47.
    发明专利
    未知

    公开(公告)号:DE102004003958A1

    公开(公告)日:2005-08-11

    申请号:DE102004003958

    申请日:2004-01-26

    Applicant: BASF AG

    Abstract: In the process for preparing ionic liquids, an ionic liquid is firstly reacted with an alkoxide or with barium hydroxide and is subsequently neutralized with an acid. The ionic liquid contains a phosphonium and/or ammonium cation and an anion selected from the group consisting of halides, arylsulfonates, alkylsulfonates, sulfate, hydroxysulfate, alkylsulfates, hydrogencarbonate, carbonate. triflate and carboxylates. In this process, virtually any anions can be introduced into the ionic liquids.

    48.
    发明专利
    未知

    公开(公告)号:DE10360397A1

    公开(公告)日:2005-07-14

    申请号:DE10360397

    申请日:2003-12-19

    Applicant: BASF AG

    Abstract: Method of separating acids from reaction mixtures by means of an auxiliary base, where the auxiliary base b) reacts with the acid to form a salt which is liquid at temperatures at which the desired product is not significantly decomposed while the liquid salt is being separated off and c) the salt of the auxiliary base forms two immiscible liquid phases with the desired product or the solution of the desired product in a suitable solvent, in which the auxiliary base used is an alkylmidazole, which has a solubility in 30% strength by weight sodium chloride solution at 25° C. of 10% by weight or less and whose hydrochloride has a melting point below 55° C.

    49.
    发明专利
    未知

    公开(公告)号:DE10333239A1

    公开(公告)日:2005-03-10

    申请号:DE10333239

    申请日:2003-07-21

    Applicant: BASF AG

    Abstract: Process for preparing purified 1,3-substituted imidazolium salts of the formula (I) by reacting a 1,3-substituted imidazolium salt of the formula (II), with a strong base at from 20 to 250° C. while distilling off the 1,3-substituted imidazol-2-ylidene formed, in which the 1,3-substituted imidazol-2-ylidene which has been distilled off is brought into contact in the gaseous state with the protic acid HaA (III) and/or the 1,3-substituted imidazol-2-ylidene which has been distilled off is passed in the gaseous or condensed state into a receiver comprising the protic acid HaA (III).

Patent Agency Ranking