JPS5941679B2 - transparent soap - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a border transparent soap that does not require a drying process;
More specifically, the present invention relates to the above-mentioned transparent soap containing a specific amount of at least two of glycerin, propylene glycol, and butylene glycol as a solvent.

Generally, transparent soap is manufactured using so-called transparent soap glue as a raw material. Transparent soap glue is made by mixing and heating animal and vegetable oils or fatty acid fats, lower alcohols or glycols as a solvent, and water. It is made by saponifying or neutralizing it with an aqueous alkaline solution and then adding sugar or a sugar alcohol such as sorbitol or mannitol.

This transparent soap glue is further flavored and colored to create a stock solution, which is poured into a frame, cooled and solidified, cut, and then dried for a certain period of time and then shaped into transparent soap. When manufacturing such transparent soap, it is possible to give the soap an appropriate solidification point and appropriate hardness by adjusting the amount of additives such as water and lower alcohol. Drying, shaping, etc. can be performed relatively easily.

The obtained transparent soap has good transparency, and
It has a creamy and rich lather even when used,
It has many good points as it hardly causes any softening or swelling. However, on the other hand, these conventional transparent soaps had serious drawbacks.
In other words, this transparent soap contains approximately 30% alcohol or water.
Since it contains up to 50% by weight, it requires a long drying period of about 60 to 70 days before being shipped as a product, which has the disadvantage of requiring a large drying space. . In order to eliminate these drawbacks, we have so far reduced the amount of lower alcohol and water in transparent soap, and
Methods such as adding certain substances to transparent soap or using a combination of these methods have been used, and these methods have the effect of shortening the drying time to some extent, but they do not go far enough to make drying unnecessary. isn't it.

Therefore, in order to significantly shorten or eliminate the drying period, it has been proposed to stop using water and volatile lower alcohols and instead use low-volatility polyhydric alcohols. It is true that using a large amount of polyhydric alcohol can eliminate the need for a drying process, but on the other hand, this method eliminates the creamy, rich lather that is characteristic of transparent soaps, and also reduces the so-called sweating and swelling. This causes inconveniences such as melting and crumbling, which in turn deteriorates transparency and significantly lowers commercial value.

In view of this situation, the present inventors have conducted intensive research to develop a transparent soap that does not have the above-mentioned drawbacks and does not require a drying process. It has been discovered that a transparent soap containing at least 100% alcohol and no lower alcohol such as ethanol is suitable for the purpose, and has arrived at the present invention. That is, an object of the present invention is to provide a transparent soap that does not require a drying process and that does not exhibit a decrease in foaming power or dissolution.

The present invention is a transparent soap obtained by saponifying normal ingredients such as oils and fats, solvents, water, and sugars with alkali, wherein the solvent is glycerin or/and its alkylene oxide adduct (a ), propylene glycols (b), and butylene glycols (c) (a) (
b) 25-35% by weight of at least two or more of (c)
(contains no lower alcohol), and (a) (
A border transparent soap which does not require a drying process and is characterized by containing each of b) and (c) individually in an amount not exceeding 15% by weight.

The weight percentages herein are based on the total amount of transparent soap. The transparent soap of the present invention is made by saponifying normal ingredients such as oils and fats, solvents, water, and sugars with an alkali. The oils and fats used here are those commonly used in soap production, such as animal and vegetable oils, processed products thereof, and fatty acids. The solvent is limited in type and content as will be detailed later, but it does not contain lower alcohols such as ethanol, which are found in conventional products. Here, saccharides include sugars such as sugar, as well as sugar alcohols such as sorbitol. The amounts of ingredients other than the solvent are within the range of usual amounts used in the manufacture of clear soaps. Examples of the glycerin (a) in the present invention include glycerin, diglycerin, and polyglycerin, and one or more of these can be used.

The alkylene oxide adducts (a) of glycerin are compounds obtained by chemically adding, for example, ethylene oxide and/or propylene oxide to the above-mentioned glycerin, and the amount of addition is 1 to 40 in the case of ethylene oxide.
The amount is 1 to 30 moles in the case of propylene oxide, preferably 5 to 20 moles in the case of ethylene oxide, and 5 to 15 moles in the case of propylene oxide, and is produced by a method known per se. Examples of the propylene glycols (b) include propylene glycol, dipropylene glycol, and polypropylene glycol, and one or more of these can be used. In addition, as butylene glycol (c), 1.3-
Examples include butylene glycol and 1,4-butylene glycol, and these can be used alone or in combination. In the case of the transparent soap of the present invention, at least two of the above-mentioned glycerins (a), propylene glycols (b), and butylene glycols (c) are contained in 25 to
35 weight? (a) (
5) (c) Each individual content is 15 weight? Must not exceed.

If only one of the above (a), (b), and (c) is used,
If the freezing point is too high or too low, the foaming properties will be poor and melting will easily occur, making it impossible to achieve the object of the present invention.
In the present invention, two types, preferably three types of these are used. And the total content of these is 25-35% by weight, preferably 28-32% by weight. It is. When the weight is less than 25 and 70, the foaming properties are good, but the soap is not sufficiently dissolved, resulting in non-uniformity and poor transparency.

35 weight again? If it exceeds the temperature, the freezing point and hardness will drop significantly, causing the problem. Foaming property also deteriorates, and in any case, the object of the present invention cannot be achieved. Also, (AXb) (c
The content of Raku alone is 15 weight? If the soap exceeds this range, the foaming properties will be lowered, the freezing point will be lowered, and the soap will become opaque, resulting in various disadvantages, making it impossible to obtain a transparent soap suitable for the intended purpose. It goes without saying that various substances such as fragrances and pigments may be added to the transparent soap of the present invention, if desired. The border transparent soap of the present invention is manufactured by the following method.

The above solvent is added to animal and vegetable oils such as beef tallow, apricot oil, palm oil, palm kernel oil, olive oil, and castor oil, or blended fats and oils such as their decomposed fatty acids, distilled single fatty acids, and synthetic fatty acids.
An alkaline agent such as caustic soda, caustic potash, or alkanolamine is added to this to perform a saponification or neutralization reaction.
After the reaction is complete, sugar, sorbitol, etc. are added to make transparent soap glue, and fragrances and pigments are added to this as necessary.
The transparent soap stock solution thus obtained is poured into a predetermined frame, cooled and solidified, cut, stamped, and packaged without being subjected to a drying process. Other components may be added to the transparent soap of the present invention in appropriate amounts as long as they do not contradict the purpose.
The transparent soap of the present invention does not require a drying process during production, and does not show any decrease in foaming power or dissolution, so it can be said to be extremely useful in terms of process and quality.

Hereinafter, the present invention will be explained with reference to Examples.

Example 1 Compounded fats and oils (beef tallow 65K1, bean oil 30K7, castor oil 5
Mixed fats and oils of K7) 100K7, 15kg of glycerin and 30Kq of propylene glycol as a soap solvent.
3-Butylene glycol 35K7 was added and mixed under high heat.

Separately, add a caustic soda aqueous solution prepared by dissolving 15.3K7 of caustic soda in 77K9 of water little by little over a period of 30 to 60 minutes.
The saponification reaction was completed while maintaining the temperature at 90°C. After saponification, sugar 12K9 and sorbitol 15K7 were added and dissolved while maintaining the temperature at about 80°C to obtain transparent soap glue. Further, perfumes and pigments were added to this transparent soap glue to give it fragrance and color. The total content of (a) glycerin, (b) propylene glycol, and (c) 1,3-butylene glycol in this product is 26.6 weight 70, and the individual content is (a) 5.0 weight 70, (b) 10.0
% by weight, (c) 11.6 weight 70.

The transparent soap stock solution thus obtained was poured into a predetermined frame, cooled and solidified, cut, molded, and packaged to obtain transparent soap.

The thus obtained product of the present invention had good transparency and creamy lathering, and was a good transparent soap without melting or crumbling, even though there was no drying step.

Example 2 Lauric acid 20K as blended oil! 9, myristic acid 3
0K7, palmitic acid 20K7, stearic acid 20Kf
and castor oil 10K9 were placed in a reaction pot, and as a soap solvent, 10 mole adduct of glycerin with propylene oxide 25K7, propylene glycol 45K9, 1.3-
Butylene glycol 30K9 was added and mixed while heating.

Separately, add 13.5Kq of caustic soda and an alkaline aqueous solution prepared by dissolving 5K9 of caustic potash in 70Kf of water little by little.
The mixture was poured over a period of ~60 minutes, and the reaction was completed while maintaining the temperature at 80-90°C. After the reaction is completed, sugar 20K7, mannitol 10K7 and ED are added to this while maintaining the temperature at about 80'C.
TA-4Na309 was added and dissolved to obtain transparent soap glue. Furthermore, fragrances and pigments are added to this transparent soap glue to give it fragrance.
I did some coloring. The total content of (a) propylene oxide adduct of glycerin, (b) propylene glycol, and (c) 1,3-butylene glycol in this product is 31.4% by weight, and the individual content is (a) 7%. ．．
9 weight? , (b) 14.1 weight 70, (c) 9.4 weight 70. The transparent soap stock solution thus obtained was poured into a predetermined frame, cooled and solidified, cut, stamped, and packaged to obtain a transparent soap. The product of the present invention thus obtained was a good transparent soap with good transparency, creamy lathering, and no melting or breakage, even though there was no drying step. Example 3 Beef tallow decomposed fatty acids 65Kf and oil decomposed fatty acids 35K7 were placed in a reaction pot as blended fats and oils, and glycerin 41K7 and dipropylene glycol 41K9 were added as soap solvents, followed by thermal mixing.

Separately, an alkaline aqueous solution prepared by dissolving 17.2Kf of caustic soda in 61.5K7 of water was added little by little over 30 to 60 minutes, and the reaction was completed while maintaining the temperature at 80 to 90°C. After the reaction was completed, 13.8 grams of sugar was dissolved in this while maintaining the temperature at about 80'C to obtain a transparent soap stock solution. The total content of (a) glycerin and (b) dipropylene glycol in this product was 29.8% by weight, and the individual contents were (a) 14.9% by weight, and (b) 14.9% by weight.
It was hot. It was poured into a frame, cooled and solidified, cut, stamped and packaged to obtain transparent soap. The product of the present invention thus obtained was a good transparent soap similar to Examples 1 and 2.

Next, the product of the present invention will be described in comparison with a comparative product.

The evaluation criteria for the properties in the table below are shown. Hardness: Measured with a card meter made by Iio Denki with a weight needle of 1φ and a temperature of 25°C. Hardness: 15 or more ○, 10-15Δ 10 or less ×.

Transparency: Visible light transmittance of a 10 mm sample piece was measured using Keihin Denshoku's UNICC-33HA and was 3070 or more ○, 2
0 to 30% △ 20% or less or non-uniform X.

Meltdown: base 20mm x 15 dragons, height 257! ! U
Place the sample pieces cut into a specified tray in artificial hard water (7
Add 50ml of 0ppm CaC03) and heat at 25°C.
After soaking for a period of time, the degree of swelling relative to the non-soaked portion is measured using a caliper.

1mm or less ○, 1 to 2 small △ 2mm or more x.

Foaming property: - 1% solution prepared with 40° artificial hard water (70 ppm CaC03) using a standard mixer.
After stirring m1 at a constant rotation speed for 1 minute, measure the amount of foam generated.

Foaming amount 2200ml or more ○ Foaming amount 1800-2200m1△ Foaming amount 1800m1 or less shall be.

According to the above results, it can be seen that the transparent soap of the present invention is superior to the comparative products in terms of hardness, transparency, meltability, and foaming properties, and is significantly superior in overall evaluation.

Claims (1)

[Scope of Claims] 1. A transparent soap obtained by saponifying normal ingredients such as oils and fats, a solvent, water, and sugars with an alkali, wherein the solvent is glycerin or/and its alkylene oxide adduct. class (a), propylene glycols (b)
), and (a) and (b) of butylene glycols (c)
Contains 25 to 35% by weight of at least two of (c) (contains no lower alcohol), and (a) and (b)
(c) A frame-kneaded transparent soap that does not require a drying process and is characterized by containing each individual substance in an amount not exceeding 15% by weight. 2. The transparent soap according to claim 1, wherein the glycerin is one or more selected from glycerin, diglycerin, and polyglycerin. 3. The transparent soap according to claim 1 or 2, wherein the alkylene oxide adduct of glycerin is an ethylene oxide or/and propylene oxide adduct of glycerin. 4 Propylene glycols are propylene glycol,
Claim 1: one or more selected from dipropylene glycol and polypropylene glycol
Transparent soap as described. 5. The transparent soap according to claim 1, wherein the butylene glycols are 1,3-butylene glycol and/or 1,4-butylene glycol.