Polyurethane Value Chain


The chemistry of converting BDO to THF and subsequently to PTMEG is show here:

The simplified process flow diagram for INVISTA’s THF/PTMEG process technology offered for license is shown here:

THF PTMEG Diagram 2

Reference List

Download a copy of the reference list (Adobe Acrobat required).


IPT offers a range of plant capacities and configurations to suit our customer’s needs. Capacities for our single stream offering range from 350,000 tonnes per annum up to a world leading 1.25 million tonnes per annum, whilst the twin stream design has capacities ranging from 1.5 to 2.5 million tonnes per annum.

Key Features

  • Robust and efficient process
  • Operating costs for THF Technology
    • Low cost catalyst
    • Efficient conversion with minimal yield loss
    • Energy integration
  • Over 40 years of operating experience and technology improvement