Synthetic Rubber

We provide the following synthetic rubber on regular basis :

  • SBR 1502
  • SBR 1712
  • PBR 1220
  • BK 1675N
  • Chlorobutyl

Styrene Butadiene Rubber (SBR)

The copolymer (copolymer) of styrene and butadiene, which has more than 50% of butadiene, is called Styrene Butadiene Rubber (SBR). The typical ratio of monomers is from 70% to 75% butadiene to 25% to 30% of styrene, and if the styrene is above 50%, the product is getting highly plastic and is used to produce latex. This polymer is defined as a high-performance polymer, and it is the most consumable product in the world, due to the availability of cheap and abundant raw materials, with a good price, It has the highest volume of production in the rubber industry. Over 70% of SBRs are consumed in the Tyresindustry, especially the Tyres, 15% in mechanical parts and about 10% in latex form.

Product Application :

Styrene Butadiene has different grades and varies depending on each grade, ranging from Tyres and rubber to the shoe and mechanical industries.

5 important property for the use of SBR in the rubber industry are :

  • Rupture resistance
  • Fatigue strength
  • Flex resistance
  • Abrasion resistance
  • Slip resistance (has the property of grappling with asphalt).

SBR typical applications :

  • Mechanical goods
  • Tyres
  • Molded and extruded mechanical rubber goods
  • Foot wear
  • Light and dark colored mechanical goods.

Allwin deals in the following two grades of SBR :

  • SBR 1502
  • SBR 1712

SBR 1502 Cold Polymerized Emulsion Styrene Butadiene Rubber (SBR)

SBR 1502 is a cold polymerized, 23.5% styrene SBR polymer made with a mixed-acid emulsifier, nonstaining stabilizer, and salt-acid coagulation.

Properties :

SBR 1502 exhibits the excellent tensile strength, abrasion resistance, flexibility and recovery properties that are characteristic of “cold” rubbers. This non-staining, non-discolouring polymer offers a complete range of bright, colourful stocks capable of satisfying requirements in a variety of products.

End uses

include white sidewall Tyres, footwear, light and dark coloured mechanical goods and miscellaneous items where excellent physical properties and minimum discoloration and staining are required.


Light tan colour • Excellent tensile strength • High abrasion and tear resistance • High processability compared to natural rubber • Easy vulcanization and stable scorch properties


  • 35 kg bales
  • 30 bales per crate (1.05 MT)

SBR 1712 Cold Polymerized Emulsion Styrene Butadiene Rubber (SBR)

SBR 1712 is a cold polymerized, 23.5% styrene staining type SBR, extended with 37.5 parts of highly aromatic oil. Raw materials for this elastomer are carefully chosen to produce the best physical properties and processing characteristics at economical cost. The aromatic oil used is an efficient plasticizer for high molecular weight SBR and results in superior physical and processing properties compared to other oil-extended rubbers.

End Use

Application possibilities for SBR 1712 include Tyres and mechnical goods compounds where color and staining are not decisive factors.


  • Dark brown colour
  • High abrasion resistance
  • Easy vulcanization and stable scorch properties
  • Excellent processability compared to natural rubber
  • Packing • 35 kg bales • 30 bales per crate (1.05 MT)

PBR 1220

PBR 1220 is a cobalt catalyst-based polybutadiene rubber (PBR) , containing non-staining stabilizer. It is a polymer formed from the polymerization of the monomer 1, 3-butadiene. Exhibits high cis content, high elasticity, longer product durability and dynamic stress resistance. Offers water insolubility, resilience and abrasion properties. Due to its high resistance to wear, it is used especially in the manufacturing of Tyres which consume 70% of production. Its other uses are carcass & sidewalls, under-treads, conveyor belts, sportswear, golf balls, automotive components, shoe heels & soles, flexible rollers and mechanical goods

BK-1675 N General Purpose Butyl Rubber

BK 1675N is an isobutyleneisoprene rubber with a yellowish-white bale colour.

End Use

Used in inner Tyres tube and rubber seal production, diaphragms of shaper-vulcanizers, latex of butyl rubber, curing bags and bladders, vibration dampers, conveyor belts, automotive and industrial molded parts, tank and reservoir linings, electrical insulations, caulks, sealants and sealant tapes, pipe wrappings, gaskets, appliance parts and more.


  • Very low air permeability and very good gas barrier properties
  • Excellent electric performance
  • Excellent thermal aging resistance


  • 30 kg bales
  • 15 bales per pallet (450 kg net weight)
  • Normal (0.03 - 0.04 mm)


Chlorobutyl is produced in a continuous process by reacting Butyl Rubber with chlorine. Halogenation allows co-vulcanization and improved compatibility with other diene rubber types, in addition to improvements in the vulcanization rates, states of cure and reversion resistance.

Applications :

These would include articles which need low permeability to gases and liquids, e.g. Tyres innerliners, hoses, seals and membranes.