Rubber chemicals: Overview
Why every tyre needs accelerators and antiozonants to work
What this tab covers What the chemical is, how big its market is, what it is used for (with shares, volumes, why it wins and what could replace it), and its chain from raw material to end user. Ends with three things to remember.Rubber chemicals are the small-volume organic chemicals that make rubber useful. Accelerators (sulphenamides, thiazoles, thiurams) let sulphur cross-link rubber in minutes instead of hours; antidegradants (PPDs such as 6PPD, and TMQ/TDQ) protect tyres and hoses from ozone, oxygen and heat. They are added at 1-5 parts per hundred of rubber and are made from aniline, carbon disulphide, amines and sulphur. Tyres are the main market. China makes most of the world's supply, which keeps prices and margins low for producers elsewhere, including India's NOCIL. 6PPD has become an environmental issue because its breakdown product kills salmon.
Volume about 1.5 Mt a year (indicative, basis: China output of roughly 1.2 Mt and a world share near 75-80%, as reported by the China Rubber Industry Association; not verified) Market value about $4-5 billion (indicative: 1.5 Mt x $2.5-3.5/kg; NOCIL's realisation was about Rs 217/kg, roughly $2.5/kg, in Q4 FY2026) Growth about 2-4% a year, following tyre and rubber goods output (indicative) indicative; PL Capital Q4FY26 NOCIL result update (8 May 2026) for realisationKey uses
| Use | Share | Annual volume | Why this commodity | Alternatives |
|---|---|---|---|---|
| Tyres (passenger, truck, two-wheeler, off-road) | n/a | most of about 1.5 Mt (indicative)basis | Every tyre compound needs an accelerator system (typically a sulphenamide such as TBBS or CBS with DPG) and an antiozonant (6PPD) plus TMQ. Tyre makers specify these tightly because cure rate and ageing decide tyre life and factory throughput. carbon_black tile (Notch via PCBL); indicative | Peroxide curing (for EPDM and specialty rubbers) Non-PPD antiozonants under development |
| Mechanical rubber goods (belts, hoses, seals, mountings) | n/a | not publishedbasis | Automotive and industrial parts use thiazoles, thiurams and dithiocarbamates, often with heat-resistant antioxidants for under-bonnet temperatures. indicative | Thermoplastic elastomers (no vulcanisation) |
| Latex products (gloves, condoms, balloons, foam) | n/a | not publishedbasis | Dithiocarbamate and thiuram accelerators cure latex at low temperature; Malaysia and Thailand glove makers are large buyers. Allergy concerns push accelerator-free nitrile gloves. indicative | Accelerator-free gloves Synthetic polyisoprene |
| Footwear, cables and other rubber products | n/a | not publishedbasis | Shoe soles, cable jackets and rubber flooring use general-purpose accelerator packages; India's footwear industry is a sizeable domestic buyer. indicative | EVA and PU soles |
From raw material to user
- Aromatic amines and sulphur chemicals Benzene to nitrobenzene to aniline; carbon disulphide from methane or charcoal and sulphur; amines (tert-butylamine, cyclohexylamine, dimethylamine).
- Intermediates MBT from aniline, CS2 and sulphur (about 0.56 t aniline per t MBT, stoichiometry); 4-ADPA from aniline and nitrobenzene for PPDs.
- Finished chemicals Sulphenamides (CBS, TBBS) from MBT and amines; 6PPD from 4-ADPA and MIBK; TMQ from aniline and acetone; insoluble sulphur.
- Compounding Added at about 1-5 phr each to rubber, carbon black, oil and zinc oxide in internal mixers (indicative).
- Vulcanisation and use Cured at about 140-180 C; antidegradants migrate to the surface during life and wash off with tyre wear particles (indicative).
Made from (commodity table)
Oil Crude oilS SulfurThree things to know
- NOCIL holds about 40% of the Indian rubber chemicals market with 115,124 t/yr capacity including intermediates (CARE Ratings, Oct 2025).
- NOCIL's realisation fell about 15% year on year to roughly Rs 217/kg in Q4 FY2026 under Chinese price pressure (PL Capital).
- India imposed a five-year anti-dumping duty on sulphenamide accelerators from China, the US and the EU in 2026 (Business Today, 22 Jun 2026).