Abstract: A thermoplastic polyurethane composition includes a first thermoplastic polyurethane compound and a modifier formed by subjecting a modifier-forming mixture to a thermal mixing process. The modifier-forming mixture includes a second thermoplastic polyurethane compound, a copolyester modifying agent, and a compatibilizer. The copolyester modifying agent is present in an amount ranging from 5 wt % to 30 wt %, and the compatibilizer is present in an amount ranging from 0.5 wt % to 5 wt %, based on a total weight of the thermoplastic polyurethane composition. A dyeable fiber made from and a method for preparing the thermoplastic polyurethane composition are also disclosed.

Abstract: A polypropylene composition for a dyeable polypropylene filament yarn includes a polypropylene having a melt flow rate ranging from 30 g/10 min to 40 g/10 min, a polyester serving to modify the polypropylene and having a melt flow rate ranging from 40 g/10 min to 50 g/10 min, and a compatibilizer serving to improve compatibility between the polypropylene and the polyester. The polypropylene composition has a melt flow rate ranging from 30 g/10 min to 40 g/10 min.

Abstract: A polypropylene composition for a dyeable polypropylene filament yarn includes a polypropylene having a melt flow rate ranging from 30 g/10 min to 40 g/10 min, a polyester serving to modify the polypropylene and having a melt flow rate ranging from 40 g/10 min to 50 g/10 min, and a compatibilizer serving to improve compatibility between the polypropylene and the polyester. The polypropylene composition has a melt flow rate ranging from 30 g/10 min to 40 g/10 min.