公开(公告)号：US20230390167A1

公开(公告)日：2023-12-07

申请号：US18033087

申请日：2021-10-29

Applicant: BASF SE

Inventor： Bernd Dieter OSCHMANN ,  Wolfgang KRAUSE ,  Michael GOLLNER

IPC: A61K8/11 ,  A61Q13/00 ,  A61K8/85 ,  B01J13/08 ,  C11D3/50

CPC classification number: A61K8/11 ,  A61Q13/00 ,  A61K8/85 ,  B01J13/08 ,  C11D3/505 ,  A61K2800/412 ,  A61K2800/22

Abstract: The present invention relates to a process for producing polymer microparticles laden with at least one aroma chemical, which comprises i. dissolving the at least one aroma chemical and an organic polymer composition, which contains at least one polyester as a main constituent, in a volatile organic solvent having a boiling point lower than the boiling point of the aroma chemical and having a solubility in water of at most 100 g/L at 20° C. and 1013 mbar, whereby a solution of the aroma chemical and the organic polymer composition is obtained; ii. emulsifying the solution obtained in step i. in an aqueous medium containing at least one dispersant; iii. removing the volatile organic solvent from the emulsion by evaporation at a temperature of below 80° C. and at a pressure below atmospheric pressure, whereby an aqueous suspension of the laden polymer microparticles is obtained. The present invention also relates to microparticles laden with an aroma chemical, obtainable by the process described herein and to products containing the microparticle composition. The compositions are useful as additives for imparting a scent or flavour to a product. The compositions allow for controlled release of the aroma chemicals.