JPH08119702A - Dispersant for cement - Google Patents
Dispersant for cementInfo
- Publication number
- JPH08119702A JPH08119702A JP25335194A JP25335194A JPH08119702A JP H08119702 A JPH08119702 A JP H08119702A JP 25335194 A JP25335194 A JP 25335194A JP 25335194 A JP25335194 A JP 25335194A JP H08119702 A JPH08119702 A JP H08119702A
- Authority
- JP
- Japan
- Prior art keywords
- cement
- dispersant
- weight
- parts
- copolymer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/40—Surface-active agents, dispersants
- C04B2103/406—Surface-active agents, dispersants non-ionic
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/40—Surface-active agents, dispersants
- C04B2103/408—Dispersants
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、セメントスラリー用等
に用いられる分散剤に関するものであり、特には発泡を
制御する効果を持った低起泡性のセメント用分散剤に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dispersant used for cement slurries and the like, and more particularly to a low-foaming cement dispersant having an effect of controlling foaming.
【０００２】[0002]
【従来の技術】従来、セメント用分散剤としてイソブチ
レン−マレイン酸、イソアミレン−マレイン酸、ジイソ
ブチレン−マレイン酸、スチレン−マレイン酸、酢酸ビ
ニル−マレイン酸、ビニルエーテル−マレイン酸などの
ごとき共重合体のアルカリ金属塩、アンモニウム塩、多
価金属塩などの、重合性不飽和モノマーと不飽和ジカル
ボン酸無水物との共重合体の水溶性塩が知られている。
これらのうち、炭素数４〜10の重合性不飽和モノマーと
不飽和ジカルボン酸無水物との共重合体の水溶性塩を土
木、建築分野で使用されるセメントスラリーに用いる
と、セメントスラリー粘度の経時変化が小さく可使時間
が長くなるという効果を発揮する。Conventionally, as a dispersant for cement, a copolymer such as isobutylene-maleic acid, isoamylene-maleic acid, diisobutylene-maleic acid, styrene-maleic acid, vinyl acetate-maleic acid, vinyl ether-maleic acid is used. Water-soluble salts of copolymers of polymerizable unsaturated monomers and unsaturated dicarboxylic acid anhydrides such as alkali metal salts, ammonium salts, and polyvalent metal salts are known.
Among these, when a water-soluble salt of a copolymer of a polymerizable unsaturated monomer having 4 to 10 carbon atoms and an unsaturated dicarboxylic acid anhydride is used for a cement slurry used in the field of civil engineering and construction, the viscosity of the cement slurry is The effect is that the change over time is small and the pot life is long.
【０００３】しかし、該共重合体の水溶性塩は一般に起
泡性を有するので、そのままセメント用分散剤として使
用すると、セメントスラリーが発泡する場合がある。こ
のような場合、セメント用分散剤水溶液の使用時に消泡
剤を添加することにより解決するのが一般的である。し
かし、この方法では使用時の作業工程が増え煩雑だし、
また、消泡剤の使用量は一般に少量であるために定量的
な添加が難しく、添加量の多少によるトラブルの原因と
なっていた。これらの問題点は、あらかじめ消泡剤を添
加したセメント用分散剤水溶液を調製することができれ
ば解決可能である。しかし、消泡剤は概して水に溶解し
難く、特にセメント用分散剤水溶液の固形分濃度が10重
量％以上になるとさらに溶解度は低くなり、この場合に
は消泡効果が低下する。この解決の為に、ＨＬＢ値12以
上のノニオン界面活性剤を使用した分散剤水溶液が提案
されているが発泡抑制の点でまだ満足できるものではな
い。However, since the water-soluble salt of the copolymer generally has a foaming property, when it is used as it is as a dispersant for cement, the cement slurry may foam. In such a case, it is common to solve the problem by adding an antifoaming agent when using the aqueous dispersant solution for cement. However, with this method, the work process during use increases and it is complicated,
In addition, since the amount of the defoaming agent used is generally small, it is difficult to quantitatively add it, which causes troubles depending on the amount added. These problems can be solved if it is possible to prepare an aqueous dispersant solution for cement to which an antifoaming agent has been added in advance. However, the defoaming agent is generally difficult to dissolve in water, and especially when the solid content concentration of the dispersant aqueous solution for cement is 10% by weight or more, the solubility further decreases, and in this case, the defoaming effect decreases. To solve this problem, an aqueous dispersant solution using a nonionic surfactant having an HLB value of 12 or more has been proposed, but it is still unsatisfactory in terms of suppressing foaming.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、前記した従
来技術が有するような問題点がなく、均一に相溶しかつ
消泡効果も充分に発揮する添加剤を見出し、特性の優れ
たセメント用分散剤を提供するためになされたものであ
る。DISCLOSURE OF THE INVENTION The present invention has found out an additive which does not have the problems of the above-mentioned conventional techniques, is compatible with each other and exhibits a sufficient defoaming effect, and has excellent properties. It was made in order to provide a dispersant for use.
【０００５】[0005]
【課題を解決するための手段】本発明のセメント用分散
剤は前記の課題を解決したものであり、これは、１）炭
素数４〜10の重合性不飽和モノマーと不飽和ジカルボン
酸無水物との共重合体のアルカリ金属塩またはアンモニ
ウム塩の固形分換算 100重量部、２）ＨＬＢ値３〜11の
アセチレングリコール 0.1〜８重量部および３）マグネ
シウム化合物 0.2〜25重量部を含有するものである。DISCLOSURE OF THE INVENTION The cement dispersant of the present invention has solved the above-mentioned problems. It comprises: 1) a polymerizable unsaturated monomer having 4 to 10 carbon atoms and an unsaturated dicarboxylic acid anhydride. 100 parts by weight of the alkali metal salt or ammonium salt of a copolymer with 2) in terms of solid content, 2) 0.1 to 8 parts by weight of acetylene glycol having an HLB value of 3 to 11 and 3) 0.2 to 25 parts by weight of a magnesium compound. is there.
【０００６】以下に本発明についてさらに詳細に説明す
る。本発明のセメント用分散剤の第１成分は、炭素数４
〜10の重合性不飽和モノマーとα，β−不飽和ジカルボ
ン酸無水物との共重合体から調製される。共重合体の製
造に使用される重合性不飽和モノマーは炭素数４〜10の
ものであるが、例えばオレフィン化合物、芳香族ビニル
化合物、エステル基、エーテル基等の極性基を有する重
合性不飽和モノマーなどがあげられる。Hereinafter, the present invention will be described in more detail. The first component of the dispersant for cement of the present invention has 4 carbon atoms.
It is prepared from a copolymer of ˜10 polymerizable unsaturated monomers and α, β-unsaturated dicarboxylic acid anhydride. The polymerizable unsaturated monomer used in the production of the copolymer has 4 to 10 carbon atoms, and is a polymerizable unsaturated monomer having a polar group such as an olefin compound, an aromatic vinyl compound, an ester group or an ether group. Examples include monomers.
【０００７】オレフィン化合物の具体例としてはブテン
−１、ブテン−２、イソブチレン、ペンテン−１、ペン
テン−２、２−メチルブテン−１、２−メチルブテン−
２、シクロペンテン、４−メチルペンテン−１、ヘキセ
ン−１、シクロヘキセン、ジイソブチレン、オクテン−
１等、芳香族ビニル化合物としてはスチレン、α−メチ
ルスチレン等があげられる。また、エーテル基、エステ
ル基等の極性基を有するものとしてはビニルエーテル、
酢酸ビニル等があげられる。なかでも炭素数４〜５のオ
レフィン化合物が好ましく、また、必要に応じて２種以
上の重合性不飽和モノマーを併用することもできる。Specific examples of the olefin compound include butene-1, butene-2, isobutylene, pentene-1, pentene-2, 2-methylbutene-1,2-methylbutene-.
2, cyclopentene, 4-methylpentene-1, hexene-1, cyclohexene, diisobutylene, octene-
1, etc. Examples of the aromatic vinyl compound include styrene and α-methylstyrene. Further, vinyl ethers having polar groups such as ether groups and ester groups,
Examples include vinyl acetate. Of these, an olefin compound having 4 to 5 carbon atoms is preferable, and if necessary, two or more kinds of polymerizable unsaturated monomers can be used in combination.
【０００８】α，β−不飽和ジカルボン酸無水物として
は、例えば無水マレイン酸、無水イタコン酸、無水シト
ラコン酸等があげられるが、なかでも無水マレイン酸が
好ましい。この重合性不飽和モノマーとα，β−不飽和
ジカルボン酸無水物とが共重合されて成る共重合体は、
通常、数平均分子量 500〜100,000 、好ましくは 1,000
〜10,000を有し、かつ重合性不飽和モノマー単位20〜80
モル％とα，β−不飽和ジカルボン酸無水物単位80〜20
モル％とから成るものである。Examples of the α, β-unsaturated dicarboxylic acid anhydrides include maleic anhydride, itaconic anhydride, citraconic anhydride and the like, among which maleic anhydride is preferred. A copolymer obtained by copolymerizing this polymerizable unsaturated monomer and α, β-unsaturated dicarboxylic acid anhydride is
Usually number average molecular weight of 500 to 100,000, preferably 1,000
~ 10,000 and polymerizable unsaturated monomer units 20-80
Mol% and α, β-unsaturated dicarboxylic acid anhydride unit 80 to 20
And mol%.
【０００９】該共重合体のアルカリ金属塩またはアンモ
ニウム塩は、通常はラジカル開始剤の存在下に炭素数４
〜10の重合性不飽和モノマーとα，β−不飽和ジカルボ
ン酸無水物との共重合体を合成し、次いで常法に従って
塩基の存在下で該共重合体中の酸無水物基を加水分解す
ることによって製造する。通常、共重合体のカルボキシ
ル基の中和度は20〜 100％である。この際、塩基の使用
量は該共重合体中の酸無水物基１モル当り通常 0.8〜２
モル、好ましくは１〜 1.8モルである。また形成される
塩の種類としては、ナトリウム塩、カリウム塩などのア
ルカリ金属塩またはアンモニウム塩が必須である。二価
以上の多価金属塩の場合には起泡性が大きく、かつ安定
性に劣るため好ましくない。さらに共重合体中のα，β
−不飽和ジカルボン酸無水物部分の一部にエステル基、
アミド基、イミド基を導入することも可能である。ま
た、かかる共重合体の塩は、あらかじめα，β−不飽和
ジカルボン酸無水物を塩基の存在下で加水分解したの
ち、これと重合性不飽和モノマーとを共重合することに
より製造することもできる。The alkali metal salt or ammonium salt of the copolymer usually has 4 carbon atoms in the presence of a radical initiator.
To 10 polymerizable unsaturated monomers and α, β-unsaturated dicarboxylic acid anhydride copolymers are synthesized, and then the acid anhydride group in the copolymer is hydrolyzed in the presence of a base according to a conventional method. To manufacture. Usually, the degree of neutralization of carboxyl groups in the copolymer is 20 to 100%. At this time, the amount of the base used is usually 0.8 to 2 per mol of the acid anhydride group in the copolymer.
The molar amount is preferably 1 to 1.8 mol. In addition, as the type of salt formed, an alkali metal salt such as sodium salt or potassium salt or an ammonium salt is essential. A polyvalent metal salt having two or more valences is not preferable because it has a large foaming property and is inferior in stability. Furthermore, α, β in the copolymer
An ester group as part of the unsaturated dicarboxylic acid anhydride moiety,
It is also possible to introduce an amide group or an imide group. The salt of such a copolymer may also be produced by previously hydrolyzing an α, β-unsaturated dicarboxylic acid anhydride in the presence of a base, and then copolymerizing this with a polymerizable unsaturated monomer. it can.
【００１０】本発明のセメント用分散剤の第２成分はＨ
ＬＢ値が３〜11のアセチレングリコールである。具体例
としては、２，４，７，９−テトラメチル−５−デシン
−４，７−ジオール、３，６−ジメチル−４−オクチン
−３，６−ジオールおよび２，４，７，９−テトラメチ
ル−５−デシン−４，７−ジオールの酸化エチレン付加
体でＨＬＢ値が３〜11のものがあげられる。ＨＬＢ値が
３に満たないアセチレングリコールは固形分濃度が10重
量％以上の高濃度分散剤水溶液中には溶解し難く、ＨＬ
Ｂ値が11を超えるアセチレングリコールは起泡性が大き
くなるし、第３成分であるマグネシウム化合物と組み合
せても十分な消泡効果を示さない。かかるＨＬＢ値が３
〜11のアセチレングリコールは、炭素数４〜10の重合性
不飽和モノマーとα，β−不飽和ジカルボン酸無水物と
の共重合体のアルカリ金属塩またはアンモニウム塩の固
形分換算 100重量部当り、 0.1〜８重量部、好ましくは
0.25〜５重量部の割合で使用される。この際、使用量が
0.1重量部未満では消泡効果に乏しく、逆に８重量部を
超える場合には分散剤水溶液中への溶解性の点で問題が
あり本発明の効果が発揮されない。The second component of the cement dispersant of the present invention is H
It is an acetylene glycol having an LB value of 3 to 11. Specific examples include 2,4,7,9-tetramethyl-5-decyne-4,7-diol, 3,6-dimethyl-4-octyne-3,6-diol and 2,4,7,9-. An ethylene oxide adduct of tetramethyl-5-decyne-4,7-diol having an HLB value of 3 to 11 can be mentioned. Acetylene glycol with an HLB value of less than 3 is difficult to dissolve in a high-concentration dispersant aqueous solution with a solid concentration of 10% by weight or more.
Acetylene glycol having a B value of more than 11 has a high foaming property and does not exhibit a sufficient defoaming effect even when combined with a magnesium compound which is the third component. This HLB value is 3
~ 11 acetylene glycol is 100 parts by weight of the alkali metal salt or ammonium salt of a copolymer of a polymerizable unsaturated monomer having 4 to 10 carbon atoms and an α, β-unsaturated dicarboxylic acid anhydride in terms of solid content, 0.1-8 parts by weight, preferably
It is used in a proportion of 0.25 to 5 parts by weight. At this time, the amount used
If it is less than 0.1 part by weight, the defoaming effect is poor, and if it is more than 8 parts by weight, there is a problem in solubility in the aqueous dispersant solution and the effect of the present invention is not exhibited.
【００１１】本発明のセメント用分散剤の第３成分はマ
グネシウム化合物であり、例えば塩化マグネシウム MgC
l2、炭酸マグネシウム MgCO3、硫酸マグネシウム MgS
O4、水酸化マグネシウム Mg(OH)2等があげられる。理由
は定かでは無いが、これらのマグネシウム化合物は第２
成分のアセチレングリコールと組み合せられて分散剤水
溶液の消泡効果に大きく寄与するものであり、炭素数４
〜10の重合性不飽和モノマーとα，β−不飽和ジカルボ
ン酸無水物との共重合体のアルカリ金属塩またはアンモ
ニウム塩の固形分換算 100重量部当り、 0.2〜25重量
部、好ましくは１〜18重量部の割合で使用される。この
際、使用量が 0.2重量部未満では消泡効果に乏しく、逆
に25重量部を超えてもアセチレングリコールとの相乗効
果による消泡性はもはやそれ以上良くならない。The third component of the cement dispersant of the present invention is a magnesium compound, such as magnesium chloride MgC.
l 2 , magnesium carbonate MgCO 3 , magnesium sulfate MgS
Examples thereof include O 4 and magnesium hydroxide Mg (OH) 2 . Although the reason is not clear, these magnesium compounds are second
It has a carbon number of 4 when it is combined with acetylene glycol as a component and contributes greatly to the defoaming effect of the dispersant aqueous solution.
0.2 to 25 parts by weight, preferably 1 to 100 parts by weight per 100 parts by weight of the alkali metal salt or ammonium salt of the copolymer of the polymerizable unsaturated monomer and the α, β-unsaturated dicarboxylic anhydride. Used in a proportion of 18 parts by weight. At this time, if the amount used is less than 0.2 parts by weight, the defoaming effect is poor, and conversely, if it exceeds 25 parts by weight, the defoaming property due to the synergistic effect with acetylene glycol is no longer improved.
【００１２】本発明のセメント用分散剤は、通常固形分
濃度５〜50重量％、好ましくは10〜40重量％の水溶液で
使用される。また、本発明のアセチレングリコールとマ
グネシウム化合物の組合せは、炭素数４〜10の重合性不
飽和モノマーとα，β−不飽和ジカルボン酸無水物との
共重合体のアルカリ金属塩またはアンモニウム塩以外に
も、グルコン酸、グルコヘプトン酸、乳酸、くえん酸ま
たはそれらのナトリウム塩、カルシウム塩等のオキシカ
ルボン酸系の分散剤に対しても同様に均一に相溶し、か
つ消泡効果を発揮する。The cement dispersant of the present invention is usually used as an aqueous solution having a solid content concentration of 5 to 50% by weight, preferably 10 to 40% by weight. The combination of the acetylene glycol and the magnesium compound of the present invention is not limited to the alkali metal salt or ammonium salt of the copolymer of the polymerizable unsaturated monomer having 4 to 10 carbon atoms and the α, β-unsaturated dicarboxylic acid anhydride. In the same manner, it is equally compatible with oxycarboxylic acid-based dispersants such as gluconic acid, glucoheptonic acid, lactic acid, citric acid or their sodium salts and calcium salts, and exerts a defoaming effect.
【００１３】[0013]
【実施例】つぎに、具体的実施例ならびに比較例をあげ
るが、本発明はこの実施例に限定されるものではない。
なお例中の部および％は重量部と重量％を示す。 実施例１ ラジカル重合によって合成したイソアミレン50モル％と
無水マレイン酸50モル％の共重合体（数平均分子量 6,0
00）のナトリウム塩（中和度60％）の40％水溶液 250部
にサーフィノール440 ［２，４，７，９−テトラメチル
−５−デシン−４，７−ジオールの酸化エチレン付加
体、ＨＬＢ＝５〜７、日信化学工業（株）商品名］1.25
部と硫酸マグネシウム 5.0部を添加してセメント用分散
剤水溶液を調製し、共重合体とアセチレングリコールと
マグネシウム化合物との相溶性を評価した。また、セメ
ント分散試験を行い、セメントスラリーに対する消泡効
果を評価した。結果を表１に示す。なお、これらの評価
は下記の方法で行った。EXAMPLES Next, specific examples and comparative examples will be given, but the present invention is not limited to these examples.
The parts and% in the examples mean parts by weight and% by weight. Example 1 Copolymer of 50 mol% of isoamylene and 50 mol% of maleic anhydride synthesized by radical polymerization (number average molecular weight 6,0
In 40 parts of a 40% aqueous solution of sodium salt of (00) (neutralization degree 60%) Surfynol 440 [2,4,7,9-tetramethyl-5-decyne-4,7-diol ethylene oxide adduct, HLB = 5 to 7, Nisshin Chemical Industry Co., Ltd. product name] 1.25
And 5.0 parts of magnesium sulfate were added to prepare a dispersant aqueous solution for cement, and the compatibility of the copolymer, acetylene glycol and magnesium compound was evaluated. In addition, a cement dispersion test was performed to evaluate the defoaming effect on the cement slurry. The results are shown in Table 1. In addition, these evaluations were performed by the following methods.
【００１４】（相溶性） 〇：透明に相溶、×：２層分
離 （消泡性） セメント分散試験を５℃及び25℃の雰囲気
下で次の方法により行い、セメントスラリーの比重値で
消泡性の評価を行った。ポリエチレン製ビーカーに上記
セメント用分散剤水溶液３部、純水 397部を計量しさら
に市販のポルトランドセメント 400部を加えてホモジナ
イザーで4,000rpmの速度で２分間攪拌する。直ちに得ら
れたセメントスラリーをメスシリンダーに移し、１秒後
のスラリー容積を測定する。そしてスラリー重量とスラ
リー容積から比重を計算する。(Compatibility) ◯: Transparent compatibility, ×: Separation of two layers (Defoaming property) A cement dispersion test was conducted by the following method in an atmosphere of 5 ° C. and 25 ° C. The foamability was evaluated. In a polyethylene beaker, 3 parts of the above cement dispersant aqueous solution and 397 parts of pure water are weighed, 400 parts of commercially available Portland cement is added, and the mixture is stirred with a homogenizer at a speed of 4,000 rpm for 2 minutes. Immediately, the obtained cement slurry is transferred to a measuring cylinder, and the volume of the slurry after 1 second is measured. Then, the specific gravity is calculated from the slurry weight and the slurry volume.
【００１５】実施例２〜７、比較例１〜５ 実施例１と同様にして表１に示される共重合体水溶液、
アセチレングリコール、マグネシウム化合物の種類、量
比でセメント用分散剤水溶液を調製し、同様の方法で相
溶性、消泡性を評価した。結果は表１に示すとおりであ
った。Examples 2 to 7, Comparative Examples 1 to 5 In the same manner as in Example 1, the aqueous copolymer solution shown in Table 1,
A dispersant aqueous solution for cement was prepared according to the kind and the amount ratio of acetylene glycol and magnesium compound, and the compatibility and defoaming property were evaluated by the same method. The results are as shown in Table 1.
【００１６】[0016]
【表１】 [Table 1]
【００１７】[0017]
【発明の効果】本発明により、セメントスラリーに対す
る優れた消泡性、相溶性を発揮するセメント用分散剤が
提供された。The present invention provides a dispersant for cement which exhibits excellent defoaming property and compatibility with cement slurry.
Claims (1)
ーと不飽和ジカルボン酸無水物との共重合体のアルカリ
金属塩またはアンモニウム塩の固形分換算 100重量部、
２）ＨＬＢ値３〜11のアセチレングリコール 0.1〜８重
量部および３）マグネシウム化合物 0.2〜25重量部を含
有するセメント用分散剤。1. A 100 parts by weight of an alkali metal salt or an ammonium salt of a copolymer of a polymerizable unsaturated monomer having 4 to 10 carbon atoms and an unsaturated dicarboxylic acid anhydride in terms of solid content,
A dispersant for cement containing 2) 0.1 to 8 parts by weight of acetylene glycol having an HLB value of 3 to 11 and 3) 0.2 to 25 parts by weight of a magnesium compound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25335194A JP3490155B2 (en) | 1994-10-19 | 1994-10-19 | Dispersant for cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25335194A JP3490155B2 (en) | 1994-10-19 | 1994-10-19 | Dispersant for cement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08119702A true JPH08119702A (en) | 1996-05-14 |
| JP3490155B2 JP3490155B2 (en) | 2004-01-26 |
Family
ID=17250129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25335194A Expired - Fee Related JP3490155B2 (en) | 1994-10-19 | 1994-10-19 | Dispersant for cement |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3490155B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012102010A (en) * | 2006-10-26 | 2012-05-31 | Air Products & Chemicals Inc | Powdered acetylenic surfactant and composition containing the same |
-
1994
- 1994-10-19 JP JP25335194A patent/JP3490155B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012102010A (en) * | 2006-10-26 | 2012-05-31 | Air Products & Chemicals Inc | Powdered acetylenic surfactant and composition containing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3490155B2 (en) | 2004-01-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5997630A (en) | Concrete accelerators | |
| AU672625B2 (en) | Stabilised magnesium hydroxide slurries | |
| JPS59223798A (en) | General detergent composition | |
| JPH0853522A (en) | Dispersant for aqueous slurry | |
| US5169894A (en) | Lowering of anionic loading of dispersants on pigment slurries by blending with nonionic polymers | |
| JP3490155B2 (en) | Dispersant for cement | |
| JPH09309756A (en) | Powdery admixture for cement | |
| JPH1060207A (en) | Water-soluble film | |
| JPH0543288A (en) | Cement dispersing agent composition | |
| JPH09142905A (en) | Concrete admixture | |
| JP3265784B2 (en) | Additive for cement | |
| JP2926408B2 (en) | Aqueous dispersion of calcium carbonate and method for producing the same | |
| JP2005046679A (en) | Scale inhibitor | |
| JPH0543287A (en) | Cement dispersant | |
| JPH06256056A (en) | Bleeding-reducing agent for cement-based grout | |
| JPS58173142A (en) | Novel aqueous polyelectrolyte solution | |
| JP2005343748A (en) | Dispersant composition for hydraulic composition | |
| JP7450428B2 (en) | Method for manufacturing cleaning composition | |
| JP3412185B2 (en) | Aqueous suspension of lauroyl peroxide | |
| JPH06863B2 (en) | Stabilization method of paste solution by thermochemically modified starch | |
| JP2000351992A (en) | Surfactant composition | |
| JP4105065B2 (en) | Sizing agent for paper | |
| JPH06166773A (en) | Homogeneous polymer aqueous solution, its production and cement-dispersing agent | |
| WO2023229956A1 (en) | Vinyl ester latex | |
| JPH1025309A (en) | Emulsifier for emulsion polymerization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313532 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121107 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121107 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 10 Free format text: PAYMENT UNTIL: 20131107 |
|
| LAPS | Cancellation because of no payment of annual fees |