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WO2019053782A1 - Agent de maintien de dispersion pour composition hydraulique - Google Patents

Agent de maintien de dispersion pour composition hydraulique Download PDF

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Publication number
WO2019053782A1
WO2019053782A1 PCT/JP2017/032877 JP2017032877W WO2019053782A1 WO 2019053782 A1 WO2019053782 A1 WO 2019053782A1 JP 2017032877 W JP2017032877 W JP 2017032877W WO 2019053782 A1 WO2019053782 A1 WO 2019053782A1
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WO
WIPO (PCT)
Prior art keywords
group
chemical formula
monomer
hydraulic composition
vinyl copolymer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2017/032877
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English (en)
Japanese (ja)
Inventor
章宏 古田
静佳 有賀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Takemoto Oil and Fat Co Ltd
Original Assignee
Takemoto Oil and Fat Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Takemoto Oil and Fat Co Ltd filed Critical Takemoto Oil and Fat Co Ltd
Priority to PCT/JP2017/032877 priority Critical patent/WO2019053782A1/fr
Priority to MYPI2020000848A priority patent/MY177858A/en
Priority to KR1020207006559A priority patent/KR102192163B1/ko
Priority to PH1/2020/500481A priority patent/PH12020500481B1/en
Priority to CN201780094648.1A priority patent/CN111051265B/zh
Publication of WO2019053782A1 publication Critical patent/WO2019053782A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F216/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical
    • C08F216/12—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical by an ether radical
    • C08F216/14—Monomers containing only one unsaturated aliphatic radical
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C08F220/20—Esters of polyhydric alcohols or phenols, e.g. 2-hydroxyethyl (meth)acrylate or glycerol mono-(meth)acrylate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
    • C08F220/28—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
    • C08F220/285—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety and containing a polyether chain in the alcohol moiety
    • C08F220/286—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety and containing a polyether chain in the alcohol moiety and containing polyethylene oxide in the alcohol moiety, e.g. methoxy polyethylene glycol (meth)acrylate

Definitions

  • the present invention relates to a dispersion holding agent for hydraulic compositions.
  • Various dispersants are widely used in the preparation of hydraulic compositions such as mortar and concrete.
  • slump loss decrease in flowability with time
  • the present invention relates to a dispersion holding agent for a hydraulic composition which can sufficiently prevent slump loss.
  • dispersants for hydraulic compositions comprising a water-soluble vinyl copolymer have been proposed as having slump loss prevention performance per se (see, for example, Patent Documents 1 to 4).
  • these conventional proposals have a problem that the slump loss of the prepared hydraulic composition can not be sufficiently prevented.
  • what combined the slump loss prevention agent with the dispersing agent for hydraulic composition is also proposed (for example, refer patent document 5).
  • this conventional proposal there is still a problem that the slump loss of the prepared hydraulic composition can not be sufficiently prevented.
  • the problem to be solved by the present invention is to provide a dispersion holding agent for a hydraulic composition, which can maintain the fluidity of the hydraulic composition even after a long time since kneading, and which is less delayed in curing. is there.
  • the present inventors found that a specific monomer having a carboxyl group in the molecule and a specific monomer having a polyalkylene glycol residue in the molecule. Furthermore, it has been found that vinyl copolymers obtained by copolymerizing these monomers with other monomers copolymerizable with these monomers are properly suitable as dispersion holding agents for hydraulic compositions, if necessary.
  • the present invention comprises a vinyl copolymer obtained from a monomer A represented by the following chemical formula 1 and a monomer B represented by the following chemical formula 2, for a hydraulic composition It relates to the dispersion holding agent. Further, the present invention is obtained from a monomer A represented by the following chemical formula 1, a monomer B represented by the following chemical formula 2, and another monomer C copolymerizable with these monomers.
  • the present invention relates to a dispersion-retaining agent for a hydraulic composition, characterized by containing a vinyl copolymer as described above.
  • R 1 , R 2 a hydrogen atom, a methyl group or an organic group p: 0 or 1 represented by the following chemical formula 3
  • X organic group represented by the following chemical formula 4
  • Y organic group represented by the following chemical formula 5
  • M 1 hydrogen atom, ammonium group, organic amine group, alkali metal or 1/2 equivalent alkaline earth metal
  • r 0 or 1 M 2 : hydrogen atom, ammonium group, organic amine group, alkali metal or 1/2 equivalent of alkaline earth metal
  • AO an oxyalkylene group having 2 to 4 carbon atoms
  • m an integer of 1 to 10
  • R 3 an alkylene group which may have a hetero atom, an aromatic ring group or an unsaturated hydrocarbon group
  • s integer from 0 to 4 t: 0 or 1 AO: an oxyalkylene group having a carbon number of 2 to 4 n: an integer of 0 to 300
  • R 4 a hydrogen atom, an alkyl group having a carbon number of 1 to 22 or an aliphatic acyl group having a carbon number of 1 to 22
  • R 4 is an alkyl group having 1 to 22 carbon atoms or an aliphatic acyl group having 1 to 22 carbon atoms
  • the dispersion holding agent for a hydraulic composition according to the present invention includes a monomer A shown in the above-mentioned chemical formula 1 and a monomer B shown in the above-mentioned chemical formula 2 And a monomer containing vinyl copolymer (hereinafter referred to as vinyl copolymer P), such monomer A, such monomer B, and other monomers C copolymerizable therewith. And those containing a vinyl copolymer (hereinafter referred to as vinyl copolymer Q) obtained from a monomer A shown in the above-mentioned chemical formula 1 and a monomer B shown in the above-mentioned chemical formula 2 And a monomer containing vinyl copolymer (hereinafter referred to as vinyl copolymer P), such monomer A, such monomer B, and other monomers C copolymerizable therewith. And those containing a vinyl copolymer (hereinafter referred to as vinyl copolymer Q) obtained from
  • the vinyl copolymer P is a vinyl copolymer obtained from the monomer A and the monomer B, and the ratio of the both is not particularly limited.
  • Preferred are vinyl copolymers having a weight average molecular weight of 8,000 to 200,000, having a ratio of 1 to 99 mol% of structural units and 1 to 99 mol% (total of 100 mol%) of structural units derived from monomer B.
  • R 1 is a hydrogen atom, a methyl group or an organic group shown by Chemical Formula 3 above, p is 0 or 1 and X is an organic group shown by Chemical Formula 4 above, M 1 is a hydrogen atom, an ammonium group, an organic amine group, an alkali metal or a half equivalent of an alkaline earth metal.
  • r is 0 or 1
  • M 2 is a hydrogen atom, an ammonium group, an organic amine group, an alkali metal or a half equivalent alkaline earth metal, but the organic group shown in the formula 3 is Is a carboxyl group or a methylene carboxyl group.
  • AO is an oxyalkylene group having 2 to 4 carbon atoms
  • m is an integer of 1 to 10
  • R 3 is an alkylene group which may have a hetero atom, an aromatic ring group or an unsaturated hydrocarbon.
  • an oxyethylene group, an oxypropylene group and an oxybutylene group may be mentioned, but an oxyethylene group and an oxypropylene group are preferable, and an oxyethylene group is more preferable. These may be one kind or two or more kinds.
  • m is an integer of 1 to 10, preferably an integer of 1 to 5, and more preferably 1 or 2.
  • R 3 is an alkylene group which may have a hetero atom, an aromatic ring group or an unsaturated hydrocarbon group, and the number of carbon atoms thereof is not particularly limited.
  • alkylene group which may have a hetero atom examples include methylene group, ethylene group, propylene group, butylene group, cyclohexyl group, oxymethylene group, oxyethylene group, oxypropylene group, oxybutylene group and the like.
  • aromatic ring group which may have a hetero atom phenylene group, tolylene group, naphthylene group, thiophene, furan, pyrrole, benzothiophene, benzofuran, benzopyrrole, triazine, imidazole, benzoimidazole, triazole, thiazole, thiazole, etc. Can be mentioned.
  • examples of the unsaturated hydrocarbon group which may have a hetero atom include ethynyl group, propynyl group, butynyl group, and groups having a carbonyl group or an imino group before or after these groups, and organic compounds represented by the following chemical formula 6 Groups are preferred.
  • R 5 is an alkylene group having 1 to 22 carbon atoms which may have a hetero atom, an aromatic ring group or an unsaturated hydrocarbon group, u is an integer of 0 to 2, M 3 is a hydrogen atom, an organic ammonium group , An organic group, an alkali metal or a half equivalent of an alkaline earth metal.
  • R 5 is an alkylene group having 1 to 22 carbon atoms which may have a hetero atom, an aromatic group or an unsaturated hydrocarbon group, and an alkylene group which may have a hetero atom, an aromatic ring group or non-
  • the saturated hydrocarbon group is as described above for R 3 in Chemical formula 4, but among these, R 5 is one having 1 to 22 carbon atoms, preferably one having 1 to 6 carbon atoms.
  • M 1 , M 2 and M 3 are a hydrogen atom, an ammonium group, an organic amine group, an alkali metal or a half equivalent alkaline earth metal. These may be one kind or two or more kinds.
  • the ammonium group include ammonium group, tetramethyl ammonium group, tetrabutyl ammonium group and the like.
  • the organic amine group alkylamine groups such as methylamine group, dimethylamine group, trimethylamine group and triethylamine group, alkanolamine groups such as diethanolamine group and triethanolamine group, and aromatic amine groups such as pyridinium group and rutidinium group Can be mentioned.
  • alkali metal lithium, sodium, potassium, cesium and the like can be mentioned.
  • alkaline earth metal calcium, magnesium, barium and the like can be mentioned. However, in the case of an alkaline earth metal, it is 1/2 equivalent.
  • the monomer A described above examples include 2-acryloyloxyethyl succinic acid, 2-methacryloyloxyethyl succinic acid, 2-acryloyloxyethyl hexahydrophthalic acid, 2-acryloyloxyethyl phthalic acid And the like, and also a condensation product of an unsaturated carboxylic acid ester having a hydroxyl group at an end such as hydroxyethyl (meth) acrylate, polyoxyethylene mono (meth) acrylic acid ester, and a 2- to 4-basic carboxylic acid anhydride Can be mentioned.
  • Such a condensate is obtained by the condensation of an unsaturated carboxylic acid ester having a hydroxyl group at an end with a 2 to 4 basic carboxylic acid anhydride.
  • unsaturated carboxylic acid esters that can be used for condensation include hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate, hydroxypropyl methacrylate, hydroxybutyl acrylate, hydroxybutyl methacrylate, polyoxyalkylene mono (meth) acrylate, etc. It can be mentioned.
  • a 2- to 4-basic carboxylic acid anhydride which can be used for condensation
  • succinic acid anhydride maleic acid anhydride, trimellitic acid anhydride, cyclohexyl 1, 2 dicarboxylic acid anhydride, pyromellitic acid anhydride, etc.
  • the monomer A one or more of such condensates can be used, but a condensate of hydroxyethyl (meth) acrylate and a 2- to 4-basic carboxylic acid anhydride is preferred.
  • the above condensates can be obtained by known methods. For example, a method of heating and stirring an unsaturated carboxylic acid ester having a hydroxyl group at the end and a 2 to 4 basic carboxylic acid anhydride in the absence of a solvent, an unsaturated carboxylic acid having a hydroxyl group at the end in the presence of a solvent and a condensing agent There is a method of condensing an acid ester and a 2 to 4 basic carboxylic acid anhydride.
  • R 2 is a hydrogen atom, a methyl group or an organic group shown by chemical formula 3 above
  • Y is an organic group shown by chemical formula 5 above.
  • s is an integer of 0 to 4
  • t is 0 or 1
  • AO is an oxyalkylene group having 2 to 4 carbon atoms
  • n is an integer of 0 to 300
  • R 4 is a hydrogen atom, 1 to 22 carbon atoms It is an alkyl group or an aliphatic acyl group having 1 to 22 carbon atoms.
  • R 4 is an alkyl group having 1 to 22 carbon atoms or an aliphatic acyl group having 1 to 22 carbon atoms.
  • R 4 in Chemical Formula 5 1) hydrogen atom, 2) methyl group, ethyl group, butyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group, undecyl group, dodecyl group, tetradecyl group, pentadecyl Group, hexadecyl group, heptadecyl group, octadecyl group, nonadecyl group, eicosyl group, heneicosyl group, helicosyl group, docosyl group, tricosyl group, tetracosyl group, pentacosyl group, hexacosyl group, heptacosyl group, octacosyl group, 2-methyl-pentyl group, 2- Ethyl-hexyl group, 2-propyl-heptyl group, 2-butyl-octyl group, 2-pentyl-non
  • AO in Chemical Formula 5 is as described above for AO in Chemical formula 4, and n is an integer of 0 to 300, and as (AO) n, 0 to 160 oxyethylene units and / or oxypropylene A (poly) oxyalkylene group composed of units is preferred.
  • the monomer B described above include hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate, hydroxypropyl methacrylate, methyl acrylate methyl methacrylate, propyl acrylate, propyl methacrylate, butyl acrylate, methacrylate Butyl, ⁇ -allyl- ⁇ -acetyl- (poly) oxyethylene, ⁇ -allyl- ⁇ -acetyl- (poly) oxyethylene (poly) oxypropylene, ⁇ -allyl- ⁇ -hydroxy- (poly) oxyethylene, ⁇ -Allyl- ⁇ -hydroxy- (poly) oxyethylene (poly) oxypropylene, ⁇ -methallyl- ⁇ -hydroxy- (poly) oxyethylene, ⁇ -methallyl- ⁇ -methoxy- (poly) oxyethylene, ⁇ -methallyl- ⁇ -hydroxy- (po I) Oxyethylene (poly)
  • the monomer B shown in Chemical formula 2 one or two or more kinds can be used, but it is preferable to use two or more, and in particular, when n in the chemical formula 5 is 0 to 8, a single amount Those containing two types of monomer B when n in the compound B and compound 9 is 9 to 160 are preferable, and more specifically, hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate, hydroxypropyl methacrylate Preferably contain one or more monomer B selected from methyl acrylate, methyl methacrylate, propyl acrylate, propyl methacrylate, butyl acrylate and butyl methacrylate and another monomer B .
  • the vinyl copolymer Q is obtained by copolymerizing another monomer C copolymerizable therewith, in addition to the monomer A and the monomer B described above.
  • monomer C 1, allyl sulfonic acid, methallyl sulfonic acid, alkali metal salts thereof, alkaline earth metal salts, ammonium salts, amine salts etc.
  • acrylic acid monomers such as maleic acid, fumaric acid, itaconic acid and citraconic acid, alkali metal salts thereof, alkaline earth metal salts, ammonium salts, amine salts, methyl esters, ethyl esters, anhydrides, etc.
  • the proportion of the monomer A in the total monomers used is preferably 1 to 99 mol%, more preferably 50 to 90 mol%.
  • the proportion of the monomer B is preferably 1 to 99% by mole, and more preferably 1 to 55% by mole.
  • the proportion of the other monomer C is preferably 50 mol% or less, more preferably 25 mol% or less, and particularly preferably 10 mol% or less.
  • the mass average molecular weight of the vinyl copolymers P and Q is preferably 8,000 to 200,000, more preferably 9,000 to 150,000, and particularly preferably 10,000 to 100,000.
  • the mass average molecular weight is a value in terms of polyethylene glycol calculated by gel permeation chromatography (hereinafter referred to as GPC).
  • the vinyl copolymers P and Q to be provided for the dispersion holding agent of the present invention can be obtained by known methods.
  • examples thereof include radical polymerization using water as a solvent, radical polymerization using an organic solvent as a solvent, radical polymerization using no solvent, and the like.
  • radical polymerization initiators for use in such radical polymerization include peroxides such as hydrogen peroxide, ammonium persulfate, sodium persulfate and potassium persulfate, and azo compounds such as azobisisobutyronitrile at a polymerization reaction temperature. Those which decompose and generate radicals, and optionally include redox initiators which use reducing agents together.
  • a chain transfer agent can also be used to bring the mass average molecular weight of the resulting vinyl copolymer into the desired range.
  • the chain transfer agent is not particularly limited as long as it can adjust the molecular weight of the vinyl copolymer, and known chain transfer agents can be used.
  • the vinyl copolymers P and Q can also be obtained by anionic polymerization or cationic polymerization in addition to the radical polymerization described above, and as an initiator used for these polymerizations, alkali metals, butyl lithium, Grignard reagents, metals Examples thereof include alkoxides, Lewis acids such as boron trifluoride, and Bronsted acids such as sulfuric acid, but a method obtained by radical polymerization in a solvent-free or aqueous solvent is preferable.
  • the dispersion holding agent of the present invention is used as an admixture during preparation of a hydraulic composition such as mortar and concrete, and the slump loss of the mortar and concrete prepared using this is sufficiently prevented.
  • a hydraulic composition such as mortar and concrete
  • materials used for preparation of mortar and concrete there is no particular limitation on the materials used for preparation of mortar and concrete.
  • a binder 1) various portland cements such as ordinary portland cement, early strength portland cement, moderate heat portland cement, low heat portland cement, 2) blast furnace cement, Various mixed cements such as fly ash cement and silica fume cement, 3) alumina cement and the like can be mentioned.
  • the water / binder ratio is also not particularly limited, but the water / binder ratio is preferably 20 to 70%, more preferably 35 to 65%.
  • the type of other dispersants used for preparation of mortar and concrete is not particularly limited, but the dispersant to be used in combination is selected from oxycarboxylic acids and salts thereof, polycarboxylic acids and aromatic sulfonic acids. One or two or more are preferable.
  • additives such as an AE agent, an antifoaming agent, a setting retarder, a hardening accelerator, a shrinkage reducing agent, and a thickener can also be used.
  • the amount of the dispersion holding agent used in the present invention is not particularly limited, but it is usually 0.005 to 1.0 parts by mass, preferably 0.005 to 1.0 parts by mass in terms of solid content per 100 parts by mass of the binder. The amount is 0.5 parts by mass, more preferably 0.01 to 0.5 parts by mass.
  • dispersion holding agent of the present invention According to the dispersion holding agent of the present invention, slump loss of the hydraulic composition can be sufficiently prevented.
  • the dispersion holding agent of the present invention is used in combination with a water-soluble vinyl copolymer as described above, which has been conventionally proposed as a dispersant for hydraulic compositions, both effects combine, and temporally in hydraulic compositions as well. It can provide excellent liquidity.
  • Test Category 1 Synthesis of Monomer A
  • monomer (A-5) 127.7 g of hydroxyethyl acrylate, 192.1 g of trimellitic anhydride, 0.64 g of 4-methoxyphenol, and 300 mL of pyridine were equipped with a thermometer, a stirrer, and an air introduction tube
  • the reaction vessel was charged and dissolved uniformly with stirring, and then heated while raising dry air at a flow rate of 5 mL / min, and reacted at a temperature of 80 ° C. for 8 hours.
  • pyridine was distilled off with an evaporator to obtain a monoester (A-5) of hydroxyethyl acrylate and trimellitic acid.
  • Test Category 2 (Synthesis of Vinyl Copolymer)
  • EX-1 vinyl copolymer
  • a reaction vessel similar to that of Example 1 2.3 g of acid was charged, the atmosphere was replaced with nitrogen while stirring, and the temperature of the reaction system was adjusted to 70 ° C. with a hot water bath. The reaction was initiated by adding an aqueous solution of 28.0 g of 3.0% sodium persulfate.
  • each of the vinyl copolymers synthesized as described above is summarized in Table 1.
  • a solution is adjusted so that it may become 5% with heavy water, it measures by NMR of 300 MHz, and each monomer polymerizes. I confirmed that it was.
  • the mass mean molecular weight was shown by polyethylene glycol conversion by GPC.
  • A-1 2-acryloyloxyethylsuccinic acid
  • A-2 2-methacryloyloxyethylsuccinic acid
  • A-3 2-acryloyloxyethylhexahydrophthalic acid
  • A-4 2-acryloyloxyethyl phthalic acid
  • A-5 Monoester of hydroxyethyl acrylate and trimellitic acid
  • A-6 Monoester of hydroxypropyl acrylate and succinic acid
  • Oxyethylene M-2: ⁇ -methacryloyl- ⁇ -methoxy-poly (n 23)
  • M-5 ⁇ -methacrylo
  • Test category 3 Evaluation as dispersant for hydraulic composition
  • Vinyl copolymer (EX-1) synthesized by Takemoto Yushi Co., Ltd.
  • HP-11 Under the trade name Chupol HP-11 (hereinafter referred to as HP-11) 0.6 to 0.8% of ordinary portland cement, in the test category 2 0.1% to 0.3% of a 20% aqueous solution of (EX-9), (CE-1) and (CE-2) to ordinary Portland cement, and an AE agent (trade name AE-300 manufactured by Takemoto Yushi Co., Ltd.)
  • HP-11 0.6 to 0.8% of ordinary portland cement
  • HP-11 0.6 to 0.8% of ordinary portland cement
  • EX-9 a 20% aqueous solution of (EX-9), (CE-1) and (CE-2) to ordinary Portland cement
  • AE agent trade name AE-300 manufactured by Takemoto Yushi Co., Ltd.
  • Table 2 summarizes the unit amounts and the
  • Slump flow Measured according to JIS-A1150 immediately after mixing and at intervals of 30 minutes for each concrete that was allowed to stand. Air content: Immediately after mixing and at intervals of 30 minutes, the concrete which was allowed to stand was measured according to JIS-A1128. Compressive strength: In accordance with JIS-A1108, the sample size was 100 mm in diameter ⁇ 200 mm in height, and was measured at a material age of 24 hours. Bleeding rate: Measured in accordance with JIS-A1123.
  • the fluidity of the hydraulic composition can be held for a long time without causing curing delay.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
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  • Medicinal Chemistry (AREA)
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  • Ceramic Engineering (AREA)
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Abstract

L'invention fournit un agent de maintien de dispersion pour composition hydraulique qui permet de maintenir la fluidité d'une composition hydraulique, et qui présente peu de risques de retard de durcissement, y compris après écoulement d'une longue durée après malaxage. Un copolymère de vinyle dans lequel sont copolymérisés un monomère spécifique possédant un groupe carboxyle dans chaque molécule, un monomère spécifique possédant un résidu de glycol de polyoxyalkylène dans chaque molécule, et si nécessaire, un autre monomère permettant une copolymérisation avec ces monomères, est mis en œuvre en tant qu'agent de maintien de dispersion pour composition hydraulique.
PCT/JP2017/032877 2017-09-12 2017-09-12 Agent de maintien de dispersion pour composition hydraulique Ceased WO2019053782A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PCT/JP2017/032877 WO2019053782A1 (fr) 2017-09-12 2017-09-12 Agent de maintien de dispersion pour composition hydraulique
MYPI2020000848A MY177858A (en) 2017-09-12 2017-09-12 Dispersion-maintaining agent for hydraulic composition
KR1020207006559A KR102192163B1 (ko) 2017-09-12 2017-09-12 수경성 조성물용 분산유지제
PH1/2020/500481A PH12020500481B1 (en) 2017-09-12 2017-09-12 Dispersion-maintaining agent for hydraulic composition
CN201780094648.1A CN111051265B (zh) 2017-09-12 2017-09-12 水硬性组合物用分散保持剂

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/032877 WO2019053782A1 (fr) 2017-09-12 2017-09-12 Agent de maintien de dispersion pour composition hydraulique

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Publication Number Publication Date
WO2019053782A1 true WO2019053782A1 (fr) 2019-03-21

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JP7099767B1 (ja) * 2021-11-04 2022-07-12 竹本油脂株式会社 水硬性組成物用混和剤及び水硬性組成物

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