This standard is included in DIN Handbook KUNSTSTOFFE BAND 3 and BAND 2. Addresses a system of designation for polybutene thermoplastic material which may be used as the basis for specifications. The types of polybutene plastics are differentiated from each other by a classification system based on appropriate levels of the designatory properties: a) density b) melt flow rate and on information about basic polymer parameters, intended application and/or method of processing, important properties, colorants, fillers, additives and reinforcing materials.