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US 10,875,823 B2Granted
Method for producing N-methyl-p-toluidine for use as an additive for aviation gasoline
AssigneeLANXESS Deutschland GmbH
InventorsMartina Gerdinand, Rainer Dost, Ralf Krahwinkel, Hans-Jurgen Quella, Daniel Ullrich, Patrick Kurr
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Abstract
The invention relates to novel methods for preparing N-methyl-p-toluidine for the use thereof as additive for aviation fuel, and to specific catalysts for these methods.
Claims12
A method for preparing N-methyl-p-toluidine, comprising:
- reacting p-toluidine with methanol in the presence of at least one catalyst, wherein the at least one catalyst comprises, in the following proportions,
- Cu:
- 45.5-68.0% by weight,
- Zn:
- 12.3-22.5% by weight,
- Al:
- 1.9-4.1% by weight,
- and 7.8-28.2% by weight of oxygen, wherein Cu, Zn, Al and oxygen comprise at least 99% by weight, of the total amount of the catalyst.
5 more elements
Dependencies are inferred from the claim text.