The present invention provides novel compounds that promote crystallization and uses thereof. The polymer of the present invention is represented as formula (1): 【formula (1) 】, wherein each of X1, X2 and X3 is independently a C18~C28 hydroxy fatty acid residue having a carbonyl group in chain, in which a hydroxyl group is removed from the carboxyl group thereof and a hydrogen is removed from the hydroxyl group thereof each of R1, R2, R3, R4 and R5 is independently a hydrogen or a fatty acid residue having a carbonyl group, in which a hydroxyl group is removed from the carboxyl group thereof each of m1, m2 and m3 is independently an average molecule ranging from 0~15, n is an average degree of polymerization ranging from 0~100, when n is equal to or greater than 2, the plurality of X3, the plurality of R3, and the plurality of m3 may be the same or different and the molecular weight of the polymer ranges from 3,000~100,000.本發明提供擁有優異結晶促進性之新穎化合物及其用途。本發明之高分子化合物如化學式(1)所示: 【化1】式中,X1、X2及X3各自獨立為從鏈中含有1個羰基的碳數18~28之羥基脂肪酸之殘基,其羧基去除了羥基,以及其羥基去除了氫原子;R1、R2、R3、R4及R5各自獨立為氫原子、或從鏈中含有1個羰基的脂肪酸之殘基,其羧基去除了羥基;m1、m2及m3各自獨立為0~15之平均莫耳數,n為0~100之平均聚合度,當n為2以上時,複數個X3、複數個R3、及複數個m3彼此相同或相異;以及分子量為3,000~100,000。
