Patent ID: 9067863
Filing Date: 2015-06-30
Classification: C04B,C07C,C07D

Abstract:
1. A process for preparing amines which comprises reacting sorbitol with hydrogen and an aminating agent selected from the group of ammonia, methylamine, dimethylamine, ethylamine, diethylamine, n-propylamine, di-n-propylamine, isopropylamine, diisopropylamine, isopropylethylamine, n-butylamine, di-n-butylamine, s-butylamine, di-s-butylamine, isobutylamine, n-pentylamine, s-pentylamine, isopentylamine, n-hexylamine, s-hexylamine, isohexylamine, cyclohexylamine, aniline, toluidine, piperidine, morpholine, and pyrrolidine in the presence of a catalyst at a temperature of from 100° C. to 400° C. and a pressure of from 1 to 40 MPa, wherein a reaction effluent is obtained which comprises one or more monoamines selected from the group consisting of methylamine, ethylamine, isopropylamine and n-propylamine, and/or one or more diamines selected from the group consisting of ethylenediamine, 1,2-propanediamine and 1,3-propanediamine, 1,2-butanediamine, 1,3-butanediamine, 1,4-butanediamine and/or one or more alkanolamines selected from the group consisting of monoethanolamine, 2-aminopropan-1-ol and 1-aminopropan-2-ol, and/or one or more sugar alcohol-like specialty amines selected from the group consisting of 1,2,3-triaminopropane, 1,3-diaminopropan-2-ol, 1,2-diaminopropan-3-ol, 1-aminopropanediol, 2-aminopropanediol, glucosamine and isomaltine and/or piperazine, and/or one or more piperazine derivatives selected from the group consisting of 2-methylpiperazine, 2,6-dimethylpiperazine, 2,5-dimethylpiperazine, 2,5-bis(aminomethyl)piperazine, 2,6-bis(aminomethyl)piperazine, 2-aminomethyl-5-methylpiperazine and 2-aminomethyl-6-methylpiperazine.