| 发明名称 |
Process for the preparation of 4,4'-dihalobiphenyls |
| 摘要 |
4,4'-dihalobiphenyls can be prepared by catalyzed halogenation of biphenyls with halogenating agents, the catalysts used being zeolites having pore sizes of at least 5 ANGSTROM .
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| 申请公布号 |
US4950817(A) |
申请公布日期 |
1990.08.21 |
| 申请号 |
US19890318087 |
申请日期 |
1989.03.02 |
| 申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
BOTTA, ARTUR;BUYSCH, HANS-JOSEF;PUPPE, LOTHAR |
| 分类号 |
B01J29/06;B01J29/18;B01J29/40;B01J29/60;B01J29/65;B01J29/86;C07B31/00;C07B39/00;C07B61/00;C07C17/00;C07C17/12;C07C17/20;C07C25/18;C07C27/00;C07C37/62;C07C39/15;C07C41/00;C07C41/22;C07C43/225;C07C67/00 |
主分类号 |
B01J29/06 |
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