Production of terephthalic acid via reductive coupling of propiolic acid or propiolic acid derivatives
AssigneeThe Procter & Gamble Company
InventorsJeffrey Charles Hayes, Hairong Guan, Dimitris Ioannis Collias
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Abstract
A method of making terephthalic acid via reductive coupling of two molecules of propiolic acid or propiolic acid derivatives is presented. The reductive coupling can be catalyzed by compounds comprising metals, and propiolic acid or propiolic acid derivatives can be produced from acetylene and carbon dioxide. At least 4 of the 8 carbons in the terephthalic acid are non-fossil-derived.
Claims14
A method of making terephthalic acid comprising reductive coupling of two molecules of propiolic acid or propiolic acid derivatives followed by reaction with ethylene and dehydrogenation, wherein said reductive coupling comprises a catalyst, and wherein said catalyst comprises a metal selected from the group consisting of zinc, molybdenum, ruthenium, nickel, iron, cobalt, copper, palladium, and mixtures thereof.
A method of making terephthalic acid comprising reductive coupling of two molecules of propiolic acid or propiolic acid derivatives followed by reaction with acetylene, wherein said reductive coupling comprises a catalyst, and wherein said catalyst comprises a metal selected from the group consisting of zinc, molybdenum, ruthenium, nickel, iron, cobalt, copper, palladium, and mixtures thereof.
Dependencies are inferred from the claim text.