Product
Rubber accelerators
Rubber accelerators — MBTS, CBS and TMTD — speed up sulphur vulcanisation in tyres, belts, hoses, footwear and moulded goods.
On its own, sulphur vulcanises rubber slowly and inefficiently. Accelerators shorten cure times from hours to minutes and give better rubber properties. They are selected for scorch safety (how long the compound stays workable), cure speed and the crosslink structure they produce.
CBS is a sulphenamide accelerator with delayed action, which makes it a standard primary accelerator in tyres. MBTS is a thiazole with good processing safety, used widely in general rubber goods. TMTD is a fast thiuram accelerator used as a secondary accelerator or as a sulphur donor in efficient cure systems. Concern over nitrosamines from some thiurams has led to safer alternatives in some markets.
- Synonyms
- MBTS, CBS, TMTD
- Grades / forms
- Technical
- Industries
- Plastic & Rubber
Enquire
Get a price for Rubber accelerators
Send quantity, grade and destination port. Pricing, lead time and documentation come back within one business day.
Request a quotation- Certificate of Analysis with every batch
- MSDS in destination format
- Toll manufacturing to your specification
- Private label packing available
Typical applications
- Tyres
- Conveyor and transmission belts
- Hoses and extruded profiles
- Footwear
- Moulded and mechanical rubber goods
Packing options
- 25 kg multi-wall paper bags with PE liner
Storage & handling
Store in a cool, dry, ventilated place away from heat and acids.
Documentation
Certificate of Analysis, MSDS, Certificate of Origin, dangerous goods declaration where applicable, and third-party pre-shipment inspection on request.
Typical specification
- Products
- MBTS (CAS 120-78-5), CBS (CAS 95-33-0), TMTD (CAS 137-26-8)
- Form
- Powder, oiled powder or granules
- Ash
- ≤ 0.3%
- Heat loss
- ≤ 0.5%
Typical values for reference. The exact specification is agreed before the order and confirmed on the Certificate of Analysis for each batch.
Rubber accelerators — frequently asked
A primary accelerator such as CBS or MBTS controls the main cure. A secondary accelerator such as TMTD is added in small amounts to boost cure speed or modify crosslinking.
CBS is a sulphenamide accelerator with delayed action: it gives long scorch safety during mixing and shaping, then a fast cure. That combination suits the heavy, multi-stage processing of tyres.
Yes. Because some thiurams such as TMTD can form nitrosamines, alternative accelerators that do not form regulated nitrosamines are available where regulations or customers require them.
Yes. Chemtrade manufactures and exports Rubber accelerators from Surat, Gujarat, India to more than 55 countries, for customers in Plastic & Rubber. Send your grade, quantity and destination port for a quotation within one business day.
Every shipment of Rubber accelerators from Chemtrade includes a batch-specific Certificate of Analysis (COA) and Material Safety Data Sheet (MSDS). Certificate of Origin, third-party pre-shipment inspection and destination-specific regulatory documentation are arranged on request.
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