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:
Dec. 08, 2015
Filed:
Dec. 12, 2013
Basf SE, Ludwigshafen, DE;
Tobias Johannes Korn, Ludwigshafen, DE;
Peter Zurowski, Landau, DE;
Thorsten Friese, Mannheim, DE;
Sylke Haremza, Neckargemuend, DE;
Ulrich Jaeger, Roemerberg, DE;
Steffen Rissel, Kirchheim, DE;
Volker Schliephake, Schifferstadt, DE;
BASF SE, Ludwigshafen, DE;
Abstract
In a method of stabilizing acrylic compounds, a liquid phase containing at least one acrylic compound is mixed with at least one metal and at least one ligand. The acrylic compound can be acrylic acid, methacrylic acid, and their respective esters. The metal can be copper, manganese, and cerium. The ligand can be a quinoline compound of formula (I), an N-oxide of a compound of formula (I), 2,2″-bis(2,3-dihydro-3-oxoindolylidene), or an aliphatic y-dentate ligand with y being 2-6 and comprising at least two nitrogen atoms joined by aliphatic or aromatic C-Cbridges comprising y-2 further coordinating nitrogen atoms or heteroatoms: where X is OH, NH, O—(C-C)-alkyl, O—C(O)—(C-C)-alkyl, or O—C(O)-phenyl; Ris H, or (C-C)-alkyl; Ris H, (C-C)-alkyl, Cl, Br, or SOH; and Ris H, Cl or Br.