Polypropylene is generally strong and flexible, especially when copolymerized with ethylene.Therefore, polypropylene can be used as an engineering plastic.Polypropylene is an economical material that can be made translucent when colorless, but is not as easily made transparent as polystyrene, acrylic, or other plastics.It is usually opaque or colored with pigments.Polypropylene has good fatigue resistance   Read More>