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Content DescriptionThis 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. About ISOISO, the International Organization for Standardization, brings global experts together to agree on the best way of doing things – for anything from making a product to managing a process. As one of the oldest non-governmental international organizations, ISO has enabled trade and cooperation between people and companies all over the world since 1946. The International Standards published by ISO serve to make lives easier, safer and better. |
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