Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
1999-12-03
2002-07-02
Ogden, Necholus (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C510S141000, C510S152000, C510S153000, C510S155000
Reexamination Certificate
active
06413922
ABSTRACT:
CROSS REFERENCE TO RELATED APPLICATION
This application is based on application Nos. 98-28546, 98-52775, and 99-31025 filed in the Korean Industrial Property Office on Jul. 15, 1998, Dec. 3, 1998, and Jul. 29, 1999, respectively, the contents of which are incorporated hereinto by reference.
BACKGROUND OF THE INVENTION
(a) Field of the Invention
The present invention relates to a combination soap bar composition containing monoglyceridesulfonate and its manufacturing method, more particularly to a combination soap bar composition containing monoglyceride sulfonate having superior moisturizing characteristics and feel during usage as well as a method for economically manufacturing a combination soap bar containing monoglyceride sulfonate.
(b) Description of the Related Art
Toilet soap bars which are made by saponifying fatty acids obtained by decomposing fats and fatty oils using calcium hydroxide, sodium hydroxide, etc. are generally used for washing human bodies. When toilet soap bars are used frequently, their sebum constituents of skin are excessively removed and the softened stratum corneum results in a possible cause of skin irritation since toilet soap bars are strongly alkaline. That is, when alkaline toilet soap bars are repeatedly used over a long time, the skin can become dried and loses its flexibility, easily causing problems of skin roughness. Various additives in toilet soap bar compositions which supply water and oil substances to the skin have been used in order to address the problems of skin drying and skin roughness attributable to the use of these alkaline toilet soap bars. There have also been attempts to alleviate skin drying by adding cosmetic materials, e.g., excess fatty agents, wetting agents, and plant extracts to soaps.
Moisturizing agents used in toilet soap bars, which put moisture on the surface layer of skin and act to block the moisture loss from the skin, play a role to reduce the moisture loss by forming a skin protection layer. Commonly applicable moisturizing agents for skin include glycerin, sorbitol, and natural oils. These form a skin protection layer by creating a membrane on the irregularities of a skin surface that has dried out due to the frequent use of alkaline soaps so that the moisture evaporation is restrained in order to alleviate further skin drying.
However, the current moisturizing agents do not have a function to adsorb external moisture for the skin, but only function in a role of acting as a temporary protective membrane. Furthermore, the current moisturizing agents do not have long lasting effects since they are easily broken away from the skin surface due to physical influences, and also have a problem in that the soap bars in which they are added are easily hydrated and softened when they are increasingly used by a bather in efforts to sustain their effects. That is, the current moisturizing agents do not influence the physiological functions of the skin due to their temporary effectiveness and in most cases actually unfavorably influence soap properties.
There has been increased interest in the manufacturing processes of soaps in which the surfactants are less irritating to the skin and have superior moisturizing effects than those contained in the general fatty acid based soaps in order to address these problems.
For example, a method for improving the moisturizing and feel during usage of liquid type body cleansers by mixing and using anionic, nonionic, and amphoteric surfactants is disclosed in U.S. Pat. No. 5,683,683. Although characteristics which each surfactant retain show synergy effect to constrain skin drying, and hence resulting in the moisturization of the skin when amphoteric surfactants are mixed and used with combination soap bars, an excessive amount of non inoic and amphoteric surfactants in these mixed surfactants has produced problems after long term storage with soap bar discoloration and reduce degrees of bubbling .
Furthermore, U.S. Pat. No. 4,695,395 discloses that the skin protection function is provided by having acyl isethionate, an anionic surfactant, in a combination bar. Although acyl isethionate is a low skin irritant and has superior usage due to its low liquidity and high hydrophilicity compared to general fatty acid based soaps, it has disadvantages in that its high solubility causes water to be easily absorbed into soap resulting in the deterioration of soap physical properties.
Furthermore, Korean Patent Publication No. 95-12209 mentions a method for manufacturing a combination soap bar containing active constituents in which acyl isethionate, a low skin irritant anionic surfactant, is contained as a supporting cleansing constituent. However, this method has not been very economical due to the complexity of its manufacturing method which comprises processes of manufacturing in advance acyl isethionate into certain specified dimensions using fatty acids and sodium isethionate, then processing the acyl isethionate into a slurry phase at a high temperature using liquid and solid phases, ionic water, etc., with the mixing of the slurry phase with a liquid phase soap.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a combination soap bar composition which has an improved soap softness, superior moisturizing effect and usage, and is a low skin irritant.
It is an other object of the present invention to provide a method for manufacturing a combination soap bar containing monoglyceride sulfonate in which the function of combination soap bar is maintained with a simple and economical manufacturing process, wherein a combination soap bar containing monoglyceride sulfonate having superior cleansing power and moisturizing characteristics and feel during usage is produced.
The present invention provides a fatty acid based toilet bar and a combination toilet soap bar composition containing 2 to 35 weight % of monoglyceride sulfonate of the following General Formula 1 in order to achieve the above objects:
where R is an alkyl having 7 to 21 carbon atoms, and M is sodium, potassium, triethanolamine, or ammonium.
Furthermore, the present invention provides a method for manufacturing a combination soap bar containing monoglyceride sulfonate characterized in that the manufacturing processes consist of (a) manufacturing a fatty acid based liquid phase soap by adding electrolyte and neutralizer to fatty acids; (b) manufacturing mixed liquid phase soaps by adding chlorohydroxy sulfonate to the above liquid phase soaps and agitating; and (c) manufacturing soaps with the above associated soap manufacturing equipment by drying the above mixed liquid phase soaps.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
In the following detailed description, only the preferred embodiments of the invention have been shown and described, simply by way of illustration of the best mode contemplated by the inventor(s) of carrying out the invention. As will be realized, the invention is capable of modification in various obvious respects, all without departing from the invention. Accordingly, the description is to be regarded as illustrative in nature, and not restrictive.
The present invention is described in detail below.
The combination soap bar composition of the present invention contains general fatty acid based soaps as a main cleansing agent and 2 to 35 weight %, preferably 5 to 20 weight %, of monoglyceride sulfonate of the General Formula 1 below as a supporting cleansing agent.
Typical examples of monoglyceride sulfonate used in the present invention having the below General Formula 1 include sodium cocomoglyceride sulfonate, sodium tallow, monoglyceride sulfonate, sodium palm oil, monoglyceride sulfonate, sodium palm kernel monoglyceride sulfonate, etc. and a mixture made by mixing one or more of the above can be used:
where R is an alkyl having 7 to 21 carbon atoms, and M is sodium, potassium, triethanolamine, or ammonium. RCOO having the above R is obtained from single or combined fatty acids which are derived from fats of tallow or lard, plant oil such as coconut oil, palm oil,
Ahn Ho-Jeong
Choi Jung-Jin
Choi Young-Ho
Goo Je-Kwon
Huh Tae-Kyung
Baker & Botts LLP
LG Chemical Ltd.
Ogden Necholus
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