Dialkylamino-N,N-bis(phosphonoalkylene)alkylamines and use in aq

Details Dialkylamino-N,N-bis(phosphonoalkylene)alkylamines and use in aq Dialkylamino-N,N-bis(phosphonoalkylene)alkylamines and use in aq

1979-07-26

1980-11-18

Evans, Joseph E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252180, 252389R, 210700, 260945, 564292, C07F 938, C09K 300, C23F 1110

Patent

active

042345111

ABSTRACT:
Dialkylamino-N,N-bis(phosphonoalkylene)alkylamines, salts, and specifically the hydrochlorides thereof prepared by reacting an unsymmetrical dimethylaminoalkylamine hydrochloride with phosphorous acid and an aldehyde are useful in various industrial processes including acting as corrosion and scale inhibitors in aqueous systems wherein such corrosion and scale problems exist. Quaternized dialkylamino-N,N-bis(phosphonoalkylene)alkylamines suitable for the same uses are prepared by the treatment of an aqueous solution of a dialkylamine-N,N-bis(phosphonoalkylene)alkylamine with an epoxide or a halohydrin.

REFERENCES:
patent: 2599807 (1952-06-01), Bersworth
patent: 2841611 (1958-07-01), Bersworth
patent: 2964549 (1960-12-01), Ramsey et al.
patent: 3160632 (1964-12-01), Toy et al.
patent: 3288846 (1966-11-01), Irani et al.
patent: 4054598 (1977-10-01), Blum et al.
patent: 4064164 (1977-12-01), Blum et al.

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