Using solid acid as the catalyst, DMDBS ?? the nucleation agent for polypropylene synthesis was prepared by the aldol reaction of D-sorbitol with 3,4-Dimethyl benzaldehyde.

• 以D-山梨糖醇和3,4-二甲基苯甲醛为原料,在固体酸催化剂下进行醇醛缩合反应,合成了二(3,4-二甲基二苄叉)山梨糖醇(DMDBS),并对影响产品熔点和收率的因素进行了考察。