The addition of polybutene benefits thermoplastic road marking paints by making the hot melt coatings dry fast with a strong adhesion to the road surface.  Polybutene also offers good UV and thermal resistance which will help to reduce the brittle point and modify the softening point as well as increase the ultimate hardness of the final road mark.  KEMAT polybutenes give an excellent pour-point which improve the road marking paint flow in winter.

Thermoplastic road marking paint, also called thermoplastic coating or hot melt marking paint, is like a powder paint.  A hot melt kettle heats the road marking paint to 200oC, and then it is sprayed onto the road surface.  After cooling, the paint is wear-resistant, reflective and bright.  It is fast drying and can be driven over after a few minutes.  To help with identification of road markings in the dark, reflective glass beads are added as they improve the brightness as well as durability.

KEMAT provides the largest range of viscosities combining the Polybut™ and Polybol™ Polybutenes including very narrow MW distribution for road marking paints.

Thermoplastic road marking paints are used in a variety of applications including car parks and roads.  The common colours of road marks are white and yellow.  Yellow pigments are mainly heat-resistant yellow lead, while white pigments are predominantly titanium dioxide, zinc oxide, and lithopone.

Properties

  • good adhesion
  • good durability and thermal stability
  • quick drying
  • reduced brittle point and discolouration when hot
  • adjusted softening point and increased hardness
  • excellent pour point
  • resistant to colour fading

End User Applications

  • zebra crossings
  • pedestrian crossings
  • road surface markings
  • car parks