文献类型：专利

英文题名：Separating and purifying method for polyglot involves generating - extracting and coupling, fatty aldehyde reactant, extracting agent, low level polyglot which is dihydric alcohol or trihydric alcohol

作者：FANG Y;GAO S;QI Y

机构：[1]UNIV EAST CHINA SCI & TECHNOLOGY;[2]UNIV EAST CHINA SCI & TECHNOLOGY

申请号：CN101041613-A

申请日：2007-01-19

公开日：2007-09-26

语种：英文

收录：DERWENT

摘要：NOVELTY - This invention claims a separating and purifying method for low level polylol; its main step is separating and purifying method for low level polylol with generating - extracting and coupling. And reactant of this method is fatty aldehyde of C1 to C6; extracting agent of this is fat ring of five-membered or six-membered, or fat ring of five-membered or six-membered which is substituted by alkyl of C1 to C6; and said low level polylol is dihydric alcohol or trihydric alcohol of C2 to C6, or their mixture. This invention overcomes many problems of existing technology for example: (a) dosage of aldehyde compounds (reactant) is too large, and it can be oxidized to corresponding carboxylic acid easily, and for this production equipment will be eroded; (b) in aqueous phase aldehyde compounds needs to be reclaimed, and for this cost for separating and purifying is increased, and it also overcomes the problem of wall sticking and coking.