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People Basics more resistant to acid, base and solvents. While TPUs based on adipic acid completely disintegrated in MEK, C18 diacid TPUs only picked up 13% by weight after seven days. The C18 diacid based materials were also much more resistant to non-polar solvents such as toluene. In conclusion, highly crystalline TPUs derived from bio-based C18 diacid result in a new class of polyurethanes with exceptional strength, toughness and solvent resistance that can meet the demand for renewable materials that need to survive in aggressive, high-temperature and high-humidity environments. Inherent C18 Diacid will allow the polyurethane market to expand product offerings in applications with renewable materials that exceed the performance of standard, petroleum-based TPUs. References [1] The Polyurethanes Book, Editors David Randall and Steve Lee, 2012 [2] Inherent C18 Diacid, bioplastics MAGAZINE, vol.8, Issue 05/2013, pp 8 [3] Abraham, T.; Kaido, H.; Lee, C. W.; Pederson, R. L.; Schrodi, Y.; Tupy, J. U.S. Patent Application 2009/0264672. [4] Acknowledgements to Aisa Sendijarevic, Troy Polymers Solvent TPU based on HD-Adipate (2000 g/mole) 7 day weight gain % TPU based on BD-Inherent C18 Diacid (2000 g/mole) 7 day weight gain % H20 1.17 0.64 MEK Disintegrated 13 Toluene 116 20 0.1 N HCl 1.30 0.70 0.1 N NaOH 1.02 0.57 Table 2 – Solvent Resistance of TPUs made from Inherent C18 Diacid vs. TPUs from Adipic Acid The 9 th Annual Collocated with BIO World Congress Attending Smithers Rapra’s 9 th annual Biopolymers Symposium can help you and your organization answer that question. The 2014 program will bring together organizations like Corbion Purac, ecosVC, Green Blue, the Vancouver Aquarium, Unisource Global, BASF and International Paper to share their experiences and knowledge to help you expand your markets. Planned sessions include sustainable feedstocks, the latest innovations in biobased monomers and polymers and biopolymers in compostable food service and more. How can you capitalize on rapidly growing markets for biobased materials and applications? May 12-13, 2014 Loews Philadelphia Hotel, Philadelphia, PA 48 bioplastics MAGAZINE [02/14] Vol. 9

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