Catalytic reforming of alkyleneamines to linearly-extended polya

Details Catalytic reforming of alkyleneamines to linearly-extended polya Catalytic reforming of alkyleneamines to linearly-extended polya

1992-01-31

1993-05-11

Robinson, Allen J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

544352, 544358, 544401, 544402, 564305, 564312, 564346, 564355, 564360, 564367, 564368, 564369, 564370, 564371, 564372, 564402, 564443, 564470, 564474, 564511, 564512, C07C20916, C07C20964, C07D295023, C07D29513

Patent

active

052103072

ABSTRACT:
A process for reforming alkyleneamines to predominantly linearly-extended polyalkylenepolyamines comprising contacting an alkyleneamine or mixture thereof with a catalyst under conditions such that a mixture of polyalkylenepolyamines enriched in linearly-extended products is formed, said catalyst containing at least one compound selected from the group consisting of (a) Group VB metal oxides, (b) Group VB metal phosphates, (c) silicates of Groups IIA, IIIB, IVB, VB, and the lanthanide and actinide metals, and (d) tungsten oxides, with the proviso that the silicates and tungsten oxides are essentially free of aluminum. For example, ethylenediamine is contacted with a catalyst of niobium phosphate or niobic acid under reaction conditions to yield predominantly non-cyclic polyethylenepolyamines.

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