申请人:Institut Neftekhimicheskogo Sinteza Imeni A.V. Toncheva Akademii Nauk
                            
                            
                                公开号:US04467115A1
                            
                            
                                公开(公告)日:1984-08-21
                            
                            The present invention relates to the chemistry of polymers and, more specifically, to a method for preparing of branched polyethylenimine. The method of this invention resides in that a 2-aryl (alkyl)-2-oxazoline is subjected to an isomerizing polymerization with the formation of a poly-N-aroyl(acyl)ethylenimine which is then hydrolyzed and the resulting linear polyethylenimine is alkylated in the presence of .beta.-chlorethylene or .beta.-aminoethylsulphate at a molar ratio of the alkylation agent to the linear polyethylenimine equal to at least 0.5:1 respectively.
                            本发明涉及聚合物的
化学,更具体地涉及制备支化聚
乙烯亚胺的方法。本发明的方法在于将2-芳基(烷基)-2-
噁唑啉进行异构聚合,形成聚N-芳酰基(酰基)
乙烯亚胺,然后
水解,得到线性聚
乙烯亚胺,再在β-
氯乙烯或β-
氨基乙基
硫酸酯的存在下,以烷基化试剂与线性聚
乙烯亚胺的摩尔比至少为0.5:1进行烷基化。