首页>
外国专利>
Isomer separation - from chlorination and nitration products of benzene and toluene
Isomer separation - from chlorination and nitration products of benzene and toluene
展开▼
机译:异构体分离-从苯和甲苯的氯化和硝化产物中分离
展开▼
页面导航
摘要
著录项
相似文献
摘要
Dichloro-, trichloro-, dichloronitro- or trichloronitro-benzene or nitro-, chloro-, dichloro- or nitrochlorotoluene can be separated into their isomers, by modification of process disclosed in parent patent in which p-nitrochlorobenzene is continuously separated from an o-/p-/m- nitrochlorobenzene isomer mixt. by fractional crystallisation and filtering to form a crystal prod. enriched by 85 - 95% p-nitrochlorobenzene, which is purified by pressing.
展开▼