JPS61281155A - Water-soluble composition - Google Patents
Water-soluble compositionInfo
- Publication number
- JPS61281155A JPS61281155A JP12369285A JP12369285A JPS61281155A JP S61281155 A JPS61281155 A JP S61281155A JP 12369285 A JP12369285 A JP 12369285A JP 12369285 A JP12369285 A JP 12369285A JP S61281155 A JPS61281155 A JP S61281155A
- Authority
- JP
- Japan
- Prior art keywords
- water
- acid
- soluble
- powder
- polymer compound
- 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
Abstract
Description
【発明の詳細な説明】
（１）発明の目的
〔産業上の利用分野〕
本発明は凝集沈澱法による廃水処理に用いる高分子凝集
剤水溶液、繊維工業に使用される糊剤水溶液、土木工事
に用いる高分子系掘削安定液等、広範囲の産業分野に使
用される水溶性組成物に関するものである。Detailed Description of the Invention (1) Purpose of the Invention [Field of Industrial Application] The present invention is applicable to a polymer flocculant aqueous solution used in wastewater treatment by coagulation-sedimentation method, a sizing agent aqueous solution used in the textile industry, and civil engineering work. The present invention relates to water-soluble compositions used in a wide range of industrial fields, such as polymeric drilling stabilizing fluids.
水溶性高分子化合物の粉末を水中に投入し、攪拌して溶
解する際、難溶性のかたまり（ママコ）が生成するため
に、短時間に溶解できないことがよく起る。このような
現象を回避するために、いくつかの提案がなされている
。When powder of a water-soluble polymer compound is poured into water and dissolved by stirring, it often occurs that the powder cannot be dissolved in a short period of time due to the formation of poorly soluble lumps (mako). Several proposals have been made to avoid such phenomena.
例えば粒子を大きくしてママコのできないようにするこ
とはよく行なわれているが、溶解に長時間を要するとい
う欠点がある。For example, it is common practice to make the particles larger to prevent mold formation, but this has the disadvantage that it takes a long time to dissolve.
また、水溶性高分子化合物の粉末に水溶性無機塩を混入
する提案があるが、「ママコ」現象を回避することは難
しく実用的ではない。There has also been a proposal to mix a water-soluble inorganic salt into the powder of a water-soluble polymer compound, but it is difficult to avoid the "mamako" phenomenon and is not practical.
水溶性高分子化合物の粉末をアルコール類で湿らせたり
、油類と混和したりする提案（例えば特公昭４８−３５
７０８号公報）は有効な方法ではあるが、アルコール類
で湿らす場合は、水溶性高分子化合物の粉末がペースト
状になったり、アルコール類が可燃性液体であるため取
扱上著しく危険であるという欠点がある。油類の混入は
、油類が水に不溶性のため、水溶液に油滴が浮くので、
好ましい方法ではない。A proposal was made to wet the powder of a water-soluble polymer compound with alcohol or mix it with oil (for example, Japanese Patent Publication No. 48-35
708) is an effective method, but when moistening with alcohol, the powder of the water-soluble polymer compound becomes paste-like, and alcohol is a flammable liquid, so it is extremely dangerous to handle. There are drawbacks. Contamination with oils occurs because oils are insoluble in water, so oil droplets float in an aqueous solution.
Not the preferred method.
また従来は水溶性高分子化合物の水溶液を調製するため
に、大きな溶解槽を設け、数時間乃至１日の溶解時間を
要していた。Furthermore, in the past, in order to prepare an aqueous solution of a water-soluble polymer compound, a large dissolution tank was provided and a dissolution time of several hours to one day was required.
以上述べたように、短時間に水に溶解し、ママコを生成
しない水溶性組成物として、十分な性能を有するものが
ないのが現状である。As described above, at present, there is no water-soluble composition that dissolves in water in a short period of time and has sufficient performance without producing mako.
彼細粒子に粉砕された水溶性高分子化合物の粉末が水に
短時間に溶解し、水中で「ママコ」を生じないような水
溶性組成物を提供せんとするものである。更に、常温で
十分な流動性のある粉末であり、且つ何らの不溶等分を
残さない水溶性組成物を提供せんとするものである。It is an object of the present invention to provide a water-soluble composition in which a powder of a water-soluble polymer compound pulverized into fine particles dissolves in water in a short time and does not cause "mamako" in water. Furthermore, it is an object of the present invention to provide a water-soluble composition which is a powder with sufficient fluidity at room temperature and which does not leave any insoluble residue.
（２）発明の構成
〔問題を解決するだめの手段〕
本発明者等は水溶性高分子化合物の粉末の溶解に際し、
該粉末の「ママコ」生成を抑制し、且つ該粉末が湿潤状
、粘結状あるいはペースト状等取扱いに不便な状態変化
をもたらさない処理剤として、炭酸水素アルカリ及び水
の存在下でこれと反応して二酸化炭素を生成せしめる固
形酸が極めて有効であることを見出して本発明を完成し
た。(2) Structure of the invention [Means for solving the problem] When dissolving the powder of a water-soluble polymer compound, the present inventors
As a processing agent that suppresses the formation of "mamako" in the powder and does not cause the powder to change to a state that is inconvenient to handle, such as wet, caking, or pasty, it reacts with it in the presence of alkali hydrogen carbonate and water. The present invention was completed based on the discovery that solid acids that produce carbon dioxide are extremely effective.
即ち本発明は水溶性高分子化合物粉末に上記処理剤を配
合してなる水溶性組成物である。That is, the present invention is a water-soluble composition comprising a water-soluble polymer compound powder mixed with the above-mentioned processing agent.
本発明に使用できる炭酸水素アルカリは、例えば炭酸水
素ナトリウム、炭酸水素カリウムの単独又は混合物であ
り、混合物の場合の混合比率は任意である。該炭酸水素
アルカリは常温で粉末であり、その粒度は微細であるほ
ど好ましく、具体的には２５０μｍ以下が好ましく、１
４９μｍ以下がさらに好ましい。粒度が２５０μｍを超
えると、水溶性高分子化合物粉末を水中で分散させるこ
とが困難となりやすい。The alkali hydrogen carbonate that can be used in the present invention is, for example, sodium hydrogen carbonate or potassium hydrogen carbonate alone or as a mixture, and in the case of a mixture, the mixing ratio is arbitrary. The alkali hydrogen carbonate is a powder at room temperature, and the finer the particle size, the more preferable it is, specifically preferably 250 μm or less, and 1
More preferably, it is 49 μm or less. When the particle size exceeds 250 μm, it tends to be difficult to disperse the water-soluble polymer compound powder in water.
４１！ＰＫ高純度である必要はないが、吸湿性不純物の
存在は、水溶性高分子化合物粉末のブロッキングの原因
となるので好ましくない。41! Although it is not necessary for the PK to be highly pure, the presence of hygroscopic impurities is undesirable because it causes blocking of the water-soluble polymer compound powder.
本発明で使用できる固形酸は、水の存在下で炭酸水素ア
ルカリと反応して二酸化炭素を生成するものであって、
例えばリン酸１アルカリ、クエン酸、コハク酸、シュウ
酸、酒石酸、リンゴ酸、マロン酸、マレイン酸、サリチ
ル酸等がかげられ、これらのうち少くとも１ｆｉが用い
られる。The solid acid that can be used in the present invention is one that reacts with an alkali hydrogen carbonate in the presence of water to produce carbon dioxide,
For example, monoalkali phosphoric acid, citric acid, succinic acid, oxalic acid, tartaric acid, malic acid, malonic acid, maleic acid, salicylic acid, etc. are used, and at least 1fi of these is used.
上記した固形酸のうちコハク酸、リン酸１アルカリ及び
リンゴ酸が特に好ましい。Among the solid acids mentioned above, succinic acid, monoalkali phosphoric acid and malic acid are particularly preferred.
固形酸の酸解離指数（ｐｋａ）は、炭酸のｐｋａ（ｐｋ
ａ＝６．５５．２５℃）より小さいもの、即ち炭酸より
強い酸である。固形酸の粒度も炭酸水素アルカリの粒度
と同じく２５０μｍ以下が好ましく、１４９μｍ以下が
さらに好ましい。The acid dissociation index (pka) of a solid acid is the pka (pk
a=6.55.25°C), that is, it is an acid stronger than carbonic acid. Like the particle size of the alkali hydrogen carbonate, the particle size of the solid acid is preferably 250 μm or less, more preferably 149 μm or less.
本発明で使用する水溶性高分子化合物の粉末は数多くあ
り、例えば（メタ）アクリル酸、（メタ）アクリル酸ア
ルカリ、アクリルアミド、エチレンオキシド、ビニルア
ルコール、ジメチルアミノエチル（メタ）アクリレート
の４級アンモニウム塩等のホモポリマーやコポリマー、
カルボキシメチルセルロース（ＣＭＣ）、メチルセルロ
ール、部分けん化ポリアクリル酸エステルならびにアル
ギン酸ソーダ、アラビアゴム、トラガントゴム、キザン
タンガム等の天然高分子化合物類等があげられる。There are many water-soluble polymer compound powders used in the present invention, such as (meth)acrylic acid, alkali (meth)acrylate, acrylamide, ethylene oxide, vinyl alcohol, quaternary ammonium salt of dimethylaminoethyl (meth)acrylate, etc. homopolymers and copolymers of
Examples include carboxymethyl cellulose (CMC), methylcellulose, partially saponified polyacrylic ester, and natural polymer compounds such as sodium alginate, gum arabic, gum tragacanth, and xanthan gum.
水溶性高分子化合物の粒度は少くとも９０チが５００μ
ｍ以下であることが好ましく、３５０μｍ以下であるこ
とがさらに好ましい。５００μｍを超えると、ママコに
はなりにくいが、比表面積が小さいため溶解に長時間を
要し好ましくなＸ、鬼。The particle size of the water-soluble polymer compound is at least 90mm and 500μ
It is preferably at most 350 μm, more preferably at most 350 μm. If it exceeds 500 μm, it is difficult to become a mako, but since the specific surface area is small, it takes a long time to dissolve, which is preferable.
上記水溶性高分子化合物粉末に対する炭酸水素アルカリ
と固形酸の合計の配合量は５〜１００重童チ、好ましく
は５〜５０重量％である。使用量５重量％未満では「マ
マコ」を防ぐ効果が不十分となりやす（，１００重量％
を超えると、水溶性高分子化合物本来の機能を損ったり
、経済的な不利をもたらしやすいので好ましくない。The total amount of alkali bicarbonate and solid acid added to the water-soluble polymer compound powder is 5 to 100% by weight, preferably 5 to 50% by weight. If the amount used is less than 5% by weight, the effect of preventing "mamako" is likely to be insufficient (100% by weight)
Exceeding this is not preferable because it tends to impair the original function of the water-soluble polymer compound and cause economic disadvantage.
炭酸水素アルカリと固形酸の量は、両者が反応した後の
ｐＨが、４〜７．５になる比率が最も効果的である。固
形酸として例えばコハク酸、リン酸１ナトリウム、リン
ゴ酸を使用する場合には、それらの酸のうちのＨの１つ
が炭酸水素アルカリと反応する量が好適である。The most effective amount of alkali bicarbonate and solid acid is such that the pH after reaction between the two is 4 to 7.5. When using, for example, succinic acid, monosodium phosphate, or malic acid as the solid acid, it is preferable that one of these acids reacts with the alkali bicarbonate in an amount.
水浴性組成物の調製には水溶性高分子化合物、炭酸水素
アルカリ、固形酸をそれぞれ予め所定の粒度に粉砕して
おいてから混合しても、混合状態で粉砕してもいずれで
もよい。但し、王者を同時に粉砕すると、炭酸水素アル
カリと固形酸が反応することがあるので、このような場
合には水溶性高分子化合物と炭酸水素アルカリ、水溶性
高分子化合物と固形酸を混合状態で粉砕してから、両者
混合するか、水に溶解する直前に混合するのが好ましい
。粉砕機は特殊なものは必要なく、冷凍粉砕機、ビクト
リーミル、ハンマーミル等が使用し得る。In preparing the water bath composition, the water-soluble polymer compound, alkali hydrogen carbonate, and solid acid may be ground in advance to a predetermined particle size and then mixed, or the mixed state may be ground. However, if the king is crushed at the same time, the alkali bicarbonate and solid acid may react, so in such cases, mix the water-soluble polymer compound and alkali bicarbonate, or the water-soluble polymer compound and solid acid. It is preferable to mix both after pulverizing, or to mix just before dissolving in water. A special crusher is not required, and a frozen crusher, victory mill, hammer mill, etc. can be used.
本発明の水溶性組成物は、水溶性高分子化合物と炭酸水
素アルカリ、固形酸の微粒から成り、水中に投入した時
、炭酸水素アルカリと固形酸が反応して無水炭酸ガス髪
発生し、水溶性高分子化合物粒同士の接触を防ぐと共に
水中での分散を促す作用を有する。従って、ママコを生
ずることなく、極めて短時間に目的とする高分子化合物
の水溶液を調製することができる。The water-soluble composition of the present invention is composed of fine particles of a water-soluble polymer compound, an alkali hydrogen carbonate, and a solid acid, and when added to water, the alkali hydrogen carbonate and solid acid react to generate anhydrous carbon dioxide gas, and the water-soluble composition It has the effect of preventing contact between the polymer compound particles and promoting dispersion in water. Therefore, an aqueous solution of the desired polymer compound can be prepared in a very short time without producing any lumps.
以下に実施例及び比較例をあげて本発明をさらに具体的
に説明する。EXAMPLES The present invention will be explained in more detail below with reference to Examples and Comparative Examples.
なお、以下の各側における水溶性高分子化合物のｉｔ千
均分子墓は極限粘度法によりて測定したものである。The 1,000-uniform molecular weight of the water-soluble polymer compound on each side below was measured by the limiting viscosity method.
実施例１
重量平均分子量約９００万のポリアクリルアミドの１４
９μｍ以下の粉末８０．９に、炭酸水素ナトリウムの１
４９μｍ以下の粉末２０ｇを加えて、充分混合したもの
と、同じポリアクリルアミド粉末８０Ｉｉに、コハク酸
の１４９μｍ以下の粉末２０．９を加えて充分混合した
ものを混ぜ合せて水溶性組成物を得た。Example 1 14 of polyacrylamide with a weight average molecular weight of about 9 million
1 of sodium bicarbonate to 80.9 of powder of 9 μm or less
A water-soluble composition was obtained by adding and thoroughly mixing 20 g of powder of 49 μm or less and adding and thoroughly mixing 20.9 of succinic acid powder of 149 μm or less to the same polyacrylamide powder 80Ii. .
ゆるやかに攪拌している２５℃の水１０Ｊ３の中へ、上
記の水溶性組成物１０Ｆを投入したところ、直ちに発泡
して、ポリアクリルアミドの粒子は「ママコ」をつくる
ことなく水中に分散し、３〜４分間で粘稠な二酸化炭素
の微気泡を含む均一な水浴液を得た。When the above-mentioned water-soluble composition 10F was poured into gently stirring water 10J3 at 25°C, it immediately foamed, and the polyacrylamide particles were dispersed in the water without forming "mako". A homogeneous water bath solution containing microbubbles of viscous carbon dioxide was obtained in ~4 minutes.
比較例１
実施列１における炭酸水素ナトリウムとコハク酸の双方
を使用しないポリアクリルアミドを用いて、実施例１と
同様に、８Ｉを水中に投入して俗解しようとしたが、「
ママコ」を生じ、均一溶液を得るのに、強い攪拌で４時
間を要した。Comparative Example 1 Using polyacrylamide in which neither sodium hydrogen carbonate nor succinic acid was used in Example 1, an attempt was made to put 8I into water in the same manner as in Example 1, but
It took 4 hours with strong stirring to obtain a homogeneous solution.
実施例２〜９および比較例２
ｗ、１表に示す１蛍平均分子量９００万〜１１００万の
水溶性高分子化合物、炭酸水素アルカリ及び固形酸の種
類をかえて実施例１に準じて水溶性組成物を製造し、溶
解試験を行なった。Examples 2 to 9 and Comparative Example 2 w, Water-soluble polymer compounds having an average molecular weight of 9 million to 11 million shown in Table 1, water-soluble polymer compounds according to Example 1, changing the types of alkali hydrogen carbonate and solid acid Compositions were prepared and dissolution tests were conducted.
その結果を第１表に示す。なお、炭酸水素アルカリ、固
形酸の粒度はすべて１４９μｍ以下である。The results are shown in Table 1. Note that the particle sizes of the alkali hydrogen carbonate and solid acid are all 149 μm or less.
（３）発明の効果
本発明の水溶性組成物は、それ自体常温で十分な流動性
のある粉末であり、極めて小型の装置を用いて短時間に
水に溶解することができ、水中でママコを生ずることが
なく、かつ不溶等分を生成しないので、廃水処理におけ
る高分子凝集剤水溶液、繊維工業におけろ糊剤水溶液及
び土木工事における高分子系掘削安定液等に利用するこ
とができ、工業的に有用である。(3) Effects of the Invention The water-soluble composition of the present invention is a powder with sufficient fluidity at room temperature, and can be dissolved in water in a short time using an extremely small device. Since it does not cause any oxidation and does not produce insoluble fractions, it can be used as an aqueous polymer flocculant solution in wastewater treatment, an aqueous filter paste solution in the textile industry, and a polymer excavation stabilizer in civil engineering work. Industrially useful.
Claims (1)
水の存在下でこれと反応して二酸化炭素を生成せしめる
固形酸を配合してなる水溶性組成物。1. A water-soluble composition prepared by blending a water-soluble polymer compound powder with a solid acid that reacts with alkali bicarbonate and water to generate carbon dioxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12369285A JPS61281155A (en) | 1985-06-07 | 1985-06-07 | Water-soluble composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12369285A JPS61281155A (en) | 1985-06-07 | 1985-06-07 | Water-soluble composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61281155A true JPS61281155A (en) | 1986-12-11 |
Family
ID=14866961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12369285A Pending JPS61281155A (en) | 1985-06-07 | 1985-06-07 | Water-soluble composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61281155A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS644229A (en) * | 1987-06-24 | 1989-01-09 | Dai Ichi Kogyo Seiyaku Co Ltd | Dispersant of stabilization liquid |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5361636A (en) * | 1976-11-16 | 1978-06-02 | Kurita Water Ind Ltd | Water-soluble high polymer compositions |
-
1985
- 1985-06-07 JP JP12369285A patent/JPS61281155A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5361636A (en) * | 1976-11-16 | 1978-06-02 | Kurita Water Ind Ltd | Water-soluble high polymer compositions |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS644229A (en) * | 1987-06-24 | 1989-01-09 | Dai Ichi Kogyo Seiyaku Co Ltd | Dispersant of stabilization liquid |
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