Purification of N,N-di-2-naphthyl-p-phenylenediamine using a mix

Details Purification of N,N-di-2-naphthyl-p-phenylenediamine using a mix Purification of N,N-di-2-naphthyl-p-phenylenediamine using a mix

1974-05-16

1976-03-02

Horwitz, D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 8758

Patent

active

039418430

ABSTRACT:
Dark colored impurities, 2-aminonaphthalene and 2-naphthol are extracted from crude N,N'-di-2-naphthyl-p-phenylenediamine by contacting with a mixed solvent system comprising (A) at least one compound selected from the group consisting of alkanols and alkanediols and (B) at least one alkylated benzene.

REFERENCES:
patent: 1813609 (1931-07-01), Clifford
patent: 1885355 (1932-10-01), Jones

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