A process for the preparation of oligomeric poly alpha-olefins comprises oligomerizing low molecular weight PAO in the presence of an ionic liquid catalyst under oligomerization conditions. The low molecular weight PAOs used as a feed or feed component of the present process are the light olefinic by-product fraction including the dimers and light fractions from the metallocene-catalyzed PAO oligomerization process.
[DE] VERFAHREN ZUR HERSTELLUNG VON ONIUM-ALKYLSULFONATEN<br/>[EN] ONIUM-ALKYLSULFONATE PRODUCTION METHOD<br/>[FR] PROCEDE DE PRODUCTION D'ALKYLSULFONATES D'ONIUM
申请人:MERCK PATENT GMBH
公开号:WO2007006387A2
公开(公告)日:2007-01-18
(DE) Die Erfindung betrifft ein Verfahren zur Herstellung von Onium-Alkylsulfonaten durch Umsetzung eines Onium-Halogenids oder -Carboxylats mit einem symmetrisch substituierten Dialkylsulfit oder mit einem unsymmetrisch substituierten Dialkylsulfit bei Temperaturen von 50 bis 170°C.(EN) The invention relates to a method for producing onium-alkylsulfonates by reacting an onium halogenide or carboxylate with a symmetrically substituted dialkyl sulphite or with a asymmetrically substituted dialkyl sulphite at temperatures ranging from 50 to 170 °C.(FR) L'invention concerne un procédé de production d'alkylsulfonates d'onium par réaction d'un halogénure ou d'un carboxylate d'onium avec un sulfite de dialkyle substitué de façon symétrique ou avec un sulfite de dialkyle substitué de façon asymétrique à des températures comprises entre 50 et 170 °C.
VERFAHREN ZUR HERSTELLUNG VON ONIUM-ALKYLSULFONATEN
申请人:Merck Patent GmbH
公开号:EP1902004A2
公开(公告)日:2008-03-26
Devices with surface bound ionic liquids and method of use thereof
申请人:Zeng Xiangqun
公开号:US20070231918A1
公开(公告)日:2007-10-04
An ionic liquid bound on an exposed surface of a device such as for detecting organic chemicals, preferably a gas sensor is described. The gas sensor can operate at high temperatures with a fast linear response which is also reversible. At high temperatures, the frequency change (Δf) versus concentration (C) curve mirrors the Henry's gas law, such that the concentration of a gas sample in liquid solvent is proportional to the concentration or partial pressure of the sample in gas phase. A single gas sensor, or an array of sensors, can be used for the detection and quantitative analysis of gas vapors.