JPH0229499A - Soap composition - Google Patents

Abstract

PURPOSE:To obtain the title composition excellent in the power of dispersing lime soap in washing or rinsing by introducing a specified methyl-alpha-D- glucopyranoside compound to a soap. CONSTITUTION:A methyl-alpha-D-glucopyranoside compound of the formula [wherein R1-4 are each H, -CH2COOM, -CH(COOM)2 or -(CH2H4O)$dm$XCH2COOM: M is an alkali metal or a cationic residue of an amine or ammonia; and m is 1-10] is added to a soap, desirably, an alkali metal salt of an 8-22 C (un)saturated fatty acid.

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Advantages The present invention relates to a soap composition that has excellent lime soap dispersibility during washing and rinsing.

To Sarao 1" Soap (fatty acid alkali metal salt) has been used for a long time as a detergent for laundry, bathing, and facial washing due to its excellent safety properties.

However, when soap is used in hard water, it reacts with calcium ions in the hard water to produce insoluble lime soap, which causes various problems.

For example, when soap is used for laundry, the lime soap settles on clothing, causing yellowing of the fabric and unpleasant odors. Furthermore, lime soap deposits inside the washing machine can cause so-called
It is called "black garbage," and it sometimes causes blockages in water pipes.

Also, in the case of cosmetic soaps, they may cause unpleasant odors,
This can cause stains in the sink and bathroom.

Conventionally, dispersants for such lime soaps include ethylene oxide adducts of aliphatic higher alcohols, polyoxyethylene polyoxybrobylene block copolymers, α-
Methyl sulfofatty acids, sulfated fatty acid alkanolamides, betaine, sulfobetaine, aminocarboxylic acid type amphoteric surfactants, etc. have been proposed, but although these have shown some improvement, they are not fully satisfactory.

Problems to be Solved by the Invention An object of the present invention is to provide a soap composition that has excellent lime soap dispersibility without impairing the excellent characteristics of soap.

As a result of extensive studies to solve the above problems, the present inventors have found that by incorporating a specific methyl α-D-glucopyranoside compound into soap, the dispersing power of lime soap can be improved. The present invention has been completed based on the discovery that the present invention can be improved.

That is, the present invention relates to the general formula (I) [wherein R,, R2, R, and R4 each represent a hydrogen atom, -CH2COOM, -CH(COOM)2 or (c2H40), CH2COOM, and R , , at least one of R2, R, and R4 is -CH2COOM, CH(COOM)2 or =(C2H40), CH2COOM, M represents a cationic residue of an alkali metal, amine or ammonia, and m represents the average number of added moles of 1 to 10. ] The present invention relates to a soap composition characterized by containing the methyl α-D-glucopyranoside compound shown below.

The soap used in the present invention is a fatty acid or an alkali metal salt of an acid, preferably a saturated or unsaturated fatty acid having 8 to 22 carbon atoms, and the salt is preferably a sodium salt or a potassium salt.

The methyl α-D-glucopyranoside compound blended as a lime soap dispersant in the present invention is
), and the following compounds are representative examples.

(1) - Those in which R, R2+, R, and R4 of maximum (I) are all -C82COOM (hereinafter abbreviated as tetrabasic acid type).

(2)-R4 of maximum (I) is a hydrogen atom;

The following, where R2 and R3 are -CH2COOM,
(abbreviated as tribasic acid type).

(3)-R3 and R4 of maximum (I) are hydrogen atoms, and R
1 and R2 are -CH2C00M (hereinafter referred to as dibasic acid type).

(4) - Maximum (I) RI in which R2, R3 and R54 are all -CH(COOM)2 (hereinafter abbreviated as hebasic acid type).

4 - Those in which R1, R2, R3 and B, 4 of maximum (I) are (C2H40)-CH2COOM (hereinafter referred to as EO-attached addition oxide).

In addition, the maximum (I) methyl α-D-glucopyranoside compound is preferably a sodium salt, and these methyl α-
D-glucopyranoside compound is disclosed in JP-A No. 63-54390.
It can be easily produced by the method described in the publication.

The amount of the methyl α-D-glucopyranoside compound in the composition of the present invention is not particularly limited, but the amount of the methyl α-D-glucopyranoside compound is preferably 0.1 to 20% by weight based on the soap. It can be used in combination with other surfactants to form a composite surface, and the following subcomponents and additives may also be added.

For example, in the case of Shimokawa soap, zeolite, sodium silicate, sodium bicarbonate, sodium sesquicarbonate,
Inorganic builders such as mirabilite and phosphates, organic builders such as sodium ethylenediaminetetraacetate, sodium nitriloacetate, sodium citrate, sodium malate, and sodium gluconate, anti-recontamination agents such as carboxymethyl cellulose, other enzymes, fragrances, etc. Ingredients customary in laundry detergents can be added.

In the case of cosmetic soaps, higher alcohols, higher fatty acids,
Emollients such as higher alcohol fatty acid esters,
Ingredients commonly used in cosmetic soaps, such as binders, humectants such as glycerides and animal and plant extracts, drugs, fragrances, and pigments, can be added as necessary.

In the method for producing the soap composition of the present invention, the methyl α-D-glucopyranoside compound may be melted at the stage of neat soap, melted in the soap base, or triblended with the soap base. good. For other purposes, methods used by those skilled in the art may be followed for both clothing and cosmetics.

Examples 1 to 5 Examples 1 to 4 Hard water (calcium carbonate concentration 430 ppm) is added to sodium oleate to completely form calcium oleate, and the minimum amount of dispersant required to disperse the calcium oleate was expressed as a percentage with respect to sodium oleate, and was taken as the lime soap dispersion power.

The measurement results are shown in Table 1.

(Hereinafter, blank spaces) 夾1ヱ1Y A powdered laundry soap having the following composition was prepared by the triblend method.

■L% ・Mixed fatty acids, beef tallow: coconut oil = 8:2 > sodium, soda ash, mirabilite, methyl α-D-glucopyranoside compound (tetrabasic acid type sodium salt) Laundry powder with the following composition A soap was prepared according to Example 6.

wt% ・Mixed fatty acids, beef tallow: coconut oil = 8:2) Sodium
40・zeolite
No. 13/2 Sodium Silicate
5. Soda ash, carboxymethyl chloride, Rerose, Glauber's salt, methyl α-D-glucopyranoside compound (tribasic acid type sodium salt) ・Methyl α-D-glucopyranoside compound (hebasic acid type sodium salt) ・Mizuho 1" Ishi A laundry powder with the following composition was prepared according to Example 6.

wt% - Mixed fatty acids (beef tallow: coconut oil = 8:2) Sodium - Coconut oil fatty acid monoethanolamide - Sodium citrate Soda ash - Glauber's salt - Methyl α-D-glucopyranoside compound (dibasic acid type sodium salt) 2 - Water
10 Examples 6 to 8 and detergents from which each methyl α-D-glucopyranoside compound was removed from the formulations of Examples 6 to 8 (the decreased amount of methyl α-D-glucopyranoside compound was supplemented with Glauber's salt) were used in Comparative Example 5. ~7, and a test was conducted under the following conditions to examine the amount of lime soap.

[Conditions] ・Water (hardness) =...= 75 P Pm (Ca
cO3)・Detergent concentration ・・・・・・ 0.676 g
/ l・Contaminated cloth ・・・・ Collar stain contaminated cloth・Bath ratio ・・・・・ 40 ・Cleaning −・−Terg-0-Tometer 1
0100rP 10 minutes/Rinse ---Terg
-0-Tometer 10100 rp 2 minutes [Evaluation] The amount of lime soap generated was compared with that of synthetic detergent and evaluated according to the following criteria.

・Same level ・・・・・・○ ・Slightly inferior・・・・・・Δ ・Inferior...× The measurement results are shown in Table 2.

Table 2 Cosmetic soaps having the following composition mλ shall not be prepared by mechanical kneading method.

W 7% ・Soap base 88.9 ・Cetanol 8 ・Titanium oxide 0. Tomethyl α-D
- Glucopyranoside compound (addition acetate sodium salt with EO 3.0 (blank below)) 10 According to Example 9, a medicated soap having the following composition was prepared.

・Soap base 84.4・Titanium oxide 0. Tomethyl α-D-glucopyranoside compound (hebasic acid type sodium salt) 10・Antibacterial agent′″10.2 ・Dipotassium glycyrrhizinate 0.2・Fragrance 0.1・Water
5 *1: Product name [Irgasan DP-300J, manufactured by Ciba Geigy Co., Ltd. Cosmetic soaps of Use Examples 9 to 10 and Comparative Examples 8 to 10 from which each methyl α-D-glucopyranoside compound was removed The amount of lime soap was investigated as follows.

After wetting the answering pad and rubbing it on your palm 10 times,
I lathered it up well with an appropriate amount of water and washed my face. Next, the subjects rinsed their faces with warm water at 35°C and 2C prepared in a basin, and the amount of lime soap floating in the basin was examined.

[Evaluation] The amount of lime soap was evaluated according to the following criteria in comparison with a solid detergent based on sodium lauryl sulfate.

・Same level ・・・・・・○ ・Slightly inferior ・・・・・・ △ ・Inferior...× The measurement results are shown in Table 3.

Table 3 The present invention provides a soap composition with excellent lime soap dispersion.

Claims (1)

[Claims] 1. General formula (I) ▲ Numerical formulas, chemical formulas, tables, etc. ▼ (I) [In the formula, R_1, R_2, R_3 and R_4 are hydrogen atoms, -CH_2COOM, -CH( COOM)_2 or -(C_2H_4O)_mCH_2COOM, R
At least one of _1, R_2, R_3 and R_4 is -CH_2COOM, -CH(COOM)_2 or -
(C_2H_4O)_mCH_2COOM, M represents a cationic residue of an alkali metal, amine or ammonia, and m represents an average number of added moles of 1 to 10. ] A soap composition characterized by containing a methyl α-D-glucopyranoside compound represented by the following.