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    25.
    发明专利
    未知

    公开(公告)号：DE50101329D1

    公开(公告)日：2004-02-19

    申请号：DE50101329

    申请日：2001-03-10

    Applicant: BASF AG

    Inventor： HACKMANN CLAUS ,  GUENTHERT PAUL ,  DOTTER ANTON ,  BLASCHKA PETER

    IPC: C07D471/04 ,  C07D471/06 ,  C07D491/06 ,  C07D493/06 ,  C09B5/00 ,  C09B5/62 ,  C09B67/20 ,  C09B67/22

    Abstract: Perylene derivatives of the general formula I where X and Y are independently oxygen, -NR 1 or -NR 2 ; R 1 and R 2 are independently hydrogen, C 1 -C 18 -alkyl, C 5 -C 7 -cycloalkyl, aryl or C 1 -C 6 -alkoxy; R 3 to R 10 are independently hydrogen, hydroxyl or aryl, although radicals conjointly attached to one carbon atom may also be -O or -CHR 11 , R 11 is hydrogen or C 1 -C 3 -alkyl, with the proviso that said perylene derivative I contains from at least one to not more than three carbonyl groups per molecule.

    26.
    发明专利
    未知

    公开(公告)号：DE10226181A1

    公开(公告)日：2003-12-24

    申请号：DE10226181

    申请日：2002-06-12

    Applicant: BASF AG

    Inventor： ERK PETER ,  BURG SIMONE ,  BOEHM ARNO ,  BLASCHKA PETER ,  ARMS HARALD ,  HELFER WILLI

    IPC: C09B67/10 ,  C09B67/48 ,  C09B3/14

    Abstract: A process for converting perylene-3,4:9,10-tetracarboximides of the general formula I in which R1 and R2 are each unbranched, branched or cyclic C1-C8-alkyl to a form suitable for use as fluorescent dyes, which comprises a) dissolving or suspending the perylene-3,4:9,10-tetracarboximides whose molecules have a molecular volume of ≦̸230 Å3 in an organic or inorganic solvent at from 0 to 250° C., b1) cooling the solution obtained in step a) to or below the crystallization temperature and, in the case of an organic solvent, if desired at the same time removing excess solvent until the first crystals form, or, in the case of an inorganic solvent, adding water or dilute aqueous solutions of the solvent until the first crystals form, and maintaining the solution at this temperature for further crystallization or b2) cooling the suspension obtained in step a) to or below the crystallization temperature when the temperature in step a) was above the crystallization temperature, and maintaining the suspension at this temperature for further crystallization, c) isolating the solvate crystals formed in step b) and d) then removing the solvent from the solvate crystals, and also novel crystalline forms of perylene-3,4:9,10-tetracarboxylic diimides.

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