Dynapol S 394 Thermoplastic copolyester Degussa Polyester ADHESIVE >> Hot-melt Dynapol High molecular weight thermoplastic copolyester. Used as a raw material for hot melt industrial adhesives. Offers low water uptake. Highly crystalline copolyester short open times high heat resistance good solvent and chemical resistance Dynapol S 394 Provides adhesion to paper and cardboard. High molecular weight, highly crystalline, thermoplastic copolyester. Used as a raw material for hot melt industrial adhesives. Offers low water uptake. Provides short open time, high heat resistance, good solvent and chemical resistance, and adhesion to paper and cardboard.