ISO 2322-2023 PDF

Full title and description

ISO 2322:2023 — Styrene-butadiene rubber (SBR) — Emulsion- and solution-polymerized types — Evaluation procedures. This international standard specifies agreed test procedures, standard materials and formulations, and equipment and processing methods used to evaluate the physical, chemical and vulcanization characteristics of emulsion‑ and solution‑polymerized SBRs (including oil‑extended types), for use in quality control, product development and comparative assessment of raw rubbers and compounds.

Abstract

This document specifies physical and chemical tests on raw SBRs and defines standard materials, standard test formulations, equipment and processing methods for evaluating the vulcanization characteristics of emulsion‑ and solution‑polymerized styrene‑butadiene rubbers, including oil‑extended rubbers. It applies to the SBR types listed in the standard's Table 1 that are normally used in vulcanized form.

General information

• Status: Published
• Publication date: 2 May 2023
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 83.060 (Rubber and rubber products)
• Edition / version: Edition 7 (2023)
• Number of pages: 17

Key bibliographic and lifecycle details as published by ISO (publication stage: International Standard published).

Scope

ISO 2322:2023 applies to emulsion‑ and solution‑polymerized styrene‑butadiene rubbers (SBR) that are normally used in vulcanized form. The standard defines which SBR types are covered (see Table 1 in the publication) and provides standardized physical and chemical test methods, reference materials, standard test formulations and processing and measurement procedures to evaluate vulcanization behaviour and related properties for quality control and comparative testing.

Key topics and requirements

• Defined physical and chemical tests on raw SBR (composition and property checks).
• Standard materials and reference formulations for comparative evaluation.
• Standardized equipment and processing methods for preparing and testing samples.
• Procedures to evaluate vulcanization characteristics (cure behaviour) of SBR and oil‑extended SBRs.
• Guidance on sample conditioning, test formulation choice and interpretation for comparative quality assessment.

Typical use and users

ISO 2322:2023 is used by rubber producers, compound formulators, independent test laboratories, R&D teams and OEM quality departments (for example in tire, hose, belt, seal and general rubber goods manufacture) that need standardized methods to compare batches, qualify raw SBR grades and assess vulcanization and processing behaviour under agreed conditions.

Related standards

Standards commonly used alongside ISO 2322 include other ISO test methods for rubber such as ISO 289‑1 / ISO 289‑2 (Mooney viscosity and pre‑vulcanization characteristics), ISO 3417 / ISO 6502 series (measurement of vulcanization characteristics with curemeters) and ISO 37 (tensile properties of vulcanized rubber). ISO 2322:2023 replaces the earlier ISO 2322:2014 edition.

Keywords

Styrene‑butadiene rubber; SBR; emulsion‑polymerized; solution‑polymerized; vulcanization; cure characteristics; Mooney viscosity; oil‑extended rubber; rubber testing; ISO 2322

FAQ

Q: What is this standard?

A: ISO 2322:2023 is an International Standard that specifies evaluation procedures (tests, formulations, equipment and processing methods) for emulsion‑ and solution‑polymerized styrene‑butadiene rubbers (SBRs), including oil‑extended types.

Q: What does it cover?

A: It covers physical and chemical tests on raw SBR, standard test materials and formulations, and standardized procedures for assessing vulcanization/cure characteristics and related evaluation methods for the SBR types listed in the standard.

Q: Who typically uses it?

A: Rubber manufacturers, compounders, laboratory technicians, product developers and quality assurance teams in industries that use SBR (tires, hoses, belts, seals, general rubber goods) use this standard for consistent evaluation and comparison.

Q: Is it current or superseded?

A: Current — ISO 2322:2023 was published on 2 May 2023 and supersedes the withdrawn ISO 2322:2014 edition.

Q: Is it part of a series?

A: It is part of the body of ISO standards covering rubber testing and materials (ICS 83.060) and is typically used together with other ISO rubber test standards such as ISO 289 (Mooney viscosity), ISO 3417 / ISO 6502 (curemeter methods) and ISO 37 (tensile testing).

Q: What are the key keywords?

A: Styrene‑butadiene rubber, SBR, emulsion‑polymerized, solution‑polymerized, vulcanization, cure characteristics, oil‑extended, Mooney viscosity, rubber testing, standard test formulations.