Process for surface treatment of N-alkyl-N'phenyl-p-phenylenedia

Details Process for surface treatment of N-alkyl-N'phenyl-p-phenylenedia Process for surface treatment of N-alkyl-N'phenyl-p-phenylenedia

1989-12-07

1991-11-26

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

71 6403, 71 6404, 71 6405, 71DIG1, 534887, C07C20982, C07C21155

Patent

active

050684388

ABSTRACT:
N-Alkyl-N'-phenyl-p-phenylenediamine particles, which are not easily broken during transportation or in a hopper and can be easily automatically metered, are prepared by a surface treating process wherein granulated N-alkyl-N'-phenyl-p-phenylenediamine particles are charged in a rotatable vessel and the vessel is then rotated at a temperature lower than the melting point of the N-alkyl-N'-phenyl-p-phenylenediamine, to cause the N-alkyl-N'-phenyl-p-phenylenediamine particles to freely flow.

REFERENCES:
patent: 1891891 (1932-12-01), Luft et al.
patent: 2436771 (1948-02-01), Hood
patent: 4554004 (1985-11-01), Bierman et al.
Sumitomo Chemical "Chemical Abstracts" No. 111,121n, vol. 97, (1982).

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