JPS5945038B2 - cleaning composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel detergent composition that exhibits excellent performance for washing clothes and washing tableware.

More specifically, the present invention provides a novel detergent composition containing magnesium α-olefin sulfonate as a main component and having good properties desired as a detergent, such as detergency, foaming, rinsability, finish feel, and biodegradability. It is related to. Conventional detergents usually contain phosphate builders to enhance their cleaning power, but these phosphate builders cause eutrophication of lakes, oceans, rivers, etc., causing problems such as red tide. In recent years, there has been a desire to reduce its use, as it can cause undesirable phenomena.

On the other hand, with conventional surfactants, if the foaming property is good, the rinsing property is poor, and if the rinsing property is good, the foaming property is poor. However, this soap is effective only when used in combination with the above-mentioned phosphate builder, so it is recommended to reduce the amount of phosphate builder and use it as a rinsability improver. It was no longer effective enough.

Under these circumstances, detergents that do not require the use of phosphate builders and have excellent detergency and foaming properties, as well as good rinsing properties, have been developed. Activators have been proposed.

However, when these anionic surfactants are used to wash clothes, they become rough after drying and do not give a fluffy finish, and when used to wash tableware, they do not leave the surface drained. The disadvantage is that the liquid is poor, so-called water spots occur, and a shiny finish cannot be obtained. Therefore, in the detergent industry, there has been a strong demand for a detergent that does not require the use of a phosphate builder, exhibits excellent detergency and foaming, and has rapid foam removal during rinsing. In order to meet this demand, the present inventors have conducted various studies and found that the objective can be achieved by using an α-olefin sulfonic acid magnesium salt mixture having a specific composition as the main component. Based on this knowledge, the present invention was made.

That is, the present invention has 10 to 20 carbon atoms and an average carbon chain length of 1.
3.5 to 16.0, in which the content of the magnesium salt of α-olefin sulfonic acid with a carbon chain length of 14 is 2.
5 to 75% by weight, and the disulfonate content is 3 to 13
% by weight. Linear alkylbenzene sulfonates are commonly used as the main active ingredients in detergents currently on the market, but α-olefin sulfonates have better cleaning power than linear alkylbenzene sulfonates and are more bioactive. Because it has good degradability, it is attracting attention as a new active ingredient in detergents.

However, the sodium salt of this compound still has drawbacks in terms of rinsability and water spot formation during dishwashing, and cannot be said to be fully satisfactory.

By the way, the magnesium salt of α-olefin sulfonic acid is a magnesium salt with a carbon number of 1 obtained by the wax cracking method, the ethylene polymerization method using a Ziegler catalyst, or an improved method thereof.
Mixed α-olefins ranging from 0 to 20 are formed into a thin film, sulfonated with gaseous anhydrous sulfuric acid diluted with an inert gas, neutralized with magnesium hydroxide or magnesium oxide, and then hydrolyzed, or treated first. It can be obtained by preparing the sodium salt of α-olefin sulfonic acid, which is then converted into the corresponding magnesium salt by metathesis.

The magnesium salt of α-olefin sulfonic acid thus obtained contains a monosulfonate and a disulfonate, and the former further contains an alkenesulfonate and a hydroxyalkanesulfonate. exist.

In the present invention, the average carbon chain length of the magnesium salt of α-olefin sulfonic acid is 13.5 to 1.
6.0, and the carbon chain length of 14 is adjusted so that it accounts for 25 to 75% by weight of the total, and furthermore, the amount of magnesium salt of disulfonic acid is limited to 3 to 13% by weight. By doing so, it is possible to obtain a cleaning agent that has high detergency and foaming, and also exhibits excellent performance in terms of rinsing performance and suppression of water spot formation during dishwashing.

Therefore, the magnesium salt of α-olefin sulfonic acid used in the present invention needs to be adjusted within the above-mentioned limited range, and the magnesium salt of alkenesulfonic acid and the magnesium salt of hydroxyalkanesulfonic acid must be adjusted within the above-mentioned limited range. The ratio is between 40:60 and 90:10, preferably between 50:50 and 80:20. The cleaning agent of the present invention, which is mainly composed of a magnesium salt of α-olefin sulfonic acid that satisfies these conditions, has extremely excellent cleaning power when used as a laundry detergent, a kitchen detergent, and a jump cleaner.
Shows foaming and rinsing properties.

Furthermore, when used for clothing, it provides a good texture and fluffy finish to the clothes after finishing, and when used for the kitchen, it drains well from the surface of tableware and prevents stains such as water spots. does not occur. The cleaning composition of the present invention must contain the above-mentioned magnesium salt of α-olefin sulfonic acid, but it must also contain other ingredients such as surfactants and additives that are commonly used in ordinary cleaning agents. Agents may also be added.

Such surfactants include, for example, alkylbenzene sulfonates whose alkyl group has a carbon chain length of 10 to 18;
Alcohol sulfate ester salt, alcohol ethoxy sulfate ester salt (average number of added moles of ethylene oxide 1.0~
5.0), anionic surfactants such as α-sulfo fatty acid ester salts, alkanesulfonate salts, alcohol ethoxylates with an alkyl group having a carbon chain length of 8 to 15 (average number of added moles of ethylene oxide (EO) 5 to 5) 15), nonionic surfactants such as alkyl phenol ethoxylates, and amphoteric surfactants such as alkyl betaines and alkyl sulfobetaines. Additives for granular detergents include inorganic builders such as silicates, sodium carbonate, sodium tripolyphosphate, sodium pyrophosphate, sodium orthophosphate, alumina silicates, polycarboxylate salts (e.g. maleic anhydride, acrylic Examples include polymers of acids or copolymers with olefins), organic builders such as sodium oxydisuccinate and sodium nitrilotriacetate, organic chelating agents such as ethylenediaminetetraacetic acid, anti-caking agents, fluorescent brighteners, fragrances, etc. Can and liquid detergent, ethanol,
Urea, polyethylene glycol, fatty acid mono-, di-, and tri-ethanolamide, benzenesulfonate, p-toluenesulfonate, xylene sulfonate, benzoate, citrate, mono- and di-triethanolamine. be able to. Next, the present invention will be explained in more detail with reference to Examples.

The performance of the laundry detergent and kitchen detergent shown in each example was tested by the following method.

1. Performance of detergent for clothing (1) Detergent power test The following organic sebum components are heated and mixed at 60 to 80°C, allowed to cool to room temperature, then clay, which is an inorganic component, is added and further mixed in a mortar.

Take a small amount of dirt with a sponge, apply it evenly onto a desized, non-fluorescent cloth, and use Carl Zeiss's Elreph
Contaminate the cloth with a reflectance of 42±2% using an O photoelectric reflectance meter, and then wrap the soiled cloth with a clean sponge.

This was cut into 5 (7L x 5CTrL) to make a dirty cloth.
10 pieces of dirty cloth were placed in a bath volume of 900 m at 125°C, bath ratio 30 times,
Hardness 3 is expressed as dH'('Terg-0-TOmeter(U
．． S. (manufactured by Testing) at 120 r. p. m
．． Wash for 10 minutes.

A cloth coated with 0.6% of the organic component of artificial dirt is used to adjust the bath ratio. Rinsing is performed for 3 minutes under the same conditions as washing.
The cleaning rate is calculated by measuring the reflectance of the dirty cloth before and after cleaning and using the following formula. However, RO: Reflectance of clean cloth (%) Rs: Reflectance of dirty cloth before washing (%) Rw: Reflectance of dirty cloth after washing (%) (2) Foaming test Place the attached shirt in an electric washing machine, bath volume 301, bath ratio 30 times, temperature 25℃, time 10 minutes, hardness 3
After washing under the conditions of specific DH, the foam height was measured at three force points, and the average foam height was defined as foaming.

(3) Rinseability Test Using the foaming test method, after measuring the foam height, the state of the remaining foam in the rinse liquid at the end of two rinses is evaluated based on the following criteria.

A: No bubbles were observed.

B: A very small amount of white foam-like material is observed on the water surface.

C: Bubbles occupy 50% of the liquid surface.

D: Bubbles occupy the entire liquid surface.

E: Bubbles occupy the entire liquid surface and the bubble height is several M7! It is L or more.

(4) Texture test 30CT1LX15? Terg-0-TO clean towel
After washing in a mer at a bath ratio of 30 times, a temperature of 25° C., a time of 10 minutes, and a hardness of 3 baths DH, it is air-dried.

This operation is repeated 5 times and evaluated by Schietzhue's paired comparison method. ．． Kitchen detergent performance (1) Foaming power test A dish contaminated with butter (0.5 gr/ The front surface of the dish was rubbed 5 times and the back surface 3 times with a sponge, and the number of dishes washed until the foam height of the washing liquid reached 1 mm was defined as the foaming power.

(2) Rinseability test Concentration 0.15%, liquid temperature 2 in the same container as the foaming power test
Spinach 300f was shaken and washed 10 times in sample solution 31 at 5°C, and then shaken and rinsed 5 times in distilled water.
The standing water was repeatedly changed until no bubbles were observed in the standing water, and the evaluation was made based on the number of times the standing water was replaced.

(3) Water/spot evaluation Apply 0.5g of butter to the inside of the glass tip,
After air-drying, scrub the inside with a sponge five times and the outside four times in a detergent solution with a concentration of 0.15% and a liquid temperature of 25°C.

Rinse the cleaned glass tip three times with overflow tap water. 105℃ after immersion in oil-based blue dye aqueous solution
The evaluation is based on the number of water spots remaining inside the cup after drying for 40 minutes. Example 11 ★ A cleaning composition with a concentration of 0.03% was prepared using various magnesium salts of α-olefin sulfonic acid (AOS) with different carbon numbers, Cl4 contents, and disulfonate contents.
We tested its performance as a laundry detergent and as a kitchen gate cleaner.

The results are shown in Table 1. For comparison, the sodium salt of α-olefin sulfonic acid (AOS), the sodium salt of linear alkylbenzene sulfonic acid (LAS), the sodium salt of alkyl sulfate (AS), the sodium salt of alkyl 9
The case of a cleaning composition prepared using the sodium salt of ether sulfate (AES) is also described. In this table, the cleaning power is over 80 and the foam height is 30m77! As mentioned above, those with rinsability A or B can be used sufficiently as laundry detergents, and those with foaming power of 15 or more, rinsability of 2 or less, and 5 or less water spots are suitable for kitchen cleaning. It can be used satisfactorily as an agent.

As is clear from these results, the detergent containing the magnesium salt of α-olefin sulfonic acid as a main component of the present invention exhibits excellent performance as both a detergent for clothes and a detergent for kitchen use.

Example 2 Black 3 in Example 1, fl). Sample No. 7 was tested for the feel of the washed fabric using a known heavy granular detergent having the composition shown below as a control, and both samples showed better results.

For comparison, black 13, black 19, and black 2 in Example 1 are also shown.
When the same operation was performed on the second sample, both results were equivalent to the control. Example 3 Various clothing detergents, kitchen detergents, and JUMP products having the compositions shown in Table 2 were prepared, and the performance of each was examined, and all were found to have excellent performance.

Claims (1)

[Claims] 1 Carbon number 10-20, average carbon chain length 13.5-16.
0, the content of the magnesium salt of α-olefin sulfonic acid having a carbon chain length of 14 is 25 to 75% by weight.
A cleaning composition characterized in that the disulfonate content is in the range of 3 to 13% by weight.