JPS6011595A - Liquid detergent composition - 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 relates to a liquid detergent composition containing a specific salt of an α-sulfo fatty acid and an α-olefin sulfonate.

α-Sulfo fatty acid salts are well-known surfactants for a long time, and their use in cleaning compositions has been disclosed in Japanese Patent Publication No. 3B-25806 (1987). However, α-sulfolipid fatty acid dialkali metals have poor solubility in clean water, low cleaning power,
It is known that only foaming power can be obtained. In order to compensate for this drawback, it is used in combination with alkylbenzene sulfonate (Unexamined Japanese Patent Publication No. 4
No. 7-12582) etc. have been disclosed, but no fundamental improvement has been achieved. Furthermore, α-sulfo fatty acid salts have the problem of having a characteristic odor and leaving a residual odor on the washing liquid, on the skin of the hands after washing, and on the items being washed. As a result of intensive studies aimed at improving the drawbacks of α-sulfo fatty acid salts, the present inventors found that a composition containing a specific di-salt of α-sulfo fatty acid and α-olefin sulfone [in a specific ratio] We have discovered that the following can be achieved, and based on this knowledge, we have come to form the present invention.

That is, the liquid cleaning composition of the present invention contains the following components (,) and (b), and the weight ratio of (a)/(b) is in the range of 19/1 to 1/1. All features.

(,) General formula (wherein R is an alkyl group or alkenyl group having 8 to 16 carbon atoms, M and M' are each selected from the group consisting of magnesium and a substituted or unsubstituted ammonium group. cations that form water-soluble salts, which may be the same or different.
Sulfo fatty acid di-salt, (b) α-olefin sulfonic acid having 2 to 18 carbon atoms, alkali metal, alkaline earth metal, substituted or unsubstituted ammonium, etc.

Thione salt.

The α-sulfo fatty acid salt used as component (a) in the composition of the present invention has a structure represented by the above general formula (1), where R is an alkyl group having 8 to 16 carbon atoms or α-sulfofatty acid salts with an alkenyl group and less than 8 carbon atoms have a strong odor, and when the number exceeds 16, the solubility deteriorates. M and M' are magnesium or substituted or unsubstituted ammo = fy whiph? ), monoethanolamine,
Substituted ammoniums such as jetanolamine and triethanolamine are preferred. Specific examples of α-sulfo fatty acid salts include α-sulfolauric acid, α-sulfomiristic acid, α-sulfopalmitic acid, α-sulfohydrogenated fat it, α-sulfohydrogenated tallow fatty acid, α-sulfo Examples of fatty acids include magnesium, 2 ammonium, 2 triethanolamine, 2 diethanolamine, 2 monoethanolamine, % magnesium 1 ammonium, and % magnesium 1 triethanolamine. This α
- Sulfo fatty acid salts are produced by sulfonating fatty acids with a total carbon number of 10 to 18 using a conventional continuous thin film sulfonation device or seed type sulfonation device, and then neutralizing them, or by sulfonating fatty acid esters and then sulfonating them. Obtained by heat treatment under alkali.

The α-sulfofatty acid salt in the present invention contains 10 to
It is preferable to contain 40vt%, especially 20 to 3
It is desirable that the content be in the range of 0 wt%.

(b) i minutes of α-olefin sulfonate (AOS
) is typically made from an α-olefin with an average carbon number of 12 to 18 obtained by a wax cracking method or an ethylene polymerization method using a Ziegler catalyst. It is obtained by sulfonation with diluted gaseous anhydrous sulfuric acid, neutralization with alkali metals, alkaline earth metals, substituted or unsubstituted ammonium, and hydrolysis. The product thus obtained is usually a mixture containing the following composition: alkenyl monosulfonate 55-502H1% hydroxyalkane monosulfonate 10-45% by weight, these components further comprising several structural isomers. In the art, this mixture is expressed under the name alpha olefin sulfonate and is recognized as a single concept. Examples of neutralizing salts include sodium, potassium, magnesium, ammonium, monoethanolamine, diethanolamine, and triethanolamine. C□
The residual odor of α-8F salt cannot be improved with AOS salt of less than
Furthermore, AOS salts with a carbon number exceeding CSS cannot prevent the washing liquid from becoming cloudy.

Furthermore, the present invention has a weight ratio of (a)/(b) of 19/1 to 1/
It is necessary to contain within the range of 1, preferably 1
It is 0/1 to 2/1. If (,)/(b) exceeds 19/1, it will not be possible to prevent odor from remaining on the skin of the hands and clouding of the washing liquid, and if it is less than 1/1, the odor from remaining on the skin of the hands will tend to increase. ,
Undesirable.

In addition to the above-mentioned essential components, the cleaning composition of the present invention may optionally contain surfactants used in ordinary cleaning agents, such as anionic surfactants such as sodium alkylbenzene sulfonate and sodium alkyl sulfate; Nonionic surfactants or cationic surfactants such as lyoxyethylene alkyl ethers, stabilizers, fragrances, dyes, etc. can be added. Next, the present invention will be explained in more detail with reference to Examples.

Examples Samples were prepared with the composition ratios (weight) shown in Table 1 below, and the residual odor on hand skin and the appearance of the washing liquid were evaluated.

Three experimenters immersed their hands in an aqueous solution of 31 with a concentration of 0.06% activator for hand skin for 10 minutes at 30C ± IC, and then lightly washed their hands with 31 water. After drying with a towel, sensory evaluation of the residual odor of the hands. If all 3 people felt the residual odor, it would be ×. If 1 or 2 people felt the residual odor, it would be △. If no one felt the residual odor, it would be ○. did.

When dissolved in tap water so that the washing liquid appearance has an activator concentration of 0.06%,
A case of cloudiness was rated as ×, a case of transparency was rated as ○, and a case of intermediate was rated as △.

(Margin below) *)TEA:) Represents reethanolamine.

10-

Claims (1)

[Claims] 1. (a) General formula (wherein R is an alkyl group or alkenyl group having 8 to 16 carbon atoms, M and M' are both magnesium and a substituted or unsubstituted ammonium group) cations forming water-soluble salts selected from a group consisting of: 1- and the weight ratio (IL)/(b) is 19/1.
1/1.