JP2003105391A - Phase separation inhibitor and liquid detergent including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a phase separation inhibitor that can inhibit liquid detergents including fine solid particles from separating into two phases, even when they are stored for a long period of time. SOLUTION: A glycerol derivative represented by the general formula (wherein R<1> , R<2> and R<3> may be identical or different and mean a 1-3C lower alkyl, respectively) is added to a liquid detergent. In addition, known additives, for example, surfactants may be mixed.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a separation inhibitor. In particular, it relates to a separation inhibitor capable of suppressing the phenomenon of separation into two layers with the passage of time in a liquid layer containing fine solids such as a fine abrasive. Furthermore, the present invention relates to a liquid detergent containing the separation inhibitor.

[0002]

2. Description of the Related Art As represented by, for example, a liquid kitchen cleanser, a product having a function of removing stains on the surface of dishes such as dishes and the surface of appliances such as pots is commercially available. In these products, fine solid particles such as abrasives, surfactants, water, and dispersants are essential components, and in many cases, fragrances and foam regulators are further added and blended,
It is often injected into an opaque plastic container and then moved and transported.

Although the above-mentioned products maintain a substantially uniform emulsified liquid state when shipped from the factory, they are stored in a warehouse or the like after shipment from the factory, or lined up at a storefront, and further under the consumer's view. It takes a considerable amount of time before the emulsified liquid substance in the container is used up. Furthermore, since these products are exposed to high temperatures in the daytime and low temperatures in the night, depending on their storage environment, the emulsion liquid cannot maintain a uniform state as a whole after a long time, There is a possibility that a phenomenon may occur in which the emulsified liquid is separated into two layers, a liquid layer and an emulsified liquid layer.
That is, since the detergent is usually stored in an opaque container, even if it is separated into two layers inside the container, it cannot be known from the outside of the container that it is separated into two layers, Only when the contents taken out from the container at the time of use are transparent liquid derived from the liquid layer, the abnormality is noticed. Products that show such a separation phenomenon, even if their function does not deteriorate,
Since it does not give a good impression as a product and may cause complaints from consumers, it was required to develop means for avoiding the phenomenon of being divided into the above two layers.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a separation inhibitor which is excellent in the effect of avoiding the phenomenon of separation into the above two layers. Another object is to provide a stable liquid detergent containing fine solid particles.

[0005]

Means for Solving the Problems The inventors of the present invention have conducted extensive studies to develop the above-mentioned object, and as a result, (In the formula, R ¹ , R ² and R ³ may be the same or different and each represents a lower alkyl group having 1 to 3 carbon atoms), a glycerin derivative represented by emulsifying a fine solid such as a cleanser. It has been found that the above-mentioned problems can be achieved when they are made to coexist in a liquid substance, and further studies have been conducted to reach the present invention.

That is, the present invention is 1) a separation inhibitor containing the glycerin derivative represented by the general formula (1), and 2) a liquid detergent containing fine solid particles containing the separation inhibitor.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below. The separation inhibitor referred to in the present invention is a compound represented by the above general formula (1), and is composed of one kind or two or more kinds. In the formula
Examples of R1 to R3 include a methyl group, an ethyl group, a propyl group, and an isopropyl group, and among them, a methyl group is particularly preferable. These compounds can be obtained by purchasing a commercial product, but they may be synthesized by a conventional method.

The separation inhibitor referred to in the present invention has a function of suppressing the separation of the emulsified liquid substance containing fine solid particles such as abrasives into two layers. The emulsified liquid is
Minute solid particles such as abrasives, surfactant, water, dispersant,
It is used as a starting material such as a fragrance, and prepared from these by a conventional method. Although the emulsified liquid material may have any function, it is particularly preferable that it has a function of cleaning a soiled surface such as a cleaner or a cleanser.

As the above-mentioned fine solid particles, known water-insoluble abrasive particles are used. Specifically, aluminum oxide, aluminum hydroxide, magnesium oxide, titanium oxide, silicon dioxide, silicon carbide, calcium carbonate, calcium phosphate, Examples thereof include synthetic zeolite, clay, talc, diatomaceous earth, and polymer beads. Among these, calcium carbonate, synthetic zeolite, and silicon dioxide particles having an average particle size of about 0.5 to 30 μm are preferable. It should be noted that these particles are selected individually or from a plurality of particles.

As the surfactant, any of anionic surfactants, nonionic surfactants, amphoteric surfactants and the like can be used. As the anionic surfactant, various known surfactants are used, but as a typical example, a linear or branched alkylbenzene sulfonate having an alkyl group of 8 to 22, an alkyl ether sulfate, a polyoxyethylene. (The average number of moles of oxyethylene groups added is 1 to
8) Alkyl ether sulfates, polyoxyethylene-oxypropylene (the sum of the average number of moles of oxyethylene groups added and the average number of moles of oxyethylene groups added is 1 to 8) alkyl ether sulfates, and the like. As the nonionic surfactant, various known surfactants are used, but as a representative one, an alcohol ether or a fatty acid containing a polyoxyethylene (oxyethylene group average addition mole number is 1 to 20) group Examples thereof include alcohol ethers and fatty acid alkanolamides containing an alkanolamide, a polyoxyethylene-oxypropylene (the sum of the average number of addition moles of oxyethylene groups and the average number of addition moles of oxyethylene groups is 1 to 20) group. As the amphoteric surfactant, various known surfactants are used, and typical examples thereof include alkyl betaine having an alkyl group of 8 to 22, alkylamidopropyl betaine and the like.

The fragrance is not particularly limited as long as it is a known fragrance used in detergents. Among them, fragrances of citrus type or mint type, of which herbal or fruit type are used. Is particularly preferable. As the dispersant, known dispersants can be used, and examples thereof include inorganic compounds such as sodium silicate, sodium orthosilicate, sodium metasilicate, and calcium chloride, and organic compounds such as citric acid, tartaric acid, malonic acid, and malic acid. . Various other known compounding agents can be used.

These fine solid particles, surfactant, water,
The blending amount of the fragrance and the method for preparing the emulsified liquid material from these components are not particularly limited.

The amount of the above-mentioned separation inhibitor added / blended into the emulsified liquid containing the above-mentioned fine solid, surfactant, water, perfume, etc. is 0.01 to 5% by weight based on the emulsified liquid.
Is preferred. Especially 0.1 to 2% by weight, further 0.2
~ 1 wt% is preferred.

The above-mentioned separation inhibitor may be added and blended in the emulsified liquid, but since this separation inhibitor has the property of adapting to a fragrance, it must be blended in advance with another fragrance or a blended fragrance and necessary. According to the above, it may be added and blended in the emulsified liquid material together with the flavors. In this case, the addition / blending amount of the separation inhibitor is preferably 2 to 80% by weight based on the mixture of the other fragrance or the prepared fragrance and the separation inhibitor.
In particular, it is preferably 5 to 70% by weight, more preferably 10 to 60% by weight.

As the object to which the separation inhibitor can be added,
There is no particular limitation as long as it is a detergent containing fine solid particles, but a cleaner or a cleanser is effective. Among them, the kitchen cleanser is particularly effective.

[0016]

By incorporating the separation inhibitor of the present invention into a detergent, it has become possible to avoid the two-layer separation of an emulsified detergent. Especially in cold regions, the above-mentioned two-layer separation phenomenon was likely to occur, but the addition of the separation inhibitor of the present invention eliminated the separation phenomenon. Further, the separation inhibitor of the present invention is easily adapted to a fragrance and is odorless,
Since it is possible to maintain the fragrance tone of the entire mixed fragrance, it becomes possible to use the product for a long time with a pleasant feeling, which is extremely advantageous.

[0017]

The present invention will be described in more detail with reference to examples and comparative examples, but the present invention is not limited to these examples.

Example 1 Triacetin was added to 0.2% by weight of an emulsified liquid for a cleanser, mixed and mixed to obtain a cleanser containing a separation inhibitor. The cleanser was subjected to an abuse test under the following conditions. After the test, the sample was put in a graduated cylinder and capped to prevent the contents from evaporating, and then allowed to stand at room temperature for 9 months. A liquid layer with a thickness of 2 ml was detected on top of the measuring cylinder. The emulsion liquid for cleanser is composed of solid particles, a surfactant, a dispersant, and water. Abuse test: Leave at -14 ℃ for 16 hours, immediately 20 ℃
Left for 8 hours. This operation was set as one cycle, and a total of 10 cycles were processed.

[0018]

Comparative Example 1 A cleanser was prepared in the same manner as in Example 1 except that hexenyl acetate, allyl caproate, benzyl acetate, amyl vinyl carbinol, and linalyl acetate were added instead of triacetin. Then, an abuse test was conducted under the same conditions as in Example 1,
The thickness of the separated liquid layer was measured. The thickness of the liquid layer is 35 ml, 40 ml, 20 ml, 65 ml and 40 ml, respectively.
It was ml. However, the abandonment period after the abuse test was 45 days.

[0019]

Comparative Example 2 A cleanser was prepared in the same manner as in Example 1 except that an equivalent mixture of linalool and dipropylene glycol was added instead of triacetin. Then, the same operation as in Comparative Example 1 was performed to measure the thickness of the separated liquid layer. The thickness of the liquid layer was 22 ml. By comparing Example 1 with Comparative Examples 1 and 2, it was revealed that the separation inhibitor used in the present invention has an extremely excellent effect on stability.

[0020]

[Example 2-5] Equivalent (weight ratio) mixture of the following compounded flavor (A) and triacetin instead of triacetin, 7: 3 equivalent (weight ratio) mixture of compounded flavor (A) and triacetin, and compounded flavor below Equivalent (weight ratio) mixture of (B) and triacetin, 7: of blended fragrance (A) and triacetin:
A cleanser was prepared in the same manner as in Example 1 except that 3 equivalents (weight ratio) of the mixture was added and blended. Then, the same operation as in Example 1 was performed (however, the standing period was changed), and the thickness of the separated liquid layer was measured. The thickness of the liquid layer is as shown in Table 1.

[0021]

[0022]

[Comparative Examples 3 to 4] A cleanser was prepared in the same manner as in Example 2 except that the compounded flavor (A) and the compounded flavor (B) were added and blended in place of triacetin. Then, the same operation as in Test Example 1 was performed (however, the standing period was changed), and the thickness of the separated liquid layer was measured. The thickness of the liquid layer is as shown in Table 1. In addition, as a blank, a test was performed using only a cleanser emulsion.

Table 1

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) C11D 17/08 C11D 17/08 F term (reference) 4D077 AB10 AC10 DC02Z DC36Z 4H003 BA12 DA05 DA17 DC04 FA05 FA16 FA26

Claims (2)

[Claims] 1. The following general formula (In the formula, R ¹ , R ² and R ³ may be the same or different and each represents a lower alkyl group having 1 to 3 carbon atoms) A separation inhibitor containing a glycerin derivative. 2. A liquid detergent containing fine solid particles, which comprises the separation inhibitor according to claim 1.