Aysun Yorulmaz

Aysun Yorulmaz

Product Manager

+90 530 280 8906 a.akgun@helm.com.tr vCard

Kutluğ Seymen

Kutluğ Seymen

Head of Department

+90 537 040 8521 k.seymen@helm.com.tr vCard

Tuncay Yilmaz

Tuncay Yilmaz

Managing Director

+90 212 336 68 58 t.yilmaz@helm.com.tr vCard

Styrene Monomer

Styrene Monomer a colorless liquid and has a sweet smell.


The conventional process to produce styrene monomer is the alkylation of benzene with ethylene followed by a dehydrogenation (EBSM method). This “on-purpose” method represents approximately 70 % of the styrene monomer produced globally.

Furthermore styrene is a co-product when producing propylene oxide (POSM method).

HELM is marketing half a million tons of styrene monomer globally per annum with a special focus on Europe and Turkey. Sources are multiple styrene producers which enable HELM to offer different qualities and reliable deliveries and therefore being a flexible partner for the industry.

Examples of applications

The most important styrene derivative is polystyrene (PS), which is used in the production of cd boxes, food containers and drinking cups e.g. Another product made from styrene is the so called Expandable Polystyrene (EPS). It is used in fish boxes, home insulation, motorcycle and bicycle helmets for example. Further styrene monomer derivatives can be found in multiple products of our everyday use like car tyres, toys and automotive components.


  • Bulk in seagoing vessels / barges
  • Bulk in road tank cars
  • Bulk in iso tank containers

Other packaging solutions possible by agreement.

Special services associated with the product:

  • SM is a core-product of HELM Kimya and always available in bulk in tanks in Gebze (Turkey) to serve customers in Turkey.
  • HELM Kimya is delivering SM both, as customs cleared and not customs cleared.


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