DIARYL ETHERS, METHOD FOR THEIR OBTAINING AND DIARYL ETHERS-CONTAINING HERBICIDE COMPOSITIONS, INTERMEDIATE COMPOUNDS, METHOD FOR THEIR OBTAINING, METHOD TO PROTECT AGAINST WEEDS AND METHOD OF PLANT DESICCATION Russian patent published in 2002 - IPC

FIELD: agriculture. SUBSTANCE: the innovation refers to the new compounds of formula (1), or their salts, where X, Y represent, independently, hydrogen, halogen, Z represents oxygen, Q is chosen among - Q₁-Q₉ described in the formula of innovation and which contain heterocycles with nitrogen and sulfur, Ar represents pyridyl, pyrimidyl, pyridazinyl, triazolyl, thiazolyl, isothiazolyl or phenyl, or pyridyl, pyrimidyl, pyridazinyl, triazolyl, thiazolyl, isothiazolyl or phenyl substituted by substituents to 5, when Q represents Q₃ or Q₆ substituted phenyl is excluded. It is, also, revealed several methods to obtain the mentioned compounds, intermediate ones and herbicide compositions based upon new diaryl ethers suggested. Moreover, the method to protect against weeds is put forward along with that of plant desiccation which include application of mentioned compounds in a locus. EFFECT: higher efficiency. 21 cl, 16 tbl, 21 ex