申请人:THE DOW CHEMICAL COMPANY
公开号:EP0384766A2
公开(公告)日:1990-08-29
Linearly-extended polyalkylenepolyamines, such as linear and branched polyethylenepolyamines, are prepared by contacting a difunctional aliphatic alcohol, such as monoethanolamine, with a reactant amine, such as ethylenediamine, in the presence of a catalyst containing (a) a Group VB metal oxide, (b) a niobium phosphate or tantalum phosphate, wherein the mole ratio of phosphorus to niobium or tantalum is no greater than about 1.3, or (c) mixtures thereof. Included among the linearly-extended polyalkylenepolyamines are alcohol-extended piperazines, such as N-(2-hydroxyethyl)piperazine, and amine-extended piperazines, such as N-(2-aminoethyl)piperazine.
线型延伸的聚亚烷基多胺,如线型和支化的聚亚乙基多胺,是在含有以下物质的催化剂存在下,通过将双官能团脂肪醇,如单乙醇胺,与反应物胺,如乙二胺接触制备的:(a) VB 族金属氧化物;(b) 磷酸铌或磷酸钽,其中磷与铌或钽的摩尔比不大于约 1.3,或 (c) 它们的混合物。线性延伸的聚亚烷基多胺包括醇延伸的哌嗪,如 N-(2-羟乙基)哌嗪和胺延伸的哌嗪,如 N-(2-氨乙基)哌嗪。