Method of producing benzophenoneimines
AssigneeBASF SE
InventorsThilo Hahn, Frank Haese, Ulrich Köhler, Ekkehard Schwab, Johann-Peter Melder, Jan Eberhardt
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Abstract
A process for the preparation of benzophenonimine (BPI) of the general formula I where R1 and R2 are C1- to C4-alkoxy, C1- to C2-alkylamine and C2- to C4-dialkylamine and m and n are integers from 0 to 5 and R1 and R2, independently of one another, may be identical or different, by reacting benzophenone (BP) of the general formula II where R1, R2, m and n have the abovementioned meanings, in ammonia and in the presence of titanium dioxide, the titanium dioxide being present substantially in the anatase modification.
Claims7
A process for preparing benzophenonimine of general formula (I)
- wherein
- R1 and R2
- are, identically or differently and independent of one another, C1- to C4-alkoxy, C1- to C2-alkylamine, or C2- to C4-dialkylamine, and
- m and n
- are integers from 0 to 5
- comprising reacting benzophenone of general formula (II)
- wherein R1, R2, m, and n are as defined above, with ammonia in the presence of titanium dioxide, wherein said titanium dioxide is present substantially in the anatase modification.
Dependencies are inferred from the claim text.