Dimer

Name:
Dimer
Detailed information:
An oligomer whose molecule is composed of two molecules of the same chemical composition. For example, 1,4-dioxane is a dimer of ethylene oxide. A dimer acid is a high molecular-weight dibasic acid that is liquid (viscous), stable, and resistant to high temperatures, and polymerizes with alcohols and polyols to yield a variety of products such as plasticizers, lubricating oils, hydraulic fluids. It is produced by dimerization of unsaturated fatty acids at mid-molecule and usually contains 36 carbons. Trimer acid, which contains three carboxyl groups and 54 carbons, is similar.See Polymer.