| 摘要 |
<p>Polymer salts whose anionic component is a polyester comprising the product of the reaction of the individual components a), b) and c) and optionally d) and optionally e), where a) is a dicarboxylic acid or a reactive derivative of a dicarboxylic acid containing no sulpho groups, b) is a difunctional aromatic, aliphatic or cycloaliphatic sulpho compound whose functional groups are hydroxyl or carboxyl or hydroxyl and carboxyl, c) is an aliphatic, cycloaliphatic or aromatic diol, a polyether diol or a polycarbonate diol, d) is a polyfunctional compound (functionality > 2) whose functional groups are hydroxyl or carboxyl or hydroxyl and carboxyl, and e) is a monocarboxylic acid, and whose cationic component comprises hydrogen atoms, metal cations, substituted ammonium cations, immonium cations, guanidinium cations, phosphonium, arsonium or stibonium cations or a mixture of said cations, are suitable as charge-control agents and charging improvers in electrophotographic toners and developers, in triboelectrically or electrokinetically sprayable powder coatings (paints), in electret materials and for electrostatic separation of polymers and salt minerals.</p> |
