Rubber compounding ingredients. Sulfenamide accelerators. Test methods
Rubber compounding ingredients. Sulfenamide accelerators. Test methods
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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);
Другие стандарты BS