Extraction, Characterization of African Pear (Dacryodes Edulis) Oil and its Application in Synthesis and Evaluation of Surface Coating Driers

Abstract: The fatty composition of African pear oil (APO) revealed that the oil is rich in saturated fatty acids, having palmitic acid (44.31%), stearic acid (8.07%), and oleic acid (42.45%) as the most abundant saturated and unsaturated fatty acids respectively. It iodine value was determine as 45.050 gI2/100g which classified it as non-drying oil. The synthesis of surface coating driers was carried out by precipitation method using APO, palm kernel oil (PKO), sodium hydroxide, lead (II) trioxonitrate (V), cobalt (II) chloride hexahydrate and anhydrous calcium chloride. The colour of lead, cobalt and calcium driers of APO and PKO were found to be yellow, purple and white respectively. The specific gravity of PKO driers were greater than those of APO driers. The prepared driers and the commercial driers were used separately in the formulation of white gloss alkyd paints and the properties of APO driers were found to b