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浏览/检索结果: 共8条，第1-8条 帮助 限定条件 内容类型：专利     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 IN-SITU ON-LINE DETECTION DEVICE AND METHOD FOR LONG-DISTANCE METALLURGICAL LIQUID METAL COMPONENT 专利 专利类型: 发明, 专利号: EP3023771A4, 申请日期: 2017-03-01, 作者:  Qi LF(齐立峰);  Sun LX(孙兰香);  Yu HB(于海斌);  Li Y(李洋);  Cong ZB(丛智博) 收藏  |  浏览/下载：15/0  |  提交时间：2018/08/08 Preparing fluorenone involves mixing raw material fluorene, organic solvent containing aromatic ring in molecule and crown acid, and then adding alkali solution. 专利 申请日期: 2016-01-01, 公开日期: 2016-07-27 作者:  GAO Z HE Y LI H SHI Z YU L XIE H 收藏  |  浏览/下载：8/0  |  提交时间：2019/12/09 Preparing 9-fluorenone comprises mixing fluorene with water as solvent, alkali catalyst, quaternary ammonium salt as phase transfer agent and oxidant and then reacting. 专利 申请日期: 2014-01-01, 公开日期: 2014-05-14 作者:  SHI Z LI H YAN J YU L GAO Z HE Y 收藏  |  浏览/下载：15/0  |  提交时间：2019/12/11 Phase-transfer catalytic preparation of 9-fluorenone involves mixing fluorine with xylene with alkali solution as catalyst, adding quat.-ammonium salt, stirring, introducing oxygen-containing gas, cooling, crystallizing, and filtering. 专利 申请日期: 2013-01-01, 公开日期: 2013-12-11 作者:  YAN J YU L LI H GAO Z HE Y 收藏  |  浏览/下载：2/0  |  提交时间：2019/12/13 Preparing 9-fluorenone from industrial fluorine using e.g. alkali catalyst comprises e.g. dissolving industrial fluorene and quaternary ammonium salt in toluene to prepare oil phase, preparing aqueous phase alkali solution, mixing, layering. 专利 申请日期: 2013-01-01, 公开日期: 2013-12-25 作者:  LI H JUNG D YU L GAO Z HE Y 收藏  |  浏览/下载：3/0  |  提交时间：2019/12/13 Preparation of 9-fluorenone involves combining fluorene and quaternary ammonium salt, dissolving in nitrogen-containing heterocyclic compound to obtain oil phase, and dissolving alkali catalyst in water to obtain aqueous phase. 专利 申请日期: 2013-01-01, 公开日期: 2013-12-11 作者:  YU L LI H GAO T GAO Z HE Y 收藏  |  浏览/下载：1/0  |  提交时间：2019/12/13 Method for improving efficiency of shallowly and coldly recovering oil field associated gas light dydrocarbon in petrochemical industry, involves utilizing compressor in multi-stage compression structure, and arranging coolers among stages. 专利 申请日期: 2011-01-01, 公开日期: 2011-05-25 作者:  ZHU X WU X LI B YU C HE G RUAN X 收藏  |  浏览/下载：4/0  |  提交时间：2019/12/18 USE OF BAICALEIN IN MANUFACTURING MEDICAMENT FOR PREVENTING AND TREATING PARKINSON' S DISEASE 专利 作者:  DU, Guanhua;  CHENG, Yinxia;  MU, Xin;  HE, Guorong;  YU, Xin 收藏  |  浏览/下载：10/0  |  提交时间：2019/12/05