JPH06116594A - Liquid detergent composition for food industry - Google Patents

Abstract

PURPOSE:To obtain a liquid detergent composition for food industry, comprising caustic soda and/or caustic potash, a specific chelating agent having calcium uptake ability, a glycol ether-based solvent and a surfactant. CONSTITUTION:A liquid detergent composition for food industry comprises (A) 0.1wt.% or more and less than 5wt.% caustic soda and/or caustic potash, (B) preferably 0.1-20wt.% chelating agent having calcium uptake ability selected from a hydroxycarboxylic acid an aminocarboxylic acid, its salt and a water-soluble polymer (e.g. ethylenediaminetetraacetate or polyacrylate), (C) preferably 0.5.-20wt.% glycol ether-based solvent (e.g. diethylene glycol monobutyl ether or propylene glycol monopropyl ether) and (D) a surfactant (e.g. polyoxyethylene long-chain alkyl ether) in the weight ratio of B/C/D=0.05-0.4/0.1-0.8/0.1-0.6 and in 3-50wt.% total amounts of the component B to the component D.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to liquid cleaning for the food industry, which can easily remove stains adhering to the equipment of processing plants for meat, marine products and garden products, manufacturing plants for dairy products and beverages, and machinery. Agent composition.

[0002]

2. Description of the Related Art As a detergent for the food industry, an alkaline detergent containing an alkali agent such as caustic soda, caustic potash, sodium silicate and sodium carbonate, and a surfactant has been known. The cleaning action is performed by saponifying oil stains with an alkaline agent, emulsifying with a surfactant, dispersing, and solubilizing action.

For the purpose of enhancing the cleaning effect, a strong alkaline agent,
Detergent compositions having an increased content of surfactant are already known, but the surfactant and other components are dissolved by the inorganic strong alkaline agent to form a strong electrolyte concentrated solution, and the water of hydration necessary for dissolution is obtained. It is deprived and components are deposited due to the salting-out effect, and it is very difficult to obtain a uniform and high-concentration liquid detergent composition, and it is also possible to add a solvent such as a solvent or a chelating agent to the detergent for improving the detergency. Almost impossible.

Further, in the field of food industry, the cleaning agent is rarely used as an undiluted solution, and is mainly diluted with tap water at the time of use. When a conventional detergent is used in such a washing method, a fatty acid salt saponified by an alkaline agent and a polyvalent metal ion such as Ca ² + and Mg ² + present in tap water react with each other to cause poor solubility. Since the metal soap of No. 3 is produced, not only the detergency is deteriorated, but also the surface of the object to be washed repels water, resulting in a poor finish.

[0005]

DISCLOSURE OF THE INVENTION The present invention provides a liquid detergent composition for the food industry, which is excellent in detergency against stains related to the food industry and excellent finish on the surface to be washed.

[0006]

The liquid detergent composition for food industry of the present invention comprises the following (a), (b), (c),
The weight ratio of each component of (d) is (b) / (c) / (d) =
0.05 to 0.4 / 0.1 to 0.8 / 0.1 to 0.6, and 3 to 50% by weight as a total blending amount of the three components (b), (c) and (d). It is characterized by including in the amount of. (A) Caustic soda and / or caustic potash: 0.1% by weight or more and less than 5% by weight. (B) A chelating agent having a calcium-capturing ability selected from hydroxycarboxylic acids, aminocarboxylic acids or salts thereof, or water-soluble polymers. (C) Glycol ether solvent. (D) Surfactant.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The caustic soda and / or caustic potash of the component (a) has a function of enhancing the solubility of oil stains as a fatty acid salt mainly by a saponification action and promoting the removal thereof. 1 to less than 5% by weight, preferably 0.5
~ 4% by weight.

The chelating agent having a calcium-capturing ability as the component (b) is a fatty acid salt produced by saponifying caustic soda and / or caustic potash as the component (a) when diluting the detergent, and a tap water. It has the effect of suppressing the formation of metallic soap due to the reaction with polyvalent metal ions in water (eg Ca ² +, Mg ² +), further enhancing the cleaning effect and improving the finish of the cleaned surface. Is 0.1-2
It is preferably 0% by weight, more preferably 0.5 to 15% by weight.

Examples of the chelating agent as the component (b) include hydroxycarboxylic acids such as malic acid, citric acid, gluconic acid and heptonic acid and salts thereof; iminodiacetic acid, nitrilotriacetic acid, ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid and triethylenetetramine. Hexaacetic acid,
Aminopolycarboxylic acids such as cyclohexane-1,2-diaminetetraacetic acid and N-hydroxyethylethylenediaminetriacetic acid and salts thereof; polyacrylic acid, acrylic acid-maleic acid copolymers, styrene-maleic acid copolymers, Styrene sulfonic acid-maleic acid copolymer,
Examples thereof include water-soluble polymer acids and salts such as an isoamylene-maleic anhydride copolymer.

The glycol ether type solvent as the component (c) penetrates between the molecules of the oil stain, softens the bond between the molecules, accelerates the saponification action of the component (a) and the oil stain, and is soluble. Has the effect of increasing the blending amount of 0.5 to 20
Weight% is preferable, and 1 to 15 weight% is more preferable.

Examples of the glycol ether solvent as the component (c) include ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, ethylene glycol monohexyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, ethylene glycol dimethyl ether, diethylene glycol methyl butyl ether, diethylene glycol. Diethyl ether, propylene glycol monopropyl ether, propylene glycol monobutyl ether, dipropylene glycol monopropyl ether, dipropylene glycol monobutyl ether, ethylene glycol propylene glycol monobutyl ether, 3
-Methyl-3-methoxybutanol and the like can be mentioned.

The surfactant as the component (d) has a function of penetrating into soil, wetting, emulsifying and solubilizing, and its compounding amount is 0.
It is preferably 5 to 20% by weight, more preferably 1 to 10% by weight.

As the surfactant, straight chain or branched chain alkyl (C ₈ -C ₂₂ ) benzene sulfonate, long chain alkyl (C ₈ -C ₂₂ ) sulfonate, long chain olefin (C
₈ -C ₂₂₎ sulfonate, a long chain alkyl (C _{8 ~C 22)}
Sulfates, polyoxyethylene (p = 1 to 6) alkyl (C ₈ ~C ₂₂₎ ether sulfate, polyoxyethylene (p = 1 to 10) alkyl (C ₈ ~C ₁₈₎
Phenyl ether sulfate, alkyl (C ₈ -C
₂₂ ) Diphenyl ether disulfonate, carbon number 10
24 saturated and / or unsaturated fatty acid salts, long-chain monoalkyl, dialkyl or sesquicarbonate alkyl (C ₈ ~
C ₂₂ ) phosphate, polyoxyethylene (p = 1 to 6) monoalkyl, dialkyl or sesquialkyl (C ₁₁ to
C ₂₂ ) Anionic surfactant such as phosphate; polyoxyethylene (p = 1 to 20) long chain alkyl (C _{8 to} C ₂₂ ) ether, polyoxyethylene (p = 1 to 20) alkyl (C ₈ To C ₁₈ ) phenyl ether, higher fatty acid alkanolamide or alkylene oxide adduct thereof, nonionic surfactant such as long chain type tertiary amine oxide (C _{12 to} C ₁₄ ); amino acid type, alkyl sulfobetaine, alkyl acetate betaine And betaine-type amphoteric surfactants, imidazoline-type amphoteric surfactants and the like. Where p
Indicates the average number of moles of oxyethylene added.

Further, the compounding ratio of the chelating agent having the calcium-capturing ability of the component (b) / the glycol ether solvent of the component (c) / the surfactant of the component (d) is (b) / weight ratio. (C) / (d) = 0.05 to 0.4 / 0.
1-0.8 / 0.1-0.6, preferably 0.15-
The range is 0.3 / 0.1 to 0.6 / 02 to 0.5.
Further, the total amount of the three components is (b) + (c) + (d) = 3 to
The amount is 50% by weight, preferably 10 to 30% by weight.

If the amount ratio of these three components is out of the above range, the cleaning performance and the finishing performance of the cleaned surface deteriorate. The liquid detergent composition for food industry of the present invention comprises (a) to (a) above.
It is obtained by blending the component (d) as an essential component, and further, an optional component can be blended if necessary. These optional ingredients include hydrotropes,
Examples include bactericides, antiseptics, pigments, and fragrances.

[0016]

INDUSTRIAL APPLICABILITY According to the present invention, a liquid detergent composition for the food industry is prepared by blending caustic soda and / or caustic potash with a specific chelating agent having a calcium capturing ability, a glycol ether solvent and a surfactant. Thus, excellent cleaning performance and finish of the object to be washed can be obtained.

[0017]

[Examples] Liquid detergent compositions for food industry having the respective compositions shown in Tables 1 to 3 were prepared, and the stability of the composition was measured by the following method.
The cleaning performance was evaluated, and the results are shown in Tables 1 to 3.

(1) Detergency against denatured oil and fat stain Temper oil was heated at 130 ° C. for 2 hours, and then carbon black was mixed at 0.3% by weight to 250 mm.
Apply 2g on a 250mm stainless steel plate, 120 ° C,
It was treated for 20 minutes to give a dirty plate. To this stock solution and water solution of detergent 1 g / 12cm ² coating subjected, lightly rubbed five times with a cotton knitted, visually determining the removal state of fouling by the following criteria. ◎: Very good dirt removal ○: Good dirt removal △: Uneven dirt removal ×: Almost no dirt removal

(2) Finishability of the surface to be washed With 6 sheets of stainless steel (25 × 75 mm, SUS-304) as one set, the amount of pork fat kept at 50 ° C. was 0.1 g / sheet, and the amount was about 55 mm. Up to the point. This at 25 ℃
After leaving it for 3 hours, it was washed under the following conditions using a linatsu improved detergency test device of JIS-K-3370, and the surface finish was visually judged.

Washing conditions Water used: tap water, detergent concentration: 1%, amount of washing liquid: 700
ml, washing temperature: 25 ± 1 ° C., washing time: 3 minutes, rinsing condition Water used: tap water, water amount: 700 ml, temperature: 25 ± 1
C, time: 20 seconds The criteria for judgment are as follows. ◎: Very good finish ○: Good finish △: Slightly bad ×: Poor finish

[0021]

[Table 1] Comparative Example Inventive Product Sample No. 1 2 2 3 4 Composition (wt%): (a) Component Caustic soda 4 4 4 4 (b) Component Ethylenediamine tetra-5 5 5 Acetic acid 4 soda (c) Component Diethylene glycol 7-7 7 Monobutyl ether (d) component Polyoxyethylene (p = 8) 3 3-3 Nonyl phenyl ether Optional component Sodium toluene sulfonate 5 5 5 5 Ion-exchanged water balance Total blending amount (b) + (c) + ( d) 10 8 12 15 [wt%] Weight ratio: (b) component 0 0.63 0.42 0.30 (c) component 0.70 0 0.58 0.47 (d) component 0.30 0.37 0 0.23 Evaluation: Cleaning performance Stock solution ◎ △ ○ ◎ 30% solution △ △ △ ○ Finishing of the surface to be washed △ △ △ ◎

[0022]

[Table 2]Invention product Sample No. 5 6 7 8 9 10 Composition (wt%): (a) component Caustic potassium 3 --- 213 Caustic soda-4.5 3 2.3 --- (b) Component Isoamylene-maleic anhydride-25--1-sodium acid acid copolymer (MW8000) Sodium polyacrylate (MW2500) − − − 3 − − 3 soda citric acid 6 − 1 − 2 − (c) Component C_FourH₉O (EO)₂H 10 − 4 − − 5 C₃H₇O (PO) H-7--15-C_FourH₉O (EO) (PO)₂H − − − 3 − − (d) Component C₁₄α-Olefin Sulfonic Acid 2-5 5 3 1 Soda Polyoxyethylene (p = 8) 2 3 − − − Secondary alcohol (C₁₂~ C₁₄) Polyoxyethylene (p = 15) − − 5 − − − Nonylphenyl ether Optional component Sodium toluene sulfonate 5 5 5 5 5 5 Ethanol − − − − 3 1 Ion exchange water balance Total compounding amount (b) + (c) + (d) [wt%] 20 12 20 11 20 7 Weight ratio: (b) component 0.30 0.17 0.30 0.27 0.10 0.14 (c) component 0.50 0.58 0.20 0.27 0.75 0.71 (d) Component 0.20 0.25 0.50 0.46 0.15 0.14 Evaluation: Cleaning performance ◎ ◎ ◎ ◎ ◎ ○ ◎ Stock solution ○ ○ ○ ○ ○ ○ 30% solution ◎ ◎ ◎ ◎ ◎ ○ ○ Note) EO: ethylene oxide, PO: propylene oxide in the table

[0023]

[Table 3]Comparative example Sample No. 11 12 13 14 Composition (wt%): (a) component caustic potash 4 − − 25 caustic soda − 0.03 3 − (b) component isoamylene-maleic anhydride − − − 10 sodium acid soda copolymer (MW8000) polyacrylic acid soda (MW2500) − 5 − − Citric acid 3 soda 0.05 − 3 − (c) Component C_FourH₉O (EO)₂H730.2-C₃H₇O (PO) H − − − − C_FourH₉O (EO) (PO)₂H − − − 4 (d) component C₁₄α-Olefin sulfonic acid-5-0.2 Soda polyoxyethylene (p = 8) --- Secondary alcohol (C₁₂~ C₁₄) Polyoxyethylene (p = 15) 3 − − 0.1 Nonylphenyl ether Optional component Sodium toluene sulfonate 5 5 5 5 Ethanol − − − − Ion exchange water balanceTotal compounding amount (b) + (c) + (d) [wt%] 10.05 13 3.2 14.3 Weight ratio: (b) component 0.01 0.38 0.94 0.70 (c) component 0.69 0.23 0.06 0.28(d) ingredient 0.30 0.38 0 0.02 Evaluation: Cleaning performance ◎ △ △ ○ Undiluted solution △ △ △ △30% solution △ △ ○ △  Note) EO: ethylene oxide, PO: propylene oxide in the table

Claims (3)

[Claims] 1. (a) Caustic soda and / or potassium hydroxide: 0.1% by weight or more and less than 5% by weight (b) Hydroxycarboxylic acid, aminocarboxylic acid or a salt thereof, or a calcium-capturing ability selected from water-soluble polymers. The chelating agent has (c) a glycol ether solvent (d) a surfactant, and the compounding ratio of the components (b), (c) and (d) is (b) / (c) / (d) in a weight ratio. = 0.05-0.4 /
In the range of 0.1-0.8 / 0.1-0.6,
A liquid detergent composition for food industry, wherein the total amount of the components (b), (c) and (d) is in the range of 3 to 50% by weight. 2. The component (b) is selected from ethylenediaminetetraacetate, citrate, isoamylene-maleic anhydride copolymer, polyacrylic acid salt, and acrylic acid-maleic acid copolymer. The liquid detergent composition for food industry according to claim 1, wherein the liquid detergent composition is one or more kinds. 3. The liquid detergent for food industry according to claim 1, wherein the component (c) is at least one selected from diethylene glycol monobutyl ether, ethylene glycol dipropylene glycol monobutyl ether, and propylene glycol monopropyl ether. Composition.