JPS62119298A - Solid 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 [Industrial Field of Application] The present invention relates to a solid cleaning agent. More specifically, the present invention relates to a solid detergent that has improved usability and provides a smooth feeling to the skin during and after use without adversely affecting foaming or the solid physical properties (swelling, cracking, etc.) of the solid detergent.

[Prior Art 1] Since solid cleaning agents are intended for the human body, in addition to their original function of "cleaning", they are required to have a pleasant feeling during and after use. The preferred feeling of use here means that the skin feels smooth during and after use, and does not experience excessive sensations such as pinching or tightness. For this reason, solid detergents have traditionally been
Various substances have been blended as usability enhancers.

For example, by adding a small amount of oil, such as higher alcohol or hydrocarbon, to provide a smooth feeling during use, or by adding a moisturizing agent, such as propylene glycol. Efforts have been made to impart a moist feel.

However, when these conventionally used substances are blended, they often have a large effect on other physical properties, such as extremely worsening foaming or adversely affecting the solid physical properties of solid detergents. was desired.

[Problems to be Solved by the Invention] As a result of intensive research in response to the current situation, the present inventors have found that by incorporating polyoxyethylene glyceryl ether fatty acid ester, the foaming and solid properties of solid detergents can be improved. To obtain a solid detergent that gives a smooth feeling to the skin during and after use without adversely affecting the skin, and does not give an excessively scratchy or tight feeling, and the present invention has been completed.

[Means for Solving the Problems 1] That is, the present invention provides a solid cleaning phase characterized by blending polyoxyethylene glyceryl ether fatty acid ester.

Hereinafter, the configuration of the present invention will be explained in detail.

The average number of moles of ethylene oxide added to the polyoxyethylene glyceryl ether fatty acid ester used in the present invention is in the range of 10 to 100 moles, preferably 40 to 60 moles.

For the alkyl chain of the fatty acid ester, a CI2 to C20 fatty acid is used, and stearate, isostearate, and palmitate are particularly preferable, and diester and triester may be used, but monoester is particularly preferable.

There is. ] The blending amount of polyoxyethylene glyceryl ether fatty acid ester in the present invention is 0.1% of the total amount of the solid detergent.
~5.0% by weight is preferred, more preferably 0.2~
The range is 3.0% by weight.

By blending the polyoxyethylene glyceryl ether fatty acid ester in the above amount, it is possible to impart a smooth feel during and after use without adversely affecting the foaming and solid properties of the solid cleaning F1. If the amount is less than 0.1% by weight, the smooth feel will not be satisfactory, and if it is more than 5.0% by weight, the solid detergent will tend to soften.

As the surfactant used as a base for the solid washing phase of the present invention, higher fatty acid salts, alkyl sulfates, acyl isethionates, N-acyl acidic amino acid salts, sucrose fatty acid esters, etc. are used. The species or two or more species are arbitrarily selected. In particular, the best effects can be obtained when higher fatty acid salts are used.

In the present invention, polyoxyethylene (hereinafter, POE
In addition to glyceryl ether fatty acid ester,
It is of course possible to mix in general ingredients and additives applied to solid detergents as necessary, and also to use usability improvers conventionally used. Immediately, t-
Higher alcohols, lanolin derivatives, oily ingredients such as liquid paraffin, humectants such as propylene glycol, glycerin, and polyethylene glycol, water-soluble polymer substances (including anionic, nonionic, and cationic substances), talc, kaolin, Alumina, zinc white, silica, titanium white,
Powders such as calcite, emery, and dolomite, medicines such as vitamins, preservatives, sequestrants such as edetic acid (EDTA), fungicides such as zinc pyrithione, animal and plant extracts such as lecithin, gelatin, etc. It can contain derivatives thereof, pigments, fragrances, polymer mold powders such as nylon, polyethylene, etc. Naturally, these must be used within a qualitative and quantitative range that does not impair the effects of the present invention.

The present invention is applicable regardless of whether the solid detergent is transparent or opaque in appearance.

Next, examples of the present invention will be shown. Note that the blending amount is in weight%. In addition, the effects were measured using the following test methods and evaluation methods.

(1) Usability test For each sample, a panel of 10 people (5 men and 5 men) was used, and either the left or right face was washed with the sample and the other face was washed with the control, rinsed, and wiped with a towel. Afterwards, the left and right usability (smoothness during use and after use) was evaluated.

0: Very good usability When 8 to 10 people out of 10 answered that the usability of the sample side was better than that of the control.

O...Good convenience 6-7 out of 10 people compared to control The answer is that the usability of the sample side is good. If

△・・・Usability is average 4-5 out of 10 people compared to control The answer is that the usability of the sample is good. If

×・・・Poor usability 0-3 out of 10 people or compared to control The answer is that the usability of the sample side is good. If

(2) Foaming The usability test above was conducted using a panel of 10 people, and foaming was evaluated using the same evaluation criteria.

(3) Solid physical property test i) Swelling test method A weighed sample is suspended from a wire and immersed in 200 mL of tap water kept at 20°C. After 2 hours, it was taken out, its weight was measured, and the degree of swelling (% water absorption) was determined using the following formula.

b-(a-c) Swelling degree (water absorption %) = X100- C However, a: Weight ffi before immersion (g) b = Weight after immersion (g) C: Weight dissolved in water (g) 0.・Swelling resistance: Very good, swelling degree less than 17% ○・
・ Horn: Good, degree of swelling 17% or more and less than 21χ △...
Horn: Normal, degree of swelling is 21% or more and less than 25% ×...
Horns: Bad, degree of swelling 25% or more ft) Crack test method Using a wire, soak the sample in tap water maintained at 5°C for 2 hours. Thereafter, the sample was taken out and left in a blower type high temperature tank maintained at 5° C. for 24 hours, and then the degree of cracking was determined.

0...Crackability; very good, no cracks, or very slight cracks.

○... Horns: Good, shallow and small cracks.

△... Horns: Normal, shallow and medium cracks.

×・・・Nol　; Bad, cracks all over or deep cracks The results are shown in Table 1.

As is clear from Table 1, the present invention is smooth, foamy,
Excellent swelling and cracking effects.

Example 9 (wt%) P O
E (40 mol addition) Glyceryl distearate 1.5E D T A
0.3 fragrance
1.0 Soap base (soap base obtained from beef tallow/coconut oil = 80/20) When a solid detergent with the above composition is prepared by a conventional method, the skin feels smooth during and after use. Moreover, it did not cause swelling, cracking, etc., and had excellent solid physical properties.

Example 10 (wt%) P O
E (50 mol addition) Glyceryl tripalmitate 4.0E D T
A 0.2 fragrance
2.5 Soap base (soap base obtained from beef tallow/coconut oil = 70/30) When a solid detergent having the above composition is prepared by a conventional method, it feels smooth on the skin during and after use. Moreover, it did not cause swelling, cracking, etc., and had excellent solid physical properties.

Example 11 (wt%) P
OE (60 mole addition) Glyceryl monostearate 2.5 Setanol 5. ON-acylglutamic acid monosodium salt (acyl group; mixed fatty acid residue) 80.0 Titanium dioxide 0.3E D T A
0.3 fragrance
1.0 ion exchange water
When the solid detergent having the above-mentioned composition was prepared by a conventional method, it felt smooth on the skin during and after use, did not cause swelling or cracking, and had excellent solid properties. .

Example 12 (wt%) POE
(60 moles added) Glyceryl diisostearate 4.0 Lanolin
2.5 Liquid paraffin
0.5 paraben
0. IN-acylglutamic acid monosodium salt (acyl group; mixed fatty acid residue)5. O E D T A O,2
Fragrance 1.5 Soap base (soap base obtained from beef tallow/coconut oil = 70/30) Residual When a solid detergent with the above composition is prepared by a conventional method, it feels smooth on the skin during and after use. Moreover, it did not cause swelling, cracking, etc., and had excellent solid physical properties.

[Effects of the Invention] In the present invention, by adding an appropriate amount of polyoxyethylene glyceryl ether fatty acid ester to the solid flow agent, a solid detergent composition that has smoother flow during and after use. It provides: It also had good skin safety, cleansing power, and foaming properties. Moreover, the solid physical properties such as swelling and cracking were also excellent.

Claims (1)

[Claims] A solid cleaning agent characterized by containing polyoxyethylene glyceryl ether fatty acid ester.