Emerald Kalama Chemical

Cure-Rite® OBTS

Cure-Rite® OBTS is an effective and proven sulfenamide accelerator. Consumers will benefit from longer, delayed-action vulcanization in NR, NR-BR Blend, NR-SBR Blend, particularly when fine grade Carbon Blacks are used. OBTS is, typically, used in the range of 0.5-4.0 phr. Compared to CBS, OBTS offers better scorch protection, cure rate and state of cure. The long scorch delay allows OBTS to produce high value rubber with high modulus and excellent dynamic elasticity. OBTS is well-known for the production of thick cross-section tread vulcanizates and complex precision molded, injected or extruded goods.

Attribute Value
Typical Properties
Physical State Flake
Melting Point (°C) 80-87
Heat Loss (%) 1.0
Ash (%) 0.15 max.
Moisture (%) 0.2 max.
Free Amine (%) 0.3 max
Application Group Application Description
Automotive Automotive Rubber Longer delayed-action accelerator for articles with excellent rubber properties
Rubber Footwear Best accelerator choice for the production of rubber soles in athletic footwear
Rubber Molded Goods Fast cure accelerator over broad process temperature range for intricately molded and injected rubber
Rubber Tires Accelerator with longer-delay action, allowing for complete cure in thick, extruded treads
Rubber Rubber Goods Longer scorch delay affords classic rubber properties to extruded, molded or injected goods.
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