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1. 发明申请

WO1997007879A1 APPARATUS AND PROCESS FOR COATING A SOLID PARTICLE 审中-公开
标题翻译：用于涂覆固体颗粒的装置和方法
公开(公告)号：WO1997007879A1
公开(公告)日：1997-03-06
申请号：PCT/US1996013582
申请日：1996-08-21
申请人： E.I. DU PONT DE NEMOURS AND COMPANY , SCHURR, George, Alan
发明人： E.I. DU PONT DE NEMOURS AND COMPANY
IPC分类号： B01J02/00
CPC分类号： B01J2/006
摘要： The process and apparatus of the present invention coat a solid particle by metering a liquid composition comprising a coating material, where the liquid composition is either a solution, a slurry or a melt, into a flow restrictor and injecting a gas stream through the flow restrictor concurrently with the metering of the liquid composition to create a zone of turbulence at the outlet of the flow restrictor, thereby atomizing the liquid composition. The gas stream is heated prior to injecting it through the flow restrictor. A solid particle is added to the zone of turbulence concurrently with the metering of the liquid composition and the injection of the heated gas to mix the solid particle with the atomized liquid composition. The mixing at the zone of turbulence coats the solid particle with the coating material. If the liquid composition is a melt, then the solid particle is coated with the melt. If the liquid composition is either a solution or a slurry, the solid particle is coated with either the dissolved or the undissolved solid of the liquid composition. This apparatus and process provide a short residence time, i.e., less than 250 milli-seconds, in the zone of turbulence, which reduces the time and thus the cost of coating particles. In addition, this process and apparatus provide a mechanism for coating very small or powdery or granular particles which results in a high yield of entirely coated, non-agglomerated particles.
摘要翻译：本发明的方法和装置通过将液体组合物（其中液体组合物为溶液，浆料或熔体）计量到包含流动限制器的液体组合物中，并将气体流通过限流器与液体组合物的计量同时在限流器的出口处产生湍流区，从而使液体组合物雾化。气流在通过限流器注入之前被加热。将固体颗粒与液体组合物的计量同时加入湍流区域，并注入加热的气体以将固体颗粒与雾化液体组合物混合。在湍流区域的混合涂覆固体颗粒与涂层材料。如果液体组合物是熔体，则固体颗粒被熔体涂覆。如果液体组合物是溶液或浆液，则固体颗粒用液体组合物的溶解或未溶解的固体涂覆。该装置和方法在湍流区域中提供短的停留时间，即小于250毫秒，这减少了涂覆颗粒的时间并因此减少了成本。此外，该方法和设备提供了一种用于涂覆非常小或粉末状或粒状颗粒的机理，其导致完全涂覆的非团聚颗粒的高产率。

2. 发明申请

WO1997007676A1 CROP PROTECTION COMPOSITION COMPRISING A CROP PROTECTION SOLID PARTICLE COATED WITH A WATER-INSOLUBLE COATING MATERIAL AND A CROP PROTECTION MIXTURE COMPRISING THE SAME 审中-公开
标题翻译：包含防水固体颗粒的防水组合物，其用水不溶性涂料和包含其的作物保护混合物
公开(公告)号：WO1997007676A1
公开(公告)日：1997-03-06
申请号：PCT/US1996013677
申请日：1996-08-23
申请人： E.I. DU PONT DE NEMOURS AND COMPANY , WYSONG, Robert, David , BEESTMAN, George, Bernard , SCHURR, George, Alan
发明人： E.I. DU PONT DE NEMOURS AND COMPANY
IPC分类号： A01N25/26
CPC分类号： A01N25/28 , A01N25/26 , A01N47/36 , B01J2/006 , Y10S514/963 , A01N39/04 , A01N57/14 , A01N2300/00
摘要： A composition comprising a mononucleate solid crop protection particle coated with a water-insoluble coating material has a diameter in the range of 0.5 to 50 mu . This composition is made by a process which results in substantial non-agglomeration of the coated particles. In a particular embodiment, a crop protection composition comprises a mononucleate solid crop protection particle coated with either wood rosin, rosin derivatives, waxes, fatty derivatives, sterols, long-chain sterol esters and sulfur. Alternatively, the coating material may be a water-insoluble synthetic latex polymer. The composition may be used in a mixture which also includes a crop protection chemical partner comprising a solid particle. The partner ordinarily degrades the solid crop protection particle when stored or aged together as a solid particle mixture. However, when the composition solid particle is coated, this degradation is prevented.
摘要翻译：包含涂覆有水不溶性涂层材料的单核固体作物保护颗粒的组合物的直径在0.5至50μm的范围内。该组合物通过导致涂覆颗粒的基本非团聚的方法制备。在具体实施方案中，作物保护组合物包含用木松香，松香衍生物，蜡，脂肪衍生物，固醇，长链甾醇酯和硫磺涂覆的单核固体作物保护颗粒。或者，涂料可以是水不溶性合成胶乳聚合物。组合物可以以混合物的形式使用，该混合物还包括包含固体颗粒的作物保护化学配合物。当作为固体颗粒混合物储存或老化在一起时，伴侣通常会降解固体作物保护颗粒。然而，当组合物固体颗粒被涂覆时，防止了这种降解。

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