The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 05, 2013
Filed:
Dec. 22, 2008
Applicant:
Veli-matti Purola, Hamari, FI;
Inventor:
Veli-Matti Purola, Hamari, FI;
Assignee:
Borealis Technology Oy, Ponvoo, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 37/80 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for the removal of by-products from a phenolic mixture, which process may include the following steps: subjecting a phenolic mixture to extractive distillation to produce an initial phenolic mixture, contacting the initial phenolic mixture containing phenol and one or more by products with a catalyst to produce a first purified phenol product mixture, and distilling the first purified phenol product mixture to produce a second purified phenol product mixture; wherein the extractive distillation is carried out in two columns, a higher pressure column and a lower pressure column.