159999-05-0Relevant academic research and scientific papers
Synthesis method of diafenthiuron impurities A and B
-
, (2021/08/06)
The invention provides a preparation method of the diafenthiuron impurities A and B. 2, 6-isopropylaniline, phenol, triphosgene, tert-butylamine and tert-butyl formamidine hydrochloride are used as raw materials, a material basis is provided for normatively researching the impurities, and the method can also be used for qualitative and quantitative analysis of the impurities in diafenthiuron production. And the impurities are controlled within a safe and reasonable limit range, so that the quality standard of the diafenthiuron can be improved, and important guiding significance is provided for safe medication of the masses.
Synthesis method of novel thiourea type diafenthiuron for killing insects and mites
-
Paragraph 0011; 0014, (2021/06/26)
The invention relates to a synthesis method of novel thiourea type diafenthiuron for killing insects and mites. According to the invention, each step adopts a method of carrying out reaction during flowing, so that the uniform mixing effect of the materials is further improved, the reaction quality and the reaction rate of the product are improved, and a very good technical effect is achieved.
4-substituted bis(2,6-diisopropylphenyl)-carbodiimides, their preparation, their use, and 4-substituted 2,6-diisopropylphenyl isocyanates which can be used for their preparation
-
, (2008/06/13)
4,4'-disubstituted bis-2,6-diisopropylphenyl)carbodiimides of the formula (I) STR1 where R is 1-methyl-1-phenylethyl, phenoxy or tert-butyl, a process for their preparation, their use as stabilizers against hydrolytic degradation of polyaddition and polyc
