Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1985-12-20
1986-12-30
Shaver, Paul F.
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
C07C 8526
Patent
active
046330186
ABSTRACT:
This invention comprises a process for separating 2,4-toluenediamine from a feed mixture comprising 2,4-toluenediamine and at least one isomer thereof, which process comprises contacting the mixture at adsorption conditions with an adsorbent comprising a Y type zeolite cation-exchanged with a Ni or Ca cation or an X type zeolite cation-exchanged with a cation from the group Na, Ni and K, thereby selectively adsorbing the 2,4-toluenediamine or an L type zeolite cation-exchanged with a K cation, or an X type zeolite cation exchanged with a Ba cation, thereby selectively adsorbing the 2,6-toluenediamine. The remainder of the feed mixture is removed from the adsorbent and the adsorbed toluenediamine isomer is recovered by desorption at desorption conditions with a desorbent material comprising a lower alcohol or an amine.
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Hall Jack H.
McBride Thomas K.
Shaver Paul F.
Spears Jr. John F.
UOP Inc.
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