Malcom, Iowa -- ITWC Inc. is offering its customers a polyester polyol based on renewably resourced ingredients from DuPont Tate & Lyle BioProducts (DT&L). This new Poly SR line is a family of polyester polyols for use in applications for elastomers, coatings, and sealants that are based upon Susterra propanediol, a 100-percent bio-based ingredient produced from corn sugar using DT&L's proprietary fermentation technology.
Renewable resource polyester Poly SRs are available from ITWC in a variety of molecular weights, most commonly 1000 and 2000. When incorporated into select MDI (methylene diphenyl diisocyanate) prepolymers and crosslinked with EXT-1034, Susterra-based elastomers can have up to 50 percent bio-based content by weight, said a 27 Feb joint statement from ITWC and DT&L.
"Extensive testing shows virtually no difference in processing and finished product performance between standard 1,4-butanediol-based products and the Susterra-based products," said Roger Smith, president of Malcom, Iowa-based ITWC, pointing out that this makes it a viable option for companies that want to incorporate renewable resources into their PU products.
"Susterra ... offers a functional, consistent and high purity building block, all from a rapidly renewable source," added Joseph DeSalvo, DuPont Tate & Lyle marketing director.
For the urethane elastomer sector, ITWC offers raw materials, processing equipment and technical service with a chemical range that includes high quality MDI, TDI (toluene diisocyanate), and aliphatic prepolymers and systems, polyesters, extenders, catalysts and additives.
PIC: ITWC's Roger Smith and colleague Walt Smith.