Process for preparing linearly-extended polyalkylenepolyamines

Details Process for preparing linearly-extended polyalkylenepolyamines Process for preparing linearly-extended polyalkylenepolyamines

C - Chemistry, Metallurgy

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C08G 73/00 (2006.01) B01J 20/00 (2006.01) B01J 21/00 (2006.01) B01J 23/00 (2006.01) B01J 23/16 (2006.01) C07C 209/16 (2006.01) C07D 295/023 (2006.01) C08G 73/02 (2006.01)

Patent

CA 2000699

ABSTRACT A process for preparing linearly-extended poly- alkylenepolyamines, such as linear and branched poly- ethylenepolyamines, comprising contacting a difunctional aliphatic alcohol, such as monoethanolamine, with a reactant amine, such as ethylenediamine, in the presence of a catalyst containing tungsten oxide essentially free of the metals of Groups VIII, IB, and IIB of the Periodic Table. 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. 34,711-F

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