VESTENAMER® has been used as an additive in the rubber industry for years. By virtue of its properties, the versatile trans-polyoctenamer can solve a variety of problems in the compounding and processing of rubber. It can also improve the dynamic properties of the vulcanized material and as well be used to recycle waste rubber.

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VESTENAMER® is a semicrystalline polyolefin additive that is also described as a trans-polyoctenamer rubber (TOR) since it is based on cyclooctene and shows a high proportion on trans-double bonds. As a polymeric processing aid, it acts as a plasticizer of rubber compounds in the mixing and manufacturing process. Due to the presence of double bonds, VESTENAMER® takes part in the vulcanization process and is incorporated into the rubber matrix. Therefore, one can consider VESTENAMER as a reactive plasticizer.

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The properties of VESTENAMER®:

• Low melting point - low viscosity in the melt (Mooney <10)

• High crystallinity, fast recrystallization rate

• High percentage of macrocycles (>30 %)

• A double bond every eighth carbon Atom

• High proportion of trans-configured double bonds

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Low viscosity above the melting point

VESTENAMER® has a high macrocycle content that significantly reduces its molecular weight. Unlike linear macromolecules, macrocycles can crosslink to a completely three-dimensional network, even at low molecular weight. Combined with a broad molecular weight distribution, its low molecular weight is also responsible for its unusually low viscosity at temperatures above the melting range. At 100 °C VESTENAMER® shows a Mooney viscosity ofless than 10 units.