234.
    发明专利
    失效

    公开(公告)号:JP2000505102A

    公开(公告)日:2000-04-25

    申请号:JP51905198

    申请日:1997-10-23

    236.
    发明专利
    失效

    公开(公告)号:JPH10509728A

    公开(公告)日:1998-09-22

    申请号:JP51729995

    申请日:1995-11-29

    238.
    发明专利
    失效

    公开(公告)号:JPH09505571A

    公开(公告)日:1997-06-03

    申请号:JP51480095

    申请日:1994-11-15

    Abstract: PCT No. PCT/EP94/03782 Sec. 371 Date May 16, 1996 Sec. 102(e) Date May 16, 1996 PCT Filed Nov. 15, 1994 PCT Pub. No. WO95/14665 PCT Pub. Date Jun. 1, 1995Cyclic lactams are prepared by reacting amino carbonitriles with water in liquid phase in a fixed bed reactor in the presence of heterogeneous catalysts which have no soluble constituents under the reaction conditions.

    239.
    发明专利
    失效

    公开(公告)号:JPH09505570A

    公开(公告)日:1997-06-03

    申请号:JP51479995

    申请日:1994-11-15

    Abstract: PCT No. PCT/EP94/03782 Sec. 371 Date May 16, 1996 Sec. 102(e) Date May 16, 1996 PCT Filed Nov. 15, 1994 PCT Pub. No. WO95/14665 PCT Pub. Date Jun. 1, 1995Cyclic lactams are prepared by reacting amino carbonitriles with water in liquid phase in a fixed bed reactor in the presence of heterogeneous catalysts which have no soluble constituents under the reaction conditions.

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