Targeted controlled delivery compositions activated by changes in pH or salt concentration
申请人:——
公开号:US20030195133A1
公开(公告)日:2003-10-16
The present invention relates to a novel controlled release carrier system for pH or salt triggered release and targeted delivery of fragrances and other active ingredients onto fabric, hair, skin, and other biological surfaces and which provides prolonged release of fragrances and other active ingredients over an extended period of time, or yields a high impact fragrance “burst” upon treating the target surface with heat (blow drying the hair, ironing the fabric). The controlled delivery system of the present invention is substantially a free-flowing powder formed of solid hydrophobic nano-spheres comprising the fragrance and other active ingredients that are encapsulated in a pH or salt sensitive micro-spheres. Also described are processes for preparing such compositions and processes for using same. Furthermore, certain components of the aforementioned compositions in combination with one another are novel, and other components have novel uses in increasing fragrance substantivity, particularly in fabric, hair, and skin care preparations. The invention further pertains to consumer and diversified products comprising the controlled release system of the present invention.
本发明涉及一种新型控释载体系统,用于在织物、头发、皮肤和其他生物表面进行 pH 或盐触发释放和定向递送香料和其他活性成分,可在较长时间内延长香料和其他活性成分的释放时间,或在对目标表面进行热处理(吹干头发、熨烫织物)时产生高冲击力的香味 "爆发"。本发明的可控递送系统实质上是一种自由流动的粉末,由固态疏水性纳米球体形成,其中包含香料和其他活性成分,并封装在对 pH 值或盐敏感的微球中。本发明还描述了制备这种组合物的工艺和使用这种组合物的工艺。此外,上述组合物中的某些成分相互组合在一起是新颖的,而其他成分在增加香料的吸附性方面具有新颖的用途,特别是在织物、头发和皮肤护理制剂中。本发明还涉及包含本发明控释系统的消费品和多样化产品。