JP2004043322A - Agricultural granular wettable powder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide new granular wettable powder having excellent disintegrating properties and dispersion stability during dilution with water. <P>SOLUTION: This granular wettable powder comprises (a) one or two or more kinds of agrochemically active ingredients and (b) a polyoxyethylene alkylaryl ether hydroxysulfonic acid or an alkali metal salt, an alkaline earth metal salt, an amine salt or an amine salt thereof. <P>COPYRIGHT: (C)2004,JPO

Description

【００２７】
本発明の粒状水和剤には、必要に応じてその他の界面活性剤を含有してもよい。　その他の界面活性剤としては、以下の（Ａ）、（Ｂ）、（Ｃ）、（Ｄ）および（Ｅ）が挙げられる。
【００２８】
（Ａ）ノニオン性界面活性剤：
（Ａ−１）ポリエチレングリコール型界面活性剤：例えば、ポリオキシエチレンアルキル（Ｃ_{１２〜１８}）エーテル、アルキルナフトールのエチレンオキサイド付加物、ポリオキシエチレン（モノまたはジ）アルキル（Ｃ_８〜１２）フェニルエーテル、ポリオキシエチレン（モノまたはジ）アルキル（Ｃ_８〜１２）フェニルエーテルのホルマリン縮合物、ポリオキシエチレン（モノ、ジまたはトリ）フェニルフェニルエーテル、ポリオキシエチレン（モノ、ジまたはトリ）ベンジルフェニルエーテル、ポリオキシプロピレン（モノ、ジまたはトリ）ベンジルフェニルエーテル、ポリオキシエチレン（モノ、ジまたはトリ）スチリルフェニルエーテル、ポリオキシプロピレン（モノ、ジまたはトリ）スチリルフェニルエーテル、ポリオキシエチレン（モノ、ジまたはトリ）スチリルフェニルエーテルのポリマー、ポリオキシエチレンポリオキシプロピレンブロックポリマー、アルキル（Ｃ_{１２〜１８}）ポリオキシエチレンポリオキシプロピレンブロックポリマーエーテル、アルキル（Ｃ_８〜１２）フェニルポリオキシエチレンポリオキシプロピレンブロックポリマーエーテル、ポリオキシエチレンビスフェニルエーテル、ポリオキシエチレン樹脂酸エステル、ポリオキシエチレン脂肪酸（Ｃ_{１２〜１８}）モノエステル、ポリオキシエチレン脂肪酸（Ｃ_{１２〜１８}）ジエステル、ポリオキシエチレンソルビタン脂肪酸（Ｃ_{１２〜１８}）エステル、グリセロール脂肪酸エステルエチレンオキサイド付加物、ヒマシ油エチレンオキサイド付加物、硬化ヒマシ油エチレンオキサイド付加物、アルキル（Ｃ_{１２〜１８}）アミンエチレンオキサイド付加物および脂肪酸（Ｃ_{１２〜１８}）アミドエチレンオキサイド付加物等が挙げられる。
【００２９】
（Ａ−２）多価アルコール型界面活性剤：例えば、グリセロール脂肪酸エステル、ポリグリセリン脂肪酸エステル、ペンタエリスリトール脂肪酸エステル、ソルビトール脂肪酸（Ｃ_{１２〜１８}）エステル、ソルビタン脂肪酸（Ｃ_{１２〜１８}）エステル、ショ糖脂肪酸エステル、多価アルコールアルキルエーテルおよび脂肪酸アルカノールアミド等が挙げられる。
【００３０】
（Ａ−３）アセチレン系界面活性剤：例えば、アセチレングリコール、アセチレンアルコール、アセチレングリコールのエチレンオキサイド付加物およびアセチレンアルコールのエチレンオキサイド付加物等が挙げられる。
【００３１】
（Ａ−４）その他の界面活性剤：例えば、アルキルグリコシド等が挙げられる。
【００３２】
（Ｂ）アニオン性界面活性剤：
（Ｂ−１）カルボン酸型界面活性剤：例えば、ポリアクリル酸、ポリメタアクリル酸、ポリマレイン酸、マレイン酸とオレフィン（例えばイソブチレンおよびジイソブチレン等）との共重合物、アクリル酸とイタコン酸の共重合物、メタアクリル酸とイタコン酸の共重合物、マレイン酸とスチレンの共重合物、アクリル酸とメタアクリル酸の共重合物、アクリル酸とアクリル酸メチルエステルとの共重合物、アクリル酸と酢酸ビニルとの共重合物、アクリル酸とマレイン酸の共重合物、Ｎ−メチル−脂肪酸（Ｃ_{１２〜１８}）サルコシネート、樹脂酸および脂肪酸（Ｃ_{１２〜１８}）等のカルボン酸、並びにそれらカルボン酸の塩が挙げられる。
【００３３】
（Ｂ−２）硫酸エステル型界面活性剤：例えば、アルキル（Ｃ_{１２〜１８}）硫酸エステル、ポリオキシエチレンアルキル（Ｃ_{１２〜１８}）エーテル硫酸エステル、ポリオキシエチレン（モノまたはジ）アルキル（Ｃ_８〜１２）フェニルエーテル硫酸エステル、ポリオキシエチレン（モノまたはジ）アルキル（Ｃ_８〜１２）フェニルエーテルのポリマーの硫酸エステル、ポリオキシエチレン（モノ、ジまたはトリ）フェニルフェニルエーテル硫酸エステル、ポリオキシエチレン（モノ、ジまたはトリ）ベンジルフェニルエーテル硫酸エステル、ポリオキシエチレン（モノ、ジまたはトリ）スチリルフェニルエーテル硫酸エステル、ポリオキシエチレン（モノ、ジまたはトリ）スチリルフェニルエーテルのポリマーの硫酸エステル、ポリオキシエチレンポリオキシプロピレンブロックポリマーの硫酸エステル、硫酸化油、硫酸化脂肪酸エステル、硫酸化脂肪酸および硫酸化オレフィン等の硫酸エステル、並びにそれら硫酸エステルの塩が挙げられる。
【００３４】
（Ｂ−３）スルホン酸型界面活性剤：例えば、パラフィン（Ｃ_{１２〜２２}）スルホン酸、アルキル（Ｃ_８〜１２）ベンゼンスルホン酸、アルキル（Ｃ_８〜１２）ベンゼンスルホン酸のホルマリン縮合物、クレゾールスルホン酸のホルマリン縮合物、α−オレフィン（Ｃ_{１４〜１６}）スルホン酸、ジアルキル（Ｃ_８〜１２）スルホコハク酸、ポリオキシエチレン（モノまたはジ）アルキル（Ｃ_８〜１２）フェニルエーテルスルホン酸、ポリオキシエチレンアルキル（Ｃ_{１２〜１８}）エーテルスルホコハク酸ハーフエステル、ナフタレンスルホン酸、（モノまたはジ）アルキル（Ｃ_１〜６）ナフタレンスルホン酸、クレオソート油スルホン酸のホルマリン縮合物、アルキル（Ｃ_８〜１２）ジフェニルエーテルジスルホン酸、イゲポンＴ（商品名）、ポリスチレンスルホン酸およびスチレンスルホン酸とメタアクリル酸の共重合物等のスルホン酸、並びにそれらスルホン酸の塩が挙げられる。
【００３５】
（Ｂ−４）燐酸エステル型界面活性剤：例えば、アルキル（Ｃ_８〜１２）燐酸エステル、ポリオキシエチレンアルキル（Ｃ_{１２〜１８}）エーテル燐酸エステル、ポリオキシエチレン（モノまたはジ）アルキル（Ｃ_８〜１２）フェニルエーテル燐酸エステル、ポリオキシエチレン（モノ、ジまたはトリ）アルキル（Ｃ_８〜１２）フェニルエーテルのポリマーの燐酸エステル、ポリオキシエチレン（モノ、ジまたはトリ）フェニルフェニルエーテル燐酸エステル、ポリオキシエチレン（モノ、ジまたはトリ）ベンジルフェニルエーテル燐酸エステル、ポリオキシエチレン（モノ、ジまたはトリ）スチリルフェニルエーテル燐酸エステル、ポリオキシエチレン（モノ、ジまたはトリ）スチリルフェニルエーテルのポリマーの燐酸エステル、ポリオキシエチレンポリオキシプロピレンブロックポリマーの燐酸エステル、ホスファチジルコリン、ホスファチジルエタノールイミンおよび縮合燐酸（例えばトリポリリン酸等）等の燐酸エステル、並びにそれら燐酸エステルの塩が挙げられる。
【００３６】
上記の（Ｂ−１）〜（Ｂ−４）における塩としては、アルカリ金属（リチウム、ナトリウムおよびカリウム等）、アルカリ土類金属（カルシウムおよびマグネシウム等）、アンモニウムおよび各種アミン（例えばアルキルアミン、シクロアルキルアミンおよびアルカノールアミン等）等が挙げられる。
【００３７】
（Ｃ）カチオン性界面活性剤：
例えば、アルキルアミン塩およびアルキル４級アンモニウム塩等が挙げられる。
【００３８】
（Ｄ）両性界面活性剤：
例えば、ベタイン型界面活性剤およびアミノ酸型界面活性剤等が挙げられる。
【００３９】
（Ｅ）その他の界面活性剤：
例えば、シリコーン系界面活性剤およびフッ素系界面活性剤等が挙げられる。
【００４０】
本発明の粒状水和剤には、必要に応じ増量剤として鉱物質粉末あるいは水溶性粉末を含有させることができる。鉱物質粉末としては、ケイソウ土、タルク、クレー、ベントナイトおよび炭酸カルシウム等が用いられる。水溶性粉末としては、糖類、尿素、および各種塩類等が用いられる。糖類としては、乳糖、果糖およびブドウ糖等が挙げられ、塩類としては、硫酸、燐酸、塩酸、硝酸、もしくは炭酸のアルカリ金属塩およびアンモニウム塩等が挙げられる。これら増量剤は単独で用いてもよいし、２種以上を混合して用いてもよい。
【００４１】
また、必要に応じてその他の補助剤として、結合剤、粉砕助剤（例えばホワイトカーボン、ケイソウ土、脂肪酸およびリン酸エステル等）、吸収剤、分解防止剤、着色剤または消泡剤等を添加してもよい。
【００４２】
本発明の粒状水和剤は以下の方法により製造される。即ち、第１の製造法としては、（ａ）および（ｂ）を、必要に応じて（ｃ）、その他の界面活性剤、増量剤およびその他の補助剤を加えて、均一に混合した後、微粉砕する。微粉砕は衝撃式粉砕機、ボールミルおよびジェットオーマイザー等の乾式粉砕機により行なうことができる。次いで得られた微粉末に更に必要に応じて、（ｂ）、（ｃ）、その他の界面活性剤、増量剤およびその他の補助剤を適量加えて混合し、適量の水を加え混練したのち、造粒機を用いて造粒し、乾燥して目的物を得る。造粒は押出造粒機、加圧造粒機、流動層造粒機、撹拌造粒機または転動造粒機等の造粒機により行なうことができる。
【００４３】
また、第２の製造法としては、適量の水に、（ａ）および（ｂ）を加えて、必要に応じて（ｃ）、その他の界面活性剤、増量剤、その他の補助剤をさらに加えて、湿式粉砕機で微粉砕する。微粉砕は、ボールミルおよびサンドグラインダー等の湿式粉砕機により行なうことができる。次いで得られた水性懸濁液に、更に必要に応じて、（ｂ）、（ｃ）、その他の界面活性剤、増量剤およびその他の補助剤を適量加えて混合し、これを噴霧乾燥機で噴霧乾燥して目的物を得ることができる。
【００４４】
そして第３の製造法としては、適量の水に、（ａ）および（ｂ）を加えて、必要に応じて（ｃ）、その他界面活性剤、増量剤およびその他の補助剤をさらに加えて、湿式粉砕機で微粉砕する。微粉砕は、ボールミルおよびサンドグラインダー等の湿式粉砕機により行うことができる。次いで得られた水性懸濁液に増量剤を加え、更に必要に応じて（ｂ）、（ｃ）、その他の界面活性剤およびその他の補助剤を適量加えて混合し、混練してペースト状にした後、造粒機を用いて造粒し、乾燥して目的物を得る。造粒は押出造粒機、加圧造粒機、流動層造粒機、攪拌造粒機および転動造粒機等の造粒機により行うことができる。
【００４５】
本発明の粒状水和剤の粒径は特に限定されるものではないが、通常０．１〜２ｍｍ程度が望ましい。
【００４６】
【実施例】
次に本発明の実施例を具体的に挙げて説明するが、本発明はこれらの実施例のみに限定されるものではない。なお、部とあるのはすべて質量部を示す。
【００４７】
〔実施例１〕　ピリダベン（一般名）５４部、リグニンスルホン酸ナトリウム１７部、硫酸アンモニウム２７部をジェットオーマイザー（セイシン企業製）で微粉砕した。この微粉砕物９８部、ポリオキシエチレンアルキルアリールエーテルヒドロキシスルホン酸ナトリウム塩２部、水２５部を加えて混合したた次いで口径０．５ｍｍのスクリーンを装着した押出し式造粒機を用いて造粒した。５０℃で乾燥後、２０〜５０メッシュの篩いで整粒して本発明の粒状水和剤を得た。
【００４８】
〔実施例２〕　ピリダベン（一般名）５４部、アルキルナフタレンスルホン酸ホルマリン縮合物ナトリウム塩５部、リグニンスルホン酸ナトリウム塩とナフタレンスルホン酸ホルマリン縮合物ナトリウム塩の混合物１４部、硫酸アンモニウム２５部をジェットオーマイザー（セイシン企業製）で微粉砕した。この微粉砕物９８部、ポリオキシエチレンアルキルアリールエーテルヒドロキシスルホン酸ナトリウム塩２部、水２５部を加えて混合したた次いで口径０．５ｍｍのスクリーンを装着した押出し式造粒機を用いて造粒した。５０℃で乾燥後、２０〜５０メッシュの篩いで整粒して本発明の粒状水和剤を得た。
【００４９】
〔実施例３〕　ピリダベン（一般名）５４部、ビスフェノールスルホン酸縮合物ナトリウム塩２５部、硫酸アンモニウム１９部をジェットオーマイザー（セイシン企業製）で微粉砕した。この微粉砕物９８部、ポリオキシエチレンアルキルアリールエーテルヒドロキシスルホン酸ナトリウム塩２部、水４０部を加えて混合したた次いで口径０．５ｍｍのスクリーンを装着した押出し式造粒機を用いて造粒した。５０℃で乾燥後、２０〜５０メッシュの篩いで整粒して本発明の粒状水和剤を得た。
【００５０】
〔実施例４〕　キザロホップブチル（一般名）５４部、リグニンスルホン酸ナトリウム塩７部、アルキルナフタレンスルホン酸ホルマリン縮合物ナトリウム塩１０部、硫酸アンモニウム２７部をジェットオーマイザー（セイシン企業製）で微粉砕した。この微粉砕物９８部、ポリオキシエチレンアルキルアリールエーテルヒドロキシスルホン酸ナトリウム塩２部、水３５部を加えて混合したた次いで口径０．５ｍｍのスクリーンを装着した押出し式造粒機を用いて造粒した。５０℃で乾燥後、２０〜５０メッシュの篩いで整粒して本発明の粒状水和剤を得た。
【００５１】
〔実施例５〕　キザロホップブチル（一般名）５４部、ビスフェノールスルホン酸縮合物ナトリウム塩２０部、硫酸アンモニウム２４部をジェットオーマイザー（セイシン企業製）で微粉砕した。この微粉砕物９８部、ポリオキシエチレンアルキルアリールエーテルヒドロキシスルホン酸ナトリウム塩２部、水３５部を加えて混合したた次いで口径０．５ｍｍのスクリーンを装着した押出し式造粒機を用いて造粒した。５０℃で乾燥後、２０〜５０メッシュの篩いで整粒して本発明の粒状水和剤を得た。
【００５２】
〔実施例６〕　キザロホップブチル（一般名）５４部、アルキルナフタレンスルホン酸ホルマリン縮合物ナトリウム塩８部、リグニンスルホン酸ナトリウム塩とナフタレンスルホン酸ホルマリン縮合物ナトリウム塩の混合物１１部、硫酸アンモニウム２５部をジェットオーマイザー（セイシン企業製）で微粉砕した。この微粉砕物９８部、ポリオキシエチレンアルキルアリールエーテルヒドロキシスルホン酸ナトリウム塩２部、水３０部を加えて混合したた次いで口径０．５ｍｍのスクリーンを装着した押出し式造粒機を用いて造粒した。５０℃で乾燥後、２０〜５０メッシュの篩いで整粒して本発明の粒状水和剤を得た。
【００５３】
〔実施例７〕　ピラゾスルフロンエチル（一般名）５３部、ビスフェノールスルホン酸縮合物ナトリウム塩７部、リグニンスルホン酸ナトリウム塩７部、硫酸アンモニウム２０部、クレー１１部をジェットオーマイザー（セイシン企業製）で微粉砕した。この微粉砕物９８部、ポリオキシエチレンアルキルアリールエーテルヒドロキシスルホン酸ナトリウム塩２部、水１５部を加えて混合したた次いで口径０．５ｍｍのスクリーンを装着した押出し式造粒機を用いて造粒した。５０℃で乾燥後、２０〜５０メッシュの篩いで整粒して本発明の粒状水和剤を得た。
【００５４】
〔実施例８〕　ピラゾスルフロンエチル（一般名）５３部、アルキルナフタレンスルホン酸ホルマリン縮合物ナトリウム塩１０部、リグニンスルホン酸ナトリウム塩とナフタレンスルホン酸ホルマリン縮合物ナトリウム塩の混合物７部、硫酸アンモニウム２０部、クレー７部をジェットオーマイザー（セイシン企業製）で微粉砕した。この微粉砕物９８部、ポリオキシエチレンアルキルアリールエーテルヒドロキシスルホン酸ナトリウム塩２部、水１５部を加えて混合したた次いで口径０．５ｍｍのスクリーンを装着した押出し式造粒機を用いて造粒した。５０℃で乾燥後、２０〜５０メッシュの篩いで整粒して本発明の粒状水和剤を得た。
【００５５】
〔比較例１〕　実施例１において、ポリオキシエチレンアルキルアリールエーテルヒドロキシスルホン酸ナトリウム塩２部の代りにポリオキシエチレンアルキルフェニルエーテル硫酸アンモニウム塩２部を用いたこと以外は実施例１と全く同様に操作して粒状水和剤を得た。
【００５６】
〔比較例２〕　実施例２において、ポリオキシエチレンアルキルアリールエーテルヒドロキシスルホン酸ナトリウム塩２部の代りにポリオキシエチレンアルキルフェニルエーテル硫酸アンモニウム塩２部を用いたこと以外は実施例１と全く同様に操作して粒状水和剤を得た。
【００５７】
〔比較例３〕　実施例４において、ポリオキシエチレンアルキルアリールエーテルヒドロキシスルホン酸ナトリウム塩２部の代りにポリオキシエチレンアルキルフェニルエーテル硫酸アンモニウム塩２部を用いたこと以外は実施例１と全く同様に操作して粒状水和剤を得た。
【００５８】
〔比較例４〕　実施例５において、ポリオキシエチレンアルキルアリールエーテルヒドロキシスルホン酸ナトリウム塩２部の代りにポリオキシエチレンアルキルフェニルエーテル硫酸アンモニウム塩２部を用いたこと以外は実施例１と全く同様に操作して粒状水和剤を得た。
【００５９】
〔比較例５〕　実施例７において、ポリオキシエチレンアルキルアリールエーテルヒドロキシスルホン酸ナトリウム塩２部の代りにポリオキシエチレンアルキルフェニルエーテル硫酸アンモニウム塩２部を用いたこと以外は実施例１と全く同様に操作して粒状水和剤を得た。
【００６０】
実施例および比較例より得られた製剤について以下に示す方法にて、分散安定性試験を実施した。
【００６１】
〔試験例１〕　高濃度水希釈液（懸濁液）の分散安定性試験
実施例および比較例で製造した粒状水和剤をそれぞれ１．０ｇ秤量した。秤取した試料を、１０℃の恒温水槽内に設置した１０度硬水１０ｍｌを入れた１０ｍｌ共栓付きメスシリンダーに投入し、２秒間に反転１回のペースで３０回メスシリンダーを反転し水希釈液（懸濁液）の調製した。この水希釈液の２時間後の水面での分離層と水希釈液中の沈降物の量をメスシリンダーのメモリから読み取った。その結果を第２表に示す。
【００６２】
【表２】

【００６３】
第２表のように、本発明の粒状水和剤は、比較例の粒状水和剤に比べて、高濃度水希釈液の分散安定性が優れていた。
【００６４】
【発明の効果】
本発明の粒状水和剤は、農薬活性成分の種類にかかわらず水希釈時に良好な水中での崩壊性が得られ、また時間の経過にかかわらず水希釈液中の農薬活性成分微粒子が良好な分散安定性を示す。さらに、希釈水量が極めて少なくても、即ち水希釈液中の農薬活性成分の濃度が極めて高くても、良好な水中での崩壊性と分散安定性が得られる。[0001]
[Industrial applications]
The present invention relates to a particulate wettable powder having excellent disintegration and dispersion stability upon dilution with water.
[0002]
[Prior art]
A particulate wettable powder is a preparation that is diluted with water to prepare a suspension and to be dispersed. Among the conventional pesticide preparations, other preparations which are diluted with water and sprayed include emulsions, wettable powders and flowables. Since the emulsion uses an organic solvent as a carrier, it has problems such as toxicity, irritation, flammability and odor. On the other hand, since a wettable powder is a fine powdery preparation, it is inconvenient to measure it, and there is a problem of dusting when preparing a spray liquid. The flowable formulation is a formulation that eliminates the inconvenience of measuring the wettable powder and the problem of powdering by making it into a suspension formulation.However, since it is a viscous liquid formulation, it is difficult to remove it from the container, and a small amount of formulation can be used. It may be difficult to dispose of the container because it remains in the container.
[0003]
Therefore, attempts have been made in recent years to granulate a wettable powder in order to eliminate the disadvantages of the above-mentioned preparations. By granulating the wettable powder, the powdering and weighing difficulties of the wettable powder are improved. Further, there is no problem of difficulty in handling due to the high viscosity of the flowable agent. The wettable powder granulated as described above (the above-mentioned granular wettable powder), when diluted with water to prepare a spray liquid, rapidly disintegrates with minimal agitation into fine particles, and the fine particles are dissolved in water. It is important to disperse in a stable manner. If the disintegration property is poor, undisintegrated particles may cause clogging of the nozzle of the sprayer, and if the dispersion stability is poor, the particles will coagulate and settle, and the active ingredient in the spray liquid will be non-uniform, resulting in stable control. No effect can be expected. Furthermore, the particles settle quickly in the water of the surface after spraying, and the diffusibility of the active ingredient is deteriorated, so that a stable control effect cannot be expected.
[0004]
Various techniques relating to the granular wettable powder have been proposed so far. For example, a method in which a sulfated ester-based anionic surfactant to which a polyalkylene group is added or a sulfonate anionic surfactant and a nonionic surfactant are used in combination at a fixed ratio (JP-A-59-193803). And a method of blending an alkyl naphthalene sulfonate or a polyoxyethylene alkyl phenyl ether sulfate (JP-A-6-219903).
[0005]
[Problems to be solved by the invention]
However, such granular wettable powders according to the prior art do not provide good disintegration and dispersion stability upon dilution with water, depending on the type of the pesticidal active ingredient, and the pesticidal active ingredient in the water diluent over time. The fine particles aggregated and separated, which was not always practical. Further, when the amount of the dilution water is small, that is, when the concentration of the pesticidal active ingredient in the water dilution is high, the disintegration and dispersion stability upon dilution with water are disadvantageously reduced.
[0006]
[Means for Solving the Problems]
The present invention relates to the following [1] to [7].
[0007]
[1] A particulate wettable powder containing the following (a) and (b).
(A) one or more pesticidal active ingredients (b) polyoxyethylene alkylaryl ether hydroxysulfonic acid or an alkali metal salt, alkaline earth metal salt, ammonium salt or amine salt thereof [2] Granular wettable powder containing (b) and (c).
(A) one or more pesticidal active ingredients (b) polyoxyethylene alkylaryl ether hydroxysulfonic acid or an alkali metal salt, alkaline earth metal salt, ammonium salt or amine salt thereof (c) bisphenolsulfonic acid formalin condensation Selected from the group consisting of a product, a naphthalenesulfonic acid formalin condensate, an alkylnaphthalenesulfonic acid formalin condensate, ligninsulfonic acid, kraft ligninsulfonic acid, and alkali metal salts, alkaline earth metal salts, ammonium salts and amine salts thereof. Seed or two or more dispersants [3] The particulate wettable powder according to the above [1] or [2], wherein the content of (b) with respect to the particulate wettable powder is 0.1 to 10% by mass.
[0008]
[4] The particulate wettable powder according to the above [2] or [3], wherein the content of (c) with respect to the particulate wettable powder is 1 to 30% by mass.
[0009]
[5] The particulate wettable powder according to any one of the above [1] to [4], wherein the content of (a) with respect to the particulate wettable powder is 1 to 90% by mass.
[0010]
[6] The granular wettable powder according to any one of the above [1] to [5], wherein the granular wettable powder is a granular wettable powder for water dilution and spraying.
[0011]
[7] A method of diluting the particulate wettable powder according to the above [1] to [5] with water and spraying.
[0012]
The granular wettable powder of the present invention has good disintegration in water at the time of dilution with water regardless of the kind of the pesticidal active ingredient, and has good pesticidal active ingredient fine particles in the water diluent regardless of the elapse of time. Shows dispersion stability. Furthermore, even if the amount of dilution water is extremely small, that is, even if the concentration of the pesticidal active ingredient in the water dilution is extremely high, good disintegration and dispersion stability in water can be obtained.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
The polyoxyethylene alkylaryl ether hydroxysulfonic acid of the present invention is represented by the formula (1):
_{R-O (C 2 H 4} O) n - (1)
Wherein R represents an aryl group substituted with one or more alkyl groups (the aryl group represents a phenyl group, a naphthyl group, or the like), and n represents an integer of 2 to 40. An alkylsulfonic acid substituted with a polyoxyethylene alkylaryl ether group and an OH group. As a typical example of polyoxyethylene alkylaryl ether hydroxysulfonic acid or a salt thereof, Newcalgen PG-170 (Takemoto Yushi Co., Ltd.) can be mentioned.
[0014]
The content of polyoxyethylene alkylaryl ether hydroxysulfonic acid or a salt thereof with respect to the particulate wettable powder of the present invention is preferably 0.1 to 10% by mass, and more preferably 0.5 to 5% by mass. The addition amount of 0.1% by mass or more improves the hydration property on the water surface when diluted with water, and the addition amount of 10% by mass or less improves the disintegration property in water when diluted with water.
[0015]
Examples of the pesticidal active ingredient of the present invention include herbicides, insecticides, acaricides, nematicides, bactericides, and bactericides. Representative examples thereof are given below, but are not particularly limited.
[0016]
Herbicides: pyrazosulfuron ethyl (common name), halosulfuron methyl (common name), bensulfuron methyl (common name), imazosulfuron / imazosulfuron / common name Generic name), sinosulfuron (generic name), cyclosulfamuron (generic name), ethoxysulfuron (ethoxysulfuron / generic name), esprocarb (generic name), benthiocarb, generic name (Molinate / common name), dimepiperate (dim piperate / generic name), pyributicarb (generic name), mefenacet (mefenacet / generic name), butachlor (butachlor / generic name), pretilachlor (pretilachlor / generic name), tenylchlor (thienylchlorde / tibrom / tibrom / tibrom) Generic name) etobenzanide (etobenzanid / generic name), dymron (dymron / generic name), cumyluron (cumyluron / generic name), bentazone (bentzone / generic name), salt of bentazone, 2,4-D (generic name), 2, , 4-D salt, 2,4-D ester, MCP (generic name), MCP salt, MCP ester, MCPB (generic name), MCPB salt, MCPB ester Phenothiol (MCPA-thioethyl / generic name), clomeprop (clomeprop / generic name), naproanilide (naproanilide / generic name), oxadiazon (oxadiazon / generic name), pyrazolate (pyrazolate / generic name), pyrazoxifene (pyrazoxifene) ), Benzofenap (benzofenap / generic name), oxadiargyl (oxadiargyl / generic name), dimethamethrin (dimethamethrin / generic name), simethrin (simetryn / generic name), piperophos (generic name / pilophos / anilophos) ), Butamifos (generic name), benzulide (bensulide / generic name), dithi Opil (dithiopyr / generic name), pyriminobac methyl (generic name), CNP (generic name), chloromethoxynil (chlormethoxynil / generic name), cyhalofop butyl (cyhalofop butyl / generic name), bifenox (bifenox) General name), cafenstrole (cafenstrole / generic name), pentoxazone (pentoxazone / generic name), indanophane (indanofan / generic name), oxadiclomefone (oxaziclomefone / generic name), fentrazamide (fentrazamide / generic name), butenachlor / butenachlor ), ACN (generic name), benzobicyclone / Experiment name), benfresate (benfuresate / generic name), symmethillin (cimmethylin / generic name), simazine (simazine / generic name), diclobenzyl (dichrobenil / generic name), diuron (diuron / generic name), chloroIPC (chlorpropham / Generic name), atrazine (atrazine / generic name), arachlor (alachlor / generic name), isouron (isouron / generic name), chlorphthalim (chlorphtalim / generic name), cyanazine (cyanazin / generic name), trifluralin / trifluralin / generic Name), butamifos (common name), propyzamide (propyzamide / common name), promethrin (promethrin / one name) Generic name), pendimethalin (pendimethalin / generic name), metolachlor (metolachlor / generic name), metribuzin (metribuzin / generic name), linuron (linuron / generic name), renacil (lenacil / generic name), propanil (propanil) / Generic name), MCPA (generic name), ioxynil (ioxynil octanoate / generic name), ashram (asulam / generic name), quizalofop-ethyl (quizalofop-ethyl / generic name), propaxahopiz (propaquiizafop / generic name) , Quizalofop-tefuryl (common name), sethoxydim (sethoxydim / common name), thifensulfuron-methyl (thifens) ulfuron-methyl / generic name), fenoxaprop-ethyl / generic name, fenmedipham / phenmedipham / generic name, fluazihop-butyl / generic name, bentazone / bentazone / generic name ), SAP (bensulide / generic name), TCTP (chlorothal-dimethyl, tetrachlorothiophene / generic name), amiprofosmethyl (amiprophosmethyl / generic name), ametrine (ametryn / generic name), isoxaben / isoxaben (generic name) Bencarb (orbencarb / generic name), carbbutylate (karbutilate / generic name), dithiopyr ( ithiopyr / generic name, siduron (siduron / generic name), thiazafluron (thiazafluron / generic name), napropamide (napropamide / generic name), prodiamine (prodiamine / generic name), bethrosin (benefin / generic name), methyldimelone methyl dimethyl / generic name, 2,4-PA (generic name), MCPPA (generic name), flazasulfuron (flazasulfuron / generic name), metsulfuron-methyl (metsulfuron-methyl / generic name), imazaquin / imazaquin / generic Name), imazapyr (imazapyr / generic name), tetrapion (flupropanate / generic name), tebutiuron (tebuthiuron / generic name), broma (Bromacil / generic name), hexazinone (hexazinone / generic name), glyphosate ammonium salt (glyphosate-ammonium / generic name), glyphosate-isopropylamine salt (glyphosate-iso-propylammonium / generic name), glyphosate trimesium salt (glyphosate trimesium salt) trisium / generic name), glyphosate-sodium salt (glyphosate-sodium / common name), bialaphos (bialaphos / common name), glufosinate (glufosinate-ammonium / common name), and MCC (common name).
[0017]
Fungicides: acibenzolar (acibenzola / generic name), ampropylphos (ampropyfos / generic name), anilazine (anilazine / generic name), azaconazole (azaconazole / generic name), azoxystrobin (azoxystrobin / generic name), Benalaxyl (common name), benodanil (common name), benomyl (common name), benzamacryl (common name), binapacryl (common name), biphenyl (common name), biphenyl (common name) bitanolol / generic name, betoxazine (bethoxazine / generic name), bordeaux solution (bordeaux mixture / generic name), Blasticidin-S (common name), bromoconazole (common name), bupirimate (bupirimate / common name), butiobate (butiobate / common name), calcium polysulfide (calcium polysulfide / common name) Captafol (captafol / generic name), captan (captan / generic name), kappa oxychloride (copper oxychloride / generic name), carpropamide (carpropamid / generic name), carbendazine (carbendazim / generic name), carboxin (carboxin) / Generic name), quinomethionate (chinomethionat / generic name), clobenzaiazone (chrobe) thiazole / generic name), chlorphenazole (chlorenezol / generic name), chloroneb (chloroneb / generic name), chlorothalonil (chlorothalonil / generic name), clozolinate (chlorozolinate / generic name), kufuraneb (cufraneb / generic name), sifraneb cymoxanil / generic name, cyproconazol / generic name, cyprodinil / cyprodinil / generic name, cyprofuram / cyprofuram / generic name, debacarb / generic name, dichlorophen, dichlorophen / generic name Robutrazol (diclobutrazol / common name), diclofuranide (dichllofluanid / common name) ), Diclomedine (diclomedine / generic name), dichlorane (dicloran / generic name), diethofencarb (diethofencarb / generic name), diclocymet (diclocymet / generic name), difenoconazole (generic name) Dimethirimol (generic name), dimethomorph (generic name), diniconazole (generic name), diniconazole-M (diconicazole-M / generic name), dinocap (dinocap / generic name), diphenylamine (diphineamine) ), Dipyrithione (generic name) Ditalimphos (ditalimfos / generic name), dithianon (dithianon / generic name), dodemorph (dodemorph / generic name), dozine (dodeine / generic name), drazoxolone (drazoxolon / generic name), edefenophos (edifenphos / epoxy), epoxy Nazole (epoxyconazole / generic name), etaconazole (etaconazole / generic name), etirimol (ethirimol / generic name), etridianol (etridiazole / generic name), famoxazone (famoxone / generic name), fenarimol (fenarimol / genericol / genericol) Nazole (febuconazole / generic name), fenfuram (fenfuram / generic name), fenpiclonil fenpiclonil / generic name, fenpropidin (fenpropidin / generic name), fenpropimorph (fenpropimorph / generic name), fentin (fentent / generic name), ferban (ferbam / generic name), ferimzone (ferimzone / generic name), Fluazinam (common name), fludioxonil (common name), fluoroimide (common name), fluquinconazole (common name), flusilazole (common name), flusulfamide , Flutolanil (common name), Flutriafol (common name) ), Folpetol (common name), fosetyl-aluminum (common name), fveridazole (fuberadizole / common name), furaxyl (fullaxyl / common name), phenamidone (fenamidone / common name), fenhexamide (Fenhexamid / generic name), guazatine (guazatine / generic name), hexachlorobenzene (hexachlorobenzene / generic name), hexaconazole (hexaconazole / generic name), himexazole (hymezazole / generic name), imazalil (general name / imazalil / general name) Imibenconazole (generic name), iminoctadine (generic name) Ipconazole (generic name), iprobenfos (generic name), iprodione (iprodione / generic name), isoprothiolane (isoprothiolane / generic name), iprovalicarb (iprovalicb / generic name), kasugamycin / kasugamycin Methyl (kresoxim-methyl / generic name), mancopper (mancopper / generic name), manzeb (mancozeb / generic name), maneb (maneb / generic name), mepanipyrim (mepanipyrim / generic name), mepronil (mepronil / generic name) , Metalaxyl (metalaxyl / generic name), metconazole (metconazole / generic name), Ram (metiram / generic name), methinostrobin (generic name), microbutanil (generic name), nabam (nabam / generic name), nickel bis (dimethyldithiocarbamate) (nickel bis / dimethyldithiocarba name) ), Nitrotar-isopropyl (nitro-isopropyl / generic name), nuarimol (nuarimol / generic name), octillinone (octililine / generic name), offrace (ofurace / generic name), oxadixyl (oxadixyl / generic name), oxycarboxine (Oxycarboxin / generic name), oxpoconazole fumarate (oxpoconazole fumarate) ate / generic name), pefurazoate (generic name), penconazole (penconazole / generic name), pencyclone (pencycuron / generic name), phthalide (phthalide / generic name), piperaline (piperalin / generic name), polyoxin (polyxin) Generic name), probenazole (probenazole / generic name), prochloraz (prochloraz / generic name), procymidone (procymidone / generic name), propamocarb hydrochloride (propamocarb hydrochloride / generic name), propiconazole (propiconazole, propiconazole, propiconazole, propiconazole (propiconazole) (Propineb / generic name), pyrazophos (pyrazophos / generic name), pyrife (Pyrifenox / generic name), pyrimethanil (pyrimethanil / generic name), pyroquilon (pyroquilon / generic name), quinoxyfen (quinoxyfen / generic name), quintozene (quintogene / generic name), sulfur (sulfur), spiroxamine (spiroxamine) Name), tebuconazole (generic name), technazene (generic name), tetraconazole (tetraconazole / generic name), thiabendazole (generic name), thifluzamide (generic name) -Methyl / generic name), thiram (thiram / generic name), tolkro S-methyl (tolclofos-methyl / common name), tolylfuranide (tolylfluanid / common name), triadimefon (triadimefon / common name), triazimenol (triadimenol / common name), triazoxide (triazoxide / common name), tricyclide (Generic name), tridemorph (generic name), triflumizole (triflumizole / generic name), triforine (triforine / generic name), triticonazole (triticonazole / generic name), validamycin (validamicin / generic name), vinclozolin vinclozolin / generic name, zineb (zineb / generic name), ziram (ziram / generic name) Name) and oxine-copper (common name).
[0018]
Bactericides: streptomycin (generic name), oxytetracycline (generic name), oxolinic acid (generic name) and the like.
[0019]
Nematicides: aldoxycarb (aldoxycarb / generic name), fostiazate (fosthiazate / generic name), fostietane (fosthietan / generic name), oxamil (oxamyl / generic name), fenamiphos (fenamiphos / generic name) and the like. .
[0020]
Acaricides: amitraz (common name), bromopropylate (common name), chinomethionate (chinomethionate / common name), chlorobenzylate (common name), clofentezine (common name), Cyhexatin (generic name), dicofol (generic name), dienochlor (generic name), etoxazole (etoxazole / generic name), fenazaquin (fenazaquin / generic name), fenbutatin oxide (fenbutatein generic name) ), Fenpropatrin (generic name), fenproximate (fenpromate) ximate / generic name), halfphenprox / generic name, hexthiazox / generic name, milbemectin (milbemectin / generic name), propargite (propargite / generic name), pyridaben / generic name , Pyrimidifen (generic name) and tebufenpyrad (generic name), and the like.
[0021]
Insecticides: abamectin (abamectin / generic name), acephate (acephate / generic name), acetamipiride (acetamipirid / generic name), azinphos-methyl (azinphos-methyl / generic name), bendicarb (generic name) / General name), bensultap (generic name), bifenthrin (bifenthrin / generic name), buprofezin (buprofezin / generic name), butocarboxine (butcarbboxim / generic name), carbaryl (carbaryl / generic name), carbofuran (carbarfuran) / Generic name), carbosulfan / generic name, cartap / Generic name), chlorfenapyr (chlorfenapyr / generic name), chlorpyrifos (chlorpyrifos / generic name), chlorfenvinphos (chlorfenvinphos / generic name), chlorfluazuron (chlorfluazuron / generic name), clothianidin (clothianin, common name) Chromafenozide (common name), clopyrifos-methyl (common name), cyfluthrin (cyfluthrin / common name), beta-cyfluthrin (beta-cyfluthrin / common name), cypermethrin (cypermethrin, cypermethrin, cypermethrin) (Cyromazine / generic name), cyhalothrin (cyhalothrin / Generic name), lambda-cyhalothrin (common name), deltamethrin (deltamethrin / common name), diafenthiuron (diafenthiuron / common name), diazinon (diazinon / common name), diacloden (common name) Diflubenzuron (common name), dimethylvinphos (common name), diphenolane (common name), disulfotone (common name), dimethoate (common name), phenate, phenate / Generic name), ethiofencarb (generic name), ethipro (Ethiprole / generic name), etofenprox (etofenprox / generic name), etrimphos (etrimfos / generic name), fenitrothion (fenitrothion / generic name), fenobcarb (fenocarb / generic name), phenoxycarb / generic name Fenpropatrin (general name), fenvalerate (general name), fipronil (fipronil / generic name), flucitrinate (flucythrinate / generic name), flufenoxuron (flufenoxuron / generic name), flufen Prox (flufenprox / generic name), tau-fluvalinate (tau-fluvalinate / generic name), Nophos (fophophos / generic name), formetanate (formemate / generic name), formothion (formothion / generic name), furatiothiocarb (furathiocarb / generic name), halofenozide (halofenozide / generic name), hexaflumuron (hexaflumuron) ), Hydramethylnonon / generic name, imidacloprid / generic name, isofenphos / isofenphos / generic name, indoxacarb (indoxacarb / generic name), isoprocarb / isoprothone / isoxathion Generic name), lufenuron (generic name), malathion (mal) thion / generic name), metaldehyde (metaldehyde / generic name), methamidophos / generic name, methidathion (methidathion / generic name), methacrylphos (methaclifos / generic name), metalcarb (metalcarb / methomil, mesomil) (Generic name), mesoprene (methoprene / generic name), methoxychlor (methoxychlor / generic name), methoxyphenozide (methoxyfenozide / generic name), monocrotophos (generic name), muscarule (muscalure / generic name), nitenpyram Generic name), omethoate (generic name), oxydemetone Methyl (oxydemethon-methyl / common name), oxamyl (oxamyl / common name), parathion (parathion / common name), parathion-methyl (parathion-methyl / common name), permethrin (permethrin / common name), phenthoate Generic name), phoxim (phoxim / generic name), pholate (phorate / generic name), hosalon (phosalone / generic name), phosmet (phosmet / generic name), phosphamidon (phosphamidon / generic name), pirimicarb / generic name ), Pirimiphos-methyl (common name), profenofos (common name), pymetrozine ( ymetrozine / generic name, pyraclofos (pyraclofos / generic name), pyriproxyfen (pyriproxyfen / generic name), rotenone (rotenone / generic name), sulprofos (sulprofos / generic name), silafluofen (silafluofen / generic name), spinosad / generic name), sulfotep (sulfotep / generic name), tebufenozide (tebfenozide / generic name), teflubenzuron (teflubenzuron / generic name), tefluthrin (tefluthorin / generic name), terbufos (terbufos / chlorophos / tetraphos chloro phos) (Tetrachlorvinphos / common name), thiodicarb (common name), thiame Thisumoxam / generic name, thiophanox / generic name, thiomethon / thiometon / generic name, tolfenpyrad / generic name, tralomethrin / generic name, trichlorfon / generic name Examples include triazuron (common name), triflumuron (common name), and bamidothion (common name).
[0022]
The content of the pesticidal active ingredient in the particulate wettable powder of the present invention is preferably from 1 to 90% by mass, more preferably from 1 to 60% by mass.
[0023]
The granular wettable powder of the present invention is preferably a bisphenolsulfonic acid formalin condensate, a naphthalenesulfonic acid formalin condensate, an alkylnaphthalenesulfonic acid formalin condensate, or lignin sulfone in order to further improve the disintegration and dispersion stability in water. One or more dispersants selected from acids, kraft lignin sulfonic acids, and alkali metal salts, alkaline earth metal salts, ammonium salts and amine salts thereof can be used. Representative examples include Vizpers P-121, Vizpers P-125, Vizpers P-215, Vaniol HDL-100, Vaniol HDL-200, Vaniol 205, Vaniol 206, Vaniol NDP-100, Vaniol ODP, Sun Extract P201, Sun Extract P201 Extract P321, Sun Extract P252, Sun Extract SCP, Vanirex HW, Vanirex N, Vanirex RN, Pearl Rex CP, Pearl Rex NP, Pearl Rex DP (Nippon Paper Industries), Demol N, Demol RN, Demol SN-B (Kao) Co., Ltd.), REAX85A, REAX83A, Kraft Sparse DD-5, Kraft Sparse DD-8, Kraft Sparse DW-5, Kraft Sparse DW-8 (West Baco), UFOXANE 3A (Borega) De Co., Ltd.), New Kargen WG-1 (Takemoto Oil & Fat Co., Ltd.), which is sold under the trade names such as Lunox 1000C (Toho Chemical Co., Ltd.) and SUPRAGIL RM / 210-EI (Rhodia).
[0024]
The content of the above dispersant with respect to the particulate wettable powder of the present invention is preferably 1 to 30% by mass, and more preferably 3 to 25% by mass. Dispersion stability in water becomes better with an addition amount of 1% by mass or more, and disintegration in water becomes better with an addition amount of 30% by mass or less.
[0025]
Table 1 shows desirable combinations of the polyoxyethylene alkylaryl ether hydroxysulfonic acid or a salt thereof (b) of the present invention and the dispersant (c).
[0026]
[Table 1]

[0027]
The particulate water-dispersible powder of the present invention may contain other surfactants as necessary. Other surfactants include the following (A), (B), (C), (D) and (E).
[0028]
(A) Nonionic surfactant:
(A-1) Polyethylene glycol type surfactant: for example, polyoxyethylene alkyl (C _12-18 ) ether, ethylene oxide adduct of alkyl naphthol, polyoxyethylene (mono or di) alkyl (C _8-12 ) phenyl Ether, formalin condensate of polyoxyethylene (mono or di) alkyl ( _C8-12 ) phenyl ether, polyoxyethylene (mono, di or tri) phenyl phenyl ether, polyoxyethylene (mono, di or tri) benzyl phenyl Ether, polyoxypropylene (mono, di or tri) benzyl phenyl ether, polyoxyethylene (mono, di or tri) styryl phenyl ether, polyoxypropylene (mono, di or tri) styryl phenyl ether, polyoxy Styrene (mono-, di- or tri-) styryl phenyl ether polymer, polyoxyethylene polyoxypropylene block polymers, alkyl _{(C 12 to 18)} polyoxyethylene polyoxypropylene block polymer ethers, alkyl _{(C 8 to 12)} phenyl polyoxyethylene Ethylene polyoxypropylene block polymer ether, polyoxyethylene bisphenyl ether, polyoxyethylene resin acid ester, polyoxyethylene fatty acid ( _C12-18 ) monoester, polyoxyethylene fatty acid ( _C12-18 ) diester, polyoxyethylene sorbitan fatty acid (C _{12 to 18)} ester, glycerol fatty acid ester ethylene oxide adducts, castor oil ethylene oxide adduct, hydrogenated castor oil ethylene oxide Addendum, alkyl _{(C 12 to 18)} amine ethylene oxide adduct and a fatty acid _{(C 12 to 18)} amide ethylene oxide adducts.
[0029]
(A-2) Polyhydric alcohol type surfactants: for example, glycerol fatty acid ester, polyglycerin fatty acid ester, pentaerythritol fatty acid ester, sorbitol fatty acid (C _12-18 ) ester, sorbitan fatty acid (C _12-18 ) ester, Examples include sugar fatty acid esters, polyhydric alcohol alkyl ethers, and fatty acid alkanolamides.
[0030]
(A-3) Acetylene-based surfactant: Examples include acetylene glycol, acetylene alcohol, ethylene oxide adduct of acetylene glycol, and ethylene oxide adduct of acetylene alcohol.
[0031]
(A-4) Other surfactants: Examples include alkyl glycosides.
[0032]
(B) anionic surfactant:
(B-1) Carboxylic acid type surfactants: for example, polyacrylic acid, polymethacrylic acid, polymaleic acid, copolymers of maleic acid and olefins (eg, isobutylene and diisobutylene), and acrylic acid and itaconic acid Copolymer, copolymer of methacrylic acid and itaconic acid, copolymer of maleic acid and styrene, copolymer of acrylic acid and methacrylic acid, copolymer of acrylic acid and methyl acrylate, acrylic acid And vinyl acetate; copolymers of acrylic acid and maleic acid; N-methyl-fatty acid ( _C12-18 ) sarcosinate; carboxylic acids such as resin acids and fatty acids ( _C12-18 ); Acid salts.
[0033]
(B-2) Sulfate ester type surfactant: For example, alkyl (C _12-18 ) sulfate, polyoxyethylene alkyl (C _12-18 ) ether sulfate, polyoxyethylene (mono or di) alkyl (C ₈ ) _-12 ) Phenyl ether sulfate, polyoxyethylene (mono or di) alkyl ( _C8-12 ) phenyl ether polymer sulfate, polyoxyethylene (mono, di or tri) phenyl phenyl ether sulfate, polyoxyethylene (Mono, di or tri) benzyl phenyl ether sulfate, polyoxyethylene (mono, di or tri) styryl phenyl ether sulfate, polyoxyethylene (mono, di or tri) styryl phenyl ether polymer sulfate, polio Sulfate esters of shea polyoxypropylene block polymer, a sulfated oil, fatty acid ester sulfuric, salts of sulfuric acid esters, and their sulfates, such as sulfated fatty acids and sulfated olefins.
[0034]
(B-3) a sulfonic acid type surfactants: For example, paraffin _{(C 12 to 22)} sulfonic acid, alkyl _{(C 8 to 12)} benzene sulfonic acid, alkyl _{(C 8 to 12)} formalin condensate of benzenesulfonic acid, Formalin condensate of cresol sulfonic acid, α-olefin (C _14-16 ) sulfonic acid, dialkyl (C _8-12 ) sulfosuccinic acid, polyoxyethylene (mono or di) alkyl (C _8-12 ) phenyl ether sulfonic acid, Polyoxyethylene alkyl (C _12-18 ) ether sulfosuccinic acid half ester, naphthalene sulfonic acid, (mono or di) alkyl (C _1-6 ) naphthalene sulfonic acid, formalin condensate of creosote oil sulfonic acid, alkyl (C _{8 12)} diphenyl ether sulfonic acid, Igepon (Trade name), a sulfonic acid copolymer such as polystyrene sulfonic acid and styrene sulfonic acid and methacrylic acid, and salts thereof sulfonic acid.
[0035]
(B-4) Phosphate ester type surfactants: For example, alkyl (C _8-12 ) phosphate, polyoxyethylene alkyl (C _12-18 ) ether phosphate, polyoxyethylene (mono or di) alkyl (C ₈ ) _-12 ) Phenyl ether phosphate, polyoxyethylene (mono, di or tri) alkyl ( _C8-12 ) phenyl ether polymer phosphate, polyoxyethylene (mono, di or tri) phenyl phenyl ether phosphate, polyoxyethylene (mono, di or tri) phenyl phenyl ether phosphate Oxyethylene (mono, di or tri) benzyl phenyl ether phosphate, polyoxyethylene (mono, di or tri) styryl phenyl ether phosphate, polymer phosphate of polyoxyethylene (mono, di or tri) styryl phenyl ether, Po Polyoxypropylene block phosphate ester of the polymer, phosphatidylcholine, phosphoric acid esters, such as phosphatidylethanolamine imine and condensation phosphoric acid (e.g., tripolyphosphate, etc.), and salts of these phosphate esters.
[0036]
Examples of the salt in the above (B-1) to (B-4) include alkali metals (such as lithium, sodium and potassium), alkaline earth metals (such as calcium and magnesium), ammonium and various amines (eg, alkylamine, cycloalkyl, and the like). Alkylamine and alkanolamine).
[0037]
(C) Cationic surfactant:
For example, an alkylamine salt and an alkyl quaternary ammonium salt can be mentioned.
[0038]
(D) amphoteric surfactant:
For example, a betaine type surfactant, an amino acid type surfactant and the like can be mentioned.
[0039]
(E) Other surfactants:
For example, a silicone-based surfactant, a fluorine-based surfactant, and the like can be given.
[0040]
The granular wettable powder of the present invention may contain a mineral powder or a water-soluble powder as an extender, if necessary. Diatomaceous earth, talc, clay, bentonite, calcium carbonate and the like are used as the mineral powder. Sugars, urea, various salts, and the like are used as the water-soluble powder. The saccharides include lactose, fructose, glucose, and the like, and the salts include alkali metal salts and ammonium salts of sulfuric acid, phosphoric acid, hydrochloric acid, nitric acid, or carbonic acid. These extenders may be used alone or as a mixture of two or more.
[0041]
In addition, if necessary, a binder, a grinding aid (for example, white carbon, diatomaceous earth, a fatty acid and a phosphoric acid ester, etc.), an absorbent, a decomposition inhibitor, a coloring agent or an antifoaming agent are added as other auxiliary agents. May be.
[0042]
The granular wettable powder of the present invention is produced by the following method. That is, as a first production method, (a) and (b) are added, if necessary, to (c), other surfactants, extenders and other auxiliaries and uniformly mixed. Finely pulverize. The fine pulverization can be carried out by a dry pulverizer such as an impact pulverizer, a ball mill and a jet-omizer. Next, if necessary, (b), (c), other surfactants, extenders and other auxiliaries are added to the obtained fine powder in an appropriate amount and mixed, and after adding an appropriate amount of water and kneading, Granulate using a granulator and dry to obtain the desired product. Granulation can be performed by a granulator such as an extrusion granulator, a press granulator, a fluidized bed granulator, a stirring granulator or a tumbling granulator.
[0043]
In the second production method, (a) and (b) are added to an appropriate amount of water, and if necessary, (c), other surfactants, extenders, and other auxiliaries are further added. And pulverize with a wet pulverizer. The fine pulverization can be performed by a wet pulverizer such as a ball mill and a sand grinder. Next, if necessary, (b), (c), other surfactants, extenders and other auxiliaries are added to the obtained aqueous suspension in an appropriate amount and mixed. The desired product can be obtained by spray drying.
[0044]
As a third production method, (a) and (b) are added to an appropriate amount of water, and if necessary, (c), other surfactants, extenders and other auxiliaries are further added, Finely pulverize with a wet pulverizer. The fine pulverization can be performed by a wet pulverizer such as a ball mill and a sand grinder. Next, a bulking agent is added to the obtained aqueous suspension, and if necessary, (b), (c), other surfactants and other auxiliaries are added in appropriate amounts, mixed and kneaded to form a paste. After that, the mixture is granulated using a granulator and dried to obtain a target product. Granulation can be performed by a granulator such as an extrusion granulator, a press granulator, a fluidized bed granulator, a stirring granulator, and a tumbling granulator.
[0045]
The particle size of the particulate water-dispersible powder of the present invention is not particularly limited, but is usually preferably about 0.1 to 2 mm.
[0046]
【Example】
Next, specific examples of the present invention will be described, but the present invention is not limited to these examples. All parts are parts by mass.
[0047]
Example 1 54 parts of pyridaben (generic name), 17 parts of sodium ligninsulfonate, and 27 parts of ammonium sulfate were finely pulverized by a jet-omizer (manufactured by Seishin Enterprise). 98 parts of this finely pulverized material, 2 parts of sodium polyoxyethylene alkylaryl ether hydroxysulfonate and 25 parts of water were added and mixed, and then granulated using an extrusion granulator equipped with a screen having a diameter of 0.5 mm. did. After drying at 50 ° C, the granules were sieved with a sieve of 20 to 50 mesh to obtain a granular wettable powder of the present invention.
[0048]
Example 2 54 parts of pyridaben (generic name), 5 parts of sodium salt of alkylnaphthalenesulfonic acid formalin condensate, 14 parts of a mixture of sodium salt of ligninsulfonic acid and sodium salt of naphthalenesulfonic acid formalin condensate, and 25 parts of ammonium sulfate Finely pulverized with a miser (manufactured by Seishin Enterprise). 98 parts of this finely pulverized material, 2 parts of sodium polyoxyethylene alkylaryl ether hydroxysulfonate and 25 parts of water were added and mixed, and then granulated using an extrusion granulator equipped with a screen having a diameter of 0.5 mm. did. After drying at 50 ° C, the granules were sieved with a sieve of 20 to 50 mesh to obtain a granular wettable powder of the present invention.
[0049]
[Example 3] 54 parts of pyridaben (common name), 25 parts of sodium salt of bisphenolsulfonic acid condensate, and 19 parts of ammonium sulfate were finely pulverized with a jet-omizer (manufactured by Seishin Enterprise). 98 parts of this finely pulverized product, 2 parts of sodium polyoxyethylene alkylaryl ether hydroxysulfonate and 40 parts of water were added and mixed, and then granulated using an extrusion granulator equipped with a screen having a diameter of 0.5 mm. did. After drying at 50 ° C, the granules were sieved with a sieve of 20 to 50 mesh to obtain a granular wettable powder of the present invention.
[0050]
Example 4 54 parts of quizalofop butyl (generic name), 7 parts of sodium ligninsulfonate, 10 parts of sodium salt of alkylnaphthalenesulfonic acid formalin condensate, and 27 parts of ammonium sulfate were finely treated with a jet-omizer (manufactured by Seishin Enterprise). Crushed. 98 parts of this finely pulverized product, 2 parts of sodium polyoxyethylene alkylaryl ether hydroxysulfonate and 35 parts of water were added and mixed, and then granulated using an extrusion granulator equipped with a screen having a diameter of 0.5 mm. did. After drying at 50 ° C, the granules were sieved with a sieve of 20 to 50 mesh to obtain a granular wettable powder of the present invention.
[0051]
Example 5 54 parts of quizalofop butyl (generic name), 20 parts of sodium salt of bisphenolsulfonic acid condensate, and 24 parts of ammonium sulfate were finely pulverized with a jet oimizer (manufactured by Seishin Enterprise). 98 parts of this finely pulverized product, 2 parts of sodium polyoxyethylene alkylaryl ether hydroxysulfonate and 35 parts of water were added and mixed, and then granulated using an extrusion granulator equipped with a screen having a diameter of 0.5 mm. did. After drying at 50 ° C, the granules were sieved with a sieve of 20 to 50 mesh to obtain a granular wettable powder of the present invention.
[0052]
[Example 6] 54 parts of quizalofop butyl (generic name), 8 parts of sodium salt of alkylnaphthalenesulfonic acid formalin condensate, 11 parts of a mixture of sodium salt of ligninsulfonic acid and sodium salt of naphthalenesulfonic acid formalin condensate, 25 parts of ammonium sulfate Was finely pulverized with a Jet Omizer (manufactured by Seishin Enterprise). 98 parts of this pulverized material, 2 parts of sodium polyoxyethylene alkylaryl ether hydroxysulfonate and 30 parts of water were added and mixed, and then granulated using an extrusion granulator equipped with a screen having a diameter of 0.5 mm. did. After drying at 50 ° C, the granules were sieved with a sieve of 20 to 50 mesh to obtain a granular wettable powder of the present invention.
[0053]
[Example 7] 53 parts of pyrazosulfuron-ethyl (generic name), 7 parts of sodium salt of bisphenolsulfonic acid condensate, 7 parts of ligninsulfonic acid sodium salt, 20 parts of ammonium sulfate, and 11 parts of clay were jet-omized (manufactured by Seishin Enterprise). And pulverized. 98 parts of this finely pulverized material, 2 parts of sodium polyoxyethylene alkylaryl ether hydroxysulfonate and 15 parts of water were added and mixed, and then granulated using an extrusion granulator equipped with a screen having a diameter of 0.5 mm. did. After drying at 50 ° C, the granules were sieved with a sieve of 20 to 50 mesh to obtain a granular wettable powder of the present invention.
[0054]
Example 8 Pyrazosulfuronethyl (generic name) 53 parts, alkylnaphthalenesulfonic acid formalin condensate sodium salt 10 parts, ligninsulfonic acid sodium salt and naphthalenesulfonic acid formalin condensate sodium salt 7 parts, ammonium sulfate 20 parts And 7 parts of the clay were finely pulverized with a jet-omizer (manufactured by Seishin Enterprise). 98 parts of this finely pulverized material, 2 parts of sodium polyoxyethylene alkylaryl ether hydroxysulfonate and 15 parts of water were added and mixed, and then granulated using an extrusion granulator equipped with a screen having a diameter of 0.5 mm. did. After drying at 50 ° C, the granules were sieved with a sieve of 20 to 50 mesh to obtain a granular wettable powder of the present invention.
[0055]
[Comparative Example 1] The procedure of Example 1 was repeated, except that 2 parts of polyoxyethylene alkylaryl ether hydroxysulfonate sodium salt was replaced with 2 parts of polyoxyethylene alkyl phenyl ether ammonium sulfate. Thus, a granular wettable powder was obtained.
[0056]
[Comparative Example 2] The procedure of Example 2 was repeated, except that 2 parts of polyoxyethylene alkyl aryl ether hydroxysulfonate sodium salt was replaced with 2 parts of ammonium polyoxyethylene alkyl phenyl ether sulfate. Thus, a granular wettable powder was obtained.
[0057]
Comparative Example 3 The procedure of Example 4 was repeated, except that 2 parts of polyoxyethylene alkylaryl ether hydroxysulfonate sodium salt was replaced with 2 parts of ammonium polyoxyethylene alkylphenyl ether sulfate. Thus, a granular wettable powder was obtained.
[0058]
[Comparative Example 4] The procedure of Example 5 was repeated, except that 2 parts of polyoxyethylene alkylaryl ether hydroxysulfonate sodium salt was replaced by 2 parts of ammonium polyoxyethylene alkylphenyl ether sulfate. Thus, a granular wettable powder was obtained.
[0059]
Comparative Example 5 The procedure of Example 7 was repeated, except that 2 parts of polyoxyethylene alkylaryl ether hydroxysulfonate sodium salt was replaced with 2 parts of ammonium polyoxyethylene alkylphenyl ether sulfate. Thus, a granular wettable powder was obtained.
[0060]
Dispersion stability tests were performed on the preparations obtained from the examples and comparative examples by the following method.
[0061]
[Test Example 1] Dispersion stability of high-concentration water diluent (suspension) 1.0 g of each of the granular wettable powders produced in Examples and Comparative Examples was weighed. The weighed sample is put into a 10 ml graduated cylinder equipped with a stopper and containing 10 ml of 10-degree hard water placed in a constant temperature water bath at 10 ° C. The graduated cylinder is inverted 30 times at a pace of once every 2 seconds to dilute with water. A liquid (suspension) was prepared. The amount of the separation layer and the amount of sediment in the water diluent after 2 hours from the water diluent were read from the memory of the measuring cylinder. Table 2 shows the results.
[0062]
[Table 2]

[0063]
As shown in Table 2, the granular wettable powder of the present invention was superior to the granular wettable powder of Comparative Example in the dispersion stability of the high-concentration water diluent.
[0064]
【The invention's effect】
The granular wettable powder of the present invention has good disintegration in water at the time of dilution with water regardless of the kind of the pesticidal active ingredient, and has good pesticidal active ingredient fine particles in the water diluent regardless of the elapse of time. Shows dispersion stability. Furthermore, even if the amount of dilution water is extremely small, that is, even if the concentration of the pesticidal active ingredient in the water dilution is extremely high, good disintegration and dispersion stability in water can be obtained.

Claims (7)

A granular wettable powder containing the following (a) and (b):
(A) one or more pesticidal active ingredients (b) polyoxyethylene alkylaryl ether hydroxysulfonic acid or an alkali metal salt, alkaline earth metal salt, ammonium salt or amine salt thereof A particulate wettable powder containing the following (a), (b) and (c).
(A) one or more pesticidal active ingredients (b) polyoxyethylene alkylaryl ether hydroxysulfonic acid or an alkali metal salt, alkaline earth metal salt, ammonium salt or amine salt thereof (c) bisphenolsulfonic acid formalin condensation Selected from the group consisting of a product, a naphthalenesulfonic acid formalin condensate, an alkylnaphthalenesulfonic acid formalin condensate, ligninsulfonic acid, kraft ligninsulfonic acid, and alkali metal salts, alkaline earth metal salts, ammonium salts and amine salts thereof. Seed or two or more dispersants The granular wettable powder according to claim 1 or 2, wherein the content of (b) with respect to the granular wettable powder is 0.1 to 10% by mass. The granular wettable powder according to claim 2 or 3, wherein the content of (c) relative to the granular wettable powder is 1 to 30% by mass. The granular wettable powder according to any one of claims 1 to 4, wherein the content of (a) with respect to the granular wettable powder is 1 to 90% by mass. The granular wettable powder according to any one of claims 1 to 5, wherein the granular wettable powder is a granular wettable powder for spraying with water. A method of spraying the particulate wettable powder according to any one of claims 1 to 5 after diluting with water.