POLYVEST® eCO ST-E 60 Bio

POLYVEST® eCO ST-E 60 Bio is a stereospecific, low viscous and triethoxysilane-terminated liquid polybutadiene having the following composition of double bonds:

  • 1,2-vinyl double bonds approx. 22 %

  • 1,4-trans double bonds approx. 58 %

  • 1,4-cis double bonds approx. 20 %

Our eCO grades present identical physicochemical properties to the traditional POLYVEST® portfolio, as they are based on renewable raw materials according to the mass balance approach.

Typical Applications

POLYVEST® eCO ST-E 60 Bio is used in various fields of application such as:
  • additive for tires

  • adhesive and sealants

  • insulated glass sealants

  • waterproofing membranes and coatings

  • dispersion additive for rubber based formulations

Benefits at a glance

Due to its unsaturated polymer backbone and the terminal triethoxysilane functionalities, the apolar and hydrophobic hydrocarbon resin POLYVEST® eCO ST-E 60 Bio is a highly reactive binder with very good dispersing properties of inorganic fillers. POLYVEST® eCO ST-E 60 Bio exhibits the following features:
  • excellent compatible with solid rubber and recycled rubber

  • high chemical resistance

  • good dispersion and chemical modification with high loading capacity of inorganic fillers

  • high cold resistance by keeping good flexibility at low temperatures

  • good solubility in aliphatics, aromatics and ethers

  • low moisture and gas permeability

  • possibility of moisture induced curing

Markets & Applications