JPH0769770A - Composition for coating fertilizer, coated granular fertilizer and their production - Google Patents
Composition for coating fertilizer, coated granular fertilizer and their productionInfo
- Publication number
- JPH0769770A JPH0769770A JP5213192A JP21319293A JPH0769770A JP H0769770 A JPH0769770 A JP H0769770A JP 5213192 A JP5213192 A JP 5213192A JP 21319293 A JP21319293 A JP 21319293A JP H0769770 A JPH0769770 A JP H0769770A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- fertilizer
- coated
- wax
- rosin
- 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
【０００１】[0001]
【産業上の利用分野】本発明は粒状肥料の表面を耐水性
の樹脂で被覆することにより作物の必要適期に適量の養
分供給可能な被覆粒状肥料の被覆用組成物及びそれを被
覆した被覆粒状肥料及びその製造法に関する。FIELD OF THE INVENTION The present invention relates to a coating composition for coated granular fertilizer capable of supplying an appropriate amount of nutrients at a required time and in a crop by coating the surface of the granular fertilizer with a water-resistant resin, and a coated granular material coated with the same. Fertilizer and its manufacturing method.
【０００２】[0002]
【従来の技術とその解決しようとする課題】化学肥料は
一般に水溶性であり、そのため速効性である。しかし、
水溶性であるがため流亡、脱窒素等による成分損失（利
用率の低下）が大きく、長期にわたって肥効を持続させ
ることが困難である。又、施肥時の局部的な偏りにより
農作物に濃度障害を及ぼす恐れがある。BACKGROUND OF THE INVENTION Chemical fertilizers are generally water-soluble and therefore fast-acting. But,
Since it is water-soluble, loss of components due to runoff and denitrification (decrease in utilization rate) is large, and it is difficult to maintain fertilization effect for a long time. In addition, there is a risk that concentration unevenness may occur in agricultural crops due to local deviation during fertilization.
【０００３】農作物に濃度障害を及ぼさない施肥法の一
つとして被覆肥料の施用が挙げられる。被覆肥料とは粒
状肥料の表面を有機系あるいは無機系の被覆資材を用い
て被覆することにより内部の肥料成分の溶出を調節した
肥料である。なかでも成分調節機能の点で樹脂等を用い
た有機系の被覆資材が有効であり主流を占めている。Application of coated fertilizers is one of the fertilization methods that do not affect the concentration of agricultural products. The coated fertilizer is a fertilizer in which the elution of the fertilizer components inside is controlled by coating the surface of the granular fertilizer with an organic or inorganic coating material. Above all, organic coating materials using resins and the like are effective and occupy the mainstream in terms of the component adjusting function.
【０００４】これらの資材はいずれも肥料の溶出が完了
した後、その大部分の被覆材は土壌中で永年残留し生態
系環境に負荷を与える事になる。特に近年、環境にやさ
しい生態調和型農業の高まりの中では被覆肥料に使用さ
れる被覆材は肥効成分が溶出した後は極力速やかに土壌
中で分解されることが要求される。しかしながら、生分
解型として知られるアルキッド樹脂等を用いた有機系の
被覆資材による被覆肥料の製造には一般に有機溶剤を使
用するため、その毒性、引火性等に充分な注意及び対策
が必要である。特に近年環境問題の高まりとともに溶剤
の回収や環境汚染等が問題にされている。従って、かか
る問題を解決すべく、回収や環境汚染に問題のある有機
溶剤を用いることなく被覆粒状肥料を得ることができる
被覆材が検討されたが、樹脂が高粘度であるため成膜性
ならびに溶出制御という点で必ずしも満足できるもので
はなかった。After the elution of the fertilizer is completed for all of these materials, most of the coating materials remain in the soil for many years, which gives a load to the ecosystem environment. Particularly in recent years, with the rise of eco-friendly agriculture that is environmentally friendly, it is required that the coating material used for coated fertilizer be decomposed in the soil as quickly as possible after the fertilizing component is eluted. However, since organic solvents are generally used in the production of coated fertilizers using organic coating materials such as alkyd resins, which are known as biodegradable types, sufficient caution and countermeasures are required for their toxicity and flammability. . Particularly in recent years, as environmental problems have increased, solvent recovery and environmental pollution have become problems. Therefore, in order to solve such a problem, a coating material capable of obtaining a coated granular fertilizer without using an organic solvent having a problem of recovery and environmental pollution was studied, but since the resin has a high viscosity, film-forming property and It was not always satisfactory in terms of elution control.
【０００５】[0005]
【課題を解決するための手段】本発明者らはかかる問題
を解決すべく鋭意検討の結果、アルキッド樹脂とエステ
ルガム（耐水性や肥料との密着性の向上）の配合物及び
ボイル油（成膜性の改善）に、さらにワックス、石油樹
脂等を配合することにより成膜性にすぐれた耐水性のあ
る被覆材を見いだし本発明に到達した。Means for Solving the Problems As a result of intensive studies to solve such problems, the present inventors have found that a mixture of alkyd resin and ester gum (improving water resistance and adhesion to fertilizer) and boil oil (compound). The present invention has been accomplished by finding a water-resistant coating material having an excellent film-forming property by further blending wax, petroleum resin, etc. in addition to (improving film property).
【０００６】すなわち本発明は、油変性アルキッド樹
脂、分子中に共役二重結合を有する不飽和油、エステル
ガム及びボイル油と、ワックス、石油樹脂またはロジン
およびその誘導体の少なくとも一種以上からなる肥料被
覆用組成物、および粒状肥料の表面が主として油変性ア
ルキッド樹脂、分子中に共役二重結合を有する不飽和
油、エステルガム及びボイル油と、ワックス、石油樹脂
またはロジンおよびその誘導体の少なくとも一種以上か
らなる肥料被覆用組成物で被覆されてなることを特徴と
する被覆粒状肥料、または粒状肥料の表面が主として油
変性アルキッド樹脂、分子中に共役二重結合を有する不
飽和油、エステルガム及びボイル油からなる肥料被覆用
組成物で被覆され、さらにその外層をワックス、石油樹
脂またはロジンおよびその誘導体の少なくとも一種以上
からなる肥料被覆用組成物で被覆されてなることを特徴
とする被覆粒状肥料、または粒状肥料の表面が主として
ワックス、石油樹脂またはロジンおよびその誘導体の少
なくとも一種以上からなる肥料被覆用組成物で被覆さ
れ、その外層を油変性アルキッド樹脂、分子中に共役二
重結合を有する不飽和油、エステルガム及びボイル油か
らなる肥料被覆用組成物で被覆されてなることを特徴と
する被覆粒状肥料、または粒状肥料の表面が主として油
変性アルキッド樹脂、分子中に共役二重結合を有する不
飽和油、エステルガム及びボイル油からなる肥料被覆用
組成物で被覆され、さらにその外層を油変性アルキッド
樹脂、分子中に共役二重結合を有する不飽和油、エステ
ルガム及びボイル油と、ワックス、石油樹脂またはロジ
ンおよびその誘導体の少なくとも一種以上からなる肥料
被覆用組成物で被覆されてなることを特徴とする被覆粒
状肥料、または粒状肥料の表面が主として油変性アルキ
ッド樹脂、分子中に共役二重結合を有する不飽和油、エ
ステルガム及びボイル油と、ワックス、石油樹脂または
ロジンおよびその誘導体の少なくとも一種以上からなる
肥料被覆用組成物で被覆され、その外層を油変性アルキ
ッド樹脂、分子中に共役二重結合を有する不飽和油、エ
ステルガム及びボイル油からなる肥料被覆用組成物で被
覆されてなることを特徴とする被覆粒状肥料で、肥効調
節をワックス、石油樹脂またはロジンおよびその誘導体
の種類、添加量を変化させることにより溶出パターンを
制御することを特徴とする被覆粒状肥料の製造法を提供
するものである。That is, the present invention is a fertilizer coating comprising an oil-modified alkyd resin, unsaturated oil having a conjugated double bond in the molecule, ester gum and boil oil, and at least one of wax, petroleum resin or rosin and its derivatives. Composition, and the surface of the granular fertilizer is mainly oil-modified alkyd resin, unsaturated oil having a conjugated double bond in the molecule, ester gum and boil oil, and at least one or more of wax, petroleum resin or rosin and its derivatives. A coated granular fertilizer characterized by being coated with a fertilizer coating composition comprising the following, or the surface of the granular fertilizer is mainly an oil-modified alkyd resin, unsaturated oil having a conjugated double bond in the molecule, ester gum and boil oil Is coated with a fertilizer coating composition consisting of a wax, petroleum resin or rosin and Coated granular fertilizer characterized by being coated with a fertilizer coating composition consisting of at least one derivative thereof, or the surface of the granular fertilizer mainly consisting of wax, petroleum resin or rosin and at least one derivative thereof. It is coated with a coating composition, and its outer layer is coated with a fertilizer coating composition consisting of an oil-modified alkyd resin, an unsaturated oil having a conjugated double bond in the molecule, an ester gum and a boil oil. The coated granular fertilizer to be, or the surface of the granular fertilizer is mainly coated with an oil-modified alkyd resin, an unsaturated oil having a conjugated double bond in the molecule, a fertilizer coating composition consisting of ester gum and boiled oil, and further its outer layer. Oil-modified alkyd resin, unsaturated oil having conjugated double bond in the molecule, ester gum and boil oil, wax, petroleum tree Or coated granular fertilizer characterized by being coated with a fertilizer coating composition consisting of at least one or more of rosin and its derivatives, or the surface of the granular fertilizer is mainly oil-modified alkyd resin, conjugated double bonds in the molecule. Having an unsaturated oil, ester gum and boil oil, and a fertilizer coating composition comprising at least one of wax, petroleum resin or rosin and its derivatives, the outer layer of which is an oil-modified alkyd resin and a conjugated double in the molecule. Unsaturated oil having a bond, a coated granular fertilizer characterized by being coated with a fertilizer coating composition consisting of ester gum and boil oil, wax, petroleum resin or rosin and its derivative types for controlling fertilization effect, Also provided is a method for producing a coated granular fertilizer, which is characterized in that the elution pattern is controlled by changing the addition amount. Of.
【０００７】本発明において、用いる油変性アルキッド
樹脂とは無水フタル酸、無水マレイン酸の多塩基酸とペ
ンタエリスリトール、グリセリン等の多価アルコール及
び変性剤としての天然植物油または植物脂あるいは天然
動物脂と加熱縮合して得られる一般的なもので良く特に
その種類は限定されるものではない。In the present invention, the oil-modified alkyd resin used is a polybasic acid such as phthalic anhydride or maleic anhydride, a polyhydric alcohol such as pentaerythritol or glycerin, and a natural vegetable oil or vegetable fat or natural animal fat as a modifier. It may be a general one obtained by heat condensation, and its kind is not particularly limited.
【０００８】天然植物油または植物脂としては例えば、
大豆油、亜麻仁油、桐油、サーフラワー油、ヤシ油、パ
ーム油等が挙げられる。天然動物油としては例えば牛脂
が挙げられる。分子量は５００〜５０００の範囲のもの
が好ましい。分子量が５００未満の場合には不飽和油と
の反応により生成する被膜が脆くまた、硬化乾燥速度も
遅いため塗膜形成に長時間要する。一方、分子量が５０
００を越える場合には高粘度となり効率よく均一に被膜
を形成することが困難となる。Examples of the natural vegetable oil or vegetable fat include:
Soybean oil, linseed oil, tung oil, surfflower oil, coconut oil, palm oil and the like can be mentioned. Examples of natural animal oils include beef tallow. The molecular weight is preferably in the range of 500 to 5000. When the molecular weight is less than 500, the coating film formed by the reaction with the unsaturated oil becomes brittle and the curing and drying speed is slow, so that it takes a long time to form the coating film. On the other hand, the molecular weight is 50
If it exceeds 00, the viscosity becomes high, and it becomes difficult to form a film efficiently and uniformly.
【０００９】分子中に共役二重結合を有する不飽和油と
しては例えば桐油、脱水ヒマシ油等が挙げられる。桐油
は共役二重結合を持つエレオステアリン酸を主成分とし
ている。脱水ヒマシ油は共役二重結合を持つ９，１１リ
ノール酸を多く含む。これらの桐油、脱水ヒマシ油等を
そのままあるいは目的成分を精製して用いることもでき
る。Examples of the unsaturated oil having a conjugated double bond in the molecule include tung oil and dehydrated castor oil. Tung oil is mainly composed of eleostearic acid having a conjugated double bond. Dehydrated castor oil contains a large amount of 9,11 linoleic acid having a conjugated double bond. These tung oil, dehydrated castor oil and the like can be used as they are or after purifying the target components.
【００１０】これらの不飽和油はアルキッド樹脂を希釈
し粘度を下げる効果とともにそれ自体金属石鹸の存在
下、不飽和油同士またはアルキッド樹脂と架橋し樹脂化
（固形化）するものである。These unsaturated oils have the effect of diluting the alkyd resin and lowering the viscosity, and themselves crosslink the unsaturated oils or with the alkyd resin in the presence of a metallic soap to form a resin (solidify).
【００１１】以上の油変性アルキッド樹脂と不飽和油と
の混合割合としては通常重量比で２：８〜７：３の範囲
が好ましい。油変性アルキッド樹脂の割合がこの範囲よ
り少ない場合、精製した被膜が脆く耐水性が悪い。また
油変性アルキッド樹脂の割合がこの範囲より多い場合、
粘度が高すぎて効率よく被覆することが困難となる。The mixing ratio of the above oil-modified alkyd resin and unsaturated oil is usually preferably in the range of 2: 8 to 7: 3 by weight. If the proportion of the oil-modified alkyd resin is less than this range, the purified coating will be brittle and the water resistance will be poor. If the proportion of oil-modified alkyd resin is higher than this range,
The viscosity is too high, which makes it difficult to coat efficiently.
【００１２】金属石鹸類としては通常、マンガン、コバ
ルト、ジルコニウム、ニッケル、鉄、鉛等のナフテン酸
類またはオクチル酸類が使用できる。例えばオクチル酸
ジルコニウム、ナフテン酸マンガン、オクチル酸コバル
トの単独またはその混合物を使用することができ、その
量は油変性アルキッド樹脂と不飽和油の合計の０．５〜
３重量％の範囲が好ましい。これ以下では反応速度が十
分でなく、また、これ以上の場合は反応速度が速すぎ、
連続的成膜が困難である。As the metal soaps, naphthenic acids such as manganese, cobalt, zirconium, nickel, iron and lead or octylic acids can be usually used. For example, zirconium octylate, manganese naphthenate, cobalt octylate may be used alone or in a mixture thereof in an amount of 0.5 to 0.5 of the total amount of the oil-modified alkyd resin and the unsaturated oil.
A range of 3% by weight is preferred. Below this, the reaction rate is not sufficient, and above this, the reaction rate is too fast,
Continuous film formation is difficult.
【００１３】エステルガムとはガムロジン、ウッドロジ
ン、トール油ロジンとグリセリン、ポリグリセリン、グ
リセリンピッチを常圧下で加熱して得られるロジン酸グ
リセリンエステルである。ロジン酸グリセリンエステル
の添加量は油変性アルキッド樹脂と不飽和油との混合物
の合計の５〜２５重量％の範囲が好ましい。これ以下で
は期待した効果が得られない。またこれ以上の場合、粘
度が高すぎて均一被膜形成が困難となり、その結果、耐
水性不良となる。The ester gum is a rosin acid glycerin ester obtained by heating gum rosin, wood rosin, tall oil rosin and glycerin, polyglycerin, and glycerin pitch under normal pressure. The amount of glycerin rosinate added is preferably in the range of 5 to 25% by weight of the total mixture of the oil-modified alkyd resin and the unsaturated oil. Below this, the expected effect cannot be obtained. On the other hand, if it is more than this, the viscosity is too high to form a uniform film, resulting in poor water resistance.
【００１４】ボイル油とは乾性油を常圧下で加熱して適
度のコンシステンシーを与え、脱色し、乾燥剤を加えて
乾燥性を改良したものであり、乾性油としてはアマニ
油、エノ油、桐油、麻実油、大豆油、イワシ油が挙げら
れる。ボイル油の添加量は油変性アルキッド樹脂と不飽
和油及びエステルガムとの混合物の合計の１０〜４０重
量％の範囲が好ましい。これ以下では被膜の最低膜厚が
小さく成膜性に難があり、その結果、耐水性不良とな
る。またこれ以上の場合、硬化速度が遅くなり塗膜形成
に長時間を要する。Boiled oil is a dry oil which is heated under normal pressure to give an appropriate consistency, decolorized, and a desiccant is added to improve the drying property. As the dry oil, linseed oil, eno oil, Tung oil, hemp oil, soybean oil and sardine oil are mentioned. The amount of boiled oil added is preferably in the range of 10 to 40% by weight based on the total amount of the mixture of the oil-modified alkyd resin, the unsaturated oil and the ester gum. If it is less than this, the minimum film thickness of the coating is small and the film forming property is difficult, resulting in poor water resistance. On the other hand, if it is more than this, the curing speed becomes slow and it takes a long time to form a coating film.
【００１５】ワックスとしては軟化点が４０〜１５０℃
の範囲のもの、好ましくは軟化点が７０〜１１０℃の範
囲のものを用いる。軟化点が４０℃以下の場合は屋外貯
蔵時等においてワックスが融解し溶出性能を損ない、ま
た、固結を生起する恐れがある。また、軟化点が１５０
℃以上の場合は被膜形成時に熱収縮等により均厚性が阻
害され目的の溶出性能のものを得ることが困難となる。
ここで使用するワックスとしては特に限定されるもので
はなくカーボワックス、ヘキストロウの様な各種合成ワ
ックス、カーナバロウ、みつロウの様な各種天然ワック
スならびにワックスの性能を有する熱可塑性樹脂の様な
材料を使用することができる。ワックスの効果としては
油変性アルキッド樹脂と不飽和油及びエステルガム、ま
たはボイル油を含有せしめた固形化した反応生成物の分
子間の微細な間隔に侵入して膜の耐水性をより高くして
いることが挙げられる。The wax has a softening point of 40 to 150 ° C.
The range of 70 to 110 ° C. is preferably used. If the softening point is 40 ° C. or lower, the wax may be melted at the time of outdoor storage, impairing the elution performance, and may cause solidification. Also, the softening point is 150
If the temperature is higher than 0 ° C, the uniform thickness is impeded by heat shrinkage or the like during the formation of the coating, and it becomes difficult to obtain the one having the desired elution performance.
The wax used here is not particularly limited, and various synthetic waxes such as carbowaxes and hex-straws, various natural waxes such as carnauba wax and beeswax, and materials such as thermoplastic resins having wax performance are used. can do. The effect of the wax is to improve the water resistance of the film by penetrating into the fine gaps between the molecules of the solidified reaction product containing the oil-modified alkyd resin and unsaturated oil and ester gum, or boiled oil. Can be mentioned.
【００１６】次に石油樹脂ならびにロジン及びその誘導
体はワックス類と相溶しその耐水性、粘着性により外部
からの水の侵入を抑えワックスとの相乗効果が期待でき
るものである。石油樹脂としてはＣ５留分を主原料とし
た脂肪族系炭化水素樹脂及びＣ９留分を主成分とした芳
香族系炭化水素樹脂が挙げられるが、好ましくはワック
ス類との相溶性の高いＣ９が望ましい。また、Ｃ９系石
油樹脂の主成分はスチレン、ビニルトルエン、α−メチ
ルスチレン、インデンの共重合体であり使用する軟化点
は７０〜１５０℃、好ましくは９０〜１２０℃の範囲の
ものが望ましい。また、ロジンはガムロジン、ウッドロ
ジン何れでもよくまたこれらのロジンとアルコールを加
圧下加熱して得られるロジンエステル、ロジンを石灰や
亜鉛華で硬化させたロジン等の誘導体も使用することが
できる。Next, the petroleum resin and rosin and its derivatives are compatible with waxes, and their water resistance and tackiness prevent the entry of water from the outside and can be expected to have a synergistic effect with the wax. Examples of the petroleum resin include an aliphatic hydrocarbon resin containing a C5 fraction as a main raw material and an aromatic hydrocarbon resin containing a C9 fraction as a main component, and C9 having a high compatibility with waxes is preferable. desirable. The main component of the C9 petroleum resin is a copolymer of styrene, vinyltoluene, α-methylstyrene and indene, and the softening point used is 70 to 150 ° C, preferably 90 to 120 ° C. The rosin may be either gum rosin or wood rosin, and rosin ester obtained by heating these rosin and alcohol under pressure, and a derivative such as rosin obtained by curing rosin with lime or zinc white can also be used.
【００１７】一次被覆材としては油変性アルキッド樹
脂、分子中に共役二重結合を有する不飽和油、エステル
ガム及びボイル油と、ワックス類の配合物を熱溶融し被
覆するが、この場合の条件は比較的低融点のワックスや
石油樹脂等を使用する〔表面物性に問題があれば当資材
の外層にワックス及び石油樹脂を含まない被覆材で塗膜
形成することもできる〕。その配合組成はワックス類の
添加量が油変性アルキッド樹脂と不飽和油及びエステル
ガム、叉はボイル油を含有せしめた混合物の合計の２〜
３０重量％、好ましくは５〜２０重量％の範囲が望まし
い。この範囲よりも少量の場合は初期の溶出抑制困難で
これ以上では被覆時の膜の損耗が起こるし、外層に被覆
するアルキッド樹脂との接着性に支障をきたすことにな
る。As the primary coating material, an oil-modified alkyd resin, unsaturated oil having a conjugated double bond in the molecule, ester gum and boil oil, and a mixture of waxes are heat-melted and coated. Uses a wax or petroleum resin having a relatively low melting point [If there is a problem with the physical properties of the surface, a coating material containing neither wax nor petroleum resin can be formed on the outer layer of this material]. The compounding composition is such that the amount of waxes added is 2 to the total of a mixture containing oil-modified alkyd resin, unsaturated oil and ester gum, or boil oil.
A desirable range is 30% by weight, preferably 5 to 20% by weight. If the amount is less than this range, it is difficult to suppress the initial elution, and if the amount is more than this range, the film will be worn during coating, and the adhesion with the alkyd resin coating the outer layer will be impaired.
【００１８】次に、粒状肥料表面が主として油変性アル
キッド樹脂、分子中に共役二重結合を有する不飽和油、
エステルガム及びボイル油からなる組成物で被覆され、
さらにその外層をワックス類により被覆する場合にはワ
ックス類の添加量は被覆材の総量の２〜２０重量％、好
ましくは２〜１０重量％の範囲が望ましい。ワックス類
がこの範囲以下においては初期の溶出抑制困難で、これ
以上では被覆時の膜の損耗がおこるし、輸送時、施肥機
械散布時に損耗する。また、逆に内層にワックス類によ
り被覆する場合も同様の添加量が好ましい。Next, the surface of the granular fertilizer is mainly an oil-modified alkyd resin, an unsaturated oil having a conjugated double bond in the molecule,
Coated with a composition consisting of ester gum and boiled oil,
Further, when the outer layer is coated with waxes, the amount of waxes added is desirably in the range of 2 to 20% by weight, preferably 2 to 10% by weight, based on the total amount of the coating material. If the wax content is less than this range, it is difficult to suppress the initial elution, and if it exceeds this range, the film will be worn at the time of coating, and will be worn at the time of transportation and spraying of the fertilizer application machine. On the contrary, when the inner layer is coated with wax, the same addition amount is preferable.
【００１９】さらに、粒状肥料表面が主として油変性ア
ルキッド樹脂、分子中に共役二重結合を有する不飽和
油、エステルガム及びボイル油からなる組成物で被覆さ
れ、さらにその外層を油変性アルキッド樹脂、分子中に
共役二重結合を有する不飽和油とエステルガム又はボイ
ル油と、ワックス、石油樹脂またはロジン及びその誘導
体の少なくとも一種以上からなる肥料被覆用組成物を被
覆する被覆粒状肥料においてはワックス類の添加量は被
覆材の総量に対して２〜２５重量％、好ましくは２〜１
５重量％の範囲が望ましい。ワックス類がこの範囲以下
においては初期の溶出抑制困難で、これ以上では被覆時
の膜の損耗がおこるし、輸送時、施肥機械散布時に損耗
する。また、逆に内層に油変性アルキッド樹脂、分子中
に共役二重結合を有する不飽和油とエステルガム又はボ
イル油と、ワックス、石油樹脂またはロジン及びその誘
導体の少なくとも一種以上からなる肥料被覆用組成物を
被覆する被覆粒状肥料においても同様の添加量が好まし
い。Further, the surface of the granular fertilizer is mainly coated with a composition comprising an oil-modified alkyd resin, an unsaturated oil having a conjugated double bond in the molecule, an ester gum and a boil oil, and the outer layer thereof is further modified with an oil-modified alkyd resin. Unsaturated oils having a conjugated double bond in the molecule, ester gum or boil oil, and waxes in coated granular fertilizers coated with a fertilizer coating composition comprising at least one of wax, petroleum resin or rosin and its derivatives. Is added in an amount of 2 to 25% by weight, preferably 2-1.
A range of 5% by weight is desirable. If the wax content is less than this range, it is difficult to suppress the initial elution, and if it exceeds this range, the film will be worn at the time of coating, and will be worn at the time of transportation and spraying of the fertilizer application machine. On the contrary, an oil-modified alkyd resin in the inner layer, an unsaturated oil having a conjugated double bond in the molecule, an ester gum or boil oil, and a composition for fertilizer coating comprising at least one of wax, petroleum resin or rosin and its derivatives. The same addition amount is preferable in the coated granular fertilizer for coating the product.
【００２０】さらに、粒状肥料の表面を本発明の被覆用
組成物で被覆した被覆粒状肥料の肥効調節はワックス、
石油樹脂またはロジンおよびその誘導体の種類、添加量
を調節することにより溶出パターンを制御することがで
きる。Further, the effect of controlling the fertilizing effect of the coated granular fertilizer obtained by coating the surface of the granular fertilizer with the coating composition of the present invention is wax,
The elution pattern can be controlled by adjusting the type and amount of petroleum resin or rosin and its derivative.
【００２１】本発明において被覆される肥料は通常、使
用される塩安、尿素、塩化加里等の単肥やＮＫ化成、塩
加燐安、燐硝安加里等の複合肥料及び粒状の有機肥料
等、特に制限されるものではない。又、被覆方法は公知
の如く、流動層や回転ドラム等の転動型の各れでも良
い。The fertilizers to be coated in the present invention are usually used as simple fertilizers such as ammonium chloride, urea and potassium chloride, compound fertilizers such as NK chemical compound, ammonium chloride, ammonium phosphate and potassium, and organic fertilizers such as granules. It is not particularly limited. Further, the coating method may be a rolling type such as a fluidized bed or a rotating drum, as is well known.
【００２２】[0022]
【実施例】以下に実施例により詳細に説明するが、係る
実施例に限定されるものではない。EXAMPLES The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples.
【００２３】実施例１ 塔径が１０ｃｍの流動被覆装置に平均粒径が３．３ｍｍ
の尿素８００ｇを仕込み、下部より７０ｍ3 ／Ｈｒで熱
風を送り流動させ８０℃に保持した。Example 1 A fluidized bed coating apparatus having a tower diameter of 10 cm had an average particle diameter of 3.3 mm.
800 g of urea was charged, and hot air was blown from the bottom at 70 m 3 / Hr to flow and keep the temperature at 80 ° C.
【００２４】一方、上部より８０℃に加熱した被覆材
（６０％大豆油変性アルキッド樹脂３０％、ロジン酸グ
リセリンエステル１５％、桐油３０％、ボイル油２０
％、金属石鹸３％、皮張防止剤２％）とワックス（日本
精蝋（株）：ＨＮＰ−９）の混合物を２流体ノズルを用
い１．７ｇ／ｍｉｎの速度で肥料粒上に噴霧し一定膜厚
（被覆率＝１１％）の被覆粒状肥料を得た。On the other hand, a coating material (60% soybean oil-modified alkyd resin 30%, rosin acid glycerin ester 15%, tung oil 30%, boil oil 20) heated to 80 ° C. from above.
%, Metal soap 3%, skin tension preventing agent 2%) and a mixture of wax (Nippon Seiwa Co., Ltd .: HNP-9) are sprayed on the fertilizer granules at a constant rate of 1.7 g / min using a two-fluid nozzle. A coated granular fertilizer having a film thickness (coverage = 11%) was obtained.
【００２５】得られた被覆粒状肥料は窒素（Ｎ）の溶出
試験に供した。被覆材とワックスの配合比は表１に示し
た。また、その結果を表２に示した。この溶出率の測定
は被覆粒状肥料を一定量の水に投入し、２５℃の恒温槽
内に放置し一定期間後に取り出し、肥料と溶液を分別
し、水中に溶出した窒素分を定量し求める。The coated granular fertilizer thus obtained was subjected to a nitrogen (N) dissolution test. The compounding ratio of the coating material and the wax is shown in Table 1. The results are shown in Table 2. To measure the dissolution rate, the coated granular fertilizer is put into a fixed amount of water, left in a constant temperature bath at 25 ° C., taken out after a fixed period of time, the fertilizer and the solution are separated, and the nitrogen content eluted in the water is quantitatively determined.
【００２６】[0026]
【表１】 [Table 1]
【００２７】[0027]
【表２】 [Table 2]
【００２８】実施例２ 塔径が１０ｃｍの流動被覆装置に平均粒径が３．３ｍｍ
の尿素８００ｇを仕込み、下部より７０ｍ3 ／Ｈｒで熱
風を送り流動させ８０℃に保持した。Example 2 A fluidized bed coating apparatus having a tower diameter of 10 cm and an average particle diameter of 3.3 mm was used.
800 g of urea was charged, and hot air was blown from the bottom at 70 m 3 / Hr to flow and keep the temperature at 80 ° C.
【００２９】一方、上部より８０℃に加熱した一次被覆
材（６０％大豆油変性アルキッド樹脂３０％、ロジン酸
グリセリンエステル１５％、桐油３０％、ボイル油２０
％、金属石鹸３％、皮張防止剤２％）を２流体ノズルを
用い１．７ｇ／ｍｉｎの速度で肥料粒上に噴霧し一次膜
を形成させた。さらに、二次被覆材〔ワックス（パラフ
ィンワックス１５５：日本精蝋（株））及び石油樹脂
（アルコンＰ−１００：荒川化学（株））混合品（混合
比＝１：１）〕を同様の方法で噴霧して、被覆膜の膜厚
が異なる種々の被覆粒状肥料を得た。On the other hand, a primary coating material (60% soybean oil-modified alkyd resin 30%, rosin acid glycerin ester 15%, tung oil 30%, boil oil 20) heated from the top to 80 ° C.
%, 3% metal soap, 2% anti-skinning agent) was sprayed onto the fertilizer granules at a rate of 1.7 g / min using a two-fluid nozzle to form a primary film. Further, a secondary coating material [wax (paraffin wax 155: Nippon Seiro Co., Ltd.) and petroleum resin (Alcon P-100: Arakawa Chemical Co., Ltd.) mixture (mixing ratio = 1: 1)] was used in the same manner. Was sprayed on to obtain various coated granular fertilizers having different coating film thicknesses.
【００３０】得られた被覆粒状肥料は窒素（Ｎ）の溶出
試験に供した。被覆材とワックスの配合比は表３に示し
た。また、その結果を表４に示した。溶出率の測定は実
施例１に準ずる。The coated granular fertilizer thus obtained was subjected to a nitrogen (N) dissolution test. The compounding ratio of the coating material and the wax is shown in Table 3. The results are shown in Table 4. The dissolution rate is measured according to Example 1.
【００３１】[0031]
【表３】 [Table 3]
【００３２】[0032]
【表４】 [Table 4]
【００３３】実施例３ 塔径が１０ｃｍの流動被覆装置に平均粒径が３．３ｍｍ
の尿素８００ｇを仕込み、下部より７０ｍ3 ／Ｈｒで熱
風を送り流動させ８０℃に保持した。Example 3 A fluidized bed coating apparatus having a tower diameter of 10 cm and an average particle diameter of 3.3 mm was used.
800 g of urea was charged, and hot air was blown from the bottom at 70 m 3 / Hr to flow and keep the temperature at 80 ° C.
【００３４】一方、上部より８０℃に加熱した一次被覆
材〔ワックス（パラフィンワックス１５５：日本精蝋
（株））及び石油樹脂（アルコンＰ−１００：荒川化学
（株））混合品（混合比＝１：１）〕を２流体ノズルを
用い１．７ｇ／ｍｉｎの速度で肥料粒上に噴霧し一次膜
を形成させた。さらに、二次被覆材（６０％大豆油変性
アルキッド樹脂３０％、ロジン酸グリセリンエステル１
５％、桐油３０％、ボイル油２０％、金属石鹸３％、皮
張防止剤２％）を同様の方法で噴霧して、被覆膜の膜厚
が異なる種々の被覆粒状肥料を得た。On the other hand, a mixture of primary coating material [wax (paraffin wax 155: Nippon Seiro Co., Ltd.) and petroleum resin (Alcon P-100: Arakawa Chemical Co., Ltd.)] heated from the top to 80 ° C. (mixing ratio = 1: 1)] was sprayed onto the fertilizer granules at a rate of 1.7 g / min using a two-fluid nozzle to form a primary film. Furthermore, a secondary coating material (60% soybean oil-modified alkyd resin 30%, rosin acid glycerin ester 1
5%, tung oil 30%, boil oil 20%, metal soap 3%, skin tension inhibitor 2%) were sprayed in the same manner to obtain various coated granular fertilizers having different coating film thicknesses.
【００３５】得られた被覆粒状肥料は窒素（Ｎ）の溶出
試験に供した。被覆材とワックスの配合比は表５に示し
た。また、その結果を表６に示した。溶出率の測定は実
施例１に準ずる。The coated granular fertilizer thus obtained was subjected to a nitrogen (N) elution test. The compounding ratio of the coating material and the wax is shown in Table 5. The results are shown in Table 6. The dissolution rate is measured according to Example 1.
【００３６】[0036]
【表５】 [Table 5]
【００３７】[0037]
【表６】 [Table 6]
【００３８】実施例４ 塔径が１０ｃｍの流動被覆装置に平均粒径が３．３ｍｍ
の尿素８００ｇを仕込み、下部より７０ｍ3 ／Ｈｒで熱
風を送り流動させ８０℃に保持した。Example 4 A fluidized bed coating apparatus having a tower diameter of 10 cm had an average particle diameter of 3.3 mm.
800 g of urea was charged, and hot air was blown from the bottom at 70 m 3 / Hr to flow and keep the temperature at 80 ° C.
【００３９】一方、上部より８０℃に加熱した被覆材
（６０％大豆油変性アルキッド樹脂３０％、ロジン酸グ
リセリンエステル１５％、桐油３０％、ボイル油２０
％、金属石鹸３％、皮張防止剤２％）とワックス（日本
精蝋（株）：ＨＮＰ−９）の混合物を２／３層（被覆率
＝７．３％）、２流体ノズルを用い１．７ｇ／ｍｉｎの
速度で肥料粒上に噴霧し、その後、６０℃に加熱したア
ルキッド系被覆材（６０％大豆油変性アルキッド樹脂３
０％、ロジン酸グリセリンエステル１５％、桐油３０
％、ボイル油２０％、金属石鹸３％、皮張防止剤２％）
を１／３層（被覆率＝３．７％）、２流体ノズルを用い
１．７ｇ／ｍｉｎの速度で肥料粒上に噴霧し、一定膜厚
（被覆率＝１１％）の被覆粒状肥料を得た。On the other hand, a coating material (60% soybean oil-modified alkyd resin 30%, rosin acid glycerin ester 15%, tung oil 30%, boil oil 20) heated to 80 ° C. from above.
%, Metal soap 3%, anti-skinning agent 2%) and a mixture of wax (NIPPON SEIWA CO., LTD .: HNP-9) in 2/3 layer (coverage = 7.3%) using a two-fluid nozzle 1 The alkyd-based coating material (60% soybean oil-modified alkyd resin 3 sprayed on the fertilizer granules at a rate of 0.7 g / min and then heated to 60 ° C.)
0%, rosin acid glycerin ester 15%, tung oil 30
%, Boil oil 20%, metal soap 3%, skin tension inhibitor 2%)
1/3 layer (coverage = 3.7%) is sprayed onto fertilizer granules at a rate of 1.7 g / min using a two-fluid nozzle to form a coated granular fertilizer with a constant film thickness (coverage = 11%). Obtained.
【００４０】得られた被覆粒状肥料は窒素（Ｎ）の溶出
試験に供した。被覆材とワックスの配合比は表７に示し
た。また、その結果を表８に示した。溶出率の測定は実
施例１に準ずる。The obtained coated granular fertilizer was subjected to a nitrogen (N) dissolution test. The compounding ratio of the coating material and the wax is shown in Table 7. The results are shown in Table 8. The dissolution rate is measured according to Example 1.
【００４１】[0041]
【表７】 [Table 7]
【００４２】[0042]
【表８】 [Table 8]
【００４３】[0043]
【発明の効果】本発明の被覆用組成物は、有機溶剤を含
有していないため、引火性等の危険性がなく、環境汚染
問題等もない。さらに本発明の被覆用組成物を用いれ
ば、粒状肥料の溶出速度の調節が可能となり、長期にわ
たり肥効を持続させることができる。Since the coating composition of the present invention does not contain an organic solvent, there is no danger of flammability and no environmental pollution problem. Furthermore, by using the coating composition of the present invention, the elution rate of the granular fertilizer can be adjusted, and the fertilizing effect can be maintained for a long period of time.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 今田 一年 山口県宇部市大字沖宇部5253番地 セント ラル硝子株式会社宇部研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazutoshi Imada 5253 Oki Ube, Ube City, Yamaguchi Prefecture Central Rural Co., Ltd. Ube Laboratory
Claims (7)
重結合を有する不飽和油、エステルガム及びボイル油
と、ワックス、石油樹脂またはロジンおよびその誘導体
の少なくとも一種以上からなる肥料被覆用組成物。1. A fertilizer coating composition comprising an oil-modified alkyd resin, an unsaturated oil having a conjugated double bond in the molecule, ester gum and boil oil, and at least one or more of wax, petroleum resin or rosin and its derivatives. .
ッド樹脂、分子中に共役二重結合を有する不飽和油、エ
ステルガム及びボイル油と、ワックス、石油樹脂または
ロジンおよびその誘導体の少なくとも一種以上からなる
肥料被覆用組成物で被覆されてなることを特徴とする被
覆粒状肥料。2. The surface of the granular fertilizer is mainly composed of an oil-modified alkyd resin, unsaturated oil having a conjugated double bond in the molecule, ester gum and boil oil, and at least one or more of wax, petroleum resin or rosin and its derivatives. A coated granular fertilizer characterized by being coated with a fertilizer coating composition.
ッド樹脂、分子中に共役二重結合を有する不飽和油、エ
ステルガム及びボイル油からなる肥料被覆用組成物で被
覆され、さらにその外層をワックス、石油樹脂またはロ
ジンおよびその誘導体の少なくとも一種以上からなる肥
料被覆用組成物で被覆されてなることを特徴とする被覆
粒状肥料。3. The surface of the granular fertilizer is coated with a fertilizer coating composition mainly composed of an oil-modified alkyd resin, an unsaturated oil having a conjugated double bond in the molecule, an ester gum and a boil oil, and the outer layer thereof is wax. A coated granular fertilizer characterized by being coated with a fertilizer coating composition comprising at least one of petroleum resin or rosin and its derivatives.
油樹脂またはロジンおよびその誘導体の少なくとも一種
以上からなる肥料被覆用組成物で被覆され、その外層を
油変性アルキッド樹脂、分子中に共役二重結合を有する
不飽和油、エステルガム及びボイル油からなる肥料被覆
用組成物で被覆されてなることを特徴とする被覆粒状肥
料。4. The surface of the granular fertilizer is coated with a fertilizer coating composition mainly comprising wax, petroleum resin or at least one kind of rosin and its derivatives, and the outer layer thereof is an oil-modified alkyd resin and a conjugated double bond in the molecule. A coated granular fertilizer, which is coated with a fertilizer-coating composition comprising an unsaturated oil having an ester, an ester gum, and a boiled oil.
ッド樹脂、分子中に共役二重結合を有する不飽和油、エ
ステルガム及びボイル油からなる肥料被覆用組成物で被
覆され、さらにその外層を油変性アルキッド樹脂、分子
中に共役二重結合を有する不飽和油、エステルガム及び
ボイル油と、ワックス、石油樹脂またはロジンおよびそ
の誘導体の少なくとも一種以上からなる肥料被覆用組成
物で被覆されてなることを特徴とする被覆粒状肥料。5. The surface of the granular fertilizer is coated with a fertilizer coating composition mainly composed of an oil-modified alkyd resin, an unsaturated oil having a conjugated double bond in the molecule, an ester gum and a boil oil, and the outer layer thereof is further coated with an oil. Modified alkyd resin, unsaturated oil having a conjugated double bond in the molecule, ester gum and boil oil, and a fertilizer coating composition comprising at least one of wax, petroleum resin or rosin and its derivatives. Coated granular fertilizer characterized by.
ッド樹脂、分子中に共役二重結合を有する不飽和油、エ
ステルガム及びボイル油と、ワックス、石油樹脂または
ロジンおよびその誘導体の少なくとも一種以上からなる
肥料被覆用組成物で被覆され、その外層を油変性アルキ
ッド樹脂、分子中に共役二重結合を有する不飽和油、エ
ステルガム及びボイル油からなる肥料被覆用組成物で被
覆されてなることを特徴とする被覆粒状肥料。6. The surface of the granular fertilizer is mainly composed of an oil-modified alkyd resin, unsaturated oil having a conjugated double bond in the molecule, ester gum and boil oil, and at least one or more of wax, petroleum resin or rosin and its derivatives. It is coated with a fertilizer coating composition consisting of an oil-modified alkyd resin, an unsaturated oil having a conjugated double bond in the molecule, an ester gum and a fertilizer coating composition consisting of boiled oil. Characterized coated granular fertilizer.
調節をワックス、石油樹脂またはロジンおよびその誘導
体の種類、添加量を変化させることにより溶出パターン
を制御することを特徴とする被覆粒状肥料の製造法。7. A coating characterized by controlling the elution pattern of the coated granular fertilizer according to any one of claims 2 to 6 by changing the type and addition amount of wax, petroleum resin or rosin and its derivatives. Granular fertilizer manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5213192A JPH0769770A (en) | 1993-08-27 | 1993-08-27 | Composition for coating fertilizer, coated granular fertilizer and their production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5213192A JPH0769770A (en) | 1993-08-27 | 1993-08-27 | Composition for coating fertilizer, coated granular fertilizer and their production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0769770A true JPH0769770A (en) | 1995-03-14 |
Family
ID=16635067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5213192A Pending JPH0769770A (en) | 1993-08-27 | 1993-08-27 | Composition for coating fertilizer, coated granular fertilizer and their production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0769770A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0769769A (en) * | 1993-08-27 | 1995-03-14 | Central Glass Co Ltd | Composition for coating fertilizer and coated granular fertilizer |
| JP2007261940A (en) * | 2006-03-27 | 2007-10-11 | Godrej Agrovet Ltd | Neem-based composition for coating nitrogenous fertilizer |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4924752A (en) * | 1972-06-29 | 1974-03-05 | ||
| JPS5238361A (en) * | 1975-09-22 | 1977-03-24 | Ube Industries | Slowly available coated granular fertilizer |
| JPS5466260A (en) * | 1977-10-25 | 1979-05-28 | Showa Denko Kk | Slowly acting solid fertilizer |
| JPS61151085A (en) * | 1984-12-25 | 1986-07-09 | 三井東圧化学株式会社 | Hygroscopicity prevention for substance for granular hygroscopic fertilizer |
| JPS62197385A (en) * | 1986-02-20 | 1987-09-01 | 旭化成株式会社 | Coated granular fertilizer |
| JPH01108188A (en) * | 1987-10-20 | 1989-04-25 | Chisso Corp | Coated granular fertilizer and manufacture |
| JPH03146492A (en) * | 1989-11-01 | 1991-06-21 | Asahi Chem Ind Co Ltd | Coated granular fertilizer with degradable coating film |
| JPH054887A (en) * | 1991-06-26 | 1993-01-14 | Central Glass Co Ltd | Composition for coating fertilizer, coated granular fertilizer and their production |
| JPH0769769A (en) * | 1993-08-27 | 1995-03-14 | Central Glass Co Ltd | Composition for coating fertilizer and coated granular fertilizer |
-
1993
- 1993-08-27 JP JP5213192A patent/JPH0769770A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4924752A (en) * | 1972-06-29 | 1974-03-05 | ||
| JPS5238361A (en) * | 1975-09-22 | 1977-03-24 | Ube Industries | Slowly available coated granular fertilizer |
| JPS5466260A (en) * | 1977-10-25 | 1979-05-28 | Showa Denko Kk | Slowly acting solid fertilizer |
| JPS61151085A (en) * | 1984-12-25 | 1986-07-09 | 三井東圧化学株式会社 | Hygroscopicity prevention for substance for granular hygroscopic fertilizer |
| JPS62197385A (en) * | 1986-02-20 | 1987-09-01 | 旭化成株式会社 | Coated granular fertilizer |
| JPH01108188A (en) * | 1987-10-20 | 1989-04-25 | Chisso Corp | Coated granular fertilizer and manufacture |
| JPH03146492A (en) * | 1989-11-01 | 1991-06-21 | Asahi Chem Ind Co Ltd | Coated granular fertilizer with degradable coating film |
| JPH054887A (en) * | 1991-06-26 | 1993-01-14 | Central Glass Co Ltd | Composition for coating fertilizer, coated granular fertilizer and their production |
| JPH0769769A (en) * | 1993-08-27 | 1995-03-14 | Central Glass Co Ltd | Composition for coating fertilizer and coated granular fertilizer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0769769A (en) * | 1993-08-27 | 1995-03-14 | Central Glass Co Ltd | Composition for coating fertilizer and coated granular fertilizer |
| JP2007261940A (en) * | 2006-03-27 | 2007-10-11 | Godrej Agrovet Ltd | Neem-based composition for coating nitrogenous fertilizer |
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