WO2020202435A1 - Agent antimousse pour composition hydraulique, et composition hydraulique - Google Patents

Agent antimousse pour composition hydraulique, et composition hydraulique Download PDF

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Publication number
WO2020202435A1
WO2020202435A1 PCT/JP2019/014477 JP2019014477W WO2020202435A1 WO 2020202435 A1 WO2020202435 A1 WO 2020202435A1 JP 2019014477 W JP2019014477 W JP 2019014477W WO 2020202435 A1 WO2020202435 A1 WO 2020202435A1
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Prior art keywords
group
hydraulic composition
poly
carbon atoms
adduct
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PCT/JP2019/014477
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English (en)
Japanese (ja)
Inventor
郁香 村松
内藤　裕樹
伸二 玉木
章宏 古田
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竹本油脂株式会社
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Application filed by 竹本油脂株式会社 filed Critical 竹本油脂株式会社
Priority to MYPI2021005133A priority Critical patent/MY197652A/en
Priority to CN201980093991.3A priority patent/CN113557218A/zh
Priority to PCT/JP2019/014477 priority patent/WO2020202435A1/fr
Priority to JP2021511804A priority patent/JP7191416B2/ja
Priority to TW108114938A priority patent/TW202037635A/zh
Publication of WO2020202435A1 publication Critical patent/WO2020202435A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/02—Foam dispersion or prevention
    • B01D19/04—Foam dispersion or prevention by addition of chemical substances
    • 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
    • C04B24/12—Nitrogen containing compounds organic derivatives of hydrazine
    • 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
    • C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B24/32—Polyethers, e.g. alkylphenol polyglycolether
    • 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
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/32—Polymers modified by chemical after-treatment
    • C08G65/329—Polymers modified by chemical after-treatment with organic compounds
    • C08G65/333—Polymers modified by chemical after-treatment with organic compounds containing nitrogen

Definitions

  • the present invention relates to a defoaming agent for a hydraulic composition and a hydraulic composition containing the same. More specifically, the present invention relates to a defoaming agent for a hydraulic composition having high compatibility with an admixture and having excellent defoaming property and bubble stability, and a hydraulic composition containing the same.
  • a hydraulic composition typified by concrete is produced by mixing and stirring cement, water, fine aggregate, coarse aggregate, admixture and the like.
  • the admixture used includes water reduction of lignin sulfonic acid (salt), oxycarboxylic acid (salt), naphthalene sulfonic acid formaldehyde condensate (salt), melamine sulfonic acid formaldehyde condensate (salt), polycarboxylic acid compound and the like.
  • a defoaming agent is often added in order to reduce the coarse air in the water-hard composition generated by entrainment by mixing and stirring, and to adjust the amount of air to an appropriate range.
  • antifoaming agents oxyalkylene-based, silicone-based, alcohol-based, mineral oil-based, fatty acid-based, fatty acid ester-based and the like are known.
  • Patent Document 1 An additive (Patent Document 1) consisting of a mixture of a polycarboxylic acid compound and a specific nitrogen-containing polyoxyalkylene compound, and strength and durability, for the purpose of maintaining a uniform aqueous solution state even when a defoaming agent is blended.
  • Specific polyoxyalkylene compounds have been proposed in order to form a cured product having excellent properties (Patent Documents 2 to 6).
  • JP-A-7-232945 JP-A-10-226550 Japanese Unexamined Patent Publication No. 2003-226565 Japanese Unexamined Patent Publication No. 2003-226566 Japanese Unexamined Patent Publication No. 2003-226567 Japanese Unexamined Patent Publication No. 2003-300766
  • a defoaming agent having high defoaming property has high hydrophobicity, and when blended with an admixture, it separates into the upper part of the admixture over time due to the difference in density, and the amount of air in the hydraulic composition is increased. There was a problem that it was difficult to control it stably.
  • the defoaming agents shown in Patent Documents 1 to 6 are improved in compatibility with the admixture, but have a problem that they cannot have excellent defoaming property and bubble stability at the same time.
  • the defoaming agent for a hydraulic composition of the present invention is for a hydraulic composition having high compatibility with an admixture, excellent defoaming property, and excellent foam stability.
  • An object of the present invention is to provide an antifoaming agent and a hydraulic composition containing the same.
  • a defoaming agent for a hydraulic composition in which a polyoxyalkylene is added to a specific alkylamine at a specific ratio is particularly suitable. ..
  • the following antifoaming agents for hydraulic compositions and hydraulic compositions containing them are provided.
  • a defoaming agent for a hydraulic composition containing a nitrogen-containing polyoxyalkylene compound represented by the following general formula (1) (However, in the formula, R 1 represents an alkyl group or an alkenyl group having 10 to 24 carbon atoms, and R 2 and R 3 are the same or different hydrocarbon groups having a hydrogen atom and / or 1 to 10 carbon atoms.
  • a 1 O and A 2 O represent the same or different oxyalkylene groups having 2 to 4 carbon atoms, and m and n are the same or different integers of 0 to 100 and. The condition of 20 ⁇ m + n ⁇ 100 is satisfied, and the oxyalkylene group having 3 and / or 4 carbon atoms is 65 mol% or more among A 1 O and A 2 O.
  • the A 1 O and the A 2 O are the same or different, and an oxyalkylene group having 2 and / or 3 carbon atoms (provided that at least one of A 1 O and A 2 O has 3 carbon atoms).
  • the antifoaming agent for a hydraulic composition according to any one of the above [1] to [7], which is (including the oxyalkylene group of).
  • the defoaming agent for a hydraulic composition of the present invention there is an effect that the compatibility with the admixture is high, the defoaming property is excellent, and the foam stability can be excellent.
  • the defoaming agent for a hydraulic composition of the present invention contains a nitrogen-containing polyoxyalkylene compound represented by the following general formula (1).
  • R 1 in the general formula (1) is an alkyl group having 10 to 24 carbon atoms or an alkenyl group having 10 to 20 carbon atoms, and may have either a straight chain structure or a branched chain structure. These are not particularly limited, but may be derived from petroleum raw materials, vegetable oils and fats such as palm oil and sunflower oil, and animal fats and oils such as beef tallow.
  • alkyl group having 10 to 24 carbon atoms examples include a decyl group, an undecylic group, a dodecyl group, a tridecylic group, a tetradecyl group, a pentadecyl group, a hexadecyl group, a heptadecyl group, an octadecyl group, a nonadecylic group, an icosyl group, a henicosyl group, and a docosyl group. Examples thereof include a group, a tridecylic group, and a tetracosyl group.
  • an alkyl group having 14 to 18 carbon atoms such as a tetradecyl group, a pentadecyl group, a hexadecyl group, an isohexadecyl group, a heptadecyl group and an octadecyl group is preferable.
  • Alkyl group compounds having R 1 of less than 10 carbon atoms have low defoaming properties and bubble stability, and alkyl group compounds having R 1 having more than 24 carbon atoms have high hydrophobicity and are mixed with admixtures. Compatibility is reduced.
  • alkenyl group having 10 to 24 carbon atoms examples include a decenyl group, an undecenyl group, a dodecenyl group, a tridecenyl group, a tetradecenyl group, a pentadecenyl group, a hexadecenyl group, a heptadecenyl group, an octadecenyl group, a nonadesenyl group, an icosenyl group, a henicocenyl group, and a docosenyl group.
  • Examples include a group, a tricosenyl group, a tetracosenyl group and the like.
  • an alkenyl group having 14 to 18 carbon atoms such as a tetradecenyl group, a pentadecenyl group, a hexadecenyl group, a heptadecenyl group and an octadecenyl group is preferable.
  • An alkenyl group compound having an R 1 of less than 10 carbon atoms has low defoaming property and bubble stability, and an alkenyl group compound having an R 1 of more than 24 carbon atoms has a high hydrophobicity and is used with an admixture. Compatibility is reduced.
  • R 2 and R 3 in the general formula (1) are the same or different, hydrogen atoms and / or hydrocarbon groups having 1 to 10 carbon atoms.
  • the hydrocarbon group having 1 to 10 carbon atoms may have either a straight chain structure or a branched chain structure, and may be either a saturated hydrocarbon group or an unsaturated hydrocarbon group.
  • Examples of the hydrocarbon group having 1 to 10 carbon atoms include an alkyl group having 1 to 10 carbon atoms and an alkenyl group having 2 to 10 carbon atoms.
  • alkyl group having 1 to 10 carbon atoms examples include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, an isooctyl group, a nonyl group and a decyl group.
  • an alkyl group having 1 to 3 carbon atoms such as a methyl group, an ethyl group and a propyl group is preferable.
  • Alkyl group compounds having R 2 and R 3 having more than 10 carbon atoms have high hydrophobicity and low compatibility with admixtures.
  • the alkenyl group having 2 to 10 carbon atoms include an ethenyl group, a propenyl group, a butenyl group, a pentenyl group, a hexenyl group, a heptenyl group, an octenyl group, a nonenyl group and a decenyl group.
  • an alkenyl group having 2 or 3 carbon atoms of an ethenyl group or a propenyl group is preferable.
  • the alkenyl group compound having R 2 and R 3 having more than 10 carbon atoms has high hydrophobicity and low compatibility with the admixture.
  • R 2 and R 3 in the general formula (1) are hydrogen atoms.
  • a 1 O and A 2 O are oxyalkylene groups having the same or different carbon atoms and having 2 to 4 carbon atoms, and examples thereof include an oxyethylene group, an oxypropylene group, and an oxybutylene group.
  • Examples of the oxypropylene group include a 1,2-oxypropylene group and a 1,3-oxypropylene group.
  • Examples of the oxybutylene group include 1,2-oxybutylene group, 1,3-oxybutylene group, 1,4-oxybutylene group, 2,3-oxybutylene group and oxyisobutylene group. It is preferable that A 1 O and A 2 O are the same or different, and are oxyalkylene groups having 2 and / or 3 carbon atoms.
  • At least one of A 1 O and A 2 O contains an oxyalkylene group having 3 carbon atoms.
  • an oxyalkylene group an oxyethylene group and an oxypropylene group are preferable.
  • each of A 1 O and A 2 O is two or more types, it may be in any form of a random adduct, a block adduct, and an alternating adduct.
  • m and n are the same or different, and are integers of 0 to 100, preferably integers of 0 to 80.
  • m and n are integers satisfying the condition of 20 ⁇ m + n ⁇ 100, preferably an integer satisfying the condition of 30 ⁇ m + n ⁇ 80, and more preferably satisfying the condition of 35 ⁇ m + n ⁇ 80. It is an integer.
  • the total of m and n is less than 20, the defoaming property is insufficient and the bubble stability is also lowered. If the total exceeds 100, the production becomes difficult due to the high viscosity, and the compatibility with the admixture becomes insufficient.
  • the oxyalkylene group having 3 and / or 4 carbon atoms in A 1 O and A 2 O is preferably 65 mol% or more. Is 86 mol% or more, more preferably 90 mol% or more.
  • the oxyalkylene group having 3 and / or 4 carbon atoms in A 1 O and A 2 O is less than 65 mol%, the water solubility is excessively increased, so that sufficient defoaming property cannot be obtained and the bubbles are stable. Sex also declines.
  • nitrogen-containing polyoxyalkylene compound represented by the general formula (1) described above examples include decylamine- (poly) oxyethylene / polyoxypropylene adduct and undecylamine- (poly) oxyethylene / polyoxy.
  • Propropylene adduct dodecylamine- (poly) oxyethylene / polyoxypropylene adduct, tridecylamine- (poly) oxyethylene / polyoxypropylene adduct, tetradecylamine- (poly) oxyethylene / polyoxypropylene adduct , Pentadecylamine- (poly) oxyethylene / polyoxypropylene adduct, hexadecylamine- (poly) oxyethylene / polyoxypropylene adduct, 2-hexyldecylamine- (poly) oxyethylene / polyoxypropylene adduct , Heptadecylamine- (poly) oxyethylene / polyoxypropylene adduct, octadecylamine- (poly) oxyethylene / polyoxypropylene adduct, nonadecilamine- (poly) oxyethylene / polyoxypropy
  • tetradecylamine- (poly) oxyethylene / polyoxypropylene adduct pentadecylamine- (poly) oxyethylene / polyoxypropylene adduct, hexadecylamine- (poly) oxyethylene / polyoxypropylene adduct , 2-Hexyldecylamine- (poly) oxyethylene / polyoxypropylene adduct, heptadecylamine- (poly) oxyethylene / polyoxypropylene adduct, octadecylamine- (poly) oxyethylene / polyoxypropylene adduct, Tetradecenylamine- (poly) oxyethylene / polyoxypropylene adduct, pentadecenylamine- (poly) oxyethylene / polyoxypropylene adduct, hexadecenylamine- (poly) oxyethylene /
  • the method for producing the nitrogen-containing polyoxyalkylene compound represented by the general formula (1) is not particularly limited.
  • a method for producing a nitrogen-containing polyoxyalkylene compound represented by the general formula (1) by adding a specific oxyalkylene to a specific alkylamine or a specific alkenylamine can be mentioned.
  • a catalyst when adding oxyalkylene, a catalyst can be used, and as the catalyst, alkali metals and alkaline earth metals, their hydroxides, alkali metal hydrides, alkali catalysts such as alcoholate, and Lewis acids are used. It is possible to use a catalyst or a composite metal catalyst, and preferably an alkaline catalyst can be used.
  • alkaline catalysts examples include sodium, potassium, sodium potassium amalgam, sodium hydroxide, potassium hydroxide, sodium hydride, sodium methoxide, potassium methoxide, sodium ethoxide, potassium ethoxide, potassium butoxide and the like. It can be, preferably sodium hydroxide, potassium hydroxide, sodium methoxide, potassium methoxide, potassium butoxide.
  • Lewis acid catalysts examples include tin tetrachloride, boron trifluoride, boron trifluoride diethyl ether complex, boron trifluoride din-butyl ether complex, boron trifluoride tetrahydrofuran complex, and boron trifluoride phenol.
  • Examples thereof include a complex, a boron trifluoride compound such as a boron trifluoride acetate complex, and the like.
  • catalysts can be neutralized and removed after the addition reaction, while they may be contained as they are.
  • the catalyst can be carried out by a well-known method.
  • the defoaming agent for a hydraulic composition according to the present invention may consist only of a nitrogen-containing polyoxyalkylene compound represented by the general formula (1), as long as the effects of the present invention are not impaired. It may contain any component of. Examples of such optional components include antioxidants, other defoaming agents such as polyoxyalkylene alkyl ether, and diluents such as water and alcohol.
  • the defoaming agent for a hydraulic composition according to the present invention is used for a hydraulic composition containing a hydraulic binder such as civil engineering, construction, and secondary products.
  • the defoaming agent for hydraulic composition according to the present invention can be used in combination with an existing admixture.
  • an admixture include an AE water reducing agent, a high-performance AE water reducing agent, an AE agent, a defoaming agent, a shrinkage reducing agent, a thickener, a curing accelerator and the like.
  • the pH of the admixture used in combination with the defoaming agent for hydraulic composition according to the present invention is preferably 8 or less from the viewpoint of obtaining excellent compatibility with the defoaming agent for hydraulic composition. It is more preferably 6 or less, and further preferably 6 or less.
  • Examples of the water-hardening binder used for preparing the water-hardening composition to which the defoaming agent for the water-hardening composition according to the present invention is used include ordinary Portland cement, early-strength Portland cement, moderate heat Portland cement, low heat Portland cement and the like.
  • various mixed cements such as blast furnace cement, fly ash cement, and silica fume cement can be mentioned.
  • various admixtures such as blast furnace slag fine powder, fly ash, and silica fume may be used alone or in combination with the various cements shown above.
  • fine aggregate and coarse aggregate can be mentioned as fine aggregate
  • river sand, mountain sand, sea sand, crushed sand, slag fine aggregate and the like can be mentioned as fine aggregate
  • coarse aggregate include river gravel, crushed stone, lightweight aggregate, hydraulic slag, and recycled aggregate. These may be used alone or in combination.
  • the ratio of the water binder of the hydraulic composition is not particularly limited. It exhibits a high effect at the ratio of commonly used water binders.
  • the hydraulic composition of the present invention preferably contains the defoaming agent for the hydraulic composition of the present invention in a proportion of 0.0001 to 0.1 parts by mass per 100 parts by mass of the hydraulic binder.
  • the defoaming agent for a hydraulic composition of the present invention is contained in such a ratio, high defoaming property, bubble stability, and high compatibility with an admixture to be used in combination can be exhibited.
  • the number of moles added to the oxyalkylene group represents the average number of moles added, and unless otherwise specified, "parts” means parts by mass and “%” means parts by mass. ..
  • Test Category 1 (Synthesis of Defoamer for Hydraulic Composition) -Synthesis of antifoaming agent (A-1) for hydraulic composition
  • An autoclave was charged with 1347.6 parts of octadecylamine, and the inside of the autoclave was sufficiently replaced with nitrogen.
  • 660.8 parts of ethylene oxide was press-fitted while reacting at 0.4 MPa, and then aged at the same temperature for 0.5 hours.
  • 12 parts of potassium hydroxide powder was added as a catalyst, and then the inside of the autoclave was sufficiently replaced with nitrogen. The temperature was maintained at 150 ° C.
  • reaction system was cooled to 0 ° C., a solution prepared by dissolving 270 parts of octadecylamine in 630 parts of ethanol was gradually added dropwise, and after the addition was completed, the temperature was raised to 40 ° C., aged for 2 hours, purified, and octadecylamine was purified.
  • -A methoxypolyoxyethylene (4 mol) -polyoxypropylene (50 mol) adduct (A-7) was obtained.
  • AR-6 octadecyl alcohol-polyoxyethylene (4 mol) -polyoxypropylene (40 mol) adduct
  • AR-6 was a defoaming agent for hydraulic compositions used as a comparative example.
  • AR-7 was synthesized.
  • AR-7 was a defoaming agent for hydraulic compositions used as a comparative example.
  • AR-8 antifoaming agent for hydraulic composition
  • 750.9 parts of triethylene glycol and 4.7 parts of potassium hydroxide powder were charged in an autoclave, and the inside of the autoclave was sufficiently replaced with nitrogen.
  • 8715 parts of propylene oxide was press-fitted while reacting at 0.4 MPa, and then aged at the same temperature for 1 hour to complete the reaction.
  • the catalyst was removed to obtain a polyoxyethylene (3 mol) -polyoxypropylene (30 mol) condensate (AR-8).
  • AR-8 was a defoaming agent for hydraulic compositions used as a comparative example.
  • AR-6 Octadecyl alcohol-polyoxyethylene (4 mol) / polyoxypropylene (40 mol) adduct
  • AR-7 Dodecyl alcohol-polyoxyethylene (3 mol) / polyoxypropylene (60 mol) adduct
  • AR- 8 Polyoxyethylene (3 mol) / polyoxypropylene (30 mol) adduct
  • Test category 2 Synthesis of polycarboxylic acid-based water reducing agent as an admixture
  • ⁇ - (3-methyl-3-butenyl) - ⁇ -hydroxy-poly (45 mol) oxyethylene was charged into the reaction vessel, and the atmosphere was nitrogen. It was replaced and gradually warmed with stirring.
  • the temperature of the reaction system was kept at 70 ° C. in a warm water bath to stabilize the temperature. Then, acrylic acid was added dropwise over 3 hours.
  • an aqueous solution prepared by dissolving thioglycolic acid and L-ascorbic acid in water and a 5% hydrogen peroxide solution were added dropwise over 3 hours to initiate a radical polymerization reaction.
  • water and a 30% aqueous sodium hydroxide solution were added to the obtained copolymer to obtain a polycarboxylic acid-based water reducing agent (B-1) having a solid content concentration of 25%.
  • this polycarboxylic acid-based water reducing agent was analyzed, the mass average molecular weight was 42000 and the pH was 3.6. The mass average molecular weight of the copolymer was measured by gel permeation chromatography.
  • Ion-exchanged water was added to 1 g of the polycarboxylic acid-based water reducing agent to make 100 g, which was measured at 20 ° C. with a pH meter (manufactured by HORIBA).
  • Table 2 shows the contents of the admixture used.
  • B-4 Polycarboxylic acid compound (High-performance AE water reducing agent for concrete made by Takemoto Oil & Fat, trade name Chupol HP-11)
  • B-5 Complex of modified lignin sulfonic acid compound and polycarboxylic acid compound (AE water reducing agent for concrete made by Takemoto Oil & Fat, trade name Chupol EX60)
  • Test Category 3 (Preparation of admixture composition for evaluation) Defoamers (A-1) to (A-17) and (AR-1) to (AR-8) for hydraulic compositions shown in Table 1 and admixtures (B-1) to (B-1) to (AR-8) shown in Table 2.
  • B-5) was mixed and stirred to prepare an admixture composition for evaluation (125 samples in total). The mixing ratio was 99.5% by mass for the admixtures (B-1) to (B-4), 0.5% by mass for the defoaming agent for the hydraulic composition, and 0.5% by mass for the admixture (B-5). The admixture was 99.7% by mass and the antifoaming agent for hydraulic composition was 0.3% by mass.
  • Test Category 4 (Preparation of Concrete Composition) -Examples 1 to 17 and Comparative Examples 1 to 9 Using a forced twin-screw mixer with a capacity of 60 liters, the concrete compositions of each example were prepared by kneading for 90 seconds according to the contents shown in Table 3. The temperature of the prepared concrete composition was 20 ⁇ 3 ° C.
  • AE-300 (trade name made by Takemoto Oil & Fat) was used as an air amount adjusting agent, and the air amount was 7.0 ⁇ .
  • the amount of the admixture and the admixture composition prepared in Test Category 3 for the concrete composition of each example was adjusted to 1.0%, the slump measured according to JIS A 1150 to 15 ⁇ 2.5 cm. It was constant.
  • Test Category 5 (Test of concrete composition and evaluation of defoamer for hydraulic composition) For each of the prepared concrete compositions, the amount of air was measured as follows, and the compatibility, defoaming property, and bubble stability of the defoaming agent for hydraulic composition with respect to the admixture were evaluated as follows. The results are summarized in Table 4.
  • Air volume (% by volume): The concrete composition immediately after kneading was measured in accordance with JIS A 1128.
  • the amount of air I (% by volume) measured using the above was compared, and the defoaming property was evaluated according to the following criteria.
  • C Bad (the value obtained by subtracting the air volume I from the air volume III is less than 2.0)
  • -Able stability For a concrete composition prepared by using an admixture composition immediately after mixing a defoaming agent for a hydraulic composition, the state of bubbles was visually observed and the bubble stability was evaluated according to the following criteria. .. S: Very good (almost no surface bubble rupture is confirmed) A: Good (very slight rupture of surface bubbles is confirmed) B: Yes (slight bubble rupture of surface bubbles is confirmed) C: Bad
  • AR-6 Octadecyl alcohol-polyoxyethylene (4 mol) / polyoxypropylene (40 mol) adduct
  • AR-7 Dodecyl alcohol-polyoxyethylene (3 mol) / polyoxypropylene (60 mol) adduct
  • AR- 8 Polyoxyethylene (3 mol) / polyoxypropylene (30 mol) adduct
  • the admixture for hydraulic composition of the present invention can be used as a defoaming agent when preparing a hydraulic composition.

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Abstract

Grâce à la présente invention, il est possible de fournir un agent antimousse pour une composition hydraulique, ayant une compatibilité élevée avec un mélange ainsi qu'une excellente capacité de démoussage et une excellente stabilité de mousse, et une composition hydraulique.　La présente invention concerne un agent antimousse pour une composition hydraulique, l'agent antimousse contenant un composé polyoxyalkylène spécifique contenant de l'azote.
PCT/JP2019/014477 2019-04-01 2019-04-01 Agent antimousse pour composition hydraulique, et composition hydraulique WO2020202435A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
MYPI2021005133A MY197652A (en) 2019-04-01 2019-04-01 Defoaming agent for hydraulic composition, and hydraulic composition
CN201980093991.3A CN113557218A (zh) 2019-04-01 2019-04-01 水硬性组合物用消泡剂和水硬性组合物
PCT/JP2019/014477 WO2020202435A1 (fr) 2019-04-01 2019-04-01 Agent antimousse pour composition hydraulique, et composition hydraulique
JP2021511804A JP7191416B2 (ja) 2019-04-01 2019-04-01 水硬性組成物用消泡剤及び水硬性組成物
TW108114938A TW202037635A (zh) 2019-04-01 2019-04-29 水硬性組合物用消泡劑及水硬性組合物

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PCT/JP2019/014477 WO2020202435A1 (fr) 2019-04-01 2019-04-01 Agent antimousse pour composition hydraulique, et composition hydraulique

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7012313B1 (ja) * 2020-09-28 2022-01-28 竹本油脂株式会社 水硬性組成物用消泡剤、これを含有する水性液及び水硬性組成物

Citations (4)

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