JP5335231B2 - One-component liquid rheology modifier - Google Patents

Description

  The present invention relates to a one-component liquid rheology modifier.

  In general, in order to control the rheological properties such as viscosity in a slurry of water and powder, the ratio of water and powder is adjusted, the dispersion state of particles is changed with a pH adjuster, or the water-absorbing polymer. A technique has been used, such as controlling the amount of surplus water by adding water, and a technique of adding a water-soluble polymer compound to a slurry system and utilizing a thickening action due to polymer entanglement.

Furthermore, when the slurry is produced, sufficient viscosity is obtained by short-time kneading, and further, the material separation resistance is stable, and the property or composition is stable even when the water powder ratio is high or in contact with the aqueous phase. There is a combination of the compound (A) and the compound (B) selected from (1) a cationic surfactant for the purpose of obtaining a slurry having no setting delay and excellent cured properties for a hydraulic powder. A combination of the compound (B) selected from the compound (A) and the anionic aromatic compound, (2) a combination of the compound (A) selected from the cationic surfactant and a compound (B) selected from the bromide compound, A slurry rheology modifier having a combination selected from the following has been developed (Patent Document 1).
JP 2003-313536 A

  However, these rheology modifiers are those in which two compounds are mixed in a slurry at the time of use to develop a rheological modification effect, and there is no mention of a liquid one-component form. From the viewpoint of workability such as measurement and addition operation, a rheology modifier having a liquid and one agent form is desirable. However, even if an aqueous solution containing the two compounds described in the above document is simply prepared, the viscosity is remarkably increased. It will not be easy to handle. Although it is conceivable to reduce the viscosity of such a thickened aqueous solution by using other components, no improvement in handling property has been found and no re-thickening at the time of use has been found.

  An object of the present invention is to improve a liquid one-component liquid rheology which is a liquid and one-agent type, which itself has a relatively low viscosity with good handleability and can exert a thickening effect when added to a slurry or the like. It is to provide a quality agent.

The present invention comprises a compound (A) selected from a cationic surfactant (hereinafter referred to as compound (A)) and a compound (B) selected from an anionic aromatic compound (hereinafter referred to as compound (B)). A one-component liquid rheology modifier containing,
The content of the compound (B) is 15 to 35% by weight in the one-component liquid rheology modifier,
The content of the compound (B ′) selected from p-toluenesulfonic acid, xylenesulfonic acid, salicylic acid, benzenesulfonic acid and salts thereof is 3% by weight or more in the one-component liquid rheology modifier,
The present invention relates to a one-component liquid rheology modifier.

  The present invention also relates to a slurry containing powder, water and the one-component liquid rheology modifier of the present invention.

  According to the present invention, a liquid one-component liquid rheology modifier is provided in the form of one agent, and workability such as measurement and addition operation is improved.

  The one-component liquid rheology modifier of the present invention has a low viscosity while being in the form of one solution. For example, when the rheology modifier is added to an aqueous solution, it is added to water or slurry. In addition, the viscosity of the mixture becomes high.

  The compound (A) and the compound (B) used in the one-component liquid rheology modifier of the present invention form an aggregate structure such as string-like micelles in the composition of the rheology modifier, and the structure The rheology modification effect is manifested by formation.

  The one-component liquid rheology modifier of the present invention contains the compound (A) and the compound (B) containing the compound (B ′).

  In the one-component liquid rheology modifier of the present invention, in the liquid modifier, the compound (B ′) preferentially forms an aggregate structure with the compound (A), and the compound (A) The concentration of the remaining compound (B) (which may include a part of the compound (B ′)) that was not involved in the formation of the aggregate is high, and is due to the association of the compound (A) and the compound (B ′). It is assumed that it contributes to the suppression of the increase in viscosity. As a result, the one-component liquid rheology modifier before dilution has a low viscosity. On the other hand, when this one-component liquid rheology modifier is added to an aqueous solvent or an aqueous slurry, the remaining compound (B) that was not effectively involved in the formation of an association with the compound (A) is: When diluted, the effect of suppressing the increase in viscosity is lost, and as a result, the viscosity due to the aggregate structure of the compounds (A) and (B ′) increases. As a result, high viscosity can be imparted to the solution or slurry. Due to such an action mechanism, the one-component liquid rheology modifier of the present invention itself has a viscosity that is easy to handle, and maintains the modification effect such as a thickening effect when added to a slurry or the like. The original idea that can be done.

  Although the reason why the one-pack type liquid rheology modifier of the present invention changes the state of viscosity development depending on the presence or absence of dilution with an aqueous solvent is unclear, it affects the distribution of water and aggregate structure of compound (B). It is thought that there is.

  It is preferable that the compound (A) and the compound (B) form an aggregate structure in the diluted aqueous solution, and the aggregate structure is preferably a string-like micelle. The presence of the aggregate structure can be confirmed by flow birefringence or dynamic viscoelasticity measurement using a polarizing plate.

  In Patent Document 1 and the like, it is said that string-like micelles or aggregates are formed. However, in the combination of an anionic compound and a cationic compound used in them, the handling property is improved and the increase in use is possible. No method has been found that can maintain a modification effect such as a sticky effect. In the present invention, by using the compound (B) containing a predetermined amount of the compound (B ′), the viscosity of the composition (aqueous solution or the like) itself containing the compounds (A) and (B) at a high concentration is reduced. Compatibility with the thickening effect when mixed with water or powder is possible.

  The combination of the compound (A) and the compound (B) may be any combination as long as it forms an aggregate structure such as string micelles, and the viscosity of the compound (A) having a viscosity of 100 mPa · s or less and the viscosity of the compound (B) is 100 mPa. When mixed with an aqueous solution of s or less, it is preferable that the viscosity of the aqueous solution is at least twice as high as that of any aqueous solution before mixing. More preferably, it can be at least 5 times, more preferably at least 10 times, even more preferably at least 100 times, and even more preferably at least 500 times higher. Here, the viscosity was measured with a B-type viscometer (C rotor [No. 3 rotor in the case of No. notation], 1.5 to 12 rpm) at 20 ° C. Say. In this case, the viscosity behavior is 1.5 r. p. m. To 12r. p. m. It may be expressed at any of the number of rotations. Moreover, mixing mixes each aqueous solution by the weight ratio of 50/50. Both the concentration of the aqueous solution of the compound (A) and the aqueous solution of the compound (B) are preferably 0.01 to 50% by weight.

  Here, the water-soluble low-molecular compound is a compound that does not cause phase separation with water in a state in which a structure such as a single molecule, an aggregate, a micelle, or a liquid crystal is formed in water or a mixture thereof at room temperature. It is. A phase has a macro size and is a region where statistical physical quantities such as temperature and pressure are clearly defined (colloid chemistry, volume 1, first edition, pages 89 to 90, October 12, 1995). Published by Tokyo Chemical Doujin). The water-soluble low molecular weight compound preferably has a solubility of 0.001 mg or more at 25 ° C. with respect to 100 g of water. Moreover, it is preferable to have a molecular weight of 2000 or less.

  A quaternary salt-type cationic surfactant is preferred as the compound (A) selected from the cationic surfactants, and the quaternary salt-type cationic surfactant has 10 to 26 in the structure. Those having at least one saturated or unsaturated linear or branched alkyl group containing a carbon atom are preferred. For example, alkyl (10 to 26 carbon atoms) trimethylammonium salt, alkyl (10 to 26 carbon atoms) pyridinium salt, alkyl (10 to 26 carbon atoms) imidazolinium salt, alkyl (10 to 26 carbon atoms) dimethylbenzylammonium salt Specifically, hexadecyltrimethylammonium chloride, hexadecyltrimethylammonium bromide, octadecyltrimethylammonium chloride, octadecyltrimethylammonium bromide, tallow trimethylammonium chloride, tallow trimethylammonium bromide, hydrogenated tallow trimethylammonium chloride, hydrogen Tallow trimethylammonium bromide, hexadecylethyldimethylammonium chloride, octadecylethyldimethyl Examples include ruammonium chloride, hexadecylpropyldimethylammonium chloride, hexadecylpyridinium chloride, 1,1-dimethyl-2-hexadecylimidazolinium chloride, hexadecyldimethylbenzylammonium chloride, and the like. Also good. Specifically, from the viewpoint of water solubility and thickening effect, hexadecyltrimethylammonium chloride, octadecyltrimethylammonium chloride, hexadecylpyridinium chloride and the like are preferable. Further, from the viewpoint of temperature stability of the thickening effect, it is preferable to use two or more types of cationic surfactants having different alkyl group carbon numbers as the compound (A).

  Further, when the one-component liquid rheology modifier of the present invention is applied to concrete or the like, a quaternary ammonium salt that does not contain halogen such as chlorine is used from the viewpoint of preventing corrosion of the reinforcing steel and deterioration of the concrete due to salt damage. preferable.

  Examples of quaternary salts containing no halogen such as chlorine include ammonium salts and imidazolinium salts. Specifically, hexadecyltrimethylammonium methosulfate, hexadecyldimethylethylammonium etosulphate, octadecyltrimethylammonium methosulfate, octadecyl. Dimethylethylammonium ethosulphate, tallow trimethylammonium methosulphate, tallow dimethylethylammonium ethosulphate, 1,1-dimethyl-2-hexadecylimidazolinium methosulphate, hexadecyldimethylhydroxyethylammonium acetate, octadecyldimethylhydroxyethylammonium acetate, Hexadecyldimethylhydroxyethylammonium propionate, oct Decyl dimethyl hydroxyethyl ammonium propionate, tallow dimethyl hydroxyethyl ammonium acetate, tallow dimethyl hydroxyethyl ammonium propionate, and the like. A quaternary ammonium salt containing no halogen such as chlorine can be obtained, for example, by quaternizing a tertiary amine with dimethyl sulfate or diethyl sulfate.

  Examples of the compound selected from the anionic aromatic compounds of the compound (B) include carboxylic acids having an aromatic ring and salts thereof, phosphonic acids having an aromatic ring and salts thereof, sulfonic acids having an aromatic ring and salts thereof. Specifically, salicylic acid, p-toluenesulfonic acid, sulfosalicylic acid, benzoic acid, m-sulfobenzoic acid, p-sulfobenzoic acid, 4-sulfophthalic acid, 5-sulfoisophthalic acid, p-phenolsulfonic acid, m-xylene -4-sulfonic acid, cumene sulfonic acid, methyl salicylic acid, styrene sulfonic acid, chlorobenzoic acid and the like, these may form a salt, and two or more of these may be used in combination. However, in the case of a polymer, the weight average molecular weight (for example, gel permeation chromatography method / polyethylene oxide conversion) is preferably less than 500.

  In the present invention, the content of the compound (B ′) selected from p-toluenesulfonic acid, xylenesulfonic acid, salicylic acid, benzenesulfonic acid and salts thereof is 3% by weight or more in the one-component liquid rheology modifier. , Preferably 5% by weight or more, more preferably 10% by weight or more. The compound (B) may consist only of the compound (B ′). A plurality of compounds (B ′) may be used. As the compound (B ′), p-toluenesulfonic acid and / or a salt thereof is preferable. In the total amount of compound (B), the proportion of compound (B ′) is preferably 20 to 100% by weight, more preferably 50 to 100% by weight.

  In the present invention, the compound (A) and the compound (B) that are likely to form an aggregate are low in viscosity even in a concentrated aqueous solution, respectively, and are effective as a one-component liquid rheology modifier in the aqueous phase. Even if the concentration is low, an excellent one-component liquid rheology modification effect is exhibited, which is preferable from the viewpoint of workability at the time of addition. In the present invention, thickening can be achieved with an extremely low addition amount having an effective component concentration of 10% by weight or less, and the same effect can be exhibited even in a slurry system with high ionic strength. Some systems exhibit rheological properties that cannot be obtained with the use of conventional thickeners, such that the material separation resistance when in contact with the aqueous phase is very stable. This is useful for slurries containing hydraulic powder.

  Further, a combination in which the compound (A) is an alkyl (C10-26) trimethylammonium salt and the compound (B) is a sulfonate having an aromatic ring is more preferable, and the effective component concentration in the aqueous phase of the slurry is The effect is exhibited even at 5 wt% or less. Among these, when used in a slurry of hydraulic powder, from the viewpoint of not causing a curing delay among these, as the compound (B), toluenesulfonic acid, xylenesulfonic acid, cumenesulfonic acid, styrenesulfonic acid, benzenesulfonic acid are used. Or these salts are preferable and p-toluenesulfonic acid and / or its salt are more preferable.

The one-pack type liquid rheology modifier of the present invention is preferably one in which rewinding is observed in the solution when stirring is stopped in the following standard test (I). The term “rewinding” as used herein means that the aggregates in the solution are entangled and have elastic properties, and the bubbles entrained in the solution move in the direction opposite to the rotation direction when stirring is stopped. Say. It is presumed that an association structure such as a string-like micelle is formed by the compound (A) and the compound (B) in the mixed solution of the potassium hydroxide aqueous solution and the one-component liquid rheology modifier due to the occurrence of rewinding. .
Standard test (I): To a 200 mL beaker, add 95 mL of 0.1N potassium hydroxide aqueous solution and 10 mL of one-component liquid rheology modifier, and stir for 180 seconds at 4 rpm with a 6 mm diameter glass rod.

  In the standard test (I), the glass rod with stirring is put to the bottom, and the rotation is performed along the wall surface. Visual observation is performed after the stirring is stopped, and if the movement of the bubble is observed in the direction opposite to the rotation direction, it is determined that the bubble has been unwound.

  In the one-component liquid rheology modifier according to the present invention, other components such as a dispersant, an AE agent, a retarder, an early strengthener, an accelerator, and a foaming agent are provided as long as the performance of the modifier is not impaired. , Foaming agents, antifoaming agents, rust inhibitors, colorants, antifungal agents, crack reducing agents, swelling agents, dyes, pigments and the like.

  The content of the compound (A) in the one-component liquid rheology modifier is preferably less than the concentration causing precipitation, and from the viewpoint of reducing the viscosity of the one-component liquid rheology modifier, the one-component type 9-30 weight% is preferable in a liquid rheology modifier, 10-20 weight% is more preferable, and 12-18 weight% is still more preferable.

  The content of the compound (B) in the one-component liquid rheology modifier is 15 to 35% by weight, and 16 to 30% by weight from the viewpoint of achieving both low viscosity of the product and thickening performance upon dilution. Preferably, 17 to 25% by weight is more preferable.

  In the one-component liquid rheology modifier of the present invention, the molar ratio (effective molar ratio) of the compound (A) to the compound (B) is obtained after satisfying the content of the compound (B). From the viewpoint of the viscosity to be obtained and the shape of the aggregate, it is preferable to use the compound (B) in excess with respect to the compound (A), and the compound (B) / compound (A) = 120/100 to 600/100, preferably 150/100 to 450/100, more preferably 200/100 to 300/100 is suitable.

  In the one-pack type liquid rheology modifier of the present invention, the molar ratio (effective molar ratio) of the compound (A) and the compound (B ′) is increased by the combination of the compound (A) and the compound (B ′). The region having a high effect is different and may be appropriately determined according to the target degree of thickening. From the viewpoint of the obtained viscosity and the shape of the aggregate, compound (A) / compound (B ′) = 1/200. 20/1, preferably 1/20 to 4/1, more preferably 1/3 to 2/1, and still more preferably 1/1 to 2/3.

  The one-component liquid rheology modifier of the present invention is liquid and is preferably an aqueous solution. From the viewpoint of being liquid, the content of water in the one-component liquid rheology modifier is preferably 50% by weight or more, more preferably 50 to 80% by weight, and still more preferably 60 to 70% by weight. . The total content of the compound (A) and the compound (B) is preferably 50% by weight or less, more preferably 50 to 20% by weight, and more preferably 40 to 25% by weight in the one-component liquid rheology modifier. % Is more preferable. From the viewpoint of making the amount added to the rheology modification target uniform, it is preferable that neither the compound (A) nor the compound (B) is precipitated in the one-component liquid rheology modifier.

  In addition, the viscosity of the one-component liquid rheology modifier of the present invention is preferably 10,000 mPa · s or less, more preferably 5000 mPa · s or less, more preferably 3000 mPa · s or less and 2000 mPa · s or less at 20 ° C. from the viewpoint of workability. More preferred.

  Furthermore, since the one-component liquid rheology modifier of the present invention can impart good rheological properties even in a slurry system with high ionic strength, the electric conductivity of the aqueous phase is in the range of 0.01 to 80 mS / cm, preferably It is preferable to use it for a slurry of 0.1 to 60 mS / cm, more preferably 1 to 40 mS / cm. Especially, it is preferable to apply to the slurry system with high electrical conductivity of the water phase containing hydraulic compositions, such as cement.

  According to the present invention, the slurry containing the one-component liquid rheology modifier of the present invention, in particular, the one-component liquid rheology modifier of the present invention, a hydraulic powder, and water. A slurry can be obtained.

  The one-component liquid rheology modifier of the present invention can be preferably applied to a slurry having a water powder ratio of 30 to 600%, more preferably a slurry having a water powder ratio of 30 to 300%. As the powder for producing this slurry, a hydraulic powder having physical properties that are cured by a hydration reaction can be used. For example, cement and gypsum are mentioned. A filler can also be used, and examples thereof include calcium carbonate, fly ash, blast furnace slag, silica fume, bentonite, and clay (natural minerals mainly containing hydrous aluminum silicate: kaolinite, halosite, and the like). These powders may be used alone or in combination. Furthermore, sand, gravel, and a mixture thereof may be added as aggregate to these powders as necessary. Moreover, it can also apply to the slurry and soil of inorganic powders other than the above, such as titanium oxide.

  Further, in the one-component liquid rheology modifier of the present invention, the effective component concentration in the slurry may be appropriately determined according to the intended degree of thickening, but the one-component liquid rheology modifier of the present invention. A slurry containing the one-component liquid slurry modifier of the present invention can be obtained by a method such as adding an agent to a slurry prepared in advance or adding it during slurry production. The total effective amount of the compound (A) and the compound (B) is 0.01 to 20% by weight, further 0.1 to 15% by weight, and further 0.1 to 10% by effective concentration in the aqueous phase of the slurry. It is preferable to use it so that it may become 0.3 weight% further by weight%.

  From the viewpoint of the rheology modification effect, the viscosity of the slurry containing the one-component liquid rheology modifier of the present invention, in particular, the hydraulic slurry containing the hydraulic powder is preferably 1000 mPa · s or more at 20 ° C. 2000 mPa · s or more is more preferable.

  The hydraulic slurry containing the one-component liquid rheology modifier of the present invention may contain a dispersant. Dispersants include lignin sulfonate and its derivatives as water reducing agents, oxycarboxylates, polyol derivatives, high-performance water reducing agents and high-performance AE water reducing agents such as naphthalene (manufactured by Kao Corporation: Mighty 150), melamine (Kao Co., Ltd .: Mighty 150V-2), polycarboxylic acid type (Kao Co., Ltd .: Mighty 3000, NMB Co., Ltd .: Leo Build SP, Nippon Shokubai Co., Ltd .: Aqualock FC600, Aqualock FC900), anion interface Examples of the activator include polycarboxylic acid type surfactants (manufactured by Kao Corporation: Poise Series). Among them, the polycarboxylic acid-based high-performance water reducing agent and the polycarboxylic acid type surfactant are preferable in the sense that both the fluidity and viscosity of the slurry can be achieved.

  The content of the dispersant in the hydraulic slurry containing the one-component liquid rheology modifier of the present invention is generally 0.01 to 5% by weight, more preferably 0.05 to 3% as an active ingredient with respect to the hydraulic powder. % By weight is preferred.

  In the one-component liquid rheology modifier of the present invention, other existing water-soluble polymers can be used in addition to the compound (A) and the compound (B) according to the present invention from the viewpoint of viscosity adjustment. Examples of other existing water-soluble polymers include cellulose derivatives, polyacrylic polymers, polyethylene glycol, polyvinyl alcohol, gum polysaccharides, microbial fermentation polysaccharides, xanthan gum, cationic polymers, and the like. Is preferred.

As the cationic polymer, those containing cationic nitrogen are preferable, and polyoxygen containing an alkyl group having 1 to 22 carbon atoms and an oxyalkylene group having 2 to 8 carbon atoms in the cationic nitrogen of the cationic polymer. Those having a group selected from an alkylene group, a hydrogen atom and an acryloyloxyalkyl group are preferable. Specific examples of the cationic polymer include polyallyltrialkylammonium salts such as polyallyltrimethylammonium salt, poly (diallyldimethylammonium salt), poly (methacryloyloxyethyldimethylethylammonium salt), polymethacrylamideamidopropyltrimethylammonium salt, Examples thereof include cationized starch, cationized cellulose, and cationized hydroxyethyl cellulose. Among these, poly (diallyldimethylammonium salt), polymethacryloyloxyethyldimethylethylammonium salt, polymethacrylamidopropyltrimethylammonium salt, methacryloyloxyethyldimethylethylammonium salt-vinylpyrrolidone copolymer, and methacrylamidepropyltrimethylammonium salt -Cationic polymers selected from vinylpyrrolidone copolymers are preferred. In addition, from the viewpoint of the rheology modification effect, those in which the counter ion is an alkyl sulfate ion, particularly ethyl sulfate and methyl sulfate are more preferable. The molecular weight of the cationic polymer is preferably 1000 or more, and more preferably 1000 to 3 million. This molecular weight is a weight average molecular weight measured under the following conditions by gel permeation chromatography.
Column: α-M (manufactured by Tosoh Corp.) 2 linked Eluent: 0.15 mol / L Na sulfate 1% acetic acid aqueous solution Flow rate: 1.0 mL / min
Temperature: 40 ° C
Detector: RI
Pullulan is used as molecular weight standard

  The content of the cationic polymer is preferably 0.1 to 30% by weight, more preferably 1 to 20% by weight in the one-component liquid rheology modifier of the present invention. The weight ratio of the cationic surfactant to the cationic polymer is preferably cationic polymer / cationic surfactant = 1/100 to 200/100, more preferably 5/100 to 130/100.

  The hydraulic slurry containing the one-component liquid rheology modifier of the present invention has other components such as an AE agent, a retarder, an early strengthening agent, an accelerator, a foaming agent, as long as the performance of the agent is not impaired. It may contain a foaming agent, an antifoaming agent, a crack reducing agent, an expanding agent and the like.

  A cured composition obtained by curing a slurry containing the one-component liquid rheology modifier and hydraulic powder of the present invention is excellent in initial cured physical properties as compared with the case of using a water-soluble polymer. Furthermore, a hydraulic composition can be prepared by mixing aggregate with a hydraulic slurry containing the one-component liquid rheology modifier of the present invention. A cured composition obtained by curing this hydraulic composition is excellent in initial cured physical properties as compared with the case of using a water-soluble polymer, and is suitably used for a structure or the like.

  The aggregate mixed with the hydraulic slurry containing the one-component liquid rheology modifier of the present invention can be a fine aggregate or a coarse aggregate, and is not limited, but has a low water absorption rate and is not limited. A thing with high intensity | strength is preferable. Coarse aggregates include rivers, land, mountains, sea, lime gravel, crushed stones, blast furnace slag coarse aggregate, ferronickel slag coarse aggregate, lightweight coarse aggregate (artificial and natural) and recycled coarse aggregate Can be mentioned. Fine aggregates include rivers, land, mountains, sea, lime sand, quartz sand and crushed sand, blast furnace slag fine aggregates, ferronickel slag fine aggregates, lightweight fine aggregates (artificial and natural) and recycled fine aggregates. Etc.

  The slurry containing the one-component liquid rheology modifier of the present invention can contain hydraulic powder, and the slurry containing the one-component liquid rheology modifier can hydrate the hydraulic powder. It cures without hindering the reaction. From this point, it can be suitably used for civil engineering and architectural applications.

<Example 1>
(1) Preparation of 1-component liquid rheology modifier and measurement of viscosity and reversal A liquid 1-component liquid rheology modifier was prepared with the composition shown in Table 1. The temperature was adjusted to 20 ° C. in a constant temperature water bath, and the viscosity was measured with a B-type viscometer (No. 3 rotor, 12 rpm). Moreover, the rewinding was observed by the method of the standard test (I). The results are shown in Table 2.

  The viscosity at 20 ° C. of a 0.8% by weight aqueous solution of sodium p-toluenesulfonate (B-type viscometer (No. 3 rotor, 12 rpm)) is 100 mPa · s or less, hexadecyltrimethylammonium chloride / octadecyltrimethyl The viscosity at 20 ° C. of a 1.3 wt% aqueous solution of an ammonium chloride mixture (weight ratio 1/1) was 100 mPa · s or less. When these aqueous solutions were mixed at a weight ratio of 50/50, the viscosity of the aqueous solution was 1100 mPa · s.

(2) Rheological modification evaluation of hydraulic slurry After mixing 400 g of ordinary Portland cement and 376 g of water with a hand mixer for cake for 30 seconds, 24 g of the one-component liquid rheology modifier shown in Table 1 was added and further mixed for 60 seconds. The viscosity of the prepared slurry was measured with a bisco tester (VT-04E manufactured by Rion). The temperature of the material was adjusted so that the slurry temperature was 20 ° C. The results are shown in Table 2.

*: These are also compounds (B ′).
**: No. For 1-17, the amount of sodium p-toluenesulfonate in Table 1 was 5.0% by weight.

Claims (4)

One-component liquid rheology modification for a slurry having a water powder ratio of 30 to 600%, comprising a compound (A) selected from a cationic surfactant and a compound (B) selected from an anionic aromatic compound An agent,
The content of the compound (B) is 15 to 35% by weight in the one-component liquid rheology modifier,
The content of the compound (B ′) selected from p-toluenesulfonic acid, xylenesulfonic acid, salicylic acid, benzenesulfonic acid and salts thereof is 3% by weight or more in the one-component liquid rheology modifier,
One-component liquid rheology modifier. The one-component liquid rheology modifier according to claim 1, wherein in the following standard test (I), the bubbles are observed to rewind when the stirring is stopped.
Standard test (I): To a 200 mL beaker, add 95 mL of 0.1N potassium hydroxide aqueous solution and 10 mL of one-component liquid rheology modifier, and stir for 180 seconds at 4 rpm with a 6 mm diameter glass rod. A slurry containing powder, water, and the one-component liquid rheology modifier according to claim 1 or 2 , wherein the water powder ratio is 30 to 600% . The slurry according to claim 3, wherein the powder is a hydraulic powder.