The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 31, 2018
Filed:
Sep. 23, 2013
Applicant:
Firmenich SA, Geneva, CH;
Inventors:
Assignee:
Firmenich SA, Geneva, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C11D 3/50 (2006.01); C11D 17/00 (2006.01); A61K 8/11 (2006.01); A61K 8/73 (2006.01); A61K 8/84 (2006.01); B01J 13/16 (2006.01); B01J 13/14 (2006.01); B01J 13/10 (2006.01); B01J 13/22 (2006.01); C11B 9/00 (2006.01); A61Q 15/00 (2006.01); A61K 8/65 (2006.01); A61K 8/87 (2006.01); A61Q 19/10 (2006.01); A61Q 5/02 (2006.01); A61Q 5/12 (2006.01);
U.S. Cl.
CPC ...
A61K 8/11 (2013.01); A61K 8/65 (2013.01); A61K 8/73 (2013.01); A61K 8/84 (2013.01); A61K 8/87 (2013.01); A61Q 15/00 (2013.01); B01J 13/10 (2013.01); B01J 13/14 (2013.01); B01J 13/16 (2013.01); B01J 13/22 (2013.01); C11B 9/00 (2013.01); C11D 3/505 (2013.01); A61K 2800/412 (2013.01); A61Q 5/02 (2013.01); A61Q 5/12 (2013.01); A61Q 19/10 (2013.01);
Abstract
The invention relates to a method of making multilayer core/shell microcapsules for delivery of active agents such as fragrance components of perfume oils. The method includes forming an outer shell by coacervation surrounding an internal phase which contains the active agent; and forming an inner shell by interfacial polymerization at the interface between the internal phase and the outer shell. The internal phase contains the active agent. The microcapsules are typically incorporated in a consumer product wherein the multilayer shell prevents the active agent from release until desired, generally during use of the consumer product.