Purification of N,N'-disubstituted p-phenylenediamine antiozonan

Details Purification of N,N'-disubstituted p-phenylenediamine antiozonan Purification of N,N'-disubstituted p-phenylenediamine antiozonan

1977-05-18

1978-12-26

Douglas, Winston A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260566F, 260577, C07C 8526

Patent

active

041316223

ABSTRACT:
Process for purifying N,N'-disubstituted p-phenylenediamine antiozonants and oil stabilizers utilizes a steam-distillation step to remove Schiff's base derivatives of p-phenylenediamine and N-monosubstituted p-phenylenediamine as well as aldehyde and ketone contaminants and corresponding alcohols thereof.

REFERENCES:
patent: 3014967 (1961-12-01), Chapman

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