Metal complexes of .alpha.-aminophosphonic acid half-esters and

Details Metal complexes of .alpha.-aminophosphonic acid half-esters and Metal complexes of .alpha.-aminophosphonic acid half-esters and

1977-12-21

1980-04-22

Sneed, Helen M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260439R, C07F 1504, C08K 534

Patent

active

041994949

ABSTRACT:
Metal salts of monoalkyl .alpha.-aminophosphonates or of .alpha.-aminophospinates show a considerable thermostability. Obviously the amino groups are coordinated on the metal atom. These complex salts are soluble in organic solvents and compatible even with non-polar plastics such as polyolefins. They are effective stabilizers against the light-induced deterioration of polymers with an outstanding duration of this activity.
The cation of these salts may be a complex-forming multivalent metal, preferable nickel, cobalt, zinc and aluminum. The amino group may be primary, secondary or tertiary. The complex salts are prepared according conventional processes, for example by conversion of the corresponding alkali phosphonate with a metal halide in organic solution.

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