发明名称 |
FREMGANGSMAADE TIL FREMSTILLING AF 5-AMINO-4-CHLORO-2-PHENYL-3(2H-)-PYRIDAZINON HERBICID INDEHOLDENDE SAMME SAMT FREMGANGSMAADE TIL SELEKTIV UDRYDDELSE AF UKRUDT I JORDBRUGSAFGROEDER |
摘要 |
The compound 5-amino-4-chloro-2-phenyl-3(2H)-pyridazinone free from 5-chloro-4-amino-2-phenyl-3(2H)-pyridazinone is used as selective weed-killer in a remarkably more efficacious and remarkably less phytotoxical way than the presently known "pyrazon" (mixture of 5-amino-4-chloro-2-phenyl-3(2H)-pyridazinone and 5-chloro-4-amino-2-phenyl-3(2H)-pyridazinone). The 5-amino-4-chloro-2-phenyl-3(2H)-pyridazinone is obtained from pyrazon by treating said pyrazon with a mineral acid of pre-fixed concentration, obtaining a suspension and filtering such a suspension. The use thereof as weed-killer is carried out in suitable formulations. |
申请公布号 |
DK264679(A) |
申请公布日期 |
1979.12.23 |
申请号 |
DK19790002646 |
申请日期 |
1979.06.22 |
申请人 |
OXON ITALIA S P A |
发明人 |
MOTTA R |
分类号 |
C07D237/22;A01N43/54;A01N43/58;C07D237/24;(IPC1-7):C07D/ |
主分类号 |
C07D237/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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