摘要:
The present invention belongs to the technical field of agricultural fungicides and discloses a 2-mercaptobenzothiazole manganese zinc, preparation method therefor and application thereof. The chemical structure of the 2-mercaptobenzothiazole manganese zinc is shown as the above formula. Wherein m, n and n' are positive integers, m = 2 (n + n'), n≥n', n: n' = 1: 1 ~ 9: 1. Materials are prepared according to the stoichiometric ratio of the target products; 2-mercaptobenzothiazole is dissolved in sodium hydroxide solution. The aqueous solution of water-soluble manganese salts and water-soluble zinc salts solution are successively added to 2-mercaptobenzothiazole sodium solution under stirring, followed by stirring for mixing well, then the solution being allowed to stand, filtered and washed with water to obtain filter cake, and then dried in vacuum to obtain 2-mercaptobenzothiazole manganese zinc. The present 2-mercaptobenzothiazole manganese zinc may be used as an agricultural fungicide. The present invention coordinates the surface of solid particles of 2-mercaptobenzothiazole manganese with zinc to form a stable clathrate of 2-mercaptobenzothiazole manganese and zinc. Tests show that the clathrate has excellent effect for controlling a plurality of diseases including apple alternaria leaf spot, pear scab, apple ring rot, apple anthracnose and the like.
摘要:
A silver halide photographic material is described, comprising a support bearing at least one silver halide photographic emulsion layer and at least one auxiliary layer on one side or both sides thereof, wherein the silver halide photographic emulsion layer is a layer made of a light-sensitive silver halide emulsion containing silver iodide and an internally fogged silver halide emulsion, or is composed of a layer made of the light-sensitive silver halide emulsion containing silver iodide and a layer made of the internally fogged silver halide emulsion, and the auxiliary layer contains substantially non-light-sensitive silver halide grains having an average grain size of not more than 0.5 µm.
摘要:
A silver halide photographic light-sensitive material comprising a support having coated thereon at least one silver halide emulsion layer and a surface protecting layer, said silver halide photographic light-sensitive material comprising photosensitive silver halide grains and internally fogged silver halide grains, said intemally fogged silver halide grains having adsorbed thereon at least one compound represented by the formula (I): wherein X represents -0-, -NH- or -S-, R 1 , R 2 , R 3 and R 4 represent hydrogen atom or a substituent, and at least one of R,, R 2 , R, and R. is substituted or unsubstituted alkyl or aryl group having up to 13 carbon atoms, which is bonded directly or through a divalent linkage group, to the aromatic nucleus.
摘要:
Korrosionsschutzüberzugsmittel für Metalloberflächen, enthaltend als Korrosionsinhibitor Zink- oder Bleisalze von mit mindestens einer Hydroxyl- oder Mercaptogruppe substituierten fünf- oder sechsgliedrigen Heterocyclen, die im Ring mindestens ein Stickstoffatom und konjugierte Doppelbindungen aufweisen, von denen mindestens eine in einer Gruppierung der Formel vorliegt. Besonders geeignet sind die Salze des Mercaptobenzthiazols, des Mercaptopyridins sowie der entsprechenden s-Triazinderivate, beispielsweise der Cyanursäure und der Thiocyanursaure.
摘要:
2-Mercaptobenzothiazole is obtained from a melt of the raw product prepared by the reaction of aniline, carbon disulphide and sulphur by pressure synthesis in a reactor, where the melt contains 2-mercaptobenzothiazole, unreacted raw materials, intermediate products and pitches, so that after reaching a stationary state of the reaction medium it includes the following steps: a) crystallization of the 2-mercaptobenzothiazole raw product from an aniline solution, b) dividing the liquid phase (FK) from crystallization from step a) in three parts, c) removing one part of the liquid phase (FK1) from crystallization from step a) out of the process, d) returning the second part of the liquid phase (FK2) from crystallization from step a) into the reactor for preparation of the raw product and supplementing it with sulphur and carbon disulphide with respect to aniline, e) final purification of the crystallized 2-mercaptobenzothiazole from step a) in the aniline liquid phase and separation of pure 2-mercaptobenzothiazole, f) using the third part of the liquid phase (FK3) from crystallization from step a), supplemented with the liquid phase (FR) from final purification from step e) and possibly with aniline for crystallization of a further batch of the 2-mercaptobenzothiazole raw product, g) using the liquid phase (FR) from final purification from step f), together with a part of the liquid phase (FK3) from step e), possibly with aniline, for crystallization of the 2-mercaptobenzothiazole raw product, wherein the steps a) to g) are repeated.
in der R¹ und R² unabhängig voneinander Wasserstoff, geradkettiges oder verzweigtes C₁-C₄-Alkyl, geradkettiges oder verzweigtes C₁-C₄-Alkoxy, Nitro, Fluor, Chlor, Brom, SO₂Cl, Cyano oder SO₂-C₁-C₄-alkyl bedeuten, und X für Schwefel oder Sauerstoff steht, können aus den zugehörigen 2-Mercapto-benzothiazolen oder 2-Mercapto-benzoxazolen durch Chlorierung mit Thionylchlorid in Gegenwart von Phosphorigsäure-Verbindungen der Formel YP(OR⁵)₂ (III) hergestellt werden, in der R⁵ Wasserstoff, geradkettiges oder verzweigtes, substituiertes oder unsubstituiertes C₁-C₁₂-Alkyl, Phenyl oder C₇-C₁₀-Aralkyl bedeutet und Y für Wasserstoff oder OR⁵ steht.