Amino-phosphonic-sulfonic acids

Details Amino-phosphonic-sulfonic acids Amino-phosphonic-sulfonic acids

1974-02-15

1978-04-18

Evans, Joseph E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

21 27A, 210 58, 252180, C07F 938

Patent

active

040851346

ABSTRACT:
This invention relates to compounds characterized by the presence of N-methyl, or substituted methyl, phosphonic acid and N-propylenesulfonic acid groups. These compounds contain at least one or more of each group and are bonded to the same or different amino groups. They are derived by reacting an amine with both propane sultone and with a carbonyl compound, such as formaldehyde, and phosphorous acid or its equivalent.
They have a wide variety of uses, for example as scale and corrosion inhibitors, chelating agents, etc.

REFERENCES:
patent: 2673213 (1954-03-01), Bersworth
patent: 2961311 (1960-11-01), Bersworth et al.
patent: 3703545 (1972-11-01), McCrary

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