JPS5945039B2 - cleaning composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a detergent composition, and more particularly to a detergent composition with excellent performance such as detergency and foaming power.

The most common conventionally used surfactants are alkylbenzene sulfonates.

However, when alkylbenzene sulfonates are used in kitchen detergents, they have the disadvantage of considerably inferior detergency and foaming, and when used in clothing detergents, the detergency is greatly affected by the hardness of the water, and condensed phosphoric acid The drawback was that a large amount of salt had to be added. In addition, in recent years, biodegradability has become an issue in connection with environmental conservation, but alkylpentylsulfonates that have a benzene ring are also satisfactory in terms of biodegradability. It wasn't. The inventors of the present invention have conducted extensive research to overcome the drawbacks of conventional detergents and develop detergents that meet the needs of the times. AOS) and secondary alkanesulfonate (SA
The present invention has been completed based on the discovery that the cleaning performance of the cleaning composition is synergistically improved when magnesium salt is added to S) in a specific ratio and a certain proportion or more of these anionic surfactants are magnesium salts. It came to this.

That is, the present invention contains an α-olefin sulfonate having 10 to 20 carbon atoms and a secondary alkanesulfonate having 10 to 18 carbon atoms in a weight ratio of 95:5 to 40:60. , at least 40% of this both anionic surfactant
The present invention provides a cleaning composition characterized in that % by weight is a magnesium salt.

The α-olefin sulfonate of the present invention has 10 to 2 carbon atoms.
0 carbon atoms is suitable, and the average carbon number is 13.5 to 16.
It is preferable that the number of carbon atoms is 0 and that the number of carbon atoms is 14 or more than 25%.

Usually, α-olefin sulfonates mainly include alkenyl sulfonates and hydroxyalkanesulfonates,
Although some disulfonate is included, the ratio of alkenyl sulfonate to hydroxyalkane sulfonate is preferably 40:60 to 90:10, and 50:5 by weight.
0 to 80×20 is more preferable.

Further, the amount of the disulfonate is preferably 3 to 13% by weight. The α-olefin sulfonate of the present invention can be obtained by sulfonating an α-olefin, neutralizing it with an alkali metal or alkaline earth metal, and then hydrolyzing it by a known method.

As the raw material α-olefin, those obtained by, for example, a wax cracking method, an ethylene polymerization method using a Ziegler catalyst, or an improved method thereof are used. The secondary alkanesulfonate of the present invention preferably has 10 to 18 carbon atoms. This alkanesulfonic acid salt can be obtained, for example, by subjecting n-paraffin having 10 to 18 carbon atoms to so-called sulfoxidation to form an alkanesulfonic acid, followed by neutralization. The blending ratio of α-olefin sulfonate and secondary alkanesulfonate of the present invention is 95:5 to 40:60 by weight, and outside this range, both detergency and foaming power are insufficient. becomes.

Further, in these anionic surfactants, it is necessary that the magnesium salt content is 40% by weight or more. If the amount of magnesium salt is less than this, both the detergency and foaming power will be significantly reduced. In addition to the above-mentioned components, the cleaning composition of the present invention may also contain, for example, in the case of granular detergents, inorganic builders such as sodium silicate, sodium carbonate, sodium tripolyphosphate, sodium pyrophosphate, sodium orthophosphate, and aluminosilicate; Carboxylic acids (e.g. maleic anhydride, polymers of acrylic acid or copolymers with olefins), sodium oxydisuccinate, organic builders such as NTA, organic chelating agents such as EDTA, anticaking agents, fluorescent brighteners, Fragrances, etc., and in the case of liquid detergents, ethanol, urea, polyethylene glycol, mono-, di-, and triethanolamide of fatty acids, benzenesulfonate, paratoluenesulfonate, xylene sulfonate, benzoate, citrate, Conventional ingredients such as mono-, di-, triethanolamine, EDTA, etc. can be added.

In addition, anionic surfactants such as linear alkylbenzene sulfonates, alcohol sulfate ester salts, alcohol ethoxy sulfate ester salts, alcohol ethoxy Of course, nonionic surfactants such as esters, alkyl phenol ethoxylates, and amphoteric surfactants such as alkyl betaines and alkyl sulfobetaines can be incorporated. The detergent composition of the present invention has excellent biodegradability and exhibits high detergency and foaming power even without the addition of condensed phosphate.

Furthermore, this composition is excellent from the viewpoint of environmental conservation. The composition of the present invention is suitable as a general-purpose cleaning agent such as a kitchen detergent and a laundry detergent.

Next, the present invention will be explained in detail based on examples.

Note that the detergency and foaming power were measured as follows. Cleaning power: After dissolving 10 y of each of Japanese soybean oil and beef tallow in chloroform, a 76 mm x 2611 x 1.
A 371tm glass plate is immersed and then the chloroform is air dried to create a contaminated plate.

A set of six contaminated plates is washed in a detergent solution (concentration 0.15%) for 3 minutes with stirring, and the dirt removal rate is calculated from the amount of dirt before and after washing. The temperature was 25℃ and the stirring speed was 250r.
．． p. m. And so.

Foaming power: In a vat with a diameter of 30CTn and a height of 12F containing a detergent solution with a volume of 31, a concentration of 0.15%, and a liquid temperature of 25°C, the surface of a dish (0.5y/dish) contaminated with butter was 5 times,
Scrub the back side three times with a sponge until the foam height of the washing liquid is 1.
m7! The number of dishes washed until L was reached was defined as the foaming power.

Example 1 The following cleaning agent composition was prepared using magnesium salt of α-olefin sulfonic acid (AOS-Mgl/2, Cl4/Cl6=1/
1) and the sodium salt of a secondary alkanesulfonic acid having 14 to 18 carbon atoms (SAS-Na) were varied as shown in Table 1, and the detergency and foaming power thereof were measured.

The results are shown in Table 1. As is clear from the results in this table, the detergent compositions of the present invention (Experimental Waterfalls 1 to 3) are different from those of the comparative examples (Experimental Waterfalls 1 to 3), which are outside the scope of the present invention in both detergency and foaming power.
This is better than experimental results 4 and 5).

Example 2 By the same method as in Example 1, the blending ratio of α-olefin sulfonate (Cl4/Cl6 = 1/1) and secondary alkanesulfonate was set to 75:25 by weight, and the magnesium salt content was The cleaning power and foaming power were measured with various changes.

The results are shown in Table 2. From the results in this table, the cleaning compositions of the present invention (Experiment Taki 6 to 8) with a magnesium salt content of 40% by weight or more have both cleaning power and foaming power, and the comparative examples (Experiment S) with a magnesium salt content of less than 40% by weight. ). 9, 10).

Example 3 Detergents with various formulations shown in Table 3 were prepared, and their cleaning power was evaluated. The results of measuring foaming power and foaming power are shown below.

Claims (1)

[Claims] 1 Contains an α-olefin sulfonate having 10 to 20 carbon atoms and a secondary alkanesulfonate having 10 to 18 carbon atoms in a weight ratio of 95:5 to 40:60, and has the above-mentioned surface activity. A cleaning composition characterized in that at least 40% by weight of the agent is a magnesium salt.