International Standard
ISO 11235:2023
Rubber compounding ingredients — Sulfenamide accelerators — Test methods
Reference number
ISO 11235:2023
Edition 3
2023-07
International Standard
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ISO 11235:2023
84883
Published (Edition 3, 2023)

ISO 11235:2023

ISO 11235:2023
84883
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CHF 129
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Abstract

This document specifies the methods to be used for the evaluation of sulfenamide accelerators:

     MBTS: benzothiazyl disulphide;

     CBS: N-cyclohexylbenzothiazole-2-sulfenamide;

     TBBS: N-tert-butylbenzothiazole-2-sulfenamide;

     DIBS: N,N'-diisopropylbenzothiazole-2-sulfenamide;

     DCBS: N,N'-dicyclohexylbenzothiazole-2-sulfenamide;

     MBS: N-oxydiethylenebenzothiazole-2-sulfenamide.

NOTE 1        Although MBTS is not a sulfenamide, it is the primary decomposition product of these accelerators and quantitatively determined by the method specified in 5.2.

The analytical methods are applicable for most commercial sulfenamide accelerators:

     sulfenamides of primary amines (type I);

     sulfenamides of unhindered secondary amines (type II);

     sulfenamides of hindered secondary amines (type III).

NOTE 2        Classification and key properties of sulfenamide accelerators are described in Annex A.

The method (5.2) to determine purity by high performance liquid chromatography (HPLC) is the preferred method.

General information

  •  : Published
     : 2023-07
    : International Standard published [60.60]
  •  : 3
     : 26
  • ISO/TC 45/SC 3
    83.040.20 
  • RSS updates

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