JPS62235242A - Manufacture of calcium hydroxide water dispersion - Google Patents
Manufacture of calcium hydroxide water dispersionInfo
- Publication number
- JPS62235242A JPS62235242A JP7794786A JP7794786A JPS62235242A JP S62235242 A JPS62235242 A JP S62235242A JP 7794786 A JP7794786 A JP 7794786A JP 7794786 A JP7794786 A JP 7794786A JP S62235242 A JPS62235242 A JP S62235242A
- Authority
- JP
- Japan
- Prior art keywords
- calcium hydroxide
- sulfite
- water
- modified amino
- aqueous dispersion
- 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.)
- Pending
Links
- 239000000920 calcium hydroxide Substances 0.000 title claims description 29
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 title claims description 28
- 229910001861 calcium hydroxide Inorganic materials 0.000 title claims description 28
- 239000006185 dispersion Substances 0.000 title claims description 23
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title description 24
- 229920005989 resin Polymers 0.000 claims description 18
- 239000011347 resin Substances 0.000 claims description 18
- KCZIUKYAJJEIQG-UHFFFAOYSA-N 1,3,5-triazin-2-amine Chemical class NC1=NC=NC=N1 KCZIUKYAJJEIQG-UHFFFAOYSA-N 0.000 claims description 8
- 235000011116 calcium hydroxide Nutrition 0.000 description 26
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 13
- 239000011575 calcium Substances 0.000 description 8
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 7
- 235000011941 Tilia x europaea Nutrition 0.000 description 7
- 239000000654 additive Substances 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 7
- 239000000292 calcium oxide Substances 0.000 description 7
- 235000012255 calcium oxide Nutrition 0.000 description 7
- 239000004571 lime Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000004094 surface-active agent Substances 0.000 description 6
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 5
- 239000012153 distilled water Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 229920000877 Melamine resin Polymers 0.000 description 3
- 239000004480 active ingredient Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 description 2
- 235000010262 sodium metabisulphite Nutrition 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- -1 whitewash Substances 0.000 description 2
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- MBHRHUJRKGNOKX-UHFFFAOYSA-N [(4,6-diamino-1,3,5-triazin-2-yl)amino]methanol Chemical group NC1=NC(N)=NC(NCO)=N1 MBHRHUJRKGNOKX-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical group [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004814 ceramic processing Methods 0.000 description 1
- 230000005591 charge neutralization Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical compound O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000011507 gypsum plaster Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000011431 lime mortar Substances 0.000 description 1
- 239000011508 lime plaster Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N methanol Natural products OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 238000001935 peptisation Methods 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 125000001174 sulfone group Chemical group 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/10—Lime cements or magnesium oxide cements
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (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】
〔産業上の利用分野〕
本発明は、水酸化カルシウムを含む水分散体の製造方法
に関する。詳しくは、亜硫酸変性されたアミノ−Ｓ−ト
リアジン樹脂を添加剤として用いて水酸化カルシウムを
含む水分散体を製造する方法であり、分散性の改良に伴
う粘度低下による作業性の向上、同一作業性に於ける濃
度上昇による有効成分上昇などの改善された水分散体の
製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for producing an aqueous dispersion containing calcium hydroxide. Specifically, it is a method for producing an aqueous dispersion containing calcium hydroxide using a sulfite-modified amino-S-triazine resin as an additive, and it improves workability by reducing viscosity due to improved dispersibility, and allows for the same work. The present invention relates to a method for producing an aqueous dispersion with improved properties such as increased concentration of active ingredients.
本発明によって得られる水酸化カルシウムを含む水分散
体は、濃度により石灰パテ、石灰スラリー或いは石灰乳
として用いられ、或いは他物と配合して石灰プラスター
、石灰モルタル、しっくい、ドロマイトプラスター等と
して単独に、或いはこれらと石こうプラスター等と混合
して、広く建築用、土木用、製紙工業用等産業上に広（
利用される。The aqueous dispersion containing calcium hydroxide obtained by the present invention can be used as lime putty, lime slurry, or lime milk depending on the concentration, or can be used alone as lime plaster, lime mortar, whitewash, dolomite plaster, etc. by blending with other materials. , or by mixing these with gypsum plaster, etc., it is widely used in industries such as architecture, civil engineering, and paper manufacturing.
used.
従来、水酸化カルシウムの水分散体は酸化カルシウムＣ
ａＯを水和させて水酸化カルシウムＣａ（ＯＨ）、とじ
、これを過剰の水に分散したもので特に添加剤等を使用
しないものがある。又、固相分散系での分散性の向上（
粘度低下）、或いは濃度上昇の目的で界面活性剤等が通
常用いられている。Conventionally, an aqueous dispersion of calcium hydroxide is calcium oxide C.
There is a product in which aO is hydrated to form calcium hydroxide (Ca(OH)), and this is dispersed in excess water without using any additives. In addition, improved dispersibility in solid phase dispersion systems (
Surfactants and the like are usually used for the purpose of reducing viscosity (reducing viscosity) or increasing concentration.
従来、特に添加剤等を使用しない場合は、水酸化カルシ
ウムの濃度を上昇するときは粘度が上昇して作業性が低
下する。Conventionally, when the concentration of calcium hydroxide is increased, especially when no additives are used, the viscosity increases and workability decreases.
即ち、いわゆる液体で扱い得る石灰乳（ＩＩｌｉｌｋｏ
ｆ ｌｉｍｅ）と称せられるものは、「石膏石灰ハンド
ブック」技報堂、昭和４７年、第１４０頁に記載された
如く、ＣａＯとして約２０％程度であり、之を越えると
石灰スラリー（ｌｉｍｅ ５ｌｕｒｒｙ）として硬いク
リーム状となり、更にＣａＯの含有量が４０％を越える
と石灰パテ（ｌｉｍｅ ｐｕｔｔｙ） と呼ばれるチ
キソトロピックな可塑剤の塊となる。Namely, the so-called liquid milk of lime (IIlilko
As described in "Gypsum Lime Handbook", Gihodo, 1971, p. 140, what is called "Gypsum Lime" is about 20% CaO, and if it exceeds this, it becomes hard as lime slurry. It becomes creamy, and if the CaO content exceeds 40%, it becomes a lump of thixotropic plasticizer called lime putty.
従って、−ｍ的用途に於いては作業性の面から流動性の
大きいものを望み、目的の達成（仕上がり、強度等）面
から見れば異物たる過剰水の減少が望まれる等、相反す
る性質が要求される。Therefore, in -m applications, high fluidity is desired from the viewpoint of workability, and from the viewpoint of achieving the purpose (finish, strength, etc.) it is desirable to reduce excess water, which is a foreign substance, and these are contradictory properties. is required.
また、固相分散系の分散性の向上（粘度低下）には、通
常界面活性剤が用いられるが、界面活性剤は水と親水性
固体の表面に於いては効果が少なく、又、気泡の発生が
容易となる等の欠点があった。In addition, surfactants are usually used to improve the dispersibility (reduce viscosity) of solid-phase dispersion systems, but surfactants have little effect on water and the surface of hydrophilic solids, and they also suppress air bubbles. There were disadvantages such as easy occurrence.
本発明は、これらの欠点を解消するもので水酸化カルシ
ウム粒子の表面を被覆して分散性を改良せしめることに
より、水分散体の粘度低下および気泡の発生がない作業
性に優れた？Ｍｉ ＪＷ−な水酸化カルシウムの水分散
体を得る方法を提供せんとするものである。The present invention solves these drawbacks by coating the surface of calcium hydroxide particles to improve dispersibility, resulting in excellent workability without reducing the viscosity of the aqueous dispersion and generating no bubbles. It is an object of the present invention to provide a method for obtaining an aqueous dispersion of calcium hydroxide.
本発明は、水酸化カルシウム水分散体の製造の際に水溶
性で、しかも水酸化カルシウム粒子と親和性のある官能
基を有する特定の樹脂を添加することにより、所期の目
的を達成することを見い出し、本発明を完成するに至っ
た。The present invention achieves the intended purpose by adding a specific resin that is water-soluble and has a functional group that has an affinity for calcium hydroxide particles during the production of an aqueous calcium hydroxide dispersion. They discovered this and completed the present invention.
即ち、本発明は、亜硫酸変性されたアミノ−８−トリア
ジン樹脂を水酸化カルシウムを含有する水分散体に添加
することを特徴とする水酸化カルシウム水分散体の製造
方法である。That is, the present invention is a method for producing an aqueous calcium hydroxide dispersion, which comprises adding a sulfite-modified amino-8-triazine resin to an aqueous dispersion containing calcium hydroxide.
本発明に於いて使用される亜硫酸変性されたアミノ−ｓ
−トリアジン樹脂とは、スルフォン酸ｇ−ｓｏ、−を有
するメラミンフォルムアルデヒド縮合生成物である。Sulfite-modified amino-s used in the present invention
- Triazine resin is a melamine formaldehyde condensation product with sulfonic acid g-so, -.
即ち、これはアミノ−ｓ−トリアジン例えばメラミン ＮＨ。That is, it is an amino-s-triazine such as melamine. N.H.
り ＼
Ｎ
Ｉ ＩＩ
のスルフォメチル化による Ｎ −ＣＨ，ＳＯ３Ｎａ
基を有する化合物である。N -CH,SO3Na by sulfomethylation of
It is a compound that has a group.
前記化合物は、アミノ−ｓ−トリアジンとフォルムアル
デヒドとの反応により、生成したアミノ−Ｓ−トリアジ
ン樹脂中に存在するメチロール化合物（Ｎ−Ｃ１１□Ｏ
Ｈ） に酸性亜硫酸例えば亜硫酸水素ナトリウム（Ｎ
ａＨ３Ｏ：＋） 、二亜硫酸ナトリウム（ｓａｚｓ２ｏ
ｓ）を反応させることにより、−５０３−基が付加して
得られるアニオン性の水溶性化合物である。The compound is a methylol compound (N-C11□O
H) Add acidic sulfite such as sodium bisulfite (N
aH3O:+), sodium disulfite (sazs2o
It is an anionic water-soluble compound obtained by adding a -503- group by reacting s).
前記の亜硫酸変性されたアミノ−ｓ−トリアジン樹脂を
添加して水酸化カルシウムを含む水分散体を製造する方
法は、予め水中に亜硫酸変性されたアミノ−５−）リア
ジン樹脂若しくはその塩を溶解しておき、その中に生石
灰ＣａＯを添加して消化、即ちＣａＯ＋Ｈ２Ｏ＝Ｃａ（
Ｏ）Ｉ）ｚの反応と水酸化カルシウムＣａ （ＯＨ）
ｚの分散を同時に行うか、又は既に消化により生成した
Ｃａ （ＯＨ） ｚ若しくは、その水和物′を添加する
方法、又は、ＣａＯと水との反応、若しくはＣａ （０
１１） ｚの水への分散により生成したＣａ （ＯＨ）
ｚの懸濁液中に前記亜硫酸変性されたアミノ−５−ト
リアジン樹脂若しくはその塩をそのまま、或”いは水溶
液として添加する等の方法により得ることができる。The method for producing an aqueous dispersion containing calcium hydroxide by adding the sulfite-modified amino-s-triazine resin described above involves dissolving the sulfite-modified amino-5-)riazine resin or its salt in water in advance. Then add quicklime CaO to it and digest it, that is, CaO+H2O=Ca(
O)I)z reaction and calcium hydroxide Ca (OH)
At the same time, dispersion of z is carried out, or a method of adding Ca (OH) z or its hydrate which has already been produced by digestion, a method of reacting CaO with water, or a method of adding Ca (OH)
11) Ca (OH) generated by dispersing z in water
It can be obtained by a method such as adding the sulfite-modified amino-5-triazine resin or its salt to a suspension of z as it is or as an aqueous solution.
本発明に使用される亜硫酸変性されたアミノ−ｓ−トリ
アジン樹脂は水溶性であれば良く、又その添加量は、水
酸化カルシウムの粒度により異なるが水酸化カルシウム
に対して０．０５〜５％好ましくは０．１〜３％であり
、０．０５未満の場合はその効果は高く、５％を越えて
多く添加してもその効果は増大しない。The sulfite-modified amino-s-triazine resin used in the present invention only needs to be water-soluble, and the amount added varies depending on the particle size of calcium hydroxide, but is 0.05 to 5% based on calcium hydroxide. Preferably it is 0.1 to 3%; if it is less than 0.05, the effect is high, and if it is added in excess of 5%, the effect does not increase.
本発明に使用される亜硫酸変性されたアミノ−Ｓ−トリ
アジン樹脂は、水酸化カルシウムに吸着し易いスルフォ
ン基を有し、且つ残余のメチロールメラミン基は親水性
であり、しかも極性を有する。The sulfite-modified amino-S-triazine resin used in the present invention has a sulfone group that is easily adsorbed to calcium hydroxide, and the remaining methylolmelamine groups are hydrophilic and polar.
従って、水酸化カルシウム粒子の表面に吸着することに
より水酸化カルシウム粒子の相互付着を防止し、又界面
エネルギーを低下させることにより結晶生長による粒子
の大型化を防止する。又、親木基により水中での分散性
を改良すると共に極性を有するため粒子相互の反発によ
り固い沈澱の生成を防止する。Therefore, adsorption on the surface of calcium hydroxide particles prevents the calcium hydroxide particles from adhering to each other, and by lowering the interfacial energy, it prevents the particles from increasing in size due to crystal growth. In addition, the parent wood group improves dispersibility in water, and since it has polarity, it prevents the formation of hard precipitates due to mutual repulsion of particles.
而して、亜硫酸変性されたアミノ−Ｓ−トリアジン樹脂
は、無色の透明水溶液化し得るものであり、石灰質の白
色を害することなく、且つ発泡を促進して作業性を害す
ることもない。Thus, the sulfite-modified amino-S-triazine resin can be made into a colorless transparent aqueous solution, does not impair the white color of limestone, and does not impair workability by promoting foaming.
而して、本発明の添加剤の有効なる所以はセラミックサ
イエンスシリーズ８「セラミックプロセシング」技報堂
出版、昭和６０年、第１０６頁に述べられる如く、「泥
しよう」に対して解膠と呼ばれる分散状態の形成にある
。Therefore, the reason why the additive of the present invention is effective is that it has a dispersion state called peptization, as described in Ceramic Science Series 8 "Ceramic Processing", Gihodo Publishing, 1985, p. 106. in the formation of
又、回書第１０８〜１１０頁に示す如く、イオンが水酸
化カルシウムの如（Ｃａ”として高原子価である場合は
電気二重層の厚さが薄くなる。Further, as shown on pages 108 to 110 of the Circular, when the ion has a high valence such as calcium hydroxide (Ca''), the thickness of the electric double layer becomes thinner.
従って、この場合単純なる電荷の中和のみでなく一価の
Ｒ−３Ｏ３−を持ちＣａ”に対して二重層を拡大し低粘
性を実現し得ると考えられる。Therefore, in this case, it is considered that not only simple charge neutralization but also monovalent R-3O3- expands the double layer with respect to Ca'', thereby realizing low viscosity.
合成例１
く亜硫酸変性された
アミノ−Ｓ−＋−リアジン樹脂の合成〉３７％ホルマリ
ン５６７ｇ （フォルムアルデヒドとして６．９９モル
）に水酸化ナトリウムを加えｐＨを４．５とし、これに
メラミン２９４ｇ（２，３３モル）を徐々に加えて混合
する。このスラリーを徐々に昇温して７５℃で透明とな
るまで約２０分間加熱する。Synthesis Example 1 Synthesis of sulfite-modified amino-S-+-riazine resin> Sodium hydroxide was added to 567 g of 37% formalin (6.99 mol as formaldehyde) to adjust the pH to 4.5, and 294 g of melamine ( 2.33 mol) and mix. The slurry is heated gradually to 75° C. for about 20 minutes until it becomes transparent.
この中に２０％ＮａＯＨ４０ｇを加えるとｐＨが１２と
なり、次いでこの中にピロ亜硫酸ナトリウムＮａ、５．
０５を２２２ｇ（１，１７モル）加えて７８℃〜８０℃
で２時間加熱する。When 40g of 20% NaOH is added to this, the pH becomes 12, and then sodium pyrosulfite (Na), 5.
Add 222g (1.17 mol) of 05 and heat to 78℃~80℃
Heat for 2 hours.
次いで、予め濃硫酸７０ｇ（０，７モル）を水２１１６
ｇに溶解したものを加えて混合し、ｐＨを５として５０
℃で５時間反応させた。これに２０％Ｎａ０１１約５０
ｇを加えてｐｌ＋を９としたものを４０℃、２ Ｔｏｒ
ｒ蒸留して不揮発公約２３％の亜硫酸変性されたアミノ
−Ｓ−トリアジン樹脂（Ｓ−１）を合成した。Next, 70 g (0.7 mol) of concentrated sulfuric acid was added in advance to 2116 ml of water.
Add the solution dissolved in g and mix, adjust the pH to 5 and adjust to 50
The reaction was carried out at ℃ for 5 hours. Add to this 20% Na011 about 50
g was added to make pl+ 9 at 40°C and 2 Torr.
A sulfite-modified amino-S-triazine resin (S-1) having a non-volatile content of about 23% was synthesized by r-distillation.
実施例１
水酸化カルシウム（和光純薬、特級）の３００ｇに対し
て、予め２００ｇの蒸留水に合成例１で得た亜硫酸変性
されたアミノ−３−トリアジン樹脂（Ｓ−１）を第１表
に示す各々の使用量を溶解したものを使用して混練し、
次いで蒸留水を使用して混練して水分散を行い、ＪＩＳ
Ｒ５２０１に準拠してビカー針装置を用いて標準混水量
を測定した。Example 1 The sulfite-modified amino-3-triazine resin (S-1) obtained in Synthesis Example 1 was added to 300 g of calcium hydroxide (Wako Pure Chemical, special grade) in 200 g of distilled water in Table 1. Knead using the dissolved amount of each amount shown in
Next, water dispersion is performed by kneading using distilled water, and JIS
The standard amount of mixed water was measured using a Vicat needle device in accordance with R5201.
また、比較用として添加剤の無添加系、第１表に示す界
面活性剤を使用したものについても同様に試験した。In addition, for comparison, a system without additives and a system using a surfactant shown in Table 1 were similarly tested.
この時の各標準混水量の値を第１表に示す。The values of each standard mixed water amount at this time are shown in Table 1.
実施例２
水酸化カルシウム（前出）１２００ｇと水酸化マグネシ
ウム（和光純薬、特級）１０００ｇをヘンシュルミキサ
−を用いて３０分間混合したものを予め、１５００ｇの
蒸留水に合成例１で得た亜硫酸変性されたアミノ−Ｓ−
トリアジン樹脂を第２表に示す各々の使用量を溶解した
ものを使用して混練し、次いで蒸留水を使用して混練し
て水分散を行い、ＪＩＳ Ｒ５２０１に準拠してビカー
針装置を用いて標準混水量を測定した。Example 2 1200 g of calcium hydroxide (mentioned above) and 1000 g of magnesium hydroxide (Wako Pure Chemical, special grade) were mixed for 30 minutes using a Henschel mixer, and the mixture obtained in Synthesis Example 1 was added to 1500 g of distilled water in advance. Sulfite-modified amino-S-
The triazine resin dissolved in the amount shown in Table 2 was kneaded, then distilled water was kneaded to perform water dispersion, and a Vicat needle device was used in accordance with JIS R5201. The standard amount of mixed water was measured.
また、比較用として添加剤の無添加系、第２表に示す界
面活性剤を使用したものについても同様に試験した。In addition, for comparison, a system without additives and a system using a surfactant shown in Table 2 were also tested in the same manner.
この時の各標準混水量の値を第２表に示す。The values of each standard mixed water amount at this time are shown in Table 2.
実施例３
水酸化カルシウム（前出）１００ｇを容器に取り、これ
に合成例１で得た亜硫酸変性アミノ−Ｓ−）リアジン樹
脂（Ｓ−１）を第３表に示す各々の使用量を、予め２５
°Ｃの蒸留水と〔Ｓ−１〕中に含まれる水分との和が９
６ｇになるように調整した水溶液を用いて混練し、更に
２５℃に保持して５分間混練した後これを外径３１、５
ｍｍ、高さ３５ｍの回転円筒を用いるスト−マー粘度
計を用いて荷重０．４ ｋｇのときに１０回転に要する
時間を求めた。Example 3 100 g of calcium hydroxide (described above) was placed in a container, and the sulfite-modified amino-S-) riazine resin (S-1) obtained in Synthesis Example 1 was added to it in the amounts shown in Table 3. 25 in advance
The sum of distilled water at °C and the water contained in [S-1] is 9
After kneading with an aqueous solution adjusted to 6g and further kneading at 25°C for 5 minutes, the outer diameter was 31.5g.
The time required for 10 rotations at a load of 0.4 kg was determined using a Stormer viscometer using a rotating cylinder of mm and height of 35 m.
また、比較のため添加剤の無添加系、および第３表に示
す界面活性剤を用いて同様に試験した。For comparison, similar tests were conducted using a system without additives and a surfactant shown in Table 3.
これらの結果を第３表に示す。These results are shown in Table 3.
本文に説明し、且つ実施例からも明らかなように、本発
明の亜硫酸変性されたアミノ−Ｓ−＋−リアジン樹脂を
添加して水酸化カルシウムの水分散体を製造する方法に
於いて、亜硫酸変性されたアミノ−８−トリアジン樹脂
の添加により、得られる水分散体の粘度を低下せしめる
ことができる。As explained in the main text and clear from the examples, in the method for producing an aqueous dispersion of calcium hydroxide by adding the sulfite-modified amino-S-+-riazine resin of the present invention, sulfite By adding the modified amino-8-triazine resin, the viscosity of the resulting aqueous dispersion can be lowered.
それ故、同濃度に於いては作業性の向上、同粘度に於い
ては有効成分含量の上昇が得られる。また、気泡の発性
がない分散体を得ることができる。Therefore, the workability can be improved at the same concentration, and the active ingredient content can be increased at the same viscosity. In addition, a dispersion that does not generate bubbles can be obtained.
従って、土木建築用としては作業性の向上、或いは水量
の減少による収縮ひびわれの防止、その他工業用として
は有効成分たる水酸化カルシウム量の増加或いは除去さ
れる異物である水分の減少等の利点が生じ、原料として
の有効度が増大するため広〈産業上に利用することがで
きる。Therefore, for civil engineering and construction purposes, it has advantages such as improved workability and prevention of shrinkage cracks due to a decrease in water volume, and for other industrial purposes, it has advantages such as an increase in the amount of calcium hydroxide, an active ingredient, and a decrease in water, which is a foreign substance to be removed. It can be widely used industrially because it increases its effectiveness as a raw material.
Claims (1)
水酸化カルシウムを含む水分散体に添加することを特徴
とする水酸化カルシウム水分散体の製造方法。(1) A method for producing a calcium hydroxide aqueous dispersion, which comprises adding a sulfite-modified amino-S-triazine resin to an aqueous dispersion containing calcium hydroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7794786A JPS62235242A (en) | 1986-04-04 | 1986-04-04 | Manufacture of calcium hydroxide water dispersion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7794786A JPS62235242A (en) | 1986-04-04 | 1986-04-04 | Manufacture of calcium hydroxide water dispersion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62235242A true JPS62235242A (en) | 1987-10-15 |
Family
ID=13648225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7794786A Pending JPS62235242A (en) | 1986-04-04 | 1986-04-04 | Manufacture of calcium hydroxide water dispersion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62235242A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0874698A4 (en) * | 1996-01-04 | 2000-01-19 | Chemical Lime Ltd | Method of preventing corrosion in concrete pipe |
-
1986
- 1986-04-04 JP JP7794786A patent/JPS62235242A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0874698A4 (en) * | 1996-01-04 | 2000-01-19 | Chemical Lime Ltd | Method of preventing corrosion in concrete pipe |
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