ISO 8986-1-2009 PDF

Full title and description

Plastics — Polybutene-1 (PB-1) moulding and extrusion materials — Part 1: Designation system and basis for specifications. This document (ISO 8986-1:2009) establishes a grade-designation system for polybutene‑1 thermoplastic materials to be used as the basis for specifications and product identification.

Abstract

ISO 8986-1:2009 defines a structured designation (data-block) system that differentiates PB‑1 grades primarily by melt volume‑flow rate (MVR) and by additional information such as basic polymer parameters, intended application or processing method, important properties, additives, colorants and fillers. It applies to butene homopolymers and to copolymers within specified monomer-content limits and to materials supplied in forms such as powder, granules or pellets. The standard provides the basis for writing material specifications but does not replace specific engineering or performance test methods.

General information

• Status: Withdrawn (standard has been superseded).
• Publication date: November 2009 (ISO 8986-1:2009, 2nd edition).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 83.080.20 (Thermoplastic materials / Plastics).
• Edition / version: Edition 2 (2009).
• Number of pages: 6 pages (ISO published PDF).

Scope

ISO 8986-1:2009 applies to polybutene‑1 (PB‑1) moulding and extrusion materials and establishes a designation system intended as a basis for material specifications. The scope covers butene‑1 homopolymers and copolymers with restricted contents of other 1‑olefins and non‑olefinic functional monomers, and applies to materials in usual commercial forms (powder, granules, pellets), whether unmodified or modified by additives, colorants or fillers. The designation system centres on the designatory property melt volume‑flow rate (MVR) together with coded blocks conveying polymer parameters, intended application/processing and key additives/properties.

Key topics and requirements

• Defined designation/data‑block structure for PB‑1 grade coding (blocks for polymer type, MVR, intended processing/application, modifiers/additives, optional additional requirements).
• Melt volume‑flow rate (MVR) used as the primary designatory property; recognized test conditions and MVR ranges are specified (test methods referenced).
• Applicability limits for monomer composition (butene homopolymers and specified copolymers) and material forms (pellets, granules, powder).
• Guidance that the designation system is a basis for specifications but does not guarantee identical performance — additional performance/processing data must be specified where required.
• Cross‑references to related parts (test specimen preparation and property determination) to ensure consistent measurement and reporting.

Typical use and users

Manufacturers and compounders of PB‑1 resins use the designation system for grade coding and product labelling; material specifiers, OEMs and procurement teams use the system when drafting material specifications and purchase orders; testing laboratories and quality/control departments use the referenced test conditions to report MVR and related designation data; standards committees and regulators use the classification to harmonize specifications. When explicit performance or processing data are required, users refer to the relevant test methods and to the later consolidated standard that replaced ISO 8986‑1:2009.

Related standards

ISO 8986‑1:2009 has been cancelled and replaced by ISO 21302‑1:2019 (Plastics — Polybutene‑1 (PB‑1) moulding and extrusion materials — Part 1: Designation system and basis for specifications), which introduces a revised designation system and updated test‑condition codings. Users specifying PB‑1 materials should consult ISO 21302‑1:2019 (and ISO 21302‑2 for specimen preparation and property determination) for the current, confirmed requirements.

Keywords

Polybutene‑1; PB‑1; plastics designation; melt volume‑flow rate (MVR); material designation system; thermoplastic materials; moulding and extrusion materials; ISO 8986‑1; ISO 21302‑1; material specification basis.

FAQ

Q: What is this standard?

A: ISO 8986‑1:2009 is (was) an ISO International Standard titled "Plastics — Polybutene‑1 (PB‑1) moulding and extrusion materials — Part 1: Designation system and basis for specifications", providing a structured system to designate PB‑1 grades.

Q: What does it cover?

A: It covers a grade‑designation system for PB‑1 thermoplastic materials, basing grade differentiation primarily on melt volume‑flow rate (MVR) and supplemented by coded information on polymer parameters, intended application/processing, important properties and additives/fillers; it applies to typical commercial forms (pellets, granules, powder). The standard defines the basis for specifications but does not substitute for application‑specific performance or processing data.

Q: Who typically uses it?

A: PB‑1 resin producers and compounders, materials engineers, OEM specifiers and procurement teams, testing and quality laboratories, and standards or regulatory bodies involved in harmonizing plastic material designations.

Q: Is it current or superseded?

A: ISO 8986‑1:2009 has been withdrawn/superseded; the current standard covering the designation system for PB‑1 is ISO 21302‑1:2019, which cancels and replaces ISO 8986‑1:2009 and introduces technical revisions to the designation system. Users should reference ISO 21302‑1:2019 for the up‑to‑date requirements.

Q: Is it part of a series?

A: Yes — ISO 8986 originally consisted of at least two parts: Part 1 (designation system and basis for specifications) and Part 2 (preparation of test specimens and determination of properties). The replacement series under ISO 21302 likewise references Part 2 for test methods and specimen preparation.

Q: What are the key keywords?

A: Polybutene‑1, PB‑1, melt volume‑flow rate (MVR), designation system, material specification, thermoplastic, moulding, extrusion, ISO 8986‑1, ISO 21302‑1.