Patent ID: 9617201
Date: 2017-04-11
CPC Classifications: C07C,Y02P

Claim:
1. A process for alkylating an aromatic amine comprising: a) loading a tubular fixed bed reactor with an acidic bentonite clay, b) heating or cooling the reactor at a temperature in a range of from about 140° C. to about 180° C., c) pumping through the acidic bentonite clay in the fixed bed reactor a liquid mixture of diphenylamine and a mixture of propylene oligomers comprising tri-propylene and/or tetra-propylene to yield a mixture of alkylated aromatic amines comprising less than 1% by weight, based on all aromatic amines present, of diphenylamine, about 15% to about 30%, of mono-alkyldiphenyl amine; 60% to about 80%, di-alkyldiphenyl amine; and 0.5 to about 10% of tri-alkyldiphenyl amine.