JPH06134275A - Production of easily water-dispersible composition - Google Patents

Abstract

PURPOSE:To obtain a compsn. excellent in water dispersibility and dispersion stability and advanced in fine particulation by self-collapsibility in water by the dry melting of a metal salt of aliphatic carboxylic acid and a metal salt of alkylarylsulfonic acid. CONSTITUTION:A compsn. is constituted of 60-95wt.% of a compd. A represented by formula P2M and 5-40wt.% of a compd. B represented by formula I. This compsn. is produced by performing the synthetic reaction of both compds. A, B in the same reaction container according to the dry melting (direct) method. M in the compds. A, B is one or more kind of Zn, Ca and Mg and R of the compd. A is a 12-30C saturated or unsaturated monocarboxylic acid and R of the compd. B is an alkylaryl group. As a result, the compsn. excellent in water dispersibility and dispersion stability and advanced in fine pulverization by self-collapsibility in water can be obtained.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a composition which is easily dispersed in water and a method for producing the same.

[0002]

2. Description of the Related Art An aqueous dispersion of metal soap is a rubber anti-adhesive,
It is widely used as a lubricant for coated paper and as an additive for thermal paper. A metal soap is an aqueous dispersion of a metal soap obtained by reacting a conventionally saturated or unsaturated monocarboxylic acid with an oxide or hydroxide of a Group II metal of the periodic table in order to form a water dispersion having strong water repellency. In the presence of 40 to 200 parts by weight of water and an emulsifying dispersant with respect to 100 parts by weight of the metal soap, the mixture is reacted at 80 to 150 ° C. under high speed stirring to obtain an aqueous dispersion of the metal soap. It was a general manufacturing method.

However, the conventional one has a problem in dispersion stability, and since only a relatively low concentration can be obtained, there is a demerit that the transportation cost becomes high. Further, in the case of high concentration, the workability was remarkably impaired because the viscosity increased or solidified during storage.

[0004]

In order to produce an aqueous dispersion of a high-concentration metal soap, the conventional method has poor productivity,
There are problems such as large changes over time, poor handling, and high transportation costs. Further, in order to disperse a metal soap having a low water content in water, there is a problem that a large amount of a surfactant is used, and grinding and selection of a dispersing device are complicated to obtain fine particles.

[0005]

As a result of intensive studies to solve these problems, the present inventors have found an easily water-dispersible composition having a water content of 2% or less and a method for producing the same, and have found a demand. The present invention has been completed by finding that the handling is good for the house and the above problems can be solved.

The present invention will be described in detail below. The easily water-dispersible composition of the present invention is a composite composition of the compound represented by the formula [A] and the compound represented by the [B], and the method for producing the composition is that the water content is not more than 2% by the dry melting method at the weight ratio of claim 1. A composite composition is obtained, and the composite composition is easily dispersed in water.

In the composition ratio of the compound of the formula [A] and the compound of the formula [B] which are easily dispersed in water, the composition ratio of the formula [A] is 60.
~ 95 wt% and the preferred composition ratio is 70-90 wt%
Is. The composition ratio of the formula [B] is 5 to 40% by weight. When it is 5% by weight or less, the water dispersibility is poor, and when it is 40% by weight or more, the water repellency is impaired, and the preferable composition ratio is 10 to 30% by weight.

The metals of the formulas [A] and [B] are Zn, C
It consists of one or more of a and Mg.

The monocarboxylic acid of the compound of the formula [A] used in the present invention is a saturated or unsaturated fatty acid, for example, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, ricinoleic acid, behenic acid, 12 -Hydroxystearic acid and the like.

Examples of the alkylbenzenesulfonic acid of the compound of the formula [B] used in the present invention include dodecylbenzenesulfonic acid and butylnaphthalenesulfonic acid.

In the easily water-soluble dispersion composition of the present invention, an antioxidant, a defoaming agent, a lubricant (ester wax, fatty acid amide, etc.), a surfactant, etc. are mixed and used within a range not impairing the original effect. May be.

In order to obtain an aqueous dispersion by dispersing the composite composition of the present invention in water, water or the like is mixed with the powdery composite composition of the present invention to prepare a line mixer, homomixer, colloid mill or the like. A uniform dispersion can be obtained by using a known stirring device or a similar device.

[0013]

EXAMPLES The present invention will be described more specifically with reference to the following examples.

Example 1 100 g of stearic acid (NV = 202) and 25.29 g of dodecylbenzenesulfonic acid were heated to 130 ° C., 18.14 g of zinc oxide was gradually added with stirring, and then the temperature was raised to 150 ° C. The stirring was continued for 30 minutes to complete the dehydration reaction to obtain 139.4 g of a transparent melt. After cooling and solidifying the same melt, it is crushed with a crusher to give zinc stearate 80
A composite composition containing 20% by weight of zinc dodecylbenzene sulfonate and 20% was obtained. This product has a melting point of 119.2 ° C., a zinc content of 10.5%, and the water content of Karl Fischer is 0.1.
It was 7%.

Example 2 100 g of stearic acid (NV = 202) was heated to 130 ° C., and while stirring, 5.31 g of zinc oxide was gradually added to form a transparent melt.
5.75 g was added, followed by magnesium oxide 6.66.
After gradually adding g, the temperature was raised to 150 ° C., stirring was continued for 30 minutes to complete the dehydration reaction, and the transparent melt 133.4
g was obtained. The solution was cooled and solidified, and then pulverized with a pulverizer to obtain a composite composition of 30% by weight of zinc stearate, 50% by weight of magnesium stearate and 20% by weight of magnesium dodecylbenzene sulfonate. This product has a melting point of 120.5 ° C, zinc content of 3.2%, magnesium content of 4.0%, and water content by Karl Fischer of 0.9%.
Met.

Example 3 100 g of stearic acid (NV = 202) and 17.72 g of dodecylbenzene sulfonic acid were heated to 140 ° C. and 8.85 g of magnesium oxide was gradually added with stirring, and then the temperature was raised to 170 ° C. for 30 minutes. The stirring was continued to complete the dehydration reaction to obtain 122.4 g of a transparent melt. The melt was cooled and solidified, and then pulverized by a pulverizer to obtain a composite composition of 85% by weight of magnesium stearate and 15% by weight of magnesium dodecylbenzenesulfonate. This product has a melting point of 12
At 6 ° C., the magnesium content was 4.2%, and the water content by Karl Fischer was 1.1%.

Comparative Example 1 100 g of stearic acid (NV = 202) was heated to 130 ° C., 16.46 g of zinc oxide was gradually added with stirring, and then the temperature was raised to 150 ° C. and stirring was continued for 30 minutes to carry out the dehydration reaction. After the completion, 31.0 g of sodium alkylbenzenesulfonate (Kao Corporation, Neoperex No6F powder, purity 99.5%) was gradually added, the temperature was raised to 160 ° C., and stirring was continued for 30 minutes to obtain a transparent melt 15.
4.9 g was obtained. The melt was cooled and solidified and then pulverized by a pulverizer to obtain a composite composition of 80% by weight of zinc stearate and 20% by weight of sodium alkylbenzene sulfonate. This product had a melting point of 125 ° C., a zinc content of 8.5%, and a Karl Fischer water content of 0.5%.

COMPARATIVE EXAMPLE 2 100 g of stearic acid (NV = 202) was heated to 130 ° C., 16.46 g of sub-oxide was gradually added with stirring, the temperature was raised to 150 ° C. and stirring was continued for 30 minutes for dehydration reaction. After terminating, 15.5 g of sodium alkylbenzenesulfonate (Kao Corporation, Neoperex No6F powder, purity 99.5%) and polyoxyethylene nonylphenyl ether (Nippon Emulsifier Co., Ltd.,
15.5 g of Newco 1516) was gradually added and the temperature was adjusted to 1
The temperature was raised to 60 ° C. and stirring was continued for 30 minutes to obtain a transparent melt 154.
9 g of the melt was cooled and solidified, and then pulverized with a pulverizer to form a composite of zinc stearate 80% by weight, sodium alkylbenzene sulfonate 10% by weight, and polyoxyethylene nonylphenyl ether 10% by weight. A composition was obtained. This product has a melting point of 116 ° C., a zinc content of 8.5%,
The water content by Karl Fischer was 0.6%.

The average particle diameters of the composite compositions of Examples 1 to 3 and Comparative Examples 1 and 2 are sonic vibration type fully automatic sieving measuring devices (RP
S-85 ... Made by Seishin Enterprise Co., Ltd., the particle size distribution was measured, and the average particle size is shown in Table 1.

As a method for testing the stability of the aqueous dispersions of the compositions obtained in the above Examples and Comparative Examples of the present invention, 95.0 g of pure water in a 300 ml beaker, Composition 5 obtained in Examples and Comparative Examples Take 0.0 g and make a 5% diluted aqueous solution by stirring at 400 rpm for 10 minutes with a magnetic stirrer, and put each 5% diluted aqueous solution into a 200 ml graduated cylinder. I checked the number of days reached. The results are shown in Table 1.

To measure the particle size distribution of the aqueous dispersion, a SK-LMSPRO-7000S measuring machine, which is based on the diffraction principle of a laser light source and the folding principle based on the two-constant side-scattering light intensity ratio, is used. The mixing ratio of the dispersion was 0.08 ml of a commercial household detergent (Mama Royal made by Lion), 1.0 g of the compositions obtained in Examples and Comparative Examples, and 160 ml of pure water. The dispersion time was 60 seconds by ultrasonic dispersion, and then the dispersion time was 60 seconds. Stirrer stirring dispersion (400 rpm), and after 120 seconds, the particle size distribution after 30 seconds was measured while circulating to the measuring machine.

Among the above-mentioned measuring methods, ultrasonic dispersion was omitted, and after 120 seconds of stirrer stirring and dispersion, the particle size distribution after 30 seconds was measured while circulating to the measuring machine, and the average particle size is shown in Table 1.
I put it on.

[0023]

[Table 1]

[0024]

As described above, it can be seen that the composite composition of formulas [A] and [B] as shown in the examples is excellent in aqueous dispersion and dispersion stability. Further, even if a special pulverizing and dispersing device is not used, the particle size becomes small and there is a self-disintegrating property.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location C07C 57/03 9356-4H C10M 141/08 9159-4H // B41M 5/26 (C10M 141/08 129: 40 135: 10) C10N 10:04 30:04 40:00 Z 8217-4H 70:00 (72) Inventor Masanari Shigeoka 1228 Nakayamacho, Midori-ku, Yokohama-shi, Kanagawa Nitto Kasei Kogyo Co., Ltd. (72) Inventor Taira Nakayama 1186 Nakayama-cho, Midori-ku, Yokohama-shi, Kanagawa Eishin Kasei Co., Ltd. Nakayama factory

Claims (5)

[Claims] 1. A compound [A] 60 represented by the formula R ₂ M.
~ 95% by weight and formula 2. In producing the composition of claim 1, the synthetic reaction is performed by dry melting (direct) in the same reaction vessel.
Manufacturing method. 3. A compound of [A] and [B] wherein M is Zn, C
The composition according to claim 1, which comprises one or more of a and Mg, and the production method according to claim 2. 4. The portion of R in the compound [A] has 12 carbon atoms.
The composition according to claim 1 and the method according to claim 2, which comprises at least one saturated or unsaturated monocarboxylic acid consisting of -30. 5. The composition according to claim 1, wherein R in the compound [B] represents an alkyl / aryl group, and the method according to claim 2.