BS ISO 11235:2016 PDF

1   Scope This International Standard 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 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);