Alkylation of toluenediamine and para-phenylenediamine with isob

Details Alkylation of toluenediamine and para-phenylenediamine with isob Alkylation of toluenediamine and para-phenylenediamine with isob

1988-06-30

1990-10-30

Raymond, Richard L.

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

Organic compounds

Amino nitrogen containing

564409, C07C20500, C07C20700, C07C 4500

Patent

active

049670018

ABSTRACT:
This invention relates to an improvement in a process for producing tert-butyl-derivatives of aromatic amines, e.g., para-phenylenediamine and toluenediamine by the reaction of isobutylene with the corresponding aromatic diamine in the presence of a highly acidic crystalline alumino-silicate catalyst. The improvement constitutes adding sufficient water to the catalyst to provide at least partial saturation of the catalyst during the reaction.

REFERENCES:
patent: 3670030 (1972-06-01), Sparks
patent: 4745223 (1988-05-01), Burgoyne, Jr. et al.

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