Product Name: Rubber Vulcanizing Accelerator NOBS (MBS/MOR) |
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ITEM | INDEX | ||
Top Grade | First Grade | Second Grade | |
Appearance (Visual inspection) | Faint yellow or orange granules | ||
Initial M.P, oC ≥ | 81.0 | 80.0 | 78.0 |
Loss on drying, % ≤ | 0.40 | 0.50 | 0.50 |
Ash, % ≤ | 0.20 | 0.30 | 0.40 |
Insoluble in Methanol, % ≤ | 0.50 | 0.50 | 0.80 |
Free amine, % ≤ | 0.50 | ||
Purity, % ≥ | 95.0 | ||
Properties:
Faint yellow to brown granules. The melting point is 80°C. It is soluble in benzene, carbon tetrachloride, ethyl acetate, ethanol, dichloromethane, and acetone; while insoluble in water, gasoline, and acid/alkali with lower concentration.
Usage:
In natural and synthetic rubber tire compound, TBBS is normally used alone or with small quantities of secondary accelerators in combination with sulfur.
TBBS is also used in industrial rubber products with higher levels of secondary accelerators, like as the TMTD to obtain faster vulcanization cycles and improved aging resistance.
TBBS may also be used in EPDM and NBR compounding as the primary accelerator, giving good scorch delay and fast cure rates.
In comparison to CBS it displays a slightly longer scorch delay and is slightly more active. In NR, SBR, BR and blends, TBBS, when used at a 10% lower level, will give equal modulus to CBS and NOBS.
Storage:
Store TBBS in single stacked pallets in a cool, dry and well-ventilated area avoiding exposure of the packaged product to direct sunlight. Usually the shelf time is 12 months while the recommend use of date is 6 months.
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