Abstract: In the modern rubber industry, finding the perfect balance between scorch safety and vulcanization speed has always been a core challenge for formulation engineers. This article will delve into the chemical properties and application advantages of the rubber accelerator TBBS (NS), and explain why it is the best environmentally friendly alternative to NOBS. Learn how Qingdao Chengda Huili Import and Export Co., Ltd. can help upgrade your products with high-purity TBBS.
What is the rubber accelerator TBBS (NS)?
The rubber accelerator TBBS, chemically known as N-Tertiary butyl-2-benzothiazole sulfenamide, is commonly referred to as NS in the industry.
CAS Number: 95-31-8
Chemical Structure: Sulfenamides
As a delayed-action, fast-curing accelerator, TBBS performs exceptionally well in natural rubber (NR) and synthetic rubbers (such as SBR, BR, NBR). With its unique characteristics of a long induction period and fast curing speed, it has become an indispensable core additive in the production of radial tires and high-strength rubber products.
Core Advantages: Why do engineers prefer TBBS?
In rubber formulation design, TBBS offers significant technical advantages compared to CBS (CZ) or the now-obsolete NOBS:
- Excellent Scorch Safety
For large tire components or thick-walled rubber products, “scorching” (premature vulcanization) during processing is a fatal quality hazard. TBBS has a longer scorch time than CBS, meaning the rubber compound is more stable during mixing, calendering, and extrusion, greatly reducing the scrap rate. - Fast and Powerful Curing Characteristics
Once the activation temperature is reached, TBBS reacts extremely quickly. It imparts high modulus and excellent resilience to the vulcanized rubber. This characteristic is crucial for improving tire tread wear resistance and reducing rolling resistance. - Environmentally Compliant (The best substitute for NOBS)
With the tightening of global environmental regulations (such as the EU REACH regulation), the accelerator NOBS, which produces carcinogenic nitrosamines, has been banned in most countries. TBBS does not produce carcinogenic nitrosamines and its performance is very close to that of NOBS, making it an ideal alternative for achieving green manufacturing.
Market Applications: Which industries are driven by TBBS? Thanks to its excellent physical properties, TBBS (NS) is widely used in applications requiring extremely high physical and mechanical performance:
High-performance tire industry: Used in tread compounds, carcass compounds, and sidewall compounds, performing particularly well in all-steel radial truck tires.
Industrial conveyor belts: Provides the tensile strength required for high-strength joints.
Shock-absorbing rubber products: Utilizes its high modulus characteristics to improve the dynamic fatigue life of shock absorbers.
Hoses and cables: Ensures dimensional stability during the extrusion process.
Qingdao Chengda Huili Import and Export Co., Ltd. TBBS (NS) Technical Specifications and Quality Commitment
As a professional rubber additive supplier, Qingdao Chengda Huili Import and Export Co., Ltd.understands the impact of raw material consistency on final product quality. Our TBBS products are manufactured in strict accordance with the ISO quality management system.
| Item | Specification | Our Advantage |
| Appearance | Light yellow powder or granule | Dust-free granular form facilitates automatic weighing and handling. |
| Initial Melting Point | ≥ 105.0°C | High purity guaranteed with minimal impurities. |
| Loss on Drying | ≤ 0.30% | Low moisture content prevents bubble formation during rubber processing. |
| Ash Content | ≤ 0.30% | Low residue; minimizes impact on the electrical properties of the final product. |
| Free Amine | ≤ 0.50% | Strict control over the reaction endpoint ensures consistent quality. |
Why Choose Us?
Batch Stability: We utilize advanced closed-loop production processes to ensure high consistency in melting point and purity for every batch, reducing your production line debugging costs.
Multiple Formulations Available: We offer powder, oil-treated powder, and pre-dispersed masterbatch/granules, addressing workshop dust issues and protecting worker health.
Global Logistics Support: Whether it’s 25kg paper-plastic bags or 500kg jumbo bags, we provide professional packaging that meets sea freight requirements, ensuring safe delivery of your goods.
Frequently Asked Questions (FAQ)
Q: What are the main differences between TBBS and CBS (CZ)? A: Both are sulfenamide accelerators. TBBS has a longer induction period (scorch time) than CBS, offering better processing safety, but the vulcanization speed after activation is comparable. If your process is prone to scorching, we recommend replacing CBS with TBBS.
Q: Which accelerators can TBBS be used with? A: It can be used alone or in combination with thiuram accelerators (such as TMTD) or dithiocarbamate accelerators (such as ZDFC) to increase activity, or with anti-scorch agent PVI to further extend the scorch time.
Conclusion: Upgrade Your Rubber Formulation
In the highly competitive rubber market, choosing high-purity, high-stability additives is key to enhancing product competitiveness.
Qingdao Chengda Huili Import and Export Co., Ltd.is committed to providing you with top-quality rubber accelerator TBBS (NS) and comprehensive technical support. Whether you need sample testing or seek formulation optimization advice, our expert team is ready to assist you.
Contact us today for the latest quotation and COA (Certificate of Analysis)!
Phone/WhatsApp: +8615963283577
Email: info@ctp-pvi-chem.com
Website: www.ctp-pvi-chem.com