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. 29, 2025
Filed:
Aug. 18, 2020
Applicant:
Arkema France, Colombes, FR;
Inventors:
Michel Fauconet, Saint Avold, FR;
Gullu Isik, Saint Avold, FR;
Assignee:
Arkema France, Puteaux, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 1/72 (2023.01); C02F 1/04 (2023.01); C02F 101/34 (2006.01);
U.S. Cl.
CPC ...
C02F 1/722 (2013.01); C02F 1/048 (2013.01); C02F 2101/34 (2013.01);
Abstract
The present invention relates to a process for the treatment of wastewater containing formaldehyde. In particular, the invention relates to a process for the treatment of liquid effluents resulting from the manufacture of acrylic acid or acrolein, which is targeted at removing the formaldehyde present in these effluents. Finally, the invention relates to the use of the purified aqueous solution thus obtained in process for the production of acrylic acid by catalytic oxidation of propylene and/or propane.