Rubber Accelerator MBTS (DM): The Universal Solution for Enhanced Vulcanization & Performance

In the competitive landscape of modern rubber manufacturing, balancing scorch safety with vulcanization speed is a critical challenge for formulation engineers.

MBTS (DM), chemically known as Dibenzothiazole Disulfide, stands out as the industry standard. As a versatile thiazole accelerator, it offers exceptional flat curing properties and broad compatibility, making it an indispensable raw material for high-quality tires, industrial hoses, and technical rubber goods.

1. Technical Specifications (TDS Highlights)

For procurement and technical teams, consistent physicochemical properties are non-negotiable. Our MBTS (DM) meets rigorous international standards:

Chemical Name: Dibenzothiazole Disulfide
Common Names: Accelerator DM / MBTS
CAS RN: 120-78-5
Appearance: Gray-white powder or oil-coated granules (Granules offer excellent flowability and dust-free operation)
Initial Melting Point: ≥164.0℃ (Indicator of high purity)
Loss on Heating: ≤0.40%
Ash Content: ≤0.50%
Sieve Residue (150μm): ≤0.10%

2. Why Choose MBTS (DM)? Three Key Advantages

Unlike basic additives, premium MBTS (DM) delivers tangible “Cost-Performance” benefits in actual production environments:

A. Superior Scorch Safety & Delayed Action

MBTS is renowned for its delayed action. It provides a wide safety margin during the mixing and processing stages, effectively preventing premature vulcanization (scorching).

Benefit: Allows for complex mold filling and reduces scrap rates.
Dosage: Typically 0.5%-2.0% in Natural Rubber (NR) or Synthetic Rubber (SR) ensures stable processing.

B. Optimized Cure Efficiency & Physical Properties

While safe during processing, MBTS activates rapidly at curing temperatures.

Efficiency: Can shorten vulcanization cycles by 15%-20%, increasing machine throughput.
Performance: It significantly increases cross-link density. Case studies in tire manufacturing show that optimized MBTS usage can improve abrasion resistance by ~20% and reduce rolling resistance by 8%, extending product service life.

C. Versatile Compatibility (The “Universal” Booster)

MBTS is a staple in rubber compounding. It functions effectively alone or as a modifier/retarder when paired with ultra-fast accelerators like Thiurams or Dithiocarbamates. This flexibility allows engineers to fine-tune the cure rate to exact specifications.

3. Comprehensive Application Scenarios

Due to its stable chemical properties, MBTS (DM) is deeply integrated into the global rubber supply chain:

1. Tire Manufacturing (Core Application)

Target: Radial tires, heavy-duty truck tires, and OTR tires.
Function: Enhances heat aging resistance and tear strength, ensuring structural integrity under high-speed and high-temperature conditions.

2. Industrial Rubber Goods

Target: Conveyor belts, V-belts, high-pressure hoses, and seals.
Function: Critical for transmission belts where high modulus and wear resistance are required, significantly lowering maintenance costs for end-users.

3. General Rubber Goods & Reclaimed Rubber

Target: Footwear, cables, gloves, and rubber sundries.
Function: Its low toxicity and non-staining nature (in most compounds) meet modern environmental standards. It also acts as an effective activator for reclaimed rubber, upgrading the value of recycled materials.

4. Packaging, Storage & Sustainability

As global environmental regulations (such as REACH) tighten, our MBTS (DM) offers a compliant, green solution:

Eco-Friendly: Low free-MBT content (≤1.0%), no heavy metal residues, and low odor.
Packaging: Available in 25kg paper-plastic composite bags or 500kg jumbo bags, lined with moisture-proof film.
Storage: Stable for 24 months when stored in a cool, dry, well-ventilated area away from direct sunlight.

💡 Sourcing Tip

When selecting an MBTS supplier, look beyond price. Focus on batch consistency and granule strength. High-quality granules (1.5-3mm diameter with 2-5N crush strength) ensure smooth operation in automatic weighing systems without clogging or dusting.

Need a customized rubber additive solution? We provide end-to-end support, from technical formulation advice to stable global logistics. Empower your rubber manufacturing with high-purity accelerators.

[Contact Us Today for a Quote, TDS, or MSDS]