In the compounding of elite translucent elastomers, medical-grade components, and bright technical rubber articles, defending polymer matrices against aggressive hot-air degradation without inducing any color staining is paramount. Rubber Antioxidant MBZ (commonly identified as ZMMBI or ZMBI) represents a premium heterocyclic secondary protective chemical. Chemically defined as Zinc 4/5-methyl-2-mercaptobenzimidazole (CAS No. 61617-00-3), MBZ effectively decomposes destructive hydroperoxides into completely stable compounds. By forming a powerful synergistic network with primary antioxidants (such as hindered phenols), MBZ safely prevents raw heat degradation, resists dynamic flex-cracking, and strongly deactivates destructive trace copper ions.
Technical Product Specifications
| Property / Parameter | Standard Specification |
|---|---|
| Chemical Name | Zinc 4/5-methyl-2-mercaptobenzimidazole (MBZ / ZMMBI) |
| CAS Number | 61617-00-3 |
| Appearance | White to off-white fine powder / dust-free granules |
| Zinc Content (%) | 10.0% – 13.0% |
| Loss on Drying (%) | ≤ 0.50% |
| Ash Content (%) | ≤ 21.0% |
| Sieve Residue (150 μm / 100 mesh) | ≤ 0.10% |
Why Choose Our MBZ (ZMMBI) Antioxidant?
- ✓ True Non-Staining & Non-Migrating Nature: Formulated strictly to prevent discoloration or chemical migration bloom, preserving color integrity across white, translucent, and vivid pastel rubber formulations.
- ✓ Enhanced Secondary Synergistic Boost: Seamlessly combines with primary hindered phenolic anti-aging chemistries to construct a highly defensive thermo-oxidative breakdown shield.
- ✓ Excellent Metal Poison Deactivation: Functions as a highly effective copper and heavy metal inhibitor, terminating metal-catalyzed polymer backbone fracturing loops.
Primary Applications
Antioxidant MBZ is widely integrated within Natural Rubber (NR), Styrene-Butadiene Rubber (SBR), Nitrile Rubber (NBR), and aqueous latex compounding recipes:
White & Translucent Rubber Products
An ideal choice for colorful athletic footwear outsoles, bright sportswear grips, bathroom mats, transparent feeding profiles, and light household articles.
Natural & Nitrile Latex Dipping
Highly recommended for medical examination gloves, surgical sheets, catheters, elastic health bands, and fine clear consumer balloons.
Automotive Wire & Cable Insulation
Formulated into premium under-hood heat-resistant gaskets, appliance insulation cords, flexible cable jacketing profiles, and non-staining rubber sheeting.
⚠ Storage & Handling Guidelines
Maintaining proper warehouse environment control parameters is key to safeguard the batch fluid properties and anti-aging efficacy of Antioxidant MBZ. While zinc-mercaptobenzimidazole complexes exhibit excellent thermal stability, prolonged exposure to ambient humidity can induce slow agglomeration or moisture absorption.
- • Warehouse Climate Control: Store the chemical bags within fully dry, cool, and shade-covered dedicated storage bays. Ensure the stock coordinates are entirely isolated from open moisture footprints, direct solar radiant arrays, or active heating vents.
- • Sealing & Hardening Preventions: Secure all inner poly liners tightly once a package is opened for dry weighing. Do not configure pallets above standard stack heights to prevent solid mechanical clumping during peak warm seasons.
- • Shelf Life & Rotation: Under clean, temperature-controlled sealed environments, our premium MBZ products carry a certified shelf life of 24 months from the manufacturing date. Running a strict First-In, First-Out (FIFO) material management model is strongly advised.
Frequently Asked Questions
What is the core compounding benefit of MBZ (ZMMBI) over MB (MBI)? +
Why is MBZ heavily specified for transparent and vibrant rubber parts? +
What is the recommended dosage criteria for MBZ in natural latex recipes? +
Partner with a Reliable Chemical Supplier
We provide premium-grade Rubber Antioxidant MBZ (ZMMBI) carefully processed to meet international technical benchmarks. Available in high-purity crystalline powders and custom dust-free granules to ensure absolute batch precision inside your industrial mixing environment.
