# ISO 8986-1:2009 — Withdrawn and superseded ISO standards For ISO 8986-1:2009, item title is Plastics — Polybutene-1 (PB-1) moulding and extrusion materials — Part 1: Designation system and basis for specifications; status code is 9599; successor is ISO 21302-1:2019; withdrawn / published date is 2009-10-30, recorded from its source on 2026-08-05. - **Identifier:** ISO 8986-1:2009 _(verified: appears in the quote below)_ - **Item title:** Plastics — Polybutene-1 (PB-1) moulding and extrusion materials — Part 1: Designation system and basis for specifications _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 21302-1:2019 - **Withdrawn / published date:** 2009-10-30 _(verified: appears in the quote below)_ ## What the source says > 45084,IS,,ISO 8986-1:2009,Plastics — Polybutene-1 (PB-1) moulding and extrusion materials — Part 1: Designation system and basis for specifications,Plastiques — Matériaux à base de polybutène-1 (PB-1) pour moulage et extrusion — Partie 1: Système de désignation et base de spécification,2009-10-30,2,['83.080.20'],ISO/TC 61/SC 9,9599,[16515],[70504],"['en','fr','ru']",6,"
ISO 8986-1:2009 establishes a system of designation for polybutene‑1 (PB‑1) thermoplastic materials 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 property melt volume-flow ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).