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CBS-80
80% N-cyclohexyl-2-benzothiazyl sulphenamide
Specification:
Composition 80% N-cyclohexyl-2-benzothiazyl sulphenamide; Appearance Off white to grey granules Density, 20 °C approx. 1.14 g/cm3 Discolouration of vulcanizates none Melting point min. 96 °C CBS content min. 94 % Ash content max. 0.5 % Evaporation loss max. 0.5 % Insoluble in ethanol Free amine max. 1.0 % Sieve residue @ 63 μ max. 0.1 %
20% elastomer binder und dispersing agents
max. 0.4 %
Usage:
- Mode of action:
The curing accelerator CBS-80 provides a considerably long scorch time, great processing safety and a fast full cure. CBS-80 is used as a sole accelerator for the low sulphur vulcanization or in combina- tion with dithiocarbamate or thiuram accelerators. The vulcanizates obtained have goode ageing resistance and a good compression set. The scorch time of mixes containing CBS-80 in combination with thiuram and dithiocarbamate is noticeably reduced. Thiourea has a strong secondary acceleration effect on CBS-80, mainly in mixes containing little sulphur. In compounds which are accelerated with mercaptanes and thiurams, CBS-80 may delay scorch.
- Dosage in NR:
primary: 0,5 - 1,0 phr with 2,5 - 3,5 phr sulphur
secondary: 0,5 phr with 1,5 - 3,0 phr sulphur and 0,3 phr mercapto or thiuram accelerators
- Dosage in SBR:
1,0 - 1,4 phr with 1,5 - 2,5 phr sulphur and 0 - 0,2 phr thiuram accelerator
- Application: treads, air hoses, conveyor belts, footwear and other technical articles
Storage:
25kg per paper carton, 400kg/1000kg per pallet, 8MT/10MT per 20' FCL. Store in original closed containers under cool and dry conditions for max. 2 years.
