Don’t fear the frost!

Modern Asphalt – low emission, low energy – high performance


VISCOBIT is a viscosity modifying organic additive for the production of warm mix asphalt (WMA). VISCOBIT is based on polyethylene wax. It can be used in mastic asphalt as well as rolled asphalt. It is suitable for the production of ready-to-use binders (including PMB) and for the direct use in asphalt mixing plants or cookers.

  • Occupational health and safety: Reduction of emissions and aerosols during production
  • Environmental protection: Lower need of heating energy, improved ecological footprint
  • Improvement: Load-bearing capacity, deformation behaviour and ageing process

Stable asphalt even at low temperatures

Our test series have shown that VISCOBIT, thanks to its special molecular structure, has no negative influence to the low temperature behaviour of warm mix asphalt.

  • VISCOBIT is not a hazardous substance. The fine granules are easy to handle and store, without limited shelf life
  • VISCOBIT modified Bitumen enables a wider processing window - without compaction problems.
  • VISCOBIT can be homogeneously mixed into bitumen without any problem. It is thermally stable in the mixture without a tendency to separation.

VISCOBIT meets all requirements for a viscosity-modifying organic additive for warm mix asphalts.

This means the following advantages for the application:

  • increase of work safety (through emission reduction)
  • energy saving
  • improved ecological footprint
  • reduction of aging of bitumen during processing
  • wear and tear of machines is reduced
  • improved resistance to deformation in the finished asphalt

Performance of VISCOBIT has been tested in binders and asphalt under various conditions.

Fraaß breaking point, ductility, plasticity range

Deformation (DSR, MSCR)

Cold temperature behavior (BBR)

 ageing (RTFOT and PAV)

Reduction of normative compaction temperature

Cold temperature behavior: Indirect Tensile Strength tests (ITS) at -5°C, Cooling test (TSRST)

Fatigue behavior: Monoaxial pulsating tensile test

Mastic asphalt: German high way A3 (500m), Mastic asphalt 8 S, Binder: 25/35 VL (with 3% VISCOBIT)

Rolled asphalt: motorway feeder road to BAB 38: 600 m on L178 near Frankleben/Sachsen-Anhalt (Germany), asphalt surface course: AC 11 DS, binder: PMB 25/55-55 A (with 3% VISCOBIT)

Frequently Asked Questions

VISCOBIT has a specific molecular structure, which provides a good interconnection of the additive with the bitumen matrix. In opposite to some other viscosity modifying additives the cold temperature behaviour is therefore not impaired by VISCOBIT. With VISCOBIT, users achieve an increased plasticity range in the bitumen, especially in the direction of low temperatures.

The dosage of VISCOBIT depends on the quality of the used bitumen and the intended effects. Typically, the recommended dosage is between 2% and 3% related to Bitumen.

Yes, VISCOBIT can also be used in polymer modified bitumen. It is well compatible with bitumen, but also with the commonly used polymers and has a positive effect to polymer distribution and storage stability.

VISCOBIT is commercially available. VISCOBIT is supplied in PE bags of 25 kg each and 750 kg per pallet. Delivery in big bags of different sizes is possible on request.

VISCOBIT is supplied as free-flowing, dust-free fine grain with a medium particle size of approx. 0.5 mm. To bring the product into the mixing equipment, pneumatic conveying systems or suction weighing systems are suitable.

VISCOBIT should be stored dry in its original packaging at room temperature. Direct exposure to sunlight and water should be avoided. When stored according to this recommendation, VISCOBIT has no limited shelf life.

Yes, it’s called Viscobit AdPro and it’s a new bitumen additive based on a modified polyethylene wax. It has a particularly good performance in improving deformation resistance, but additionally it has a positive influence to the adhesion to aggregates. It is also suitable for PMB.

Ask us about…

Please contact us. We will get back to you shortly by e-mail.

Uwe Schnabel

Senior Sales Manager

About Innospec Leuna

Ethylen is our base product. Our products are polymerised under high pressure at about 2,000 bar. We manufacture waxes and other specialised products such as cold flow improver for freezing temperatures.

Since 2004 Innospec Leuna belongs to the globally active Innospec Group, which is focussed on chemical additives for a wide range of applications. In Leuna we achieve a turnover of approx. 50 M. €, with 110 highly motivated employees. Our customers benefit from our high flexibility, high quality standards, individual oriented- application consultation as well as competitive conditions.

We are certified:

Request a Sample

Test our product. After submitting your request, we will promptly send a product sample to you.

Winfried Hommel

Product Manager Polymers


Viscobit AdPro

… is a new bitumen additive based on a modified polyethylene wax. It has a particularly good performance in improving deformation resistance, but additionally it has a positive influence to the adhesion to aggregates. It is also suitable for PMB.