摘要:
A 2-phenoxypyrimidine derivative having the formula: wherein R 1 is a formyl group, a dimethoxymethyl group pr -COOR 4 (wherein R 4 is a hydrogen atom, a lower alkyl group, a benzyl group, an alkali metal atom, an alkaline earth metal atom or an organic ammonium group), R 2 is a chlorine atom, a methyl group, a methoxy group or a difluoromethoxy group, R 3 is a methyl group or a methoxy group, X is a halogen atom, a lower alkyl group, a lower alkoxy group, an amino group, a hydroxyl group, a nitro group or a cyano group, and n is 1 or 2.
摘要:
New substituted derivatives of 1,2,6-triphenyl-4(1H)--pyridinone and pyridinethione are now provided, which are useful as fungicidal agents having valuable and improved fungicidal activities against a variety of phyto-pathogenic microorganisms, especially fungi and which show low toxicity to animals, including humans. These new compounds may be produced by different processes.
摘要:
A class of novel 5H-1,3,4-thiadiazolo[3,2-a]pyrimidin-5-one derivatives are disclosed. These compounds exhibit remarkable fungicidal activities for pathogenic fungi of cucumber gray mold, cucumber downy mildew, Altemaria sooty spot of Chinese mustard, apple Alternaria leaf spot, pear black spot, rice blast, tomato late blight, etc.
摘要:
As new compounds are provided 2-(4′,6′-di-substituted pyrimidine-2′-yl)oxy- or thio-benzoic acid derivatives of the formula wherein R is hydrogen, hydroxy, alkoxy, alkenyloxy, alkylthio or other substituents, R¹ and R² are each a halo, alkyl, alkoxy or other substituents; and X is oxygen or sulfur atom. These new compounds are useful as herbicidal agent effective to inhibit the growth of annual weeds and also perennial weeds predominant in irrigated fields of aquatic rice plants and in ploughed fields.
摘要:
Problems with conventional techniques of adhering a polyurethane elastomer to metal, for example insufficient strength of adhesion between the elastomer and metal in the resulting article, are overcome by coating the metal surface with a first composition comprising a polyepoxy compound and a polyamine compound, drying the coating of the first composition, coating the dried coating of the first composition with a second composition comprising an isocyanate compound having a concentrate of isocyanate groups of 15-50% by weight, drying the coating of the second composition, casting the precursor components for the polyurethane elastomer onto the dried coating of the second composition and hardening the cast precursor components to form the polyurethane elastomer.