CA1321741C - Detergent - Google Patents

Abstract

ABSTRACT OF THE DISCLOSURE
The present invention relates to a detergent in the form of, for example, toilet soap, bath soap, cosmetic soap, transparent soap, face cleanser or hand and body detergent comprising skimmilk, defatted milk or re-constituted milk in order to minimize skin irritation and to give mild foaming.

Description

~3217~1 FIELD OF THE INVENTION
The present invention relates to a detergent in the form of, for example, toilet soap, bath soap, cosmetic soap, transparent soap, face cleanser or hand and body detergent comprising skimmilk, de~atted milk or reconstituted milk in order to minimize skin irritation and to give mild foaming.
BACKGROUND OF THE INVENTIGN
The secretion of sebum contributes to maintain the surface of the skin smooth. However, the sebum is decomposed by oxygen in the atmosphere with the lapse of time and finally exerts inverse effects on the skin.
On the other hand, sweat se-reted ~rom sweat glands contains salts and urea. After the evaporation of the moisture in the sweat, these salts and urea remain on the surface of the skin and irritate the same, thus causing various skin troubles such as prickly heat.
The sebum and salts secreted from the skin would adhere to the skin together with various contaminants and cosmetics to thereby form dirt. A number of detergents have been widely applied in order to wash away these contaminants and to maintain the surface of the skin clean. However, there is a problem that the excessive ~ 321 7Lll 1 defatting and cleaning effects of some detergents might cause chapped skin or skin irritation (as described Yasuda T. and ~osoda F., Biyo no Kaqaku ~ u to Keshohin (Cosmetic Chemistry - Skin and Cosmetics), pages 83 to 86, Nanzando, Japan 1957).
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a detergent which shows enhanced foaming properties and mild foaming and makes the skin moist and smooth by adding skimmilk, deÇat~ed milk or reconstituted milk to, for example, toilet soap, bath soap, cosmetic soap, a face cleanser or a hand and body cleanser.
Other objects and effects of the present invention will be apparent from the following description.
The above objects of the present invention are attained by a detergent comprising at least one of skimmilk, defatted milk and reconstituted milk as a foaming agent.
DETAILED DESCRIPTION OF THE INVENTION
The present inventor priorly found that an excellent cosmetic can be produced by adding skimmilk, de~atted milk or reconstituted milk, as an emulsifier, to a basic cosmetic (as described in JP-A-63-310808, published December 19, 1963 and JP-A-63-310811, published December 19, 1963).
As the result of subsequent studies, the present inventor has .
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13 217 L~ 1 1 found that a detergent, which shows enhanced foaming properties, mild foaming and an excellent feel, can be obtained by adding 5.0 to 10.0% on a solid basis of skimmilk, defatted milk or reconstituted milk to a basic detergent, thus completing the present invention.
The basic detergent to be used in the present invention include any conventional products such as toilet soap, bath soap, cosmetic soap, face cleanser and hand and body detergent as described, e.g., in Saishin Keshohin Kaqaku (Newest Cosmetics Science) (Yakuji Nippo-sha, Japan 1981). It is preferred that skimmilk, defatted milk or reconstituted milk is added thereto in an amount of from about 5.Q to 10.0~ by weight~ on a solid basis. When the content thereof is less than about 5% by weight, no remarkable effect can be achieved. When the content thereof exceeds about 10.0% by weight, on the other hand, the resulting product is colored and has poor shaping properties, in the case of soap. In addition, the aimed efect can not be elevated thereby any more.
~0 These detergents to which the present invention can be applied may be produced according to a method described in Keshohin Gaku (Cosmetic Science) (edited by Ikeda, T., pages 147 to 151, Nanzando, Japan 1957), though it is not resctirced thereby.

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1 The the detergent of the present invention will be illustrated in more detail below by citing toilet soap, cosmetic soap and a liquid detergent as examples, but the present invention would not be construed as being limited thereto.

-Cosmetic soaP
A commercial boiled soap dough was cooled, dried and sliced or powdered. Then, from 5.0 to 10.0~ by weight on a solid basis of skimmilk, reconstituted milk or defatted milk was added thereto together with other conventional additives including perfumes and colorants.
The resulting mixture was throughly stirred in a mixer and then pressed and kneaded with a roll or a plodder. Thus, the fat con~ained in the milk additive subjected to the physical treatments such as heating, rubbing or kneading was modified into a skin-forming material mainly comprising fine lipoproteins. The~se lipoproteins were bound to soap molecules, and thus the final product had an ~0 improved gloss and a hiah-grade appearance, though it was somewhat colored.
The obtained product showed excellent foaming properties, a mild feel and no skin irritation~
It has been commonly known that conventional cosmetic soap gives poor foaming and forms a large amount .

:13 217 L~ 1 1 of soap grounds in a seacoast spa water containing brine, compared with that in soft water.
1 g portions of fine pieces of the cosmetic soap (A) o the present invention as prepared above and a commercial cosmetic soap ~B) were introduced into each a Nessler's tube and 40 g of sea water was added thereto.
After shaking for five minutes, the soap pieces (A) were dissolved in the brine to thereby give an opaque solu~ion showing mild and somewhat large foaming. In contrast thereto, the soap pieces (B) were not dissolved but precipitated without showing any foaming.
It can be understood from the above that the toilet soap of the present invention is available in hard water such as brine.

Cosmetic transparent soap 5.0% by weight on a solid basis of skimmilk, defatted milk or reconstituted milk was added to a soap dough of cosmetic transparent soap immediately before ~0 kneading. The resulting mixture was uniformly stirred and molded. The product thus obtained showed an excellent feel and foaming at the use, though the t~anspa~ency thereof was slightly inferior to that of conventional transparent soap.

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Liquid deterqent for hand and hody A liquid detergent having the following composition was prepared by the conventional manner.

Sodium lauryl sulfate 19 parts Diethanolamine salt of coconut oil fatty acid ~ 7 parts Triethanolamine slat of N-coconut oil fatty acid and L-glutamic acid 15 parts Sodium d,Q-pyrrolidonecarboxylate solution 1 part Conc. glyceroI 4 parts Skimmiik powder 5 parts Purified water to make 100 parts In addition to the above components, ~he ~15 conventional additives including perfume, preservatives and antioxidants were added.
The obtained product according to the present invention showed excellent foaming properties and a mild and satisfactory feel on the skin and made the skin not ~dry but smooth, compared with a conventional detergent.
While the invention has been described~in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that various ; changes and modifications can be made therein without departing from the spirit and scope thereof.

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Claims (4)

1. A detergent comprising at least one of skim milk, defatted milk and reconstituted milk as a foaming agent, wherein the amount of said at least one of skim milk, defatted milk and reconstituted milk is from about 5.0 to 10.0% by weight on a solid basis.

2. A detergent as claimed in Claim 1, wherein said detergent is toilet soap.

3. A detergent as claimed in Claim 1, wherein said detergent is cosmetic soap.

4. A detergent as claimed in Claim 1, wherein said detergent is a liquid detergent for hand and body.