ISO INTERNATIONAL STANDARD 21302-1 First edition 2019-05 Plastics — Polybutene-1 (PB-1) moulding and extrusion materials - Part 1: Designation system and basis for specifications Plastiques - Matériaux a base de polybutene-1 (PB-1) pour moulage etextrusion- Partie 1: Systeme de désignation et base de spécifications Reference number ISO 21302-1:2019(E) so @ IS0 2019 IS0 21302-1:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ ISO 2019 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either IsO at the address below or Iso's member body in the country of the requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 0111 Fax: +41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2019 - All rights reserved IS0 21302-1:2019(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references 3 Terms and definitions 4 Designation and specification system 2 4.1 General .2 4.2 Data block 1 4.3 Data block 2 .3 4.4 Data block 3 4.5 Datablock 4 4 4.5.1 General ..4 4.5.2 Melt volume-flow rate .4 4.6 Data block 5 ..5 5 Examples of designations. .6 Bibliography 7 @ IS0 2019 - All rights reserved iii