JPH01178598A - Bar soap 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 [Industrial Application Field] The present invention relates to a kaolin-containing solid soap composition that has good foaming properties, shows high white discoloration even after aging, and has excellent fragrance persistence.

[Prior Art] Conventionally, bar soaps have been manufactured using natural oils and fatty acids as basic raw materials. The main component of the fatty acid is a straight chain saturated fatty acid having 10 or more carbon atoms, and a relatively lower fatty acid is used in combination to improve foaming. However, since relatively low-grade fatty acids have skin irritation, there is a limit to the amount that can be added, and the improvement in foaming properties is inevitably limited.

Therefore, attempts have been made to improve foaming properties without irritating the skin, and one such method is to mix kaolin powder (Japanese Patent Application No. 148190/1982). this,
Soap containing kaolin has excellent foaming properties.

However, this kaolin-containing solid soap composition not only has the disadvantage that the soap component discolors over time, but also has the disadvantage that the fragrance of the added fragrance does not last. This is thought to be because kaolin acts as a catalyst and discolors soap and fragrance ingredients.

[Problems to be Solved by the Invention] The present invention overcomes these drawbacks and provides a soap that has good foaming properties during use, is highly resistant to whitening over time, and has an excellent long-lasting fragrance. The purpose of this invention is to provide a kaolin-containing surface soap composition.

[Means for Solving the Problems] As a result of intensive research to develop a high-quality kaolin-containing surface soap, the present inventors prepared a solid soap by mixing kaolin and a specific fragrance in advance. It has been discovered that by blending a predetermined amount of additional ingredients, a solid soap with good foaming properties and long-lasting fragrance can be obtained that does not change color over time, and based on this knowledge, the present invention has been completed.

That is, the present invention combines kaolin (a) and 60% (V/V
) at least one fragrance component (b) insoluble in an ethanol aqueous solution at a weight ratio (a/b) of 99/l to 60/4.
The present invention provides a solid soap composition in which additive components prepared in advance by mixing in a ratio within the range of G are blended into a solid soap main ingredient at a ratio of 3 to 60% by weight based on the total weight of the composition. .

The kaolin which is the component (a) of the present invention includes kaolinite,
That is, it is a white clay consisting of a kaolin mineral whose main component is a hydrous aluminum silicate mineral having the composition Al2O,.2SiO□.2■20.

Next, as component (b) of the present invention, it is necessary to use a fragrance component that is insoluble in a 60% (V/V) ethanol aqueous solution. By blending such a perfume component with low solubility in combination with the above-mentioned kaolin, it is possible to suppress the white charcoal deterioration of the soap caused by the perfume component.

This fragrance ingredient may be either a synthetic fragrance or a natural fragrance.
Examples of synthetic fragrances include benzyl benzoate, α-hexylnnamic aldehyde, iso-hexylcyclohexenecarboxaldehyde, p-tetra-butyl-
α-Methyl-hydrocinnamic aldehyde, 3-(5
Examples of natural fragrances include jasmine oil, lemon oil, lime oil, oakmoss, rosewood oil, bergamot oil, and yuzu oil.

Among these fragrance ingredients, those having an aldehyde group are particularly preferred; they exhibit long-term stability of fragrance. Examples of such fragrance components include octylaldehyde, nonylaldehyde, denraldehyde, undecylaldehyde, and lauric aldehyde.

In the present invention, kaolin (a) and fragrance component (b) are mixed in a weight ratio (a/b) of 99/1 to 60/4.
It is necessary to use it at a ratio of 0. If the amount of the fragrance ingredient is less than this, the flavoring effect will be insufficient, and if the amount of the fragrance ingredient is greater than this, it will be difficult to prevent discoloration.

In the present invention, this kaolin (a) and the fragrance component (b)
) must be mixed in advance before being added to the solid soap base.

If these are blended separately or simultaneously in the solid soap base, the discoloration prevention effect of the soap will not be exhibited.

When kaolin (a) and fragrance ingredient (b) are added separately in this way, the soap discolors, but it is not necessarily clear why discoloration does not occur when they are mixed together and then added. This is probably because when kaolin and fragrance ingredients are mixed, some kind of interaction occurs and both are stabilized.

The additive components consisting of kaolin (a) and fragrance component (b) need to be blended into the solid soap base in a proportion of 3 to 60% by weight based on the total weight of the composition. If this proportion is less than 3% by weight, no foaming effect can be obtained and no improvement in whitening of the soap can be observed. Moreover, if this proportion exceeds 60% by weight, the soap will be cracked and its stability will be impaired.

The solid soap component in the present invention can be manufactured according to a conventionally known method. For example, beef tallow, pig intestine, whale fat,
Animal fats and oils such as fish fat, coconut oil, palm oil,
It can be produced by saponifying vegetable oils and fats such as palm kernel oil, soybean oil, olive oil, cottonseed oil, etc. alone or as a mixture with an alkali or the like, or by neutralizing various fatty acids with an alkali or the like.

In addition to the above-mentioned essential ingredients, the solid soap composition of the present invention may contain other anionic surfactants, surfactants such as nonionic surfactants, higher alcohols, etc. to the extent that the effects of the present invention are not impaired.
Flavors, pigments, preservatives, bactericidal agents, and the like can be appropriately added as optional ingredients.

[Effects of the Invention] The solid soap composition of the present invention exhibits remarkable effects such as very good lathering during use, high white discoloration of the soap over time, and excellent fragrance persistence.

[Example 1 Next, the present invention will be explained in more detail with reference to Examples.

The properties in each example were evaluated as follows.

(1) Solubility: Place 1 g of precisely weighed fragrance into an Erlenmeyer flask, drop a 60% (V/V) ethanol aqueous solution from a bilulet, and measure the volume of ethanol aqueous solution required to completely dissolve the fragrance. In real terms, the solubility was defined as the amount (mQ) of 60% (v/v) ethanol required to completely dissolve the fragrance 19.

(2) White discoloration of soap; Visual judgment by five panelists was made in comparison with soap in which kaolin and fragrance were blended separately or at the same time, and evaluated based on the following criteria.

Note that the judgment was made after a one-month abuse test at 45°C.

O: Very white compared to the standard product O: Quite white compared to the standard product Δ: Slightly white compared to the standard product X: Same level as compared to the standard product (3) Persistence of fragrance; 5 people A panel of panelists evaluated the soap based on sensory evaluation, comparing it to products in which kaolin and fragrance were blended separately or at the same time during soap production.

■: The fragrance is very long lasting compared to the standard product. O: The fragrance is very long lasting compared to the standard product. Δ: The scent is slightly long lasting compared to the standard product. ×: Persistence of fragrance is the same as that of the standard product Example 1~
5. Comparison Examples 1 to 1O Solid soaps were prepared with the formulations shown in the following table, and the soaps were examined for white discoloration and fragrance persistence. . The results are shown in the table below.

In addition, Examples 1 to 5 and Comparative Examples 5 to 10 are examples in which kaolin and fragrance were mixed together and blended with other components, and in Comparative Examples 1 to 4, kaolin and fragrance were blended separately. This is an example.

As is clear from this table, even if the composition is the same, if kaolin and fragrance are mixed in advance,
The whitening of the soap and the persistence of the fragrance are either good, or if they are combined separately, these are poor.

Patent applicant: Lion Corporation

Claims (1)

[Claims] 1. Kaolin (a) and at least one fragrance component (b) insoluble in a 60% (v/v) ethanol aqueous solution in a ratio by weight (a/b) in the range of 99/1 to 60/40. A solid soap composition comprising additive components prepared in advance by mixing, which are blended into a solid soap main ingredient at a ratio of 3 to 60% by weight based on the total weight of the composition.