JPH02158699A - Transparent soap composition - Google Patents

Abstract

PURPOSE:To obtain a transparent soap composition having excellent transparency and workability by mechanically kneading a soap base, a specific ampholytic phosphate surfactant, sorbitol and water at specific ratios. CONSTITUTION:The objective composition contains (A) 57-92wt.% of a soap base, (B) 2-15wt.% of an ampholytic phosphate surfactant of formula (R1 is 10-18C straight-chain saturated hydrocarbon group; M1 is Na, K, diethanolamine or triethanolamine), (C) 3-13wt.% of sorbitol and (D) water and is produced by mechanical kneading process. An example of the component B is 2-(N-methyl- N-dodecylamino)ethyl phosphoric acid ester triethanolamine.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a transparent soap composition produced by a mechanical kneading method. More specifically, a transparent soap composition containing a soap base, an amphoteric phosphate ester surfactant, sorbitol, and water in specific amounts and having excellent transparency and earability is manufactured by a mechanical kneading method. The present invention relates to a transparent soap composition characterized by:

[Prior art and problems to be solved by the invention] Conventionally, transparent soaps have been made by saponifying or neutralizing mixed fats and oils such as beef tallow and coconut oil, or mixed fatty acids such as beef fatty acids and coconut oil fatty acids with an aqueous solution of caustic soda. The resulting soap dough was dissolved in lower alcohol and water, then as a clarifying agent,
Transparent soap dough prepared by adding sugar, glycerin, polyethylene glycol, etc. and heating it to make it uniformly transparent is poured into a designated molding frame, cooled and solidified, and then taken out and
After cutting, chamfering, ■drying, it is obtained by repeating the manufacturing process of ■digestion, ■pounding, ■polishing, and ■drying, but it takes a long time to manufacture and the manufacturing process is complicated. and
It has drawbacks such as extremely low productivity and high manufacturing cost.

An object of the present invention is to provide a transparent soap composition that is produced by the m-machine kneading method and has good transparency and workability.

[Means to solve the problem]

The present invention contains 57 to 92% by weight of the soap base, 2 to 15% by weight of the specific amphoteric phosphate ester surfactant described below, and 3 to 3 times the amount of sorbitol. It is a transparent soap composition containing 1.5% of water and produced by a mechanical kneading method.

The soap base used in the present invention is a known substance and is mainly a sodium salt of a fatty acid having 10 to 18 carbon atoms,
It usually contains 10 to 15% water by weight, and its blending amount is 57% by weight.
~927~92% by weight, less than 57% by weight, the soap composition extruded with the prosoder is soft and difficult to mold;
If it exceeds 92% by weight, the soap will not have sufficient transparency, which is not preferable.

The amphoteric phosphate ester surfactant used in the present invention is -
It is represented by 2-
Potassium (N-methyl-N-decylamino)ethyl phosphate, 2-(N-methyl-N-decylamino)ethyl phosphate triethanolamine, 2-(N-methyl-N=nidodecylaminoethyl phosphate sodium), 2 -(N-methyl-N-dodecylamino)ethyl phosphate triethanolamine, 2(N-methyl-N-tetradecylamino)ethyl phosphate jetanolamine, 2-(N-methyl-N-tetradecylamino) Sodium ethyl phosphate, 2-(N
-Methyl-N-tetradecylamino)ethyl phosphate potassium, 2-(N-methyl-N-hexadecylamino)ethyl phosphate sodium, 2-(N-methyl-N-hexadecylamino)ethyl phosphate ester tanolamine, 2-(N-methyl-N-octadecylamino)ethyl phosphate ester jetanolamine,
Examples include sodium 2-(N-methyl-N-octadecylamino)ethyl phosphate. The blending amount is 2 to 15% by weight, and if it is less than 2% by weight, sufficient transparency will not be obtained in the soap, and if it exceeds 15% by weight, the soap composition extruded with a pronoder will be soft. This is not preferable because it makes molding difficult.

The sorbitol used in the present invention is generally anhydrous sorbitol or a sorbitol solution.

The blending amount of sorbitol shown in the present invention is based on the pure A value, and the blending amount is 3 to 13% by weight, and if it is less than 3% by weight, sufficient transparency cannot be obtained in the soap. If it exceeds 1% by weight, the soap composition extruded by the prosoder will be soft and difficult to mold, which is not preferable.

Purified water such as distilled water or ion-exchanged water is used as the water used in the present invention. The amount of water added is approximately 3 to 15% by weight, but the amount of water added is naturally adjusted depending on the water content of the soap base, sorbitol solution, etc., and the water content of the final transparent soap composition is approximately 15% by weight. Preferably, the weight is between 255 and 25% by weight. If the amount of water is less than this range, the soap will not have sufficient transparency, and if it is more than this range, the soap composition extruded by the prosoder will be soft and difficult to mold, which is not preferred.

The soap composition of the present invention has the above-mentioned components as essential components, but other components may be added to the composition within the range that achieves the object of the present invention.

Namely, moisturizer superfatting agents used in general soaps,
Foam boosters, antioxidants, fragrances 5 dyes, PH regulators 7 metal ion sequestering agents, H fungicides and anionic surfactants (carbon number 12
~28 linear alpha olefin sulfonates) 1 Ampholytic surfactants (imidacillin type, betaine type, substituted amino acid type).

Higher fatty acid alkanolamide (higher fatty acid monoethanolamide, higher fatty acid jetanolamide, etc.) and other oily substances (lanolin, liquid paraffin, solid paraffin, etc.) can be blended together.

In addition, in the present invention, it is not necessarily necessary to add the clarifying agents used in transparent soaps manufactured by the mechanical kneading method, but in order to obtain better transparency, these clarifying agents may be added. It is preferable to mix the agent.

As this clarifying agent, polysaccharides or polyols such as sugar, glycerin, propylene glycol, alcohols, etc. are known as described in the section (Prior Art), and by selecting these as appropriate, -+i or several types may be used.

Instead, it may be added to neat soap in a clarifier, or added to soap flakes or soap pellets after a drying process using a band dryer, a vacuum dryer, or the like.

The method for producing the soap composition of the present invention includes a soap base,
Amphoteric phosphate ester surfactant, sorbitol,
This is a manufacturing method in which water and the above-mentioned optional components are mixed, if necessary, with heating, and then kneaded, extruded, and molded using a conventional mechanical kneading method.

〔Example〕

Next, the present invention will be explained with reference to Examples, but the present invention is not limited to these Examples.

In addition, each test described in this example is as follows.

(1) Transparency evaluation test The transparent soap composition was cut into sample pieces with a thickness of 1 cm, and the surfaces were further polished to make them smooth. ) was used to determine the visible light transmission rate L% of the sample piece, and this value was taken as the transparency.

(2) Workability Test Skilled technician H judged the hardness and moldability of the transparent stone 1111 product bar extruded using the processor. Moderate hardness of the bar is indicated by O, soft bar hardness is indicated by ×, good moldability is indicated by ○, and poor moldability is indicated by
...Indicated by ×.

Example 1 Soap base (Na salt of mixture of beef tallow fatty acid and coconut oil fatty acid (80:20) Brine water content 12% 67rJL i %
, 2-(N-1thiaL/-N-F tecyl7mi/)ethyl phosphate ester triethanolamine 10% by weight, sorbitol IO% by weight, water 13% by weight
are mixed in a mixer, mixed thoroughly with a roll, then extruded into a rod shape with an extruder whose nozzle was kept at 45°C, molded with a molding machine, and then kneaded with a regular mechanical kneading method. An inventive soap composition was obtained.

Comparative Example 1 Next, for comparison, 2-(N-methyl-N-dodecylamino)ethyl phosphate triethanolamine was not blended, and a soap composition (ln of beef tallow fatty acid and coconut oil fatty acid) was prepared.
Na salt of compound (80/20).

Example 1 except that 77% water content (containing 12% moisture) was used.
A soap composition of Comparative Example 1 was obtained in the same manner as in the present invention.

Table 1 shows the results of the tests conducted on these soap compositions as described above.

Table 1 As is clear from the results in Table 1, the transparency of the soap composition of the present invention (Example 1) is very high with a light transmittance of 41, whereas the soap composition of Comparative Example 1 has a very high transparency. It can be seen that the composition has an inferior light transmittance of 5, and its transparency is inferior to that of the transparent soap composition of the present invention.

Examples 2 to 5 and Comparative Examples 2 to 5 Soap compositions of Examples 2 to 5 and Comparative Examples 2 to 5 were obtained in the same manner as in Example 1 using the formulations shown in Table 2 below. The test results are shown in Table 2.

The soap base contains 10% water. As is clear from Table 2, the transparency of the transparent soap compositions of the present invention shown in Examples 2 to 5 is extremely high, with a light transmittance of 35 or more. Comparative Examples 2 and 2-(N
-Methyl-N-dodecylamino)ethyl phosphate ester Comparative Example 3 without blending triethanolamine, Comparative Example 4 without blending sorbitol, and Comparative Example 5 without blending water. It can be seen that the transparency is inferior to that of the transparent soap composition of the present invention.

Examples 6 to 9 and Comparative Examples 6 to 8 Soap compositions of Examples 6 to 9 and Comparative Examples 6 to 8 were obtained in the same manner as in Example 1 using the formulations shown in Table 3 below. The test results are shown in Table 3.

The soap base used contained 12% water.

As is clear from Table 3, the transparent soap compositions of the present invention shown in Examples 6 to 9 have very high light transmittances of 35 or more.
It also has good workability. In addition, the soap compositions shown in Comparative Examples 6 to 8 in which the blending amount of the essential components of the present invention is outside the range,
The soap composition extruded by the pronoder is soft and difficult to mold, which is undesirable, and the transparency is also poor.

Comparative Examples 9 to 11 Soap compositions of Comparative Examples 9 to 11 were obtained in the same manner as in Example 1 using the formulations shown in Table 4 below. As is clear from Table 4, Comparative Example 9 does not contain sorbitol, which is an essential component of the present invention, but contains glycerin as another clarifying agent, and Comparative Example 9 contains polyethylene glycol 600 (average molecular weight 600). The stone M&[l acids of Example 1O and Comparative Example 1 containing propylene glycol] had an inferior light transmittance of 13 or less, and their transparency was not as good as that of the transparent soap composition of the present invention. It is shown that the effects of the essential ingredients Tsuru and 1.-ru are remarkable.

Example 10 Soap base (Na salt of a mixture of beef tallow fatty acid and coconut oil fatty acid (80:20)) 70% by weight, 2-(N-methyl-N-hexadecylamino)ethyl phosphate ester jetanolamine I 4.0% by weight %, and a soap composition of the present invention was obtained in the same manner as in Example 1.

Example 1.1 Soap base (Na salt of a mixture of beef tallow fatty acid and coconut oil fatty acid (80:20)) 82.4% by weight, 2(N-methyl-N
-tetradecylamino)ethyl phosphate ester jetanolamine, 3.5% solchitol 5% by weight 5 water 8
The method of the present invention was prepared in the same manner as in Example 1 by blending 0.5% by weight of polyethylene glycol 600 (average molecular weight 600), 140.5% by weight of fragrance, and 0.1% by weight of tetrasodium edetate tetrahydrate. A soap composition was obtained.

Example 12 Soap base (N'a salt of a mixture of beef tallow fatty acid and coconut oil fatty acid (80:20)) 75.3% by weight, 2 (N-methyl-
N-dodenylamino)ethyl phosphate ester triethanolamine 10% by weight, sorbitol 8% by weight, water 5% by weight, N-mixed fatty acid-sodium L-glutamate 1
A preparation of the present invention was prepared in the same manner as in Example 1 by blending 0.11% by weight of 3゜4.4-trichlorocarbanilide, 0.5% by weight of fragrance, and 0.1% by weight of edetate tetrasodium tetrahydrate. A soap composition was obtained.

Example 13 Soap base (mixture of beef tallow fatty acid and coconut oil fatty acid (80:20) with Na salt (90:10)) 83.4
Weight%, 2 (N-methyl-Ntetradecylamino)
Potassium ethyl phosphate 5% by weight, sorbitol 5%, water 5% by weight, coconut oil alkyl N-carboquinethyl N-hydroxyethylimidazolium hetain-
Sodium 1% by weight, dye 0.01%, fragrance 0.4%
9% by weight, edetate tetrasodium tetrahydrate 0. lff1f
A soap composition of the present invention was obtained in the same manner as in Practical Example 1 by blending .fi%.

(Characteristics) In Examples 10 to 13, good results were obtained by shaking in each of the above-mentioned tests, and transparent soap compositions with good transparency produced by the mechanical kneading method, which is the object of the present invention, were obtained.

〔Effect of the invention〕

As described above, the transparent layer 11141 composition of the present invention is
Manufactured by machine kneading method, it has excellent workability and 1
i) A transparent soap composition with good brightness can be obtained, production efficiency can be increased, mass production and cost reduction can be achieved, and a useful transparent soap composition can be provided.

Claims (1)

[Claims] The soap base is 57 to 92% by weight and the general formula ▲ includes mathematical formulas, chemical formulas, tables, etc. ▼ (In the formula, R_1 is a linear saturated hydrocarbon group having 10 to 18 carbon atoms, and M_1 is sodium , potassium, diethanolamine, triethanolamine.]
A transparent soap composition produced by a mechanical kneading method, containing 2 to 15% by weight of an amphoteric phosphate ester surfactant, 3 to 13% by weight of sorbitol, and water.