JPH08290955A - Self-leveling aqueous composition - Google Patents
Self-leveling aqueous compositionInfo
- Publication number
- JPH08290955A JPH08290955A JP7116443A JP11644395A JPH08290955A JP H08290955 A JPH08290955 A JP H08290955A JP 7116443 A JP7116443 A JP 7116443A JP 11644395 A JP11644395 A JP 11644395A JP H08290955 A JPH08290955 A JP H08290955A
- Authority
- JP
- Japan
- Prior art keywords
- structural unit
- weight
- ratio
- self
- 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
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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/16—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing anhydrite, e.g. Keene's cement
-
- 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
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/60—Flooring materials
- C04B2111/62—Self-levelling compositions
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はセルフレベリング性水性
組成物に関し、更に詳しくは低温下でも長時間に亘って
優れた流動性を示し、また優れた強度及び表面外観の硬
化体が得られるセルフレベリング性水性組成物に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-leveling aqueous composition, and more specifically, it shows a self-curing product which exhibits excellent fluidity over a long period of time even at low temperatures and has excellent strength and surface appearance. It relates to a leveling aqueous composition.
【０００２】[0002]
【従来の技術】近年、建築物の床施工には、水平な床面
を作る上で煩雑なコテ仕上げを要しないセルフレベリン
グ性水性組成物が使用されている。かかるセルフレベリ
ング性水性組成物には、使用する基材の種類によって、
石膏系のもの、セメント系のもの、石膏系とセメント系
とを併用した混合系のもの等がある。しかし、石膏系の
セルフレベリング性水性組成物には得られる硬化体に乾
燥収縮によるひび割れが少ないという利点がある反面、
該硬化体の耐水性が劣るという欠点がある。またセメン
ト系のセルフレベリング性水性組成物には得られる硬化
体の耐水性が優れるという利点がある反面、該硬化体に
乾燥収縮によるひび割れが多いという欠点がある。これ
らに対して、混合系のセルフレベリング性水性組成物に
は上記のような欠点の相応の改善が認められる。ところ
で、これら従来のセルフレベリング性水性組成物はいず
れも、温度によって流動性が変化し、特に低温下で流動
性が低下することが知られている。流動性を改善するた
め、これら従来のセルフレベリング性水性組成物にも、
分散剤として各種の水溶性ビニル共重合体（特公昭５９
−１８３３８号、特公平５−１１０５７号、特開平４−
２０９６１３号）が使用されている。そしてこれら公知
の水溶性ビニル共重合体は、石膏系やセメント系のセル
フレベリング性水性組成物において、相応の効果が認め
られる。しかし、混合系のセルフレベリング性水性組成
物においては、分散剤としてこれら公知の水溶性ビニル
共重合体を使用しても、特に低温下での流動性が充分に
改善されず、また強度の優れた硬化体が得られないとい
う欠点がある。その上、これら公知の水溶性ビニル共重
合体を分散剤として使用した混合系のセルフレベリング
性水性組成物で床施工した場合、硬化後の床表面に白華
粉が生じやすく、特に冬期に施工した場合にはその程度
が著しく、表面外観の優れた床面が得られないという欠
点がある。2. Description of the Related Art In recent years, for floor construction of buildings, a self-leveling aqueous composition which does not require a complicated trowel finish to form a horizontal floor surface has been used. Such self-leveling aqueous composition, depending on the type of substrate used,
There are gypsum-based ones, cement-based ones, and mixed-type ones that use a combination of gypsum-based and cement-based ones. However, while the gypsum-based self-leveling aqueous composition has the advantage that the resulting cured product has few cracks due to drying shrinkage,
There is a drawback that the water resistance of the cured product is poor. In addition, the cement-based self-leveling aqueous composition has an advantage that the obtained cured product has excellent water resistance, but has a drawback that the cured product has many cracks due to drying shrinkage. On the other hand, the mixed self-leveling aqueous composition shows a corresponding improvement in the above-mentioned drawbacks. By the way, it is known that the fluidity of any of these conventional self-leveling aqueous compositions changes with temperature, and that the fluidity decreases particularly at low temperatures. In order to improve fluidity, these conventional self-leveling aqueous compositions also have
Various water-soluble vinyl copolymers as dispersants (Japanese Patent Publication Sho 59
-18338, Japanese Examined Patent Publication No. 5-11057, and Japanese Patent Laid-Open No. 4-187
209613) is used. And, these publicly known water-soluble vinyl copolymers have a corresponding effect in a gypsum-based or cement-based self-leveling aqueous composition. However, in the self-leveling aqueous composition of the mixed system, even if these known water-soluble vinyl copolymers are used as the dispersant, the fluidity is not sufficiently improved especially at low temperature, and the strength is excellent. There is a drawback that a cured product cannot be obtained. In addition, when floor construction is performed with a self-leveling aqueous composition of a mixed system using these known water-soluble vinyl copolymers as a dispersant, white flower powder is likely to be produced on the floor surface after curing, especially in winter. In that case, there is a drawback in that the degree is so remarkable that a floor surface having an excellent surface appearance cannot be obtained.
【０００３】[0003]
【発明が解決しようとする課題】本発明が解決しようと
する課題は、従来の混合系のセルフレベリング性水性組
成物では、優れた流動性が発現できず、また優れた強度
及び表面外観の硬化体が得られず、特にこれらは低温下
において問題であるという点である。The problem to be solved by the present invention is that the conventional mixed self-leveling aqueous composition cannot exhibit excellent fluidity, and also has excellent curing of strength and surface appearance. The body is not obtained, especially these are problems at low temperatures.
【０００４】[0004]
【課題を解決するための手段】しかして本発明者らは、
上記の課題を解決するべく鋭意研究した結果、セメント
と天然II型無水石膏とを所定比率で混合したものを基材
とし、これに特定の水溶性ビニル共重合体から成る分散
剤を所定割合で含有して成るセルフレベリング性水性組
成物が正しく好適であることを見出した。However, the present inventors have
As a result of intensive research to solve the above problems, a mixture of cement and natural type II anhydrous gypsum at a predetermined ratio was used as a base material, and a dispersant consisting of a specific water-soluble vinyl copolymer was added at a predetermined ratio. It has been found that the self-leveling aqueous composition comprising is correct and suitable.
【０００５】すなわち本発明は、セメントと天然II型無
水石膏とをセメント／天然II型無水石膏＝４０／６０〜
８０／２０（重量比）の比率で混合した基材１００重量
部に対し、下記の分散剤を０．１〜３重量部の割合で含
有して成ることを特徴とするセルフレベリング性水性組
成物に係る。That is, in the present invention, cement and natural type II anhydrous gypsum are cement / natural type II anhydrous gypsum = 40 / 60-
A self-leveling aqueous composition comprising 0.1 to 3 parts by weight of the following dispersant based on 100 parts by weight of a base material mixed at a ratio of 80/20 (weight ratio). Pertain to.
【０００６】分散剤：下記の式１で示される構成単位
Ａ、下記の式２で示される構成単位Ｂ、下記の式３で示
される構成単位Ｃ、下記の式４で示される構成単位Ｄ、
下記の式５で示される構成単位Ｅ、下記の式６で示され
る構成単位Ｆ及び下記の式７で示される構成単位Ｇから
成る水溶性ビニル共重合体であって、全構成単位中、構
成単位Ａと構成単位Ｂとの合計量が２５〜４５重量％、
構成単位Ｂと構成単位Ｃとの合計量が２５〜５０重量
％、構成単位Ｄと構成単位Ｅとの合計量が５〜２５重量
％及び残部が構成単位Ｆと構成単位Ｇとであり、且つ構
成単位Ｂ／構成単位Ａの比率が１５／８５〜４０／６０
（重量比）、構成単位Ｃ／構成単位Ｂの比率が６４／３
６〜８５／１５（重量比）及び構成単位Ｅ／構成単位Ｄ
の比率が２５／７５〜７５／２５（重量比）である水溶
性ビニル共重合体Dispersant: Structural unit A represented by the following formula 1, structural unit B represented by the following formula 2, structural unit C represented by the following formula 3, structural unit D represented by the following formula 4,
A water-soluble vinyl copolymer comprising a structural unit E represented by the following formula 5, a structural unit F represented by the following formula 6, and a structural unit G represented by the following formula 7, wherein The total amount of the unit A and the structural unit B is 25 to 45% by weight,
The total amount of the structural unit B and the structural unit C is 25 to 50% by weight, the total amount of the structural unit D and the structural unit E is 5 to 25% by weight, and the balance is the structural unit F and the structural unit G, and The ratio of the structural unit B / the structural unit A is 15/85 to 40/60
(Weight ratio), the ratio of structural unit C / structural unit B is 64/3
6 to 85/15 (weight ratio) and constitutional unit E / constitutional unit D
-Soluble vinyl copolymer having a ratio of 25/75 to 75/25 (weight ratio)
【０００７】[0007]
【式１】 (Equation 1)
【式２】 (Equation 2)
【式３】 (Equation 3)
【式４】 (Equation 4)
【式５】 [Formula 5]
【式６】 [Formula 6]
【式７】 [Formula 7]
【０００８】（式１〜式７において、 Ｒ1，Ｒ3，Ｒ4，Ｒ5：Ｈ又はＣＨ3 Ｒ2：Ｃ6Ｈ5又はＣ6Ｈ5ＣＨ2 Ｍ1，Ｍ2，Ｍ3：アルカリ金属、アルカリ土類金属及び
有機アミンから選ばれるカチオン基 ｐ：１０〜３０の整数 ｑ：７〜５０の整数 ｒ：１〜２０の整数）(In the formulas 1 to 7, R1, R3, RFour, RFive: H or CH3 R2: C6HFiveOr C6HFiveCH2 M1, M2, M3: Alkali metals, alkaline earth metals and
Cationic group selected from organic amines p: integer of 10 to 30 q: integer of 7 to 50 r: integer of 1 to 20)
【０００９】本発明で用いるセメントには、１）ポルト
ランドセメント、２）混合セメントが包含される。かか
るポルトランドセメントとしては、普通セメント、早強
セメント、中庸熱セメント、超早強セメント、耐硫酸塩
セメント等が挙げられ、また混合セメントとしては、高
炉セメント、フライアッシュセメント、シリカセメント
等が挙げられる。The cement used in the present invention includes 1) Portland cement and 2) mixed cement. Examples of such Portland cement include normal cement, early-strength cement, moderate heat cement, ultra-early-strength cement, sulfate-resistant cement, and the like, and mixed cement includes blast furnace cement, fly ash cement, silica cement, and the like. .
【００１０】本発明で用いる石膏は天然II型無水石膏で
ある。石膏には、天然II型無水石膏、結晶石膏、可溶性
無水石膏、焼石膏、半水石膏等があるが、これらのうち
で本発明では、天然II型無水石膏を用いる。The gypsum used in the present invention is natural type II anhydrous gypsum. Gypsum includes natural type II anhydrous gypsum, crystalline gypsum, soluble anhydrous gypsum, calcined gypsum, hemihydrate gypsum, etc. Among them, in the present invention, natural type II anhydrous gypsum is used.
【００１１】本発明では基材としてセメントと天然II型
無水石膏との混合物を用いる。この混合物中における双
方の比率は、セメント／天然II型無水石膏＝４０／６０
〜８０／２０（重量比）とするが、５０／５０〜７０／
３０（重量比）とするのが好ましい。In the present invention, a mixture of cement and natural type II anhydrous gypsum is used as a base material. The ratio of both in this mixture is cement / natural type II anhydrite = 40/60
~ 80/20 (weight ratio), but 50/50 to 70 /
It is preferably 30 (weight ratio).
【００１２】本発明では分散剤として水溶性ビニル共重
合体を用いる。この水溶性ビニル共重合体は、その構成
単位として、前記した式１〜式７で示される構成単位Ａ
〜構成単位Ｇを有するものである。これらの構成単位Ａ
〜構成単位Ｇはそれぞれ相当するビニル単量体を共重合
することによって形成される。In the present invention, a water-soluble vinyl copolymer is used as the dispersant. This water-soluble vinyl copolymer has a constitutional unit A represented by the above formulas 1 to 7 as its constitutional unit.
~ Having a structural unit G. These building blocks A
~ The structural unit G is formed by copolymerizing the corresponding vinyl monomers.
【００１３】式１で示される構成単位Ａを形成すること
となるビニル単量体には、１）メタクリル酸のアルカリ
金属塩、アルカリ土類金属塩及び有機アミン塩、２）ク
ロトン酸のアルカリ金属塩、アルカリ土類金属塩及び有
機アミン塩がある。なかでもメタクリル酸のナトリウム
やカリウム等のアルカリ金属塩及びクロトン酸のナトリ
ウムやカリウム等のアルカリ金属塩が好ましい。The vinyl monomer forming the structural unit A represented by the formula 1 includes 1) an alkali metal salt of methacrylic acid, an alkaline earth metal salt and an organic amine salt, and 2) an alkali metal crotonic acid. There are salts, alkaline earth metal salts and organic amine salts. Of these, alkali metal salts such as sodium and potassium methacrylic acid and alkali metal salts such as sodium and potassium crotonic acid are preferable.
【００１４】式２で示される構成単位Ｂを形成すること
となるビニル単量体には、オキシエチレン単位の繰り返
し数が１０〜３０であるメトキシポリエトキシエチルメ
タクリレートがある。なかでもオキシエチレン単位の繰
り返し数が１５〜２５のものが好ましい。The vinyl monomer forming the structural unit B represented by the formula 2 is methoxypolyethoxyethyl methacrylate having a repeating number of oxyethylene units of 10 to 30. Among them, those having a repeating number of oxyethylene units of 15 to 25 are preferable.
【００１５】式３で示される構成単位Ｃを形成すること
となるビニル単量体には、いずれもオキシエチレン単位
の繰り返し数が７〜５０である、１）フェノキシポリエ
トキシエチルメタクリレート、２）フェニルメトキシポ
リエトキシエチルメタクリレートがある。なかでもオキ
シエチレン単位の繰り返し数が１０〜４０のものが好ま
しい。The vinyl monomer forming the structural unit C represented by the formula 3 has a repeating number of oxyethylene units of 7 to 50, 1) phenoxypolyethoxyethyl methacrylate, and 2) phenyl. There is methoxypolyethoxyethylmethacrylate. Among them, those having a repeating number of oxyethylene units of 10 to 40 are preferable.
【００１６】式４で示される構成単位Ｄを形成すること
となるビニル単量体には、メタリルスルホン酸のアルカ
リ金属塩、アルカリ土類金属塩及び有機アミン塩があ
る。なかでもメタリルスルホン酸のナトリウムやカリウ
ム等のアルカリ金属塩が好ましい。The vinyl monomer forming the structural unit D represented by the formula 4 includes alkali metal salts, alkaline earth metal salts and organic amine salts of methallyl sulfonic acid. Of these, alkali metal salts of methallyl sulfonic acid such as sodium and potassium are preferable.
【００１７】式５で示される構成単位Ｅを形成すること
となるビニル単量体には、Ｐ−メタリルオキシベンゼン
スルホン酸のアルカリ金属塩、アルカリ土類金属塩及び
有機アミン塩がある。なかでもＰ−メタリルオキシベン
ゼンスルホン酸のナトリウムやカリウム等のアルカリ金
属塩が好ましい。The vinyl monomer forming the constitutional unit E represented by the formula 5 includes alkali metal salts, alkaline earth metal salts and organic amine salts of P-methallyloxybenzenesulfonic acid. Of these, alkali metal salts of P-methallyloxybenzenesulfonic acid such as sodium and potassium are preferable.
【００１８】式６で示される構成単位Ｆを形成すること
となるビニル単量体には、いずれもオキシエチレン単位
の繰り返し数が１〜２０である、１）ポリエチレングリ
コールモノアリルエーテル、２）ポリエチレングリコー
ルモノメタリルエーテル、３）メトキシポリエトキシエ
チルアリルエーテル、４）メトキシポリエトキシエチル
メタリルエーテルがある。なかでも、いずれもオキシエ
チレン単位の繰り返し数が５〜１０である、ポリエチレ
ングリコールモノアリルエーテル及びポリエチレングリ
コールモノメタリルエーテルが好ましい。The vinyl monomer forming the structural unit F represented by the formula 6 has 1 to 20 repeating units of oxyethylene units, 1) polyethylene glycol monoallyl ether, and 2) polyethylene. There are glycol monomethallyl ether, 3) methoxypolyethoxyethyl allyl ether, and 4) methoxypolyethoxyethyl methallyl ether. Among them, polyethylene glycol monoallyl ether and polyethylene glycol monomethallyl ether, in which the number of repeating oxyethylene units is 5 to 10, are preferable.
【００１９】式７で示される構成単位Ｇを形成すること
となるビニル単量体には、メチルアクリレート及びメチ
ルメタクリレートがある。Vinyl monomers that will form the structural unit G shown in Formula 7 include methyl acrylate and methyl methacrylate.
【００２０】本発明において分散剤として用いる水溶性
ビニル共重合体は以上説明したような構成単位Ａ、構成
単位Ｂ、構成単位Ｃ、構成単位Ｄ、構成単位Ｅ、構成単
位Ｆ及び構成単位Ｇから成るものであって、これらの全
構成単位中、構成単位Ａと構成単位Ｂとの合計量が２５
〜４５重量％、好ましくは３０〜４０重量％、構成単位
Ｂと構成単位Ｃとの合計量が２５〜５０重量％、好まし
くは３０〜４５重量％、構成単位Ｄと構成単位Ｅとの合
計量が５〜２５重量％、好ましくは５〜２０重量％、及
び残部が構成単位Ｆと構成単位Ｇとであるものである。The water-soluble vinyl copolymer used as the dispersant in the present invention comprises the structural unit A, structural unit B, structural unit C, structural unit D, structural unit E, structural unit F and structural unit G as described above. And the total amount of the constituent units A and B in all these constituent units is 25
-45% by weight, preferably 30-40% by weight, the total amount of the structural unit B and the structural unit C is 25-50% by weight, preferably 30-45% by weight, the total amount of the structural unit D and the structural unit E Is 5 to 25% by weight, preferably 5 to 20% by weight, and the balance is structural unit F and structural unit G.
【００２１】また本発明において分散剤として用いる水
溶性ビニル共重合体は、構成単位Ｂ／構成単位Ａの比率
が１５／８５〜４０／６０（重量比）、好ましくは１５
／８５〜３５／６５（重量比）、構成単位Ｃ／構成単位
Ｂの比率が６４／３６〜８５／１５（重量比）、好まし
くは７０／３０〜８５／１５（重量比）及び構成単位Ｅ
／構成単位Ｄの比率が２５／７５〜７５／２５（重量
比）、好ましくは４０／６０〜７５／２５（重量比）で
あるものである。In the water-soluble vinyl copolymer used as the dispersant in the present invention, the ratio of the structural unit B / the structural unit A is 15/85 to 40/60 (weight ratio), preferably 15
/ 85 to 35/65 (weight ratio), the ratio of structural unit C / structural unit B is 64/36 to 85/15 (weight ratio), preferably 70/30 to 85/15 (weight ratio) and structural unit E
/ The ratio of the structural unit D is 25/75 to 75/25 (weight ratio), preferably 40/60 to 75/25 (weight ratio).
【００２２】水溶性ビニル共重合体の各構成単位のなか
では、構成単位Ｂと構成単位Ｃとが類似構造を有し、ま
た構成単位Ｄと構成単位Ｅとが類似構造を有する。類似
構造を有するこれらの構成単位において、芳香族基を有
する構成単位と芳香族基を有しない構成単位との比率が
分散剤としての作用効果に大きく影響する。他の条件を
充足することを前提として、芳香族基を有する構成単位
Ｃ／芳香族基を有しない構成単位Ｂの比率及び芳香族基
を有する構成単位Ｅ／芳香族基を有しない構成単位Ｄの
比率が前記した範囲内にあれば、そのような水溶性ビニ
ル共重合体を分散剤として用いたセルフレベリング性水
性組成物に優れた流動性を与えることができ、また優れ
た強度及び表面外観の硬化体を得ることができる。Among the constituent units of the water-soluble vinyl copolymer, constituent unit B and constituent unit C have similar structures, and constituent unit D and constituent unit E have similar structures. In these constitutional units having a similar structure, the ratio of the constitutional unit having an aromatic group to the constitutional unit not having an aromatic group greatly affects the action and effect as a dispersant. On the assumption that other conditions are satisfied, the ratio of the structural unit C having an aromatic group / the structural unit B having no aromatic group and the structural unit E having an aromatic group / the structural unit D having no aromatic group When the ratio is within the above range, it is possible to impart excellent fluidity to a self-leveling aqueous composition using such a water-soluble vinyl copolymer as a dispersant, and also to provide excellent strength and surface appearance. Can be obtained.
【００２３】本発明は水溶性ビニル共重合体の合成方法
を特に制限するものではなく、その合成には公知の方
法、例えば特開平６−２０６７５０号公報に記載されて
いるような方法が適用できる。例えば、ラジカル開始剤
の存在下に、前記した各ビニル単量体を所定の共重合比
率となるよう水系溶液でラジカル共重合することにより
得られる。かくして得られる水溶性ビニル共重合体は、
分散剤としての効果の発現の点で、数平均分子量２００
０〜２００００（ＧＰＣ法、プルラン換算）のものが好
ましい。The present invention does not particularly limit the method of synthesizing the water-soluble vinyl copolymer, and a known method, for example, the method described in JP-A-6-206750 can be applied to the synthesis. . For example, it can be obtained by radically copolymerizing each of the above-mentioned vinyl monomers with an aqueous solution in the presence of a radical initiator so as to have a predetermined copolymerization ratio. The water-soluble vinyl copolymer thus obtained is
A number average molecular weight of 200 from the viewpoint of manifesting the effect as a dispersant.
It is preferably 0 to 20000 (GPC method, pullulan conversion).
【００２４】本発明における分散剤としての水溶性ビニ
ル共重合体の使用量は、前記した基材１００重量部に対
し、０．１〜３重量部とするが、０．５〜２．０重量部
とするのが好ましい。The amount of the water-soluble vinyl copolymer used as the dispersant in the present invention is 0.1 to 3 parts by weight with respect to 100 parts by weight of the above-mentioned substrate, but 0.5 to 2.0 parts by weight. It is preferable to be a part.
【００２５】本発明のセルフレベリング性水性組成物
は、以上説明したセメント、天然II型無水石膏及び分散
剤としての水溶性ビニル共重合体の他に、石膏の凝結促
進剤、収縮低減剤、増粘剤、消泡剤、骨材及び水を含有
する。The self-leveling aqueous composition of the present invention contains, in addition to the cement, the natural type II anhydrous gypsum and the water-soluble vinyl copolymer as a dispersant described above, a gypsum setting accelerator, a shrinkage-reducing agent, and an increasing agent. It contains a sticky agent, an antifoaming agent, an aggregate and water.
【００２６】石膏の凝結促進剤には、硫酸のアルカリ金
属塩及びアルカリ土類金属塩がある。なかでも硫酸カリ
ウムが好ましい。石膏の凝結促進剤の使用量は、基材１
００重量部に対し、通常０．０５〜１重量部とするが、
０．２〜１重量部とするのが好ましい。Gypsum set accelerators include alkali metal salts of sulfuric acid and alkaline earth metal salts. Of these, potassium sulfate is preferred. The amount of the setting accelerator of gypsum used is 1
Although it is usually 0.05 to 1 part by weight with respect to 00 parts by weight,
It is preferably 0.2 to 1 part by weight.
【００２７】収縮低減剤には、１）オキシプロピレン単
位の繰り返し数が２〜１２であるポリオキシプロピレン
グリコール、２）オキシプロピレン単位の繰り返し数が
２〜１２であって、オキシエチレン単位の繰り返し数が
２〜６であるポリオキシプロピレンポリオキシエチレン
グリコール、３）オキシプロピレン単位の繰り返し数が
２〜１２であり、オキシエチレン単位の繰り返し数が２
〜６である、炭素数１〜６のアルコキシポリオキシプロ
ピレンポリオキシエチレングリコールがある。なかでも
オキシプロピレン単位の繰り返し数が２〜１２であるポ
リオキシプロピレングリコールが好ましい。収縮低減剤
の使用量は、基材１００重量部に対し、通常０．２〜６
重量部とするが、０．５〜２重量部とするのが好まし
い。The shrinkage reducing agent includes 1) polyoxypropylene glycol having 2 to 12 repeating oxypropylene units, 2) 2 to 12 repeating oxypropylene units, and 2 to 12 repeating oxyethylene units. Is 2 to 6, polyoxypropylene polyoxyethylene glycol, 3) the number of repeating oxypropylene units is 2 to 12, and the number of repeating oxyethylene units is 2
There are alkoxy polyoxypropylene polyoxyethylene glycols having 1 to 6 carbon atoms and having 1 to 6 carbon atoms. Among them, polyoxypropylene glycol having 2 to 12 repeating oxypropylene units is preferable. The amount of shrinkage reducing agent used is usually 0.2 to 6 with respect to 100 parts by weight of the base material.
The amount is 0.5 part by weight, preferably 0.5 to 2 parts by weight.
【００２８】増粘剤には、メチルセルロース、ヒドロキ
シエチルセルロース、カルボキシメチルセルロースがあ
る。なかでもメチルセルロースが好ましい。かかる増粘
剤の使用により硬化体の乾燥収縮に対する抵抗性が向上
する。増粘剤の使用量は、基材１００重量部に対し、通
常０．０１〜０．６重量部とするが、０．０５〜０．４
重量部とするのが好ましい。Thickeners include methyl cellulose, hydroxyethyl cellulose and carboxymethyl cellulose. Of these, methyl cellulose is preferred. The use of such a thickener improves the resistance of the cured product to dry shrinkage. The amount of the thickener used is usually 0.01 to 0.6 parts by weight with respect to 100 parts by weight of the substrate, but 0.05 to 0.4.
It is preferable to use parts by weight.
【００２９】消泡剤には、シリコーン系界面活性剤、非
イオン系界面活性剤がある。なかでも非イオン系界面活
性剤が好ましい。消泡剤の使用量は、基材１００重量部
に対し、通常０．０１〜０．６重量部とするが、０．０
５〜０．４重量部とするのが好ましい。Antifoaming agents include silicone type surfactants and nonionic type surfactants. Of these, nonionic surfactants are preferable. The amount of the defoaming agent used is usually 0.01 to 0.6 parts by weight with respect to 100 parts by weight of the substrate, but 0.0
It is preferably 5 to 0.4 parts by weight.
【００３０】骨材には、川砂、海砂、陸砂、砕砂、珪砂
がある。かかる骨材は単独で又は２種類以上を混合して
使用できる。骨材は粒度が５mm以下で、粗粒率（Ｆ.
Ｍ.）が１．５〜３．０のものが好ましい。骨材の使用
量は、基材１００重量部に対し、通常３０〜３００重量
部とするが、６０〜１２０重量部とするのが好ましい。Aggregates include river sand, sea sand, land sand, crushed sand, and silica sand. Such aggregates can be used alone or in combination of two or more. The aggregate has a grain size of 5 mm or less and a coarse grain ratio (F.
It is preferable that M.) is 1.5 to 3.0. The amount of the aggregate used is usually 30 to 300 parts by weight, preferably 60 to 120 parts by weight, based on 100 parts by weight of the base material.
【００３１】水は社団法人日本建築学会のＪＡＳＳ１５
Ｍ−１０３「セルフレベリング材の品質基準」に定めら
れたフロー値が１９cm以上となる量使用するが、その使
用量は、基材１００重量部に対し、通常３０〜６０重量
部とする。Water is JASS15 of the Architectural Institute of Japan
It is used in an amount such that the flow value defined in M-103 "Quality standard of self-leveling material" is 19 cm or more, and the amount used is usually 30 to 60 parts by weight with respect to 100 parts by weight of the base material.
【００３２】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、本発明が該実施例に
限定されるというものではない。尚、以下の実施例等に
おいて、部は重量部を、また％は空気量を除き重量％を
意味する。Examples will be given below to make the constitution and effects of the present invention more concrete, but the present invention is not limited to these examples. In the following Examples and the like, "part" means "part by weight" and "%" means "% by weight excluding the amount of air".
【００３３】[0033]
試験区分１（分散剤としての水溶性ビニル共重合体の合
成） ・水溶性ビニル共重合体Ｐ−１の合成 メタクリル酸８０部（０．９３０モル）、メトキシポリ
エトキシエチル（ｎ＝２３、ｎはオキシエチレン単位の
繰り返し数、以下同じ）メタクリレート４０部（０．０
３６モル）、フェノキシポリエトキシエチル（ｎ＝２
０）メタクリレート１２０部（０．１１５モル）、メタ
リルスルホン酸ナトリウム３０部（０．１９０モル）、
Ｐ−メタリルオキシベンゼンスルホン酸ナトリウム２０
部（０．０８０モル）、ポリエチレングリコール（ｎ＝
８）モノアリルエーテル６０部（０．１４８モル）、メ
チルアクリレート３２部（０．３７２モル）及びイオン
交換水４００部を反応容器に仕込み、撹拌しながら溶解
した。続いて３０％の水酸化ナトリウム水溶液１２４部
を投入してメタクリル酸を中和し、反応系のｐＨを８．
５に調整した。次に反応系の温度を温水浴にて６０℃に
保ち、反応系内を窒素置換した後、重合開始剤として過
硫酸アンモニウムの２０％水溶液４０部を投入して重合
を開始し、４時間反応した後、更に過硫酸アンモニウム
の２０％水溶液２０部を投入し、３時間反応を継続して
重合を完結した。そして酸性分解物を中和するため、３
０％水酸化ナトリウム水溶液５部を投入し、完全中和し
て生成物を得た。得られた生成物の未反応モノマーを除
くため、生成物の一部をエバポレーターで濃縮し、石油
エーテル中に沈殿して濾別した後，真空乾燥して精製し
た水溶性ビニル共重合体Ｐ−１を得た。Test Category 1 (Synthesis of Water-Soluble Vinyl Copolymer as Dispersant) -Synthesis of Water-Soluble Vinyl Copolymer P-1 Methacrylic acid 80 parts (0.930 mol), methoxypolyethoxyethyl (n = 23, n) Is the number of repeating oxyethylene units, the same below) 40 parts of methacrylate (0.0
36 mol), phenoxypolyethoxyethyl (n = 2
0) Methacrylate 120 parts (0.115 mol), sodium methallyl sulfonate 30 parts (0.190 mol),
Sodium P-methallyloxybenzenesulfonate 20
Part (0.080 mol), polyethylene glycol (n =
8) 60 parts (0.148 mol) of monoallyl ether, 32 parts (0.372 mol) of methyl acrylate and 400 parts of ion-exchanged water were charged into a reaction vessel and dissolved with stirring. Subsequently, 124 parts of a 30% aqueous sodium hydroxide solution was added to neutralize methacrylic acid, and the pH of the reaction system was adjusted to 8.
Adjusted to 5. Next, the temperature of the reaction system was maintained at 60 ° C. in a warm water bath, the inside of the reaction system was replaced with nitrogen, and 40 parts of a 20% aqueous solution of ammonium persulfate was added as a polymerization initiator to initiate polymerization, and the reaction was carried out for 4 hours. Then, 20 parts of a 20% aqueous solution of ammonium persulfate was further added, and the reaction was continued for 3 hours to complete the polymerization. And to neutralize the acidic decomposition products, 3
5 parts of 0% sodium hydroxide aqueous solution was added and completely neutralized to obtain a product. In order to remove the unreacted monomer of the obtained product, a part of the product was concentrated with an evaporator, precipitated in petroleum ether, filtered off, and then vacuum dried to purify the water-soluble vinyl copolymer P-. Got 1.
【００３４】水溶性ビニル共重合体Ｐ−１をＵＶ吸収、
ＮＭＲ、原子吸光、熱分解ガスクロマトグラフィ、元素
分析、ＧＰＣ、滴定等で分析したところ、カルボキシル
価１６３、元素分析によるイオウ含有量２．０６％、Ｕ
Ｖ吸光度によるＰ−メタリルオキシベンゼンスルホン酸
ナトリウムの含有比率５．０％、フェノキシポリエトキ
シエチル（ｎ＝２０）メタクリレートの含有比率３０％
であり、またＮＭＲ、熱分解ガスクロマトグラフィ、Ｇ
ＰＣ分析の結果より、メタクリル酸ナトリウム／メトキ
シポリエトキシエチル（ｎ＝２３）メタクリレート／フ
ェノキシポリエトキシエチル（ｎ＝２０）メタクリレー
ト／メタリルスルホン酸ナトリウム／Ｐ−メタリルオキ
シベンゼンスルホン酸ナトリウム／ポリエチレングリコ
ール（ｎ＝８）モノアリルエーテル／メチルアクリレー
ト＝２５／１０／３０／７／５／１５／８（重量比）の
比率で構成された水溶性ビニル共重合体であって、数平
均分子量４５００（ＧＰＣ法、プルラン換算、以下同
じ）であった。UV absorption of the water-soluble vinyl copolymer P-1
When analyzed by NMR, atomic absorption, pyrolysis gas chromatography, elemental analysis, GPC, titration, etc., carboxyl value 163, sulfur content by elemental analysis 2.06%, U
Based on V absorbance, the content ratio of sodium P-methallyloxybenzenesulfonate is 5.0%, and the content ratio of phenoxypolyethoxyethyl (n = 20) methacrylate is 30%.
And NMR, pyrolysis gas chromatography, G
From the results of PC analysis, sodium methacrylate / methoxypolyethoxyethyl (n = 23) methacrylate / phenoxypolyethoxyethyl (n = 20) methacrylate / sodium methallyl sulfonate / sodium P-methallyloxybenzene sulfonate / polyethylene glycol (N = 8) monoallyl ether / methyl acrylate = 25/10/30/7/5/15/8 (weight ratio), which is a water-soluble vinyl copolymer having a number average molecular weight of 4500 ( GPC method, pullulan conversion, the same applies hereinafter).
【００３５】・水溶性ビニル共重合体Ｐ−２〜Ｐ−５及
びＲ−１〜Ｒ−８の合成 水溶性ビニル共重合体Ｐ−１の合成と同様にして、水溶
性ビニル共重合体Ｐ−２〜Ｐ−５及びＲ−１〜Ｒ−８を
得た。各水溶性ビニル共重合体の内容を表１及び表２に
まとめて示した。Synthesis of Water-Soluble Vinyl Copolymers P-2 to P-5 and R-1 to R-8 Water-soluble Vinyl Copolymer P is prepared in the same manner as the synthesis of water-soluble Vinyl Copolymer P-1. -2-P-5 and R-1 to R-8 were obtained. The contents of each water-soluble vinyl copolymer are summarized in Tables 1 and 2.
【００３６】[0036]
【表１】 [Table 1]
【００３７】[0037]
【表２】 [Table 2]
【００３８】表１及び表２において、 Ａ−１〜Ｇ−１：それぞれ前記の式１〜式７で示される
構成単位Ａ〜構成単位Ｇに相当する下記のビニル単量体 Ａ−１：メタクリル酸ナトリウム Ａ−２：クロトン酸ナトリウム Ｂ−１：メトキシポリエトキシエチル（ｎ＝２３）メタ
クリレート Ｃ−１：フェノキシポリエトキシエチル（ｎ＝２０）メ
タクリレート Ｃ−２：フェノキシポリエトキシエチル（ｎ＝１０）メ
タクリレート Ｃ−３：フェニルメトキシポリエトキシエチル（ｎ＝４
０）メタクリレート Ｄ−１：メタリルスルホン酸ナトリウム Ｅ−１：Ｐ−メタリルオキシベンゼンスルホン酸ナトリ
ウム Ｆ−１：ポリエチレングリコール（ｎ＝８）モノアリル
エーテル Ｆ−２：ポリエチレングリコール（ｎ＝５）モノアリル
エーテル Ｇ−１：メチルアクリレート 構成単位Ａ相当＋構成単位Ｂ相当：各構成単位に相当す
るビニル単量体の全量中に占める構成単位Ａ相当のビニ
ル単量体と構成単位Ｂ相当のビニル単量体との合計量の
割合（％） 構成単位Ｂ相当＋構成単位Ｃ相当：各構成単位に相当す
るビニル単量体の全量中に占める構成単位Ｂ相当のビニ
ル単量体と構成単位Ｃ相当のビニル単量体との合計量の
割合（％） 構成単位Ｄ相当＋構成単位Ｅ相当：各構成単位に相当す
るビニル単量体の全量中に占める構成単位Ｄ相当のビニ
ル単量体と構成単位Ｅ相当のビニル単量体との合計量の
割合（％） 構成単位Ｆ相当＋構成単位Ｇ相当：各構成単位に相当す
るビニル単量体の全量中に占める構成単位Ｆ相当のビニ
ル単量体と構成単位Ｇ相当のビニル単量体との合計量の
割合（％） 構成単位Ｂ相当／構成単位Ａ相当：構成単位Ｂ相当のビ
ニル単量体／構成単位Ａ相当のビニル単量体の重量比率 構成単位Ｃ相当／構成単位Ｂ相当：構成単位Ｃ相当のビ
ニル単量体／構成単位Ｂ相当のビニル単量体の重量比率 構成単位Ｅ相当／構成単位Ｄ相当：構成単位Ｅ相当のビ
ニル単量体／構成単位Ｄ相当のビニル単量体の重量比率In Tables 1 and 2, A-1 to G-1: the following vinyl monomers corresponding to the structural units A to G represented by the above formulas 1 to 7, respectively: A-1: methacryl Sodium acid salt A-2: Sodium crotonate B-1: Methoxypolyethoxyethyl (n = 23) methacrylate C-1: Phenoxypolyethoxyethyl (n = 20) methacrylate C-2: Phenoxypolyethoxyethyl (n = 10) Methacrylate C-3: Phenylmethoxypolyethoxyethyl (n = 4
0) Methacrylate D-1: sodium methallyl sulfonate E-1: sodium P-methallyloxybenzene sulfonate F-1: polyethylene glycol (n = 8) monoallyl ether F-2: polyethylene glycol (n = 5) Monoallyl ether G-1: Methyl acrylate Equivalent to structural unit A + Equivalent to structural unit B: Vinyl monomer corresponding to structural unit A and vinyl corresponding to structural unit B in the total amount of vinyl monomer corresponding to each structural unit Proportion (%) of the total amount with the monomer Constitutional unit B equivalent + Constitutional unit C equivalent: vinyl monomer equivalent to constitutional unit B and constitutional unit C in the total amount of vinyl monomer corresponding to each constitutional unit Proportion (%) of total amount with equivalent vinyl monomer Structural unit D equivalent + structural unit E equivalent: structural unit D in the total amount of vinyl monomer corresponding to each structural unit Ratio (%) of the total amount of the vinyl monomer in question and the vinyl monomer corresponding to the structural unit E: Corresponding to the structural unit F + corresponding to the structural unit G: occupied in the total amount of the vinyl monomer corresponding to each structural unit Ratio (%) of the total amount of the vinyl monomer corresponding to the structural unit F and the vinyl monomer corresponding to the structural unit G: Equivalent to the structural unit B / Equivalent to the structural unit A: Vinyl monomer equivalent to the structural unit B / Constitutional unit Weight ratio of vinyl monomer corresponding to A Structural unit C equivalent / Constitutional unit B equivalent: Weight ratio of vinyl monomer corresponding to structural unit C / Vinyl monomer equivalent to structural unit B Structural unit E equivalent / Constitutional unit D Equivalent: Weight ratio of vinyl monomer corresponding to structural unit E / vinyl monomer corresponding to structural unit D
【００３９】試験区分２（セルフレベリング性水性組成
物の調製及びその評価） ・実施例及び比較例 表３に記載した配合割合で、下記の各材料を、ホバート
ミキサーを用い、３℃で３分間練り混ぜ、均一状態にし
て、セルフレベリング性水性組成物を調製した。調製し
た各セルフレベリング性水性組成物について、以下に示
す品質試験を行ない、結果を表４及び表５に示した。Test Category 2 (Preparation and Evaluation of Self-Leveling Aqueous Composition) Examples and Comparative Examples The following materials were used in the mixing ratios shown in Table 3 at 3 ° C. for 3 minutes using a Hobart mixer. A self-leveling aqueous composition was prepared by kneading and homogenizing. Each of the prepared self-leveling aqueous compositions was subjected to the following quality tests, and the results are shown in Tables 4 and 5.
【００４０】・材料 基材：セメント（秩父小野田社製の普通ポルトランドセ
メント）と天然II型無水石膏（タイ産、ブレーン比表面
積３９００／ｇ）との混合物 分散剤：試験区分１で合成した水溶性ビニル共重合体 凝結促進剤：硫酸カリウム 収縮低減剤：ポリオキシプロピレングリコール（オキシ
プロピレンの繰り返し数７） 増粘剤：メチルセルロース（信越化学社製のＳＥＢ−０
４Ｔ） 消泡剤：アルコール系非イオン界面活性剤（サンノプコ
社製のＳＮディフォーマー１４ＨＰ） 骨材：珪砂（山形産、粗粒率２．３）Material: Mixture of cement (ordinary Portland cement manufactured by Chichibu Onoda Co.) and natural type II anhydrous gypsum (produced in Thailand, Blaine specific surface area 3900 / g) Dispersant: water-soluble synthesized in Test Category 1 Vinyl copolymer Coagulation accelerator: Potassium sulfate Shrinkage reducer: Polyoxypropylene glycol (oxypropylene repeating number 7) Thickener: Methylcellulose (SEB-0 manufactured by Shin-Etsu Chemical Co., Ltd.
4T) Defoaming agent: Alcohol-based nonionic surfactant (SN Deformer 14HP manufactured by San Nopco) Aggregate: Quartz sand (Yamagata, coarse grain ratio 2.3)
【００４１】・品質試験 練り上がり時のフロー値：調製直後の各セルフレベリン
グ性水性組成物について、社団法人日本建築学会のＪＡ
ＳＳ１５Ｍ−１０３（セルフレベリング材の品質基準）
にしたがい、３℃で測定した。 ３時間後及び６時間後のフロー値：調製した各セルフレ
ベリング性水性組成物を静止の状態で保持し、３時間後
及び６時間後に練りさじにて約１分間練り混ぜた後、上
記練り上がり時のフロー値の場合と同様に求めた。 練り上がり時のＪロート値：調製直後の各セルフレベリ
ング性水性組成物について、社団法人土木学会のコンシ
ステンシー試験方法（案）１７にしたがい、３℃で測定
した。但し、Ｊロートは落ち口の内径が１０mmのものを
使用した。 ３時間後及び６時間後のＪロート値：調製した各セルフ
レベリング性水性組成物を静止の状態で保持し、３時間
後及び６時間後に練りさじにて約１分間練り混ぜた後、
上記練り上がり時のＪロート値の場合と同様に求めた。 凝結時間：セメントの物理試験方法（ＪＩＳ−Ｒ−５２
０１）にしたがって測定した。 圧縮強度：セメントの物理試験方法（ＪＩＳ−Ｒ−５２
０１）にしたがって、材令７日及び２８日で測定した。
但し、養生は気中養生を行なった（２０℃×６０％Ｒ
Ｈ）。 表面強度：社団法人日本建築学会のＪＡＳＳ１５Ｍ−１
０３（セルフレベリング材の品質基準）にしたがい、建
研式引っ張り試験器を用いて材令１４日及び２８日で測
定した。 白華：コンクリート床に厚さが１０mmで３０cm×３０cm
角に各セルフレベリング性水性組成物を打設し、５℃×
６０％ＲＨにて７日間養生した後、その表面の白華を採
取し、単位面積当たりのグラム数で求めた。Quality test Flow value at the time of kneading: For each self-leveling aqueous composition immediately after preparation, JA of Architectural Institute of Japan
SS15M-103 (Quality standard for self-leveling materials)
Therefore, the measurement was performed at 3 ° C. Flow value after 3 hours and after 6 hours: Each prepared self-leveling aqueous composition was held still, and after 3 hours and 6 hours, kneaded with a kneading spoon for about 1 minute, and then the above kneading It was calculated in the same manner as in the case of the flow value at time. J funnel value at the time of kneading: Each self-leveling aqueous composition immediately after preparation was measured at 3 ° C. according to the consistency test method (draft) 17 of the Japan Society of Civil Engineers. However, the J funnel used had an inside diameter of the outlet of 10 mm. J funnel value after 3 hours and after 6 hours: Each prepared self-leveling aqueous composition was held stationary, and after 3 hours and 6 hours, kneading with a kneading spoon for about 1 minute,
It was determined in the same manner as in the case of the J funnel value at the time of kneading. Setting time: Physical test method of cement (JIS-R-52
01). Compressive strength: Cement physical test method (JIS-R-52
According to 01), the material was measured on the 7th and 28th days.
However, the curing was carried out in the air (20 ° C x 60% R
H). Surface strength: JASS15M-1 of the Architectural Institute of Japan
In accordance with No. 03 (quality standard for self-leveling materials), measurement was performed using a Kenken tensile tester at 14 and 28 days of age. White flower: 30 cm x 30 cm with a thickness of 10 mm on the concrete floor
Each self-leveling aqueous composition was cast in the corner, and 5 ° C ×
After curing at 60% RH for 7 days, white scallions on the surface were collected and determined in grams per unit area.
【００４２】[0042]
【表３】 [Table 3]
【００４３】表３において、 表中の数値：使用量（重量部）In Table 3, numerical values in the table: amount used (parts by weight)
【００４４】[0044]
【表４】 [Table 4]
【００４５】表４において、 評価１：６時間後のフロー値が２０５mm以上であり且つ
Ｊロート値が４０秒以下である場合を○、それ以外を×
としたIn Table 4, evaluation 1: ◯ when the flow value after 6 hours is 205 mm or more and J funnel value is 40 seconds or less, and x otherwise.
And
【００４６】[0046]
【表５】 [Table 5]
【００４７】表５において、 評価２：始発が４８０分以上であり且つ終結が９００分
以内である場合を○、それ以外を×とした 評価３：材令７日が２５０kgf／cm2以上であり且つ材令
２８日が３００kgf／cm2以上である場合を○、それ以外
を×とした 評価４：材令２８日が１５kgf／cm2以上である場合を
○、それ以外を×とした 評価５：白華量が２ｇ／ｍ2以下である場合を○、それ
以外を×としたIn Table 5, Evaluation 2: When the initial start was 480 minutes or more and the end was within 900 minutes, it was evaluated as ○, and the other cases were evaluated as Evaluation 3: Evaluation 7 days was 250 kgf / cm 2 or more Also, when the material age 28 days is 300 kgf / cm 2 or more, it is evaluated as ○, and the others are evaluated as ×. Evaluation 4: When the material age 28 days is 15 kgf / cm 2 or more, it is evaluated as ○, and the other cases are evaluated as × 5. : When the amount of white sinter was 2 g / m 2 or less, it was evaluated as ◯, and other than that was evaluated as x
【００４８】[0048]
【発明の効果】既に明らかなように、以上説明した本発
明には、低温下においても長時間に亘り優れた流動性を
発現し、また優れた強度及び表面外観の硬化体を得るこ
とができるという効果がある。As is apparent from the above, according to the present invention described above, it is possible to obtain a cured product which exhibits excellent fluidity over a long period of time even at a low temperature and has excellent strength and surface appearance. There is an effect.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松久 真人 千葉県佐倉市大作２−４−２ 秩父小野田 株式会社中央研究所内 (72)発明者 佐藤 和弘 千葉県佐倉市大作２−４−２ 秩父小野田 株式会社中央研究所内 (72)発明者 芦谷原 知 千葉県佐倉市大作２−４−２ 秩父小野田 株式会社中央研究所内 (72)発明者 細野 克夫 千葉県佐倉市大作２−４−２ 秩父小野田 株式会社中央研究所内 (72)発明者 木之下 光男 愛知県豊川市為当町椎木308番地 (72)発明者 荒島 猛 愛知県蒲郡市平田町下五反田１番地の２ (72)発明者 三浦 義雅 愛知県西尾市鵜ケ池町中屋敷55番地 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masato Matsuhisa 2-4-2 Daisaku Sakura City, Chiba Prefecture, Chichibu Onoda Central Research Institute Co., Ltd. (72) Kazuhiro Sato 2-4-2 Daisaku Sakura City, Chiba Prefecture Chichibu Onoda Central Research Institute Co., Ltd. (72) Inventor Satoshi Ashiyahara 2-4-2 Daisaku Sakura, Chiba Prefecture Chichibu Onoda Co., Ltd. (72) Inventor Katsuo Hosono 2-4-2 Daisaku Sakura City, Chiba Chichibu Onoda Co., Ltd. (72) Inventor Mitsuo Kinoshita Mitsuo Kinoshita 308 Shiiki, Tomegawa-cho, Toyokawa-shi, Aichi (72) Inventor Takeshi Arashima 2 1-shimogotanda, Hirata-cho, Gamagori-shi, Aichi (72) Inventor Yoshimasa Miura Nishio, Aichi 55 Nakayashiki, Ugaike-cho
Claims (4)
ト／天然II型無水石膏＝４０／６０〜８０／２０（重量
比）の比率で混合した基材１００重量部に対し、下記の
分散剤を０．１〜３重量部の割合で含有して成ることを
特徴とするセルフレベリング性水性組成物。 分散剤：下記の式１で示される構成単位Ａ、下記の式２
で示される構成単位Ｂ、下記の式３で示される構成単位
Ｃ、下記の式４で示される構成単位Ｄ、下記の式５で示
される構成単位Ｅ、下記の式６で示される構成単位Ｆ及
び下記の式７で示される構成単位Ｇから成る水溶性ビニ
ル共重合体であって、全構成単位中、構成単位Ａと構成
単位Ｂとの合計量が２５〜４５重量％、構成単位Ｂと構
成単位Ｃとの合計量が２５〜５０重量％、構成単位Ｄと
構成単位Ｅとの合計量が５〜２５重量％及び残部が構成
単位Ｆと構成単位Ｇとであり、且つ構成単位Ｂ／構成単
位Ａの比率が１５／８５〜４０／６０（重量比）、構成
単位Ｃ／構成単位Ｂの比率が６４／３６〜８５／１５
（重量比）及び構成単位Ｅ／構成単位Ｄの比率が２５／
７５〜７５／２５（重量比）である水溶性ビニル共重合
体 【式１】 【式２】 【式３】 【式４】 【式５】 【式６】 【式７】 （式１〜式７において、 Ｒ1，Ｒ3，Ｒ4，Ｒ5：Ｈ又はＣＨ3 Ｒ2：Ｃ6Ｈ5又はＣ6Ｈ5ＣＨ2 Ｍ1，Ｍ2，Ｍ3：アルカリ金属、アルカリ土類金属及び
有機アミンから選ばれるカチオン基 ｐ：１０〜３０の整数 ｑ：７〜５０の整数 ｒ：１〜２０の整数）1. A dispersant described below based on 100 parts by weight of a base material in which cement and natural type II anhydrous gypsum are mixed at a ratio of cement / natural type II anhydrous gypsum = 40/60 to 80/20 (weight ratio). A self-leveling aqueous composition, characterized by containing 0.1 to 3 parts by weight. Dispersant: Structural unit A represented by Formula 1 below, Formula 2 below
A structural unit B represented by the following formula 3, a structural unit C represented by the following formula 3, a structural unit D represented by the following formula 4, a structural unit E represented by the following formula 5, and a structural unit F represented by the following formula 6. And a water-soluble vinyl copolymer comprising a structural unit G represented by the following formula 7, wherein the total amount of the structural unit A and the structural unit B is 25 to 45% by weight, and the structural unit B is The total amount of the structural unit C is 25 to 50% by weight, the total amount of the structural unit D and the structural unit E is 5 to 25% by weight, and the balance is the structural unit F and the structural unit G, and the structural unit B / The ratio of the structural unit A is 15/85 to 40/60 (weight ratio), and the ratio of the structural unit C / the structural unit B is 64/36 to 85/15.
(Weight ratio) and the ratio of structural unit E / structural unit D is 25 /
Water-soluble vinyl copolymer having a weight ratio of 75 to 75/25 [Formula 1] (Equation 2) (Equation 3) (Equation 4) [Formula 5] [Formula 6] [Formula 7] (In the formulas 1 to 7, R 1 , R 3 , R 4 , R 5 : H or CH 3 R 2 : C 6 H 5 or C 6 H 5 CH 2 M 1 , M 2 , M 3 : alkali metal, Cationic group selected from alkaline earth metals and organic amines p: integer of 10 to 30 q: integer of 7 to 50 r: integer of 1 to 20)
ト／天然II型無水石膏＝５０／５０〜７０／３０（重量
比）の比率で混合した基材１００重量部に対し、分散剤
を０．５〜２重量部の割合で含有して成る請求項１記載
のセルフレベリング性水性組成物。2. A dispersant is added to 100 parts by weight of a base material in which cement and natural type II anhydrous gypsum are mixed at a ratio of cement / natural type II anhydrous gypsum = 50/50 to 70/30 (weight ratio). The self-leveling aqueous composition according to claim 1, which is contained in an amount of 0.5 to 2 parts by weight.
Ｆ及びＧから成る水溶性ビニル共重合体であって、全構
成単位中、構成単位Ａと構成単位Ｂとの合計量が３０〜
４０重量％、構成単位Ｂと構成単位Ｃとの合計量が３０
〜４５重量％、構成単位Ｄと構成単位Ｅとの合計量が５
〜２０重量％及び残部が構成単位Ｆと構成単位Ｇとであ
り、且つ構成単位Ｂ／構成単位Ａの比率が１５／８５〜
３５／６５（重量比）、構成単位Ｃ／構成単位Ｂの比率
が７０／３０〜８５／１５（重量比）及び構成単位Ｅ／
構成単位Ｄの比率が４０／６０〜７５／２５（重量比）
である水溶性ビニル共重合体である請求項１又は２記載
のセルフレベリング性水性組成物。3. A dispersant is structural unit A, B, C, D, E,
A water-soluble vinyl copolymer comprising F and G, wherein the total amount of the structural unit A and the structural unit B is 30 to 30 in all structural units.
40% by weight, the total amount of the structural units B and C is 30
~ 45% by weight, the total amount of the structural unit D and the structural unit E is 5
˜20% by weight and the balance is structural unit F and structural unit G, and the ratio of structural unit B / structural unit A is 15/85
35/65 (weight ratio), the ratio of structural unit C / structural unit B is 70/30 to 85/15 (weight ratio), and structural unit E /
The ratio of the structural unit D is 40/60 to 75/25 (weight ratio)
The self-leveling aqueous composition according to claim 1 or 2, which is a water-soluble vinyl copolymer.
００の水溶性ビニル共重合体である請求項１、２又は３
記載のセルフレベリング性水性組成物。4. The dispersant has a number average molecular weight of 2000 to 200.
00 is a water-soluble vinyl copolymer.
The self-leveling aqueous composition described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11644395A JP3559094B2 (en) | 1995-04-17 | 1995-04-17 | Self-leveling aqueous composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11644395A JP3559094B2 (en) | 1995-04-17 | 1995-04-17 | Self-leveling aqueous composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08290955A true JPH08290955A (en) | 1996-11-05 |
| JP3559094B2 JP3559094B2 (en) | 2004-08-25 |
Family
ID=14687245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11644395A Expired - Fee Related JP3559094B2 (en) | 1995-04-17 | 1995-04-17 | Self-leveling aqueous composition |
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| Country | Link |
|---|---|
| JP (1) | JP3559094B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2160500A1 (en) * | 1999-06-25 | 2001-11-01 | Univ Madrid Politecnica | Set of native anhydrite sprayable levelling mortars, for use on horizontal surfaces, comprises mixes of cement and superplasticiser |
| US7638563B2 (en) | 2003-05-09 | 2009-12-29 | Nippon Shokubai Co., Ltd. | Polycarboxylic acid concrete admixture |
| JP2010143586A (en) * | 2008-12-16 | 2010-07-01 | Ube Ind Ltd | Cement-based pre-mix product |
| JP2011001222A (en) * | 2009-06-18 | 2011-01-06 | Ohbayashi Corp | Polymer cement mortar and finishing method |
| CN111704412A (en) * | 2020-06-21 | 2020-09-25 | 济南惠泽新型建材有限公司 | Lightweight aggregate self-leveling material, preparation method and construction method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07267704A (en) * | 1994-03-31 | 1995-10-17 | Chichibu Onoda Cement Corp | Self-leveling aqueous composition |
-
1995
- 1995-04-17 JP JP11644395A patent/JP3559094B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07267704A (en) * | 1994-03-31 | 1995-10-17 | Chichibu Onoda Cement Corp | Self-leveling aqueous composition |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2160500A1 (en) * | 1999-06-25 | 2001-11-01 | Univ Madrid Politecnica | Set of native anhydrite sprayable levelling mortars, for use on horizontal surfaces, comprises mixes of cement and superplasticiser |
| US7638563B2 (en) | 2003-05-09 | 2009-12-29 | Nippon Shokubai Co., Ltd. | Polycarboxylic acid concrete admixture |
| JP2010143586A (en) * | 2008-12-16 | 2010-07-01 | Ube Ind Ltd | Cement-based pre-mix product |
| JP2011001222A (en) * | 2009-06-18 | 2011-01-06 | Ohbayashi Corp | Polymer cement mortar and finishing method |
| CN111704412A (en) * | 2020-06-21 | 2020-09-25 | 济南惠泽新型建材有限公司 | Lightweight aggregate self-leveling material, preparation method and construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3559094B2 (en) | 2004-08-25 |
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