BASF Introduces Bio-Based PTMEG
BASF introduces biobased PolyTHF for large-scale testing by selected partners
By Karen Laird Published: March 5th, 2015
BASF (Ludwigshafen, Germany) has announced that it is now offering bio-based Polytetrahydrofuran 1000 (PolyTHF 1000) for the first time. The company is providing this intermediate to selected partners for large-scale testing in various applications.
PolyTHF is a hygroscopic polymer made up of linear diols with a backbone of repeating tetramethylene units connected by ether linkages. The chains are capped with primary hydroxyl units and are produced by polymerizing tetrahydrofuran. It is a white solid that melts into a clear, colorless liquid when heated to between -15° and 30°C, depending on its molecular weight.
PolyTHF is especially beneficial when used as a building block for soft segment elastomers such as polyurethanes, co-polyetheresters and co-polyetheramides. Its hydroxyl groups react with other functional groups such as organic acids or isocyanates. The most significant reactions are polyaddition and polycondensation.
"The bio-based PolyTHF 1000 is identical in quality to the petrochemical-based product," said Andrej Brejc, Director, Renewable Diols, from BASF's Intermediates Division. "The opportunity to expand the range of products and applications made from renewable raw materials allows us and our partners to further explore the long-term market acceptance of this innovative technology."
PolyTHF is derived from 1,4 butanediol (BDO), which BASF has produced under license from Genomatica. BASF began production of 1,4-butanediol based on renewable feedstock using Genomatica's patented one-step fermentation process, based on sugars.
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