New Process for the Synthesis of A Sun-screening Agent Isooctyl P-methoxy Cinnamate

A sun-screening agent isooctyl p-methoxy cinnamate was prepared by reaction of p-methoxyl benzaldehyde with isooctyl acetate using titanium tetrachloride as catalyst. The optimum conditions are as follows： molar ratio of p-methoxyl benzaldehyde to isooctyl acetate and titanium tetrachloride is 1 ： 1.1 ： 0.5; reaction temperature is 30℃; and reaction time is 6 h. The yield of isooctyl p-methoxy cinnamate can reach 98%. The method of the synthesis of isooctyl p-methoxy cinnamate is efficient and economical.

紫外线对皮肤的光辐射损伤与防护研究

研究了阳光紫外线对皮肤造成的各种光辐射损伤 ,探讨了如何采取积极有效的防护措施、各类防晒剂的应用状况、以及防晒化妆品的发展趋势 。