JP2003261860A - Rheology modifier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rheology modifier capable of imparting excellent rheological characteristics, for example, viscosity or material separation resistance properties to a slurry and imparting stable viscosity especially stable with respect to a temperature change to the slurry or an aqueous solution. <P>SOLUTION: The rheology modifier contains at least two kinds of quaternary salt type cationic surfactants (a) each having at least one 10-26C hydrocarbon group and at least one component (b) selected from an anionic aromatic compound and an inorganic bromine salt. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a rheology modifier for controlling the viscosity of slurries and aqueous solutions, and more specifically, powders used as civil engineering / building materials, secondary product materials and repair materials. A rheology modifier capable of imparting properties excellent in viscosity and material separation resistance to a water-powder slurry containing the same, a rheology modification method by adding the modifier, and the modification It relates to a slurry containing a substance.

[0002]

2. Description of the Related Art Generally, in order to control rheological properties such as viscosity in a slurry composed of water and powder, the ratio of water to powder is adjusted, the dispersion state of particles is changed by a pH adjuster, etc. Alternatively, techniques such as adding a water-absorbing polymer to control the amount of surplus water have been used.

In particular, the technique of adding a water-soluble polymer compound to a slurry system and utilizing the thickening effect by the entanglement of polymers can obtain a large thickening effect at a low cost, so that it is widely used mainly in the fields of civil engineering and construction. Has been put to practical use. For example, in Japanese Examined Patent Publication No. 5-39901, methyl cellulose,
Cellulose derivatives such as hydroxyethyl cellulose,
In JP-A-11-189452, a water-soluble polymer compound such as poly (ethylene oxide) is used in paste, mortar, underwater concrete, high-fluidity concrete, etc. in order to enhance the separation resistance of the material.

However, in order to obtain an effective thickening effect using a water-soluble polymer compound, it is necessary to use a compound having a molecular weight above a certain level, and the actually used compound has a molecular weight of several tens. Most are over a million. These water-soluble high molecular weight compounds have a large amount of water,
Unless added together with the powder and kneaded for a long time, sufficient viscosity is difficult to develop and the thickening effect cannot be obtained quickly. If it is used in advance as an aqueous solution, the viscosity of the aqueous solution will be high and the addition operation etc. However, there is a problem in that workability is reduced.

When a water-soluble polymer is used in pastes, mortars and concretes, the proportion of the powder is small (water powder ratio is 30% or more). The stability of the specific viscosity decreases, and material separation such as breathing water is likely to occur.

Further, when it is desired to make an aqueous slurry system coexist with the aqueous phase, the conventional technique elutes the slurry system into the aqueous phase,
In some cases, the initial slurry composition could not be maintained. In the field of construction and civil engineering, for example, in so-called underwater concrete intended for pouring in lakes or the sea, sufficient separation resistance in water cannot be obtained by simply adding a water-soluble polymer compound. In order to do so, an alkali metal sulfate is used in combination as in JP-B-3-38224. However,
The alkali metal salt causes a decrease in compressive strength and a remarkable decrease in fluidity of concrete depending on the amount added, and it may be difficult to produce concrete having high resistance to separation in water with stable quality. In addition, in the case of the grout method of injecting cement paste (so-called cement milk) with a high water-powder ratio into the ground for ground improvement, there is a problem that the composition of cement milk becomes unstable when groundwater flows out. is there. Further, when a copolymer is used as the high molecular compound, there is a problem that it tends to be adsorbed on powder such as cement and affect the dispersion state of the slurry. As a technique of using a surfactant to improve fluidity, there is a thickener combination for building materials described in JP-A-7-166150. This is a combination system of a nonionic cellulose ether, which is a polymer compound, and the viscosity itself can be increased, but the resistance to separation of breathing water or water has not been improved.

As a means for solving the above problems, proposals using the thickening action of surfactants have been made. However, in actual use, there is a problem that the viscosity of the slurry becomes unstable due to temperature change, and a technique that can maintain stability against temperature change has been desired. In addition, as a field other than the slurry system using the thickening action of the surfactant, for example, use as a pipe resistance reducing agent can be cited. As a technique corresponding to temperature change, the surfactant of JP-A-9-87610 can be used. Although there is a method of introducing a specific functional group, no technique has been found for achieving a response to a temperature change by blending a combination of compounds having different carbon numbers.

[0008]

According to the present invention, even when prepared in advance as an aqueous solution, the viscosity of the aqueous solution is low and there is no problem in workability, and a sufficient viscosity can be obtained by kneading in a short time when producing a slurry. In order to obtain a slurry that can be used in a wide temperature range, has stable material separation resistance, and has stable properties and composition even when the water-powder ratio is high or when it contacts the aqueous phase. An object of the present invention is to provide a rheology modifier.

[0009]

SUMMARY OF THE INVENTION The present inventors
It has been found that the above problems can be solved by using a rheology modifier containing at least two kinds of graded salt type cationic surfactants and an anionic aromatic compound or an inorganic bromine salt.

The present invention provides (a) at least 2 of a quaternary salt type cationic surfactant [hereinafter referred to as compound (a)] having at least one hydrocarbon group having 10 to 26 carbon atoms.
The present invention relates to a rheology modifier containing at least one selected from the group consisting of (b) an anionic aromatic compound and an inorganic bromine salt [hereinafter referred to as compound (b)]. The present invention also relates to a method for producing a slurry containing a rheology modifier, which comprises adding the rheology modifier of the present invention to a slurry containing powder. Further, the present invention prepares a slurry containing one compound of (a) or (b) of the rheology modifier of the present invention, powder and water, and then the compound (a) or ( It relates to a method for producing a slurry in which the other compound of b) is added. Further, the present invention is a slurry containing the rheology modifier of the present invention, in particular, the rheology modifier of the present invention, a hydraulic powder,
And a hydraulic slurry containing water.

The rheology modifier according to the present invention is an aqueous solution of the compound (a) or (b) alone, in water,
Viscosity is low in the state in which structures such as single molecules or aggregates, micelles, liquid crystals are formed, and in the state in which they are mixed, and by mixing an aqueous solution of compound (a) with an aqueous solution of compound (b), It is characterized in that the viscosity can be greatly increased and the thickening effect extends over a wide temperature range.

The aqueous solutions of the compound (a) and the compound (b), which are essential components of the rheology modifier according to the present invention, have lower viscosities than the aqueous solutions obtained by mixing the two, and rheology modifiers containing these compounds. By using the agent,
The operability of addition to the slurry becomes extremely good.

When the rheology modifier according to the present invention is added to the slurry, the rheology of the slurry is modified and the aqueous phase of the slurry is thickened within a short time. As a result, the viscosity of the entire slurry is increased. It can be increased rapidly. Further, the hydraulic slurry containing the rheology modifier of the present invention, hydraulic powder and water is excellent in material separation resistance and water separation resistance.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION <Compound (a)> As the compound (a) in the rheology modifier of the present invention, a counter ion,
At least two kinds of quaternary salt type cationic surfactants having different structures such as a group substituting a nitrogen atom, the number of cationized nitrogen and the presence or absence of a ring structure are used in combination. That is, at least one compound (a1) belonging to the compound (a) and another compound (a2) structurally different from this are used. In the present invention, the compound (a) has 10 carbon atoms.
It is preferable to use at least two kinds of compounds having at least one hydrocarbon group of No. 26 to 26 and different in the number of carbon atoms of the hydrocarbon group. 10 to 26 carbon atoms
The hydrocarbon group is preferably an alkyl group and / or an alkenyl group, particularly alkyl. The alkyl group and / or alkenyl group may be linear or branched. The weight ratio of the two compounds (a1) and (a2) is (a1) / (a) from the viewpoint of exhibiting a thickening effect over a wide temperature range.
2) is preferably 5/95 to 95/5 and 10/90 to 9
0/10 is more preferable, and 25/75 to 75/25 is particularly preferable.

When a mixture containing a plurality of compounds having different hydrocarbon group carbon numbers, such as a natural product material such as beef tallow or coconut oil, is used without changing the hydrocarbon group composition. Thus, the compound (a) of the present invention
Can be obtained. Since the corresponding temperature can be adjusted,
It is preferable to positively incorporate a quaternary salt type cationic surfactant having a different structure.

Examples of the compound (a) include alkyl (C10-26) trimethylammonium salt, alkyl (C10-26) dimethylethylammonium salt, alkyl (C10-26) pyridinium salt, alkyl ( Examples include imidazolinium salts having 10 to 26 carbon atoms, alkyl (10 to 26 carbon atoms) dimethylbenzylammonium salts, and the like. Specifically, hexadecyltrimethylammonium chloride, hexadecyltrimethylammonium bromide, octadecyltrimethylammonium chloride. , Octadecyltrimethylammonium bromide, behenyltrimethylammonium chloride, behenyltrimethylammonium bromide,
Tallow trimethyl ammonium chloride, tallow trimethyl ammonium bromide, hydrogenated tallow trimethyl ammonium bromide, hydrogenated tallow trimethyl ammonium bromide, hexadecyl pyridinium chloride, hexadecyl pyridinium bromide, octadecyl pyridinium chloride, octadecyl pyridinium bromide, 1,1-dimethyl-2- Hexadecyl imidazolinium chloride, hexadecyl dimethyl benzyl ammonium chloride, dodecyloxy propyl trimethyl ammonium chloride, tetradecyloxy trimethyl ammonium chloride, hexadecyloxy trimethyl ammonium chloride, octadecyloxy trimethyl ammonium chloride, etc. are mentioned. From the viewpoint of water solubility and thickening effect, specifically, hexadecyltrimethylammonium chloride, octadecyltrimethylammonium chloride, tallowtrimethylammonium chloride, hexadecylpyridinium chloride and the like are preferable.

In particular, when the rheology modifier of the present invention is applied to concrete or the like, a quaternary ammonium salt containing no halogen such as chlorine, bromine or iodine is used from the viewpoint of preventing corrosion of reinforcing bars and deterioration of concrete due to salt damage. It is preferable to use.

As a quaternary ammonium salt containing no halogen such as chlorine, bromine or iodine, tetradecyltrimethylammonium methosulfate, tetradecyldimethylethylammonium ethosulfate, hexadecyltrimethylammonium methosulfate, hexadecyldimethylethylammonium ethosulfate, Octadecyl trimethyl ammonium methosulfate, octadecyl dimethyl ethyl ammonium ethosulfate, behenyl trimethyl ammonium methosulfate, behenyl dimethyl ethyl ammonium ethosulfate, tallow trimethyl ammonium methosulfate, tallow dimethyl ethyl ammonium ethosulfate, hydrogenated tallow trimethyl ammonium methosulfate, hydrogenated talodime Le ethylammonium ethosulfate, tetradecyl dimethyl hydroxyethyl ammonium acetate, hexadecyl dimethyl hydroxyethyl ammonium acetate, octadecyl dimethyl hydroxyethyl ammonium acetate, tallow dimethyl hydroxyethyl ammonium acetate, and the like. From the viewpoint of water solubility and thickening effect, hexadecyl trimethyl ammonium methosulfate, octadecyl trimethyl ammonium methosulfate, tallow trimethyl ammonium methosulfate and the like are particularly preferable. The quaternary ammonium salt containing no halogen such as chlorine can be obtained by quaternizing a tertiary amine with dimethylsulfate, diethylsulfate, ethylene oxide, dimethyl carbonate or the like.

Further, as the combination of the compound (a), since a good slurry viscosity can be obtained even at a temperature of around 0 to 50 ° C., a quaternary salt type cationic interface having one alkyl group having 12 to 18 carbon atoms. A compound selected from the group of activators and a compound selected from the group of quaternary salt-type cationic surfactants having an alkyl group having 16 to 22 carbon atoms (but not the same compound as the preceding group) are blended. From the viewpoint of viscosity fluctuation in a temperature region having a thickening effect, a compound selected from the group of quaternary salt type cationic surfactants further having one alkyl group having 14 to 18 carbon atoms and carbon number It is preferable to mix with a compound selected from the group of quaternary salt type cationic surfactants having 16 to 20 alkyl groups (however, it is not the same compound as the preceding group). A combination having 2 to 4 different carbon numbers is preferable, and 2 is preferable.
Different combinations are more preferred. Among these,
(1) A combination of a compound having an alkyl group having 14 carbon atoms and a compound having an alkyl group having 16 carbon atoms, (2) a combination of a compound having an alkyl group having 14 carbon atoms and a compound having an alkyl group having 18 carbon atoms, (3) A combination of a compound having an alkyl group having 16 carbon atoms and a compound having an alkyl group having 20 carbon atoms is preferable, and particularly, a combination of a compound having an alkyl group having 16 carbon atoms and a compound having an alkyl group having 18 carbon atoms. Are preferred (the compound here is a quaternary salt type cationic surfactant).

<Compound (b)> In the present invention, as the compound (b), one or more kinds selected from anionic aromatic compounds and inorganic bromine salts are used. Of the compound (b),
Examples of compounds selected from anionic aromatic compounds include carboxylic acids and salts thereof having an aromatic ring, phosphonic acids and salts thereof, sulfonic acids and salts thereof, and specifically, salicylic acid, p-toluenesulfonic acid, sulfo. Salicylic acid, benzoic acid, m-sulfobenzoic acid, p-sulfobenzoic acid, 4-sulfophthalic acid, 5-sulfoisophthalic acid, p
-Phenol sulfonic acid, m-xylene-4-sulfonic acid, cumene sulfonic acid, methyl salicylic acid, styrene sulfonic acid, chlorobenzoic acid, etc., which may form a salt, and two or more of them may be used in combination. May be. However, in the case of a polymer, the weight average molecular weight is preferably less than 500.

Examples of the inorganic bromine salt include sodium bromide, potassium bromide, hydrogen bromide and the like.

The rheology modifier of the present invention can be applied to slurries. In the present invention, the compound (a)
From the viewpoint that the compound (b) and the compound (b) easily form an association product, the compound (b) combined with the compound (a) is particularly preferably selected from anionic aromatic compounds.
With this combination, each has low viscosity even in a concentrated aqueous solution, and even when the effective component concentration of the rheology modifier in the aqueous phase of the slurry is 10% by weight or less, an excellent slurry rheology modification effect is exhibited, and Each of them has a low viscosity even in a concentrated aqueous solution, and is preferable in terms of workability during addition. With this combination, thickening of the slurry can be achieved with an extremely low addition amount, and the same effect can be exhibited even in a slurry having a high ionic strength. It exhibits a rheological property that the resistance to material separation in this case is very stable, which was not possible with the use of conventional thickeners.

Among them, a combination in which the compound (a) is a mixture of two or more kinds of alkyl (C 10 to C 26) trimethylammonium salt and the compound (b) is a sulfonate having an aromatic ring is particularly preferable, The effect is exhibited even when the total effective concentration of the compound (a) and the compound (b) in the aqueous phase of the slurry is 5% by weight or less. In particular, when used in a slurry of hydraulic powder, among these, toluene sulfonic acid, xylene sulfonic acid, cumene sulfonic acid, styrene sulfonic acid or a salt thereof is used as the compound (b) from the viewpoint of not causing curing delay. Preferably, in particular p-
Toluenesulfonic acid or its salt is preferred.

The reason why the characteristic slurry rheological property is obtained by using the compound (a) and the compound (b) together as the rheology modifier according to the present invention is considered to be as follows. When the compound (a) and the compound (b) are mixed, an aggregate can be formed in the aqueous phase in a short time, and viscosity can be efficiently imparted. Further, this aggregate formation is uniformly formed in the slurry. As a result, the excess water is completely captured, and by suppressing the breathing water over time, it is considered that even if a slurry with a large amount of unit water is mixed, excellent properties for material separation resistance can be obtained. Further, the carbon number and structure of the hydrocarbon group of the compound (a) (straight chain, branched chain, etc.)
Since the temperature suitable for developing viscosity is determined by the combination of two or more hydrocarbon group compounds (a) having different carbon numbers and structures, a viscosity stabilizing effect can be obtained over a wide temperature range. it is conceivable that.

Since the compounds (a) and (b) have low viscosities even in concentrated aqueous solutions of each compound alone, the effective concentration of the aqueous solution before addition to the slurry is preferably 10% by weight or more, more preferably 20% by weight. % Or more, more preferably 3
By setting it to 0% by weight or more, and most preferably 40% by weight or more, productivity such as downsizing of the storage tank can be improved. This effective concentration is preferably as high as possible from the viewpoint of productivity.

A surfactant may be used in combination with the rheology modifier of the present invention. The surfactant is preferably an amphoteric surfactant or a nonionic surfactant. Particularly, betaine compounds and compounds obtained by adding alkylene oxide to alcohol are preferable.

A solvent may be used in combination with the rheology modifier of the present invention in order to adjust the viscosity. As a solvent,
Alcohol and cellosolve type solvents are preferred.

The rheology modifier of the present invention may contain other components such as a dispersant and A as long as the performance of the modifier is not impaired.
E agent, retarder, early strengthening agent, accelerator, foaming agent, foaming agent, antifoaming agent, rust preventive agent, coloring agent, antifungal agent, crack reducing agent, expanding agent, dye, pigment, scale inhibitor, slime Processing chemicals,
It may contain a preservative, an emulsifier and the like.

Since the rheology-modified slurry can be obtained by adding the compound (a) and the compound (b) to the slurry, the addition form of the rheology modifier according to the present invention is not particularly limited.

The rheology modifier according to the present invention exhibits a large viscosity when mixed even when the compounds (a) and (b) are each in the form of an extremely low-viscosity aqueous solution.
From the viewpoint of operability, when added to the slurry, each is 100 mPa · s or less, preferably 50 mPa · s or less, more preferably 10 mP · s at the temperature to be used.
It is preferably used in the state of an aqueous solution having a viscosity of a · s or less.

In the present invention, the compound (a) and the compound (b)
A method of rheology modification of a slurry is provided wherein and are added to the slurry. In that case, the compound (a) and the compound (b)
Any one of the above compounds can be added to the slurry, and the other compound can be added to the slurry.

Since the compounds (a) and (b) can be mixed in the slurry in any order, one compound is added to the slurry at an appropriate stage, and the other compound is added to the slurry at a stage where viscosity is required. Is preferable from the viewpoint of workability. The state of the compound (a) or (b) when added may be liquid or powder.

When the rheology modifier of the present invention is used in a slurry using a hydraulic powder such as cement, the hydration reaction of the cement particles can be controlled and entrained bubbles during stirring of the slurry can be suppressed. From the viewpoint, it is preferable that the compound (b) is first added to the slurry and then the compound (a) is added.

In the rheology modifier of the present invention, the molecules of the compound (a) and the compound (b) form an aggregate to exhibit a rheology modifying effect, and therefore the compound (a) and the compound ( It is appropriate to use a molar ratio as the ratio of b). The molar ratio of the compound (a) and the compound (b) (effective molar ratio) may be appropriately determined according to the desired degree of thickening, but from the viewpoint of the viscosity to be obtained and the shape of the aggregate, the compound ( a) / compound (b) = 1/20 to 4/1, preferably 1/3 to 2/1, particularly preferably 1/1 to 2/3. The molar ratio here is calculated as [sum of moles of all compounds belonging to compound (a)] / [sum of moles of all compounds belonging to compound (b)].

Further, in the rheology modifier of the present invention, the effective concentration of the compound (a) and the compound (b) in the slurry causes a large increase in viscosity even with a small addition amount. It is preferable to add to the slurry such that the total effective content of (b) and the effective concentration in the aqueous phase of the slurry is 0.01 to 20% by weight, preferably 0.01 to 10% by weight.

The compound (a) and the compound (b) in the present invention may be used in the form of an aqueous solution or a powder, and particularly, in the rheology modifier of the present invention, good slurry rheological properties are obtained in either form. Can be granted. If the compound (a) and the compound (b) are used in the form of powder in advance, the workability of slurry preparation is good by premixing one of the compound (a) and the compound (b) with the powder. Becomes However, considering that the slurry can be adjusted to a desired viscosity, it is preferable to use the compound (a) and the compound (b) without surface-treating the filler or the like, which is a constituent powder of the slurry, in advance.

The rheology modifier of the present invention can be suitably applied to a slurry having a water powder ratio (water / powder weight ratio) of 30 to 300%. As the powder for producing this slurry, a hydraulic powder having physical properties of being hardened by a hydration reaction can be used. Examples include cement and gypsum. Further, a filler can also be used, and examples thereof include calcium carbonate, fly ash, blast furnace slag, silica fume, bentonite, and clay (natural mineral containing hydrous aluminum silicate as a main component: kaolinite, halosite, etc.). These powders may be used alone or as a mixture. Furthermore, sand or gravel as an aggregate and a mixture thereof may be added to these powders as needed.
It can also be applied to a slurry of inorganic oxide-based powder other than the above, such as titanium oxide, or soil.

Further, the compound (a) and / or in the present invention
Alternatively, compound (b) and hydraulic powder can be premixed to prepare a hydraulic powder composition containing the rheology modifier of the present invention.

The rheology modifier of the present invention is added to a slurry containing powder prepared in advance, added at the time of producing a slurry containing powder, or the like to contain the modifier of the present invention. A slurry is obtained. In particular, a slurry containing one of the compounds (a) or (b) and a powder, for example, a hydraulic powder such as cement and water is prepared, and then the slurry of the compound (a) or (b) is added to the slurry. The method of adding the other compound is preferable in terms of workability. Further, the total effective amount of the compounds (a) and (b) is 0.01 to 20% by weight in the effective concentration in the aqueous phase of the slurry, and further 0.1 to 1%.
It is preferable to use 5% by weight, particularly 0.1 to 10% by weight.

[0040]

EXAMPLES The compounds shown in Table 1 were used to evaluate the rheology modifying effect on aqueous solutions and slurries. (1) Aqueous solution system The compounds in Table 1 were added to water so that the total concentration was 1.0% by weight, and the mixture was stirred for 10 seconds with a stirrer with a stirring blade, and the viscosity was measured at a predetermined temperature. However, compound c-1 is 10
Since it did not become uniform in a second, it was stirred until it became uniform and its viscosity was measured. In addition, what used 2 types of compounds together was used so that both molar ratio might be 1: 1.
The viscosity was measured using a B-type viscometer (Tokyo Keiki, DVM-B, C rotor, 0.6 to 12 r / min). The results are shown in Table 2.

(2) Cement Slurry System The compounds of Table 1 were charged and kneaded so that the concentration in water of the slurry would be the total amount shown in Table 3. In addition, what used 2 types of compounds together was used so that both molar ratio might be 1: 1. The kneading method in the case of using two kinds of compounds in combination is as follows. First, cement (400 g) and an aqueous solution of compound (b) are mixed for 30 seconds in a 500 ml stainless steel cup with a hand mixer, and then an aqueous solution of compound (a) is added thereto. Were mixed and mixed with a hand mixer for 60 seconds. here,
The total amount of the compound (a) aqueous solution and the compound (b) aqueous solution is 4
00g was used. In this case, the water of the slurry is only derived from the aqueous solutions of the compounds (a) and (b). When using the compound c-1, 400 g of cement was thoroughly mixed with 400 g of water, and 400 g of water was added and mixed for 180 seconds with a hand mixer. The relationship between temperature and viscosity of the obtained slurry was measured. The viscosity was measured after the slurry immediately after kneading was placed in a container attached to a viscometer and allowed to stand at a constant temperature (about 10 minutes) at each temperature. B type viscometer (Tokyo Keiki, DVM-B, C rotor,
0.6 to 12 r / min for 3 minutes).
The separation resistance of the obtained slurry was evaluated by the following method. The results are shown in Table 3.

<Evaluation of Separation Resistance> 10 g of the slurry prepared by the above cement slurry system is weighed and gently precipitated in a 500 mL beaker containing 400 mL of tap water at 20 ° C. The state where the slurry floated up in water was visually (visually) observed and evaluated according to the following criteria. ⊚: The aqueous phase is completely transparent, and the entire settled slurry can be confirmed. ◯: The entire slurry that settled to the bottom can be confirmed. X: The water phase becomes cloudy and the bottom of the beaker cannot be seen.

[0043]

[Table 1]

[0044]

[Table 2]

[0045]

[Table 3]

In the aqueous solution system of Table 2, the product of the present invention is 5 to 40.
The viscosity is almost constant in the range of ° C, whereas in Comparative Products 1-1 to 1-3 in which one quaternary salt type cationic surfactant is used in the compound (a), the viscosity increases depending on the temperature. The effect is different. Moreover, the viscosity was lowered in Comparative Product 1-4 using methyl cellulose. Even in the cement slurry system of Table 3, the relationship between temperature and viscosity tends to be the same as in Table 2, and the product of the present invention using the compound (a) and the compound (b) is also excellent in separation resistance. Comparative product 2-1 to 2-2
Has good separation resistance, but the viscosity changes drastically with temperature.

─────────────────────────────────────────────────── ─── Continued Front Page (51) Int.Cl. ⁷ Identification Code FI Theme Coat (Reference) C04B 24/08 C04B 24/08 24/12 24/12 A 24/20 24/20 28/02 28/02 C09K 17/02 C09K 17/02 P 17/14 17/14 P 17/48 17/48 P E02D 15/06 E02D 15/06 // C04B 103: 30 C04B 103: 30 C09K 103: 00 C09K 103: 00 F Term (reference) 2D045 AA04 BA04 4G012 MB08 MB42 PB09 PB13 PB16 PB18 PB20 PB24 PC01 PC11 PE01 4G056 AA02 AA07 AA10 CB32 4H026 CA01 CB08 CC06

Claims (6)

[Claims] 1. From (a) at least two quaternary salt type cationic surfactants having at least one hydrocarbon group having 10 to 26 carbon atoms, and (b) an anionic aromatic compound and an inorganic bromine salt. A rheology modifier containing at least one selected. 2. A method for producing a slurry containing a rheology modifier, which comprises adding the rheology modifier according to claim 1 to a slurry containing powder. 3. The rheology modifier, wherein the total of the effective components of (a) and (b) is 0.0 at the effective component concentration in the aqueous phase of the slurry.
The method for producing a slurry according to claim 2, wherein the slurry is added so as to be 1 to 20% by weight. 4. A slurry containing a compound of one of (a) or (b) of the rheology modifier according to claim 1, powder and water, and then adding the compound (a) to the slurry.
Or the manufacturing method of the slurry which adds the other compound of (b). 5. A slurry containing the rheology modifier according to claim 1. 6. A hydraulic slurry containing the rheology modifier according to claim 1, a hydraulic powder, and water.