Elastomers

Synthetic and natural rubber grades from certified producers, warehoused in India and released against the compound room's schedule.

Typically 60 to 65 per cent of total compound weight. Everything else in the mix is measured against what the elastomer already does.

Sixty per cent of every tyre starts here.

Elastomers are the backbone of a tyre compound, typically 60–65% of total compound weight. Polyplas supplies synthetic and natural rubber grades from producers like Zeon of Japan, warehoused in India and released against production schedules.

Polyplas supplies tyre-grade elastomers in India: Emulsion and Solution SBR, high-cis Polybutadiene Rubber including Nd-BR, and quality-assured Natural Rubber in SMR, TSR, ISNR and RSS grades. Material is imported from internationally certified producers, warehoused across six Indian cities, and delivered just in time to tyre plants.

The compound is a set of trade-offs.

A tread that grips gives up wear. One that rolls easily gives up grip. The blend is where a tyre maker decides what the tyre is for, and the elastomer ratio is how that decision gets written down.

Three elastomers.
No blend wins everything.

Grip, wear and rolling resistance pull against each other. Move the node and watch the ratio a compounder would have to specify to land there. Every one of them is a blend we can source.

Drag the node · or pick a blend

SBRStyrene butadiene60%
BRPolybutadiene30%
NRNatural rubber10%

SSBR-led tread for wet grip and low rolling resistance.

What we carry, and
what it is for.

Synthetic elastomer

Styrene Butadiene Rubber

The workhorse tread polymer. Two families, one supplier, warehoused in India.

SBR is the highest-volume synthetic elastomer in tyre manufacturing. Abrasion resistance is excellent, ageing behaviour is predictable, and the economics work at scale.

Polyplas carries both families. ESBR for general-purpose and cost-sensitive compounds. SSBR where the compound must deliver low rolling resistance and wet grip together, the tread chemistry behind fuel-efficient passenger tyres.

Grades carried

Emulsion SBR (ESBR) · Solution SBR (SSBR)

Where it lands

Tread compounds, passenger car, truck & bus, industrial rubber goods

Copolymer, styrene · butadiene

Styrene content decides the compound's stiffness and glass-transition; butadiene units keep the chain elastic.

ESBR vs. SSBR · qualitative index

Wet grip

SSBR advantage

Rolling resistance

Lower is better in tread

Abrasion resistance

Both families excellent

Processability

ESBR easier to mix

Cost efficiency

ESBR baseline

Typical applications

Passenger tread
SSBR for wet grip · RR
Truck & bus tread
ESBR / NR blends
Industrial goods
Belting, hose, sheet
Retread compound
ESBR economics

Representative properties

Styrene content	23.5% (ESBR 1502) · 21–40% (SSBR)
Bound styrene / vinyl	Set to compound target
Mooney viscosity ML(1+4) 100°C	46–54 typical
Volatile matter	≤ 0.75%
Bale mass · packaging	35 kg · pallet-strapped

High-cis polymer

Polybutadiene Rubber

Chosen for resilience. Almost always blended, never the whole answer, never the omitted one.

BR earns its place in a compound through resilience. Heat build-up stays low, abrasion resistance exceeds NR and SBR alone, and low-temperature flexibility holds.

It is almost always blended, with SBR in tread, with NR in truck compounds. Polyplas supplies high-cis grades from leading international producers, including neodymium-catalysed BR for the most demanding specifications.

Grades carried

High-cis BR (>96% cis) · Nd-BR (neodymium catalysed)

Where it lands

Tread and sidewall compounds, blended with NR or SBR

Elastic rebound · load then release

Higher resilience means less energy lost to heat under cyclic loading. Hover to replay.

High-cis BR contribution to a blend

Resilience

60–65% rebound

Abrasion resistance

Exceeds NR / SBR

Low-T flexibility

Tg ≈ −105 °C

Heat build-up

Low is better

Tear strength (solo)

Blended for tear

Typical applications

PCR tread
SBR : BR 70:30 – 50:50
TBR tread cap
NR : BR blends
Sidewall
Flex + fatigue
Golf ball · footwear
Non-tyre volumes

High-cis BR · indicative

Cis-1,4 content	>96% (high-cis grades)
Heat build-up	Low, excellent resilience
Abrasion resistance	Superior to NR and SBR alone
Typical tread blend	SBR:BR 70:30 to 50:50

Natural polymer

Natural Rubber

In high-load compounds, nothing has replaced it. Tensile, tear and dynamic heat still favour the tree.

In high-load applications, nothing replaces NR. Tensile strength, tear resistance and low heat build-up under dynamic loading keep it the dominant elastomer in truck, bus and OTR compounds.

Polyplas sources quality-assured grades against the specifications of India's leading tyre manufacturers, the same mills, the same consistency, shipment after shipment.

Grades carried

SMR · TSR · ISNR · RSS grades as required

Where it lands

Truck & bus tyres, OTR tyres, inner liners, sidewalls, body plies

Tyre cross-section · NR usage map

TreadNR-heavy in TBR
SidewallFlex fatigue
Body plyNR + reinforcement
Bead bundleLocks to rim

Where high-load compounds still lean on natural rubber - tread cap, body plies and bead area.

NR against synthetic elastomers

Green strength

Building tack

Tensile · tear

Dominant at load

Dynamic heat

Low build-up

Ageing resistance

Requires 6PPD / TMQ

Rolling resistance

Neutral

Typical applications

TBR tread cap
Load, cut, chip
TBR body ply
High modulus base
OTR compounds
Off-road, mining
Inner liner · sidewall
In blend with BR

Quality windows · representative

Grades	SMR 10 · SMR 20 · TSR 20 · ISNR 20 · RSS 3/4
Dirt content	≤ 0.10% (SMR 20)
Nitrogen	≤ 0.60%
Volatile matter	≤ 0.80%
Wallace plasticity retention	≥ 60
Bale size	33.3 kg or 35 kg, pallet

Of compound weight: 60–65per centOf compound weight
SBR, BR and natural rubber: 3familiesSBR, BR and natural rubber
Released just in time: 6warehouse citiesReleased just in time

Sourced from
Zeon.

Japan · SBR, PBR and speciality synthetic rubbers

Polyplas represents Zeon in India. Solution and emulsion grades come in against certified specification, and the technical conversation about which grade suits which compound happens here rather than across a time zone.

See every principal