Back to results
US 4,308,211 AGranted
Process for the preparation of anthraquinone
AssigneeThe Goodyear Tire & Rubber Company
InventorsLawson G. Wideman, Lynn A. Bente
Life of this patent
Estimating the term…
Abstract
A process for the preparation of anthraquinone from 1, 4, 4a, 5, 8, 8a, 9a, 10a-octahydroanthraquinone (OHAQ) which comprises contacting OHAQ as a melt with a catalyst.
Claims5
A process for the preparation of anthraquinone which is characterized by:
- contacting, at a temperature not greater than 330.degree. C. for no longer than ten minutes, 1, 4, 4a, 5, 8, 8a, 9a, 10a -octahydroanthraquinone (OHAQ) as a melt with a catalyst, the weight ratio of said OHAQ to said catalyst being no greater than 10,000 to 1, said catalyst being selected from the group consisting of group 8 metals of the Periodic Table or, oxides thereof unsupported on an inert carrier and Group 8 metals of the Periodic Table or oxides thereof supported on an inert carrier and separating the anthraquinone from the undesirable reaction products.
Dependencies are inferred from the claim text.