Buna® VSL

Buna VSL is a family of solution styrene-butadiene rubbers, which have different styrene and vinyl levels combined with varying viscosities, and are widely used in automobile tires. 

Buna VSL is a family of solution styrene-butadiene rubbers (SBRs) that have different styrene and vinyl levels combined with varying Mooney viscosities. In contrast to emulsion styrene butadiene rubbers, Buna VSL’s  molecular weight, molecular weight distribution, microstructure and branching can be controlled to produce polymers that offer improved properties.

Solution SBRs are gradually replacing emulsion SBRs for special applications, especially for summer and winter tire treads and low-rolling- resistance tires in the high-performance sector. It is sometimes blended with other synthetic rubber to improve the properties of the final product.

When Buna VSL is used as a component in the polymer blend of car tire treads, grip and rolling resistance are enhanced.

Also, vulcanizates made with Buna VSL have good resistance to reversion; the low temperature flexibility, resilience and abrasion resistance depend on the polymer's styrene and vinyl content.

Business Unit : Tire & Specialty Rubbers

Properties and Benefits 

  • Good resistance to reversion 
  • Improved wet grip
  • Low hysteresis 
  • Good resilience 
  • Good abrasion resistance



Areas of Applications

  • Tire

Synonyms

  • SSBR