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's technology offerings include a Technology Package that comprises a Process and Basic Design Package (PBDP), technology & operating know-how, market knowledge and project execution resources. The size of the plant can be configured to meet the needs of the client. IPT also offers on-going Technical Services and the potential to enter into off-take agreements with its licensees.

Key Features

  • Robust and efficient process based on INVISTA’s patented PTMEG process and catalyst
  • Low capital cost
    • Active catalyst
    • Stainless Steel and Carbon Steel materials of construction
    • Continuous Methanolysis
  • Over 10 years of commercial operation
  • INVISTA’s PTMEG product made using this process is qualified for all major end uses