ISO 11235:2023
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 1Â Â Â Â Â Â Â 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.
OEN:
ISO
Langue:
English
Code(s) de l'ICS:
83.040.20
Statut:
Publié
Date de Publication:
2023-07-23
Numéro Standard:
ISO 11235:2023