JPS5874552A - Cement dispersant - Google Patents

Cement dispersant

Info

Publication number
JPS5874552A
JPS5874552A JP17282981A JP17282981A JPS5874552A JP S5874552 A JPS5874552 A JP S5874552A JP 17282981 A JP17282981 A JP 17282981A JP 17282981 A JP17282981 A JP 17282981A JP S5874552 A JPS5874552 A JP S5874552A
Authority
JP
Japan
Prior art keywords
monomer
parts
copolymer
meth
cement
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
Application number
JP17282981A
Other languages
Japanese (ja)
Other versions
JPS5918338B2 (en
Inventor
椿本 恒雄
細井戸 正博
田原 秀行
健 枚田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Shokubai Co Ltd
Original Assignee
Nippon Shokubai Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Nippon Shokubai Co Ltd filed Critical Nippon Shokubai Co Ltd
Priority to JP17282981A priority Critical patent/JPS5918338B2/en
Publication of JPS5874552A publication Critical patent/JPS5874552A/en
Publication of JPS5918338B2 publication Critical patent/JPS5918338B2/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24Macromolecular compounds
    • C04B24/26Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B24/2641Polyacrylates; Polymethacrylates
    • C04B24/2647Polyacrylates; Polymethacrylates containing polyether side chains
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/40Surface-active agents, dispersants
    • C04B2103/408Dispersants

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 ′    本兇′明はセメント分散剤口Iるしの(゛あ
る。
DETAILED DESCRIPTION OF THE INVENTION This article describes the use of cement dispersants.

近年、pルタルエ門やコンクリート1事においてでの作
業性の改善、強疫や耐久性の向上、ひびわれ性のi減少
あるいはその池の物性の向上を目的勺:、t7でセメン
ト分散剤を使用づることが一一般化している。
In recent years, cement dispersants have been used with the aim of improving workability in Plutaruemon and concrete work, improving resistance to strong corrosion, improving durability, reducing cracking, or improving the physical properties of the pond. This is becoming common.

従来、セメント分散剤としてリグニンスルホン酸塩、グ
ルコン酸やグルコヘプトン酸等の塩、ナフタレンスルホ
ン酸・ホルマリン綜合物塩、ポリサッカライド、/塩化
カルシウム/[・リエタノールアミン配合組成物などが
利用されている。リグニンスルホン酸塩は亜硫酸パルプ
製造工程より得られるものであるが、その減水効果にバ
ラツキがあり、また、空気混入量の増大によりモルタル
やコンクリートなどの物性に悪影響を与えることがある
等の欠点がある。グリコン酸やグルコヘプトン酸等の塩
は、高い流動性を確保するために添加量を多くすると著
しい硬化遅延性及び硬化不良を示し、利用上の大きな障
害となっている。又ナフタレンスルホン酸・ホルマリン
縮合物、塩は、グルコン酸やグルコヘプトン酸等の塩な
どにくらべ、添加量の少な0範囲では減水効果が小さい
のが一般的で、高い流動性を確保する為には多−に添加
する必′:Wがある。ポリサッカライド系のセメント分
散剤1%、、シてはデンプン加水分解物があるが、これ
畢独使□用では硬化遅延性が大きいた −め、通常塩化
カルシウムや水溶性アミンと併用されている。しかし塩
化カルシウムは鉄筋の防錆上有害である。
Conventionally, lignin sulfonates, salts of gluconic acid and glucoheptonic acid, naphthalene sulfonic acid/formalin composite salts, polysaccharides, /calcium chloride/[-reethanolamine combination compositions, etc. have been used as cement dispersants. . Lignosulfonate is obtained from the sulfite pulp manufacturing process, but its water-reducing effects vary, and it also has drawbacks such as an increase in the amount of air mixed in, which can adversely affect the physical properties of mortar and concrete. be. Salts such as glyconic acid and glucoheptonic acid show significant curing retardation and curing failure when added in large amounts in order to ensure high fluidity, which is a major obstacle in their use. In addition, naphthalene sulfonic acid/formalin condensates and salts generally have a small water-reducing effect when added in a small amount in the 0 range, compared to salts such as gluconic acid and glucoheptonic acid. It is necessary to add a large amount of W. Polysaccharide-based cement dispersant 1% is a starch hydrolyzate, but this is usually used in combination with calcium chloride or water-soluble amine because it has a large hardening delay when used exclusively. . However, calcium chloride is harmful to the rust prevention of reinforcing steel.

本発明はこのような現状に1み、従来のしメン分散効果
を示し他の物性に悪影響を与えないセメント分散剤を提
供するものである。
In view of the current situation, the present invention provides a cement dispersant that exhibits the conventional cement dispersing effect and does not adversely affect other physical properties.

即ち本発明は、 一般式              ゛ ・□    
     、 R1′ 1          。
That is, the present invention has the general formula ゛ ・□
, R1′ 1 .

CH2=C−Co→RO九−−R 11 で示されるポリアルキレンゲコールモノ(メタ)アクリ
ル酸”エステル゛系単量体(イ)、(以下、単量体(イ
)という。) 般式 %式% で示される(メタ)アクリル酸系単量体(ロ)(以下、
重量体(ロ)という。) 及びこれらの単量体と共重合可能な単量体(ハ)(以下
、単量体(ハ)という。)を、 ポリアルキレングリコールモノ(メタ)アクリル酸エス
テル系単一体(イ)1′0〜95重量%、(メタ)アク
リル酸系重ω体(ロ)90〜5重量%及び単量体(ハ)
0〜50重量%(−但し、(イ)、(ロ)及び(ハ)6
合計は100重量%である。
Polyalkylene glycol mono(meth)acrylic acid "ester" monomer (A) represented by CH2=C-Co→RO9--R 11 (hereinafter referred to as monomer (A)) General formula (Meth)acrylic acid monomer (b) represented by the % formula % (hereinafter,
It is called a heavy body (b). ) and a monomer (c) copolymerizable with these monomers (hereinafter referred to as monomer (c)), a polyalkylene glycol mono(meth)acrylic acid ester monomer (a) 1' 0 to 95% by weight, (meth)acrylic acid heavy omega substance (b) 90 to 5% by weight, and monomer (c)
0 to 50% by weight (-However, (a), (b) and (c) 6
The total is 100% by weight.

)の比率で用いて導かれた共重合体(A)及び7′又は
該共−合体(A)”を更にアルカリ性物質で中和して得
られた共重合体(B)を主成分とするセメント分散剤に
関するものである。
) The main components are copolymers (A) and 7' or copolymers (B) obtained by further neutralizing the copolymers (A)'' with an alkaline substance. This invention relates to cement dispersants.

本発明で用いられる単量体(イ)は、前記一般式で示さ
れるものであり、公知の方法で得ることが(゛きる。単
量体(イ)の例としては、ポリIJレンゲリコールモノ
(メ プロピレングリコールモノ(メタ)アクリレ−1へ、ボ
らブチレングリコールモノ(メタ)アクリレ−I・、メ
トキシポリエチレングリ”コールモノ(メタ)アクリレ
ート、メトキシポリプロピレングリ」−ルモノ(メタ)
アクリレート、メトキシポリブチレングリコールモノ(
メタ)アクリレート、1ト1−シポリエチレングリコ レート、エトキシポリブチレングリコールモノ(メタ)
アクリレート、エトキシポリブチレングリコールモノ(
メタ)アクリレート等を挙げることができ、これらの1
種又は21種以上を用い・シことができる。     
 ゛ 単量体(0)は、前記−□般゛式で示されるものである
。単量体(ロ)の例としては、アクリル酸、メタクリル
酸並びにそれらの−画金属塩、二価金属塩、アンモニウ
ム塩及び有機アミン塩を挙げることができ、これらの1
秤又【、L2秤以トを用いることができる。
The monomer (A) used in the present invention is represented by the general formula above, and can be obtained by a known method. Examples of the monomer (A) include poly IJ range glycol monomer. (to mepropylene glycol mono(meth)acrylate-1, borabutylene glycol mono(meth)acrylate-I, methoxypolyethylene glycol mono(meth)acrylate, methoxypolypropylene glycol mono(meth)acrylate
Acrylate, methoxypolybutylene glycol mono(
meth)acrylate, 1-1-cypolyethylene glycolate, ethoxypolybutylene glycol mono(meth)
Acrylate, ethoxypolybutylene glycol mono(
meth)acrylates, etc., and one of these
Seeds or 21 or more types can be used.
Monomer (0) is represented by the above-mentioned formula -□. Examples of the monomer (b) include acrylic acid, methacrylic acid, and their metal salts, divalent metal salts, ammonium salts, and organic amine salts.
A scale or L2 scale can be used.

単量体(ハ)は、単量体(、イ)及び単量体([1)と
共重合可能な単量体である。単一体(ハ)の例としては
、炭素数1〜20個の脂肪族アルコールと(メタ)アク
リル酸とのエステル;(メタ)アクリルアミド;マレイ
ン酸、フマル酸、あるいはこれらの酸と炭素数1〜−2
0111i1の脂肪族アルコールまたは炭素数2〜4個
のグリコールもしくはこれらのグリコールの付加モル数
2〜100のポリアルキレングリコールとのモノエステ
ルあるいはジエステル;酢酸ビニル、酢酸プロペニル等
の酢酸アルケニルエステル;スルシン、p−メチルスチ
レン、スチレンスルホン酸等の芳香族ビニル;塩化ビニ
ル、等を挙げることができ、これらの1種又は2種以上
を用いることができる。単一体(ハ)は、、得られ・る
゛、共重合体(A)又は共重合体(B)が水溶性となt
範囲の量で、単量体(イ)、単量体く口)及びltj量
体(ハ)の合計に対して50重置%以下の範囲で用いる
ものである。
Monomer (iii) is a monomer that can be copolymerized with monomer (a) and monomer ([1)]. Examples of the simple substance (c) include esters of aliphatic alcohols having 1 to 20 carbon atoms and (meth)acrylic acid; (meth)acrylamide; maleic acid, fumaric acid, or esters of these acids with 1 to 20 carbon atoms; -2
0111i1 aliphatic alcohol or glycol having 2 to 4 carbon atoms, or monoester or diester of these glycols with polyalkylene glycol having an addition mole number of 2 to 100; alkenyl acetate esters such as vinyl acetate and propenyl acetate; sulcine, p - Aromatic vinyls such as methylstyrene and styrene sulfonic acid; vinyl chloride, etc., and one or more of these can be used. The monomer (c) is obtained when the copolymer (A) or copolymer (B) is water-soluble.
It is used in an amount within a range of 50% by weight or less based on the total of monomer (a), monomer (a) and ltj polymer (c).

共重合体(A)は、中量体(イ)、甲拳(4(【。1)
及び要すれば単量体(ハ)を前記特定比率t・用゛(1
て導びかれたものである。この比率の範囲を11ずれる
と優れた性能のセメント分散剤は得られな0゜共重合体
(A)を!!逸する゛には、重合開始剤を用いて前記単
量体成分を共重合させればよ(′S、1(手合は溶媒中
での重合や塊状重合等の方法番こにり行うことができる
Copolymer (A) is intermediate polymer (A), Koken (4 ([.1)
and, if necessary, the monomer (c) at the specified ratio t・(1
This is what I was guided by. If you deviate from this ratio range by 11, you will not be able to obtain a cement dispersant with excellent performance.0° copolymer (A)! ! In order to avoid this, the above monomer components can be copolymerized using a polymerization initiator ('S, 1) (Procedures can be carried out using methods such as polymerization in a solvent or bulk polymerization. can.

溶媒中での重合は回分式でも連続式でも行うことができ
、その際使用される溶媒としては、゛′氷水:チルアル
コール、エチルアルコール1.イソプロピルアルコール
等の低級アルコール;ベンゼン、1〜ルエン、キシレン
、シクロヘキサン、n−へ1サン等の芳香族あるいは脂
肪族炭化水lA:酢酸−[チル:÷セトン、メチルエチ
ルケトン等のケI・〉・化合物等が挙げられる。原m*
’置体及び得られる共重合体(Δ)の溶解性並びに該共
重合体(A)の使用時の便からは、水及び炭素数1〜・
4の低級アルコールよりなる群から選ばれた少なくとし
1種を用いることが好ましい二次素数1〜4の低級アル
コールの中でもメチルアルコール、エチルアルコール、
イソプロピルアルコールが特に有効である。
Polymerization in a solvent can be carried out either batchwise or continuously, and the solvents used in this case include: 1.Ice water: methyl alcohol, ethyl alcohol. Lower alcohols such as isopropyl alcohol; Aromatic or aliphatic hydrocarbons such as benzene, 1-toluene, xylene, cyclohexane, n-hexane; etc. Hara m*
From the solubility of the copolymer (Δ) obtained and the ease of use of the copolymer (A), it is clear that the copolymer (A) has 1 to 1 carbon atoms.
Among the lower alcohols with a secondary prime number of 1 to 4, it is preferable to use at least one selected from the group consisting of lower alcohols with a secondary prime number of 1 to 4, methyl alcohol, ethyl alcohol,
Isopropyl alcohol is particularly effective.

・水媒体中で重合を行なう時は、重合開始剤としてアン
モニウム又はアルカリ金属の過硫酸塩あるいは過酸化水
素等の水溶性の重合開始剤が使用される。この際亜硫酸
水素ナト・リウム等の促進剤を併用づること□もできる
。又、低級アルコ−ル、芳香族炭化水素、脂肪族炭化水
素、酢酸エチルあるいはケトン化合物を溶媒とりる重合
には、ベンゾイルパーオキシドやラウロイルパーオキシ
ド等のパーオキシド;クメンハイ゛ド、ロバ−オキシド
等のハイドロパーオキシド;アゾビス・イソブブロニ]
・リル等の脂肪族アゾ化合物等が重合開始剤として用い
られる。この際”アミン化合物等の促進剤を(Jf用す
ることもで“きる。更に、水−低級アルコール混合rB
W、を用いる場合には、上記の種々の重合開始剤あるい
は重合開始剤と促進剤の□組合せの中から適宜選択して
用いることができる。重合温度は、用いられる溶媒や重
合開始剤により適宜定められるが、通常O〜120℃の
範囲内で行なわれ、う。
- When polymerization is carried out in an aqueous medium, a water-soluble polymerization initiator such as ammonium or alkali metal persulfate or hydrogen peroxide is used as the polymerization initiator. At this time, it is also possible to use an accelerator such as sodium/lium hydrogen sulfite. In addition, for polymerization using lower alcohols, aromatic hydrocarbons, aliphatic hydrocarbons, ethyl acetate, or ketone compounds as solvents, peroxides such as benzoyl peroxide and lauroyl peroxide; cumene hydride, roba oxide, etc. Hydroperoxide; azobis isobubroni]
・Aliphatic azo compounds such as lyl are used as polymerization initiators. At this time, it is also possible to use an accelerator such as an amine compound (Jf).Additionally, a water-lower alcohol mixture rB
When W is used, it can be appropriately selected from among the various polymerization initiators or combinations of polymerization initiators and accelerators mentioned above. The polymerization temperature is appropriately determined depending on the solvent and polymerization initiator used, but it is usually carried out within the range of 0 to 120°C.

塊状重合は、重合開始剤としてベンゾCルパオキシドや
ワウ0イルバーAキシド笠のパルAsシト;クメンハイ
ドロパーオキシド等のハイドロ脂肪族アゾ化合物等を用
い、5o〜150℃の温度範囲内で行われる。
The bulk polymerization is carried out within a temperature range of 5°C to 150°C using a hydroaliphatic azo compound such as benzo C lupaoxide, cumene hydroperoxide, etc. as a polymerization initiator.

このようにして得られた共重合体(A)は、そのままで
もセメント分散剤の主成分として用いら和して得られる
共重合体(B)をセメント分散剤り性物質としては、−
価金属及び二[l金属の水酸化物、塩化物及び炭酸塩:
アンモニ7’ : (4機アミン等が好ましいものとし
て挙げ1ら”れる。
The copolymer (A) thus obtained can be used as it is or as the main component of a cement dispersant, and the resulting copolymer (B) can be used as a cement dispersant as a -
Hydroxides, chlorides and carbonates of valence metals and dimetals:
Ammonium 7': Preferred examples include 4-unit amines.

また共重合体(A)の分子量は広い範囲のむのが使用で
きるが、500〜・5(0,000の範囲内のものが共
重合体(Δ)及び/又は共重合体(B)は、これらそれ
ぞれの単独又は混合物をでのままセメント分散剤として
使用するJどができる。また、共重合体(A)及び/又
は共重合体(B、)を主成分とし他の公知のセメント混
和剤と組み合わせて使用する際、このような公知のセメ
ント混和剤としては、例えば従来のセメント分散剤、空
気連行剤、セメント湿潤分散剤、防水剤、強度増進剤、
硬化促進剤等を挙げることができる。
In addition, the molecular weight of the copolymer (A) can be used in a wide range, but those in the range of 500 to 5 (0,000) are the copolymer (Δ) and/or the copolymer (B). , each of these alone or a mixture can be used as a cement dispersant as is.In addition, other known cement admixtures containing copolymer (A) and/or copolymer (B) as main components can be used. When used in combination with agents, such known cement admixtures include, for example, conventional cement dispersants, air entraining agents, cement wetting and dispersing agents, waterproofing agents, strength enhancers,
Examples include hardening accelerators.

本発明のセメント分散剤は、ポルトランドセメント、ア
ルミナセメント、各種混合セメント等の水硬セメント、
あるいは石8Mのセメント以外の水硬材料等に用いるこ
とができる。
The cement dispersant of the present invention is suitable for hydraulic cements such as portland cement, alumina cement, and various mixed cements;
Alternatively, it can be used for hydraulic materials other than stone 8M cement.

本発明のセメント分散剤は、従来のセメント分散剤に比
較して少量の添加でも優れた効果を発揮する。例えば水
硬セメントを用いるモルタルやコンクリート等に1使用
する場合には、セメント重量(7) 0.01〜1.0
%、好tL<Lt O,02〜0.7%となる比率の量
を−り混ぜの際に添加すればよい。
The cement dispersant of the present invention exhibits excellent effects even when added in small amounts compared to conventional cement dispersants. For example, when using 1 for mortar or concrete using hydraulic cement, the cement weight (7) 0.01 to 1.0
%, preferably tL<LtO, 02 to 0.7% may be added at the time of mixing.

この添加によりスランプの増大、水量の低減等の各種の
好ましい諸効果がちたらされる。添加量が0、01%未
満では性能的に不十分であり、逆に1.0%を超える多
量を使用してもでの効果は実質上頭打ちとなり、経済性
の面からも不利となる。
This addition brings about various favorable effects such as increased slump and reduced water volume. If the amount added is less than 0.01%, the performance will be insufficient.On the other hand, if the amount added exceeds 1.0%, the effect will substantially reach a plateau, and this will be disadvantageous from an economic point of view.

また本発明のセメント分散剤をポルトランドセメント、
アルミナセメント、石膏、石灰等の複合組成からなる硬
化速度の著しく速い急硬性セメントに添加する際には、
共重合体(A)や共重合体(B)を導く単量体の組成及
びセメントに対づる添加量を調節することにより、所望
の流動性と凝結遅延性とを得ることができる。
Furthermore, the cement dispersant of the present invention can be used for portland cement,
When adding to rapidly hardening cement, which has a complex composition such as alumina cement, gypsum, and lime, and has an extremely fast hardening speed,
By adjusting the composition of the monomers leading to copolymer (A) and copolymer (B) and the amount added to the cement, desired fluidity and setting retardation can be obtained.

般に、カルボキシル基を有する分散剤はセメント粒子上
・に強く吸着することによりこれらのfX1了を水中に
有効に分散させる。しかしその強い吸着性のために水和
反応を妨げ、その結果、硬化を大きく遅延させる傾向が
ある。
Generally, dispersants having carboxyl groups effectively disperse these fX1 molecules in water by strongly adsorbing them onto cement particles. However, due to their strong adsorption properties, they tend to impede the hydration reaction and, as a result, significantly retard curing.

一方、本発明のセメント分散剤では、主成分で拠る共重
合体(A)及び/又は共重合体(B)は1分子中にエチ
レンオキシド付加物という非イオン性の蝙水基とアニオ
ン性のカルボキシル基とを有しており、前者の親水性及
び立体障害によって後者のセメント粒子への吸着を抑制
し、その結果、従来のカルボキシル基を右づる分散剤に
くらべて凝結遅延効果が少なく、かつ優れた分散性能を
発揮するものと考えられる。しかし、このような理由に
より本発明のセメント分散剤が何ら制限を受けるもので
はない。
On the other hand, in the cement dispersant of the present invention, the copolymer (A) and/or copolymer (B) based on the main components contain a nonionic hydroxide group called an ethylene oxide adduct and an anionic carboxyl group in one molecule. The hydrophilicity and steric hindrance of the former suppresses the adsorption of the latter onto cement particles, resulting in less setting retardation and superior dispersants compared to conventional dispersants based on carboxyl groups. It is thought that this material exhibits excellent dispersion performance. However, the cement dispersant of the present invention is not limited in any way by this reason.

次に本発明のセメント混和剤について参考例及び実施例
を挙げて更に詳細に説明するが、もちろん本発明はこれ
だけに限定されるものではない。
Next, the cement admixture of the present invention will be described in more detail with reference to Reference Examples and Examples, but the present invention is of course not limited thereto.

尚、例中特にことわりのない限り%は重量%を、また部
は重量部を表わすものとする。
In the examples, unless otherwise specified, % means % by weight, and parts represent parts by weight.

参考例 1 温度計、撹拌機、滴下ロート、ガス導入管及び還流冷却
器を備えたガラス製反応容器にイソプロピルアルコール
(以下、IPAど略す。)390部を仕込み、撹拌下に
反応容器内を窒素置換し、窒素雰囲気中で沸点まで加熱
した。次いでメト4−シボリエヂレングリコールモノメ
タアクリレート(“NK−エステルM−9G”新中村化
学■製、エチレンオキサイドの平均付加モル数9個)1
33部、メタアクリル酸27部、ベンゾイルパーA4シ
ト2.44部及びII”、A240部からなる混合物を
120分で添加し、添加終了後更に0.49部のベンゾ
イルパーオキシドをIPA10部に分散させたものを3
0分毎に、2回に分けて添加した。モノマーの添加完結
後、120分間沸点に温度を保持して重合反応を完了さ
せた。その後、ノjセイソーダ水溶液にて完全中和を行
ない、IrAを留去して共重合体(1)の水溶液を得た
、。この共重合体(1)の40%水溶液のP H及び粘
醜は第1表に示した通りであった。
Reference Example 1 390 parts of isopropyl alcohol (hereinafter abbreviated as IPA) was charged into a glass reaction vessel equipped with a thermometer, a stirrer, a dropping funnel, a gas introduction tube, and a reflux condenser, and the inside of the reaction vessel was flushed with nitrogen while stirring. The mixture was evaporated and heated to boiling point under a nitrogen atmosphere. Next, metho-4-cibolyethylene glycol monomethacrylate (“NK-Ester M-9G” manufactured by Shin Nakamura Chemical ■, average number of added moles of ethylene oxide: 9) 1
A mixture consisting of 33 parts of methacrylic acid, 27 parts of benzoyl peroxide, 2.44 parts of benzoyl peroxide, and 240 parts of II'', A4 was added over 120 minutes, and after the addition was complete, 0.49 parts of benzoyl peroxide was further dispersed in 10 parts of IPA. 3
It was added in two portions every 0 minutes. After the monomer addition was completed, the temperature was maintained at the boiling point for 120 minutes to complete the polymerization reaction. Thereafter, complete neutralization was carried out with an aqueous sodium chloride solution, and IrA was distilled off to obtain an aqueous solution of copolymer (1). The PH and viscosity of a 40% aqueous solution of this copolymer (1) were as shown in Table 1.

参考例1と同じ反応容器にメタノール390部を仕込み
、撹拌下に反応容器内を窒素置換し、窒素雰囲気中1沸
点まで加熱した。次いでポリ1ブレングリコールモノメ
タアaリレート(、゛ブレンマーF’[E350”日本
油脂□■製、エヂレンAキサ゛イドの平均付加モル数7
〜9個)96部、アクリル酸64部、アゾビスイソブチ
ロニトリル6.67部及びメタノール240部からなる
混合物を120分で添加し、添加終了後更に1.33部
♀アゾビスイソブグロニトリルをメタノール10部にと
かしたものを30分毎に2回に分けて添加した。
390 parts of methanol was charged into the same reaction vessel as in Reference Example 1, and the inside of the reaction vessel was replaced with nitrogen while stirring, and heated to 1 boiling point in a nitrogen atmosphere. Next, the average number of moles added of poly 1-blene glycol monomethaarylate (Blemmer F'[E350'' manufactured by NOF □■, ethylene A oxide) was 7.
A mixture consisting of 96 parts of acrylic acid, 6.67 parts of azobisisobutyronitrile, and 240 parts of methanol was added over 120 minutes, and after the addition was completed, an additional 1.33 parts of ♀ azobisisobutyronitrile was added. Nitrile dissolved in 10 parts of methanol was added in two portions every 30 minutes.

七ツマ−の添加完結後、120分間沸点に瀉疾を保持し
て重合反応を完了させた。その後、・カセイソーダ水溶
液にて完全中和を行ない、メタノールを留去して共重合
体(2)の水溶液を得た。この共重合体(2)の40%
水溶液のPH及び粘度は第1表に示した通りであった。
After the completion of addition of the 7-mer, the polymerization reaction was completed by maintaining the temperature at the boiling point for 120 minutes. Thereafter, complete neutralization was performed with an aqueous solution of caustic soda, and methanol was distilled off to obtain an aqueous solution of copolymer (2). 40% of this copolymer (2)
The pH and viscosity of the aqueous solution were as shown in Table 1.

参考例 3 参考例1と同じ反応容器に水560.7部を仕込み、撹
拌下に反応容器内を窒素置換し、窒素雰囲気中で95℃
まで加熱した。次いでメトキシポリエチレングリコール
モノメタアクリレート(″NK−エステルM−23G”
、新中村化学■製、エチレンオキサイド平均付加モル数
23個)75部、アクリルl1125部及び水300部
からなるモノマー混含溶液七5%過硫酸アンモニウム水
溶液34.5部とのそれぞれを120分で添加し、添加
終了後更に6%過硫酸アンモニウム水溶液6゜8部を2
0分間で添加した。上記モノマー混合溶液の添加完結後
、120分B95℃に温度を保持し、重合反応を完了さ
せた。その後、カセイソーダ水溶液にて完全中和を行な
い、共重合体(3)の水溶液を得た。この共重合体(3
)の40%水溶液のPH及び粘度は第1表に示した通り
であった。
Reference Example 3 560.7 parts of water was placed in the same reaction vessel as in Reference Example 1, the inside of the reaction vessel was replaced with nitrogen while stirring, and the temperature was heated to 95°C in a nitrogen atmosphere.
heated to. Next, methoxypolyethylene glycol monomethacrylate ("NK-ester M-23G"
, manufactured by Shin Nakamura Chemical ■, 75 parts of ethylene oxide (average number of moles added: 23), 75 parts of a monomer-containing solution consisting of 1125 parts of acrylic l, and 300 parts of water, and 34.5 parts of a 5% ammonium persulfate aqueous solution were added over 120 minutes. After the addition was complete, add 2.8 parts of 6% ammonium persulfate aqueous solution.
Added in 0 minutes. After the addition of the monomer mixture solution was completed, the temperature was maintained at 95° C. for 120 minutes to complete the polymerization reaction. Thereafter, complete neutralization was performed with a caustic soda aqueous solution to obtain an aqueous solution of copolymer (3). This copolymer (3
The pH and viscosity of a 40% aqueous solution of ) were as shown in Table 1.

参考例 4 参考例1と同じ反応容器にIPA390部を仕込み、撹
拌下に反応容器内を窒素置換し、窒素雰囲気中で沸点ま
で加熱した。次いでポリプロピレングリコールモノメタ
アクリレート(“プレンマーPP−1000”日本油脂
■製、プロピレンオキサイド平均付加モル数5〜6個)
91部、アクリル酸69部、ベンゾイルパーオキシド4
.80部及びIPA240部からなる!合物を120分
で添加し、添加終了後更に0.96部のベンゾイルパー
オキシドをIPA10部に分散させたものを30分毎に
2回に分けて添加した。モノマーの添加完結後、120
分間沸点に温度を保持して重合反応を完了させた。その
後、カセイソーダ水溶液にて完全中和を行ない、IF”
’Aを留去して共重合体(4)の水溶液を得た。この共
重合体(4)−の40%水溶液のP H及び粘度は第1
表に示した通りであった。
Reference Example 4 390 parts of IPA was charged into the same reaction vessel as in Reference Example 1, and the inside of the reaction vessel was replaced with nitrogen while stirring, and heated to the boiling point in a nitrogen atmosphere. Next, polypropylene glycol monomethacrylate (“Premmar PP-1000” manufactured by NOF ■, average number of added moles of propylene oxide 5 to 6)
91 parts, acrylic acid 69 parts, benzoyl peroxide 4 parts
.. Consisting of 80 copies and 240 copies of IPA! The mixture was added in 120 minutes, and after the addition was completed, 0.96 parts of benzoyl peroxide dispersed in 10 parts of IPA was added in two portions every 30 minutes. After completing the monomer addition, 120
The temperature was maintained at boiling point for a minute to complete the polymerization reaction. After that, completely neutralize with caustic soda aqueous solution,
'A was distilled off to obtain an aqueous solution of copolymer (4). The pH and viscosity of a 40% aqueous solution of this copolymer (4) are
It was as shown in the table.

参考例 5 ゛参考例1と同じ反応容器に水141.2部及びIPA
170部をイを込み、撹拌下に反応容器内を窒素置換し
、窒素雰囲気中で沸点まで加熱した。
Reference Example 5 ゛In the same reaction container as Reference Example 1, add 141.2 parts of water and IPA.
170 parts of A were added, and the inside of the reaction vessel was purged with nitrogen while stirring, and heated to the boiling point in a nitrogen atmosphere.

次いでメトキシポリエチレングリコールモノメタアクリ
レート(“NKエステルM−23G”新中村化学鋼)製
、エチレンオキ→ノイド平均付加モル数231i1)7
2部、5’ り+)ルtJ 48 部、IPA90部及
び水90部からなる混合物、アクリルアミド−40部、
IPA60部及び水60部からなる混合物、並びに10
%過硫酸アンモニウム水溶液48部のそれぞれを120
分間で添加し、添加終了後更に10%過硫酸アンモニウ
ム4.8部を30分毎に2回に分・けて添加した。モノ
マー添加完結後、120分間沸点に!!!度を保持して
重合反応を完了させた。その後、カセイソーダ水溶液に
て完全中水溶液を得た。この共重合体(5)の40%水
溶液のPH及び粘度は第1表に示した通りであった。
Next, methoxypolyethylene glycol monomethacrylate (“NK Ester M-23G” manufactured by Shin Nakamura Kagaku Steel), ethylene oxide → average number of added moles of noids 231i1) 7
A mixture consisting of 2 parts, 48 parts of 5' R+), 90 parts of IPA and 90 parts of water, 40 parts of acrylamide,
A mixture consisting of 60 parts IPA and 60 parts water, and 10
120 parts of each of 48 parts of ammonium persulfate aqueous solution
After the addition was completed, 4.8 parts of 10% ammonium persulfate was added in two portions every 30 minutes. After monomer addition is complete, it reaches the boiling point for 120 minutes! ! ! The polymerization reaction was completed while maintaining the temperature. Thereafter, a completely neutral aqueous solution was obtained using a caustic soda aqueous solution. The pH and viscosity of a 40% aqueous solution of this copolymer (5) were as shown in Table 1.

参考例 6 参考例1と同じ反応容器にIP△390部を仕込み、撹
拌下に反応容器内を窒素置換し、窒素雰囲気中で沸点ま
で加熱した。次いでメトキシポリエチレングリコールモ
ノメタアクリレート(“NK]7ステルM−23G”新
中村化学■製、エチレンオキサイド平均付加モル数23
個)88部1、アクリル酸64部、スチレン8部、ベン
ゾイルパーオキシド2.4F!及びIr’A240部か
らなる泥合物を120分で添加し、添加終了後更に0.
48部のペンゾイルバ、−オキとドをIPAl、0部に
分散させたものを30分−毎に2−に分けて添加した。
Reference Example 6 390 parts of IP△ was charged into the same reaction vessel as in Reference Example 1, the inside of the reaction vessel was replaced with nitrogen while stirring, and the mixture was heated to the boiling point in a nitrogen atmosphere. Next, methoxypolyethylene glycol monomethacrylate (“NK” 7 Stell M-23G” manufactured by Shin Nakamura Chemical ■, average number of added moles of ethylene oxide 23)
pieces) 88 parts 1, acrylic acid 64 parts, styrene 8 parts, benzoyl peroxide 2.4F! A slurry mixture consisting of 240 parts of Ir'A and 240 parts of Ir'A was added over 120 minutes, and after the addition was completed, an additional 0.0 parts of Ir'A was added.
48 parts of penzoylva, oxide, dispersed in 0 parts of IPAl, were added in 2 portions every 30 minutes.

モノマーの添加完結後1.120分間沸点に保持して重
合反応を完了させた。その後、カセイソーダ水溶液にて
完全中和を行匂い、■PAを留去して共重合体(6)の
水溶液を得た。この共重合体(6)の40%水溶液のP
H及び粘度は第1表に示した通りであった。
After the monomer addition was completed, the boiling point was maintained for 1.120 minutes to complete the polymerization reaction. Thereafter, complete neutralization was performed with an aqueous solution of caustic soda, and the odor and PA were distilled off to obtain an aqueous solution of copolymer (6). P of a 40% aqueous solution of this copolymer (6)
H and viscosity were as shown in Table 1.

第    1    表 (注1>B型粘度計、25℃、60 rpmにて測定 実施例 1 (ブレーンモルタルの組成) が゛ 住友普通ボ、ノリランドセメント 1部静浦1準砂 ′
        2部 水                     0.5
部分散剤無添加エルタル(プレーンモルタル)【J上記
の配合で調製を行なった。また分散剤添加しルタルは、
セメントに対して分散剤が固形yA粋で0.1%から1
.0%となる量をあらかじめ水に溶解しておき、その水
溶液を用いてモルタルを調製した。・用いた分散剤は参
考例1〜6で得た共重合体(1)〜(6)並びに比較の
為のクルコン酸塩及びナフタリンスルホン酸・ホルマリ
ン綜合物塩である。
Table 1 (Note 1> Measured using a B-type viscometer at 25°C and 60 rpm. Example 1 (Composition of Blaine mortar) is ``Sumitomo Ordinary Bottle, Noriland Cement 1 part Shizuura 1 Quasi-sand''
2 parts water 0.5
Ertal (plain mortar) without partial dispersant added [J Prepared using the above formulation. In addition, Rutal with dispersant added,
The dispersant is solid and has a ratio of 0.1% to 1% of the cement.
.. A 0% amount was dissolved in water in advance, and mortar was prepared using the aqueous solution. - The dispersants used were the copolymers (1) to (6) obtained in Reference Examples 1 to 6, as well as curconate salt and naphthalene sulfonic acid/formalin complex salt for comparison.

また、・それぞれの分散剤について、フロー値が170
±5’amとなる添加量でのモルタルの凝結時間、曲げ
強さ及び圧縮強さを第2表に示した。なお、フロー値、
曲げ強さ及び圧縮強さは、いfれもJIS  R520
1の試験方法に従つ4゛て行な゛った。       
     、 第2表に示した結果から明らかな如く、不発、明のセメ
ント分散剤は公知のセメ・ント分散剤であるグルコン酸
塩やナフタリンスルホン酸・ホルマリン綜合物塩に比較
して、セメントに対する分散効宋が優れてお゛す、極め
て少量の添加によって流動性の高い1ルタルを提供しう
ろことがわかる。
Also, for each dispersant, the flow value is 170
Table 2 shows the setting time, bending strength and compressive strength of the mortar at an addition amount of ±5'am. In addition, the flow value,
Bending strength and compressive strength are both JIS R520.
The test was carried out 4 times according to the test method in Section 1.
As is clear from the results shown in Table 2, the cement dispersant of the undiscovered cement dispersant has better dispersion in cement than the known cement dispersants such as gluconate and naphthalene sulfonic acid/formalin composite salt. It can be seen that the effect of Sung is excellent, and that a very small amount of addition can provide a highly fluid solution.

/ 11./ /゛′ / 実施例 2 (ブレーンコンクリートの組成) セメント 住友酋通ポルトランドセメン1へ細筒)4 
 紀ノ用産 粗骨材  宝塚砕石(最大粒径20111m)・HHL
/ 11. / /゛′ / Example 2 (Composition of Brain Concrete) Cement Sumitomo Keitsu Portland Cemen 1 to Narrow Tube) 4
Kinoyo coarse aggregate Takarazuka crushed stone (maximum particle size 20111m)/HHL
.

○単位セメント量     300 Kg 7m”○骨
材中での細骨材料 分散剤無添加コンクリート(プレーンコンクリート)は
、上記の配合により調製した結束、スラシI8.3cr
n、空気11 、 ’8%であった。分散剤′添加コン
クリートは、分散剤を溶解した水を用いU、L2の配合
に従ってコンクリ−1−を調製した場合のスランプが8
.0±1.0mとなるように、ぞれぞれの分散剤につい
て(の添加Iを求め、ぞの時の空気量、凝結時間及び圧
縮強度を測定した。
○ Unit amount of cement: 300 Kg 7 m” ○ Fine bone material in the aggregate No dispersant added concrete (plain concrete) is made of bundles and slush I8.3cr prepared according to the above formulation.
n, air 11, '8%. Concrete with dispersant' added has a slump of 8 when concrete 1- is prepared using water in which the dispersant is dissolved and according to the mix of U and L2.
.. The addition I of each dispersant was determined so that the distance was 0±1.0 m, and the amount of air, setting time, and compressive strength at each time were measured.

用いた分散剤は参考例1〜6で得た共重合体(1)(6
)及び比較の為のナフタレンスルホン酸・・!・ルマリ
ン綜合物塩である。なお、スラン−7は、」Is  A
  1101、空気量はJIS  A  1116、圧
縮強度はJIS  A  1108.凝結的間は△ST
M  C403−61Tの方法に従−)でぞれぞれ測定
した。その結果を第3表に1、シた。
The dispersant used was Copolymer (1) (6) obtained in Reference Examples 1 to 6.
) and naphthalene sulfonic acid for comparison...!・It is a lumaline synthetic salt. In addition, Slan-7 is "Is A
1101, air volume is JIS A 1116, compressive strength is JIS A 1108. Condensation period is △ST
They were each measured according to the method of MC403-61T. The results are shown in Table 3.

第3表に示した結果から明らかな如く、本発明・リヒメ
ント分散剤は、公知の分散剤に比較しく回等の流動性の
コンクリートを得るのに少量の添加Vてよく、また圧縮
強度に於いてし同着よIこCしてれ以上の性能を右する
ことが明らかで6)る。
As is clear from the results shown in Table 3, compared to known dispersants, the Lichment dispersant of the present invention requires only a small amount of addition to obtain highly fluid concrete, and also has a significant effect on compressive strength. It is clear that the performance will be better than that of the IC if it is the same as the IC.

Claims (1)

【特許請求の範囲】 1、一般式 %式% で示されるポリアルキレングリ」−ル[)(メタ)アク
リル酸エステル系単量体(イ)、般式 %式% で示される(メタ)アクリル酸系単量体(ロ) 及びこれらの甲部体と共重合可能な単量体(ハ)を、 ボ・リアルキレングリ」−ルLノ(メタ)アクリル酸エ
ステル系単量体(イ)10〜95重拳%、(メタ)アク
リル酸系単量体(ロ)90〜5.1!i′間%及び単量
体(ハ)。 〜50重−%(但し、(イ)、(ロ)及び(ハ)の合計
は1.0 Ofi 1%である。)の比率で用いて導か
れた共重合体(A>及び77又は該共重合体(A)を更
にアルカリ性物質で中和して得られた共重合体([3)
を主成分とするセメント分散剤。     2、 共重
合体(A>が、ポリアルキレングリコールモノ(メタ)
アクリル酸1スフル系単量体(イ)及び(メタ)アクリ
ル酸系甲曇体(0)を、前者50〜80Φ―%及び後者
20〜50重量%(但し、両名の金品1は100重量%
である。)の比率で用い−C導かれたものである特許請
求の範囲第1項記載のセメント分散剤。
[Claims] 1. Polyalkylene glycol [) (meth)acrylic acid ester monomer (a) represented by the general formula %, (meth)acrylic ester represented by the general formula % The acidic monomer (b) and the monomer copolymerizable with these monomers (c) are combined with the (meth)acrylic acid ester monomer (a). 10-95 heavy fist%, (meth)acrylic acid monomer (b) 90-5.1! % between i′ and monomer (c). Copolymers (A> and 77 or Copolymer ([3) obtained by further neutralizing copolymer (A) with an alkaline substance
A cement dispersant whose main ingredient is 2. Copolymer (A> is polyalkylene glycol mono(meth)
Acrylic acid 1 sulfur monomer (A) and (meth)acrylic acid opaque monomer (0), the former 50 to 80Φ-% and the latter 20 to 50% by weight (however, the gold article 1 of both names is 100% by weight) %
It is. 2. The cement dispersant according to claim 1, wherein -C is used at a ratio of -C.
JP17282981A 1981-10-30 1981-10-30 cement dispersant Expired JPS5918338B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17282981A JPS5918338B2 (en) 1981-10-30 1981-10-30 cement dispersant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17282981A JPS5918338B2 (en) 1981-10-30 1981-10-30 cement dispersant

Publications (2)

Publication Number Publication Date
JPS5874552A true JPS5874552A (en) 1983-05-06
JPS5918338B2 JPS5918338B2 (en) 1984-04-26

Family

ID=15949122

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
JP (1) JPS5918338B2 (en)

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59162160A (en) * 1983-03-01 1984-09-13 三洋化成工業株式会社 Cement dispersant composition
JPS60232243A (en) * 1984-04-28 1985-11-18 Res Dev Corp Of Japan Adsorbent comprising crosslinked high-molecular polymer
JPS61117143A (en) * 1984-11-13 1986-06-04 電気化学工業株式会社 Slurry silica fume for admixing cement
JPS62256752A (en) * 1986-04-28 1987-11-09 新日鐵化学株式会社 Self levelling mortar
JPS6339906A (en) * 1986-07-01 1988-02-20 ダブリユー・アール・グレイス・アンド・カンパニー−コネチカツト Cement additive
US4808641A (en) * 1986-07-31 1989-02-28 Fujisawa Pharmaceutical Co., Ltd. Concrete admixture
JPH01226757A (en) * 1988-03-04 1989-09-11 Takemoto Oil & Fat Co Ltd Dispersing agent for cement
US4888059A (en) * 1986-12-25 1989-12-19 Dainippon Ink And Chemicals, Inc. Cement dispersing agent
US4968734A (en) * 1986-07-01 1990-11-06 W. R. Grace & Co.-Conn. Cement admixture
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