专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5334774A Process for purifying phenol 失效
标题翻译：苯酚纯化方法
公开(公告)号：US5334774A
公开(公告)日：1994-08-02
申请号：US64982
申请日：1993-05-24
申请人： Kayoko Kogure , Kazuo Kimura , Michihiro Kawasaki , Masaaki Toma , Eiji Imamura
发明人： Kayoko Kogure , Kazuo Kimura , Michihiro Kawasaki , Masaaki Toma , Eiji Imamura
IPC分类号： C07B61/00 , C07C7/06 , C07C15/02 , C07C37/68 , C07C37/80 , C07C37/88 , C07C39/04 , C07C37/74
CPC分类号： C07C37/685 , C07C37/80 , C07C37/88 , Y02P20/582
摘要： A process for purifying and recovering phenol present in a mixed solution containing phenol and one or more compounds capable of forming azeotropic mixtures with phenol wherein an additive which is at least one compound belonging to the following groups 1 to 5 is added to the mixed solution and the resulting mixture is distilled:group 1: dialkylene glycols having 2-10 carbon atoms, polyalkylene glycols having 2-10 carbon atoms, and the ethers thereof,group 2: alkanediols having 2-20 carbon atoms,group 3: ethanolamine-type compounds represented by the formula (1) shown below,group 4: lactam compounds represented by the formula (2) shown below,group 5: quinoline, sulfolane, and N,N-dimethylimidazolidinone, ##STR1## wherein R.sub.1 represents an alkyl group having 1-6 carbon atoms, a cycloalkyl group having 1-6 carbon atoms, a monohydroxyalkyl group having 1-6 carbon atoms or a hydrogen atom, m represents an integer of 1-4, and X represents a hydroxyl group, an amino group or a hydrogen atom provided that R.sub.1 and X may conjointly represent a group which can be formed by removing respectively one hydrogen atom from R.sub.1 and X, respectively, and connecting the rests of R.sub.1 and X to form a cyclic ring, ##STR2## wherein R.sub.2 represents an alkyl group having 1-6 carbon atoms, a cycloalkyl group having 1-6 carbon atoms, a monohydroxyalkyl group having 1-6 carbon atoms, or a hydrogen atom, and n represents an integer of 3-7.
摘要翻译：一种纯化和回收苯酚存在于苯酚和一种或多种与苯酚形成共沸混合物的混合溶液中的苯酚的方法，其中将至少一种属于下列基团1至5的化合物的添加剂加入到混合溶液中，蒸馏得到的混合物：组1：具有2-10个碳原子的二亚烷基二醇，具有2-10个碳原子的聚亚烷基二醇及其醚，第2组：具有2-20个碳原子的烷二醇，第3组：乙醇胺型化合物由下式（1）表示的组4：由下式（2）表示的内酰胺化合物，组5：喹啉，环丁砜和N，N-二甲基咪唑烷酮，其中R1表示烷基具有1-6个碳原子的基团，具有1-6个碳原子的环烷基，具有1-6个碳原子的一羟基烷基或氢原子，m表示1-4的整数，X表示羟基，氨基组或水平条件是R1和X可以共同表示可以通过分别从R1和X分别除去一个氢原子并连接其余的R 1和X以形成环状而形成的基团，其中（2）其中 R2表示具有1-6个碳原子的烷基，具有1-6个碳原子的环烷基，具有1-6个碳原子的一羟基烷基或氢原子，n表示3-7的整数。

IPRDB

热门服务

关于我们

友情链接

联系方式