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:
Jul. 14, 2026
Filed:
Mar. 11, 2022
Basf SE, Ludwigshafen am Rhein, DE;
Andreas Keller, Ludwigshafen am Rhein, DE;
Hans Hasse, Kaiserslautern, DE;
Rupert Wagner, Ludwigshafen am Rhein, DE;
Bernhard Brunner, Ludwigshafen am Rhein, DE;
Matthias Schult, Ludwigshafen am Rhein, DE;
Stephan Maurer, Ludwigshafen am Rhein, DE;
Heiko Hallmann, Ludwigshafen am Rhein, DE;
Maximilian Dyga, Kaiserslautern, DE;
BASF SE, Ludwigshafen am Rhein, DE;
Abstract
A process for recovering isoprenol essentially free of formaldehyde from a stream of crude isoprenol containing isoprenol, water and formaldehyde, the process comprising subjecting the stream of crude isoprenol or an isoprenol containing fraction thereof to distillation in a low-boiler separation tower operated at a pressure of 2.5 bara or higher to obtain a distillate stream containing aqueous formaldehyde and a bottoms stream containing isoprenol. The process of the invention allows for obtaining isoprenol essentially free of formaldehyde. Further provided is a plant for recovering isoprenol essentially free of formaldehyde from a stream of crude isoprenol containing isoprenol, water and formaldehyde, the plant comprising a first low-boiler separation tower, a second low-boiler separation tower, and a finishing tower.