WO2021140541A1 - Additive for water-curable composition - Google Patents
Additive for water-curable composition Download PDFInfo
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- WO2021140541A1 WO2021140541A1 PCT/JP2020/000061 JP2020000061W WO2021140541A1 WO 2021140541 A1 WO2021140541 A1 WO 2021140541A1 JP 2020000061 W JP2020000061 W JP 2020000061W WO 2021140541 A1 WO2021140541 A1 WO 2021140541A1
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- Prior art keywords
- group
- additive
- carbon atoms
- acid
- rosin
- Prior art date
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- 239000000654 additive Substances 0.000 title claims abstract description 44
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- 125000000400 lauroyl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 125000000628 margaroyl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002960 margaryl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 125000001419 myristoyl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- KYTZHLUVELPASH-UHFFFAOYSA-N naphthalene-1,2-dicarboxylic acid Chemical compound C1=CC=CC2=C(C(O)=O)C(C(=O)O)=CC=C21 KYTZHLUVELPASH-UHFFFAOYSA-N 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 1
- 125000001402 nonanoyl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002801 octanoyl group Chemical group C(CCCCCCC)(=O)* 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 125000001312 palmitoyl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002958 pentadecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000001501 propionyl group Chemical group O=C([*])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001256 steam distillation Methods 0.000 description 1
- 125000003696 stearoyl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 239000013077 target material Substances 0.000 description 1
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- 125000000297 undecanoyl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000003774 valeryl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000000341 volatile oil Substances 0.000 description 1
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
- C04B24/34—Natural resins, e.g. rosin
Definitions
- the present invention relates to additives for hydraulic compositions. More specifically, the present invention relates to an additive for a hydraulic composition that improves the pumping property of the hydraulic composition.
- Hydraulic compositions such as concrete are widely used for civil engineering and construction. At the time of use, such a hydraulic composition is prepared as a hydraulic composition kneaded product by mixing and stirring cement, water, fine aggregate, coarse aggregate, admixture and the like.
- a method of transporting the prepared hydraulic composition kneaded product to the casting position a method of pumping using a concrete pump is adopted.
- a transport pipe is arranged between the casting position and the concrete pump to form a flow path for the hydraulic composition kneaded material, and the hydraulic composition kneaded material in the transport pipe is subjected to the pressure generated from the concrete pump. It is pumped to the casting position.
- the concrete admixture shown in Patent Document 2 enables pumping by adding a biogum-based thickener to concrete using a lightweight aggregate to increase the viscosity.
- a biogum-based thickener to concrete using a lightweight aggregate to increase the viscosity.
- the thickener is not easy to adjust because the degree of effect varies sensitively depending on the target material. That is, if even a small amount is added in excess of the optimum amount, the pumping property will be lowered. Further, the thickener has a problem that its handling is troublesome and its workability is inferior.
- the additive for hydraulic composition of the present invention can improve the pumping property at the time of pumping by a concrete pump, can obtain a high effect with a small amount, and can also obtain a high effect of the hydraulic composition.
- An object of the present invention is to provide an additive for a hydraulic composition that does not affect the slump and the amount of air.
- an additive for a hydraulic composition containing a specific rosin polyoxyalkylene adduct is particularly suitable. According to the present invention, the following additives for hydraulic composition are provided.
- R 1 indicates an acyl residue of rosin or a hydrogen atom
- R 2 is a hydrogen atom, an acyl residue of rosin, an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, shows the polyhydric alcohol residue obtained by removing hydroxyl groups from an acyl residue of a polyhydric carboxylic acid of the acyl group or 2 to 20 carbon atoms having 1 to 20 carbon atoms having 3 to 20 carbon atoms (provided that the R 1, at least one When one represents a hydrogen atom, R 2 represents a substituent other than the hydrogen atom), AO represents an oxyalkylene group having 2 to 18 carbon atoms, and m is a number from 1 to 200, n is
- R 2 in the general formula (1) is a hydrogen atom, an acyl residue of rosin, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or a number of 3-6 carbon atoms
- the pumping property at the time of pumping by a concrete pump can be improved, and a high effect can be obtained with a small amount (that is, the pumping property can be improved with a small amount of addition). It can be improved) and has the effect of not affecting the slump and air volume of the hydraulic composition.
- the additive for hydraulic composition of the present invention contains a compound represented by the following general formula (1). This compound is also referred to as a rosin polyoxyalkylene adduct.
- R 1 in the general formula (1) is an acyl residue or a hydrogen atom of rosin.
- rosin refers to a diterpene acid-based compound called a resin acid (loginic acid).
- resin acid loginic acid
- examples of such rosins include natural rosins, modified rosins, and polymerized rosins.
- Natural rosin is a mixture of resin acids present in the residue obtained by distilling volatile substances such as essential oils from resin oil obtained from Pinaceae plants, and is classified into gum rosin, wood rosin, and tall oil rosin according to the production method. Will be done.
- Gamrosin is obtained by cutting a pine tree, filtering and refining the raw pine fat flowing out of it, and removing turpentine oil by steam distillation.
- Wood rosin is obtained by solvent-extracting pine stump chips.
- Tall oil rosin is obtained by distilling and refining crude tall oil produced as a by-product in the process of producing pulp from pine wood by the kraft pulp method.
- Login contains abietic acid as the main component resin acid, and neo-avietic acid, dehydroabietic acid, tetrahydroabietic acid, palastolic acid, pimalic acid, isopimalic acid, sandalacopimaric acid, levopimal as the resin acids of other components. Contains acids and the like.
- the modified rosin refers to a modified natural rosin.
- the natural rosin is hydrogenated using a noble metal catalyst such as a nickel catalyst, a platinum catalyst, or a palladium catalyst at high pressure to form a double bond in the molecule.
- a noble metal catalyst such as a nickel catalyst, a platinum catalyst, or a palladium catalyst at high pressure to form a double bond in the molecule.
- examples thereof include hydrogenated rosin in which hydrogenated rosin is eliminated or reduced, and disproportionated rosin in which unstable conjugated double bonds in the molecule are eliminated by heating natural rosin at a high temperature in the presence of a noble metal catalyst or a halogen catalyst.
- the polymerized rosin is a reaction between natural rosins or modified rosins, and refers to these dimers and trimers.
- rosin natural rosin is preferable from the viewpoint of easy availability.
- a natural rosin gum rosin is more preferable.
- Rosin is generally treated as a mixture of various compounds, and the amount of carboxylic acid is quantified by measuring the acid value. The acid value is determined by measuring according to the Japanese Industrial Standards JIS K0070.
- AO is an oxyalkylene group having 2 to 18 carbon atoms.
- the oxyalkylene group having 2 to 18 carbon atoms include an oxyethylene group, an oxypropylene group, an oxybutylene group, an oxytetramethylene group, an oxystyrene group, an oxidedecylene group, an oxytetradecylene group and an oxyhexadecylene.
- Examples include a group, an oxyoctadecylene group and the like.
- an oxyalkylene group having 2 to 4 carbon atoms such as an oxyethylene group, an oxypropylene group, an oxybutylene group and an oxytetramethylene group is preferable, and an oxyalkylene group having 2 to 3 carbon atoms such as an oxyethylene group and an oxypropylene group is preferable.
- Groups are more preferred.
- the AO may be one type or two or more types, and in the case of two or more types, the oxyalkylene group may be in any form of a random adduct, a block adduct, or an alternating adduct.
- m represents the average number of added moles
- m is a number of 1 to 200, preferably a number of 1 to 150, and more preferably a number of 5 to 150.
- n represents the number of added moles, which is a number of 1 to 20, preferably 1 to 6.
- the oxyalkylene group having 2 carbon atoms in the AO is 50 mol% or more, preferably 80 mol% or more. It is more preferably 90 mol% or more. If the oxyalkylene group having 2 carbon atoms in the AO is less than 50 mol%, sufficient pumping property cannot be obtained.
- R 1 is an acyl residue of rosin.
- n is 2 or more, of R 1, at least one is an acyl residue of rosin.
- R 2 is a hydroxyl group derived from a hydrogen atom, an acyl residue of rosin, an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, and a polyhydric alcohol having 3 to 20 carbon atoms.
- the removed residue is an acyl group having 1 to 20 carbon atoms or an acyl residue of a carboxylic acid having 2 to 20 carbon atoms.
- R 1 represents a hydrogen atom
- R 2 is a substituent other than the hydrogen atom.
- alkyl group having 1 to 20 carbon atoms examples include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a tert-butyl group, an n-hexyl group and an n-octyl group.
- Examples thereof include a linear or branched alkyl group such as a decyl group, an undecyl group, a dodecyl group, a tridecyl group, a tetradecyl group, a pentadecyl group, a hexadecyl group, a heptadecyl group, an octadecyl group, a nonadecil group and an icosyl group.
- a linear or branched alkyl group such as a decyl group, an undecyl group, a dodecyl group, a tridecyl group, a tetradecyl group, a pentadecyl group, a hexadecyl group, a heptadecyl group, an octadecyl group, a nonadecil group and an icosyl group.
- alkyl groups having 1 to 4 carbon atoms such as a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group and a tert-butyl group are preferable.
- alkenyl group having 2 to 20 carbon atoms examples include an ethenyl group, an n-propenyl group, an n-butenyl group, an n-pentenyl group, an n-hexenyl group, an n-heptenyl group, an n-octenyl group and an n-nonel group.
- N-decenyl group N-decenyl group, n-undecenyl group, n-dodecenyl group, n-tridecenyl group, n-tetradecenyl group, n-pentadecenyl group, n-hexadecenyl group, n-heptadecenyl group, n-octadecenyl group, n-nonadeceenyl group , N-Icosenyl group and the like.
- an alkenyl group having 2 to 5 carbon atoms such as an ethenyl group, an n-propenyl group, an n-butenyl group, and an n-pentenyl group, is preferable.
- residue obtained by removing the hydroxyl group from the polyhydric alcohol having 3 to 20 carbon atoms for example, the residue obtained by removing the hydroxyl group from the polyhydric alcohol having 3 to 20 carbon atoms such as glycerin, trimethylolpropane, pentaerythritol, sorbitol and sorbitan.
- the group is mentioned.
- residues obtained by removing hydroxyl groups from polyhydric alcohols having 3 to 6 carbon atoms such as glycerin, trimethylolpropane, pentaerythritol, sorbitol, and sorbitan, are preferable.
- acyl group having 1 to 20 carbon atoms examples include a formyl group, an acetyl group, a propionyl group, a butyryl group, an isobutyryl group, a valeryl group, a hexanoyl group, a heptanoil group, an octanoyl group, a nonanoyl group, a decanoyyl group, an undecanoyl group and a dodecanoyl group.
- acyl residue of the polyvalent carboxylic acid having 2 to 20 carbon atoms examples include oxalic acid, malonic acid, dipropylmalonic acid, succinic acid, 2,2-dimethylsuccinic acid, glutaric acid, and 2-methylglutaric acid.
- Dicyclohexyl-4,4'-dicarboxylic acid succinoic acid and other alicyclic polyvalent carboxylic acids having 6 to 20 carbon atoms minus hydroxyl groups, terephthalic acid, isophthalic acid, 2-methylterephthalic acid, 4 , 4'-stillbenzicarboxylic acid, naphthalenedicarboxylic acid, 4,4'-biphenyldicarboxylic acid, orthophthalic acid, diphenoxyetanedicarboxylic acid, diphenyletherdicarboxylic acid, diphenylsulfonedicarboxylic acid, etc.
- Examples thereof include an acyl residue obtained by removing a hydroxyl group from a carboxylic acid. These acyl residues may be linear or branched.
- the method for producing the compound represented by the general formula (1) is not particularly limited.
- a catalyst or the like for rosin which is a mixture of resin acids such as abietic acid, neoavietic acid, dehydroabietic acid, tetrahydroabietic acid, palastolic acid, pimaric acid, isopimalic acid, sandalacopimalic acid, and levopimalic acid.
- An alkylene oxide is added by a conventional method to produce a rosin polyoxyalkylene adduct represented by the general formula (1), or an alkylene oxide is added to R 2 in advance by using a catalyst or the like.
- a method for producing a rosin polyoxyalkylene adduct represented by the general formula (1) by esterifying with rosin can be mentioned.
- the additive for a hydraulic composition according to the present invention is used for a hydraulic composition containing a hydraulic binder used in civil engineering, construction and the like.
- the additive for hydraulic composition according to the present invention can be used in combination with an existing dispersant.
- a dispersant include a lignin sulfonic acid-based dispersant, a polycarboxylic acid-based dispersant, a naphthalene sulfonic acid-based dispersant, an amino sulfonic acid-based dispersant, and the like.
- at least one dispersant selected from the group consisting of a lignin sulfonic acid-based dispersant and a polycarboxylic acid-based dispersant is preferable from the viewpoint of ensuring dispersion retention.
- the additive for hydraulic composition according to the present invention can be further used in combination with an existing admixture as long as it does not impair the pumping property and does not affect the slump and the amount of air.
- 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.
- Examples of the hydraulic binder used for preparing the hydraulic composition to which the additive for the hydraulic composition according to the present invention is used include various Portland cements such as ordinary Portland cement, early-strength Portland cement, and moderate heat Portland cement.
- 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 in combination with the various cements shown above.
- examples of the aggregate include fine aggregate and coarse aggregate.
- examples of the fine aggregate include river sand, mountain sand, sea sand, crushed sand, slag fine aggregate, and the like
- examples of the coarse aggregate include river gravel, crushed stone, and lightweight aggregate.
- the ratio of the water binder of the hydraulic composition is not particularly limited. It exhibits a high effect in the ratio of commonly used water binders.
- the additive for a water-hard composition according to the present invention is preferably blended in a proportion of 0.00001 to 1 part by mass, preferably 0.0001 to 0.4 parts by mass, per 100 parts by mass of the water-hard binder. It is more preferable that the mixture is blended in a proportion of 0.0005 to 0.1 parts by mass.
- Test category 1 (Synthesis of compound represented by general formula (1)) -Synthesis of compound (A-1)
- X grade (acid value: 171 mgKOH / g) of "gamrosin” produced in the People's Republic of China (hereinafter simply referred to as "produced in China") was 626.
- 9 g and 2.0 g of potassium hydroxide were charged, heated to 120 ° C., and dehydrated under reduced pressure while stirring for 1 hour.
- the pressure was returned to normal pressure with nitrogen, then 1264 g of ethylene oxide was press-fitted under the same conditions at 150 to 160 ° C., and then 107 g of propylene oxide was press-fitted under the same conditions, and the mixture was aged at the same temperature for 1 hour. Then, the mixture was cooled, 20 g of an adsorbent (trade name: Kyoward 600 manufactured by Kyowa Kagaku Kogyo Co., Ltd.) was added, dehydrated under reduced pressure at 120 ° C., and then pressure filtered to obtain compound (A-1). ..
- an adsorbent trade name: Kyoward 600 manufactured by Kyowa Kagaku Kogyo Co., Ltd.
- R-1 and R-2 are shown below. R-1 and R-2 are used as they are.
- R-1 X grade of "Gamrosin” from China
- R-2 Polyethylene glycol as a reagent (molecular weight 1000)
- Test Category 2 (Preparation of Concrete Composition) -Examples 1 to 13 and Comparative Examples 1 to 6 Using a forced twin-screw mixer with a capacity of 60 liters, kneading was performed for 90 seconds with the contents shown in Table 2 to prepare each concrete composition shown in Table 3. For each concrete composition, the target air amount was 4.5 ⁇ 1.5% and the target slump was 18 ⁇ 1 cm. In Example 13 and Comparative Example 6, the mixture was similarly kneaded using a forced twin-screw mixer having a capacity of 2.0 m 3. The temperature of the concrete composition was 20 ° C.
- Water reducing agent AE water reducing agent standard type I (high-performance type) Tupole EX60 (manufactured by Takemoto Oil & Fat Co., Ltd., a complex of a modified lignin sulfonic acid compound and a polycarboxylic acid-based compound) is used at 1.0% based on the cement mass.
- Defoamer AFK-2 (manufactured by Takemoto Oil & Fat Co., Ltd.) is used at 0.0005% of the cement mass
- AE agent: AE-300 (manufactured by Takemoto Oil & Fat Co., Ltd.) is used at 0.0015% of the cement mass
- Water reducing agent High-performance AE water reducing agent Standard type I (high-performance type) Chupol HP-8 (manufactured by Takemoto Oil & Fat Co., Ltd., polycarboxylic acid copolymer) is used at 0.7% of the cement mass Defoaming agent: AFK- 2 (manufactured by Takemoto Oil & Fat Co., Ltd.) 0.0003% of the cement mass AE agent: AE-200 (manufactured by Takemoto Oil & Fat Co., Ltd.) 0.0002% of cement mass
- Water reducing agent AE water reducing agent Delayed type I (high-performance type) Seekament JR (manufactured by Nippon Seeka Co., Ltd., modified polycarboxylic acid polyether polymer and modified polyol) 1.3% of cement mass Defoamer: AFK-2 (manufactured by Takemoto Oil & Fat Co., Ltd.) 0.0005% of cement mass AE agent: Master Air 202 (manufactured by BASF Japan, modified rosin compound-based anionic surfactant) at 0.005% of the cement mass
- Test category 3 (testing and evaluation of concrete composition) For each of the prepared concrete compositions, the air volume, slump, and O-funnel flow time were measured as follows, and the results are summarized in Table 3. In Example 13 and Comparative Example 6, the pump pressure was also measured.
- the hydraulic composition obtained by the present invention improves the pumping property of the obtained hydraulic composition and has a small effect on the slump and the amount of air. It was confirmed that the additive for use can be provided. In Example 13, it was confirmed that the pump pumping pressure at the time of discharging 20 m 3 / hour decreased and the pump pumping property was actually improved as compared with the condition without the additive of Comparative Example 6. ..
- Comparative Examples 1, 4 and 6 in which the additive for the hydraulic composition was not blended, it was confirmed that the O-funnel flow time could not be reduced. Further, in Comparative Examples 2 and 5, a so-called AE agent, which is a compound having no oxyalkylene group, was used, and due to the effect, the pumping property was good, but the amount of air increased. Further, in Comparative Example 3, it was an example in which polyethylene glycol was used as the compound, and in this case, it was confirmed that the O funnel flow time could not be reduced.
- the additive for hydraulic composition of the present invention can be used as an additive when preparing a hydraulic composition.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Polyethers (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The present invention can provide an additive for a water-curable composition. The additive can improve the pumping performance of a concrete pump performing a pumping operation, can provide good results even if only a small amount is used, and does not affect the slump or air entrainment in a water-curable composition. This additive for a water-curable composition contains a specific rosin polyoxyalkylene adduct.
Description
本発明は、水硬性組成物用添加剤に関する。更に詳しくは、水硬性組成物のポンプ圧送性を改善する水硬性組成物用添加剤に関する。
The present invention relates to additives for hydraulic compositions. More specifically, the present invention relates to an additive for a hydraulic composition that improves the pumping property of the hydraulic composition.
コンクリート等の水硬性組成物は、土木用、建築用として広範囲に使用されている。このような水硬性組成物は、使用に際し、セメント、水、細骨材、粗骨材及び混和剤等を混合攪拌し、水硬性組成物混練物として調製される。
Hydraulic compositions such as concrete are widely used for civil engineering and construction. At the time of use, such a hydraulic composition is prepared as a hydraulic composition kneaded product by mixing and stirring cement, water, fine aggregate, coarse aggregate, admixture and the like.
施工現場において、調製された水硬性組成物混練物を打設位置まで搬送する方法としては、コンクリートポンプを使用して圧送する方法が採用されている。この方法は、打設位置とコンクリートポンプとの間に輸送管を配置して水硬性組成物混練物の流路を形成し、輸送管内の水硬性組成物混練物をコンクリートポンプから生み出される圧力によって打設位置まで圧送するものである。
At the construction site, as a method of transporting the prepared hydraulic composition kneaded product to the casting position, a method of pumping using a concrete pump is adopted. In this method, a transport pipe is arranged between the casting position and the concrete pump to form a flow path for the hydraulic composition kneaded material, and the hydraulic composition kneaded material in the transport pipe is subjected to the pressure generated from the concrete pump. It is pumped to the casting position.
しかしながら、コンクリートポンプを使用して圧送する方法では、輸送管内において、水硬性組成物混練物と輸送管表面の抵抗が大きくなり、吐出不良や輸送管内での詰まりが生じることがあった。
However, in the method of pumping using a concrete pump, the resistance between the hydraulic composition kneaded product and the surface of the transport pipe increases in the transport pipe, which may cause discharge failure or clogging in the transport pipe.
従来、コンクリートポンプを使用して水硬性組成物混練物を圧送する際、上記のような吐出不良や輸送管内での詰まりを防止してポンプ圧送性を改善するため、リグニンスルホン酸塩系AE減水剤とアミノスルホン酸樹脂とが配合された混和剤を水硬性組成物に配合することが提案されている(例えば、特許文献1参照)。また、ポンプ圧送が困難であるとされている軽量骨材を使用したコンクリートの圧送においては、バイオガム系増粘剤を使用することが提案されている(例えば、特許文献2参照)。
Conventionally, when a hydraulic composition kneaded product is pumped using a concrete pump, the lignin sulfonate-based AE water reduction is performed in order to prevent the above-mentioned discharge failure and clogging in the transport pipe and improve the pump pumpability. It has been proposed to add an admixture containing an agent and an aminosulfonic acid resin to a hydraulic composition (see, for example, Patent Document 1). Further, it has been proposed to use a biogum-based thickener in the pumping of concrete using a lightweight aggregate, which is considered to be difficult to pump (see, for example, Patent Document 2).
特許文献1に示される混和剤を使用すると、ポンプ圧送性はある程度改善される。しかしながら、この混和剤に配合されたリグニンスルホン酸塩系AE減水剤とアミノスルホン酸樹脂は、いずれも、セメント用減水剤として使用されるものであるので、対象とするコンクリートによってはスランプを調整しづらいといった問題がある。
When the admixture shown in Patent Document 1 is used, the pumping property is improved to some extent. However, since both the lignin sulfonate-based AE water reducing agent and the aminosulfonic acid resin contained in this admixture are used as water reducing agents for cement, the slump may be adjusted depending on the target concrete. There is a problem that it is difficult.
また、特許文献2に示されるコンクリート混和剤は、軽量骨材を使用したコンクリートにバイオガム系増粘剤を添加して粘性を高めることにより、ポンプ圧送を可能にしている。しかし、土木工事で想定される相当の長距離での圧送が必要な場合、ある程度まで粘性を高める必要があるが、粘性を高めたことによりポンプ圧送性が低下するといった問題がある。また、増粘剤は、対象とする材料によっては、敏感に効果の程度が変動するため、その調整が容易ではない。つまり、少しでも最適量より過剰に添加すると逆にポンプ圧送性が低下する。更に、増粘剤はそのハンドリングが煩わしく作業性に劣るという問題がある。
Further, the concrete admixture shown in Patent Document 2 enables pumping by adding a biogum-based thickener to concrete using a lightweight aggregate to increase the viscosity. However, when pumping over a considerably long distance, which is expected in civil engineering work, is required, it is necessary to increase the viscosity to some extent, but there is a problem that the pumping property is lowered due to the increased viscosity. Further, the thickener is not easy to adjust because the degree of effect varies sensitively depending on the target material. That is, if even a small amount is added in excess of the optimum amount, the pumping property will be lowered. Further, the thickener has a problem that its handling is troublesome and its workability is inferior.
上記事情に鑑み、本発明の水硬性組成物用添加剤は、コンクリートポンプによる圧送時におけるポンプ圧送性を向上させることができ、少量で高い効果を得ることができ、また、水硬性組成物のスランプと空気量に影響を与えない水硬性組成物用添加剤の提供を課題とするものである。
In view of the above circumstances, the additive for hydraulic composition of the present invention can improve the pumping property at the time of pumping by a concrete pump, can obtain a high effect with a small amount, and can also obtain a high effect of the hydraulic composition. An object of the present invention is to provide an additive for a hydraulic composition that does not affect the slump and the amount of air.
本発明者らは、前記の課題を解決すべく鋭意研究した結果、特定のロジンポリオキシアルキレン付加物を含有する水硬性組成物用添加剤が特に好適であることを見出した。本発明によれば、以下の水硬性組成物用添加剤が提供される。
As a result of diligent research to solve the above problems, the present inventors have found that an additive for a hydraulic composition containing a specific rosin polyoxyalkylene adduct is particularly suitable. According to the present invention, the following additives for hydraulic composition are provided.
[1] 下記一般式(1)で表される化合物を含有する水硬性組成物用添加剤。
[1] An additive for a hydraulic composition containing a compound represented by the following general formula (1).
mは1~200の数であって、nは1~20の数であって、かつ、前記m、nが、m×n=1~200となる関係を満たす数であり、AOの内、炭素数2のオキシアルキレン基が50モル%以上である。)
m is a number from 1 to 200, n is a number from 1 to 20, and m and n satisfy the relationship of m × n = 1 to 200. The oxyalkylene group having 2 carbon atoms is 50 mol% or more. )
[2] 前記一般式(1)中のAOは、炭素数2~4のオキシアルキレン基である、前記[1]に記載の水硬性組成物用添加剤。
[2] The additive for a hydraulic composition according to the above [1], wherein the AO in the general formula (1) is an oxyalkylene group having 2 to 4 carbon atoms.
[3] 前記一般式(1)中のAOは、炭素数2~3のオキシアルキレン基である、前記[1]または[2]に記載の水硬性組成物用添加剤。
[3] The additive for a hydraulic composition according to the above [1] or [2], wherein the AO in the general formula (1) is an oxyalkylene group having 2 to 3 carbon atoms.
[4] 前記一般式(1)中のnは、1~6の数であって、かつ、前記m、nが、m×n=1~150となる関係を満たす数である、前記[1]~[3]のいずれかに記載の水硬性組成物用添加剤。
[4] n in the general formula (1) is a number from 1 to 6, and m and n are numbers satisfying the relationship of m × n = 1 to 150. ] To [3]. The additive for a hydraulic composition.
[5] 前記一般式(1)中のR2は、水素原子、ロジンのアシル残基、炭素数1~4のアルキル基、炭素数2~5のアルケニル基、又は、炭素数3~6の多価アルコールから水酸基を除いた残基である、前記[1]~[4]のいずれかに記載の水硬性組成物用添加剤。
[5] R 2 in the general formula (1) is a hydrogen atom, an acyl residue of rosin, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or a number of 3-6 carbon atoms The additive for a water-hard composition according to any one of the above [1] to [4], which is a residue obtained by removing a hydroxyl group from a polyhydric alcohol.
[6] 前記ロジンが天然ロジンである、前記[1]~[5]のいずれかに記載の水硬性組成物用添加剤。
[6] The additive for a hydraulic composition according to any one of the above [1] to [5], wherein the rosin is a natural rosin.
[7] 前記天然ロジンがガムロジンである、前記[6]に記載の水硬性組成物用添加剤。
[7] The additive for a hydraulic composition according to the above [6], wherein the natural rosin is a gum rosin.
[8] 前記一般式(1)中の前記AOの内、炭素数2のオキシアルキレン基が90モル%以上である、前記[1]~[7]のいずれかに記載の水硬性組成物用添加剤。
[8] The hydraulic composition according to any one of the above [1] to [7], wherein the oxyalkylene group having 2 carbon atoms is 90 mol% or more in the AO in the general formula (1). Additive.
[9] 前記一般式(1)中の前記m、nが、m×n=10~100となる関係を満たす数である、前記[1]~[8]のいずれかに記載の水硬性組成物用添加剤。
[9] The hydraulic composition according to any one of [1] to [8], wherein m and n in the general formula (1) are numbers satisfying the relationship of m × n = 10 to 100. Additives for products.
[10] 分散剤を含有する、前記[1]~[9]のいずれかに記載の水硬性組成物用添加剤。
[10] The additive for a hydraulic composition according to any one of the above [1] to [9], which contains a dispersant.
[11] 前記分散剤が、リグニンスルホン酸系分散剤、及び、ポリカルボン酸系分散剤からなる群から選ばれる少なくとも1種である、前記[10]に記載の水硬性組成物用添加剤。
[11] The additive for a water-hard composition according to the above [10], wherein the dispersant is at least one selected from the group consisting of a lignin sulfonic acid-based dispersant and a polycarboxylic acid-based dispersant.
本発明の水硬性組成物用添加剤によれば、コンクリートポンプによる圧送時におけるポンプ圧送性を向上させることができ、少量で高い効果を得ることができ(即ち、少ない添加量でポンプ圧送性を向上させることができ)、また、水硬性組成物のスランプと空気量に影響を与えないという効果がある。
According to the additive for hydraulic composition of the present invention, the pumping property at the time of pumping by a concrete pump can be improved, and a high effect can be obtained with a small amount (that is, the pumping property can be improved with a small amount of addition). It can be improved) and has the effect of not affecting the slump and air volume of the hydraulic composition.
以下、本発明の実施形態について説明する。しかし、本発明は以下の実施形態に限定されるものではない。したがって、本発明の趣旨を逸脱しない範囲で、当業者の通常の知識に基づいて、以下の実施形態に対し適宜変更、改良等が加えられ得ることが理解されるべきである。なお、以下の実施例等において、別に記載しない限り、%は質量%を、また部は質量部を意味する。
Hereinafter, embodiments of the present invention will be described. However, the present invention is not limited to the following embodiments. Therefore, it should be understood that the following embodiments can be appropriately modified, improved, or the like based on the ordinary knowledge of those skilled in the art without departing from the spirit of the present invention. In the following examples and the like, unless otherwise specified,% means mass% and parts means parts by mass.
本発明の水硬性組成物用添加剤は、下記一般式(1)で表される化合物を含有する。この化合物は、ロジンポリオキシアルキレン付加物とも称される。
The additive for hydraulic composition of the present invention contains a compound represented by the following general formula (1). This compound is also referred to as a rosin polyoxyalkylene adduct.
一般式(1)中のR1は、ロジンのアシル残基又は水素原子である。ここで、ロジンとは、樹脂酸(ロジン酸)と称されるジテルペン酸系化合物をいう。このようなロジンとして、例えば、天然ロジン、変性ロジン、重合ロジンなどが挙げられる。
R 1 in the general formula (1) is an acyl residue or a hydrogen atom of rosin. Here, rosin refers to a diterpene acid-based compound called a resin acid (loginic acid). Examples of such rosins include natural rosins, modified rosins, and polymerized rosins.
天然ロジンは、マツ科植物から得られる樹脂油から、精油等の揮発性物質を留去した残留物中に存在する樹脂酸の混合物であり、製造方法により、ガムロジン、ウッドロジン、トール油ロジンに分類される。
Natural rosin is a mixture of resin acids present in the residue obtained by distilling volatile substances such as essential oils from resin oil obtained from Pinaceae plants, and is classified into gum rosin, wood rosin, and tall oil rosin according to the production method. Will be done.
ガムロジンは、松の木に切り傷をつけ、そこから流出する生松脂をろ過精製し、水蒸気蒸留によりテレビン油を除去して得られる。ウッドロジンは、松の切株のチップを溶剤抽出して得られる。トール油ロジンは、松材からクラフトパルプ法でパルプを製造する工程で副生する粗トール油を蒸留精製して得られる。
Gamrosin is obtained by cutting a pine tree, filtering and refining the raw pine fat flowing out of it, and removing turpentine oil by steam distillation. Wood rosin is obtained by solvent-extracting pine stump chips. Tall oil rosin is obtained by distilling and refining crude tall oil produced as a by-product in the process of producing pulp from pine wood by the kraft pulp method.
ロジンは、主成分の樹脂酸として、アビエチン酸を含み、その他の成分の樹脂酸として、ネオアビエチン酸、デヒドロアビエチン酸、テトラヒドロアビエチン酸、パラストリン酸、ピマール酸、イソピマール酸、サンダラコピマール酸、レボピマール酸等を含む。
Login contains abietic acid as the main component resin acid, and neo-avietic acid, dehydroabietic acid, tetrahydroabietic acid, palastolic acid, pimalic acid, isopimalic acid, sandalacopimaric acid, levopimal as the resin acids of other components. Contains acids and the like.
変性ロジンとは、天然ロジンを変性したものをいい、例えば、天然ロジンを高圧化でニッケル触媒、白金触媒、パラジウム触媒等の貴金属触媒等を使用して水素添加して、分子内の二重結合を消失若しくは減少させた水添ロジン、天然ロジンを貴金属触媒又はハロゲン触媒の存在下に高温加熱することにより分子内の不安定な共役二重結合を消失させた不均化ロジンが挙げられる。
The modified rosin refers to a modified natural rosin. For example, the natural rosin is hydrogenated using a noble metal catalyst such as a nickel catalyst, a platinum catalyst, or a palladium catalyst at high pressure to form a double bond in the molecule. Examples thereof include hydrogenated rosin in which hydrogenated rosin is eliminated or reduced, and disproportionated rosin in which unstable conjugated double bonds in the molecule are eliminated by heating natural rosin at a high temperature in the presence of a noble metal catalyst or a halogen catalyst.
重合ロジンとは、天然ロジン又は変性ロジン同士を反応させたものであり、これらの2量化物、3量化物をいう。
The polymerized rosin is a reaction between natural rosins or modified rosins, and refers to these dimers and trimers.
なお、このようなロジンとして、入手の容易さの観点から、天然ロジンが好ましい。このような天然ロジンとしては、より好ましくは、ガムロジンである。ロジンは、様々な化合物の混合物として扱うことが一般的であり、カルボン酸の量については、酸価を測定することで定量化される。酸価は、日本工業規格JIS K 0070により測定することで求められる。
As such rosin, natural rosin is preferable from the viewpoint of easy availability. As such a natural rosin, gum rosin is more preferable. Rosin is generally treated as a mixture of various compounds, and the amount of carboxylic acid is quantified by measuring the acid value. The acid value is determined by measuring according to the Japanese Industrial Standards JIS K0070.
一般式(1)において、AOは、炭素数2~18のオキシアルキレン基である。炭素数2~18のオキシアルキレン基としては、例えば、オキシエチレン基、オキシプロピレン基、オキシブチレン基、オキシテトラメチレン基、オキシスチレン基、オキシドデシレン基、オキシテトラデシレン基、オキシヘキサデシレン基、オキシオクタデシレン基等が挙げられる。なかでも、オキシエチレン基、オキシプロピレン基、オキシブチレン基、オキシテトラメチレン基等の炭素数2~4のオキシアルキレン基が好ましく、オキシエチレン基、オキシプロピレン基等の炭素数2~3のオキシアルキレン基がより好ましい。なお、AOは、1種又は2種以上でもよく、2種類以上の場合は、オキシアルキレン基はランダム付加体、ブロック付加体、交互付加体のいずれの形態であってもよい。
In the general formula (1), AO is an oxyalkylene group having 2 to 18 carbon atoms. Examples of the oxyalkylene group having 2 to 18 carbon atoms include an oxyethylene group, an oxypropylene group, an oxybutylene group, an oxytetramethylene group, an oxystyrene group, an oxidedecylene group, an oxytetradecylene group and an oxyhexadecylene. Examples include a group, an oxyoctadecylene group and the like. Of these, an oxyalkylene group having 2 to 4 carbon atoms such as an oxyethylene group, an oxypropylene group, an oxybutylene group and an oxytetramethylene group is preferable, and an oxyalkylene group having 2 to 3 carbon atoms such as an oxyethylene group and an oxypropylene group is preferable. Groups are more preferred. The AO may be one type or two or more types, and in the case of two or more types, the oxyalkylene group may be in any form of a random adduct, a block adduct, or an alternating adduct.
一般式(1)において、mは、平均付加モル数を表し、mは、1~200の数であり、好ましくは、1~150の数であり、より好ましくは、5~150の数であり、更に好ましくは、10~100の数である。また、nは、付加モル数を表し、1~20の数であり、好ましくは、1~6の数である。また、同時に、m及びnは、m×n=1~200の関係を満たす数であり、好ましくは、m×n=1~150の関係を満たす数であり、更に好ましくは、m×n=10~100の関係を満たす数である。m及びnの積が200を超える場合、製造コストが高くなりすぎることや、水硬性組成物の粘性が大きくなりすぎる。また、m及びnの積が1に満たない場合、得られる水硬性組成物の空気量が過剰となる。
In the general formula (1), m represents the average number of added moles, and m is a number of 1 to 200, preferably a number of 1 to 150, and more preferably a number of 5 to 150. , More preferably, the number is 10 to 100. Further, n represents the number of added moles, which is a number of 1 to 20, preferably 1 to 6. At the same time, m and n are numbers that satisfy the relationship of m × n = 1 to 200, preferably numbers that satisfy the relationship of m × n = 1 to 150, and more preferably m × n =. It is a number that satisfies the relationship of 10 to 100. If the product of m and n exceeds 200, the production cost becomes too high and the viscosity of the hydraulic composition becomes too high. Further, when the product of m and n is less than 1, the amount of air in the obtained hydraulic composition becomes excessive.
また、優れたポンプ圧送性を得るためには、一般式(1)において、AOの内、炭素数2のオキシアルキレン基が50モル%以上であることが必要であり、好ましくは80モル%以上であり、より好ましくは90モル%以上である。AOの内、炭素数2のオキシアルキレン基が50モル%未満の場合は、十分なポンプ圧送性が得られない。
Further, in order to obtain excellent pumping property, in the general formula (1), it is necessary that the oxyalkylene group having 2 carbon atoms in the AO is 50 mol% or more, preferably 80 mol% or more. It is more preferably 90 mol% or more. If the oxyalkylene group having 2 carbon atoms in the AO is less than 50 mol%, sufficient pumping property cannot be obtained.
一般式(1)において、nが1の場合、R1はロジンのアシル残基である。nが2以上の場合、R1のうち、少なくとも1つはロジンのアシル残基である。
In the general formula (1), when n is 1, R 1 is an acyl residue of rosin. when n is 2 or more, of R 1, at least one is an acyl residue of rosin.
一般式(1)において、R2は、水素原子、ロジンのアシル残基、炭素数1~20のアルキル基、炭素数2~20のアルケニル基、炭素数3~20の多価アルコールから水酸基を除いた残基、炭素数1~20のアシル基又は炭素数2~20のカルボン酸のアシル残基である。但し、R1の少なくとも一つが水素原子を示す場合、R2は、水素原子以外の置換基である。
In the general formula (1), R 2 is a hydroxyl group derived from a hydrogen atom, an acyl residue of rosin, an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, and a polyhydric alcohol having 3 to 20 carbon atoms. The removed residue is an acyl group having 1 to 20 carbon atoms or an acyl residue of a carboxylic acid having 2 to 20 carbon atoms. However, when at least one of R 1 represents a hydrogen atom, R 2 is a substituent other than the hydrogen atom.
炭素数1~20のアルキル基としては、例えば、メチル基、エチル基、n-プロピル基、イソプロピル基、n-ブチル基、イソブチル基、tert-ブチル基、n-ヘキシル基、n-オクチル基、デシル基、ウンデシル基、ドデシル基、トリデシル基、テトラデシル基、ペンタデシル基、ヘキサデシル基、ヘプタデシル基、オクタデシル基、ノナデシル基、イコシル基等の直鎖又は分岐アルキル基が挙げられる。なかでも、メチル基、エチル基、n-プロピル基、イソプロピル基、n-ブチル基、イソブチル基、tert-ブチル基等の炭素数1~4のアルキル基が好ましい。
Examples of the alkyl group having 1 to 20 carbon atoms include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a tert-butyl group, an n-hexyl group and an n-octyl group. Examples thereof include a linear or branched alkyl group such as a decyl group, an undecyl group, a dodecyl group, a tridecyl group, a tetradecyl group, a pentadecyl group, a hexadecyl group, a heptadecyl group, an octadecyl group, a nonadecil group and an icosyl group. Of these, alkyl groups having 1 to 4 carbon atoms such as a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group and a tert-butyl group are preferable.
炭素数2~20のアルケニル基としては、例えば、エテニル基、n-プロペニル基、n-ブテニル基、n-ペンテニル基、n-ヘキセニル基、n-ヘプテニル基、n-オクテニル基、n-ノネル基、n-デセニル基、n-ウンデセニル基、n-ドデセニル基、n-トリデセニル基、n-テトラデセニル基、n-ペンタデセニル基、n-ヘキサデセニル基、n-ヘプタデセニル基、n-オクタデセニル基、n-ノナデセニル基、n-イコセニル基等が挙げられる。なかでも、エテニル基、n-プロペニル基、n-ブテニル基、n-ペンテニル基等の炭素数2~5のアルケニル基が好ましい。
Examples of the alkenyl group having 2 to 20 carbon atoms include an ethenyl group, an n-propenyl group, an n-butenyl group, an n-pentenyl group, an n-hexenyl group, an n-heptenyl group, an n-octenyl group and an n-nonel group. , N-decenyl group, n-undecenyl group, n-dodecenyl group, n-tridecenyl group, n-tetradecenyl group, n-pentadecenyl group, n-hexadecenyl group, n-heptadecenyl group, n-octadecenyl group, n-nonadeceenyl group , N-Icosenyl group and the like. Of these, an alkenyl group having 2 to 5 carbon atoms, such as an ethenyl group, an n-propenyl group, an n-butenyl group, and an n-pentenyl group, is preferable.
炭素数3~20の多価アルコールから水酸基を除いた残基としては、例えば、グリセリン、トリメチロールプロパン、ペンタエリスリトール、ソルビトール及びソルビタン等の炭素数3~20の多価アルコールから水酸基を除いた残基が挙げられる。なかでも、グリセリン、トリメチロールプロパン、ペンタエリスリトール、ソルビトール及びソルビタン等の炭素数3~6の多価アルコールから水酸基を除いた残基が好ましい。
As the residue obtained by removing the hydroxyl group from the polyhydric alcohol having 3 to 20 carbon atoms, for example, the residue obtained by removing the hydroxyl group from the polyhydric alcohol having 3 to 20 carbon atoms such as glycerin, trimethylolpropane, pentaerythritol, sorbitol and sorbitan. The group is mentioned. Of these, residues obtained by removing hydroxyl groups from polyhydric alcohols having 3 to 6 carbon atoms, such as glycerin, trimethylolpropane, pentaerythritol, sorbitol, and sorbitan, are preferable.
炭素数1~20のアシル基としては、例えば、ホルミル基、アセチル基、プロピオニル基、ブチリル基、イソブチリル基、バレリル基、ヘキサノイル基、ヘプタノイル基、オクタノイル基、ノナノイル基、デカノイル基、ウンデカノイル基、ドデカノイル基、トリデカノイル基、テトラデカノイル基、ペンタデカノイル基、ヘキサデカノイル基、ヘプタデカノイル基、オクタデカノイル基、ノナデカノイル基、イコサノイル基、2-エチルヘキサノイル基、3-エチルヘプタノイル基、3-エチルデカノイル基等の直鎖又は分岐アシル基等が挙げられる。
Examples of the acyl group having 1 to 20 carbon atoms include a formyl group, an acetyl group, a propionyl group, a butyryl group, an isobutyryl group, a valeryl group, a hexanoyl group, a heptanoil group, an octanoyl group, a nonanoyl group, a decanoyyl group, an undecanoyl group and a dodecanoyl group. Group, tridecanoyl group, tetradecanoyl group, pentadecanoyl group, hexadecanoyl group, heptadecanoyl group, octadecanoyl group, nonadecanoyyl group, icosanoyl group, 2-ethylhexanoyl group, 3-ethylheptanoil group, 3- Examples thereof include a linear or branched acyl group such as an ethyldecanoyl group.
炭素数2~20の多価カルボン酸のアシル残基としては、例えば、シュウ酸、マロン酸、ジプロピルマロン酸、コハク酸、2,2-ジメチルコハク酸、グルタル酸、2-メチルグルタル酸、2,2-ジメチルグルタル酸、2,4-ジメチルグルタル酸、3-メチルグルタル酸、3,3-ジメチルグルタル酸、3-エチル-3-メチルグルタル酸、アジピン酸、3-メチルアジピン酸、ピメリン酸、2,2,6,6-テトラメチルピメリン酸、アゼライン酸、セバシン酸、ウンデカン二酸、ドデカン二酸、ペンタデカン二酸、テトラデカン二酸、ヘプタデカン二酸、オクタデカン二酸、ノナデカン二酸、エイコサン二酸及び1,4-シクロヘキサンジカルボン酸等の炭素数2~20の脂肪族多価カルボン酸から水酸基を除いたアシル残基、シクロプロパンジカルボン酸、1,4-シクロヘキサンジカルボン酸、シクロヘキセンジカルボン酸、ジシクロヘキシル-4,4’-ジカルボン酸及びショウノウ酸等の炭素数6~20の脂環式多価カルボン酸から水酸基を除いたアシル残基、テレフタル酸、イソフタル酸、2-メチルテレフタル酸、4,4’-スチルベンジカルボン酸、ナフタレンジカルボン酸、4,4’-ビフェニルジカルボン酸、オルトフタル酸、ジフェノキシエタンジカルボン酸、ジフェニルエーテルジカルボン酸及びジフェニルスルホンジカルボン酸等の炭素数6~20の芳香族多価カルボン酸から水酸基を除いたアシル残基が挙げられる。これらのアシル残基は、直鎖又は分岐のいずれであってもよい。
Examples of the acyl residue of the polyvalent carboxylic acid having 2 to 20 carbon atoms include oxalic acid, malonic acid, dipropylmalonic acid, succinic acid, 2,2-dimethylsuccinic acid, glutaric acid, and 2-methylglutaric acid. 2,2-Dimethylglutaric acid, 2,4-dimethylglutaric acid, 3-methylglutaric acid, 3,3-dimethylglutaric acid, 3-ethyl-3-methylglutaric acid, adipic acid, 3-methyladipic acid, pimerin Acids, 2,2,6,6-tetramethylpimelic acid, azelaic acid, sebacic acid, undecanedioic acid, dodecanedioic acid, pentadecanedioic acid, tetradecanedioic acid, heptadecanedioic acid, octadecanedioic acid, nonadecandioic acid, Acyl residues obtained by removing hydroxyl groups from aliphatic polyvalent carboxylic acids having 2 to 20 carbon atoms such as eicosandioic acid and 1,4-cyclohexanedicarboxylic acid, cyclopropanedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, cyclohexendicarboxylic acid. , Dicyclohexyl-4,4'-dicarboxylic acid, succinoic acid and other alicyclic polyvalent carboxylic acids having 6 to 20 carbon atoms minus hydroxyl groups, terephthalic acid, isophthalic acid, 2-methylterephthalic acid, 4 , 4'-stillbenzicarboxylic acid, naphthalenedicarboxylic acid, 4,4'-biphenyldicarboxylic acid, orthophthalic acid, diphenoxyetanedicarboxylic acid, diphenyletherdicarboxylic acid, diphenylsulfonedicarboxylic acid, etc. Examples thereof include an acyl residue obtained by removing a hydroxyl group from a carboxylic acid. These acyl residues may be linear or branched.
一般式(1)で表される化合物の製造方法は特に限定されない。例えば、アビエチン酸、ネオアビエチン酸、デヒドロアビエチン酸、テトラヒドロアビエチン酸、パラストリン酸、ピマール酸、イソピマール酸、サンダラコピマール酸、レボピマール酸等の樹脂酸の混合物であるロジンに、触媒等を用いることで常法によりアルキレンオキサイドを付加させて、一般式(1)で表されるロジンポリオキシアルキレン付加物を製造する方法や、R2に予め、触媒等を用いることで常法によりアルキレンオキシドを付加し、その後ロジンとエステル化させることにより、一般式(1)で表されるロジンポリオキシアルキレン付加物を製造する方法等が挙げられる。
The method for producing the compound represented by the general formula (1) is not particularly limited. For example, by using a catalyst or the like for rosin, which is a mixture of resin acids such as abietic acid, neoavietic acid, dehydroabietic acid, tetrahydroabietic acid, palastolic acid, pimaric acid, isopimalic acid, sandalacopimalic acid, and levopimalic acid. An alkylene oxide is added by a conventional method to produce a rosin polyoxyalkylene adduct represented by the general formula (1), or an alkylene oxide is added to R 2 in advance by using a catalyst or the like. After that, a method for producing a rosin polyoxyalkylene adduct represented by the general formula (1) by esterifying with rosin can be mentioned.
本発明に係る水硬性組成物用添加剤は、土木、建築等に用いられる水硬性結合材を含有する水硬性組成物に使用されるものである。
The additive for a hydraulic composition according to the present invention is used for a hydraulic composition containing a hydraulic binder used in civil engineering, construction and the like.
本発明に係る水硬性組成物用添加剤は、既存の分散剤と併用することができる。かかる分散剤としては、例えば、リグニンスルホン酸系分散剤、ポリカルボン酸系分散剤、ナフタレンスルホン酸系分散剤、アミノスルホン酸系分散剤等が挙げられる。なかでも、分散保持性を確保するという観点から、リグニンスルホン酸系分散剤、及び、ポリカルボン酸系分散剤からなる群から選ばれる少なくとも1種の分散剤が好ましい。
The additive for hydraulic composition according to the present invention can be used in combination with an existing dispersant. Examples of such a dispersant include a lignin sulfonic acid-based dispersant, a polycarboxylic acid-based dispersant, a naphthalene sulfonic acid-based dispersant, an amino sulfonic acid-based dispersant, and the like. Among them, at least one dispersant selected from the group consisting of a lignin sulfonic acid-based dispersant and a polycarboxylic acid-based dispersant is preferable from the viewpoint of ensuring dispersion retention.
本発明に係る水硬性組成物用添加剤は、ポンプ圧送性を損なわず、スランプと空気量に影響を与えないのであれば、更に既存の混和剤と併用することができる。かかる混和剤としては、例えば、AE減水剤、高性能AE減水剤、AE剤、消泡剤、収縮低減剤、増粘剤、硬化促進剤等が挙げられる。
The additive for hydraulic composition according to the present invention can be further used in combination with an existing admixture as long as it does not impair the pumping property and does not affect the slump and the amount of air. Examples of such 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.
本発明に係る水硬性組成物用添加剤の使用対象となる水硬性組成物の調製に用いる水硬性結合材としては、例えば、普通ポルトランドセメント、早強ポルトランドセメント、中庸熱ポルトランドセメント等の各種ポルトランドセメントの他に、高炉セメント、フライアッシュセメント、シリカフュームセメント等の各種混合セメントが挙げられる。また、高炉スラグ微粉末、フライアッシュ、シリカフュームなどの各種混和材を、先に示した各種セメントと併用してもよい。
Examples of the hydraulic binder used for preparing the hydraulic composition to which the additive for the hydraulic composition according to the present invention is used include various Portland cements such as ordinary Portland cement, early-strength Portland cement, and moderate heat Portland cement. In addition to portland cement, various mixed cements such as blast furnace cement, fly ash cement, and silica fume cement can be mentioned. In addition, various admixtures such as blast furnace slag fine powder, fly ash, and silica fume may be used in combination with the various cements shown above.
また、水硬性組成物の調製に骨材を用いる場合、その骨材としては、例えば、細骨材、粗骨材が挙げられる。細骨材としては、例えば、川砂、山砂、海砂、砕砂、スラグ細骨材等が挙げられ、粗骨材としては、例えば、川砂利、砕石、軽量骨材等が挙げられる。
When an aggregate is used for preparing a hydraulic composition, examples of the aggregate include fine aggregate and coarse aggregate. Examples of the fine aggregate include river sand, mountain sand, sea sand, crushed sand, slag fine aggregate, and the like, and examples of the coarse aggregate include river gravel, crushed stone, and lightweight aggregate.
更に、水硬性組成物の水結合材比は、特に限定されない。一般的に使用される水結合材比において、高い効果を発現する。
Furthermore, the ratio of the water binder of the hydraulic composition is not particularly limited. It exhibits a high effect in the ratio of commonly used water binders.
本発明に係る水硬性組成物用添加剤は、水硬性結合材100質量部当たり、0.00001~1質量部の割合で配合されることが好ましく、0.0001~0.4質量部の割合で配合されることがより好ましく、0.0005~0.1質量部の割合で配合されることが更に好ましい。
The additive for a water-hard composition according to the present invention is preferably blended in a proportion of 0.00001 to 1 part by mass, preferably 0.0001 to 0.4 parts by mass, per 100 parts by mass of the water-hard binder. It is more preferable that the mixture is blended in a proportion of 0.0005 to 0.1 parts by mass.
以下、本発明の構成及び効果をより具体的にするため、実施例等を挙げるが、本発明がこれらの実施例に限定されるというものではない。なお、以下の実施例及び比較例において、特に断りのない限り、“部”は質量部、“%”は質量%を意味する。
Hereinafter, examples and the like will be given in order to make the configuration and effect of the present invention more specific, but the present invention is not limited to these examples. In the following Examples and Comparative Examples, “parts” means parts by mass and “%” means mass% unless otherwise specified.
試験区分1(一般式(1)で表される化合物の合成)
・化合物(A-1)の合成
2Lのステンレス製耐圧容器に、中華人民共和国産(以降、単に「中国産」と記す)の「ガムロジン」のXグレード(酸価:171mgKOH/g)を626.9gと、水酸化カリウム2.0gを仕込み、120℃まで加熱し、撹拌しながら減圧脱水を1時間行った。窒素にて常圧に戻し、その後、150~160℃でエチレンオキサイド1264gを0.4MPaの条件圧入し、続いてプロピレンオキサイド107gを同条件で圧入し、そのままの温度で1時間熟成を行った。その後、冷却し、吸着材(共和化学工業社製の商品名:キョーワード600)を20g添加し、120℃にて減圧脱水の後、加圧濾過を行い、化合物(A-1)を得た。 Test category 1 (Synthesis of compound represented by general formula (1))
-Synthesis of compound (A-1) In a 2 L stainless steel pressure-resistant container, X grade (acid value: 171 mgKOH / g) of "gamrosin" produced in the People's Republic of China (hereinafter simply referred to as "produced in China") was 626. 9 g and 2.0 g of potassium hydroxide were charged, heated to 120 ° C., and dehydrated under reduced pressure while stirring for 1 hour. The pressure was returned to normal pressure with nitrogen, then 1264 g of ethylene oxide was press-fitted under the same conditions at 150 to 160 ° C., and then 107 g of propylene oxide was press-fitted under the same conditions, and the mixture was aged at the same temperature for 1 hour. Then, the mixture was cooled, 20 g of an adsorbent (trade name: Kyoward 600 manufactured by Kyowa Kagaku Kogyo Co., Ltd.) was added, dehydrated under reduced pressure at 120 ° C., and then pressure filtered to obtain compound (A-1). ..
・化合物(A-1)の合成
2Lのステンレス製耐圧容器に、中華人民共和国産(以降、単に「中国産」と記す)の「ガムロジン」のXグレード(酸価:171mgKOH/g)を626.9gと、水酸化カリウム2.0gを仕込み、120℃まで加熱し、撹拌しながら減圧脱水を1時間行った。窒素にて常圧に戻し、その後、150~160℃でエチレンオキサイド1264gを0.4MPaの条件圧入し、続いてプロピレンオキサイド107gを同条件で圧入し、そのままの温度で1時間熟成を行った。その後、冷却し、吸着材(共和化学工業社製の商品名:キョーワード600)を20g添加し、120℃にて減圧脱水の後、加圧濾過を行い、化合物(A-1)を得た。 Test category 1 (Synthesis of compound represented by general formula (1))
-Synthesis of compound (A-1) In a 2 L stainless steel pressure-resistant container, X grade (acid value: 171 mgKOH / g) of "gamrosin" produced in the People's Republic of China (hereinafter simply referred to as "produced in China") was 626. 9 g and 2.0 g of potassium hydroxide were charged, heated to 120 ° C., and dehydrated under reduced pressure while stirring for 1 hour. The pressure was returned to normal pressure with nitrogen, then 1264 g of ethylene oxide was press-fitted under the same conditions at 150 to 160 ° C., and then 107 g of propylene oxide was press-fitted under the same conditions, and the mixture was aged at the same temperature for 1 hour. Then, the mixture was cooled, 20 g of an adsorbent (trade name: Kyoward 600 manufactured by Kyowa Kagaku Kogyo Co., Ltd.) was added, dehydrated under reduced pressure at 120 ° C., and then pressure filtered to obtain compound (A-1). ..
・化合物(A-2)の合成
2Lのステンレス製耐圧容器に、中国産の「ガムロジン」のXグレード(酸価:171mgKOH/g)を541.7gと、水酸化カリウム2.0gを仕込み、120℃まで加熱し、撹拌しながら減圧脱水を1時間行った。窒素にて常圧に戻し、その後、150~160℃でエチレンオキサイド1456gを0.4MPaの条件圧入し、そのままの温度で1時間熟成を行った。冷却後、85%リン酸を2.7g添加し、120℃にて減圧脱水の後、加圧濾過を行い、化合物(A-2)を得た。 -Synthesis of compound (A-2) 541.7 g of Chinese "Gamrosin" X grade (acid value: 171 mgKOH / g) and 2.0 g of potassium hydroxide were placed in a 2 L stainless steel pressure-resistant container, and 120 The mixture was heated to ° C. and dehydrated under reduced pressure while stirring for 1 hour. After returning to normal pressure with nitrogen, 1456 g of ethylene oxide was press-fitted under the condition of 0.4 MPa at 150 to 160 ° C., and aging was carried out at the same temperature for 1 hour. After cooling, 2.7 g of 85% phosphoric acid was added, dehydrated under reduced pressure at 120 ° C., and then pressure-filtered to obtain compound (A-2).
2Lのステンレス製耐圧容器に、中国産の「ガムロジン」のXグレード(酸価:171mgKOH/g)を541.7gと、水酸化カリウム2.0gを仕込み、120℃まで加熱し、撹拌しながら減圧脱水を1時間行った。窒素にて常圧に戻し、その後、150~160℃でエチレンオキサイド1456gを0.4MPaの条件圧入し、そのままの温度で1時間熟成を行った。冷却後、85%リン酸を2.7g添加し、120℃にて減圧脱水の後、加圧濾過を行い、化合物(A-2)を得た。 -Synthesis of compound (A-2) 541.7 g of Chinese "Gamrosin" X grade (acid value: 171 mgKOH / g) and 2.0 g of potassium hydroxide were placed in a 2 L stainless steel pressure-resistant container, and 120 The mixture was heated to ° C. and dehydrated under reduced pressure while stirring for 1 hour. After returning to normal pressure with nitrogen, 1456 g of ethylene oxide was press-fitted under the condition of 0.4 MPa at 150 to 160 ° C., and aging was carried out at the same temperature for 1 hour. After cooling, 2.7 g of 85% phosphoric acid was added, dehydrated under reduced pressure at 120 ° C., and then pressure-filtered to obtain compound (A-2).
・化合物(A-3)の合成
2Lのステンレス製耐圧容器に、中国産の「ガムロジン」のXグレード(酸価:171mgKOH/g)を191.9gと、水酸化カリウム2.0gを仕込み、120℃まで加熱し、撹拌しながら減圧脱水を1時間行った。窒素にて常圧に戻し、その後、150~160℃でエチレンオキサイド1806gを0.4MPaの条件圧入し、そのままの温度で1時間熟成を行った。冷却後、回収し、化合物(A-3)を得た。 -Synthesis of compound (A-3) In a 2 L stainless steel pressure-resistant container, 191.9 g of X grade (acid value: 171 mgKOH / g) of "Gamrosin" produced in China and 2.0 g of potassium hydroxide were charged and 120. The mixture was heated to ° C. and dehydrated under reduced pressure while stirring for 1 hour. After returning to normal pressure with nitrogen, 1806 g of ethylene oxide was press-fitted under the condition of 0.4 MPa at 150 to 160 ° C., and aging was carried out at the same temperature for 1 hour. After cooling, it was recovered to obtain compound (A-3).
2Lのステンレス製耐圧容器に、中国産の「ガムロジン」のXグレード(酸価:171mgKOH/g)を191.9gと、水酸化カリウム2.0gを仕込み、120℃まで加熱し、撹拌しながら減圧脱水を1時間行った。窒素にて常圧に戻し、その後、150~160℃でエチレンオキサイド1806gを0.4MPaの条件圧入し、そのままの温度で1時間熟成を行った。冷却後、回収し、化合物(A-3)を得た。 -Synthesis of compound (A-3) In a 2 L stainless steel pressure-resistant container, 191.9 g of X grade (acid value: 171 mgKOH / g) of "Gamrosin" produced in China and 2.0 g of potassium hydroxide were charged and 120. The mixture was heated to ° C. and dehydrated under reduced pressure while stirring for 1 hour. After returning to normal pressure with nitrogen, 1806 g of ethylene oxide was press-fitted under the condition of 0.4 MPa at 150 to 160 ° C., and aging was carried out at the same temperature for 1 hour. After cooling, it was recovered to obtain compound (A-3).
・化合物(A-4)の合成
1Lのガラス製反応容器に試薬のα-メトキシ-ω-ヒドロキシ-ポリ(n=45)オキシエチレン500.0gと中国産の「ガムロジン」のXグレード(酸価:171mgKOH/g)を82.0g、メタンスルホン酸7.2gを仕込み、窒素置換後、150℃、0.5kPaで減圧脱水を行い、エステル化反応を行った。エステル化率が99%以上となったところで反応を終了し、精製し、化合物(A-4)を得た。 -Synthesis of compound (A-4) In a 1 L glass reaction vessel, 500.0 g of α-methoxy-ω-hydroxy-poly (n = 45) oxyethylene as a reagent and X grade (acid value) of "gamrosin" produced in China 82.0 g of 171 mgKOH / g) and 7.2 g of methanesulfonic acid were charged, and after nitrogen substitution, dehydration under reduced pressure was carried out at 150 ° C. and 0.5 kPa to carry out an esterification reaction. When the esterification rate was 99% or more, the reaction was terminated and purified to obtain compound (A-4).
1Lのガラス製反応容器に試薬のα-メトキシ-ω-ヒドロキシ-ポリ(n=45)オキシエチレン500.0gと中国産の「ガムロジン」のXグレード(酸価:171mgKOH/g)を82.0g、メタンスルホン酸7.2gを仕込み、窒素置換後、150℃、0.5kPaで減圧脱水を行い、エステル化反応を行った。エステル化率が99%以上となったところで反応を終了し、精製し、化合物(A-4)を得た。 -Synthesis of compound (A-4) In a 1 L glass reaction vessel, 500.0 g of α-methoxy-ω-hydroxy-poly (n = 45) oxyethylene as a reagent and X grade (acid value) of "gamrosin" produced in China 82.0 g of 171 mgKOH / g) and 7.2 g of methanesulfonic acid were charged, and after nitrogen substitution, dehydration under reduced pressure was carried out at 150 ° C. and 0.5 kPa to carry out an esterification reaction. When the esterification rate was 99% or more, the reaction was terminated and purified to obtain compound (A-4).
・化合物(A-5)の合成
1Lのガラス製反応容器に試薬のグリセリン92.1gと中国産の「ガムロジン」のXグレード(酸価:171mgKOH/g)を656.2g、メタンスルホン酸19.2gを仕込み、窒素置換後、150℃、0.5kPaで減圧脱水を行い、エステル化反応を行った。エステル化率が99%以上となったところで反応を終了し、精製し、化合物(A-5)を得た。 -Synthesis of compound (A-5) In a 1 L glass reaction vessel, 92.1 g of the reagent glycerin, 656.2 g of X grade (acid value: 171 mgKOH / g) of "gamrosin" produced in China, and 19. methanesulfonic acid 19. After charging 2 g and replacing with nitrogen, dehydration under reduced pressure was carried out at 150 ° C. and 0.5 kPa to carry out an esterification reaction. When the esterification rate was 99% or more, the reaction was terminated and purified to obtain compound (A-5).
1Lのガラス製反応容器に試薬のグリセリン92.1gと中国産の「ガムロジン」のXグレード(酸価:171mgKOH/g)を656.2g、メタンスルホン酸19.2gを仕込み、窒素置換後、150℃、0.5kPaで減圧脱水を行い、エステル化反応を行った。エステル化率が99%以上となったところで反応を終了し、精製し、化合物(A-5)を得た。 -Synthesis of compound (A-5) In a 1 L glass reaction vessel, 92.1 g of the reagent glycerin, 656.2 g of X grade (acid value: 171 mgKOH / g) of "gamrosin" produced in China, and 19. methanesulfonic acid 19. After charging 2 g and replacing with nitrogen, dehydration under reduced pressure was carried out at 150 ° C. and 0.5 kPa to carry out an esterification reaction. When the esterification rate was 99% or more, the reaction was terminated and purified to obtain compound (A-5).
・化合物(A-6)の合成
1Lのガラス製反応容器に試薬のソルビトール93.6gと中国産の「ガムロジン」のXグレード(酸価:171mgKOH/g)を656.2g、メタンスルホン酸19.2gを仕込み、窒素置換後、150℃、0.5kPaで減圧脱水を行い、エステル化反応を行った。エステル化率が99%以上となったところで反応を終了し、精製し、化合物(A-6)を得た。 -Synthesis of compound (A-6) In a 1 L glass reaction vessel, 93.6 g of the reagent sorbitol, 656.2 g of X grade (acid value: 171 mgKOH / g) of "gamrosin" produced in China, and methanesulfonic acid 19. After charging 2 g and replacing with nitrogen, dehydration under reduced pressure was carried out at 150 ° C. and 0.5 kPa to carry out an esterification reaction. When the esterification rate was 99% or more, the reaction was terminated and purified to obtain compound (A-6).
1Lのガラス製反応容器に試薬のソルビトール93.6gと中国産の「ガムロジン」のXグレード(酸価:171mgKOH/g)を656.2g、メタンスルホン酸19.2gを仕込み、窒素置換後、150℃、0.5kPaで減圧脱水を行い、エステル化反応を行った。エステル化率が99%以上となったところで反応を終了し、精製し、化合物(A-6)を得た。 -Synthesis of compound (A-6) In a 1 L glass reaction vessel, 93.6 g of the reagent sorbitol, 656.2 g of X grade (acid value: 171 mgKOH / g) of "gamrosin" produced in China, and methanesulfonic acid 19. After charging 2 g and replacing with nitrogen, dehydration under reduced pressure was carried out at 150 ° C. and 0.5 kPa to carry out an esterification reaction. When the esterification rate was 99% or more, the reaction was terminated and purified to obtain compound (A-6).
・化合物(A-7)の合成
1Lのガラス製反応容器にポリ(n=70)エチレングリコール309.8gと中国産の「ガムロジン」のXグレード(酸価:171mgKOH/g)を52.5g、パラトルエンスルホン酸一水和物5.8gを仕込み、窒素置換後、150℃、0.5kPaで減圧脱水を行い、エステル化反応を行った。エステル化率が99%以上となったところで反応を終了し、精製し、化合物(A-7)を得た。 -Synthesis of compound (A-7) In a 1 L glass reaction vessel, 309.8 g of poly (n = 70) ethylene glycol and 52.5 g of X grade (acid value: 171 mgKOH / g) of "gamrosin" produced in China, 5.8 g of paratoluenesulfonic acid monohydrate was charged, and after nitrogen substitution, dehydration under reduced pressure was carried out at 150 ° C. and 0.5 kPa to carry out an esterification reaction. When the esterification rate was 99% or more, the reaction was terminated and purified to obtain compound (A-7).
1Lのガラス製反応容器にポリ(n=70)エチレングリコール309.8gと中国産の「ガムロジン」のXグレード(酸価:171mgKOH/g)を52.5g、パラトルエンスルホン酸一水和物5.8gを仕込み、窒素置換後、150℃、0.5kPaで減圧脱水を行い、エステル化反応を行った。エステル化率が99%以上となったところで反応を終了し、精製し、化合物(A-7)を得た。 -Synthesis of compound (A-7) In a 1 L glass reaction vessel, 309.8 g of poly (n = 70) ethylene glycol and 52.5 g of X grade (acid value: 171 mgKOH / g) of "gamrosin" produced in China, 5.8 g of paratoluenesulfonic acid monohydrate was charged, and after nitrogen substitution, dehydration under reduced pressure was carried out at 150 ° C. and 0.5 kPa to carry out an esterification reaction. When the esterification rate was 99% or more, the reaction was terminated and purified to obtain compound (A-7).
・化合物(A-8)の合成
1Lのガラス製反応容器にα-メタリル-ω-ヒドロキシ-ポリ(n=50)オキシエチレン500.0gと中国産の「ガムロジン」のXグレード(酸価:171mgKOH/g)を72.2g、パラトルエンスルホン酸一水和物12.7gを仕込み、窒素置換後、150℃、0.5kPaで減圧脱水を行い、エステル化反応を行った。エステル化率が99%以上となったところで反応を終了し、精製し、化合物(A-8)を得た。 -Synthesis of compound (A-8) 500.0 g of α-metharyl-ω-hydroxy-poly (n = 50) oxyethylene and X grade (acid value: 171 mgKOH) of "gamrosin" produced in China in a 1 L glass reaction vessel. 72.2 g of / g) and 12.7 g of p-toluenesulfonic acid monohydrate were charged, and after nitrogen substitution, dehydration under reduced pressure was carried out at 150 ° C. and 0.5 kPa to carry out an esterification reaction. When the esterification rate was 99% or more, the reaction was terminated and purified to obtain compound (A-8).
1Lのガラス製反応容器にα-メタリル-ω-ヒドロキシ-ポリ(n=50)オキシエチレン500.0gと中国産の「ガムロジン」のXグレード(酸価:171mgKOH/g)を72.2g、パラトルエンスルホン酸一水和物12.7gを仕込み、窒素置換後、150℃、0.5kPaで減圧脱水を行い、エステル化反応を行った。エステル化率が99%以上となったところで反応を終了し、精製し、化合物(A-8)を得た。 -Synthesis of compound (A-8) 500.0 g of α-metharyl-ω-hydroxy-poly (n = 50) oxyethylene and X grade (acid value: 171 mgKOH) of "gamrosin" produced in China in a 1 L glass reaction vessel. 72.2 g of / g) and 12.7 g of p-toluenesulfonic acid monohydrate were charged, and after nitrogen substitution, dehydration under reduced pressure was carried out at 150 ° C. and 0.5 kPa to carry out an esterification reaction. When the esterification rate was 99% or more, the reaction was terminated and purified to obtain compound (A-8).
・化合物(A-9)の合成
表1に示すように原料の仕込み量を変化させた以外は、化合物(A-1)と同様に合成を行い、化合物(A-9)を得た。 -Synthesis of compound (A-9) Compound (A-9) was obtained by synthesizing in the same manner as compound (A-1) except that the amount of raw materials charged was changed as shown in Table 1.
表1に示すように原料の仕込み量を変化させた以外は、化合物(A-1)と同様に合成を行い、化合物(A-9)を得た。 -Synthesis of compound (A-9) Compound (A-9) was obtained by synthesizing in the same manner as compound (A-1) except that the amount of raw materials charged was changed as shown in Table 1.
以上で合成した化合物(A-1)~(A-9)及び(R-1)~(R-2)の内容を表1にまとめて示した。
Table 1 summarizes the contents of the compounds (A-1) to (A-9) and (R-1) to (R-2) synthesized above.
表1において、R-1、R-2について以下に示す。R-1、R-2をそのまま用いている。
R-1:中国産の「ガムロジン」のXグレード
R-2:試薬のポリエチレングリコール(分子量1000) In Table 1, R-1 and R-2 are shown below. R-1 and R-2 are used as they are.
R-1: X grade of "Gamrosin" from China R-2: Polyethylene glycol as a reagent (molecular weight 1000)
R-1:中国産の「ガムロジン」のXグレード
R-2:試薬のポリエチレングリコール(分子量1000) In Table 1, R-1 and R-2 are shown below. R-1 and R-2 are used as they are.
R-1: X grade of "Gamrosin" from China R-2: Polyethylene glycol as a reagent (molecular weight 1000)
表1中のR1について以下に示す。
「ガムロジンアシル残基」:ガムロジンのカルボン酸から水酸基を除いたもの
「ガムロジンアシル残基:H=2:1」:R1におけるガムロジンアシル残基と水素原子のモル比率が2:1
「ガムロジンアシル残基:H=4:1」:R1におけるガムロジンアシル残基と水素原子のモル比率が4:1
EO:オキシエチレン基
PO:オキシプロピレン基 R 1 in Table 1 is shown below.
"Gum Rosin acyl residue": minus a hydroxyl group from a carboxylic acid of the gum "Gum Rosin acyl residues: H = 2: 1" molar ratio of gum in R 1 rosin acyl residue and hydrogen atoms is 2: 1
"Gum Rosin acyl residues: H = 4: 1" molar ratio of gum in R 1 rosin acyl residue and hydrogen atoms is 4: 1
EO: Oxyethylene group PO: Oxypropylene group
「ガムロジンアシル残基」:ガムロジンのカルボン酸から水酸基を除いたもの
「ガムロジンアシル残基:H=2:1」:R1におけるガムロジンアシル残基と水素原子のモル比率が2:1
「ガムロジンアシル残基:H=4:1」:R1におけるガムロジンアシル残基と水素原子のモル比率が4:1
EO:オキシエチレン基
PO:オキシプロピレン基 R 1 in Table 1 is shown below.
"Gum Rosin acyl residue": minus a hydroxyl group from a carboxylic acid of the gum "Gum Rosin acyl residues: H = 2: 1" molar ratio of gum in R 1 rosin acyl residue and hydrogen atoms is 2: 1
"Gum Rosin acyl residues: H = 4: 1" molar ratio of gum in R 1 rosin acyl residue and hydrogen atoms is 4: 1
EO: Oxyethylene group PO: Oxypropylene group
試験区分2(コンクリート組成物の調製)
・実施例1~13及び比較例1~6
容量60リットルの強制2軸ミキサーを用い、表2に記載の内容で、90秒間練混ぜを行い、表3に記載した各コンクリート組成物を調製した。なお、各コンクリート組成物について、目標空気量を4.5±1.5%とし、目標スランプを18±1cmとした。なお、実施例13及び比較例6においては、容量2.0m3の強制2軸ミキサーを用いて同様に練り混ぜた。なお、コンクリート組成物の温度は20℃の条件で行った。 Test Category 2 (Preparation of Concrete Composition)
-Examples 1 to 13 and Comparative Examples 1 to 6
Using a forced twin-screw mixer with a capacity of 60 liters, kneading was performed for 90 seconds with the contents shown in Table 2 to prepare each concrete composition shown in Table 3. For each concrete composition, the target air amount was 4.5 ± 1.5% and the target slump was 18 ± 1 cm. In Example 13 and Comparative Example 6, the mixture was similarly kneaded using a forced twin-screw mixer having a capacity of 2.0 m 3. The temperature of the concrete composition was 20 ° C.
・実施例1~13及び比較例1~6
容量60リットルの強制2軸ミキサーを用い、表2に記載の内容で、90秒間練混ぜを行い、表3に記載した各コンクリート組成物を調製した。なお、各コンクリート組成物について、目標空気量を4.5±1.5%とし、目標スランプを18±1cmとした。なお、実施例13及び比較例6においては、容量2.0m3の強制2軸ミキサーを用いて同様に練り混ぜた。なお、コンクリート組成物の温度は20℃の条件で行った。 Test Category 2 (Preparation of Concrete Composition)
-Examples 1 to 13 and Comparative Examples 1 to 6
Using a forced twin-screw mixer with a capacity of 60 liters, kneading was performed for 90 seconds with the contents shown in Table 2 to prepare each concrete composition shown in Table 3. For each concrete composition, the target air amount was 4.5 ± 1.5% and the target slump was 18 ± 1 cm. In Example 13 and Comparative Example 6, the mixture was similarly kneaded using a forced twin-screw mixer having a capacity of 2.0 m 3. The temperature of the concrete composition was 20 ° C.
表2において、各配合について以下に示す。
In Table 2, each formulation is shown below.
・配合No1
セメント:普通ポルトランドセメント(密度=3.16g/cm3)
細骨材1:陸砂(表乾密度=2.58g/cm3)
粗骨材1:砕石2005(表乾密度=2.66g/cm3) ・ Formulation No1
Cement: Ordinary Portland cement (density = 3.16 g / cm 3 )
Fine aggregate 1: Land sand (surface dry density = 2.58 g / cm 3 )
Coarse aggregate 1: Crushed stone 2005 (surface dry density = 2.66 g / cm 3 )
セメント:普通ポルトランドセメント(密度=3.16g/cm3)
細骨材1:陸砂(表乾密度=2.58g/cm3)
粗骨材1:砕石2005(表乾密度=2.66g/cm3) ・ Formulation No1
Cement: Ordinary Portland cement (density = 3.16 g / cm 3 )
Fine aggregate 1: Land sand (surface dry density = 2.58 g / cm 3 )
Coarse aggregate 1: Crushed stone 2005 (surface dry density = 2.66 g / cm 3 )
配合No1では、更に以下の各化合物を使用した。
減水剤:AE減水剤標準形I種(高機能タイプ) チューポールEX60(竹本油脂社製、変性リグニンスルホン酸化合物とポリカルボン酸系化合物の複合体)をセメント質量に対して1.0%使用
消泡剤:AFK-2(竹本油脂社製)をセメント質量に対して0.0005%使用
AE剤:AE-300(竹本油脂社製)をセメント質量に対して0.0015%使用 In formulation No. 1, the following compounds were further used.
Water reducing agent: AE water reducing agent standard type I (high-performance type) Tupole EX60 (manufactured by Takemoto Oil & Fat Co., Ltd., a complex of a modified lignin sulfonic acid compound and a polycarboxylic acid-based compound) is used at 1.0% based on the cement mass. Defoamer: AFK-2 (manufactured by Takemoto Oil & Fat Co., Ltd.) is used at 0.0005% of the cement mass AE agent: AE-300 (manufactured by Takemoto Oil & Fat Co., Ltd.) is used at 0.0015% of the cement mass
減水剤:AE減水剤標準形I種(高機能タイプ) チューポールEX60(竹本油脂社製、変性リグニンスルホン酸化合物とポリカルボン酸系化合物の複合体)をセメント質量に対して1.0%使用
消泡剤:AFK-2(竹本油脂社製)をセメント質量に対して0.0005%使用
AE剤:AE-300(竹本油脂社製)をセメント質量に対して0.0015%使用 In formulation No. 1, the following compounds were further used.
Water reducing agent: AE water reducing agent standard type I (high-performance type) Tupole EX60 (manufactured by Takemoto Oil & Fat Co., Ltd., a complex of a modified lignin sulfonic acid compound and a polycarboxylic acid-based compound) is used at 1.0% based on the cement mass. Defoamer: AFK-2 (manufactured by Takemoto Oil & Fat Co., Ltd.) is used at 0.0005% of the cement mass AE agent: AE-300 (manufactured by Takemoto Oil & Fat Co., Ltd.) is used at 0.0015% of the cement mass
・配合No2
セメント:普通ポルトランドセメント(密度=3.16g/cm3)
BFS(高炉スラグ微粉末):高炉スラグ微粉末4000ブレーン(密度=2.89g/cm3)
FA(フライアッシュ):フライアッシュII種(密度=2.21g/cm3)
細骨材1:陸砂(表乾密度=2.57g/cm3)
粗骨材1:砕石2005(表乾密度=2.68g/cm3) ・ Formulation No2
Cement: Ordinary Portland cement (density = 3.16 g / cm 3 )
BFS (Blast Furnace Slag Fine Powder): Blast Furnace Slag Fine Powder 4000 Brain (Density = 2.89 g / cm 3 )
FA (fly ash): Fly ash type II (density = 2.21 g / cm 3 )
Fine aggregate 1: Land sand (surface dry density = 2.57 g / cm 3 )
Coarse aggregate 1: Crushed stone 2005 (surface dry density = 2.68 g / cm 3 )
セメント:普通ポルトランドセメント(密度=3.16g/cm3)
BFS(高炉スラグ微粉末):高炉スラグ微粉末4000ブレーン(密度=2.89g/cm3)
FA(フライアッシュ):フライアッシュII種(密度=2.21g/cm3)
細骨材1:陸砂(表乾密度=2.57g/cm3)
粗骨材1:砕石2005(表乾密度=2.68g/cm3) ・ Formulation No2
Cement: Ordinary Portland cement (density = 3.16 g / cm 3 )
BFS (Blast Furnace Slag Fine Powder): Blast Furnace Slag Fine Powder 4000 Brain (Density = 2.89 g / cm 3 )
FA (fly ash): Fly ash type II (density = 2.21 g / cm 3 )
Fine aggregate 1: Land sand (surface dry density = 2.57 g / cm 3 )
Coarse aggregate 1: Crushed stone 2005 (surface dry density = 2.68 g / cm 3 )
配合No2では、更に以下の各化合物を使用した。
減水剤:高性能AE減水剤標準形I種(高機能タイプ) チューポールHP-8(竹本油脂社製、ポリカルボン酸コポリマー)をセメント質量に対して0.7%使用
消泡剤:AFK-2(竹本油脂社製)をセメント質量に対して0.0003%
AE剤:AE-200(竹本油脂社製)をセメント質量に対して0.0002% In Formulation No. 2, the following compounds were further used.
Water reducing agent: High-performance AE water reducing agent Standard type I (high-performance type) Chupol HP-8 (manufactured by Takemoto Oil & Fat Co., Ltd., polycarboxylic acid copolymer) is used at 0.7% of the cement mass Defoaming agent: AFK- 2 (manufactured by Takemoto Oil & Fat Co., Ltd.) 0.0003% of the cement mass
AE agent: AE-200 (manufactured by Takemoto Oil & Fat Co., Ltd.) 0.0002% of cement mass
減水剤:高性能AE減水剤標準形I種(高機能タイプ) チューポールHP-8(竹本油脂社製、ポリカルボン酸コポリマー)をセメント質量に対して0.7%使用
消泡剤:AFK-2(竹本油脂社製)をセメント質量に対して0.0003%
AE剤:AE-200(竹本油脂社製)をセメント質量に対して0.0002% In Formulation No. 2, the following compounds were further used.
Water reducing agent: High-performance AE water reducing agent Standard type I (high-performance type) Chupol HP-8 (manufactured by Takemoto Oil & Fat Co., Ltd., polycarboxylic acid copolymer) is used at 0.7% of the cement mass Defoaming agent: AFK- 2 (manufactured by Takemoto Oil & Fat Co., Ltd.) 0.0003% of the cement mass
AE agent: AE-200 (manufactured by Takemoto Oil & Fat Co., Ltd.) 0.0002% of cement mass
・配合No3
セメント:普通ポルトランドセメント(密度=3.16g/cm3)
細骨材1:山砂(表乾密度=2.57g/cm3)
細骨材2:砕砂(表乾密度=2.74g/cm3)
粗骨材1:砕石2005(表乾密度=2.75g/cm3)
粗骨材2:砕石2005(表乾密度=2.71g/cm3) ・ Formulation No3
Cement: Ordinary Portland cement (density = 3.16 g / cm 3 )
Fine aggregate 1: Mountain sand (surface dry density = 2.57 g / cm 3 )
Fine aggregate 2: Crushed sand (surface dry density = 2.74 g / cm 3 )
Coarse aggregate 1: Crushed stone 2005 (surface dry density = 2.75 g / cm 3 )
Coarse aggregate 2: Crushed stone 2005 (surface dry density = 2.71 g / cm 3 )
セメント:普通ポルトランドセメント(密度=3.16g/cm3)
細骨材1:山砂(表乾密度=2.57g/cm3)
細骨材2:砕砂(表乾密度=2.74g/cm3)
粗骨材1:砕石2005(表乾密度=2.75g/cm3)
粗骨材2:砕石2005(表乾密度=2.71g/cm3) ・ Formulation No3
Cement: Ordinary Portland cement (density = 3.16 g / cm 3 )
Fine aggregate 1: Mountain sand (surface dry density = 2.57 g / cm 3 )
Fine aggregate 2: Crushed sand (surface dry density = 2.74 g / cm 3 )
Coarse aggregate 1: Crushed stone 2005 (surface dry density = 2.75 g / cm 3 )
Coarse aggregate 2: Crushed stone 2005 (surface dry density = 2.71 g / cm 3 )
配合No3では、更に以下の各化合物を使用した。
減水剤:AE減水剤遅延形I種(高機能タイプ) シーカメントJR(日本シーカ社製、変性ポリカルボン酸ポリエーテルポリマーと変性ポリオール)をセメント質量に対して1.3%
消泡剤:AFK-2(竹本油脂社製)をセメント質量に対して0.0005%
AE剤:マスターエア202(BASFジャパン製、変性ロジン酸化合物系陰イオン界面活性剤)をセメント質量に対して0.005% In Formulation No. 3, the following compounds were further used.
Water reducing agent: AE water reducing agent Delayed type I (high-performance type) Seekament JR (manufactured by Nippon Seeka Co., Ltd., modified polycarboxylic acid polyether polymer and modified polyol) 1.3% of cement mass
Defoamer: AFK-2 (manufactured by Takemoto Oil & Fat Co., Ltd.) 0.0005% of cement mass
AE agent: Master Air 202 (manufactured by BASF Japan, modified rosin compound-based anionic surfactant) at 0.005% of the cement mass
減水剤:AE減水剤遅延形I種(高機能タイプ) シーカメントJR(日本シーカ社製、変性ポリカルボン酸ポリエーテルポリマーと変性ポリオール)をセメント質量に対して1.3%
消泡剤:AFK-2(竹本油脂社製)をセメント質量に対して0.0005%
AE剤:マスターエア202(BASFジャパン製、変性ロジン酸化合物系陰イオン界面活性剤)をセメント質量に対して0.005% In Formulation No. 3, the following compounds were further used.
Water reducing agent: AE water reducing agent Delayed type I (high-performance type) Seekament JR (manufactured by Nippon Seeka Co., Ltd., modified polycarboxylic acid polyether polymer and modified polyol) 1.3% of cement mass
Defoamer: AFK-2 (manufactured by Takemoto Oil & Fat Co., Ltd.) 0.0005% of cement mass
AE agent: Master Air 202 (manufactured by BASF Japan, modified rosin compound-based anionic surfactant) at 0.005% of the cement mass
試験区分3(コンクリート組成物の試験及び評価)
調製した各コンクリート組成物について、空気量、スランプ、O漏斗流下時間を下記のように測定し、結果を表3にまとめて示した。なお、実施例13及び比較例6では、ポンプ圧送圧力も測定した。 Test category 3 (testing and evaluation of concrete composition)
For each of the prepared concrete compositions, the air volume, slump, and O-funnel flow time were measured as follows, and the results are summarized in Table 3. In Example 13 and Comparative Example 6, the pump pressure was also measured.
調製した各コンクリート組成物について、空気量、スランプ、O漏斗流下時間を下記のように測定し、結果を表3にまとめて示した。なお、実施例13及び比較例6では、ポンプ圧送圧力も測定した。 Test category 3 (testing and evaluation of concrete composition)
For each of the prepared concrete compositions, the air volume, slump, and O-funnel flow time were measured as follows, and the results are summarized in Table 3. In Example 13 and Comparative Example 6, the pump pressure was also measured.
・添加率
水硬性結合材の合計質量に対する、各化合物の質量%を示した。なお、各化合物は、練り混ぜ水の一部として使用した。
・空気量(容量%):
日本工業規格JIS A 1128に準拠して測定した。
・スランプ(cm):
空気量の測定と同時に日本工業規格JIS A 1101に準拠して測定した。
・O漏斗流下時間(秒)
土木学会規準JSCE-F512-2018に準拠してスランプ測定後に測定した。なお、O漏斗流下時間は、その値が小さい方がポンプ圧送性は良好であると判定した。
・ポンプ圧送圧力(MPa)
コンクリートポンプ車「PH50B-17(極東開発社)」を用いて、流速20m3/時間での圧力計指示値の最大値を読み取り、記録し、コンクリートのポンプ圧送圧力(MPa)とした。 -Addition rate The mass% of each compound with respect to the total mass of the hydraulic binder is shown. In addition, each compound was used as a part of kneading water.
・ Air volume (capacity%):
Measured according to Japanese Industrial Standard JIS A 1128.
・ Slump (cm):
At the same time as the air volume was measured, it was measured in accordance with Japanese Industrial Standard JIS A 1101.
・ O funnel flow time (seconds)
The measurement was performed after the slump measurement in accordance with the Japan Society of Civil Engineers standard JSCE-F512-2018. It was determined that the smaller the value of the O funnel flow time, the better the pumping performance.
・ Pump pressure feed pressure (MPa)
Using a concrete pump truck "PH50B-17 (Far East Development Co., Ltd.)", the maximum value of the pressure gauge reading at a flow velocity of 20 m 3 / hour was read and recorded, and used as the concrete pump pumping pressure (MPa).
水硬性結合材の合計質量に対する、各化合物の質量%を示した。なお、各化合物は、練り混ぜ水の一部として使用した。
・空気量(容量%):
日本工業規格JIS A 1128に準拠して測定した。
・スランプ(cm):
空気量の測定と同時に日本工業規格JIS A 1101に準拠して測定した。
・O漏斗流下時間(秒)
土木学会規準JSCE-F512-2018に準拠してスランプ測定後に測定した。なお、O漏斗流下時間は、その値が小さい方がポンプ圧送性は良好であると判定した。
・ポンプ圧送圧力(MPa)
コンクリートポンプ車「PH50B-17(極東開発社)」を用いて、流速20m3/時間での圧力計指示値の最大値を読み取り、記録し、コンクリートのポンプ圧送圧力(MPa)とした。 -Addition rate The mass% of each compound with respect to the total mass of the hydraulic binder is shown. In addition, each compound was used as a part of kneading water.
・ Air volume (capacity%):
Measured according to Japanese Industrial Standard JIS A 1128.
・ Slump (cm):
At the same time as the air volume was measured, it was measured in accordance with Japanese Industrial Standard JIS A 1101.
・ O funnel flow time (seconds)
The measurement was performed after the slump measurement in accordance with the Japan Society of Civil Engineers standard JSCE-F512-2018. It was determined that the smaller the value of the O funnel flow time, the better the pumping performance.
・ Pump pressure feed pressure (MPa)
Using a concrete pump truck "PH50B-17 (Far East Development Co., Ltd.)", the maximum value of the pressure gauge reading at a flow velocity of 20 m 3 / hour was read and recorded, and used as the concrete pump pumping pressure (MPa).
(結果)
表3の実施例1~13に示される結果から明らかなように、本発明により、得られる水硬性組成物のポンプ圧送性を向上させるとともに、スランプと空気量への影響が小さい水硬性組成物用添加剤を提供できることが確認された。なお、実施例13では、比較例6の添加剤なしの条件と比較すると、20m3/時間の吐出時のポンプ圧送圧力が低下し、実際にポンプ圧送性が改善していることが確認された。 (result)
As is clear from the results shown in Examples 1 to 13 in Table 3, the hydraulic composition obtained by the present invention improves the pumping property of the obtained hydraulic composition and has a small effect on the slump and the amount of air. It was confirmed that the additive for use can be provided. In Example 13, it was confirmed that the pump pumping pressure at the time of discharging 20 m 3 / hour decreased and the pump pumping property was actually improved as compared with the condition without the additive of Comparative Example 6. ..
表3の実施例1~13に示される結果から明らかなように、本発明により、得られる水硬性組成物のポンプ圧送性を向上させるとともに、スランプと空気量への影響が小さい水硬性組成物用添加剤を提供できることが確認された。なお、実施例13では、比較例6の添加剤なしの条件と比較すると、20m3/時間の吐出時のポンプ圧送圧力が低下し、実際にポンプ圧送性が改善していることが確認された。 (result)
As is clear from the results shown in Examples 1 to 13 in Table 3, the hydraulic composition obtained by the present invention improves the pumping property of the obtained hydraulic composition and has a small effect on the slump and the amount of air. It was confirmed that the additive for use can be provided. In Example 13, it was confirmed that the pump pumping pressure at the time of discharging 20 m 3 / hour decreased and the pump pumping property was actually improved as compared with the condition without the additive of Comparative Example 6. ..
一方、水硬性組成物用添加剤が配合されていない比較例1、4、6においては、O漏斗流下時間を小さくさせることができないことが確認された。また、比較例2、5においては、オキシアルキレン基を有さない化合物である、いわゆるAE剤を使用しており、その効果によって、ポンプ圧送性は良好ではあるが、空気量が増大した。また、比較例3においては、化合物としてポリエチレングリコールを使用した例であり、この場合、O漏斗流下時間を小さくさせることができないことが確認された。
On the other hand, in Comparative Examples 1, 4 and 6 in which the additive for the hydraulic composition was not blended, it was confirmed that the O-funnel flow time could not be reduced. Further, in Comparative Examples 2 and 5, a so-called AE agent, which is a compound having no oxyalkylene group, was used, and due to the effect, the pumping property was good, but the amount of air increased. Further, in Comparative Example 3, it was an example in which polyethylene glycol was used as the compound, and in this case, it was confirmed that the O funnel flow time could not be reduced.
本発明の水硬性組成物用添加剤は、水硬性組成物を調製する際の添加剤として利用することができる。
The additive for hydraulic composition of the present invention can be used as an additive when preparing a hydraulic composition.
Claims (11)
- 下記一般式(1)で表される化合物を含有する、水硬性組成物用添加剤。
mは1~200の数であって、nは1~20の数であって、かつ、前記m、nが、m×n=1~200となる関係を満たす数であり、AOの内、炭素数2のオキシアルキレン基が50モル%以上である。) An additive for a hydraulic composition containing a compound represented by the following general formula (1).
m is a number from 1 to 200, n is a number from 1 to 20, and m and n satisfy the relationship of m × n = 1 to 200. The oxyalkylene group having 2 carbon atoms is 50 mol% or more. ) - 前記一般式(1)中のAOは、炭素数2~4のオキシアルキレン基である、請求項1に記載の水硬性組成物用添加剤。 The additive for a hydraulic composition according to claim 1, wherein the AO in the general formula (1) is an oxyalkylene group having 2 to 4 carbon atoms.
- 前記一般式(1)中のAOは、炭素数2~3のオキシアルキレン基である、請求項1または2に記載の水硬性組成物用添加剤。 The additive for a hydraulic composition according to claim 1 or 2, wherein the AO in the general formula (1) is an oxyalkylene group having 2 to 3 carbon atoms.
- 前記一般式(1)中のnは、1~6の数であって、かつ、前記m、nが、m×n=1~150となる関係を満たす数である、請求項1~3のいずれか一項に記載の水硬性組成物用添加剤。 The number of claims 1 to 3 in which n in the general formula (1) is a number from 1 to 6 and m and n satisfy the relationship of m × n = 1 to 150. The additive for a hydraulic composition according to any one of the above.
- 前記一般式(1)中のR2は、水素原子、ロジンのアシル残基、炭素数1~4のアルキル基、炭素数2~5のアルケニル基、又は、炭素数3~6の多価アルコールから水酸基を除いた残基である、請求項1~4のいずれか一項に記載の水硬性組成物用添加剤。 R 2 in the general formula (1) is a hydrogen atom, an acyl residue of rosin, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or a polyhydric alcohol having 3 to 6 carbon atoms. The additive for a water-hard composition according to any one of claims 1 to 4, which is a residue obtained by removing a hydroxyl group from the water.
- 前記ロジンが天然ロジンである、請求項1~5のいずれか一項に記載の水硬性組成物用添加剤。 The additive for a hydraulic composition according to any one of claims 1 to 5, wherein the rosin is a natural rosin.
- 前記天然ロジンがガムロジンである、請求項6に記載の水硬性組成物用添加剤。 The additive for a hydraulic composition according to claim 6, wherein the natural rosin is gum rosin.
- 前記一般式(1)中の前記AOの内、炭素数2のオキシアルキレン基が90モル%以上である、請求項1~7のいずれか一項に記載の水硬性組成物用添加剤。 The additive for a hydraulic composition according to any one of claims 1 to 7, wherein the oxyalkylene group having 2 carbon atoms is 90 mol% or more in the AO in the general formula (1).
- 前記一般式(1)中の前記m、nが、m×n=10~100となる関係を満たす数である、請求項1~8のいずれか一項に記載の水硬性組成物用添加剤。 The additive for a hydraulic composition according to any one of claims 1 to 8, wherein m and n in the general formula (1) are numbers satisfying the relationship of m × n = 10 to 100. ..
- 分散剤を含有する、請求項1~9のいずれか一項に記載の水硬性組成物用添加剤。 The additive for a hydraulic composition according to any one of claims 1 to 9, which contains a dispersant.
- 前記分散剤が、リグニンスルホン酸系分散剤、及び、ポリカルボン酸系分散剤からなる群から選ばれる少なくとも1種である、請求項10に記載の水硬性組成物用添加剤。 The additive for a water-hard composition according to claim 10, wherein the dispersant is at least one selected from the group consisting of a lignin sulfonic acid-based dispersant and a polycarboxylic acid-based dispersant.
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JPH01219052A (en) * | 1988-02-27 | 1989-09-01 | Toho Chem Ind Co Ltd | Dispersant composition for cement |
JP2001002457A (en) * | 1999-06-18 | 2001-01-09 | Denki Kagaku Kogyo Kk | Cement admixture and cement composition |
CN104591580A (en) * | 2013-10-30 | 2015-05-06 | 青岛德圣泰建筑安装工程有限公司 | Novel concrete cracking-resistant modifier |
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JP4607321B2 (en) * | 1998-08-14 | 2011-01-05 | コンストラクション リサーチ アンド テクノロジー ゲーエムベーハー | Cement dry molding mixture |
JP5674543B2 (en) | 2011-04-20 | 2015-02-25 | 電気化学工業株式会社 | Spraying method |
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JPH01219052A (en) * | 1988-02-27 | 1989-09-01 | Toho Chem Ind Co Ltd | Dispersant composition for cement |
JP2001002457A (en) * | 1999-06-18 | 2001-01-09 | Denki Kagaku Kogyo Kk | Cement admixture and cement composition |
CN104591580A (en) * | 2013-10-30 | 2015-05-06 | 青岛德圣泰建筑安装工程有限公司 | Novel concrete cracking-resistant modifier |
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