JPH0657298A - Soap composition - Google Patents

Abstract

PURPOSE:To provide a soap compsn. which hardly swells up or crumbles by dissolution during the use, foams well and is soft, gentle to the skin, and excellent in moist feeling after the use, emission of perfume, and persistence of perfume. CONSTITUTION:A soap compsn. mainly comprises a natural fatty acid soap having a wt. ratio of a palm oil fatty acid salt to a coconut oil fatty acid salt of (2:3)-(9:1), 1-20wt.% 8-20C higher fatty acid, and 5-20wt.% water.

Description

Detailed Description of the Invention

[0001]

Industrial Field of the Invention The present invention is characterized by less fluffing and dissolution during use, good foaming, soft soap, good on the skin, and moist feeling, scenting and persistence of fragrance after use. Good bar soap composition.

[0002]

2. Description of the Related Art Conventional soap is a soap base obtained by reacting (saponifying) natural fatty acids obtained by hydrolyzing beef tallow or coconut oil with an aqueous solution of caustic soda. Is obtained by blending. In general,
The fat composition of the soap raw material is 60 to 85% by weight of beef tallow and 15 to 40% by weight of coconut oil. The ratio of these raw material fats and oils is adjusted so as to give the soap proper properties such as plasticity, toughness, solubility, foaming property and detergency. Usually, it is necessary to increase the ratio of coconut oil in order to obtain soap with good foaming, but problems such as smoldering and melting collapse occur. In order to control this drawback, higher alcohols such as cetanol, there is a method of using oils of hydrocarbons as an additive, but the essential solution has not been reached, by adding a large amount of oil, foaming, There is a drawback that the cleanability is impaired. In addition, in order to obtain a soap that does not melt easily or become fuzzy, it is necessary to increase the beef tallow ratio. However, when the beef tallow ratio is increased, the solubility and foaming are deteriorated and the skin contact becomes hard. Also, in order to make the foam creamy and give a moist feeling after use, higher fatty acids, which are superfatting agents, are usually blended, but since it inhibits foaming, only a small amount can be blended and a sufficient effect is obtained. Absent. In addition, in order to add a large amount to obtain a sufficient effect, it is necessary to increase the ratio of coconut oil, which causes problems such as meltdown and fuzzy. Furthermore, the main ingredient of the soap base, beef tallow, has a peculiar animal-like odor, and therefore, there is a limit to perfuming a scent that has a good scent and lasts. In this way, it has a good lather, soft soap, and good skin feel, but there is little dissolution and swelling during use, and it is creamy and has a moist feeling after use, giving it a scent and a long-lasting scent. I haven't got the ideal soap that is well balanced with good soap,
The completion of such a soap composition has been desired.

[0003]

Means for Solving the Problems The inventors of the present invention have conducted extensive studies to achieve the above technical problems, and as a result, by using palm oil and coconut oil as raw material fats and oils, conventional solid soap cannot , Good foaming during use, soft soap, and good skin contact, but does not easily melt or swell, and it is creamy and has a moist feeling after use, good fragrance, and fragrance persistence. We came to complete a well-balanced and ideal soap composition that has both.
That is, the present invention is mainly composed of a natural fatty acid soap composed of a palm oil fatty acid salt and a palm oil fatty acid salt, 1 to 20% by weight of a higher fatty acid having 8 to 20 carbon atoms, and 5 to 20% by weight of water. It is a soap composition.

The structure of the present invention will be described in detail below. The salt of these fatty acids (higher fatty acid soap) can be produced by a conventional method. For example, a mixture of palm oil and palm oil is saponified with an alkali metal or an alkaline earth metal,
Alternatively, it is a method in which a mixture of palm oil fatty acid and coconut oil fatty acid obtained by high-pressure decomposition of palm oil and coconut oil is saponified with an alkali metal or an alkaline earth metal. The palm oil used in the present invention is obtained by a conventional method.
For example, crude oil obtained by washing, defractionating, squeezing, etc. of the oil palm bunch can be further subjected to fractionation, centrifugation, decolorization, deodorization, etc., and the proportion of palmitic acid in the fatty acid composition is 40%. ~ 65% by weight, the proportion of oleic acid is 20
Up to 45% by weight. The coconut oil used in the present invention is obtained by a conventional method. For example, the crude oil obtained by washing the coconut core, pressing, etc., can be further subjected to fractionation, centrifugation, decolorization, deodorization, etc., and the proportion of lauric acid in the fatty acid composition is 40 to 60% by weight, The ratio of myristic acid is 15 to 35% by weight. The palm oil fatty acid salt and the coconut oil fatty acid salt used in the present invention are fatty acid salts obtained by hydrolyzing the respective fats and oils. The weight ratio of palm oil and coconut oil used in the present invention is from 2: 3 to 9: 1, preferably 1 :.
1 to 4: 1. The higher the ratio of coconut oil, the better the foaming, but if the coconut oil is more than 2: 3, the soap will melt or become fuzzy, and if the palm oil is more than 9: 1, the soap will become harder and the skin feel worse. It is difficult to dissolve and the foaming becomes worse.

The higher fatty acid used in the present invention has an alkyl group or an alkenyl group having 8 to 22 carbon atoms, and is, for example, a single fatty acid such as pelargonic acid, lauric acid, myristic acid, palmitic acid and stearic acid. other,
Examples thereof include coconut oil fatty acid, palm oil fatty acid, and beef fatty acid, and in the present invention, one or more of them are used. The blending amount of the higher fatty acid in the present invention is 1 to 20% by weight, preferably 2 to 15% by weight. When it is less than 1% by weight, it is difficult to give the skin a moist feeling after use, and when it exceeds 20% by weight, foaming and a decrease in the amount of foam are observed. The higher fatty acid makes the foam quality of the soap creamy and adjusts the cleaning power of the soap, so that it can give a moist feeling after use. The higher fatty acid can be used properly depending on the desired foam quality of the soap. For example, lauric acid or coconut oil fatty acid is used for a large foam, palmitic acid, stearic acid or palm oil fatty acid is used for a very fine foam, and myristic acid is used for an intermediate size. By combining these, various foam qualities can be obtained.

The amount of water used in the present invention is 5 to 20.
% By weight, preferably 10 to 15% by weight.
If it is less than 5% by weight, the soap becomes hard and the skin feels hard,
Poor foaming due to poor melting. On the other hand, if it exceeds 20% by weight, it becomes too soft and the melting becomes worrisome, resulting in poor moldability and poor moldability during production. Normally, soap is produced by saponifying fats and oils or higher fatty acids by either a kama method or a continuous saponification method, and the final product of each saponification method is a soap base (containing 30% by weight of water). It is a neat soap, and about 3% of this base material is used in order to improve the moldability, manufacturability, and stamping property before molding into a block.
The water content of 0% by weight needs to be 20% by weight or less.
Water is a factor that greatly affects the softness, melting and foaming of soap.

In the present invention, if necessary, beef tallow,
In addition to fatty acids obtained by hydrolysis of palm kernel oil, soybean oil, olive oil, cottonseed oil, etc., soaps of various fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, etc. within the range that does not impair the effects of the present invention. It can be blended.

If necessary, the soap composition of the present invention may contain the following components for the purpose of the effect of residual oil on the skin and protection of the skin. For example, hydrocarbons such as squalane, olefin oligomer, petrolatum, liquid paraffin, esters such as sugar ester, lanolin and isopropyl myristate, aliphatic alcohols such as acetyl alcohol, stearyl alcohol and oleyl alcohol, aliphatic alcohols and fatty acid Examples include ethoxylates, cationic polymers, silicone oils, vitamins, anti-inflammatory agents.

Further, if necessary, propylene glycol, glycerin, polyethylene glycol, sorbitol, maltitol, propylene oxide adduct of glycerin, diglycerin, etc. may be added to the soap composition of the present invention as a moisturizing agent. it can.

The soap composition of the present invention may optionally contain various components commonly used in detergents such as chelating agents, preservatives, bactericides, buffers, ultraviolet absorbers, antioxidants, and pigments. , Fragrance, etc. can be added. They are,
Of course, it must be used under qualitative and quantitative conditions that do not impair the effects of the present invention.

[0011]

EXAMPLES Next, the present invention will be described in more detail by way of examples, which should not be construed as limiting the invention.
The blending amount is% by weight. Examples 1 to 17 and Comparative Examples 1 to
12 is shown in Tables 1 and 2. The effect was measured by the following test method.

(1) Foaming test CaCl ₃ 70 ppm artificial hard water was used to prepare 400 ml of a 1% sample concentration solution, and the foaming amount was measured using a cylindrical cylinder equipped with a stirrer at a temperature of 40 ° C. The evaluation method was according to the following criteria. ◎: Foaming is very good; Foaming amount is 2100 ml or more ○: Foaming is good; Foaming amount is 1800 ml or more and less than 2100 ml △: Foaming is somewhat poor; Foaming amount is 1500 ml or more and less than 1800 ml ×: Foaming is poor; Foaming amount is less than 1500 ml

(2) Foam Persistence Test After measuring the foaming amount, the drainage time was measured. ◎: Very good foam lasting; 190 seconds or more ○: Good foam lasting; 150 seconds or more but less than 190 seconds △: Foam lasting somewhat poor; 110 seconds or more but less than 150 seconds ×: Poor foam lasting; less than 110 seconds

(3) Usability test method For each sample, 5 professional men and women, 10 people in total,
A panel test was conducted on the sensory feel (the creaminess of the foam, the moist feel after use, the melt-down, the softness on the skin, the fragrance). The evaluation method was according to the following criteria. ⊚: Very good usability; 8 or more specialized panelists recognized that usability was good. ○: Good usability; 6 or more and less than 8 specialized panelists recognized that usability was good. Δ: Usability is slightly poor; 4 or more and less than 6 specialized panelists recognized that usability was good. X: Poor usability; less than 4 specialized panelists recognized that usability was good.

(4) Swelling degree test method A wire whose weight has been measured in advance is attached to a sample, and the sample is dipped in 200 ml of tap water kept at 20 ° C. After 2 hours, the product is taken out, the weight is measured, and the swelling degree (water absorption%) is obtained using the following formula. ◎: Swelling resistance is very good; Swelling degree is less than 17% ○: Swelling resistance is good; Swelling degree is 17% or more and less than 21% △: Swelling resistance is slightly poor; Swelling degree is 21% or more and less than 25% ×: Swelling resistance Poor; swelling degree 25% or more

[0016]

[Table 1]

[0017]

[Table 2]

Manufacturing Method A soap composition having the above formulation was prepared by a conventional method.

As can be seen from the results of Tables 1 and 2, the weight ratio of the palm oil fatty acid salt to the coconut oil fatty acid salt is from 2: 3 to.
A soap composition containing 9: 1 higher fatty acid in the range of 1 to 20% by weight and water in the range of 5 to 20% by weight, compared with a soap composition outside this range, had foaming, foam lasting and foaming. It can be seen that the creamyness, the moist feeling after use, the swelling resistance, the goodness on the skin and the fragrance are excellent.

[0020]

The soap composition of the present invention produces foam when used,
Good foam lasting, soft soap and good on the skin, but less likely to melt or swell, and the foam is creamy and moist after use, giving a good scent and lasting fragrance It is an ideal soap composition with a good balance of properties.

Claims (2)

[Claims] 1. A natural fatty acid soap comprising a palm oil fatty acid salt and a coconut oil fatty acid salt, and 1 to 20% by weight of 8 to 2 carbon atoms.
A soap composition containing 0 higher fatty acid and 5 to 20% by weight of water as main components. 2. The soap composition according to claim 1, wherein the weight ratio of the palm oil fatty acid salt and the palm oil fatty acid salt is 2: 3 to 9: 1.