JPS591600A - Detergent - 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 The present invention improves the physical properties of fatty acid sodium soap or fatty acid potassium soap.

It goes without saying that soap must have appropriate cleaning power, but the commercial value of soap is not limited to its cleaning power; soap is also required to have various other physical properties. . Examples of physical properties other than detergency include creamy foam, foaming that does not disappear easily, good rinsability with water, and no feeling of sliminess or tightness after use. Furthermore, in the case of solid soap, it is difficult to dissolve in water and does not lose its shape, in the case of transparent soap, transparency is maintained and improved, and in the case of liquid or cream soap, the viscosity changes depending on the season. There are some cases where there are few. In order to make soap possess these physical properties, many researchers, mainly soap manufacturers, are trying to improve the blending ratio of various fatty acids, or adding different anionic, nonionic, or amphoteric surfactants. , higher alcohols, glycerin monofatty acid esters, sorbitol fatty acid esters, sorbitan fatty e esters, and polyoxyethylene fatty acid esters. However, it is not easy to provide soap with these physical properties, and a simple and appropriate method has not yet been found.

The present inventors conducted various studies to develop a method for easily manufacturing soap that has these physical properties and is comfortable to use.
It happened to be discovered that by adding a specific polyoxyethylenetriol fatty acid ester to the sodium or potassium salt of a fatty acid, an excellent soap having the above-mentioned physical properties could be obtained, and based on this, the present invention was completed. Ta.

That is, the present invention provides a triol consisting of a sodium salt or a potassium salt of a fatty acid having 8 to 24 carbon atoms, glycerin, castor 7' oil, or hydrogenated castor oil, each hydroxyl group containing at least one molecule of ethylene. A polyoxyethylene triol di- or trifatty acid ester to which an oxide is added and the total number of the added ethylene oxide molecules is 60 or less, and a fatty acid having 12 to 24 carbon atoms is ester-bonded to the ethylene oxide bond terminal. The present invention relates to a detergent containing the following.

Fatty acid salts) IJum salts and potassium salts have cleaning power and can be used as stone gun, and have a carbon number of 8.
~24. By way of example, mention may be made of the sodium and potassium salts of lauric acid, myristic acid, stearic acid, glumitic acid, oleic acid and the like. In terms of raw materials, examples include thorium salts and potassium salts of fatty acids such as coconut oil fatty acids, gum oil fatty acids, beef tallow fatty acids, soybean oil fatty acids, and hydrogenated oil fatty acids.

The triol forming the basic skeleton of polyoxyethylene triol or i-su fatty acid ester is either glycerin, castor oil or hydrogenated castor oil. At least one molecule of ethylene oxide is bonded to each hydroxyl group of this triol, and the total number of ethylene oxide molecules bonded to this hydroxyl group in a chain is 60 or less, preferably 20 to 40. be. At least two of the three ethylene oxide chains thus formed must have a fatty acid having 12 to 24 carbon atoms ester bonded to their terminal ends. This fatty acid may be saturated or unsaturated, and may or may not be branched. Examples of fatty acids include stearic acid, isostearic acid, oleic acid, lanolic acid, behenic acid, and the like.

The general formula of polyoxy7ethyleneglycerol trifatty acid ester, which is one of the compounds of the present invention, is shown below.

l CH2-0-CH2-CI(2(-O-CH2-CH2
+aO-〇-R4O<: a 10b + c<57 It goes without saying that the polyoxyethylenetriol diotake trifatty acid ester may be used alone, or two or more types may be used in combination.

The polyoxyethylene triol or trifatty acid ester is not particularly limited as long as it is a compound within the above range, but when used in a solid cloth ken, the fatty acid should be a C48-22 saturated fatty acid, such as stearic acid. Behenic acid is soluble in water, has a strong anti-swelling effect, and is in the form of a cream or liquid stone (5) In the case of Ken, unsaturated substances such as oleic acid or branched substances such as isostearic acid have a greater effect in preventing viscosity changes. . Furthermore, unsaturated fatty acids or branched fatty acids are also suitable when transparency is required.

Ingredients other than those listed above may be appropriately selected from known additives for sodium fatty acid or potassium fatty acid bases, such as fragrances, dyes, pigments, moisturizing agents, builders, and anionic additives. A surfactant, an amphoteric surfactant, fatty acid ethanolamide, etc. may be appropriately selected and added.

In addition, as with other fatty acid sodium salt-based or potassium salt-based soaps, it is preferable that not only liquid soaps but also solid cloth soaps contain water or a mixture of water and a hydrophilic organic solvent.

As the hydrophilic organic solvent, it is preferable to use ethanol, ethylene glycol, glopylene glycol, glycerin, etc., which are commonly used for cosmetics.

The composition includes fatty acid thorium salt and potassium (6) lamb salt of about 5 to 59 weight degrees, polyoxyethylene triol di- and trifatty acid ester of 3 to 20 weight degrees,
The sum of water and the hydrophilic organic solvent is about 5 to 90% by weight, and the other components are about 0 to 30% by weight.

Among these, in the case of solid soap, fatty acid sodium salt and potassium salt are about 50 to 95% by weight, usually 60% by weight.
By weight, the polyoxene ethylene triol and l-fatty acid ester increase by 3 to 20 weight, and the sum of water and the hydrophilic organic solvent increases by 3 to 20 weight.

On the other hand, in the case of liquid or cream soft soap, fatty acid sodium salts and potassium salts are about 5 to 60% by weight, usually about 15 to 50% by weight, and polyoxine ethylene triol di- and 1-tri fatty acid esters are about 3 to 60% by weight. 20
Weight ratioThe sum of water and hydrophilic organic solvent is 20~
It weighs about 90% more.

The detergent of the present invention may be produced by any conventional method for producing sodium salt or potassium salt detergents, except for adding polyoxyethylene triol or trifatty acid ester. There are many characteristics in the order of addition of trifatty acid esters, etc.

The present invention improves the foaming properties and foam persistence of fatty acid sodium salt-based and potassium salt-based detergents, and makes the foam quality creel, thereby improving water rinsability and improving the after-use window. The present invention can improve the water solubility of solid soaps and prevent the soap from swelling and losing its shape, and in particular strongly prevents so-called perfume-filled soaps containing a large amount of fragrance from dissolving and breaking down. For example, polyoxyethylene glycerol tristearate is added to fatty acid potash solid soap containing 3% by weight of rose fragrance.
By adding a certain amount of weight, it can be melted to the same extent as a normal stone gun and eliminate the possibility of crumbling. Furthermore, in the case of transparent soap, it is possible to prevent clouding and increase transparency, and to maintain this transparency, and in the case of liquid soap, it is possible to reduce changes in viscosity depending on the season. The detergent of the present invention can be used for all purposes of conventional fatty acid storium soaps and potash soaps, and greatly increases the commercial value of the conventional fatty acid salt cloth soaps.

Examples are shown below.

(9) Example 1 Polyoxyethylene glycerol tristearate (GWS-3) having different numbers of ethylene ogizide molecules was kneaded with fatty acid sl/lium soap in the proportions shown in Table 1,
46B@X 60mm×] It was molded into a 5mm square.

The results of measuring various physical properties of the obtained solid soap are shown in the same table.

In addition, the dissolved amount in the same table is obtained by completely immersing the soap in water at 25° C., leaving it to stand, and after 24 hours, taking out the soap and measuring the dissolved amount. Other results are based on evaluations made using lukewarm water by a panel of 30 men and women between the ages of 18 and 45.

t18A Table 1 Example 2 Various types of polyoxyethylene glycerol tristearate-1-(GWS-3) with different numbers of ethylene oxide added molecules were kneaded into a transparent soap fabric made of sodium fatty acid so that the weight ratio was 5. 4.5crnX 6.5c! nX 2
It was molded into a rIn rectangle. Table 2 shows the results of measuring various physical properties of each of the obtained transparent solid soaps.

In addition, each evaluation was performed by naked eye observation,
The best one is rated 1 and the worst one is 5. That is, the one with the least swelling and solubility is 1. Both swelling and solubility are measured in 10ml of water at 25°C.
This was done by dipping soap into a soap dish filled with soap.

Table 2 Example 3 Liquid soap containing 33% by weight of Coconut Oil 9 Soap with various numbers of ethylene oxide added to it (I-Rioki/Ethylene Glycerol Triisostearate) (GWIS-
3), polyoxyethylene glycerol noin stearate (GWIS-2), polyoxy 7 ethylene glycerol trilaurate (GWL-3), polyoxy/ethylene glycerol tribeheninate (GWB-3)1.
f? Either IJ oxyethylene castor oil triisostearate (CWIS-3) or polyoxyethylene hydrogenated castor oil triisostearate (13) (RWIS-3) was added in an amount of 7.5% by weight. Table 3 shows the results of measuring various physical properties of each of the obtained liquid soaps.

In addition, each evaluation was performed by naked eye observation.
The numbers are displayed with 1 being the best and 5 being the worst. Therefore, the foaming property is rated 1 if the foam is the easiest to form, and the foam sustainability is 1 if the foam lasts. As for the foam quality, the one with the most IJ-me quality is displayed as 1.

(14) Table 3 (15) =725-

Claims (1)

[Claims] A sodium or potassium salt of a fatty acid having 8 to 24 carbon atoms, and a triol of glycerin, castor oil, or hydrogenated castor oil, each hydroxyl group having at least one molecule of ethylene oxide added to it. The total number of added ethylene oxide molecules is 60 or less, and the ethylene oxide bond terminal has 12 to 2 carbon atoms.
Detergent containing polyoxyethylenetriol di″!. or trifatty acid ester in which the fatty acids No. 4 are ester bonded