METHOD OF STABILIZING POLYMERIZABLE COMPOUNDS

摘要

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 C1-C4 bridges comprising y-2 further coordinating nitrogen atoms or heteroatoms:;;where X is OH, NH2, O—(C1-C4)-alkyl, O—C(O)—(C1-C4)-alkyl, or O—C(O)-phenyl; R1 is H, or (C1-C4)-alkyl; R2 is H, (C1-C4)-alkyl, Cl, Br, or SO3H; and R3 is H, Cl or Br.

主权项

1. A method of stabilizing acrylic compounds, comprising admixing a liquid phase comprising at least one acrylic compound selected from the group consisting of acrylic acid, methacrylic acid and a respective ester thereof with at least one metal selected from the group consisting of copper, manganese and cerium and also at least one ligand selected from the group consisting of quinoline compounds of formula (I): N-oxides of compounds of formula (I), 2,2′-bis(2,3-dihydro-3-oxoindolylidene), and aliphatic y-dentate ligands having y=2-6 and comprising at least two nitrogen atoms joined by aliphatic or aromatic C1-C4 bridges comprising y-2 further coordinating nitrogen atoms or heteroatoms,
wherein
X is OH, NH2, O—C1-C4-alkyl, O—C(O)—C1-C4-alkyl, O—C(O)—C2H5 or O—C(O)-phenyl,R1 is H, or (C1-C4)-alkyl,R2 is H, C1-C4-alkyl, Cl, Br or SO3H, andR3 is H, Cl or Br.