Diphenylamine alkylated with olefin mixtures containing...

Details Diphenylamine alkylated with olefin mixtures containing... Diphenylamine alkylated with olefin mixtures containing...

2007-03-13

2007-03-13

Barts, Samuel (Department: 1621)

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

Organic compounds

Amino nitrogen containing

Reexamination Certificate

active

10815578

ABSTRACT:
Disclosed herein is a process for the preparation of alkylated diarylamines comprising adding to said diarylamine an olefin mixture containing highly reactive fractions, as well as fractions exhibiting a relatively lower chemical reactivity, in the presence of an acidic clay catalyst at a temperature low enough to prevent substantial deactivation of the catalyst until the addition is complete and then increasing the temperature to increase the alkylation rate of the less reactive fractions.

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Chuev et al (Toereticheskaa I Eksperimental'naya Khimyiya (1985), 21(3), 321-328).

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