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1. 发明授权

US5011999A Process of preparing non-cyclic polyalkylenepolyamines employing group VB metal catalysts 失效
标题翻译：使用VB族金属催化剂制备非环状聚亚烷基多胺的方法
公开(公告)号：US5011999A
公开(公告)日：1991-04-30
申请号：US314528
申请日：1989-02-23
申请人： Robert G. Bowman , George E. Hartwell , David C. Molzahn , Enrique G. Ramirez , John E. Lastovica, Jr.
发明人： Robert G. Bowman , George E. Hartwell , David C. Molzahn , Enrique G. Ramirez , John E. Lastovica, Jr.
IPC分类号： C07C209/16 , C07C211/14 , C07D295/13 , C08G73/02
CPC分类号： C07D295/13 , C07C209/16
摘要： A process for the preparation of predominantly non-cyclic polyalkylenepolyamines comprising contacting a difunctional aliphatic alcohol with ammonia or a primary or secondary aliphatic amine in the presence of a catalyst selected from the group consisting of Group VB metal oxides, niobium phosphates, tantalum phosphates, and mixtures thereof. For example, monoethanolamine is aminated by ethylenediamine to predominantly linear and branched polyethylenepolyamines in the presence of a catalyst containing niobium oxide supported on boehmite alumina.

2. 发明授权

US4337175A Catalyst for the preparation of ethylenimine 失效
标题翻译：用于制备乙烯亚胺的催化剂
公开(公告)号：US4337175A
公开(公告)日：1982-06-29
申请号：US167881
申请日：1980-07-14
申请人： Enrique G. Ramirez
发明人： Enrique G. Ramirez
IPC分类号： B01J23/20
CPC分类号： B01J23/20
摘要： An improved catalyst suitable for the dehydration of an alkanolamine in the vapor phase to produce an alkylenimine which catalyst contains an oxide of niobium or tantalum. Optionally an alkaline earth oxide is employed as a promoter. The catalyst is generally used on an inert low surface area support at a concentration of less than 5% of the tantalum or niobium oxide and less than 0.5% of the promoter oxide.
摘要翻译：一种改进的催化剂，适用于气相中链烷醇胺的脱水，生成亚烷基亚胺，该催化剂含有铌或钽的氧化物。任选地，使用碱土金属氧化物作为助催化剂。催化剂通常用于惰性低表面积载体上，浓度小于钽或铌氧化物的5％，并且小于0.5％的助催化剂氧化物。

3. 发明授权

US4737243A Method for decoloration of triethylenetetramine (TETA) 失效
标题翻译：三亚乙基四胺（TETA）脱色方法
公开(公告)号：US4737243A
公开(公告)日：1988-04-12
申请号：US809109
申请日：1985-12-16
申请人： Robert J. Siml , Clara S. Dannhaus , Enrique G. Ramirez
发明人： Robert J. Siml , Clara S. Dannhaus , Enrique G. Ramirez
IPC分类号： B01D3/34 , C07C85/26
CPC分类号： B01D3/34
摘要： A method of removing color from crude triethylenetetramine (TETA) is disclosed. In the preferred procedure, acid treated clay or acidic form zeolite are mixed with the TETA at elevated temperatures. After several hours exposure, the TETA is distilled to obtain a decolored product. The decoloration can be a continuous or batch process. The distillation is performed in the presence or absence of the catalyst.
摘要翻译：公开了一种从粗三亚乙基四胺（TETA）中除去颜色的方法。在优选的方法中，将酸处理的粘土或酸性沸石与TETA在升高的温度下混合。暴露数小时后，蒸馏TETA得到脱色产物。脱色可以是连续的或分批的过程。在存在或不存在催化剂的情况下进行蒸馏。

4. 发明授权

US4477591A Method for preparing a catalyst for the dehydration of an alkanolamine 失效
标题翻译：制备用于脱水烷醇胺的催化剂的方法
公开(公告)号：US4477591A
公开(公告)日：1984-10-16
申请号：US457983
申请日：1983-01-14
申请人： Enrique G. Ramirez
发明人： Enrique G. Ramirez
IPC分类号： B01J23/20
CPC分类号： B01J23/20
摘要： A catalyst useful for dehydrating an alkanolamine to form an alkylenimine is prepared by providing an aqueous or hydrofluoric acid solution of a tantalum or niobium compound, neutralizing this solution with ammonium hydroxide to precipitate the metal hydroxide, washing the precipitated metal hydroxide with water and subsequently dissolving it in an aqueous solution of a lower carboxylic acid, e.g. oxalic acid, applying the acid solution to a catalyst support to impregnate it with the metal hydroxide and finally drying and calcining the impregnated support to form the desired metal oxide catalyst. An alkaline earth metal oxide is optionally employed by impregnating the support with an aqueous solution of the alkaline earth metal hydroxide, preferably prior to the application of the catalyst.
摘要翻译：通过提供钽或铌化合物的水或氢氟酸溶液制备用于脱水烷醇胺以形成亚烷基亚胺的催化剂，用氢氧化铵中和该溶液以沉淀金属氢氧化物，用水洗涤沉淀的金属氢氧化物，随后溶解它在低级羧酸的水溶液中，例如草酸，将酸溶液施加到催化剂载体上以用金属氢氧化物浸渍，最后干燥并煅烧浸渍的载体以形成所需的金属氧化物催化剂。任选地通过用碱土金属氢氧化物的水溶液浸渍载体来使用碱土金属氧化物，优选在施加催化剂之前。

5. 发明授权

US4376732A Niobium or tantalum catalysts for the preparation of ethylenimine 失效
标题翻译：用于制备乙烯亚胺的铌或钽催化剂
公开(公告)号：US4376732A
公开(公告)日：1983-03-15
申请号：US281611
申请日：1981-07-09
申请人： Enrique G. Ramirez
发明人： Enrique G. Ramirez
IPC分类号： B01J23/20 , C07B3/00 , C07B5/02 , C07D241/12
CPC分类号： B01J23/20
摘要： An improved catalyst suitable for the dehydration of an alkanolamine in the vapor phase to produce an alkylenimine which catalyst contains an oxide of niobium or tantalum. Optionally an alkaline earth oxide is employed as a promoter. The catalyst is generally used on an inert low surface area support at a concentration of less than 5% of the tantalum or niobium oxide and less than 0.5% of the promoter oxide.
摘要翻译：一种改进的催化剂，适用于气相中链烷醇胺的脱水，生成亚烷基亚胺，该催化剂含有铌或钽的氧化物。任选地，使用碱土金属氧化物作为助催化剂。催化剂通常用于惰性低表面积载体上，浓度小于钽或铌氧化物的5％，并且小于0.5％的助催化剂氧化物。

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