ₈ are methyl groups.