JPH11335662A - Soil agglomerating agent - Google Patents
Soil agglomerating agentInfo
- Publication number
- JPH11335662A JPH11335662A JP10159994A JP15999498A JPH11335662A JP H11335662 A JPH11335662 A JP H11335662A JP 10159994 A JP10159994 A JP 10159994A JP 15999498 A JP15999498 A JP 15999498A JP H11335662 A JPH11335662 A JP H11335662A
- Authority
- JP
- Japan
- Prior art keywords
- polymer
- soil
- water
- acrylic acid
- meth
- 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
Landscapes
- Fertilizers (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は（メタ）アクリル酸
を含有する水溶性モノマーの重合体微細粒子の分散液か
ら成る非水溶性重合体微細粒子の分散液を、該重合体微
細粒子を溶解する必要なく水に希釈し、耕地の土壌に散
水混合したり、法面吹きつけ用の植物生育基盤に添加混
合後に吹きつけて使用する土壌の団粒化剤に関する。[0001] The present invention relates to a method for dissolving a dispersion of water-insoluble polymer fine particles comprising a dispersion of polymer fine particles of a water-soluble monomer containing (meth) acrylic acid. The present invention relates to a soil aggregating agent that is diluted with water and sprayed and mixed with soil on arable land, or is added to and mixed with a plant growth base for slope spraying and then sprayed.
【０００２】[0002]
【従来の技術】特開昭６０−１８５９００号公報には単
量体を溶解し生成重合体を溶解しない塩水溶液中で（メ
タ）アクリル酸・アクリルアミドの重合を行い重合体微
細粒子の分散液を得る方法が知られている。 特開昭６
０−１８５９００号公報に記載された高分子分散液中の
ポリマー粒子は数日の内にカード状に固まる欠点があ
る。 特開昭６２−２０５１１号公報には高分子電解質
の共存下、単量体を溶解し生成重合体を溶解しない塩水
溶液中で単量体を重合し水溶性高分子分散液をえる方法
が開示されている。 特開昭６２−２０５１１号公報に
記載された（メタ）アクリル酸塩・アクリルアミドの共
重合物分散液は水溶性であり水希釈により増粘し粘稠液
となり取り扱いが不便である。2. Description of the Related Art Japanese Unexamined Patent Publication (Kokai) No. 60-185900 discloses that a dispersion of polymer fine particles is obtained by polymerizing (meth) acrylic acid / acrylamide in a salt aqueous solution in which a monomer is dissolved and a formed polymer is not dissolved. How to get is known. JP 6
The polymer particles in the polymer dispersion described in Japanese Patent Publication No. 0-185900 have a drawback of hardening into a card within a few days. JP-A-62-20511 discloses a method for obtaining a water-soluble polymer dispersion by polymerizing a monomer in a salt aqueous solution in which a monomer is dissolved and a formed polymer is not dissolved in the presence of a polymer electrolyte. Have been. The dispersion of the copolymer of (meth) acrylate and acrylamide described in JP-A-62-20511 is water-soluble and thickens upon dilution with water to become a viscous liquid, which is inconvenient to handle.
【０００３】[0003]
【発明が解決しようとする課題】容易に取り扱える水希
釈液を形成する（メタ）アクリル酸・アクリルアミド重
合体分散液から成る土壌団粒化剤を提供する。SUMMARY OF THE INVENTION The present invention provides a soil aggregating agent comprising a (meth) acrylic acid / acrylamide polymer dispersion which forms a water diluent which can be easily handled.
【０００４】[0004]
【課題を解決する為の手段】本発明者は（メタ）アクリ
ル酸を含有する単量体をカチオン性水溶性高分子の共存
下、該単量体を溶解し生成重合物を溶解しない水溶液中
で重合を行うことにより低粘性で作業性が良くかつ保存
安定性にすぐれる重合体微細粒子の分散液を製造できる
ことを発見し、且つ本発明の重合体微細粒子の分散液は
水希釈により容易に土壌と混合可能である事を発見し、
本発明を成すに至ったMeans for Solving the Problems The present inventors dissolve a monomer containing (meth) acrylic acid in an aqueous solution in which the monomer is dissolved and the resulting polymer is not dissolved in the presence of a cationic water-soluble polymer. It has been found that a dispersion of polymer fine particles having a low viscosity, good workability and excellent storage stability can be produced by performing polymerization with the polymer, and the dispersion of polymer fine particles of the present invention can be easily diluted with water. Discovered that it could be mixed with soil
Led to the present invention
【０００５】本発明の請求項１の発明は、（１）水溶液
中で（メタ）アクリル酸を含有する水溶性モノマーを、
該水溶液に可溶なポリマー電解質からなる分散性保持
剤共存下で重合を行うことにより得られたポリマー分散
液であり、（２）該ポリマー分散液中の（メタ）アクリ
ル酸（コ）ポリマーの濃度が５重量％以上であり、
（３）該ポリマー分散液中の（メタ）アクリル酸（コ）
ポリマー粒子の平均粒径が１〜１００μｍであり、
（４）該ポリマー分散液の粘度が製造直後および製造よ
り１ケ月後において３０〜１０００ＣＰであり、（５）
蒸留水で１０倍に希釈した状態の液を顕微鏡にて４００
倍に拡大して観察した場合においてポリマー粒子が観察
され、（６）該希釈液にアルカリを添加してＰＨを７．
０に調整した場合に該ポリマー粒子が溶解して水溶液と
成る性質を有するポリマー分散液から本質的に成る事を
特徴とする土壌団粒化剤である。The invention of claim 1 of the present invention is characterized in that (1) a water-soluble monomer containing (meth) acrylic acid in an aqueous solution,
A polymer dispersion obtained by performing polymerization in the presence of a dispersing agent comprising a polymer electrolyte soluble in the aqueous solution, and (2) a (meth) acrylic acid (co) polymer in the polymer dispersion. The concentration is 5% by weight or more,
(3) (meth) acrylic acid (co) in the polymer dispersion
The average particle size of the polymer particles is 1 to 100 μm,
(4) the viscosity of the polymer dispersion is 30 to 1000 CP immediately after production and one month after production, and (5)
The solution diluted 10 times with distilled water was observed under a microscope for 400 times.
Polymer particles were observed when observed at twice magnification. (6) PH was added to the diluent by adding an alkali to the diluent.
A soil aggregating agent characterized by being essentially composed of a polymer dispersion having the property that the polymer particles dissolve into an aqueous solution when adjusted to 0.
【０００６】本発明の請求項２の発明は、分散性保持剤
が、ジメチルジアリルアンモニウムクロリド（コ）ポリ
マーである事を特徴とする請求項１に記載の土壌団粒化
剤である。According to a second aspect of the present invention, there is provided the soil aggregating agent according to the first aspect, wherein the dispersing agent is a dimethyldiallylammonium chloride (co) polymer.
【０００７】本発明の請求項３の発明は、（メタ）アク
リル酸を含有する水溶性モノマーと分散性保持剤の重量
比が１００：１〜１０：１であることを特徴とする請求
項１ないし請求項２に記載の土壌団粒化剤である。According to a third aspect of the present invention, the weight ratio of the water-soluble monomer containing (meth) acrylic acid to the dispersing agent is 100: 1 to 10: 1. And a soil aggregating agent according to claim 2.
【０００８】本発明の請求項４の発明は、（メタ）アク
リル酸を含有する水溶性モノマーの組成がアクリル酸５
〜１００モル％アクリルアミド０〜９５モル％アクリロ
ニトリル０〜２０モル％を含有するモノマー組成である
ことを特徴とする請求項１ないし請求項３に記載の土壌
団粒化剤である。According to a fourth aspect of the present invention, the composition of the water-soluble monomer containing (meth) acrylic acid is
The soil aggregating agent according to any one of claims 1 to 3, wherein the monomer composition contains 0 to 100 mol% acrylamide 0 to 95 mol% acrylonitrile 0 to 20 mol%.
【０００９】本発明の請求項５の発明は、肥料成分を含
有する事を特徴とする請求項１ないし請求項４に記載の
土壌団粒化剤である。A fifth aspect of the present invention is the soil aggregating agent according to any one of the first to fourth aspects, further comprising a fertilizer component.
【００１０】本発明の請求項６の発明は、水希釈液を農
場等の耕地に散水する事を特徴とする請求項１ないし請
求項５に記載の土壌団粒化剤である。[0010] The invention of claim 6 of the present invention is the soil aggregating agent according to any one of claims 1 to 5, wherein the water diluent is sprayed on arable land such as a farm.
【００１１】本発明の請求項７の発明は、法面吹きつけ
用の植物生育基盤に添加する事を特徴とする請求項１な
いし請求項５に記載の土壌団粒化剤である。The invention according to claim 7 of the present invention is the soil aggregating agent according to any one of claims 1 to 5, which is added to a plant growth base for spraying a slope.
【００１２】本発明の請求項８の発明は、土壌に混練し
造粒する事を特徴とする請求項１ないし請求項５に記載
の土壌団粒化剤である。[0012] The invention of claim 8 of the present invention is the soil aggregating agent according to any one of claims 1 to 5, characterized in that it is kneaded with the soil and granulated.
【００１３】本発明の請求項９の発明は、土壌と混合後
のＰＨにおいて水溶性と成る事を特徴とする請求項１な
いし請求項８に記載の土壌団粒化剤。The invention according to claim 9 of the present invention is the soil aggregating agent according to any one of claims 1 to 8, characterized in that it becomes water-soluble at pH after mixing with soil.
【００１４】[0014]
【発明の実施態様】本発明の限定の第一は、（１）水溶
液中で（メタ）アクリル酸を含有する水溶性モノマー
を、 該水溶液に可溶なポリマー電解質からなる分散性
保持剤共存下で重合を行うことにより得られたポリマー
分散液であり、（２）該ポリマー分散液中の（メタ）ア
クリル酸（コ）ポリマーの濃度が５重量％以上であり、
（３）該ポリマー分散液中の（メタ）アクリル酸（コ）
ポリマー粒子の平均粒径が１〜１００μｍであり、
（４）該ポリマー分散液の粘度が製造直後および製造よ
り１ケ月後において３０〜１０００ＣＰであり、（５）
蒸留水で１０倍に希釈した状態の液を顕微鏡にて４００
倍に拡大して観察した場合においてポリマー粒子が観察
され、（６）該希釈液にアルカリを添加してＰＨを７．
０に調整した場合に該ポリマー粒子が溶解して水溶液と
成る性質を有するポリマー分散液から本質的に成る事を
特徴とする土壌団粒化剤である。本発明の限定の第二
は、請求項１に記載の土壌団粒化剤において、分散性保
持剤が、ジメチルジアリルアンモニウムクロリド（コ）
ポリマーである事を特徴とする。本発明の限定の第三
は、請求項１ないし請求項２に記載の土壌団粒化剤にお
いて、（メタ）アクリル酸を含有する水溶性モノマーと
分散性保持剤の重量比が１００：１〜１０：１であるこ
とを特徴とする。本発明の限定の第四は、請求項１ない
し請求項３に記載の土壌団粒化剤において、（メタ）ア
クリル酸を含有する水溶性モノマーの組成がアクリル酸
５〜１００モル％アクリルアミド０〜９５モル％アクリ
ロニトリル０〜２０モル％を含有するモノマー組成であ
ることを特徴とする。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The first limitation of the present invention is that (1) a (meth) acrylic acid-containing water-soluble monomer is dissolved in an aqueous solution in the presence of a dispersing agent comprising a polymer electrolyte soluble in the aqueous solution. (2) the concentration of the (meth) acrylic acid (co) polymer in the polymer dispersion is 5% by weight or more,
(3) (meth) acrylic acid (co) in the polymer dispersion
The average particle size of the polymer particles is 1 to 100 μm,
(4) the viscosity of the polymer dispersion is 30 to 1000 CP immediately after production and one month after production, and (5)
The solution diluted 10 times with distilled water was observed under a microscope for 400 times.
Polymer particles were observed when observed at twice magnification. (6) PH was added to the diluent by adding an alkali to the diluent.
A soil aggregating agent characterized by being essentially composed of a polymer dispersion having the property that the polymer particles dissolve into an aqueous solution when adjusted to 0. The second limitation of the present invention is the soil aggregating agent according to claim 1, wherein the dispersing agent is dimethyldiallylammonium chloride (co).
It is characterized by being a polymer. Thirdly, in the soil aggregating agent according to claim 1 or 2, the weight ratio of the water-soluble monomer containing (meth) acrylic acid to the dispersing agent is 100: 1 to 1. 10: 1. A fourth aspect of the present invention is the soil aggregating agent according to any one of claims 1 to 3, wherein the composition of the water-soluble monomer containing (meth) acrylic acid is 5 to 100 mol% of acrylamide of acrylic acid. It is a monomer composition containing 95 mol% of acrylonitrile 0 to 20 mol%.
【００１５】本発明に用いられる（メタ）アクリル酸を
含有する単量体としてはアクリル酸、メタクリル酸もし
くはこれらの混合物から成る酸を５〜１００モル％と、
アクリルアミド、アクリロニトリル、メチルメタクリレ
ート、ヒドロキシエチルアクリレート、ヒドロキシエチ
ルメタクリレート、ビニルメチルエーテル、ビニルアセ
テートおよびこれらの混合物の中から選ばれる一種のノ
ニオン性単量体０〜９５モル％の混合物が用いられる。
製品ＰＨにおいて重合体粒子に水溶性を付与しない範
囲においては、カチオン性モノマーも併用できる。本発
明に用いられる水溶液は、（メタ）アクリル酸を含有す
る単量体を溶解し生成重合体を溶解しない事を特徴と
し、ナトリウム、カリウム等のアルカリ金属塩あるいは
アンモニウム塩の塩化物、硫酸塩、硝酸塩等を含有する
と析出作用が強く成る。 本発明のポリマー分散液の安
定性が良い理由は、（メタ）アクリル酸（コ）ポリマー
粒子は殆ど電荷を持たず、該ポリマー粒子のまわりをカ
チオン性水溶性高分子が被覆し電気的反発を与える事に
よりカード化が防止できるものと推測する。As the monomer containing (meth) acrylic acid used in the present invention, 5 to 100 mol% of an acid composed of acrylic acid, methacrylic acid or a mixture thereof,
A mixture of 0 to 95 mol% of one kind of nonionic monomer selected from acrylamide, acrylonitrile, methyl methacrylate, hydroxyethyl acrylate, hydroxyethyl methacrylate, vinyl methyl ether, vinyl acetate and a mixture thereof is used.
As long as the polymer particles do not impart water solubility to the product PH, a cationic monomer can also be used in combination. The aqueous solution used in the present invention is characterized by dissolving the monomer containing (meth) acrylic acid and not dissolving the produced polymer, and chlorides and sulfates of alkali metal salts such as sodium and potassium or ammonium salts. , Nitrate, etc., enhance the precipitation action. The reason that the stability of the polymer dispersion of the present invention is good is that (meth) acrylic acid (co) polymer particles have almost no charge, and a cationic water-soluble polymer coats around the polymer particles to generate electric repulsion. It is presumed that carding can be prevented by giving.
【００１６】本発明の限定の第五は、請求項１ないし請
求項４に記載の土壌団粒化剤において、肥料成分を含有
する事を特徴とする。本発明の限定の第六は、請求項１
ないし請求項５に記載の土壌団粒化剤において、水希釈
液を農場等の耕地に散水する事を特徴とする。本発明の
限定の第七は、請求項１ないし請求項５に記載の土壌団
粒化剤において、法面吹きつけ用の植物生育基盤に添加
する事を特徴とする。本発明の限定の第八は、請求項１
ないし請求項５に記載の土壌団粒化剤において、土壌に
混練し造粒する事を特徴とする。本発明の限定の第九
は、請求項１ないし請求項８に記載の土壌団粒化剤にお
いて、土壌と混合後のＰＨにおいて水溶性と成る事を特
徴とする。According to a fifth aspect of the present invention, there is provided the soil aggregating agent according to any one of claims 1 to 4, characterized in that it contains a fertilizer component. A sixth limitation of the present invention is claim 1
In the soil aggregating agent according to the fifth aspect, the water diluent is sprayed on arable land such as a farm. A seventh aspect of the present invention is characterized in that the soil aggregating agent according to claims 1 to 5 is added to a plant growth base for spraying a slope. Eighth of the limitation of the present invention is claim 1
The soil aggregating agent according to claim 5 is characterized in that it is kneaded with the soil and granulated. A ninth aspect of the present invention is the soil aggregating agent according to any one of claims 1 to 8, wherein the soil aggregating agent is water-soluble at PH after mixing with the soil.
【００１７】[0017]
【作用】本発明の土壌団粒化剤が効果を発揮する原理
は、従来公知の水溶性のアクリル系土壌団粒化剤と同様
に土粒子の架橋吸着作用による。 即ち土壌と混合後の
ＰＨにおいて水溶性と成る性質が有る。 しかも使用時
には低ＰＨであるためカルボキシル基は解離せず非水溶
性であり、本発明の分散液は散水等に容易な低粘性の水
希釈液として使用する事ができる。The principle on which the soil aggregating agent of the present invention exerts its effect is based on the cross-linking and adsorbing effect of the soil particles, similarly to the conventionally known water-soluble acrylic soil aggregating agent. That is, it has a property of being water-soluble at PH after mixing with soil. In addition, the carboxyl group does not dissociate and is insoluble in water because it has a low pH at the time of use, and the dispersion of the present invention can be used as a low-viscosity water diluent that is easy to spray water.
【００１８】[0018]
【実施例】次に実施例によって、本発明を具体的に説明
するが、本発明はその要旨を超えない限り、以下の実施
例に制約されるものではない。EXAMPLES Next, the present invention will be described in detail with reference to examples, but the present invention is not limited to the following examples unless it exceeds the gist.
【００１９】（合成例−１）攪拌機、窒素曝気管および
温度制御装置を備えた反応槽に２０重量％硫酸アンモニ
ウム水溶液７９部を採り、アクリル酸１５モル％アクリ
ルアミド７５モル％アクリロニトリル１０モル％の組成
のモノマー２０部および分散剤としてポリジメチルジア
リルアンモニウムクロリド１部（シーピーエス社製商品
名エージフロックーＷＴ４０ＨＶ）を溶解した後、２，
２’−アゾビス（２−アミジノプロパン）塩酸塩を重合
開始剤として添加し、攪拌下、５３°Ｃで１０時間重合
し、塩水溶液に分散した粒径１０〜２０μｍの微粒子の
重合体分散液（ＰＨ３）が得られた。 この液を試料ー
１と呼ぶ。 該高分子分散液の粘度は５００ｍＰａ・ｓ
以下であり、上記分散液は脱イオン水で２０倍に希釈し
ても顕微鏡にて微粒子が観察され本質的に非水溶性であ
ることが確認された。 該分散液を炭酸ソーダを加えた
水に混合しＰＨ７にすると溶解し、該水溶液をもとに極
限粘度より分子量を求めた。(Synthesis Example 1) A reaction vessel equipped with a stirrer, a nitrogen aeration tube and a temperature controller was charged with 79 parts of a 20% by weight aqueous ammonium sulfate solution, and a composition of 15 mol% of acrylic acid, 75 mol% of acrylamide and 10 mol% of acrylonitrile was prepared. After dissolving 20 parts of the monomer and 1 part of polydimethyldiallylammonium chloride as a dispersant (Agefloc WT40HV manufactured by CPS Corporation), 2,
2′-azobis (2-amidinopropane) hydrochloride was added as a polymerization initiator, polymerized under stirring at 53 ° C. for 10 hours, and dispersed in a salt aqueous solution to obtain a polymer dispersion of fine particles having a particle size of 10 to 20 μm ( PH3) was obtained. This liquid is referred to as sample-1. The viscosity of the polymer dispersion is 500 mPa · s
Microparticles were observed under a microscope even when the dispersion was diluted 20 times with deionized water, and it was confirmed that the dispersion was essentially water-insoluble. The dispersion was mixed with water to which sodium carbonate was added and dissolved when the pH was adjusted to pH 7, and the molecular weight was determined from the intrinsic viscosity based on the aqueous solution.
【００２０】（合成例−２）アクリル酸１５モル％アク
リルアミド７０モル％アクリロニトリル１５モル％の組
成のモノマーを用いた以外は合成例−１と同様の操作を
行い非水溶性高分子分散液から成る試料−２を得た。(Synthesis Example 2) A water-insoluble polymer dispersion was prepared by performing the same operation as in Synthesis Example 1 except that a monomer having a composition of 15 mol% of acrylic acid, 70 mol% of acrylamide, and 15 mol% of acrylonitrile was used. Sample-2 was obtained.
【００２１】（合成例−３）アクリル酸３０モル％アク
リルアミド６０モル％アクリロニトリル１０モル％のモ
ノマーを用いた以外は合成例−１と同様の操作を行い非
水溶性高分子分散液から成る試料−３を得た。(Synthesis Example 3) A sample made of a water-insoluble polymer dispersion by performing the same operation as in Synthesis Example 1 except that a monomer of 30 mol% of acrylic acid, 60 mol% of acrylamide and 10 mol% of acrylonitrile was used. 3 was obtained.
【００２２】（合成例−４）アクリル酸１０モル％アク
リルアミド７０モル％アクリロニトリル２０モル％のモ
ノマーを用いた以外は合成例−１と同様の操作を行い非
水溶性高分子分散液から成る試料−４を得た。以上試料
ー１〜試料ー４のポリマー特性を表１に示す。(Synthesis Example-4) A sample comprising a water-insoluble polymer dispersion by performing the same operation as in Synthesis Example-1 except that a monomer of 10 mol% of acrylic acid, 70 mol% of acrylamide, and 20 mol% of acrylonitrile was used. 4 was obtained. Table 1 shows the polymer characteristics of Sample-1 to Sample-4.
【００２３】[0023]
【表１】[Table 1]
【００２４】[0024]
【効果試験１】土壌団粒化剤分散液５００ｇを水５０リ
ットルに希釈して得た分散液を、粘土２０重量％，シル
ト４０重量％，微砂４０重量％の組成の畑土３００Ｋｇ
に散布し混合造粒した。 １ケ月経過後、この造粒土を
ふるって粒径１ｍｍ以上のものの割合を造粒率で表し
た。 結果を表ー２に示す。[Effectiveness test 1] A dispersion obtained by diluting 500 g of the soil aggregating agent dispersion into 50 liters of water is applied to 300 kg of field soil having a composition of 20% by weight of clay, 40% by weight of silt, and 40% by weight of fine sand.
And mixed and granulated. After one month, this granulated soil was sieved, and the ratio of particles having a particle size of 1 mm or more was expressed as a granulation ratio. The results are shown in Table-2.
【００２５】[0025]
【表ー２】 [Table-2]
【００２６】[0026]
【効果試験２】土壌団粒化剤分散液をポリマー濃度１％
と成る様に水に希釈して得た分散液を、粘土質山土９４
容量部、バーク堆肥６容量部、水４０容量部のスラリー
にポリマー添加量１００ｐｐｍと成る様に混合し法面に
吹きつけた。吹きつけ土を採取し、温度２５°湿度６５
％の恒温恒湿室に放置し、その重量の経時変化を追跡し
た結果を表ー３に示す。[Effect test 2] Disperse the soil aggregating agent in a polymer concentration of 1%
The resulting dispersion was diluted with water so that
A slurry of 6 parts by volume, 6 parts by volume of bark compost, and 40 parts by volume of water were mixed so as to have a polymer addition amount of 100 ppm and sprayed on the slope. Collect the sprayed soil, temperature 25 ° humidity 65
% Was kept in a constant temperature / humidity chamber, and the result of tracking the change over time of the weight is shown in Table-3.
【００２７】[0027]
【表ー３】 [Table-3]
【００２８】[0028]
【効果試験３】粘土１０重量％，シルト４０重量％，微
砂５０重量％の組成の土３００Ｋｇに化成肥料と共に水
７５リットルを加えてパン型コンクリートミキサーで混
練し壁土状に均一混合した。 この含水土に土壌団粒化
剤分散液３７５ｇを添加し、混練することにより造粒し
た。 この造粒土をロータリー乾燥キルンで乾燥したも
のをふるって粒径１ｍｍ以上のものの割合を造粒率で表
した。 結果を表ー４に示す。 全ての試料において未
溶解あるいは不溶解ポリマーは発生しなかった。[Effect test 3] 75 liters of water was added to 300 kg of soil having a composition of 10% by weight of clay, 40% by weight of silt, and 50% by weight of fine sand together with a chemical fertilizer together with a fertilizer, and the mixture was kneaded with a pan-type concrete mixer and uniformly mixed into wall soil. 375 g of the soil aggregating agent dispersion was added to the hydrous soil and kneaded to granulate. The granulated soil was dried with a rotary drying kiln and sieved, and the ratio of particles having a particle size of 1 mm or more was expressed as a granulation ratio. The results are shown in Table-4. No undissolved or insoluble polymer was generated in all samples.
【００２９】[0029]
【表ー４】 [Table-4]
【発明の効果】本発明を使用すると低粘性のポリマー水
希釈液が得られ、簡易な添加装置により保水性を持つ造
粒土が安価に得られる。According to the present invention, a low-viscosity polymer water diluent can be obtained, and granulated soil having water retention can be obtained at a low cost by a simple addition apparatus.
【表−１】 [Table-1]
Claims (9)
を含有する水溶性モノマーを、該水溶液に可溶なポリマ
ー電解質からなる分散性保持剤共存下で重合を行うこと
により得られたポリマー分散液であり、（２）該ポリマ
ー分散液中の（メタ）アクリル酸（コ）ポリマーの濃度
が５重量％以上であり、（３）該ポリマー分散液中の
（メタ）アクリル酸（コ）ポリマー粒子の平均粒径が１
〜１００μｍであり、（４）該ポリマー分散液の粘度が
製造直後および製造より１ケ月後において３０〜１００
０ＣＰであり、（５）蒸留水で１０倍に希釈した状態の
液を顕微鏡にて４００倍に拡大して観察した場合におい
てポリマー粒子が観察され、（６）該希釈液にアルカリ
を添加してＰＨを７．０に調整した場合に該ポリマー粒
子が溶解して水溶液と成る性質を有するポリマー分散液
から本質的に成る事を特徴とする土壌団粒化剤。(1) It is obtained by polymerizing a water-soluble monomer containing (meth) acrylic acid in an aqueous solution in the presence of a dispersing agent comprising a polymer electrolyte soluble in the aqueous solution. (2) the concentration of the (meth) acrylic acid (co) polymer in the polymer dispersion is 5% by weight or more; and (3) the (meth) acrylic acid (co) in the polymer dispersion. ) The average particle size of the polymer particles is 1
(4) The viscosity of the polymer dispersion is 30 to 100 immediately after production and one month after production.
0CP, (5) polymer particles are observed when the liquid diluted 10 times with distilled water is observed 400 times with a microscope, and (6) alkali is added to the diluted liquid. A soil aggregating agent comprising essentially a polymer dispersion having the property of dissolving the polymer particles to form an aqueous solution when the pH is adjusted to 7.0.
モニウムクロリド（コ）ポリマーである事を特徴とする
請求項１に記載の土壌団粒化剤。2. The soil aggregating agent according to claim 1, wherein the dispersing agent is dimethyldiallylammonium chloride (co) polymer.
ノマーと分散性保持剤の重量比が１００：１〜１０：１
であることを特徴とする請求項１ないし請求項２に記載
の土壌団粒化剤。3. The weight ratio of the water-soluble monomer containing (meth) acrylic acid to the dispersing agent is 100: 1 to 10: 1.
The soil aggregating agent according to claim 1, wherein:
ノマーの組成がアクリル酸５〜１００モル％アクリルア
ミド０〜９５モル％アクリロニトリル０〜２０モル％を
含有するモノマー組成であることを特徴とする請求項１
ないし請求項３に記載の土壌団粒化剤。4. The composition of a water-soluble monomer containing (meth) acrylic acid is a monomer composition containing 5 to 100 mol% of acrylic acid 0 to 95 mol% of acrylonitrile 0 to 20 mol% of acrylonitrile. Claim 1
A soil aggregating agent according to claim 3.
項１ないし請求項４に記載の土壌団粒化剤。5. The soil aggregating agent according to claim 1, further comprising a fertilizer component.
特徴とする請求項１ないし請求項５に記載の土壌団粒化
剤。6. The soil aggregating agent according to claim 1, wherein the water diluent is sprayed on arable land such as a farm.
る事を特徴とする請求項１ないし請求項５に記載の土壌
団粒化剤。7. The soil aggregating agent according to claim 1, which is added to a plant growth base for spraying a slope.
求項１ないし請求項５に記載の土壌団粒化剤。8. The soil aggregating agent according to claim 1, wherein the agent is kneaded with the soil and granulated.
る事を特徴とする請求項１ないし請求項８に記載の土壌
団粒化剤。9. The soil aggregating agent according to claim 1, wherein the soil aggregating agent becomes water-soluble at pH after mixing with the soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10159994A JPH11335662A (en) | 1998-05-26 | 1998-05-26 | Soil agglomerating agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10159994A JPH11335662A (en) | 1998-05-26 | 1998-05-26 | Soil agglomerating agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11335662A true JPH11335662A (en) | 1999-12-07 |
Family
ID=15705688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10159994A Pending JPH11335662A (en) | 1998-05-26 | 1998-05-26 | Soil agglomerating agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11335662A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2874008A1 (en) * | 2004-08-06 | 2006-02-10 | Snf Sas Soc Par Actions Simpli | FERTILIZER PELLETS AND METHOD OF MANUFACTURE |
| WO2017214960A1 (en) * | 2016-06-17 | 2017-12-21 | 张铭强 | Micro-carbon biological fertilizer for rapidly increasing soil aggregate structure and preparation method |
-
1998
- 1998-05-26 JP JP10159994A patent/JPH11335662A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2874008A1 (en) * | 2004-08-06 | 2006-02-10 | Snf Sas Soc Par Actions Simpli | FERTILIZER PELLETS AND METHOD OF MANUFACTURE |
| WO2006021708A1 (en) * | 2004-08-06 | 2006-03-02 | Snf S.A.S. | Fertilizer granules and method for making same |
| US7931728B2 (en) | 2004-08-06 | 2011-04-26 | Snf S.A.S. | Fertilizer granules and manufacturing process |
| WO2017214960A1 (en) * | 2016-06-17 | 2017-12-21 | 张铭强 | Micro-carbon biological fertilizer for rapidly increasing soil aggregate structure and preparation method |
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