BS EN ISO 21302-1:2019

What is the ISO 21302-1 - Designation system for Polybutene-1 (PB-1) about?  

ISO 21302-1 establishes a system of designation for polybutene-1 (PB-1) thermoplastic materials which can 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 property melt volume-flow rate, and on information about basic polymer parameters, intended application, and/or method of processing, important properties, additives, colorants, fillers, and reinforcing materials. 

ISO 21302-1 is applicable to all butene-1 homopolymers, and to copolymers of butene-1 with a maximum content of other 1-olefinic monomers of less than 50 g/kg (mass fraction), and with a content of non-olefinic monomers with functional groups up to a maximum of 3 g/kg (mass fraction).  

Who is ISO 21302-1 Designation system for Polybutene-1 (PB-1) for? 

ISO 21302-1 on designation system of Polybutene-1 (PB-1) is useful for: 

• Polybutene-1 (PB-1) manufacturer 
• Polybutene-1 (PB-1) testing laboratories 
• Industrial parts 
• Medical devices 
• Electrical/electronics 
• Chemical processing 
• Automotive under-hood applications 

Why should you use ISO 21302-1 Designation system for Polybutene-1 (PB-1)?  

ISO 21302-1 provides you with the guidelines for reliable designation system for polybutene-1 (PB-1). ISO 21302-1 specifies the types of polybutene plastics, and the basis of difference. 

You can use ISO 21302-1 for materials ready for normal use in the form of powder, granules or pellets, unmodified or modified by colorants, additives, fillers, etc. 

What’s changed since the last update?  

BS EN ISO 21302-1:2019 supersedes ISO 89861:2009. BS EN ISO 21302-1:2019 includes some technical changes with respect to ISO 89861:2009. These include: 

• The order of the designation block number in the designation, and specification system has been changed 
• The code-letters used in data block 3 in positions 2 to 8 have been added, and the elevated heat performance is expressed in J 
• 190 °C/21,0 kg has been added to the sets of conditions which can be used for the measurement of the melt volume flow rate (MVR); the test conditions for the MVR are specified: the test condition D (190 °C/2,16 kg), the test condition T (190 °C /5,0 kg), the test condition F (190 °C /10,0 kg), and the test condition G (190 °C /21,6 kg) 
• The content of non-olefinic monomers with functional groups up to a maximum of 1 % by mass in polybutene-1 has been increased to 3 % 
• The MVR filing range, and its corresponding code have been added