Circular economic methods for fragrance ingredients
AssigneeInternational Flavors & Fragrances Inc.
InventorsSunitha R. Tadepalli, Paul Daniel Jones, Geatesh K. Tampy, John P. Cherkauskas
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Abstract
Disclosed is a method for converting cymene generated from renewable low value terpene streams into renewable benzene, toluene, xylenes, and cymene isomers (ortho and meta) under flow disproportionation reaction conditions, which compounds are basic building blocks for fragrance materials. This technology has potential to replace high volume petrochemical-based feedstocks with plant-based building blocks that can fill the renewability gap for key fragrance ingredients.
Claims21
A process for producing a renewable aromatic backbone compound or a mixture thereof, comprising the step of contacting a renewable cymene with a suitable catalyst under flow disproportionation reaction conditions effective to convert the cymene to the renewable aromatic backbone compound selected from the group consisting of toluene, benzene, cymene isomers, xylenes and combinations thereof,
- wherein the catalyst and flow disproportionation reaction conditions are selected so that the renewable cymene produces a mixture comprising renewable toluene and propylene.
A process for producing a renewable aromatic backbone compound or a mixture thereof, comprising the step of contacting a renewable cymene with a suitable catalyst under flow disproportionation reaction conditions effective to convert the cymene to the renewable aromatic backbone compound selected from the group consisting of toluene, benzene, cymene isomers, xylenes and combinations thereof,
- wherein the catalyst is an acidic zeolite catalyst, and the flow disproportionation reaction is carried out in the presence of an inert gas and/or a hydrogen gas.
Dependencies are inferred from the claim text.