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ISO 11235:2023

Current Revision

Rubber compounding ingredients - Sulfenamide accelerators - Test methods

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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.


SDO ISO: International Organization for Standardization
Document Number ISO 11235
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO/TC 45/SC 3
Publish Date Document Id Type View
Not Available ISO 11235:2023 Revision