COPOLYCONDENSATE NOVEL HIGH MOLECULAR WEIGHT COPOLYARYLENE SULFIDE BRANCHED ACCORDING CIRCUMSTANCES, PRODUCTION AND USE THEREOF

摘要

The novel high-molecular-weight, optionally branched copolyarylene sulphides are prepared by reacting haloaromatic compounds and dihalophenylpyrazol-3-ones in a polar solvent in the presence of 0.2-100 mol %, based on the dihaloaromatic compounds, of an amino acid, and are used as encapsulating compositions for electronic components.