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:
Oct. 22, 2019
Filed:
Sep. 05, 2017
Applicant:
Oxea Gmbh, Monheim, DE;
Inventors:
Guido D. Frey, Mülheim, DE;
Melanie Bothe, Düsseldorf, DE;
Heinz Strutz, Moers, DE;
William E. Slinkard, Richmond, TX (US);
Assignee:
OXEA GMBH, Monheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 29/38 (2006.01); C07C 31/22 (2006.01); C07C 31/20 (2006.01);
U.S. Cl.
CPC ...
C07C 29/38 (2013.01); C07C 31/20 (2013.01); C07C 31/22 (2013.01);
Abstract
The present invention relates to a process for simultaneously consecutive preparation of polyols by base-catalyzed reaction of at least two different mid-chain aldehydes with formaldehyde. The simultaneous consecutive mode of operation makes it possible to achieve high conversions and high selectivities for both aldehydes, with additional achievement of a distinct reduction in the amount of unreacted formaldehyde remaining. This leads to improved process economics, since the energy costs for workup of the formaldehyde stream are distinctly reduced.