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1. 发明授权

US5866153A Process for the preparation of microcapsules 失效
标题翻译：微胶囊制备方法
公开(公告)号：US5866153A
公开(公告)日：1999-02-02
申请号：US512427
申请日：1995-08-08
申请人： Hans Walter Hasslin , Michael James Hopkinson
发明人： Hans Walter Hasslin , Michael James Hopkinson
IPC分类号： B01J13/16 , A01N25/34
CPC分类号： B01J13/16
摘要： The invention relates to a process for the preparation of an aqueous suspension of microcapsules having a capsule wall of polyurea and encapsulating a water-immiscible pesticide, by dispersing a solution of a polyisocyanate in the sparingly water-soluble pesticide in water and subsequently reacting the dispersion with a polyamine, which process comprises effecting the dispersion of the solution of the polyisocyanate in the sparingly water-soluble pesticide in water and the subsequent reaction of the dispersion with the polyamine in the presence of at least one water-soluble or water-dispersible nonionic surfactant of a block copolymer having at least one hydrophobic block and at least one hydrophilic block.
摘要翻译：本发明涉及一种制备具有聚脲胶囊壁并包封水不混溶农药的微胶囊的水性悬浮液的方法，通过将多异氰酸酯的溶液分散在微水溶性农药中并随后使分散体与多胺反应，该方法包括使多异氰酸酯在少量水溶性农药中的溶液分散在水中，随后在至少一种水溶性或水分散性非离子表面活性剂存在下分散体与多胺的反应具有至少一个疏水嵌段和至少一个亲水嵌段的嵌段共聚物的表面活性剂。

2. 发明授权

US5837290A Process for the preparation of microcapsules 失效
公开(公告)号：US5837290A
公开(公告)日：1998-11-17
申请号：US464502
申请日：1995-06-05
申请人： Hans Walter Hasslin
发明人： Hans Walter Hasslin
IPC分类号： A01N25/28 , A01N43/30 , A01N43/653 , A01N57/16 , A01P7/00 , A01P13/00 , B01J13/16 , A61K9/14
CPC分类号： B01J13/16
摘要： The invention relates to a process for the preparation of an aqueous suspension of microcapsules having a capsule wall of polyurea and encapsulating a water-immiscible pesticide, by dispersing a solution of a polyisocyanate in the sparingly water-soluble pesticide in water and subsequently reacting the dispersion with a polyamine, which process comprises effecting the dispersion of the solution of the polyisocyanate in the sparingly water-soluble pesticide in water and the subsequent reaction of the dispersion with the polyamine in the presence of at least one water-soluble or water-dispersible nonionic surfactant of a block copolymer having at least one hydrophobic block and at least one hydrophilic block.

3. 发明授权

US5674514A Storage stable pesticidal aqueous emulsions 失效
标题翻译：储存稳定的农药水性乳液
公开(公告)号：US5674514A
公开(公告)日：1997-10-07
申请号：US105192
申请日：1993-08-09
申请人： Hans Walter Hasslin
发明人： Hans Walter Hasslin
IPC分类号： A01N25/04 , A01N25/06 , A01N25/10 , A01N25/30 , A01N43/30
CPC分类号： A01N25/04 , Y10S514/937
摘要： Aqueous emulsions are described comprising an organic phase of a substantially hydrophobic pesticide or mixture of pesticides which are liquid or dissolved in a hydrophobic solvent, and an aqueous phase comprising surfactants and/or dispersants, wherein a) the emulsion is in the form of an aqueous concentrate, and b) an emulsion-stabilizing amount of a polymer or polymer mixture is present which is more soluble in the organic phase than in the aqueous phase.
摘要翻译：描述了含水乳液，其包含液体或溶解在疏水溶剂中的基本上疏水的农药或农药混合物的有机相和包含表面活性剂和/或分散剂的水相，其中a）所述乳液为水性形式浓缩物，和b）存在乳液稳定量的聚合物或聚合物混合物，其在有机相中比在水相中更易溶。

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