| 摘要 |
Aromatic amines, for example, diarylamines such as diphenylamine, dinaphthylamine, N-phenyl-N-naphthyl amine etc., are alkylated by passing a mixture of the amine and an olefin, though a clay catalyst in a fixed bed reactor system. The process is conveniently run as a continued process, produces an alkylated aromatic amine in excellent purity and provides efficiencies in material and energy use. |
| 主权项 |
1. A process for alkylating an aromatic amine comprising:
a) loading a fixed bed reactor with an acidic clay, b) heating or cooling the reactor to within a selected temperature range, c) passing through the acidic clay in the fixed bed reactor a mixture comprising one or more olefins selected from the group of C3-20 olefins, and an aromatic amine of formula:
ArNH2,Ar2NH,Ar3NorR2N—Ar—NR2, wherein each Ar is independently selected from the group consisting of phenyl, phenyl substituted by C1-18 alkyl, naphthyl, and naphthyl substituted by C1-18 alkyl; and each R is independently selected from the group consisting of H, C1-18 alkyl, phenyl, phenyl substituted by C1-18 alkyl, naphthyl, and naphthyl substituted by C1-18 alkyl; to yield a product wherein one or more of the groups Ar are alkylated by one or more alkyl groups derived from the C3-20 olefin. |
