JPS6150014B2 - - Google Patents
Info
- Publication number
- JPS6150014B2 JPS6150014B2 JP53005929A JP592978A JPS6150014B2 JP S6150014 B2 JPS6150014 B2 JP S6150014B2 JP 53005929 A JP53005929 A JP 53005929A JP 592978 A JP592978 A JP 592978A JP S6150014 B2 JPS6150014 B2 JP S6150014B2
- Authority
- JP
- Japan
- Prior art keywords
- alkali
- water
- acrylic acid
- product
- acrylamide
- 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.)
- Expired
Links
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- 239000003513 alkali Substances 0.000 claims description 15
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 229920000642 polymer Polymers 0.000 claims description 8
- CNCOEDDPFOAUMB-UHFFFAOYSA-N N-Methylolacrylamide Chemical compound OCNC(=O)C=C CNCOEDDPFOAUMB-UHFFFAOYSA-N 0.000 claims description 6
- 230000008961 swelling Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000006386 neutralization reaction Methods 0.000 claims description 4
- 230000003472 neutralizing effect Effects 0.000 claims description 4
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims 4
- 238000010298 pulverizing process Methods 0.000 claims 2
- 230000000379 polymerizing effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000007788 liquid Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 239000003205 fragrance Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000000976 ink Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- VCUFZILGIRCDQQ-KRWDZBQOSA-N N-[[(5S)-2-oxo-3-(2-oxo-3H-1,3-benzoxazol-6-yl)-1,3-oxazolidin-5-yl]methyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical group O=C1O[C@H](CN1C1=CC2=C(NC(O2)=O)C=C1)CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F VCUFZILGIRCDQQ-KRWDZBQOSA-N 0.000 description 1
- -1 N-monosubstituted acrylamides Chemical class 0.000 description 1
- 150000003926 acrylamides Chemical class 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000011345 viscous material Substances 0.000 description 1
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Cultivation Of Plants (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Description
【発明の詳細な説明】
本発明は、育苗その他の植物栽培床の保水剤
（給水剤）、香料、インクその他各種液状物質の含
浸用担体等、多方面にわたり利用する事のできる
膨潤性保水剤及びその製造方法を提供せんとする
ものであつて、以下その実施例を説明する。Detailed Description of the Invention The present invention is a swellable water-retaining agent that can be used in a wide range of applications, such as a water-retaining agent for seedlings and other plant cultivation beds, a carrier for impregnating fragrances, inks, and various other liquid substances. The present invention aims to provide a method for manufacturing the same, and examples thereof will be described below.
実施例 １
アクリル酸………10重量部、Ｎ−メチロールア
クリルアミド………５重量部を、加熱溶解（他の
適当な溶媒を併用しても良い）し、触媒を添加し
て100℃前後において重合させた。この重合物を
粉砕し、アルカリで中和させた。Example 1 10 parts by weight of acrylic acid and 5 parts by weight of N-methylol acrylamide were dissolved by heating (other suitable solvents may also be used together), a catalyst was added, and the mixture was heated at around 100°C. Polymerized. This polymer was ground and neutralized with alkali.
実施例 ２
実施例１と同一の処方を加熱溶解し、アルカリ
で中和した後触媒を添加して100℃前後において
重合させ、重合物を粉砕した。Example 2 The same formulation as in Example 1 was heated and dissolved, neutralized with an alkali, a catalyst was added, polymerized at around 100°C, and the polymer was pulverized.
以上のように製造した粉粒状保水剤に水を加え
ると、何れの実施例のものも水に溶解する部分を
生じる事なく、数分で吸水膨潤してゼリー状物質
となり、その膨潤率は体積比にして200倍程度と
非常に高く、特に中和処理を重合後に行なつた実
施例１のものが実施例２のものよりも１割程度高
い膨潤率を示した。 When water is added to the powdery water-retaining agent produced as described above, all of the examples absorb water and swell into a jelly-like substance within a few minutes without producing any part that dissolves in water. In particular, the swelling ratio of Example 1, in which the neutralization treatment was performed after polymerization, was about 10% higher than that of Example 2.
Ｎ−メチロールアクリルアミドの添加量は、そ
の量が少なくなると吸水膨潤状態での粘度が低下
し軟らかくなり、多くなるとその逆になるので、
製品の使用目的に応じて量を決定すればよいが、
通常アクリル酸に対し、少なくとも20重量％を用
いると好結果が得られる。又、このＮ−メチロー
ルアクリルアミド以外のアクリルアミドＮ−モノ
置換体やＮ・Ｎ−ジメチルアクリルアミド等のア
クリルアミドＮ・Ｎ−ジ置換体等も使用する事が
できたが、Ｎ−メチロールアクリルアミドが特に
有効であつた。 Regarding the amount of N-methylol acrylamide added, if the amount is small, the viscosity in the water-absorbed and swollen state will decrease and it will become soft, and if it is large, the opposite will occur.
The amount can be determined depending on the intended use of the product, but
Good results are usually obtained using at least 20% by weight, based on acrylic acid. In addition, N-monosubstituted acrylamides other than this N-methylolacrylamide and N/N-disubstituted acrylamides such as N/N-dimethylacrylamide could also be used, but N-methylolacrylamide is particularly effective. It was hot.
さらに吸水膨潤してゼリー状物質となつた保水
剤は、乾燥状態におけば条件により数10分から数
時間で乾燥した元のゲル状物質に復元し、再加水
してもその膨潤性能は変らなかつた。 Furthermore, the water-retaining agent that has become a jelly-like substance by absorbing water and swelling will return to its original gel-like substance in several tens of minutes to several hours depending on the conditions if it is kept dry, and its swelling performance will not change even if it is rehydrated. Ta.
アルカリで中和する事が有効である事は、実施
例の記載から明らかである。特に重合物をアルカ
リで中和する方が重合前に中和するよりも一層効
果的であるが、その方法は種々考えられる。例え
ば粉砕した重合物に水を加え、アルカリを添加し
て中和させた後乾燥させる事ができるが、アルカ
リ又は適当な担体にアルカリを添加した粉粒状物
を粉砕した重合物と混合しておく方法、アルカリ
又はアルカリと適当な増量剤とから成る粘性物質
を粉砕した重合物と練り合せておく方法、含浸さ
せる水その他の液状物質にアルカリを添加してお
く方法等も可能である。 It is clear from the description of Examples that neutralization with alkali is effective. In particular, neutralizing the polymer with an alkali is more effective than neutralizing it before polymerization, but various methods can be considered. For example, it is possible to add water to the pulverized polymer, neutralize it by adding an alkali, and then dry it, but it is possible to mix the pulverized polymer with an alkali or a granular material prepared by adding an alkali to a suitable carrier. Other methods include a method in which a viscous substance consisting of an alkali or an alkali and a suitable filler is kneaded with a pulverized polymer, and a method in which an alkali is added to water or other liquid material to be impregnated.
本発明は以上の如く実施し得るものであり、か
かる本発明によれば、高い膨潤率、即ち高性能の
保水性能をもつ膨潤性保水剤が得られる。このよ
うな膨潤性保水剤は、従来、大量に必要なため経
済性の面で使用できなかつた育苗その他の植物栽
培床の保水剤（給水剤）として特に有効に活用で
きる。即ち粉粒状物とした本発明の保水剤を土壌
又はこれに代る栽培床材料に適量混合しておけ
ば、散水乃至給水された水や土中の水分が保水剤
に吸収され、保水剤が膨潤して長期にわたり所定
の領域で水分を貯える事になるため、散水乃至給
水回数を大巾に減少させ得ると共に植物栽培下能
と考えられていたような砂れき地における植物栽
培も可能ならしめ、さらに植物の生育も良好なら
しめ得るのである。このような用途に供する場合
には、本発明保水剤に肥料成分を加えておく事も
できる。 The present invention can be carried out as described above, and according to the present invention, a swellable water-retaining agent having a high swelling rate, that is, a high-performance water-retaining performance can be obtained. Such a swellable water-retaining agent can be particularly effectively used as a water-retaining agent (water supply agent) for raising seedlings and other plant cultivation beds, which conventionally could not be used economically due to the large amount required. That is, if an appropriate amount of the water retention agent of the present invention in the form of powder or granules is mixed with soil or an alternative cultivation bed material, the water that is sprinkled or supplied and the moisture in the soil will be absorbed by the water retention agent. Because it swells and stores moisture in a predetermined area for a long period of time, it is possible to greatly reduce the number of times watering or watering is required, and it also makes it possible to grow plants on sandy soil, which was previously thought to be inefficient for plant cultivation. Furthermore, the growth of plants can also be improved. When used for such purposes, a fertilizer component may be added to the water retention agent of the present invention.
勿論、本発明の保水剤は、上記とは異なる目的
のために水分を永く保留して湿潤性を保たなけれ
ばならないような部所又は物において、含水用担
体として用いる事もできるし、香料、液肥、液状
接着剤、インク、その他水以外の液状物の含浸用
担体としても非常に有効に使用できる。 Of course, the water retention agent of the present invention can also be used as a moisture carrier in areas or objects where moisture must be retained for a long time to maintain wetness for purposes other than those mentioned above, and it can also be used as a moisture carrier for fragrances. It can also be very effectively used as a carrier for impregnating liquid fertilizers, liquid adhesives, inks, and other liquids other than water.
そして本発明による製造方法は、本発明の保水
剤を合理的且つ経済的に製造するのに有効な方法
であり、当該保水剤の実用化を容易ならしめ得
る。 The production method according to the present invention is an effective method for producing the water retention agent of the present invention rationally and economically, and can facilitate the practical use of the water retention agent.
Claims (1)
くとも20重量％のアクリル酸と共重合して架橋或
いはゲル状物となるアクリルアミドＮ−モノ置換
体若しくはアクリルアミドＮ・Ｎ−ジ置換体とを
共重合させて成る膨潤性保水剤。 ２ アクリル酸とＮ−メチロールアクリルアミド
とを共重合させて成る第１項記載の保水剤。 ３ アルカリで中和し、又は中和のためのアルカ
リを添加して成る第１項又は第２項記載の保水
剤。 ４ アクリル酸とこのアクリル酸に対し、少なく
とも20重量％のアクリル酸と共重合して架橋或い
はゲル状物となるアクリルアミドＮ−モノ置換体
若しくはアクリルアミドＮ・Ｎ−ジ置換体とを加
熱溶解重合させ、得られた重合物を粉砕すること
を特徴とする膨潤性保水剤の製造方法。 ５ 重合物を粉砕した後、アルカリで中和、又は
中和のためのアルカリを添加する事を特徴とする
第４項記載の方法。 ６ 重合前にアルカリで中和し、このあと重合さ
せる第４項記載の方法。 ７ アクリル酸とＮ−メチロールアクリルアミド
とを共重合させる第４項〜第６項の何れかに記載
の方法。[Scope of Claims] 1. Acrylic acid, and an acrylamide N-monosubstituted product or acrylamide N.N-disubstituted product that is copolymerized with at least 20% by weight of acrylic acid to form a crosslinked or gel-like product. A swelling water-retaining agent made by copolymerizing with the body. 2. The water retention agent according to item 1, which is obtained by copolymerizing acrylic acid and N-methylolacrylamide. 3. The water retention agent according to item 1 or 2, which is neutralized with an alkali or added with an alkali for neutralization. 4. Heat-dissolve and polymerize acrylic acid and an acrylamide N-monosubstituted product or acrylamide N/N-disubstituted product that is copolymerized with at least 20% by weight of acrylic acid to form a crosslinked or gel-like product. A method for producing a swellable water-retaining agent, which comprises pulverizing the obtained polymer. 5. The method according to item 4, which comprises pulverizing the polymer and then neutralizing it with an alkali, or adding an alkali for neutralization. 6. The method according to item 4, which comprises neutralizing with an alkali before polymerization and then polymerizing. 7. The method according to any one of Items 4 to 6, wherein acrylic acid and N-methylolacrylamide are copolymerized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP592978A JPS5499188A (en) | 1978-01-23 | 1978-01-23 | Swellable water retention agent and manufacture therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP592978A JPS5499188A (en) | 1978-01-23 | 1978-01-23 | Swellable water retention agent and manufacture therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5499188A JPS5499188A (en) | 1979-08-04 |
| JPS6150014B2 true JPS6150014B2 (en) | 1986-11-01 |
Family
ID=11624572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP592978A Granted JPS5499188A (en) | 1978-01-23 | 1978-01-23 | Swellable water retention agent and manufacture therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5499188A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4357271A (en) * | 1980-12-31 | 1982-11-02 | General Electric Company | Thermoplastic polycarbonate resins reinforced with silane treated fillers |
| JPS59192026A (en) * | 1983-04-14 | 1984-10-31 | 三井化学株式会社 | Artificial soil for hydroponic culture |
| JPH0674297B2 (en) * | 1984-05-28 | 1994-09-21 | 三井東圧化学株式会社 | Method of adjusting concentration of aqueous solution |
| JPS60250014A (en) * | 1984-05-28 | 1985-12-10 | Mitsui Toatsu Chem Inc | Resin for concentration |
| JPS62197146A (en) * | 1986-02-26 | 1987-08-31 | Nippon Shokubai Kagaku Kogyo Co Ltd | Composition regulated in hygroscopic reactivity |
| JPS6372339A (en) * | 1986-09-12 | 1988-04-02 | Toyo Kagaku Yakuhin Kk | Moisture absorbent |
-
1978
- 1978-01-23 JP JP592978A patent/JPS5499188A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5499188A (en) | 1979-08-04 |
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