ÖNORM EN ISO 1873-1

This part of ISO 1873 establishes a System of designation for polypropylene (PP) thermoplastic material, which may be used as the basis for specifications. The types of polypropylene plastics are differentiated from each other by a classification System based on appropriate levels of the designatory properties a) tensile modulus of elasticity b) impact strength c) melt mass-flow rate (MFR) and on information about basic polymer Parameters, intended application and/or method of processing, important properties, additives, colorants, fillers and reinforcing materials. This part of ISO 1873 is applicable to all propylene homopolymers and to copolymers of propylene with a content of other 1-olefins of less than 50 % (m/m), as well as blends of polymers containing at least 50 % (dm) of aforementioned polymers. It applies to materials ready for normal use in the form of powder, granules or pellets and to materials unmodified or modified by colorants, additives, fillers, etc. This part of ISO 1873 does not apply to propylene-based rubber.