| 摘要 |
A polymer comprises: (a) at least one monomer residue of an aromatic dicarboxylic acid, wherein a side chain is attached from the aromatic ring and is described by formula (I) wherein Q is a substituent having a hydrophilic group, a hydrophobic group, or mixtures of; (b) at least one monomer residue of an aromatic dicarboxylic acid, an aliphatic dicarboxylic acid, or mixtures thereof; and (c) at least one monomer residue of an aromatic alcohol, an aliphatic alcohol, or mixtures thereof; wherein the monomer residues of (a), (b), and (c) are arranged to form the backbone of the polymer, and wherein the side chain of formula (I) is a pendant group extending from the polymer backbone. Preferably the polymers are polyesters containing trimellitic acid having pendant polyoxyethylene side chains. They are used as surfactants in emulsion polymerizations. |
