JPH0376797A - Liquid detergent composition - Google Patents

Abstract

PURPOSE:To obtain the title composition of a microemulsion type which is safe to the human body, does not corrode metal and has good detergency on an oil stain, etc., in a kitchen by compounding a surfactant, a specific organic solubilizing assistant, a specific oily substance and water each in a predetermined amount. CONSTITUTION:The title composition comprises 1-20wt.% (% hereinafter) surfactant (e.g. sodium oleate), 20-60% organic solubilizing assistant shown by formula I (where one ore more of R and R' represent 1-6C alkyl and the rest is H, or the sum of the number of carbon atoms is 7 or less when both of R and R' are alkyl; (m) and (n) are each 0 to 4, and (m+n) is 1 to 6) or formula II (where (n) is 5 to 25), 0.1-30% one or more oily substances (e.g. n-decane) selected from the group consisting of animal and vegetable oils, paraffinic hydrocarbons, naphthenic hydrocarbons, terpenic oil and aliphatic carboxylic acid esters, and 30-70% water.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to novel residential liquid cleaning compositions. More specifically, the present invention uses alkaline agents, chlorinated solvents, etc., especially for severe oil stains in the kitchen, stains on ventilation fans, floors, walls, and windows of living rooms, and stains in bathrooms and toilets. The present invention relates to a microemulsion type liquid cleaning composition that can exhibit excellent cleaning power even without use.

Conventional technology Dirt in the kitchen is caused by animal and vegetable oils used during cooking that adhere to walls, windows, ventilation fans, furniture, etc., and over time are subject to denaturation by heat and light, oxidation by air, and hydrolysis by water. It becomes a resin-like modified oil, which is generated when mixed with indoor dust, etc.

Conventionally, methods used to deal with such stains include surfactants, alkaline agents such as sodium hydroxide, potassium hydroxide, and alkanolamines, inorganic and organic builders, and organic glycols and chlorinated solvents. is used as a cleaning agent. The cleaning effect of such detergents is exerted by, for example, the alkaline agent reacting with fatty acids produced by denaturation of oils and fats to make the soap raw, and also by the effects of emulsification and dispersion by surfactants and solvents.

However, alkaline cleaners can cause damage if they come into contact with the skin, especially if they accidentally get into the eyes, and if used on metal kitchen equipment, they can also cause corrosion. However, because the surfactant emulsifies the oil too much, it takes time and effort to remove the emulsion after washing. Furthermore, even in the case of chlorinated solvents, there are concerns about corrosion of metal kitchen equipment and environmental contamination, and their use is therefore undesirable.

On the other hand, stains in the bathroom are mainly extracted from fatty acid calcium, free fatty acids, and glycerides, and cleaning is usually done by using an acidic substance such as hydroxycarboxylic acid to decompose and remove the main component, fatty acid calcium. agent is used. However, even in this case, the surfactant emulsifies the oil stain components, which is time-consuming, and since the cleaning agent is acidic, it may have an adverse effect on the skin, and hypochlorous acid-based When mixed with alkaline bleach, chlorine gas is generated, which is harmful to health.

On the other hand, a liquid cleaning agent based on an organic solvent with foaming properties has been proposed (Japanese Patent Application Laid-Open No. 72905/1982), but since this cleaning agent contains inorganic bilge and a chlorinated solvent as essential components, The problems mentioned above cannot be avoided, and the solvent odor remains during use, and the cleaning effect is lower than that of other cleaning agents that use alkaline agents, and there is no risk of solvent remaining after cleaning. It has some drawbacks.

Problems to be Solved by the Invention The present invention overcomes the drawbacks of conventional household liquid cleaning agents, and uses a chlorinated solvent that is involved in the corrosion of alkaline earth metals and is irritating to the skin, especially the eyes. The purpose of this invention is to provide a liquid cleaning composition that exhibits an excellent effect on oil stains and stains throughout the house, and which can be easily wiped off.

Means for Solving the Problems The present inventors have developed a method that can effectively remove significant oil stains in the kitchen and stains in the bathroom, is safe for the human body, and does not cause metal corrosion. As a result of extensive research to develop a liquid cleaning agent for residential use, we have developed a stable solution by combining oils that are similar to dirt components and have high dissolving power, surfactants, specific organic solubilization aids, and water. It was discovered that by forming a microemulsion, scales can exhibit excellent cleaning effects without using alkaline agents or chlorinated solvents, and based on this knowledge, the present invention was completed.

That is, the present invention provides (A) 1 to 20% by weight of surfactant, (B) general formula (% formula%) (in the formula, at least one of R and R' is an alkyl group having 1 to 6 carbon atoms, and the remainder is If both are hydrogen atoms and are alkyl groups, the sum of their carbon numbers is 7 or less, m is a number from 0 to 4, n is a number from 0 to 4, and the sum of m and n is 1 to 6. or 20 to 60% by weight of an organic solubilizing aid represented by the general formula % ([) (in which n' is a number from 5 to 25), (C)
At least one oily substance selected from animal and vegetable oils, paraffinic hydrocarbons, naphthenic hydrocarbons, terpene oils, and aliphatic carboxylic acid esters 011 to 30% by weight
, and (D) a microemulsion type liquid cleaning composition comprising 30 to 70% by weight of water.

The present invention will be explained in detail below.

In Composition I of the present invention, there are no particular limitations on the surfactant used as component (A), and surfactants conventionally used in residential liquid cleaning agents, such as anionic surfactants and nonionic surfactants, may be used. Any one can be selected from among surfactants, amphoteric surfactants, and the like. Examples of the anionic surfactant include sulfonates such as straight chain or branched alkyl (cm~.) benzenesulfonate, long chain alkane or alkene (Ca~3.) sulfonate, and long chain monoalkyl (CS). -, sulfate-based sulfates such as polyoxyethylene (1 to 6 mol) long chain alkyl ether sulfate, polyoxyethylene (1 to 6 mol) alkyl (C-x*) phenyl ether sulfate, Phosphate series such as long chain monoalkyl, dialkyl or sesquialkyl (cm ~.) phosphates, polyoxyethylene (1 to 6 mol) monoalkyl, dialkyl or sesquialkyl (CS-, 2) phosphates, number of carbon atoms Examples include carboxylates such as saturated or unsaturated fatty acid salts of 10 to 24. Counter ions (cations) of these anionic surfactants include, for example, alkali metal ions such as sodium, potassium, and magnesium, and alkaline earth ions. These include similar metal ions, alkanolamine ions such as monoethanolamine, jetanolamine, and triethanolamine, and ammonium ions.

Examples of the nonionic surfactant include polyoxyethylene (1 to 20 mol) long chain alkyl (C, ~o) ether, polyoxyethylene (1 to 20 mol) alkyl (
C, ~,) phenyl ether, polyoxyethylene polyoxypropylene block polymer, higher fatty acid alkanolamide or its alkylene oxide adduct, etc., and examples of the amphoteric surfactant include amino acid type amphoteric surfactant, alkyl Examples include betaine type amphoteric surfactants such as sulfobetaine and alkyl acetic acid betaine.

These surfactants may be used alone or in combination of two or more, and their blending amount is 1 to 20% by weight, preferably 5 to 15% by weight based on the total amount of the composition. selected within the range. If the amount is less than 1% by weight, the cleaning effect will be insufficient and the object of the present invention cannot be achieved, and if it exceeds 20% by weight, the surfactant will form liquid crystals, the composition will become viscous, and the cleaning effect will be insufficient. There is a tendency for the effectiveness to decrease.

In the composition of the present invention, it is necessary to use an organic solubilization aid represented by the above-mentioned film type (I) or (II) as component (B).

Examples of those represented by the general formula (1) include ethylene glycol monoethyl ether, ethylene glycol mobutyl ether col monohexyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, ethylene glycol dimethyl ether, diethylene glycol methyl butyl ether, diethylene glycol diethyl ether, Flopylene glycol monobutyl ether, dipropylene glycol monobutyl ether, propylene glycol monopropyl ether, dipropylene glycol monopropyl ether, tripropylene glycol monobutyl ether, dipropylene glycol monoethyl ether, c,H,O (C,H.O
)+(CsFIaO)t. rH.

Examples include CHsO(CJ.Oh(CsHsO)+.zcJs).

The addition order and format of ethylene oxide units and propylene oxide units among these are arbitrary, and random addition,
Either block addition is acceptable.

Examples of the -membrane type (II) include polypropylene glycols having a degree of polymerization of 5 to 25.

These organic solubilization aids may be used alone or in combination of two or more, and the blending amount is 20 to 60% by weight, preferably 30 to 60% by weight, based on the total amount of the composition.
It is selected within the range of 50% by weight. If this amount is less than 20% by weight, the cleaning effect will be extremely low and the object of the present invention will not be achieved, and if it exceeds 60% by weight, the composition will become cloudy and unstable, and the odor of the solubilization aid may remain. , the remaining wiping becomes noticeable, which is not desirable.

In the composition of the present invention, component (C) is selected from animal and vegetable oils, paraffin hydrocarbons, naphthenic hydrocarbons, terpene oils, and aliphatic carboxylic acid esters that act as solubilizers for soil substances. It is necessary to use at least one oily substance. Examples of the animal and vegetable oils include beef tallow, pork oil, palm oil, ester, egg yolk oil, mink oil, turdle oil, linseed oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, olive oil, camellia oil, orange oil, and pine oil. Paraffinic hydrocarbons and naphthenic hydrocarbons include, for example, chain or cyclic saturated or unsaturated hydrocarbons having 10 to 22 carbon atoms. Examples of terpene oils include limonene, pinene, and terpene oil, and examples of fatty acid esters include methyl oleate, ethyl oleate, inglovir myristate, isopropyl valmitate, cetyl octoate,
Examples include isocetyl isostearate.

These oils may be used alone or in combination of two or more. The blending amount is selected in the range of 0.1 to 30% by weight, preferably 1 to 10% by weight based on the total amount of the composition. If this amount deviates from the above range, a stable microemulsion cannot be formed.

There are no particular limitations on the method for preparing the microemulsion liquid cleaning composition of the present invention, and it can be prepared according to commonly used methods.

The composition of the present invention may also include various additive components conventionally used in liquid detergents, such as sequestering agents, antioxidants, preservatives, colorants, and fragrances, to the extent that the objects of the present invention are not impaired. , a humectant, etc. can be added as desired.

Function The microemulsion liquid cleaning composition of the present invention has the following properties:
The dissolution and removal effect of the organic solubilizer [component (C), oils] on hydrophobic dirt substances is enhanced by microemulsifying the organic solubilizer.

Generally, a microemulsion has a particle size of 100 to 10
It refers to a transparent or translucent spherical emulsion, or a so-called pi-continuous structure in which surfactants are arranged in layers and water and oil are sandwiched between the eyebrows. Among these microemulsions, those with a picontinuous structure in particular exhibit extremely low interfacial tension with respect to both water and oil, so when they interact directly with dirt or during the cleaning process, they When the structure is formed, the cleaning agent quickly penetrates into the interior of the dirt and the gap between the dirt and the surface, and as a result, the dirt is easily removed from the object to be washed.

Therefore, the present invention uses an oily substance that has a high affinity for dirt in combination with an organic solubilizer to form a pi-continuous structure and exhibit a high cleaning effect.

Examples Next, the present invention will be explained in more detail with reference to examples.
The present invention is not limited in any way by these examples.

The cleaning power of the liquid cleaning composition was evaluated as follows.

(1) Detergent power against denatured oil stains Tempura oil was denatured by heating at 130°C for 2 hours, and 2 g of it was applied to a stainless steel plate (25 x 25 cm) in a - pattern.
The plate was dried at 120° C. for 1 hour and used as a dirt adjusting board.

Cotton knitted cloth (2 x 3.
5 cm) was allowed to stand for 1 minute, a light load was applied, and the stain adjustment plate was rubbed and washed 10 times, and the stain condition was visually judged and evaluated according to the following criteria.

5 points: Good dirt removal.

4 points: Slightly good dirt removal.

3 points: There is uneven removal of dirt.

2 points: Some dirt is removed.

1 point: The stains hardly come off.

(2) Cleaning power for scale stains Sprinkle cleaning agent (undiluted solution) on the scale stains (used for 1 month) on the bathtub (made of polypropylene) that cannot be easily removed by rubbing, and apply a load of approximately 5009 to the extreme surface. It was rubbed back and forth with a sponge (made of urethane) 10 times, and the state of the stain was visually judged and evaluated according to the following criteria.

5 points: Good dirt removal.

4 points: Slightly good dirt removal.

3 points: There is uneven removal of dirt.

2 points: Some dirt is removed.

1 point: The stains hardly come off.

Example 1 10.0 parts by weight of sodium oleate as a surfactant, 36.0 parts by weight of diethylene glycol moptyl ether as an organic solubilization aid, and the oily substance 4 shown in Table 1.
．． A microemulsion-type liquid cleaning composition was prepared by mixing 0 parts by weight, adding 50.0 parts by weight of water to make a total amount of 100 parts by weight, and stirring well.

Table 1 shows the results of performance evaluation of the cleaning composition thus obtained.

Example 2 Using 1000 parts by weight of sodium oleate as a surfactant, 36.0 parts by weight of the compound shown in Table 2 as an organic solubilization aid, and 4.0 parts by weight of n-decane as an oily substance,
Mix these and further add 50 parts by weight of water to bring the total amount to 1
00 parts by weight, and then thoroughly stirred to prepare a microemul resin 3 resin type liquid cleaning composition.

Table 2 shows the results of performance evaluation of the cleaning composition thus obtained.

Example 3 1000 parts by weight of sodium n-dodecylbenzenesulfonate as a surfactant, 36.0 parts by weight of diethylene glycol monobutyl ether as an organic solubilization aid, and 4.0 parts by weight of n-decane, limonene, ethyl acetate or soybean oil as an oily substance. A microemulsion liquid cleaning composition was prepared by mixing the parts by weight, adding 50.0 parts by weight of water to make the total amount 100 parts by weight, and stirring well.

The results of the performance evaluation of these cleaning compositions were
Shown in the table.

Example 4 As a surfactant, sodium α-olefin (CI4) sulfonate, polyoxyethylene dodecyl sulfate having an average number of added moles of ethylene oxide of 3, or secondary alcohol (C
lx, CI4) 10.0 parts by weight, 36.0 parts by weight of diethylene glycol monobutyl ether as an organic solubilization aid and 4.0 parts by weight of n-decane or limonene as an oily substance.
A microemulsion type liquid cleaning composition was prepared by mixing 0 parts by weight, adding 50 parts by weight of water to make the total amount 100 parts by weight, and stirring well.

Table 4 shows the results of performance evaluation of this cleaning composition.

Example 5 Instead of 36.0 parts by weight of diethylene glycol monobutyl ether as the organic solubilization aid in Example 1, 36.0 parts by weight of polypropylene glycol with a degree of polymerization of 10 was used, and n-decane was used as the oily substance, A microemulsion liquid detergent composition was prepared in the same manner as in Example 1 except for the above.

When we performed a performance evaluation on this product, it was found that the pH was 8.6.
The cleaning power against denatured oil stains was 5, and the cleaning power against steam stains was 5.

Comparative Example Liquid cleaning agents having the compositions shown in Table 5 were prepared, and the performance of each was evaluated. Table 5 shows the results.

From the above results, the microemulsion-type liquid detergent composition of the present invention has better detergency against denatured oil stains and detergency against scale stains than the liquid detergent composition of the comparative example using an alkaline agent. It turns out that it is also excellent.

Effects of the Invention The microemulsion liquid cleaning composition of the present invention has
It has excellent cleaning power, especially for heavy oil stains in the kitchen, stains on ventilation fans, floors, walls, and windows in the living room, and stains in the bathroom and toilet, without using alkaline agents or chlorinated solvents. It has high commercial value.

Claims (1)

[Claims] 1 (A) 1 to 20% by weight of surfactant, (B) General formula ▲ Numerical formula, chemical formula, table, etc. ▼ (At least one of R and R' in the formula has 1 to 1 carbon atoms) 6 is an alkyl group, the remainder is a hydrogen atom, and when both are alkyl groups, the sum of the carbon numbers of m is 7 or less, m is a number from 0 to 4, n is a number from 0 to 4, and m and The sum with n is 1 to 6) or the general formula ▲ Numerical formula, chemical formula, table, etc. ▼ (n' in the formula is a number from 5 to 25) 20 to 60 organic solubilizing aids Weight% (C) Animal and vegetable oils, paraffinic hydrocarbons, naphthenic hydrocarbons,
0.1 to 30% by weight of at least one oily substance selected from terpene oils and aliphatic carboxylic acid esters;
and (D) a microemulsion type liquid cleaning composition comprising 30 to 70% by weight of water.