本发明公开了一种异丙叉丙酮及其制备方法,以重量百分比计,原料包括:双丙酮醇溶液85%~95%和催化剂5%~15%,各原料之和为100%;所述双丙酮醇溶液通过丙酮催化加热回流制备而成,以重量浓度百分比计,将双丙酮醇溶液进行常压蒸馏,加热温度为100℃~120℃,蒸发浓缩后的双丙酮醇重量百分比含量为80%~90%,浓缩后的双丙酮醇溶液 The invention discloses an isopropylidene acetone and a preparation method thereof. The raw material comprises the following components in percentage by weight: 85 to 95 percent of diacetone alcohol solution and 5 to 15 percent of catalyst, and the sum of the raw materials is 100 percent; Diacetone alcohol solution prepared by catalytic heating acetone backwash, in weight concentration percentage, the diacetone alcohol solution was distilled under atmospheric pressure, the heating temperature is 100 ℃ ~ 120 ℃, the weight concentration of diacetone alcohol after evaporation concentration of 80 % ~ 90%, concentrated diacetone alcohol solution