Catalytic reforming of alkyleneamines to linearly-extended polya

Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing

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544352, 544358, 544401, 544402, 564305, 564346, 564355, 564360, 564367, 564368, 564371, 564372, 564402, 564443, 564474, 564512, C07C20900, C07C20964, C07D295023, C07D29513

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051188503

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 oxdies, 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.

REFERENCES:
patent: 4316841 (1982-02-01), Ford et al.
patent: 4547591 (1985-10-01), Brennan et al.
patent: 4906782 (1990-03-01), Hara et al.
patent: 4982003 (1991-01-01), Hara et al.

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