ISO 11235:2023
2023-07
Abstract
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 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.
General information
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Status: PublishedPublication date: 2023-07Stage: International Standard published [60.60]
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Edition: 3Number of pages: 26
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Technical Committee :ISO/TC 45/SC 3ICS :83.040.20
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WithdrawnISO 11235:2016
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