High value polyurethane resins from rubber seed oil

• Published in: Polymer international Vol. 66; no. 1; pp. 126 - 132
• Main Authors: Hong, Jian, Yang, Xiao‐Qin, Wan, Xianmei, Zheng, Zhifeng, Petrović, Zoran S
• Format: Journal Article
• Language: English
• Published: Chichester, UK John Wiley & Sons, Ltd 01-01-2017; Wiley Subscription Services, Inc
• Subjects: Epoxidation; Fatty acids; Mechanical properties; polyol; Polyols; polyurethane; Polyurethane resins; Ring opening; Rubber; rubber seed oil; Seeds
• ISSN: 0959-8103; 1097-0126
• DOI: 10.1002/pi.5256

Rubber seed oil having high free fatty acid content and high unsaturation was used to obtain high quality polyurethane resins through epoxidation and ring opening with methanol and free fatty acids. Two polyols prepared with free fatty acids and without were cured with modified methylene diphenyl diisocyanate to obtain strong, high modulus glassy polyurethanes. The effect of structure on thermal and mechanical properties was analyzed. This showed that the polyol with free fatty acid utilized to obtain a branched structure gave superior crosslinking density and mechanical properties. © 2016 Society of Chemical Industry
Rubber seed oil was converted to polyols, with and without free fatty acids, by epoxidation and epoxy ring opening. Polyols were used to cast polyurethane sheets with commercial modified MDI.