14-11-2019 дата публикации
Номер: US20190344237A1
Принадлежит:
The present invention generally relates to microparticles and, in particular, to systems and methods for encapsulation within microparticles. In one aspect, the present invention is generally directed to microparticles containing entities therein, where the entities contain an agent that can be released from the microparticles, e.g., via diffusion. In some cases, the agent may be released from the microparticles without disruption of the microparticles. The entities may be, for instance, polymeric particles, hydrogel particles, droplets of fluid, etc. The entities may be contained within a fluid that is, in turn, encapsulated within the microparticle. The agent may be released from the entity into the fluid, and then from the fluid through the microparticle. In such fashion, the release of agent from the microparticle may be controlled, e.g., over relatively long time scales. Other embodiments of the present invention are generally directed to methods of making such microparticles, methods of using such microparticles, microfluidic devices for making such microparticles, and the like. 1a single core comprising a liquid emulsion having a continuous phase and a dispersed phase; anda shell surrounding the single core;wherein the continuous phase comprises a hydrogel;wherein the dispersed phase retention fraction is greater than about 40% when the dispersed phase is α-pinene.. A composition comprising a plurality of microcapsules, each microcapsule comprising: The present invention generally relates to microparticles and, in particular, to systems and methods for encapsulation within microparticles.Microparticles such as microcapsules have great potential for applications involving encapsulation, delivery, and release of agents in fields such as agriculture, health care, cosmetics and detergents, construction chemicals, and food and beverages. A variety of physical and chemical methods, including spray-drying, coextrusion, interfacial polymerization, and complex ...
Подробнее