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:
Jun. 23, 1981
Filed:
Oct. 30, 1979
Applicant:
Inventors:
Jean-Claude Lecoq, Chaponost, FR;
Edouard Grimaud, Saint-Genis-Laval, FR;
Assignee:
Produits Chimiques Ugine Kuhlmann, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
210721 ; 210726 ; 210737 ;
Abstract
Processes for treating the waste water, particularly waste water containing certain unsaturated compounds, from acrolein and acrylic acid production plants to reduce the chemical oxygen demand (COD), which processes comprise polymerizing the unsaturated compounds, desirably with peroxygen compounds; neutralizing the waste water with a reagent forming polyvalent metal ions to provide salts of the polymerized compounds; and separating the salts so formed.