Renewable raw materials are being increasingly used to satisfy the quest for sustainability and environmental concerns. In the search for new vegetable oils as platform for new polymers, rubber seed oil (RSO) was relatively little investigated. High free fatty acid content of 13% in crude RSO is impediment for many applications including biodiesel, but can be beneficial when strong bonding with substrate is desired. RSO was used to prepare a polyol via hydroformylation/hydrogenation. The polyol had hydroxyl number 244 mg KOH/g and acid number of 21 mg KOH/g. The polyurethane prepared from this polyol and diphenylmethane diisocyanate was highly crosslinked with gel content of 98.1 % and 50 % swelling degree of toluene. It was a tough plastics at room temperature (T<sub>g</sub>: 44 <sup>o</sup>C) with tensile strength of 25.4 MPa, and elongation 16.7 %. When used as wood adhesive, it displayed extraordinary shear strength characterized by substrate wood failure at 7.3 MPa rather than the adhesive bond.

Polyol and polyurethane prepared from rubber seed oil by hydorformylation

254th National Meeting (2017)

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