Method for recovering omega-amino-dodecanoic acid from crystalli

Details Method for recovering omega-amino-dodecanoic acid from crystalli Method for recovering omega-amino-dodecanoic acid from crystalli

1981-08-14

1983-11-29

Waltz, Thomas A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260419, 562554, C09F 500, C11C 300

Patent

active

044180160

ABSTRACT:
A process for recovering omega-amino-dodecanoic acid by separating the byoducts from the crude acid that comprises, in the sequence indicated (a) treating the crude acid in the presence of water with an acid (A) in such an amount as to obtain an acid (A)/amino acid molar ratio comprised of between 2:1 and 1:1, the amount of water being such as to dissolve at least part of the salt obtained and not to dissolve at least part of the by-products, (b) separating the phases into one containing most of the salt and another containing most of the by-products, (c) decomposing the salt by treatment with an organic or inorganic base (B) and isolating the amino acid in the free state.

REFERENCES:
patent: 2871247 (1959-01-01), Seon et al.
patent: 4054588 (1977-10-01), Siclari et al.
patent: 4085127 (1978-04-01), Siclari et al.

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