3.
    发明专利
    未知

    公开(公告)号:DE10319452A1

    公开(公告)日:2004-11-18

    申请号:DE10319452

    申请日:2003-04-30

    Applicant: BASF AG

    Abstract: A process for continuously preparing methyl vinyl ether by reacting methanol with ethyne in the liquid phase in the presence of a basic alkali metal or alkaline earth metal compound at a temperature of from 40 to 300° C. and a pressure of from 0.1 to 5 MPa abs, by carrying out the reaction in the absence of a continuous gas phase and at a methyl vinyl ether concentration in the entire liquid phase of

    5.
    发明专利
    未知

    公开(公告)号:DE102004009311A1

    公开(公告)日:2005-09-08

    申请号:DE102004009311

    申请日:2004-02-26

    Applicant: BASF AG

    Abstract: Process for preparing a propargyl alcohol of the formula I in which R 1 is a C 130 -alkyl, C 3-8 -cycloalkyl, C 2-20 -alkoxyalkyl, C 6-14 -aryl, C 7-20 -alkoxyarl, C 7-20 -aralkyl, C 7-20 -alkylaryl radical or H, by reacting a corresponding aldehyde of the formula R 1 -CHO with acetylene in the presence of ammonia and a catalytic amount of an alkali metal hydroxide, alkaline earth metal hydroxide or alkali metal alkoxide in the range from 0.6 to 10 mol % based on the aldehyde used, and also processes for preparing an allyl alcohol of the formulae II and III starting from the propargyl alcohol I prepared in accordance with the invention.

    10.
    发明专利
    未知

    公开(公告)号:DE10163335A1

    公开(公告)日:2003-07-10

    申请号:DE10163335

    申请日:2001-12-21

    Applicant: BASF AG

    Abstract: Distillation column has a dividing wall which divides it into inflow and extraction sections, and upper and lower column zones. The mixture for distillation comprises a vapor feed which enters between the upper and lower inflow sections, between which the side extraction point removes vapor. The inflow and the extraction zones are offset relative too the dividing wall. The vapor feed rate is equal in all zones of the column. The distillation column has a dividing wall (TW) which divides it into an inflow section (2,4), an extraction section (3,5), and common upper (1) and lower (6) column zones. The mixture for distillation is at least partially a vapor feed (F) which enters between the upper and lower inflow sections, and the side extraction point (B) removes vapor between the upper and lower extraction zones. The cross sectional surfaces of the inflow and the extraction zones are set by an offset in the dividing wall. The F-factor is equal in all the zones of the column, defined as the product of the gas flow speed in m/seconds multiplied with the square root of the gas density in kg/m3.

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