JPS61157599A - Liquid detergent composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid cleaning composition, and more specifically, the present invention relates to a liquid cleaning composition that cleans organic dirt, especially oil, that adheres to household stoves, cooking stoves, ventilation fans, walls around kitchens, plywood, glass, refrigerators, etc. The present invention relates to a liquid cleaning composition suitable for cleaning tough stains that have been altered by heat and oxidation.

Dirt on ventilation fans, walls around the kitchen, plywood, glass, refrigerators, etc. is often caused by oil used during cooking or oil contained in food, which becomes particles that fly up when heated. If these oils are left for a long time, they will be oxidized by heat and oxygen in the air, turning them into a brown sticky resinous substance.

This denatured oil is a strong stain, and strong chemical or mechanical action is required to remove it. Among the most effective chemicals known for this purpose are caustic alkalis such as sodium hydroxide and potassium hydroxide. However, caustic and conventional highly caustic cleaning compositions require significant safety standards for their use. Therefore, it is highly safe.

What is desired is a cleaning agent having low levels of caustic that is effective in removing degraded oil.

Alkali, which is weaker than caustic soda, has less power to hydrolyze degraded oil and cannot be considered an effective cleaning agent.

The inventors of the present invention have conducted extensive research into a cleaning agent that is highly safe and has an excellent ability to remove degraded oil, and as a result, they have decided to use a combination of a surfactant, an alkanolamine, and a small amount of caustic alkali.

The present inventors have discovered that a liquid detergent can be obtained that is excellent not only in the ability to remove degraded oil but also in terms of safety, particularly in terms of irritation to the skin, and has thus come to form the present invention.

That is, the liquid cleaning composition of the present invention has the following (A)
It is characterized by containing component (C).

(A) Alkali metal hydroxide 0.05-0.5 wt% (B) Alkanolamine represented by the following general formula (I) 0.5-10.0 wt% ()IOCnH2n)mNHi m-(I) However, m is an integer of 1 to 3, n is an integer of 2 to 3 (C) surfactant
0.1-10.0wt% Φ(A) component alkali metal hydroxide has the effect of saponifying degraded oil and promoting its removal, and its blending amount is 0.05-10.0wt%.
0.50wt%, preferably 0.10-0.40wt%
It is in the range of 0.05wt%, and the ability to saponify degraded oil is inferior when the formulation is 0.05wt%.

Insufficient cleaning power. If 0.50 wL% or more is added, the irritation to the skin becomes strong, which is not preferable.

As the component (B) of the present invention, an alkanolamine represented by the above general formula (I) is used.

The alkanolamine softens the bonds between the molecules of the denatured oil, and further penetrates between the molecules to promote saponification of the denatured oil by the alkali metal hydroxide, which is the component (A). Its blending amount is in the range of 0.5 to 10.0 wt%, preferably 1.0 to 7.0 wt%, and if it is blended without drops of 0.5 wt%, it promotes the effect of saponifying the denatured oil of component (A). The cleaning power is poor and sufficient cleaning power cannot be obtained. If more than 10.0 wt% of the surfactant is added, the effect will not be improved and it will not be economical, so it is not preferable.6 There is no particular restriction on the surfactant as component (C), and it may include anions, cations, amphoteric and non-containing surfactants. Any ionic surfactant may be used. This exhibits the effect of reducing stickiness after wiping, and its blending amount is in the range of 0.1 to IO, Owt%, preferably 1.0 to 7.0wt%. O1lνt
If the amount is less than 10.0 wt%, the effect of improving stickiness after wiping is poor, and if it is more than 10.0 wt%, the effect will not improve and it is not economical, which is not preferred.

In the present invention, in addition to the above-mentioned essential ingredients, various water-soluble solvents or hydrotropic agents such as lower alcohols and lower alkylbenzenesulfonic acids are blended in order to maintain liquid properties at low or high temperatures, and the product image is improved. It is also possible to add fragrances or pigments to enhance the effect.

According to the liquid cleaning composition of the present invention, degenerated oil stains and the like around the kitchen can be easily removed, and there is no stickiness after wiping. In addition, it is less irritating to the skin, so it is suitable for use as a spray type when used as a undiluted solution, and it can also be used by impregnating non-woven fabrics.

Next, the present invention will be explained in more detail with reference to Examples.
The detergency, stickiness after wiping, and skin irritation in this example were evaluated using the following methods.

Evaluation method Cleaning power A mixture of salad oil and carbon black in a weight ratio of 10,072 was uniformly applied to an iron plate, and then 140
A stain board was obtained by firing at a temperature of ~160°C for 80 to 120 minutes. After applying a liquid detergent to the cloth, a load of 500 g was applied to the cotton knitted cloth and the cloth was reciprocated 5 times, and the state of dirt was visually judged according to the following criteria.

Q: Good stain removal Δ: Stain removal is uneven ×: A sticky wipe that cannot remove most of the stains. Heat vegetable oil at high temperature for a long time to make it viscous, then apply the oil to the plywood. After being left indoors for a long time.

A yellow-brown resin-like oil was used as a stain board. After washing it 5 times in the same manner as in the detergency test, it was washed 5 times with a water-impregnated cotton melias with a 150% wringing rate, and the cleaning agent was wiped off and the wiped surface was touched with hands. Stickiness was evaluated.

Q...No stickiness Δ...Slightly sticky ×...Kana sticky skin stinging (I1 [Moa)] - Prepare a 5% aqueous solution of detergent and keep the temperature of the solution at 30℃. 20
After soaking the hands for a minute, they were thoroughly washed with water.

The condition of the hands of the five subjects was visually judged one day later according to the following criteria, and the average score was shown.

5 points... No rough hands 4 points... Slight rough hands 3 points... Slight rough hands 2 points... Considerable rough hands 1 point... Extremely rough hands The detergency, stickiness, and skin irritation were examined by changing the respective components, their composition ratios, and added components in Examples and Comparative Examples (A), (B, and C). The results are shown in the following table. Samples Nos. 1 to 8 correspond to examples of the present invention, and Nos. 9 to 11 correspond to comparative examples.

(Margin below)

Claims (1)

[Claims] 1. (A) 0.05 to 0.5 wt% of alkali metal hydroxide (B) 0.5 to 10.0 wt% of alkanolamine represented by the following general formula (I) (HOC_nH_2_n)_mNH_3_m ...(
I) A liquid cleaning composition characterized in that m is an integer of 1 to 3, and n is an integer of 2 to 3. (C) A liquid detergent composition containing 0.1 to 10.0 wt% of a surfactant.