Alcoholysis-polyesterification method was used in the investigation of utilization of Ximenia americana seed oil in the formulation of alkyd resins. The extracted oilseed gave an oil yield of 45.7% (w/w) and the physicochemical characterization indicated it is semi-drying in nature with iodine value of 152.3 g I 2 100 g -1 . The fatty acid analysis of the oil carried out earlier revealed oleic and linolenic as dominant fatty acids, having values of 72.1 and 10.3% respectively. Four grades of alkyds were formulated at 40% (I), 50% (II), 60% (III) and 70% (IV) oil lengths. The reaction progression was followed by determining the acid value of the aliquots for the reaction mixture at various time intervals beside the volume of water evolved. Kinetic studies showed that the reaction was second-order with values of 3.12 x 10 -4 , 2.44 x 10 -4 , 2.3 x 10 -4 and 2.28 x 10 -4 g (mg KOH) -1 min -1 for samples I, II, III and IV respectively. The extent of reaction (% P av ) determined at the initial stage of reaction ranged from 63.3 to 78.6%, indicating an appreciable degree of conversion. The corresponding average degree of polymerization (D p ) ranged from 2.7 to 4.7 and this indicated the formation of high molecular weight alkyd. Characterization of the alkyd gave iodine value of 70.1 + 0.74, 76.1 + 1.05, 81.2 + 1.0 and 86.3 + 0.8gI 2 100g -1 for samples I, II, III and IV respectively. The corresponding saponification values were 297.5 + 1.5, 332.5 + 1.2, 378 + 1.1 and 420.2 + 1.3 mg KOH g -1 . The 40 and 50% oil length alkyd films were resistant to acid, brine and water with little resistance to alkali. Characterization of paint based on two alkyd resin derivatives, 40 and 50% oil lengths, gave values for surface drying and tack-free property of less than 2 and 5 hours respectively in respect of the 40% oil length.
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机译：醇解-聚酯化法用于研究美国西曼尼亚种子油在醇酸树脂配方中的利用。提取的油料种子的油产率为45.7％（w / w），其理化特性表明其为半干性质，碘值为152.3 g I 2 100 g -1。对该油进行的脂肪酸分析显示，油酸和亚麻酸是主要脂肪酸，其值分别为72.1％和10.3％。四种等级的醇酸树脂分别以40％（I），50％（II），60％（III）和70％（IV）的油长配制。在反应进程之后，除了放出水的量以外，在不同的时间间隔确定反应混合物的等分试样的酸值。动力学研究表明，对于样品I，该反应为二级反应，值分别为3.12 x 10 -4，2.44 x 10 -4，2.3 x 10 -4和2.28 x 10 -4 g（mg KOH）-1 min -1， II，III和IV。在反应的初始阶段确定的反应程度（％P av）在63.3至78.6％的范围内，表明明显的转化度。相应的平均聚合度（D p）为2.7至4.7，这表明形成了高分子量的醇酸树脂。对于样品I，II，III和IV，通过醇酸的表征，碘值分别为70.1±0.74、76.1±1.05、81.2±1.0和86.3±0.8gI 2 100g -1。相应的皂化值为297.5±1.5、332.5±1.2、378±1.1和420.2±1.3mg KOH g -1。 40％和50％油长的醇酸树脂薄膜对酸，盐水和水具有抵抗力，而对碱的抵抗力很小。基于两种醇酸树脂衍生物（油长为40％和50％）的油漆特性鉴定，相对于40％油长，其表面干燥和不粘性能分别小于2和5小时。
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