JP2022126512A - liquid detergent composition - Google Patents

Abstract

To provide a liquid detergent composition which is environmentally friendly and excellent in detergency.SOLUTION: There is provided a liquid detergent composition which comprises (a) 5 wt.% or more and 10 wt.% or less of a fatty acid potassium or a mixture of a fatty acid potassium and a fatty acid sodium, (b) 6 wt.% or more and 20 wt.% or less of hexylene glycol, (c) 5 wt.% or more and 10 wt.% or less of an alkali metal hydroxide and (d) water.SELECTED DRAWING: None

Description

Applied for application of Article 30, Paragraph 2 of the Patent Law On November 12, 2020, sold at Hankyu Oasis Co., Ltd. Kisera Kawanishi store

The present invention relates to liquid detergent compositions.

In recent years, businesses that manufacture and sell food have adopted the HACCP (Hazard Analysis and Critical Control Point) method, analyzing the factors that cause hazards in the food manufacturing process and managing them most efficiently. A management method to ensure safety by continuously managing is being studied. The oil component solidifies and adheres to the floors of food stores and the like, which promotes breeding of insect pests such as cockroaches. In order to suppress the occurrence of such pests, it is necessary to remove the oil component adhering to the floor and keep the floor clean. For this reason, the floors of food stores and the like are regularly washed using a dedicated cleaning agent. As a dedicated cleaning agent, for example, Patent Document 1 (Japanese Unexamined Patent Application Publication No. 2001-311093) discloses a floor cleaning agent composition capable of suppressing damage to a resin wax coating film.

In the kitchens of supermarkets and the like, a large amount of oils and fats are used for cooking to produce foods. Fats and oils include vegetable oils such as rapeseed oil and shortening, which is artificial lard. The area near the waist wall and the floor under the cooking table and refrigerator, which are places that are difficult to clean in the kitchen, are covered with oils and fats on the floor during cooking and cleaning and cleaning the utensils after work. It flows down, adheres, diffuses and enters. When it accumulates as oil stains in the kitchen and solidifies and becomes rancid, it becomes an attractant to pests such as cockroaches.

In addition, the dust and oil stains in stores such as supermarkets have a darkened composite color due to the adhesion of fine particles of petroleum soot floating in the air in addition to the oil smoke stains of vegetable oil discharged from the kitchen. It's dirty.

However, daily kitchen cleaning could not be done completely with only synthetic surfactant detergents. Most of the synthetic detergents that have been used in the past mainly consisted of sodium linear alkylbenzene sulfonate (LAS). LAS is insufficient for decomposing fats and oils because it has no saponifying action on fats and oils. Grease that adheres to the inside of the drain port on the floor or the inner wall of the drain pipe connected to the grease trap solidifies and clogs, causing poor drainage. Furthermore, there is also the problem of excess oils and fats leaking out of kitchen grease traps and clogging public sewers.

Under these circumstances, the detergent that began to be used in kitchens after LAS is a strong alkaline detergent, which is obtained by adding sodium hydroxide and potassium hydroxide as saponifying agents to LAS to increase the detergency against greasy stains. This strong alkaline detergent has high detergency, but is also highly dangerous to the human body.

Synthetic detergent researchers point out the danger of LAS to the human body (Sakashita Sakae, "Synthetic Detergent", Metamol Publishing Co., Ltd., 2002, Tokyo).

Alkali metal hydroxides such as potassium hydroxide are excellent agents for saponifying fats and oils, but they corrode proteins and destroy cells. Detergents that combine LAS and alkali metal oxides are very dangerous.

Therefore, detergents required in kitchens and factories where food is produced are required to have excellent detergency against greasy stains and to be safe for humans.

The applicant of the present application repeated experiments to confirm the detergency of solidified fats and oils on the floor surfaces of kitchens, stores, etc. while changing the components of the liquid detergent composition, and invented the following liquid detergent composition. ing.

The liquid detergent composition according to the first aspect is
(a) 5% by weight or more and 10% by weight or less of fatty acid potassium, or a mixture of fatty acid potassium and fatty acid sodium;
(b) 6 wt% or more and 20 wt% or less of hexylene glycol;
(c) 5 wt% or more and 10 wt% or less of an alkali metal hydroxide;
(d) water;
including.

A liquid detergent composition according to the second aspect is the liquid detergent composition according to the first aspect,
moreover,
(e) 0.5% to 2% by weight of a sequestering agent;

A liquid detergent composition according to a third aspect is the liquid detergent composition according to the second aspect,
The sequestering agent of (e) is sodium gluconate.

A liquid detergent composition according to a fourth aspect is the liquid detergent composition of the first to third aspects, further comprising:
(f) 1% by weight or more and 3% by weight or less of sodium metasilicate nonahydrate;

A liquid detergent composition according to a fifth aspect is the liquid detergent composition of the first to fourth aspects, further comprising:
(g) 0.5% to 1.5% by weight of benzyl alcohol;

A liquid detergent composition according to a sixth aspect is the liquid detergent composition of the first to fifth aspects,
moreover,
(h) 3 to 10% by weight of isopropyl alcohol, ethanol, or a mixture of isopropyl alcohol and ethanol;

A liquid detergent composition according to a seventh aspect is the liquid detergent composition according to the sixth aspect, wherein (h) is 3% by weight or more and 5% by weight or less of isopropyl alcohol.

A liquid detergent composition according to an eighth aspect is the liquid detergent composition of the first to seventh aspects,
moreover,
The alkali metal hydroxide of (c) is
(c1) 3% by weight or more and 5% by weight or less of potassium hydroxide;
(c2) 3 wt% or more and 5 wt% or less of sodium hydroxide;
including.

The liquid detergent composition of the ninth aspect is
(a) 5% by weight or more and 10% by weight or less of fatty acid potassium, or a mixture of fatty acid potassium and fatty acid sodium;
(b) 8% to 12% by weight of hexylene glycol;
(c1) 3% by weight or more and 5% by weight or less of potassium hydroxide;
(c2) 3 wt% or more and 5 wt% or less of sodium hydroxide;
(e) 0.5 wt% or more and 2 wt% or less sodium gluconate;
(f) 1 wt% or more and 3 wt% or less of sodium metasilicate nonahydrate;
(g) 0.5% to 1.5% by weight of benzyl alcohol;
(h) 3% or more and 5% or less by weight of isopropyl alcohol;
(d) balance water;
including.

The liquid detergent of the present invention contains a high concentration of potash soap (potassium fatty acid), which has been used for a long time, as a surface active agent which is a main component. Weakly alkaline potash soap has excellent detergency against oil stains. In addition, potash soap has excellent detergency against not only plant-based soot stains, but also stains combined with petroleum soot particles.

The liquid detergent of the present invention further contains an alkali metal hydroxide and hexylene glycol. Alkali metal hydroxide further improves the detergency of potash soap. Hexylene glycol, as a solvent, improves the solubility of potash soap. Hexylene glycol also improves the protective effect on human skin, especially reduces the risk from alkali metal hydroxides and improves safety.

The liquid detergent of the present invention is a detergent that has excellent detergency against greasy stains and is safe for humans.

The liquid detergent composition of the present invention contains (a) potash soap, (b) hexylene glycol, and (c) alkali metal hydroxide as main components.

Conventional soap-based liquid detergent compositions generally have low concentrations of soap, usually less than 2% by weight. A liquid detergent with such a low soap concentration was weak in detergency. However, when trying to add a large amount of the soap component, there were problems such as the component solidifying and the viscosity increasing. On the other hand, the applicants found that by adding 6% to 20% by weight of hexylene glycol to the solvent, the increase in viscosity can be suppressed even if the concentration of conventional soap is tripled. Found it. In addition, the inventors have succeeded in developing a liquid detergent composition that has remarkably high detergency and insecticidal power as compared with conventional soap-based liquid detergents.

(a) Potassium soap is fatty acid potassium or a mixture of fatty acid potassium and fatty acid sodium. The more the component of fatty acid potassium, the more liquid it becomes, but it may contain fatty acid sodium. The potash soap may be naturally derived or industrially synthesized. Naturally derived potash soaps usually contain glycerin. Potassium soap raw materials may be animal fat or vegetable oil. Fatty acids constituting fatty acid potassium or fatty acid sodium may be saturated fatty acids, unsaturated fatty acids, or mixtures thereof. Saturated fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid and arachidic acid. Unsaturated fatty acids include palmitoleic acid, oleic acid, linoleic acid, linolenic acid, arachidonic acid and the like.

(a) When potash soap is a mixture of fatty acid potassium and fatty acid sodium, the proportion of fatty acid potassium in the mixture is, for example, 50% by weight or more and less than 100% by weight.

The proportion of (a) potash soap in the liquid detergent composition is 5% by weight or more and 10% by weight or less.

Potassium soap is highly safe to the human body. Weakly alkaline potash soap has excellent detergency against oil stains. In addition, potash soap has excellent detergency against not only plant-based soot stains, but also stains combined with petroleum soot particles.

Naturally derived potash soap contains glycerin. Glycerin has the role of protecting the skin from alkaline components.

The liquid detergent composition of the present invention contains (b) hexylene glycol ( _CH3 ) _2C (OH) _CH2CH (OH) _CH3 . Hexylene glycol is a dihydric alcohol. Hexylene glycol, as a solvent, improves the solubility of potash soap. Hexylene glycol, like glycerin, improves the protective effect on human skin, especially reduces the risk posed by alkali metal hydroxides, and improves safety.

(b) The concentration of hexylene glycol is 6% by weight or more and 20% by weight or less. It is more preferably 8 wt % or more and 15 wt % or less, and still more preferably 8 wt % or more and 12 wt % or less.

The liquid detergent composition of the present invention contains (c) 5% by weight or more and 10% by weight or less of an alkali metal hydroxide. Alkali metal hydroxide enhances detergency. The alkali metal hydroxide may contain (c1) potassium hydroxide and (c2) sodium hydroxide. (c1) Potassium hydroxide may be 3% by weight or more and 5% by weight or less. More preferably, it is 4% by weight or more and 5% by weight or less. (c2) Sodium hydroxide may be 3% by weight or more and 5% by weight or less. More preferably, it is 4% by weight or more and 5% by weight or less.

The liquid detergent composition of the present invention is an aqueous solution. That is, the liquid detergent composition contains (d) water. (d) Water is 50% by weight or more and 80% by weight or less. More preferably, it is 60% by weight or more and 70% by weight or less.

The liquid detergent composition of the present disclosure may further contain another alcohol as a solvent. Examples of alternative alcohols are (h) isopropyl alcohol, ethanol, or a mixture of isopropyl alcohol and ethanol. (h) The composition of another alcohol is 3% by weight or more and 10% by weight or less. (h) When the other alcohol is isopropyl alcohol, it is 3% by weight or more and 5% by weight or less.

The liquid detergent composition of the present disclosure may more preferably contain (g) benzyl alcohol. Benzyl alcohol C ₆ H ₅ CH ₂ OH is an evaporation inhibitor for alcohol components (b) and (h). The composition of benzyl alcohol is 0.5% by weight or more and 1.5% by weight or less. More preferably, it is 0.5% by weight or more and 1.2% by weight or less.

The cleaning agent may further contain (f) sodium metasilicate nonahydrate in addition to (a) soap, (c1) potassium hydroxide, and (c2) sodium hydroxide. By including sodium metasilicate _nonahydrate Na ₂ O ₃ Si.9H ₂ O, the detergency is further increased. The composition of sodium metasilicate nonahydrate is 1% by weight or more and 3% by weight or less. More preferably, it is 1.5% by weight or more and 2.5% by weight or less.

The liquid detergent composition of the present disclosure may further comprise a sequestering agent. Sequestering agents prevent the formation of metal soaps. Sequestering agents may include (e) sodium gluconate _HOCH2 (CHOH) _4COONa . Sodium gluconate is suitable for use in the neutral to alkaline range and has a high capacity as a sequestering agent. It also has the feature of good biodegradability. The composition of sodium gluconate is 0.5% by weight or more and 2% by weight or less. More preferably, it is 0.5% by weight or more and 1.5% by weight or less.

(Example 1)
Each of the following ingredients were mixed at ambient temperature to produce a 100 kg liquid tableting composition.
(a1) 7.5 wt% potassium fatty acid (a2) 2.5 wt% sodium fatty acid (b) 10 wt% hexylene glycol (c1) 4.5 wt% potassium hydroxide (c2) 4.5 wt% sodium hydroxide (d) 61 wt% water (e) 1 wt% sodium gluconate (f) 3 wt% sodium metasilicate nonahydrate (g) 1 wt% benzyl alcohol (h) 5 Weight % Isopropyl Alcohol When the above composition was tested on oil stains stuck to the floor surface, it showed good detergency. Also, when it was directly applied to cockroaches, the cockroaches stopped moving and died instantly.
Also, the above composition was applied to human skin and left for half a day, but there was no particular change in the skin.

(Example 2)
Each of the following ingredients were mixed at ambient temperature to produce a 100 kg liquid tableting composition.
(a) 5.3% by weight of a mixture of fatty acid potassium and fatty acid sodium (b) 10% by weight hexylene glycol (c1) 4.5% by weight potassium hydroxide (c2) 4.5% by weight hydroxide sodium (d) 66.7% by weight water (e) 1% by weight sodium gluconate (f) 2% by weight sodium metasilicate nonahydrate (g) 1% by weight benzyl alcohol (h) 5% by weight Isopropyl alcohol When the above composition was tested on oil stains adhering to the floor surface, it showed good detergency. Also, when it was directly applied to cockroaches, the cockroaches stopped moving and died instantly.

(How to use the liquid detergent composition)
The liquid detergent composition of the present disclosure is used as follows for cleaning the floors of kitchens, stores, etc. where food is manufactured or sold, and for removing pests. Here, pests are mainly cockroaches.

First, a liquid detergent composition is sprayed to exterminate cockroaches that are conspicuous and prowl around the kitchen. Cockroaches that come into contact with the liquid detergent composition stop moving and die instantly.

Next, remove cockroaches lurking in the kitchen. Cockroaches inhabit and multiply in places where there is food residue such as paper, plastic garbage, fried chicken, fried shrimp, etc. on the work table in the kitchen, under the refrigerator, or on the floor near them. It is often seen increasing. A large amount of liquid detergent composition is jetted onto the floor surface of a kitchen to soften the oil stains on the floor surface. And pick up the garbage.

Next, water is sprayed onto the floor surface onto which the liquid detergent composition has been sprayed. The water is preferably discharged at an angle of 45° with respect to the floor surface. Most of the grease stains on the floor are readily dissolved in running water and can be washed off. If cockroaches are lurking at this time, most of them will come out dead.

If a mass of greasy dirt that cannot be removed by the above operations remains on the floor surface, the liquid detergent composition is sprayed again against the mass of greasy dirt. If necessary, use a floor cleaning pad or the like to clean and polish the floor. A floor surface cleaning pad is a nylon fiber to which an abrasive is adhered.

Normally, a drain pipe in a kitchen is connected to a grease trap, and waste water discharged from the kitchen through the drain pipe flows into the grease trap and stays there temporarily. Cockroaches may hide or live and breed on the inside of the lid of the grease trap or on the surface of the inner wall where oil stains are attached. Such cockroaches travel back and forth in the kitchen via drain pipes. Prepare a liquid detergent composition on a daily basis, and immediately spray the liquid detergent composition to the cockroaches when they are found during daily inspection of the kitchen or during the work of removing garbage from the strainer. can kill cockroaches.

The liquid detergent composition of the present invention is effective for cleaning ceramic floors, stainless steel countertops, shelves, etc. in kitchens where food is produced or stores where food is sold, and for removing pests.

JP-A-2001-311093

(Example 1)
The following ingredients were mixed at ambient temperature to produce 100 kg of liquid detergent composition.
(a1) 7.5 wt% potassium fatty acid (a2) 2.5 wt% sodium fatty acid (b) 10 wt% hexylene glycol (c1) 4.5 wt% potassium hydroxide (c2) 4.5 wt% sodium hydroxide (d) 61 wt% water (e) 1 wt% sodium gluconate (f) 3 wt% sodium metasilicate nonahydrate (g) 1 wt% benzyl alcohol (h) 5 Weight % Isopropyl Alcohol When the above composition was tested on oil stains stuck to the floor surface, it showed good detergency.
Also, when it was directly applied to cockroaches, the cockroaches stopped moving and died instantly.
Also, the above composition was applied to human skin and left for half a day, but there was no particular change in the skin.

(Example 2)
The following ingredients were mixed at ambient temperature to produce 100 kg of liquid detergent composition.
(a) 5.3% by weight of a mixture of fatty acid potassium and fatty acid sodium (b) 10% by weight hexylene glycol (c1) 4.5% by weight potassium hydroxide (c2) 4.5% by weight hydroxide sodium (d) 66.7% by weight water (e) 1% by weight sodium gluconate (f) 2% by weight sodium metasilicate nonahydrate (g) 1% by weight benzyl alcohol (h) 5% by weight Isopropyl alcohol When the above composition was tested on oil stains adhering to the floor surface, it showed good detergency.
Also, when it was directly applied to cockroaches, the cockroaches stopped moving and died instantly.

Claims (9)

A liquid detergent composition,
(a) 5 wt% or more and 10 wt% or less of fatty acid potassium or a mixture of fatty acid potassium and fatty acid sodium;
(b) 6 wt% or more and 20 wt% or less of hexylene glycol;
(c) 5 wt% or more and 10 wt% or less of an alkali metal hydroxide;
(d) water;
A liquid detergent composition comprising: moreover,
2. The liquid detergent composition of claim 1, comprising (e) from 0.5% to 2% by weight of a sequestering agent. the sequestering agent of (e) is sodium gluconate;
The liquid detergent composition according to claim 2. moreover,
4. The liquid detergent composition according to any one of claims 1 to 3, comprising (f) 1% by weight or more and 3% by weight or less of sodium metasilicate nonahydrate. moreover,
5. The liquid detergent composition according to any one of claims 1 to 4, comprising (g) 0.5% by weight or more and 1.5% by weight or less of benzyl alcohol. moreover,
6. The liquid detergent composition according to any one of claims 1 to 5, comprising (h) 3 wt% or more and 10 wt% or less of isopropyl alcohol, ethanol, or a mixture of isopropyl alcohol and ethanol. (h) is isopropyl alcohol in an amount of 3 wt% or more and 5 wt% or less;
The liquid detergent composition according to claim 6. The alkali metal hydroxide of (c) is
(c1) 3% by weight or more and 5% by weight or less of potassium hydroxide;
(c2) 3 wt% or more and 5 wt% or less of sodium hydroxide;
The liquid detergent composition according to any one of claims 1 to 7, comprising A liquid detergent composition,
(a) 5% by weight or more and 10% by weight or less of fatty acid potassium, or a mixture of fatty acid potassium and fatty acid sodium;
(b) 8% to 12% by weight of hexylene glycol;
(c1) 3% by weight or more and 5% by weight or less of potassium hydroxide;
(c2) 3 wt% or more and 5 wt% or less of sodium hydroxide;
(e) 0.5 wt% or more and 2 wt% or less sodium gluconate;
(f) 1 wt% or more and 3 wt% or less of sodium metasilicate nonahydrate;
(g) 0.5% to 1.5% by weight of benzyl alcohol;
(h) 3% or more and 5% or less by weight of isopropyl alcohol;
(d) balance water;
A liquid detergent composition comprising: