摘要:
The present invention relates to the use of strobilurin type compounds of formula I and the N-oxides and the salts thereof for combating phytopathogenic fungi containing an amino acid substitution F129L in the mitochondrial cytochrome b protein (also referred to as F129L mutation in the mitochondrial cytochrome b gene) conferring resistance to Qo inhibitors, and to methods for combating such fungi. The invention also relates to novel compounds, processes for preparing these compounds, to compositions comprising at least one such compound, and to seeds coated with at least one such compound.
摘要:
A process for migrating C=C double bonds within an unsaturated organic compound is described. The process involves contacting an unsaturated organic compound starting material with a heteropoly acid catalyst in the presence of light having a wavelength of less than or equal to 700 nm. Also described is a process for the preparation of novel heteropoly acids having markedly increased surface area.
摘要:
A process for separating a divinyl hydrocarbon from a composition mixture stream containing at least a divinyl hydrocarbon and other components, the process including (a) passing a composition mixture feed stream containing at least (i) a divinyl hydrocarbon; and (ii) a monovinyl hydrocarbon, and/or (iii) a non-vinyl hydrocarbon through a process-scale chromatography unit; wherein the process scale chromatography unit includes a ligand exchange media comprising a metal adapted to form a ligand with an olefin functionality; wherein the metal of the ligand exchange media is loaded on an adsorbent; and wherein the divinyl hydrocarbon is adsorbed onto the ligand exchange media; (b) passing a weak first elution solvent through the unit to elute the monovinyl hydrocarbon and/or the non-vinyl hydrocarbon from the unit; (c) passing a strong second elution solvent through the unit to elute the divinyl hydrocarbon product stream from the unit; and (d) recovering the divinyl hydrocarbon product stream having been separated from the other components in the composition mixture stream; and an apparatus therefor.
摘要:
The present invention relates to a polyisocyanate composition comprising, on the basis of the total mass of the polyisocyanate composition, 97 weight % or more of a polyisocyanate, and 2.0 mass ppm or more and 1.0×10 4 mass ppm or less of a compound having at least one unsaturated bond in which the compound is a different compound from the polyisocyanate, or 5.0 mass ppm or more and 2.0×10 4 mass ppm or less of at least one inactive compound selected from the group consisting of a hydrocarbon compound, an ether compound, a sulfide compound, a halogenated hydrocarbon compound, a Si-containing hydrocarbon compound, a Si-containing ether compound, and a Si-containing sulfide compound.
摘要:
The invention relates to a retarder composition for the control of unwanted polymerisation reactions during the production and processing of ethylenically unsaturated compounds, the composition comprising at least one di-substituted quinone compound and at least one hydroxylamine compound. Optionally, the composition also comprises at least one stable free radical nitroxyl compound and one or more formulation adjuvants. The invention also envisages a process stream comprising at least one ethylenically unsaturated compound, and a method for the prevention of unwanted polymerisation reactions during the production and processing of ethylenically unsaturated compounds. The composition has been found to be far more effective than expected, given that the individual components show little or no efficacy when used alone, and poses much less hazard to humans than the compositions of the prior art.
摘要:
The invention relates to a method for producing organic compounds of the general formula (I) R-R' (I), by reacting a corresponding compound of the general formula (II) R-X (H), where X stands for fluorine, chlorine, bromine, or iodine, forming a magnesium organic compound of the general formula (III) [M + ]n [R m M g X k Y 1 ] (III), compounds of the formula (III) being reacted with a compound of the general formula (IV), characterized in that the reaction of (III) with (IV) is performed in the presence of a) catalytic quantities of an iron compound, relative to the compound of the general formula (II), and optionally in the presence b) of an additive comprising nitrogen, oxygen, and/or phosphorous in a catalytic or stoichiometric quantity relative to the compound of the general formula (II).
摘要翻译:描述的是通过将相应的通式(II)化合物R-X(II)转化为其中X为氟,氯,氯, 溴或碘与通式(III)的有机镁化合物[M +] n [RmMgXkY1](III)反应,其中式(III)化合物与通式(Ⅳ)的化合物反应,其特征在于: (III)与(IV)的化合物在(a)催化量的铁化合物的存在下进行,基于通式(II)的化合物,并且任选在b)氮,氧和/ 或基于通式(II)的化合物的催化或化学计量的含磷添加剂。
摘要:
The present invention relates to a process for catalytically converting an alkylaromatic hydrocarbon into a vinylaromatic hydrocarbon by directing said alkylaromatic hydrocarbon and steam into a reactor containing dehydrogenation catalyst, said process comprising the steps of: (a) forming a mixed reactant stream consisting essentially of said alkylaromatic hydrocarbon and steam; (b) bringing said mixed reactant stream into contact with a dehydrogenation catalyst consisting essentially of iron oxide catalyst promoted with alkali metal and at conditions effective to convert at least a portion of the alkylaromatic hydrocarbon to vinylaromatic hydrocarbon; wherein an effective amount of an alkali metal compound in the form of a powder is injected continuously or intermittently in at least one of the feedstocks sent to the dehydrogenation catalyst; said effective amount of alkali metal compound being sufficient to maintain substantially constant levels of conversion of alkylaromatic hydrocarbon and selectivity of vinylaromatic hydrocarbon.
摘要:
[PROBLEMS] To provide: a method by which the generation of a copolymer of an aromatic vinyl compound and either the divinylbenzene generated in the production of the aromatic vinyl compound or the divinylbenzene which has come into the system together with a raw material for the aromatic vinyl compound is inhibited in the steps of distilling, purifying, and storing the aromatic vinyl compound: and a method of inhibiting the copolymer from depositing on and thus fouling devices and facilities. [MEANS FOR SOLVING PROBLEMS] The method of inhibiting the generation of a copolymer of divinylbenzene and an aromatic vinyl compound is characterized in that a dinitrophenol compound (A), a sulfonic acid compound (B), and a p-phenylenediamine compound (C) are simultaneously used in the steps of producing, purifying and storing the aromatic vinyl compound.