84030-86-4Relevant articles and documents
IMPROVED PROCESS FOR THE PREPARATION OF PYRETHROIDS
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Page/Page column 10; 11, (2018/04/13)
The present disclosure concerns a process for preparing a pyrethroid, said process comprising the steps of: a) reacting an acid chloride with an alcohol in a suitable organic solvent and in the presence of a nitrogen acid acceptor in a temperature range from 0°C to 40°C; and b) washing with water and/or an aqueous basic solution, wherein a suitable amount of a polyamine (W) H2N-(CH2)b-Ae-[(CH2)c-A-]p-(CH2)d-NH2, where A is -NH- or -O-, b and d are independently an integer in the range of 1 -5, c is an integer in the range of 2-5, e is an integer from 0 to 1, p is an integer in the range of 0-5, is added in step a) or b) or after step a) and before step b).
Insect pest control method
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, (2008/06/13)
PCT No. PCT/JP95/01568 Sec. 371 Date Feb. 10, 1997 Sec. 102(e) Date Feb. 10, 1997 PCT Filed Aug. 7, 1995 PCT Pub. No. WO96/04786 PCT Pub. Date Feb. 22, 1996Provided is a technique comprising blowing air onto a carrier having supported thereon a preparation containing a highly safe pesticidal component to vaporize and diffuse the component from the preparation under non-heating conditions thereby to control flying insect pests. An insect pest control method characterized by preparing a preparation-retaining material by supporting on a carrier a preparation containing a pesticidal component which is hard to vaporize at normal temperature, preferably at least one pesticidal component selected from compounds which are hard to vaporize at normal temperature and have a vapor pressure of lower than 1x10-3 mmHg and a boiling point of not lower than 120 DEG C./1 mmHg, setting the resulting preparation-retaining material, and contacting the preparation with an air current raised by an air blowing means to release the component into the air under non-heating conditions, an apparatus suitable therefor, and a carrier to be used in the preparation-retaining material set in the apparatus characterized by not blocking the air current toward the vent hole of the apparatus are provided.