Abstract:
PROBLEM TO BE SOLVED: To provide a new halomethylbenzoyl cyanide industrially useful as an important intermediate product for the synthesis of a plant protection agent. SOLUTION: The halomethylbenzoyl cyanide expressed by formula I' is produced by the reaction of a halomethylbenzoyl chloride with an alkali metal cyanide or a transition metal cyanide. In the formula, X is a halogen atom, a 1-4C alkyl, a 1-4C alkoxy, trifluoromethyl, -C(1-5C alkyl)=N-O-(1-5C alkyl) or -C(1-5C alkyl)=N-O-(2-5C alkenyl); m is 0-4; and Y is chloromethyl or bromomethyl. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
The invention relates to a method for reducing the content of compounds containing oxygen and/or nitrogen in material flows having an isobutene content of at least 10 wt. %. According to said method, the material flow is guided over a fixed bed of an acid-free zeolite having a mean pore size of between 0.3 and 1.5 nm, in a liquid phase, at a temperature T [in K] and at a linear speed v [in cm/min], the fixed bed having a dimension I [in cm] in the flow direction of the material flow, and T, v and I obeying the equation 2 l/v = 500 min. The inventive method prevents the formation of isobutene oligomers.
Abstract translation:公开了一种用于减少的含量的含氧和/或具有至少10重量%的异丁烯含量的流化合物,含氮其中所述线性在温度T在液相中的材料流[在K]并用的方法 速度v [在厘米/分钟]经过具有0.3的平均孔径的无酸沸石的固定床至1.5nm,其中在所述材料流动的延伸件1包括[以cm]和T,v和I的流动方向上的固定床 方程2 <(T-283 K)/ 10 K.> L / v <= 500分钟233。 的处理过程避免了异丁烯的形成。
Abstract:
The invention relates to a process for preparing polyisobutene having a mean molecular weight Mn of from 400 to 50 000, in particular from 500 to 10 000, by polymerizing isobutene in the presence of a BF3-containing complex catalyst, wherein the polymerization is carried out at least temporarily in the presence of one or more cyclic ethers.
Abstract:
The invention relates to a method for deactivating and recovering boron trifluoride when producing polyisobutenes by means of cationic polymerization of isobutene or hydrocarbon streams containing isobutene in the liquid phase in the presence of boron trifluoride or in the form of a boron trifluoride catalyst complex. The catalyst complex is separated, essentially in the liquid phase, from the reactor discharge. The method comprises the following steps: a) removing from the polymerization reactor at -60 to 020 C., methanol, ethanol or a mixture of methanol and ethanol in such a quantity that an alcohol phase rich in boron trifluoride is formed; b) separating the alcohol phase according to (a) and, (c) optionally recycling the boron trifluoride of the alcohol phase obtained from (b) to the method in a suitable manner.
Abstract:
The present invention relates to polyalkene amine formulations comprising at least one polyalkene amine in a solvent, having improved performance properties, especially improved low temperature properties; a process for preparing such formulations and the use of these formulations in fuel and lubricant compositions, in particular fuels, for improving the intake system-cleaning action of such fuels.
Abstract:
The invention relates to a method for deactivating and recovering boron trifluoride when producing polyisobutenes by means of cationic polymerization of isobutene or hydrocarbon streams containing isobutene in the liquid phase in the presence of boron trifluoride or in the form of a boron trifluoride catalyst complex. The catalyst complex is separated, essentially in the liquid phase, from the reactor discharge. The method comprises the following steps: a) removing from the polymerization reactor at -60 to 020 C., methanol, ethanol or a mixture of methanol and ethanol in such a quantity that an alcohol phase rich in boron trifluoride is formed; b) separating the alcohol phase according to (a) and, (c) optionally recycling the boron trifluoride of the alcohol phase obtained from (b) to the method in a suitable manner.
Abstract:
The production of polyisobutene by liquid-phase, cationic polymerization of isobutene in the presence of a boron trifluoride catalyst followed by the addition of a solid deactivator at a required point in time uses a deactivator (I) containing boron trifluoride-binding prim., sec., tert. and/or quat. nitrogen atoms, which is insoluble in the reaction mixture. In the production of polyisobutenes (PIB) by liquid-phase, cationic polymerization of isobutene or hydrocarbon streams containing isobutene in the presence of boron trifluoride as catalyst, the catalytic activity of the BF3 is partly or completely eliminated at a required point in time by means of a solid deactivator which contains BF3-binding prim., sec., tert. and/or quat. nitrogen atoms and is insoluble in the reaction mixture.