申请人:UNION CARBIDE CORPORATION
公开号:EP0197611A2
公开(公告)日:1986-10-15
Process for preparing polyalkylene polyamines by contacting an alkanolamine, such as, ethanolamine, and a reactive nitrogen-containing base which is ammonia or a primary or secondary amine, in a first reactor to produce an alkyleneamine, such as, ethylenediamine, and an aminoalkylalkanolåmine, such as, aminoethylethanolamine, in the presence of a catalytically effective amount of an amination catalyst and at a temperature and pressure sufficient to form the alkyleneamine and aminoalkylalkanolamine. Then the alkyleneamine, aminoalkylalkanolamine, unreacted alkanolamine and unreacted nitrogen-containing base are reacted in a second reactor to produce the polyalkylene polyamines, such as, diethylenetriamine, in the presence of a catalytically effective amount of an amination catalyst, such as, a reductive amination catalyst or a phosphorus-containing catalyst, and at a temperature and pressure sufficient to form the polyalkylene polyamines. Preferably the phosphorus-containing catalyst is a Group IIIB metal acid phosphate. By controlling the relative amounts of the feed components, one can achieve a desired molecular weight distribution and range in the polyalkylene polyamine product.
制备聚亚烷基多胺的工艺:在第一反应器中,在催化有效量的胺化催化剂存在下,在足以形成亚烷基胺和氨基烷基醇胺的温度和压力下,使烷醇胺(如乙醇胺)和活性含氮碱(氨或伯胺或仲胺)接触,生成亚烷基胺(如乙二胺)和氨基烷基醇胺(如氨基乙基醇胺)。然后在第二反应器中,在催化有效量的胺化催化剂(如还原胺化催化剂或含磷催化剂)存在下,在足以形成聚亚烷基多胺的温度和压力下,使亚烷基胺、氨基烷醇胺、未反应的烷醇胺和未反应的含氮碱反应,生成聚亚烷基多胺(如二乙烯三胺)。含磷催化剂最好是 IIIB 族金属酸磷酸盐。通过控制进料组分的相对量,可以在聚亚烷基多胺产品中获得所需的分子量分布和范围。