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ISO 2453:2020

Rubber, raw styrene-butadiene, emulsion-polymerized — Determination of bound styrene content — Refractive index method

May 5, 2020

General information

90.93     Jun 10, 2025

ISO

ISO/TC 45/SC 3

International Standard

83.040.10  

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Scope

This document specifies a method for determining the bound styrene content of emulsion-polymerized styrene-butadiene rubbers (SBR) by correlation with the measured refractive index of an extracted sample according to a table of refractive indices versus percentage mass fractions styrene.
The method is also applicable to extracted oil-extended emulsion-polymerized SBR as long as it produces a film suitable for refractive index measurements. It is not applicable to solution-polymerized SBR.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 2453:1991

WITHDRAWN
ISO 2453:1991/Cor 1:2003

NOW

PUBLISHED
ISO 2453:2020
90.93 Standard confirmed
Jun 10, 2025