公开(公告)号：EP0506199A2

公开(公告)日：1992-09-30

申请号：EP92200865.1

申请日：1992-03-26

申请人： DOWELANCO

发明人： Pews, R. Garth ,  Gall, James A.

IPC分类号： C07C209/10 ,  C07C211/52

CPC分类号： C07C211/45 ,  C07C17/208 ,  C07C25/13 ,  C07C209/10

摘要： 2,6-Difluoroaniline is prepared from 1,2,3-trichlorobenzene by partial fluorine exchange to a mixture of 2,6-difluorochlorobenzene and 2,3-difluorochlorobenzene, selective reduction to a mixture of 2,6-difluorochlorobenzene and ortho -difluorobenzene, and amination to 2,6-difluoroaniline. The undesirable 2,3-difluorochlorobenzene is converted into valuable ortho -difluorobenzene and the 2,3-difluoroaniline isomer is avoided.

摘要翻译： 2,6-二氟苯胺由1,2,3-三氯苯通过部分氟交换制备成2,6-二氟氯苯和2,3-二氟氯苯的混合物，选择性还原为2,6-二氟氯苯和邻二氟苯的混合物 并胺化成2,6-二氟苯胺。 将不希望的2,3-二氟氯苯转化为有价值的邻二氟苯，避免了2,3-二氟苯胺异构体。

公开(公告)号：EP0479384A1

公开(公告)日：1992-04-08

申请号：EP91202557.4

申请日：1991-10-01

申请人： DOWELANCO

发明人： Wirth, David D.

IPC分类号： C07C209/84 ,  C07C211/52

CPC分类号： C07C209/84 ,  C07C211/52

摘要： The present invention is directed toward a process of treating crude dinitroaniline with an aqueous sulfite solution as a method of stabilizing the herbicide against formation of nitrosamines and of reducing impurities therein.

摘要翻译： 本发明指向治疗粗二硝基苯胺与亚解决wässrige作为和减少杂质在其中稳定针对形成亚硝胺的除草剂的方法的过程。

公开(公告)号：EP0374796A3

公开(公告)日：1992-03-04

申请号：EP89123389.2

申请日：1989-12-18

申请人： DOWELANCO

发明人： Wessling, Ritchie A. ,  Pickelman, Dale M. ,  Wujek, Dennis G.

IPC分类号： A01N25/30 ,  A01N25/10

CPC分类号： A01N25/30 ,  A01N25/10

摘要： Stable, aqueous emulsion formulations of water-­insoluble organic pesticides are formed from a mixture of (1) a water-insoluble organic pesticide, (2) a structured particle latex containing nonionic particles to which is bound a layer containing stabilizing pH independent ionic groups chemically bound at or near the surface of the polymer particles, and optionally a cosolvent and/or a cosurfactant for the pesticide. Uses of the formulations are also disclosed.

公开(公告)号：EP0357149A3

公开(公告)日：1992-03-04

申请号：EP89202201.3

申请日：1989-08-31

申请人： DowElanco

发明人： Wessling, Ritchie A. ,  Pickelman, Dale M. ,  Wujek, Dennis G.

IPC分类号： A01N25/30 ,  A01N25/10

CPC分类号： A01N25/10 ,  A01N25/30

摘要： Stable emulsion formulations of water-insoluble organic pesticides are prepared by commingling the pesticide with an aqueous dispersion of a graft copolymer comprised of a reactive polymeric surfactant (RPS) base polymer and a nonionic hydrophobic grafted composition whereby the surfactant on the surface is bound thereto by the graft chains to a particle which is an aggregate of the RPS graft and pesticide. The resulting product is more stable to coalescence than emulsions made with conventional or polymeric surfactants.

公开(公告)号：EP0450712A2

公开(公告)日：1991-10-09

申请号：EP91200718.4

申请日：1991-03-28

申请人： DOWELANCO

发明人： Markley, Lowell D. ,  Hamilton, Christopher T. ,  Swisher, Beth A. ,  Secor, Jacob

IPC分类号： C07D213/643 ,  C07D213/70 ,  C07D213/71 ,  A01N43/40

CPC分类号： C07D213/643 ,  A01N43/40 ,  C07D213/70

摘要： The present disclosure is directed to substituted cyclohexanedione compounds, the preparation of said compounds, compositions containing said compounds and the use of said compositions in the selective pre- and postemergent kill and control of grassy weeds in the presence of various crop plants.

摘要翻译： 本公开涉及取代的环己二酮化合物，所述化合物的制备，含有所述化合物的组合物以及所述组合物在各种作物植物存在下的选择性芽前和芽后杀死和控制草地杂草中的用途。

公开(公告)号：EP0441456A2

公开(公告)日：1991-08-14

申请号：EP91200274.8

申请日：1991-02-08

申请人： DOWELANCO

发明人： Krumel, Karl L. ,  Wilson, Charles A. ,  Hormel, Thad S.

IPC分类号： C01D3/06

CPC分类号： C01D3/06

摘要： Finely divided potassium chloride is removed from mixtures with polar, aprotic solvents, such as N-methyl-2-pyrrolidinone, by combining the mixture with sufficient water to dissolve a significant portion, but not all of the potassium chloride present, removing the added water by distillation, and subsequently separating the larger crystals of the salt that form by filtration or centrifugation.

摘要翻译： 通过将混合物与足够的水混合以溶解显着部分，但不是全部氯化钾存在，除去加入的水，从而与极性非质子溶剂如N-甲基-2-吡咯烷酮的混合物中除去细分的氯化钾 通过蒸馏，然后分离通过过滤或离心形成的较大的盐晶体。

公开(公告)号：EP0415498A3

公开(公告)日：1991-08-07

申请号：EP90202288

申请日：1990-08-27

申请人： DOWELANCO

发明人： FRIESE, DAVID D. ,  ELLEDGE, JERRY M.

IPC分类号： C07D213/26 ,  C07D213/61

CPC分类号： C07D213/61

公开(公告)号：EP0339964A3

公开(公告)日：1991-06-12

申请号：EP89304150.9

申请日：1989-04-26

申请人： DowElanco

发明人： Achgill, Ralph Kenneth ,  Call, Laurence Wesley

IPC分类号： C07C337/00

CPC分类号： C07C337/06

摘要： An improved method for preparing 4-methyl-3-­thiosemicarbazide, an intermediate of value in preparing certain herbicides, by reacting a methyldithiocarbamate quaternary ammonium salt of formula:
CH₃NH- -NHNH₂
which comprises reacting a methyldithiocarbamate quaternary ammonium salt of Formula (I):
wherein R is C₁-C₄ alkyl, with hydrazine.

公开(公告)号：EP0397281A2

公开(公告)日：1990-11-14

申请号：EP90201193.1

申请日：1990-05-11

申请人： DowElanco

发明人： Pews, Garth R.

IPC分类号： C07D213/64

CPC分类号： C07D213/64 ,  C07C255/19

摘要： A process for the preparation of 3,5,6-­trichloropyridin-2-ol from trichloroacetyl chloride and acrylonitrile is improved by separately conducting the individual addition, cyclization and aromatization steps. By separating these steps, water and HCl, which are by-products of the latter steps, can be precluded from interfering with the earlier steps. The individual process steps have also been improved.

摘要翻译： 通过分别进行单独的加成，环化和芳构化步骤，改进了由三氯乙酰氯和丙烯腈制备3,5,6-三氯吡啶-2-醇的方法。 通过分离这些步骤，作为后一步骤的副产物的水和HCl可以被排除在干扰前面的步骤之外。 各个工艺步骤也得到了改进。

公开(公告)号：EP0380264A2

公开(公告)日：1990-08-01

申请号：EP90300625.2

申请日：1990-01-22

申请人： DowElanco

发明人： Wright, Ian Glaisby

IPC分类号： C07D239/90 ,  C07D239/95 ,  C07D239/94 ,  C07D239/88

CPC分类号： C07D401/12 ,  C07D239/88 ,  C07D239/90 ,  C07D403/12 ,  C07D405/12 ,  C07D409/12 ,  C07D417/12 ,  C07F9/5463

摘要： A process for preparing nitrogen-containing heterocyclic compounds that are chloro or bromo substi­tuted at a ring position adjacent to the ring nitrogen atom which comprises reacting a hydroxy-substituted start­ing material with the kinetic form of a triphenylphosphite-­halogen complex.

摘要翻译： 一种制备在与环氮原子相邻的环位置上氯或溴取代的含氮杂环化合物的方法，其包括使羟基取代的原料与三苯基膦酸 - 卤素络合物的动力学形式反应。