JP2018043920A - Viscosity reducing agent for composite dispersant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a viscosity reducing agent for composite dispersant, which can reduce thickening when a naphthalene-based dispersant and a polycarboxylic acid-based dispersant are used in combination.SOLUTION: Provided is a viscosity reducing agent for composite dispersant, used for composite dispersant comprising (A) a naphthalene-based dispersant and (B) a carboxylic acid-based dispersant or a phosphoric acid-based dispersant, comprising at least one or more compounds (except naphthalene-based dispersants, carboxylic acid-based dispersants, and phosphoric acid-based dispersants) which satisfy at least one of the following conditions 1 to 3 and at least one of the following conditions 4 and 5. Condition 1: has a hydrocarbon group (except aromatic hydrocarbon groups) having 10 or more carbon atoms. Condition 2: has an aromatic ring. Condition 3: has at least one of a propyleneoxy group and a butyleneoxy group. Condition 4: has an ethyleneoxy group. Condition 5: has a sulfuric ester group.SELECTED DRAWING: None

Description

  The present invention relates to a thickener for a composite dispersant and a method for reducing the viscosity of a dispersant mixture.

  Dispersant for hydraulic composition is a chemical admixture used to reduce the unit water amount required to obtain the required slump by dispersing cement particles and to improve the workability of the hydraulic composition. It is. Conventionally, as the dispersant, a naphthalene-based dispersant such as naphthalenesulfonic acid formaldehyde condensate, a polycarboxylic acid-based dispersant such as a copolymer of carboxylic acid and a monomer having an alkylene glycol chain, melamine sulfonic acid formaldehyde condensation Melamine-based dispersants such as products are known.

Naphthalene-based dispersants, compared to polycarboxylic acid-based dispersants, have less variation in the effect of fluidity with respect to changes in materials and temperatures, and the resulting hydraulic composition has a relatively low viscosity, resulting in a hydraulic composition It is easy to use when manufacturing products.
On the other hand, the polycarboxylic acid-based dispersant has a feature that it can exhibit good dispersibility even for a hydraulic composition having a relatively low water / cement ratio as compared with a naphthalene-based dispersant.

If a naphthalene-based dispersant and a polycarboxylic acid-based dispersant are used in combination, it is considered that the temperature-dependent problem can be solved while exhibiting good dispersibility for a hydraulic composition having a relatively low water / cement ratio. However, as described in Patent Documents 1 and 2, when a naphthalene-based dispersant and a polycarboxylic acid-based dispersant are used in combination, the fluidity of the hydraulic composition is lowered, and the level is such that it can withstand practical use. A dispersant could not be obtained. This is because the π-electron of the aromatic ring (naphthalene ring) of the naphthalene-based dispersant interacts with the alkylene oxide chain responsible for the steric repulsion of the polycarboxylic acid-based dispersant. This is thought to be because the properties and fluidity cannot be exhibited.
Naphthalene-based dispersants and polycarboxylic acid-based dispersants are generally used in the form of aqueous solutions or aqueous dispersions. When naphthalene-based dispersants and polycarboxylic acid-based dispersants are mixed in water, the mixture is It may become extremely thick and difficult to pump.

Patent Document 1 discloses a water reducing agent for cement containing a polycarboxylic acid compound having 3 or more carboxyl groups per molecule, a naphthalenesulfonic acid-based water reducing agent, and a soluble acid calcium salt having a solubility in water of 5 (25 ° C.) or more. Disclose.
Patent Document 2 discloses a polycarboxylic acid compound having three or more carboxyl groups per molecule, an acid alkali metal salt whose calcium salt is soluble in water, and a hydraulic composition containing cement, which is kneaded with water. A method for adding a water reducing agent for cement, in which an acid water reducing agent is added, is disclosed.

JP 2006-169078 A JP 2006-168305 A

  The present invention provides a thickener for composite dispersants that can suppress thickening when a naphthalene dispersant and a polycarboxylic acid dispersant are used in combination.

The present invention comprises a compound (excluding a naphthalene dispersant, a carboxylic dispersant, and a phosphate dispersant) that satisfies at least one of the following conditions 1 to 3 and at least one of the following conditions 4 to 5. The present invention relates to a thickener for a composite dispersant used for a composite dispersant of A) a naphthalene dispersant and (B) a carboxylic acid dispersant or a phosphate dispersant.
Condition 1: A hydrocarbon group having 10 or more carbon atoms (excluding an aromatic hydrocarbon group).
Condition 2: It has an aromatic ring.
Condition 3: It has at least one of a propyleneoxy group and a butyleneoxy group.
Condition 4: It has an ethyleneoxy group.
Condition 5: having a sulfate group.

Further, the present invention relates to a viscosity of a dispersant mixture containing (A) a naphthalene-based dispersant, (B) a carboxylic acid-based dispersant or a phosphoric acid-based dispersant, and water, and at least one of the following conditions 1 to 3: The present invention relates to a method for reducing the viscosity of a dispersant mixture, in which a compound satisfying at least one of the following conditions 4 to 5 (excluding a naphthalene-based dispersant, a carboxylic acid-based dispersant, and a phosphoric acid-based dispersant) is added and lowered.
Condition 1: A hydrocarbon group having 10 or more carbon atoms (excluding an aromatic hydrocarbon group).
Condition 2: It has an aromatic ring.
Condition 3: It has at least one of a propyleneoxy group and a butyleneoxy group.
Condition 4: It has an ethyleneoxy group.
Condition 5: having a sulfate group.

  Hereinafter, (A) a naphthalene dispersant as the component (A), (B) a carboxylic acid dispersant or a phosphate dispersant as the component (B), and at least one of the above conditions 1 to 3 One or more compounds selected from compounds satisfying at least one of the above conditions 4 to 5 (excluding naphthalene-based dispersants, carboxylic acid-based dispersants, and phosphoric acid-based dispersants) will be described as component (C). .

  ADVANTAGE OF THE INVENTION According to this invention, the viscosity reducing agent for composite dispersing agents which can suppress the viscosity increase when a naphthalene type dispersing agent and a polycarboxylic acid type dispersing agent are used together is provided. Thereby, a naphthalene type dispersing agent and a polycarboxylic acid type dispersing agent can be formulated as a one-component composite dispersing agent. And even if it is a 1 agent type form, since the dispersibility of each of a naphthalene type dispersing agent and a polycarboxylic acid type dispersing agent is not impaired, it can anticipate improving the dispersibility of a cement and an inorganic powder.

<Thickener for composite dispersant>
When a naphthalene dispersant and a polycarboxylic acid dispersant are used in combination, the viscosity increases and the dispersibility decreases. This is because the naphthalene ring of the naphthalene-based dispersant and the polyalkyleneoxy group (AO chain) of the polycarboxylic acid-based dispersant are associated with each other, so that the dispersant is apparently increased in molecular weight and thickened. It is thought that the adsorption is inhibited and the dispersibility is lowered. Further, when the component (C) is used in combination, it is considered that the association between the naphthalene ring and the AO chain is eliminated or weakened by the interaction of the component (C) with the naphthalene ring, and the thickening is suppressed.

  The composite dispersant referred to in the present invention means a dispersant using a combination of the component (A) and the component (B), and the component (A) and the component (B) form a composite. It doesn't matter whether or not Further, the composite dispersant may be in a state where the component (A) and the component (B) are separated. The mixture of the component (A) and the component (B) is a composite dispersant.

  Hereinafter, high fluidity (flow) is considered to be good dispersibility.

<(A) component>
Examples of the component (A) include polymer compounds having a monomer unit containing a naphthalene ring. The component (A) can be used as a dispersant for a hydraulic composition containing hydraulic powder such as cement and gypsum.

  As the component (A), naphthalenesulfonic acid formaldehyde condensate or a salt thereof is preferably used. The naphthalenesulfonic acid formaldehyde condensate or a salt thereof is a condensate of naphthalenesulfonic acid and formaldehyde or a salt thereof. The naphthalene sulfonic acid formaldehyde condensate may be used as a monomer, for example, methyl naphthalene, ethyl naphthalene, butyl naphthalene, hydroxy naphthalene, naphthalene carboxylic acid, anthracene, phenol, cresol, creosote oil, tar, melamine, as long as the performance is not impaired. It may be co-condensed with an aromatic compound capable of co-condensing with naphthalenesulfonic acid, such as urea, sulfanilic acid and / or derivatives thereof.

  Naphthalene sulfonic acid formaldehyde condensate or salt thereof may be, for example, Mighty 150, Demol N, Demol RN, Demol MS, Demol SN-B, Demol SS-L (all manufactured by Kao Corporation), Cellflow 120, Labelin FD-40. , Labelin FM-45 (all manufactured by Daiichi Kogyo Co., Ltd.) and the like can be used.

  The naphthalenesulfonic acid formaldehyde condensate or salt thereof has a weight average molecular weight of preferably 200,000 or less, more preferably 100,000 or less, and still more preferably 80,000 or less, from the viewpoint of improving the fluidity of the hydraulic composition. More preferably, it is 50,000 or less, More preferably, it is 30,000 or less. The naphthalenesulfonic acid formaldehyde condensate or salt thereof has a weight average molecular weight of preferably 1,000 or more, more preferably 3,000 or more, and still more preferably 4, from the viewpoint of improving the fluidity of the hydraulic composition. 000 or more, more preferably 5,000 or more. The naphthalene sulfonic acid formaldehyde condensate may be in the acid state or neutralized.

The molecular weight of the naphthalenesulfonic acid formaldehyde condensate or a salt thereof can be measured using gel permeation chromatography under the following conditions.
[GPC conditions]
Column: G4000SWXL + G2000SWXL (Tosoh)
Eluent: 30 mM CH ₃ COONa / CH ₃ CN = 6/4
Flow rate: 0.7ml / min
Detection: UV280nm
Sample size: 0.2 mg / ml
Standard substance: manufactured by Nishio Kogyo Co., Ltd. Polystyrene sulfonate sodium equivalent (monodispersed sodium polystyrene sulfonate: molecular weight, 206, 1,800, 4,000, 8,000, 18,000, 35,000, 88,000, 780,000)
Detector: Tosoh Corporation UV-8020

  Examples of the method for producing a naphthalenesulfonic acid formaldehyde condensate or a salt thereof include a method of obtaining a condensate by a condensation reaction of naphthalenesulfonic acid and formaldehyde. You may neutralize the said condensate. Moreover, you may remove the water insoluble matter byproduced by neutralization. Specifically, in order to obtain naphthalenesulfonic acid, 1.2 to 1.4 mol of sulfuric acid is used with respect to 1 mol of naphthalene and reacted at 150 to 165 ° C. for 2 to 5 hours to obtain a sulfonated product. Next, formalin is added dropwise at 85 to 105 ° C. over 3 to 6 hours to form 0.93 to 0.99 mol as formaldehyde with respect to 1 mol of the sulfonated product, and condensed at 95 to 105 ° C. after the addition. Perform the reaction. Furthermore, since the aqueous solution of the obtained condensate has high acidity, water and a neutralizing agent are added to the obtained condensate from the viewpoint of suppressing metal corrosion in storage tanks, and a neutralization step is performed at 80 to 95 ° C. be able to. The neutralizing agent is preferably added in an amount of 1.0 to 1.1 moles per each of naphthalenesulfonic acid and unreacted sulfuric acid. Moreover, the water-insoluble matter which arises by neutralization can be removed, and preferably the separation by filtration is mentioned as the method. By these steps, an aqueous solution of a naphthalenesulfonic acid formaldehyde condensate water-soluble salt is obtained. This aqueous solution can be used as it is as the aqueous solution of the component (A). Further, if necessary, the aqueous solution can be dried and powdered to obtain a powdery salt of naphthalenesulfonic acid formaldehyde condensate, which can be used as the powdery component (A). Drying and powdering can be performed by spray drying, drum drying, freeze drying, or the like.

<(B) component>
The component (B) is a carboxylic acid dispersant or a phosphoric acid dispersant.
As the component (B), a monomer unit having a group selected from a carboxylic acid group, a phosphoric acid group, a group that changes to a carboxylic acid group by hydrolysis, and a group that changes to a phosphoric acid group by hydrolysis, and an alkyleneoxy group A polymer having a weight average molecular weight of 5,000 or more and 1,000,000 or less (hereinafter referred to as “component (B1)”) is preferable.
The polymer is a compound obtained by addition polymerization or condensation polymerization. Examples of the addition polymerization include radical polymerization and ionic polymerization, which are techniques for reacting a monomer having an unsaturated bond. Examples of the condensation polymerization include addition condensation with aldehydes such as formaldehyde condensation of aromatic compounds.

The carboxylic acid group of the component (B1) is a group represented by —COOM ⁰ (M ⁰ represents a counter ion). The carboxylic acid group is a group selected from a carboxy group and a carboxy group that is a salt.

Further, examples of the group that changes to a carboxylic acid group by hydrolysis of the component (B1) include a carboxylic acid ester group. The carboxylic acid ester group has an ester structure of —COOR (R represents a hydrocarbon group, preferably an alkyl group having 1 to 12 carbon atoms or a hydroxyalkyl group), and is a carboxyl group generated by hydrolysis. The acid group remains in the structure of the component (B1). A group that changes to a carboxylic acid group by hydrolysis, such as a carboxylic acid ester group, is a group having a precursor structure of a carboxylic acid group. By polymerizing a monomer having a carboxylic acid ester group, the carboxylic acid ester group can be introduced into the polymer of the component (B1).
A group that changes to a carboxylic acid group by hydrolysis is preferred from the viewpoint of initial strength. Moreover, the group which changes to a carboxylic acid group by hydrolysis is preferable from the viewpoint of fluidity retention.

The phosphoric acid group of the component (B1) is a group represented by —OPO (OM ¹ ) (OM ² ) (M ¹ and M ² are the same or different and each represents a counter ion). . The phosphate group is a group selected from a phosphate group and a phosphate group that is a salt.
Here, examples of M ⁰ , M ¹ , and M ² include a hydrogen ion, an alkali metal ion, an alkaline earth metal ion (1/2 atom), an ammonium ion, and an amine.

  Moreover, a phosphate ester group is mentioned as group which changes to a phosphate group by hydrolysis of (B1) component. The phosphate ester group has a structure represented by the following formula.

(In the formula, each of R ^a and R ^b represents a hydrocarbon group, preferably an alkyl group having 1 to 12 carbon atoms or a hydroxyalkyl group.)
In the phosphate ester group, the phosphate group generated by hydrolysis remains in the structure of the component (B1). A group that changes to a phosphate group by hydrolysis, such as a phosphate group, is a group having a precursor structure of a phosphate group. By polymerizing a monomer having a phosphate ester group, a phosphate ester group can be introduced into the polymer of the component (B).
A group that changes to a phosphate group by hydrolysis is preferred from the viewpoint of initial strength. Moreover, the group which changes to a phosphate group by hydrolysis is preferable from the viewpoint of fluidity retention.

  The component (B1) has a weight average molecular weight of 5, having a monomer unit having a group selected from a carboxylic acid group, a phosphoric acid group, a carboxylic acid ester group, and a phosphoric acid ester group, and a monomer unit having an alkyleneoxy group. The polymer may be from 000 to 1,000,000.

  Examples of the alkyleneoxy group of the component (B1) include an ethyleneoxy group and a propyleneoxy group. These are preferably those obtained by addition polymerization of 2 mol or more of an alkyleneoxy group such as a polyethyleneoxy group or a polypropyleneoxy group.

  The component (B), further the component (B1), is a polymer selected from a polymer containing a monomer unit having a carboxylic acid group, and a polymer containing a monomer unit having a carboxylic acid group and a monomer unit having a phosphate group. Is preferred.

  As the component (B) and further the component (B1), for example, addition polymerization of a phosphoric acid group having an unsaturated bond and / or a carboxylic acid compound and a compound having a monomer unit having an alkyleneoxy group having an unsaturated bond And a condensate of formaldehyde with a compound having a monomer unit having a group selected from a carboxylic acid group and a phosphoric acid group and a monomer unit having an alkyleneoxy group.

  The weight average molecular weight of the component (B1) is 5,000 or more and 1,000,000 or less, and from the viewpoint of improving the fluidity of the hydraulic composition, the weight average molecular weight is preferably 10,000 or more, more preferably 30. , 000 or more, preferably 500,000 or less, more preferably 150,000 or less, and still more preferably 100,000 or less.

For example, as the component (B) and the component (B1),
(1) From alkoxy polyalkylene glycol mono (meth) acrylate, (meth) acrylic acid, (meth) acrylic acid ester having 1 to 3 carbon atoms which may have a hydroxyl group, and phosphate ester having an unsaturated group A copolymer obtained by copolymerizing at least one selected from the group;
(2) a copolymer obtained by copolymerizing an ether compound of a polyalkylene glycol and an unsaturated alcohol, and one or more selected from dicarboxylic acid and dicarboxylic anhydride,
Is mentioned. Here, (meth) acrylate means acrylate or methacrylate, and (meth) acrylic acid means acrylic acid or methacrylic acid.

  Regarding the component (B1), the monomer unit having a carboxylic acid group is derived from one or more monomers selected from a monocarboxylic acid having an addition-polymerizable unsaturated bond and a dicarboxylic acid having an addition-polymerizable unsaturated bond. Monomer units to be used. Examples include monomer units derived from one or more monomers selected from acrylic acid, methacrylic acid, crotonic acid, maleic acid, fumaric acid, itaconic acid, and citraconic acid, and 1 selected from methacrylic acid and acrylic acid Monomer units derived from more than one monomer are preferred. The monomer unit may be an anhydride compound such as maleic anhydride or a half ester such as maleic acid monoester.

  Regarding the component (B1), examples of the monomer unit having a group that changes to a carboxylic acid group by hydrolysis include a monomer unit derived from a monomer having a carboxylic acid ester group. For example, a monomer unit derived from one or more monomers selected from 2-hydroxyethyl acrylate, methyl acrylate, and ethyl acrylate is preferable, and a monomer unit derived from 2-hydroxyethyl acrylate is more preferable.

  Regarding the component (B1), the monomer unit having a group selected from a phosphate group is selected from a phosphate compound having an unsaturated bond capable of addition polymerization and a phosphate compound having an aromatic functional group capable of condensation polymerization. Examples include monomer units derived from more than one type of monomer. For example, phosphoric acid di-[(2-hydroxyethyl) methacrylic acid] ester, phosphoric acid di-[(2-hydroxyethyl) acrylic acid] ester, phosphoric acid mono (2-hydroxyethyl) methacrylic acid ester, phosphoric acid mono And a monomer unit derived from one or more monomers selected from (2-hydroxyethyl) acrylic acid ester, polyalkylene glycol mono (meth) acrylate acid phosphoric acid ester, and phenoxyethanol phosphate. Monomer units derived from one or more monomers selected from (2-hydroxyethyl) methacrylic acid] ester, mono (2-hydroxyethyl) methacrylic acid phosphate, and phenoxyethanol phosphate are preferred. In addition, any one or more of alkali metal salts, alkaline earth metal salts, ammonium salts, and amine salts may be used.

  Regarding the component (B1), examples of the monomer unit having a group that changes to a phosphate group by hydrolysis include a monomer unit derived from a monomer having a phosphate ester group. For example, a monomer unit derived from one or more monomers selected from dimethyl monohydroxyethyl methacrylate phosphate, diethyl monohydroxyethyl methacrylate phosphate, and dihydroxyethyl monohydroxyethyl methacrylate phosphate is preferred, and dihydroxyethyl monohydroxyethyl is preferred. Monomer units derived from methacrylate phosphates are more preferred.

  Regarding the component (B1), the monomer unit having an alkyleneoxy group includes a monomer unit derived from a compound having an unsaturated bond capable of addition polymerization and an alkyleneoxy group. Examples thereof include monomer units derived from one or more monomers selected from alkoxy polyalkylene glycol mono (meth) acrylates and ether compounds of polyalkylene glycols and unsaturated alcohols. Specific examples of the monomer unit having an alkyleneoxy group include methoxypolyethylene glycol, methoxypolyethylenepolypropylene glycol, ethoxypolyethyleneglycol, ethoxypolyethylenepolypropyleneglycol, propoxypolyethyleneglycol, and propoxypolyethylenepolypropyleneglycol. Esterified product of styrene and acrylic acid or methacrylic acid, allyl alcohol ethylene oxide and / or propylene oxide adduct, isoprenol ethylene oxide and / or propylene oxide adduct, vinyl alcohol ethylene oxide and / or propylene oxide adduct, acrylic Acid ethylene oxide and / or propylene oxide adducts As well as a monomer unit derived from a monomer selected from adducts of ethylene oxide and / or propylene oxide methacrylate.

  The monomer unit having an alkyleneoxy group as the component (B1) is preferably 5 or more, more preferably 7 or more, still more preferably the average number of added moles of alkyleneoxy groups per monomer unit from the viewpoint of improving dispersibility. It is 10 or more, more preferably 20 or more, and preferably 150 or less, more preferably 130 or less.

  Moreover, as a monomer unit which has an alkyleneoxy group, the monomer unit derived from the monomer represented by the following general formula (B1) is preferable.

[Wherein, R ^1b represents a hydrogen atom or a methyl group. AO is an alkyleneoxy group having 2 or 3 carbon atoms, and n is the average number of added moles of AO, and represents a number of 5 or more and 150 or less. Z represents an ether group (—O—) or an ester group (—COO—). R ^2b represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms. ]

Specific examples of the component (B) and the component (B1) are shown below.
(B1) Polymer containing methacrylic acid and methoxypolyethyleneglycol monomethacrylate as constituent monomers From the viewpoint of improving dispersibility, the polymer may contain 40 to 90 mol% of methacrylic acid in the constituent monomers. preferable. Moreover, it is preferable that this polymer is 10 mol% or more and 60 mol% or less of methoxypolyethyleneglycol monomethacrylate in a structural monomer from a viewpoint of a dispersibility improvement. In addition, the weight average molecular weight of the polymer is preferably 10,000 or more and 100,000 or less from the viewpoint of improving dispersibility. Here, the weight average molecular weight can be measured by gel permeation chromatography (standard substance: monodispersed polyethylene glycol having a known molecular weight).
(B2) Formaldehyde polycondensate containing polyoxyethylene monophenyl ether and phenoxyethanol phosphate as constituent monomers From the viewpoint of improving dispersibility, the polymer is composed of 10 mol% or more of polyoxyethylene monophenyl ether in the constituent monomers. It is preferable that it is below mol%. Moreover, it is preferable that this polymer is 30 mol% or more and 90 mol% or less of phenoxyethanol phosphate in a structural monomer from a viewpoint of a dispersibility improvement. Moreover, it is preferable that the weight average molecular weight of this polymer is 5,000 or more and 100,000 or less from a viewpoint of a dispersibility improvement. Here, the weight average molecular weight can be measured by gel permeation chromatography (standard substance: monodispersed polyethylene glycol having a known molecular weight).
(B3) Polymer containing methacrylic acid and 2-hydroxyethyl acrylate as constituent monomers From the viewpoint of improving dispersibility, the polymer may contain 45 to 95 mol% of methacrylic acid in the constituent monomers. preferable. Moreover, it is preferable that 2-hydroxyethyl acrylate is 5 mol% or more and 55 mol% or less in a structural monomer from the viewpoint of an improvement in dispersibility. Moreover, it is preferable that the weight average molecular weight of this polymer is 5,000 or more and 100,000 or less from a viewpoint of a dispersibility improvement. Here, the weight average molecular weight can be measured by gel permeation chromatography (standard substance: monodispersed polyethylene glycol having a known molecular weight).

In the component (B1), from the viewpoint of fluidity, the b-1 / b-2 molar ratio is preferably 50/50 or more, more preferably 70/30 or more, and preferably 85/15 or less.
Here, b-1 is (meth) acrylic acid, and b-2 is an alkoxy polyalkylene glycol mono (meth) acrylate or an ether compound of polyalkylene glycol and an unsaturated alcohol.

<(C) component>
The component (C) is a compound (excluding a naphthalene dispersant, a carboxylic dispersant, and a phosphate dispersant) that satisfies at least one of the following conditions 1 to 3 and at least one of the following conditions 4 to 5. .
Condition 1: A hydrocarbon group having 10 or more carbon atoms (excluding an aromatic hydrocarbon group).
Condition 2: It has an aromatic ring.
Condition 3: It has at least one of a propyleneoxy group and a butyleneoxy group.
Condition 4: It has an ethyleneoxy group.
Condition 5: having a sulfate group.

  When the compound of component (C) is a nonionic compound, the HLB (Davis method) of the compound is preferably 0 or more, more preferably 1 or more, further preferably 3 or more, and still more preferably 5 or more. And, 150 or less is preferable, 100 or less is more preferable, 80 or less is still more preferable, and 60 or less is still more preferable. The HLB of component (C) can be calculated from the structure.

Component (C) can be selected from organic compounds.
Component (C) can be selected from surfactants. The component (C) can be selected from an anionic surfactant, a nonionic surfactant, a cationic surfactant, and an amphoteric surfactant.

By satisfying Condition 1, the hydrocarbon group of the compound and the naphthalene ring of the naphthalene-based dispersant that is the component (A) can preferentially cause a hydrophobic interaction and suppress thickening. It is guessed.
Condition 1 is a hydrocarbon group having 10 or more carbon atoms, preferably 12 or more, and preferably 22 or less, more preferably 20 or less, from the viewpoint of hydrophobic interaction with the naphthalene ring. Group hydrocarbon group). Note that an aromatic hydrocarbon group such as a phenyl group or a naphthyl group does not fall under the condition 1 hydrocarbon group. A compound having a group in which a hydrocarbon group having 10 or more carbon atoms is bonded to an aromatic hydrocarbon group, for example, an aryl group substituted with an alkyl having 10 or more carbon atoms, satisfies the conditions 1 and 2. . A group having an aromatic ring bonded to a hydrocarbon group having 10 or more carbon atoms, such as a compound having an aralkyl group, satisfies the conditions 1 and 2.

By satisfying the condition 2, the π electrons of the compound and the π electrons of the naphthalene-based dispersant that is the component (A) preferentially cause a π-π interaction, thereby suppressing viscosity increase. Inferred to be possible.
Specific examples of the aromatic ring under condition 2 include a benzene ring and a naphthalene ring. Condition 2 preferably has 1 or more and 4 or less aromatic rings.

By satisfying the condition 3, the propyleneoxy group and / or butyleneoxy group which is a hydrophobic part of the compound and the naphthalene ring of the naphthalene-based dispersant of the component (A) preferentially cause a hydrophobic interaction. It is presumed that thickening can be suppressed.
The propyleneoxy group in Condition 3 includes a group in the form of a polyether in which propyleneoxy groups are linked, that is, a polypropyleneoxy group. Similarly, the butyleneoxy group in Condition 3 includes a group in the form of a polyether to which a butyleneoxy group is linked, that is, a polybutyleneoxy group.
In Condition 3, it is preferable to have at least one of a propyleneoxy group having an average addition mole number of more than 1 and 300 or less and a butyleneoxy group having an average addition mole number of more than 1 and 300 or less. The average added mole number of the propyleneoxy group and the butyleneoxy group is more preferably 5 or more, further preferably 10 or more, and more preferably 100 or less, still more preferably 50 or less.

One of the components (C) is a compound that satisfies at least one of the above conditions 1 to 3 and satisfies at least one of the conditions 4 to 5.
By satisfying Condition 4, water-solubility is imparted to the compound satisfying Conditions 1 to 3, and the (A) component naphthalene-based dispersant and the (B) component carboxylic acid-based dispersant or phosphoric acid-based dispersant. A homogeneous solution can be obtained by mixing with.
The ethyleneoxy group of condition 4 includes a group in the form of a polyether in which ethyleneoxy groups are linked, that is, a polyethyleneoxy group.
Condition 4 preferably has an ethyleneoxy group having an average addition mole number of 1 or more and 300 or less.
Moreover, by satisfying Condition 5, water-solubility is imparted to the compound satisfying Conditions 1 to 3, and the (A) component naphthalene-based dispersant and the (B) component carboxylic acid-based dispersant or phosphoric acid-based compound. Even when mixed with a dispersant, a uniform solution is obtained.
The sulfate group of Condition 5 is a group represented by —OSO ₃ Z (Z is a hydrogen atom or a counter ion).

  The component (C) is water-soluble from the viewpoint of uniformity when mixed with the naphthalene dispersant as the component (A) and the carboxylic acid dispersant or the phosphate dispersant as the component (B). Is preferred. Here, the water solubility of the component (C) means that 1 g or more is uniformly dissolved in 20 ° C. water.

  As the component (C), a compound that does not satisfy at least one of the conditions 4 to 5 even if at least one of the conditions 1 to 3 is satisfied, for example, one or two of the conditions 1 to 3 is satisfied. When a compound that does not satisfy at least one of 5 is used, it is considered that the composition containing the component (A), the component (B), and the component (C) is separated and cannot be liquefied. For example, decyl alcohol satisfies the condition 1, but does not satisfy at least one of the conditions 4 to 5. Therefore, the composition containing the component (A), the component (B), and the component (C) containing this is considered to be separated. It is done. Further, for example, nonylphenol satisfies the condition 2, but does not satisfy at least one of the conditions 4 to 5, and therefore the composition containing the component (A), the component (B), and the component (C) is separated. Conceivable. Decyl alcohol and nonylphenol are compounds having low solubility in water.

Examples of the component (C) include one or more compounds selected from the compounds represented by the following general formulas (C1) to (C4).
(A) Naphthalene-based dispersant and (B) carvone comprising at least one compound selected from the compounds represented by the following general formulas (C1) to (C4) as the viscosity reducer for the composite dispersant of the present invention. Examples thereof include a thickener for a composite dispersant used in a composite dispersant with an acid dispersant or a phosphate dispersant.

[Where,
R ¹¹ , R ²¹ , R ³¹ , R ⁴¹ , each hydrocarbon group having 10 or more carbon atoms, R ²² , R ³² , and R ³³ are the same or different and each represents a hydrogen atom or an alkyl having 1 to 3 carbon atoms. Group,
Y ¹ and Y ² are the same or different and are each a hydrogen atom or SO ₃ M, and at least one of Y ¹ and Y ² is SO ₃ M;
AO is an alkyleneoxy group having 2 to 4 carbon atoms,
n1 is the average added mole number of AO, and is a number of 0 or more and 300 or less,
n2 is the average added mole number of AO, and is a number of 1 or more and 300 or less,
n3 and n4 are the same or different and are each the average number of added moles of AO, which is a number of 0 or more, and the total of n3 and n4 is a number of 1 to 300,
n5 and n6 are the same or different and are each the average added mole number of AO, which is a number of 0 or more, and the total of n5 and n6 is a number of 1 to 300, and when n5 is 0, Y ¹ is a hydrogen atom, and when n6 is 0, Y ² is a hydrogen atom,
M is a counter ion,
Represents. ]

[Compound (C1)]
The compound (C1) is a compound represented by the general formula (C1).
R ¹¹ in the general formula (C1) is a hydrocarbon group. This hydrocarbon group includes a hydrocarbon group containing a substituent.
A substituent is an atom or atomic group introduced in place of the hydrogen atom of the most basic organic compound (Chemical Dictionary, 1st edition, 7th edition, Tokyo Chemical Co., Ltd., April 2003) 1 day). The hydrocarbon containing substituent may be a hydrocarbon derivative. Derivatives are compounds that have been modified to such a degree that the structure and properties of the matrix are not changed significantly, such as introduction of functional groups, oxidation, reduction, and substitution of atoms when a certain hydrocarbon is considered as the matrix.

Examples of the hydrocarbon group for R ¹¹ include an alkyl group, an alkenyl group, an aralkyl group, an aryl group, and an aryl group having a substituent (hereinafter referred to as a substituted aryl group). The hydrocarbon group for R ¹¹ is preferably a group selected from an alkyl group, an alkenyl group, and a substituted aryl group. The hydrocarbon group for R ¹¹ can have an aromatic ring. When the hydrocarbon group of R ¹¹ has an aromatic ring, the compound (C1) satisfies both condition 1 and condition 2.

The alkyl group for R ¹¹ is preferably an aliphatic alkyl group, more preferably a linear aliphatic alkyl group, and still more preferably a linear primary aliphatic alkyl group.
The alkenyl group for R ¹¹ is preferably an aliphatic alkenyl group, more preferably a linear aliphatic alkenyl group, and still more preferably a linear primary aliphatic alkenyl group.
Here, the term “primary” for an alkyl group or alkenyl group means that a carbon atom bonded to another group among the carbon atoms of the alkyl group or alkenyl group is a primary carbon atom. For example, R ¹¹ means that the carbon atom bonded to O in the formula among the carbon atoms of the alkyl group or alkenyl group is a primary carbon atom.
The substituted aryl group for R ^{11 is} an aryl group in which a hydrogen atom of an aromatic ring is substituted with a substituent, and examples thereof include an aryl group in which a hydrogen atom of an aromatic ring is substituted with a hydrocarbon group. Examples of the substituted aryl group include an aryl group in which one, two or three of the hydrogen atoms of the aromatic ring are substituted with a substituent such as a hydrocarbon group. The aryl group of the substituted aryl group is preferably a phenyl group. Furthermore, a substituted aryl group having 13 to 30 carbon atoms can be mentioned.
The substituted aryl group is selected from a phenyl group substituted with an alkyl group having 2 or more carbon atoms and preferably 10 or less, more preferably 8 or less, a phenyl group substituted with a benzyl group, and a styrenated phenyl group. Group. Examples of the substituted aryl group include a group selected from a phenyl group substituted with a benzyl group and a styrenated phenyl group.
The substituted aryl group is preferably selected from a monobenzylphenyl group, a dibenzylphenyl group, a tribenzylphenyl group, a monostyrenated phenyl group, a distyrenated phenyl group, a tristyrenated phenyl group, an octylphenyl group, and a nonylphenyl group. More preferably a group selected from a tribenzylphenyl group and a distyrenated phenyl group.
R ¹¹ is preferably an alkyl group from the economical viewpoint.
R ¹¹ is preferably an alkenyl group from the viewpoint of ease of dissolution in water.
R ¹¹ is preferably a substituted aryl group from the viewpoint of developing the strength of the cured product and suppressing foaming of the hydraulic composition.

Specific examples of R ¹¹ in the general formula (C1) include hydrocarbon groups having 10 to 30 carbon atoms.

R ¹¹ preferably has 12 or more carbon atoms, more preferably 16 or more carbon atoms, and preferably 22 or less, more preferably 20 or less, and still more preferably 18 or less.

As specific examples of R ¹¹ , a hydrocarbon group having preferably 10 or more, more preferably 16 or more, and preferably 22 or less, more preferably 20 or less, and a hydrogen atom of the hydrocarbon group is a substituent. Examples include groups selected from substituted hydrocarbon groups.
Other specific examples of R ¹¹ include an alkyl group or an alkenyl group having preferably 10 or more, more preferably 16 or more, and preferably 22 or less, more preferably 20 or less, and the alkyl group or the alkenyl group. And a group selected from a group in which a hydrogen atom is substituted with a substituent, an aryl group substituted with a hydrocarbon group, and a substituted aryl group having 13 to 30 carbon atoms.
Other specific examples of R ¹¹ include
The alkyl group preferably has 10 or more, more preferably 16 or more, and preferably 22 or less, more preferably 20 or less, preferably an aliphatic alkyl group, more preferably a linear aliphatic alkyl group, still more preferably. A linear primary aliphatic alkyl group, and an alkenyl group having preferably 10 or more, more preferably 16 or more, and preferably 22 or less, more preferably 20 or less, preferably an aliphatic alkenyl group, more preferably Is a group selected from a linear aliphatic alkenyl group, more preferably a linear primary aliphatic alkenyl group.
Other specific examples of R ¹¹ include a phenyl group substituted with an alkyl group having 2 or more carbon atoms, and preferably 10 or less, more preferably 8 or less, a phenyl group substituted with a benzyl group, or styrenated. A phenyl group is mentioned. Specific examples of these groups include groups selected from a phenyl group having 13 to 27 carbon atoms and a styrenated phenyl group having 14 to 30 carbon atoms substituted with a benzyl group.

More specifically, examples of R ¹¹ include decyl group, lauryl group, myristyl group, palmityl group, stearyl group, behenyl group, isostearyl group, oleyl group, tribenzylphenyl group, distyrenated phenyl group, and trisyl group. A group selected from styrenated phenyl groups, and from the viewpoint of hydrophobic interaction, preferably lauryl group, myristyl group, palmityl group, stearyl group, behenyl group, isostearyl group, oleyl group, tribenzylphenyl group, and Examples include groups selected from distyrenated phenyl groups, and more preferable examples include groups selected from lauryl groups, myristyl groups, palmityl groups, stearyl groups, oleyl groups, tribenzylphenyl groups, and distyrenylated phenyl groups.

In General Formula (C1), AO is an alkyleneoxy group having 2 to 4 carbon atoms, and preferably an alkyleneoxy group having 2 or 3 carbon atoms. It is preferable that AO contains an alkyleneoxy group having 2 carbon atoms.
In general formula (C1), n1 is the average added mole number of AO, and is 0 or more and 300 or less from the viewpoint of water solubility. n1 is preferably 1 or more, more preferably 10 or more, still more preferably 20 or more, still more preferably 30 or more, still more preferably 40 or more, still more preferably 50 or more, from the viewpoint of water solubility. From the viewpoint of easy interaction with the component (A) and an economical viewpoint, the number is preferably 200 or less, more preferably 150 or less, and still more preferably 100 or less.
In General Formula (C1), M is a counter ion, and examples thereof include a hydrogen ion, an alkali metal ion, an alkaline earth metal ion (1/2 atom), and an ammonium ion.
M is preferably an ammonium ion from the viewpoint of ease of production of the compound.
From the viewpoint of the odor of the compound, M is preferably an alkali metal ion, more preferably an alkali metal ion selected from sodium ions and potassium ions.

  Examples of the compound (C1) include polyoxyethylene alkenyl ether sulfate ester or its salt such as polyoxyethylene oleyl ether sulfate ester, and polyoxyethylene substituted aryl ether such as polyoxyethylene distyrenated phenyl ether sulfate ester Sulfuric acid ester or its salt is mentioned.

[Compound (C2)]
The compound (C2) is a compound represented by the general formula (C2).
The compound (C2) is a nonionic compound. The HLB (Davis method) of the compound (C2) is preferably 0 or more, more preferably 1 or more, still more preferably 3 or more, still more preferably 5 or more, and is preferably 150 or less, more preferably 100 or less, 80 The following is more preferable, and 60 or less is more preferable. Note that the HLB of the compound (C2) can be calculated from the structure.

R ²¹ in the general formula (C2) is a hydrocarbon group. This hydrocarbon group includes a hydrocarbon group containing a substituent. The description about the substituent is the same as that of the compound (C1).

Examples of the hydrocarbon group for R ²¹ include an alkyl group, an alkenyl group, an aralkyl group, an aryl group, and an aryl group having a substituent (hereinafter referred to as a substituted aryl group). The hydrocarbon group for R ²¹ is preferably a group selected from an alkyl group, an alkenyl group, and a substituted aryl group. The hydrocarbon group for R ²¹ can have an aromatic ring. When the hydrocarbon group of R ²¹ has an aromatic ring, the compound (C2) satisfies both condition 1 and condition 2.

The alkyl group for R ²¹ is preferably an aliphatic alkyl group, more preferably a linear aliphatic alkyl group, still more preferably a linear primary aliphatic alkyl group.
The alkenyl group for R ²¹ is preferably an aliphatic alkenyl group, more preferably a linear aliphatic alkenyl group, and still more preferably a linear primary aliphatic alkenyl group.
The substituted aryl group for R ^{21 is} an aryl group in which a hydrogen atom of an aromatic ring is substituted with a substituent, and examples thereof include an aryl group in which a hydrogen atom of an aromatic ring is substituted with a hydrocarbon group. Examples of the substituted aryl group include an aryl group in which one, two or three of the hydrogen atoms of the aromatic ring are substituted with a substituent such as a hydrocarbon group. The aryl group of the substituted aryl group is preferably a phenyl group. Furthermore, a substituted aryl group having 13 to 30 carbon atoms can be mentioned.
The substituted aryl group is selected from a phenyl group substituted with an alkyl group having 2 or more carbon atoms and preferably 10 or less, more preferably 8 or less, a phenyl group substituted with a benzyl group, and a styrenated phenyl group. Group. Examples of the substituted aryl group include a group selected from a phenyl group substituted with a benzyl group and a styrenated phenyl group.
The substituted aryl group is preferably selected from a monobenzylphenyl group, a dibenzylphenyl group, a tribenzylphenyl group, a monostyrenated phenyl group, a distyrenated phenyl group, a tristyrenated phenyl group, an octylphenyl group, and a nonylphenyl group. More preferably a group selected from a tribenzylphenyl group and a distyrenated phenyl group.
R ²¹ is preferably an alkyl group from the economical viewpoint.
R ²¹ is preferably an alkenyl group from the viewpoint of ease of dissolution in water.
R ²¹ is preferably a substituted aryl group from the viewpoint of suppressing foaming.

In the general formula (C2), R ²¹ specifically includes a hydrocarbon group having 10 to 30 carbon atoms.

From the viewpoint of hydrophobic interaction, R ²¹ preferably has 12 or more carbon atoms, more preferably 16 or more carbon atoms, and preferably 22 or less, more preferably 20 or less, still more preferably 18 or less.

As specific examples of R ²¹ , a hydrocarbon group having preferably 10 or more, more preferably 12 or more, and preferably 22 or less, more preferably 20 or less, and a hydrogen atom of the hydrocarbon group is a substituent. Examples include groups selected from substituted hydrocarbon groups.
Other specific examples of R ²¹ include an alkyl group or an alkenyl group having preferably 10 or more, more preferably 12 or more, and preferably 22 or less, more preferably 20 or less, and the alkyl group or the alkenyl group. And a group selected from a substituted aryl group having 13 to 30 carbon atoms, and an aryl group substituted with a hydrocarbon group.
Other specific examples of R ²¹ include
The alkyl group preferably has 10 or more carbon atoms, more preferably 12 or more, and preferably 22 or less, more preferably 20 or less, preferably an aliphatic alkyl group, more preferably a linear aliphatic alkyl group, still more preferably. A linear primary aliphatic alkyl group, and an alkenyl group having preferably 10 or more, more preferably 12 or more, and preferably 22 or less, more preferably 20 or less, preferably an aliphatic alkenyl group, more preferably Is a group selected from a linear aliphatic alkenyl group, more preferably a linear primary aliphatic alkenyl group.
Other specific examples of R ²¹ include a phenyl group substituted with an alkyl group having 2 or more carbon atoms, and preferably 10 or less, more preferably 8 or less, a phenyl group substituted with a benzyl group, or styrenated. A phenyl group is mentioned. Specific examples of these groups include groups selected from a phenyl group having 13 to 27 carbon atoms and a styrenated phenyl group having 14 to 30 carbon atoms substituted with a benzyl group.

More specifically, examples of R ²¹ include decyl group, lauryl group, myristyl group, palmityl group, stearyl group, behenyl group, isostearyl group, oleyl group, tribenzylphenyl group, distyrenated phenyl group, and trisyl group. A group selected from styrenated phenyl groups, and from the viewpoint of hydrophobic interaction, preferably lauryl group, myristyl group, palmityl group, stearyl group, behenyl group, isostearyl group, oleyl group, tribenzylphenyl group, and Examples include groups selected from distyrenated phenyl groups, and more preferable examples include groups selected from lauryl groups, myristyl groups, palmityl groups, stearyl groups, oleyl groups, tribenzylphenyl groups, and distyrenylated phenyl groups.

In General Formula (C2), AO is an alkyleneoxy group having 2 to 4 carbon atoms, and preferably an alkyleneoxy group having 2 or 3 carbon atoms. It is preferable that AO contains an alkyleneoxy group having 2 carbon atoms.
In general formula (C2), n2 is the average added mole number of AO, and is 1 or more and 300 or less from the viewpoint of water solubility. From the viewpoint of water solubility, n2 is preferably 5 or more, more preferably 9 or more, still more preferably 12 or more, still more preferably 20 or more, still more preferably 28 or more, and the mutual relationship with component (A) From the viewpoint of ease of operation and economical viewpoint, it is preferably 200 or less, more preferably 150 or less, still more preferably 100 or less, still more preferably 60 or less, and still more preferably 35 or less.
In General Formula (C2), R ²² is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and preferably a hydrogen atom.

In the compound (C2), when R ²¹ is a lauryl group, from the viewpoint of fluidity, n2 is preferably 23 or more, more preferably 35 or more, preferably 50 or less, and more preferably 45 or less.

Further, in the compound (C2), when R ²¹ is an oleyl group, n2 is preferably 35 or more, preferably 70 or less, and more preferably 50 or less from the viewpoint of fluidity.

  Examples of the compound (C2) include polyoxyethylene alkyl ethers such as polyoxyethylene 2-ethylhexyl ether, polyoxyethylene decyl ether, polyoxyethylene lauryl ether, polyoxyethylene oleyl ether, and polyoxyethylene alkenyl ether. Moreover, polyoxyethylene alkylesters, such as polyoxyethylene monostearate, are mentioned. Moreover, polyoxyethylene substituted aryl ethers, such as polyoxyethylene tribenzyl phenyl ether and polyoxyethylene distyrenated phenyl ether, are mentioned.

[Compound (C3)]
The compound (C3) is a compound represented by the general formula (C3).
The compound (C3) is a nonionic compound. The HLB (Davis method) of the compound (C3) is preferably 0 or more, more preferably 1 or more, still more preferably 3 or more, still more preferably 5 or more, and is preferably 150 or less, more preferably 100 or less, 80 The following is more preferable, and 60 or less is even more preferable. Note that the HLB of the compound (C3) can be calculated from the structure.
R ³¹ in the general formula (C3) is a hydrocarbon group. This hydrocarbon group includes a hydrocarbon group containing a substituent. The description about the substituent is the same as that of the compound (C1).

Examples of the hydrocarbon group for R ³¹ include an alkyl group, an alkenyl group, an aralkyl group, an aryl group, and an aryl group having a substituent. Examples of the substituted aryl group include aryl groups in which one, two or three of the hydrogen atoms of the aromatic ring are substituted. The hydrocarbon group for R ³¹ is preferably a group selected from an alkyl group and an alkenyl group. The hydrocarbon group for R ³¹ can have an aromatic ring. When the hydrocarbon group of R ³¹ has an aromatic ring, the compound (C3) satisfies both condition 1 and condition 2.

The alkyl group for R ³¹ is preferably an aliphatic alkyl group, more preferably a linear aliphatic alkyl group, and still more preferably a linear primary aliphatic alkyl group.
The alkenyl group for R ³¹ is preferably an aliphatic alkenyl group, more preferably a linear aliphatic alkenyl group, and still more preferably a linear primary aliphatic alkenyl group.
R ³¹ is preferably an alkyl group from the economical viewpoint.
R ³¹ is preferably an alkenyl group from the viewpoint of ease of dissolution in water.

Specific examples of R ³¹ in the general formula (C3) include hydrocarbon groups having 10 to 30 carbon atoms.

The number of carbon atoms in R ³¹ is preferably 12 or more, more preferably 16 or more, and preferably 22 or less, more preferably 20 or less, and still more preferably 18 or less.

Specific examples of R ³¹ are preferably a hydrocarbon group having 10 or more carbon atoms, more preferably 12 or more, and preferably 27 or less, more preferably 26 or less, and even more preferably 24 or less, and the hydrocarbon group. And a group selected from hydrocarbon groups in which the hydrogen atom is substituted with a substituent.
Other specific examples of R ³¹ are preferably an alkyl group or an alkenyl group having 10 or more carbon atoms, more preferably 12 or more, and preferably 27 or less, more preferably 26 or less, and even more preferably 24 or less, and And a group selected from a group in which a hydrogen atom of the alkyl group or the alkenyl group is substituted with a substituent.
Other specific examples of R ³¹ are preferably alkyl groups having 10 or more carbon atoms, more preferably 12 or more carbon atoms, preferably 27 or less, more preferably 26 or less, and even more preferably 24 or less, preferably aliphatic. An alkyl group, more preferably a linear aliphatic alkyl group, still more preferably a linear primary aliphatic alkyl group, and preferably 10 or more, more preferably 12 or more, and preferably 27 or less, more preferably Is a group selected from an alkenyl group of 26 or less, more preferably 24 or less, preferably an aliphatic alkenyl group, more preferably a linear aliphatic alkenyl group, still more preferably a linear primary aliphatic alkenyl group.

More specifically, examples of R ³¹ include a group selected from a decyl group, a lauryl group, a myristyl group, a palmityl group, a stearyl group, a behenyl group, an isostearyl group, and an oleyl group. In view of the above, a group selected from lauryl group, myristyl group, palmityl group, stearyl group, behenyl group, isostearyl group, and oleyl group is preferable, and lauryl group, myristyl group, palmityl group, stearyl are more preferable. And a group selected from a group and an oleyl group.

  In General Formula (C3), AO is an alkyleneoxy group having 2 to 4 carbon atoms, and preferably an alkyleneoxy group having 2 or 3 carbon atoms. It is preferable that AO contains an alkyleneoxy group having 2 carbon atoms.

  In general formula (C3), n3 and n4 are the same or different, and are the average added mole numbers of AO, respectively, and are 0 or more. From the viewpoint of water solubility, the total of n3 and n4 is 1 or more, preferably 20 or more, more preferably 50 or more, and from an economic viewpoint, 300 or less, preferably 200 or less, more preferably 150 or less, The number is preferably 100 or less.

In general formula (C3), R ³² and R ³³ are the same or different and are each a hydrogen atom or an alkyl group having 1 to 3 carbon atoms. R ⁶² and R ⁶³ are each preferably a hydrogen atom.

[Compound (C4)]
The compound (C4) is a compound represented by the general formula (C4).
R ⁴¹ in the general formula (C4) is a hydrocarbon group. This hydrocarbon group includes a hydrocarbon group containing a substituent. The description about the substituent is the same as that of the compound (C1).

Examples of the hydrocarbon group for R ⁴¹ include an alkyl group, an alkenyl group, an aralkyl group, an aryl group, and an aryl group having a substituent. Examples of the substituted aryl group include aryl groups in which one, two or three of the hydrogen atoms of the aromatic ring are substituted. The hydrocarbon group for R ⁴¹ is preferably a group selected from an alkyl group and an alkenyl group. The hydrocarbon group for R ⁴¹ can have an aromatic ring. When the hydrocarbon group of R ⁴¹ has an aromatic ring, the compound (C4) satisfies both condition 1 and condition 2.

The alkyl group for R ⁴¹ is preferably an aliphatic alkyl group, more preferably a linear aliphatic alkyl group, and still more preferably a linear primary aliphatic alkyl group.
The alkenyl group for R ⁴¹ is preferably an aliphatic alkenyl group, more preferably a linear aliphatic alkenyl group, and still more preferably a linear primary aliphatic alkenyl group.
R ⁴¹ is preferably an alkyl group from the economical viewpoint.
R ⁴¹ is preferably an alkenyl group from the viewpoint of ease of dissolution in water.

Specific examples of R ⁴¹ in the general formula (C4) include hydrocarbon groups having 10 to 30 carbon atoms.

The number of carbon atoms of R ⁴¹ can be selected from 10 or more, preferably 12 or more, more preferably 16 or more, and preferably 22 or less, more preferably 20 or less, and still more preferably 18 or less.

Specific examples of R ⁴¹ are preferably a hydrocarbon group having 10 or more carbon atoms, more preferably 12 or more carbon atoms, and preferably 27 or less, more preferably 26 or less, still more preferably 24 or less, and the hydrocarbon group. And a group selected from hydrocarbon groups in which the hydrogen atom is substituted with a substituent.
Other specific examples of R ⁴¹ are preferably an alkyl group or an alkenyl group having 10 or more carbon atoms, more preferably 12 or more, and preferably 27 or less, more preferably 26 or less, and even more preferably 24 or less, and And a group selected from a group in which a hydrogen atom of the alkyl group or the alkenyl group is substituted with a substituent.
Other specific examples of R ⁴¹ are preferably an alkyl group having 10 or more carbon atoms, more preferably 12 or more, and preferably 27 or less, more preferably 26 or less, and even more preferably 24 or less, preferably aliphatic. An alkyl group, more preferably a linear aliphatic alkyl group, still more preferably a linear primary aliphatic alkyl group, and preferably 10 or more, more preferably 12 or more, and preferably 27 or less, more preferably Is a group selected from an alkenyl group of 26 or less, more preferably 24 or less, preferably an aliphatic alkenyl group, more preferably a linear aliphatic alkenyl group, still more preferably a linear primary aliphatic alkenyl group.

More specifically, examples of R ⁴¹ include a group selected from a decyl group, a lauryl group, a myristyl group, a palmityl group, a stearyl group, a behenyl group, an isostearyl group, and an oleyl group. In view of the above, a group selected from lauryl group, myristyl group, palmityl group, stearyl group, behenyl group, isostearyl group, and oleyl group is preferable, and lauryl group, myristyl group, palmityl group, stearyl are more preferable. And a group selected from a group and an oleyl group.

  In General Formula (C4), AO is an alkyleneoxy group having 2 to 4 carbon atoms, and preferably an alkyleneoxy group having 2 or 3 carbon atoms. It is preferable that AO contains an alkyleneoxy group having 2 carbon atoms.

In General Formula (C4), Y ¹ and Y ² are the same or different and are each a hydrogen atom or SO ₃ M, and at least one of Y ¹ and Y ² is SO ₃ M. M is a counter ion, and examples thereof include a hydrogen ion, an alkali metal ion, an alkaline earth metal ion (1/2 atom), and an ammonium ion. M is preferably an ammonium ion from the viewpoint of ease of production of the compound. From the viewpoint of the odor of the compound, M is preferably an alkali metal ion, more preferably an alkali metal ion selected from sodium ions and potassium ions.

In general formula (C4), n5 and n6 are the same or different and each represents the average number of added moles of AO and is a number of 0 or more. When n ₅ is 0, Y ¹ is a hydrogen atom, and when n ₆ is 0, Y ² is a hydrogen atom. From the viewpoint of water solubility, the total of n5 and n6 is 1 or more, preferably 20 or more, more preferably 50 or more, and from an economic viewpoint, 300 or less, preferably 200 or less, more preferably 150 or less, The number is preferably 100 or less. n ₅ and n ₆ cannot be 0 at the same time. Thus Compound (C4) _has at least one of _(AO) n5 -SO ₃ M and _(AO) n6 -SO ₃ M.

  Examples of the compound (C4) include sulfated products of aliphatic amine alkylene adducts such as beef tallow amine ethylene oxide adduct sulfated products.

The component (C) is preferably a compound represented by the general formula (C2) from the viewpoint of hydrophobic interaction with the naphthalene ring of the naphthalene-based dispersant that is the component (A).
The component (C) is preferably a compound represented by the general formula (C1) from the viewpoint of water solubility.

  As other component (C), fatty acid ester, sorbitan fatty acid ester, polyoxyalkylene sorbitan fatty acid ester, polyoxyalkylene sorbitol fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, sucrose fatty acid ester, alkyl polyglucoside, polyoxyethylene -The compound chosen from a polyoxypropylene copolymer etc. is mentioned.

Component (C) is preferably a polyoxyethylene sorbitan monoester, more preferably a polyoxyethylene sorbitan monooleate, from the viewpoint of water solubility.
In addition, the component (C) is preferably polyoxyethylene sorbitol tetraester, more preferably polyoxyethylene sorbitol tetraoleate from the viewpoint of water solubility.
The component (C) is preferably a polyoxyethylene-polyoxypropylene copolymer from the viewpoint of water solubility, and the copolymer preferably has an average added mole number of polyoxyethylene of 27 or less.

  The thickener for composite dispersants of the present invention comprising the component (C) can be used by mixing with a liquid component such as water. The present invention provides a thickener composition for composite dispersants containing water and component (C). In the thinning agent composition for composite dispersant, the content of the component (C) can be 5% by mass or more and 60% by mass or less. Moreover, this thinning agent composition for complex dispersants can contain arbitrary components, such as an antifoamer. The antifoaming agent, and the HLB (Davis method) of the fatty acid ester-based antifoaming agent and the ether-based antifoaming agent are preferably less than 0. Moreover, 8 or less is preferable as HLB (Griffin method) of a defoamer, a fatty-acid ester type | system | group antifoamer, and an ether type antifoamer. Moreover, it is preferable that the 1 mass% water suspension of an antifoamer is isolate | separated or clouded visually. Moreover, it is preferable that the turbidity of the 1 mass% water suspension of an antifoamer is 100 NTU or more. Moreover, it is preferable that an antifoamer does not have foaming property. The turbidity of the 1% by mass aqueous suspension can be measured using a portable turbidimeter TN100IR (manufactured by Nikko Hansen Co., Ltd.).

<Thinning method of dispersant mixture>
The viscosity reducing method of the present invention is a method for reducing the viscosity of a dispersant mixture, in which the viscosity of a dispersant mixture containing the component (A), the component (B), and water is reduced by adding the component (C). .
Specific examples and preferred embodiments of the component (A), the component (B), and the component (C) used in the method for reducing the viscosity of the dispersant mixture of the present invention are described in the thickener for composite dispersants of the present invention. Is the same.

  The mass ratio (A) / (B) of the component (A) to the component (B) in the dispersant mixture is preferably 0.1 or more, more preferably 0.2 or more, from the viewpoint of dispersibility of the hydraulic powder. More preferably, it is 0.8 or more, and preferably 9 or less, more preferably 4 or less, still more preferably 2.5 or less.

  In the method for reducing the viscosity of the dispersant mixture according to the present invention, from the viewpoint of interaction with the naphthalene ring of the naphthalene-based dispersant that is the component (A), the component (C) has a mass ratio of (A) / (C). It is preferable to add so that it may become 0.6 or more and 9 or less. The mass ratio of (A) / (C) is more preferably 1 or more, still more preferably 1.5 or more, and preferably 4 or less, more preferably 3 or less, still more preferably 2.5 or less, and even more preferably. Is 2.3 or less, more preferably 2 or less.

<Method for producing composite dispersant composition>
According to the present invention, there is provided a method for producing a composite dispersant composition, wherein the component (A), the component (B), the component (C), and water are mixed.
Specific examples and preferred embodiments of the component (A), the component (B) and the component (C) used in the method for producing the composite dispersant composition of the present invention are described in the thickener for composite dispersant of the present invention. Is the same as

In the method for producing the composite dispersant composition of the present invention, the mass ratio (A) / (B) of the component (A) and the component (B) is preferably 0.1 or more, more preferably 0.2 or more. More preferably, the mixing is performed so that it becomes 0.8 or more, preferably 9 or less, more preferably 4 or less, and still more preferably 2.5 or less.
In the method for producing a composite dispersant composition of the present invention, the mass ratio (A) / (C) of the component (A) and the component (C) is preferably 0.6 or more, more preferably 1 or more, still more preferably. Is 1.5 or more, preferably 9 or less, more preferably 4 or less, more preferably 3 or less, still more preferably 2.5 or less, still more preferably 2.3 or less, and even more preferably 2 or less. Mix like so.

  In the method for producing a composite dispersant composition of the present invention, after mixing the component (A) and water, the component (C) is mixed, and finally the component (B) is mixed. From the viewpoint of uniformity, it is preferable.

  The composite dispersant composition produced by the present invention has a viscosity at 20 ° C. of preferably 300 mPa · s or less, more preferably 200 mPa · s or less, and still more preferably 150 mPa · s or less, from the viewpoint of pumping. The lower limit of the viscosity is preferably 30 mPa · s or more, more preferably 50 mPa · s or more, from the viewpoint of increasing the solid content of the dispersant (transportation cost).

<Composite dispersant composition>
According to the present invention, there is provided a composite dispersant composition containing the thickener for composite dispersants of the present invention, the component (A), and the component (B).
Specific examples and preferred embodiments of the component (A), the component (B), and the component (C), which is a thickener for the composite dispersant, used in the composite dispersant composition of the present invention are as follows. The same as described in the thickener for composite dispersant.

In the composite dispersant composition of the present invention, the mass ratio (A) / (B) of the component (A) to the component (B) is preferably 0.1 or more, more preferably 0.2 or more, and still more preferably 0. .8 or more, and preferably 9 or less, more preferably 4 or less, and still more preferably 2.5 or less.
In the composite dispersant composition of the present invention, the mass ratio (A) / (C) of the component (A) to the component (C) is preferably 0.6 or more, more preferably 1 or more, still more preferably 1.5. Thus, it is preferably 9 or less, more preferably 4 or less, more preferably 3 or less, still more preferably 2.5 or less, still more preferably 2.3 or less, and even more preferably 2 or less.

  The composite dispersant composition of the present invention can contain an antifoaming agent. The antifoaming agent, and the HLB (Davis method) of the fatty acid ester-based antifoaming agent and the ether-based antifoaming agent are preferably less than 0. Moreover, 8 or less is preferable as HLB (Griffin method) of a defoamer, a fatty-acid ester type | system | group antifoamer, and an ether type antifoamer. Moreover, it is preferable that the 1 mass% water suspension of an antifoamer is isolate | separated or clouded visually. Moreover, it is preferable that the turbidity of the 1 mass% water suspension of an antifoamer is 100 NTU or more. Moreover, it is preferable that an antifoamer does not have foaming property. The turbidity of the 1% by mass aqueous suspension can be measured using a portable turbidimeter TN100IR (manufactured by Nikko Hansen Co., Ltd.).

  The composite dispersant composition of the present invention is suitable for inorganic powders. Moreover, the composite dispersant composition of the present invention is suitable for hydraulic powders.

  The composite dispersant composition of the present invention has a viscosity at 20 ° C. of preferably 300 mPa · s or less, more preferably 200 mPa · s or less, and still more preferably 150 mPa · s or less. The lower limit of the viscosity is preferably 30 mPa · s or more, more preferably 50 mPa · s or more.

<Hydraulic composition>
According to the present invention, there is provided a hydraulic composition containing the viscosity reducing agent for a composite dispersant of the present invention, the component (A), the component (B), a hydraulic powder, and water.
Specific examples and preferred embodiments of the component (A), the component (B), and the component (C), which is a thinning agent for a composite dispersant, used in the hydraulic composition of the present invention are the composites of the present invention. The same as described in the thickener for dispersant.

  In the hydraulic composition of the present invention, the mass ratio (A) / (B) of the component (A) to the component (B) is preferably 0.1 or more, more preferably 0.2 or more, still more preferably 0.8. 8 or more, preferably 9 or less, more preferably 4 or less, and still more preferably 2.5 or less.

  In the hydraulic composition of the present invention, the mass ratio (A) / (C) of the component (A) to the component (C) is preferably 0.6 or more, more preferably 1 or more, still more preferably 1.5 or more. And it is preferably 9 or less, more preferably 4 or less, more preferably 3 or less, still more preferably 2.5 or less, still more preferably 2.3 or less, and even more preferably 2 or less.

  The hydraulic powder used in the hydraulic composition of the present invention is a powder having physical properties that are cured by a hydration reaction, and examples thereof include cement and gypsum. Preferred are cements such as ordinary Portland cement, belite cement, medium heat cement, early strength cement, very early strength cement, sulfate resistant cement. Also, blast furnace slag cement, fly ash cement, silica fume cement, etc. in which pozzolanic action and / or latent hydraulic properties such as blast furnace slag, fly ash, silica fume, stone powder (calcium carbonate powder), etc. are added to cement, etc. But you can.

  The hydraulic composition of the present invention comprises (A) component, (B) component and (C) component in total, preferably 0.005 parts by mass or more, more preferably 100 parts by mass of hydraulic powder. Is 0.03 parts by mass or more, more preferably 0.1 parts by mass or more, and preferably 5 parts by mass or less, more preferably 3 parts by mass or less, still more preferably 2 parts by mass or less.

  The hydraulic composition of the present invention can further contain other components. For example, a retarder, a thickener, a waterproofing agent, a fluidizing agent, etc. are mentioned.

  The hydraulic composition of the present invention can be produced by mixing component (A), component (B), component (C), hydraulic powder, and water. In that case, it is preferable to adjust the mixing amount of each component so that it may become said preferable content.

<Use>
The present invention is a compound satisfying at least one of the following conditions 1 to 3 and at least one of the following conditions 4 to 5 (excluding a naphthalene-based dispersant, a carboxylic acid-based dispersant, and a phosphoric acid-based dispersant) [hereinafter, ( C) component] as a thickener for a composite dispersant, wherein the composite dispersant is a composite dispersion of (A) a naphthalene dispersant and (B) a carboxylic acid dispersant or a phosphate dispersant. Provide use, which is an agent.
Condition 1: A hydrocarbon group having 10 or more carbon atoms (excluding an aromatic hydrocarbon group).
Condition 2: It has an aromatic ring.
Condition 3: It has at least one of a propyleneoxy group and a butyleneoxy group.
Condition 4: It has an ethyleneoxy group.
Condition 5: having a sulfate group.
Specific examples and preferred embodiments of the component (A), the component (B), and the component (C) used in the use of the present invention are the same as those described in the thickener for composite dispersants of the present invention. . In addition, the matters described in the thickener for composite dispersants of the present invention can be appropriately applied to the use of the present invention.

<Examples 1-38 and Comparative Examples 1-6>
Table 1 shows the component (A) used in the following examples. Table 2 shows the component (B) used in the following examples. Table 3 shows the component (C) used in the following examples. In Table 3, POE is an abbreviation for polyoxyethylene.

A composite dispersant composition was prepared using the components (A), (B), (C), and water in the amounts shown in Tables 4 to 6, and the viscosity was measured. The viscosity was measured at 20-22 ° C. with a Toki Sangyo B II viscometer. The rotor number is No. 2. Those having a viscosity of less than 300 mPa · S were measured at a rotational speed of 60 rpm, and those having a viscosity of 300 Pa · S or more were measured at 30 rpm. The results are shown in Tables 4-6.
In Tables 4 to 6, the effective content (% by mass) is the total content of the component (A), the component (B) and the component (C) in the composite dispersant composition (the balance is water). .

Moreover, the mortar was prepared using the obtained composite dispersing agent composition, and the mortar flow was measured. The results are shown in Tables 4-6.
(1) Preparation of mortar Using a mortar mixer (all-purpose mixing stirrer model: 5DM-03-γ manufactured by Dalton Co., Ltd.), cement (C) and fine aggregate (S) are added and the kneading is performed at a low speed of the mortar mixer. Rotation (63 rpm) was performed for 10 seconds, and kneading water (W) containing the components (A), (B), and the antifoaming agent was added. Then, the mortar was prepared by kneading for 60 seconds at a low speed rotation (63 rpm) and at a high speed rotation (128 rpm) for 60 seconds.
The blending conditions of mortar were 160 g of water, 400 g of cement, 700 g of fine aggregate, and the water / cement ratio (W / C) was 40% by mass.

The components used are as follows.
・ Water (W): Tap water (water temperature 22 ° C)
Cement (C): Ordinary Portland cement (mixture of two types: Taiheiyo cement / Sumitomo Osaka cement = 1/1, mass ratio) Density 3.16 g / cm ³
・ Fine aggregate (S): Joyo mountain sand density 2.55g / cm ³
The composite dispersant composition was added so that the total amount of the component (A), the component (B), and the component (C) was the addition amount shown in Tables 4 to 6 with respect to 100 parts by mass of the cement.
Moreover, 0.05 g of Foam Rex 797 (manufactured by Nikka Chemical Co., Ltd.) was added to the mortar formulation as an antifoaming agent.

(2) Evaluation of mortar flow According to the test method of JIS R5201, the flow of the prepared mortar was measured. However, no operation to give a drop movement was performed.

Claims (10)

(A) Naphthalene type, comprising a compound satisfying at least one of the following conditions 1 to 3 and at least one of the following conditions 4 to 5 (excluding a naphthalene dispersant, a carboxylic acid dispersant, and a phosphate dispersant) A viscosity reducing agent for a composite dispersant used for a composite dispersant of a dispersant and (B) a carboxylic acid-based dispersant or a phosphoric acid-based dispersant.
Condition 1: A hydrocarbon group having 10 or more carbon atoms (excluding an aromatic hydrocarbon group).
Condition 2: It has an aromatic ring.
Condition 3: It has at least one of a propyleneoxy group and a butyleneoxy group.
Condition 4: It has an ethyleneoxy group.
Condition 5: having a sulfate group.   (A) is a polymer compound having a monomer unit containing a naphthalene ring, and (B) is a monomer unit having a group selected from a carboxylic acid group and a phosphoric acid group, and a monomer unit having an alkyleneoxy group. The thinning agent for composite dispersants according to claim 1, which is a polymer having a weight average molecular weight of 5,000 or more and 1,000,000 or less.   The thickener for composite dispersants according to claim 1 or 2, wherein the compound is water-soluble. The viscosity reducing agent for composite dispersants according to any one of claims 1 to 3, wherein the compound is one or more compounds selected from compounds represented by the following general formulas (C1) to (C4).

[Where,
R ¹¹ , R ²¹ , R ³¹ , R ⁴¹ , each hydrocarbon group having 10 or more carbon atoms, R ²² , R ³² , and R ³³ are the same or different and each represents a hydrogen atom or an alkyl having 1 to 3 carbon atoms. Group,
Y ¹ and Y ² are the same or different and are each a hydrogen atom or SO ₃ M, and at least one of Y ¹ and Y ² is SO ₃ M;
AO is an alkyleneoxy group having 2 to 4 carbon atoms,
n1 is the average added mole number of AO, and is a number of 0 or more and 300 or less,
n2 is the average added mole number of AO, and is a number of 1 or more and 300 or less,
n3 and n4 are the same or different and are each the average number of added moles of AO, which is a number of 0 or more, and the total of n3 and n4 is a number of 1 to 300,
n5 and n6 are the same or different and are each the average added mole number of AO, which is a number of 0 or more, and the total of n5 and n6 is a number of 1 to 300, and when n5 is 0, Y ¹ is a hydrogen atom, and when n6 is 0, Y ² is a hydrogen atom,
M is a counter ion,
Represents. ] The viscosity of the dispersant mixture containing (A) a naphthalene-based dispersant, (B) a carboxylic acid-based dispersant or a phosphoric acid-based dispersant, and water is determined according to at least one of the following conditions 1 to 3 and A method for reducing the viscosity of a dispersant mixture, wherein a compound satisfying at least one (except for a naphthalene-based dispersant, a carboxylic acid-based dispersant, and a phosphoric acid-based dispersant) is added and lowered.
Condition 1: A hydrocarbon group having 10 or more carbon atoms (excluding an aromatic hydrocarbon group).
Condition 2: It has an aromatic ring.
Condition 3: It has at least one of a propyleneoxy group and a butyleneoxy group.
Condition 4: It has an ethyleneoxy group.
Condition 5: having a sulfate group.   (A) is a polymer compound having a monomer unit containing a naphthalene ring, and (B) is a monomer unit having a group selected from a carboxylic acid group and a phosphoric acid group, and a monomer unit having an alkyleneoxy group. The method for reducing the viscosity of a dispersant mixture according to claim 5, which is a polymer having a weight average molecular weight of 5,000 or more and 1,000,000 or less.   The method for reducing the viscosity of a dispersant mixture according to claim 5 or 6, wherein the mass ratio (A) / (B) of (A) and (B) in the dispersant mixture is 0.1 or more and 9 or less.   The method for reducing the viscosity of a dispersant mixture according to any one of claims 5 to 7, wherein the compound is added so that the mass ratio of (A) / the compound is 0.6 or more and 9 or less.   The method for reducing the viscosity of a dispersant mixture according to any one of claims 5 to 8, wherein the compound is water-soluble. The method for reducing the viscosity of a dispersant mixture according to any one of claims 5 to 9, wherein the compound is one or more compounds selected from compounds represented by the following general formulas (C1) to (C4).

[Where,
R ¹¹ , R ²¹ , R ³¹ , R ⁴¹ , each hydrocarbon group having 10 or more carbon atoms, R ²² , R ³² , and R ³³ are the same or different and each represents a hydrogen atom or an alkyl having 1 to 3 carbon atoms. Group,
Y ¹ and Y ² are the same or different and are each a hydrogen atom or SO ₃ M, and at least one of Y ¹ and Y ² is SO ₃ M;
AO is an alkyleneoxy group having 2 to 4 carbon atoms,
n1 is the average added mole number of AO, and is a number of 0 or more and 300 or less,
n2 is the average added mole number of AO, and is a number of 1 or more and 300 or less,
n3 and n4 are the same or different and are each the average number of added moles of AO, which is a number of 0 or more, and the total of n3 and n4 is a number of 1 to 300,
n5 and n6 are the same or different and are each the average added mole number of AO, which is a number of 0 or more, and the total of n5 and n6 is a number of 1 to 300, and when n5 is 0, Y ¹ is a hydrogen atom, and when n6 is 0, Y ² is a hydrogen atom,
M is a counter ion,
Represents. ]