| abstract |
Disclosed is a method of preparing amines of general formula (I), in which R<1>, R<2>, R<3>, R<4>, R<5> and R<6> are hydrogen, C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkinyl, C3-C20 cycloalkyl, C4-C20 alkylcycloalkyl, C4-C20 cycloalkylalkyl, aryl, C7-C20 alkylaryl or C7-C20 aralkyl, R<1> and R<2> together form a saturated or unsaturated C3-C9 alkylene di-chain and R<3> or R<5> is C21-C200 alkyl or C21-C200 alkenyl or R<3> and R<5> together form a C2-C12 alkylene di-chain, by reacting olefins of general formula (II), in which R<3>, R<4>, R<5> and R<6> are as defined above, with ammonia or primary or secondary amines of general formula (III), in which R<1> and R<2> are as defined above, at temperatures of 200 to 350 DEG C and pressures of 100 to 300 bar in the presence of a zeolite catalyst, a boron beta -zeolite being used as the catalyst. |