1.
    发明专利
    未知

    公开(公告)号:DE59709137D1

    公开(公告)日:2003-02-20

    申请号:DE59709137

    申请日:1997-10-13

    Applicant: BASF AG

    Abstract: Water and ammonia are removed from crude benzophenone-imines obtained by the catalytic reaction of ammonia with benzophenones of formula (I), in which R , R = (a) halogen, hydroxyl, nitro or amino groups, (b) 1-12C linear, branched or cyclic alkyl or alkoxy, optionally substituted with 6-10C aryl, F, Cl or Br, (c) 6-10C aryl or aryloxy, optionally substituted with 1-12C alkyl or alkoxy, (d) heteroalkyl groups comprising alkyl groups as above with in-chain O, S and/or N atom(s), or (e) heteroaryl groups with 5-10 ring atoms containing 1-3 O, S and/or N atoms; m, n = 0-5. The process comprises removing the ammonia by distillation and removing the water by distillation or with a drying agent.

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