101.
    发明专利
    未知

    公开(公告)号:DE10152118A1

    公开(公告)日:2003-04-30

    申请号:DE10152118

    申请日:2001-10-23

    Applicant: BASF AG

    Abstract: The invention relates to a method for producing isocyanates by the reaction of the corresponding primary amines with phosgene in an inert solvent, whereby 0.01 to 50 mole % of a sulphonic acid amide is used, based on the total amount of primary amine and of formed isocyanate in the reaction solution.

    METHOD FOR PRODUCING CARBONYL DIIMIDAZOLES

    公开(公告)号:HU0102739A2

    公开(公告)日:2001-11-28

    申请号:HU0102739

    申请日:1999-07-06

    Applicant: BASF AG

    Abstract: In a process for preparing carbonyldiimidazole of the general formulae Ia, Ib, Ic or mixtures thereofwhere R1 is hydrogen or a C1-4-alkyl radical and R2 is hydrogen or a methyl radical, by reacting at least one imidazole of the general formulae IIa and IIbin which R1 and R2 have the abovementioned meaning, with phosgene in an inert solvent, stoichiometric amounts, based on the imidazoles, of an organic nitrogen base which has a lower pKb than imidazole are added to the reaction mixture.

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