1 This International Standard specifies the methods to be used for the evaluation of sulfenamide accelerators.
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)
2.1 MBTS: Benzothiazyl disulfide
NOTE Although MBTS is not a sulfenamide, it is the primary decomposition product of these accelerators and quantitatively determined by the method specified in 4.2.
2.2 CBS: N-cyclohexylbenzothiazole-2-sulfenamide
2.3 TBBS: N-tert-butylbenzothiazole-2-sulfenamide
2.4 DIBS: N,N'-diisopropylbenzothiazole-2-sulfenamide
2.5 DCBS: N,N'-dicyclohexylbenzothiazole-2-sulfenamide
2.6 MBS: N-oxydiethylenebenzothiazole-2-sulfenamide