The present invention relates to water-dispersable microcapsules comprising an oil phase, e.g. a perfume, containing a photolabile polymer comprising α-ketoacid or α-ketoester group capable of generating a gas upon exposure to light. The gas is able to cause an extension or the breaking of the microcapsule allowing the release of the oil phase and thus increasing the long-lastingness of the odor perception. The present invention concerns also the use of said microcapsules in perfumery as well as perfuming compositions or perfumed articles comprising the invention's microcapsules to provide a prolonged release of fragrant molecules.
本发明涉及可在
水中分散的微胶囊,该微胶囊由油相(如香
水)组成,含有光敏聚合物,该聚合物由α-
酮酸或α-
酮酯基团组成,在光照下能够产生气体。气体能使微胶囊扩展或破裂,使油相释放出来,从而增加气味感知的持久性。本发明还涉及上述微胶囊在香
水以及包含本发明微胶囊的香
水组合物或香
水制品中的使用,以提供香味分子的持久释放。