US 12,269,002 B2
Microcapsule compositions
Li Xu, Edison, NJ (US); Yabin Lei, Holmdel, NJ (US); Yi Zhang, Middletown, NJ (US); Takashi Sasaki, Morganville, NJ (US); Ronald Gabbard, Farmingdale, NJ (US); and Lewis Michael Popplewell, Morganville, NJ (US)
Assigned to International Flavors & Fragrances Inc., New York, NY (US)
Appl. No. 17/416,084
Filed by International Flavors & Fragrances Inc., New York, NY (US)
PCT Filed Dec. 17, 2019, PCT No. PCT/US2019/066883
§ 371(c)(1), (2) Date Jun. 18, 2021,
PCT Pub. No. WO2020/131890, PCT Pub. Date Jun. 25, 2020.
Claims priority of provisional application 62/858,632, filed on Jun. 7, 2019.
Prior Publication US 2022/0071862 A1, Mar. 10, 2022
Int. Cl. B01J 13/16 (2006.01); A61K 8/11 (2006.01); A61K 8/34 (2006.01); A61K 8/37 (2006.01); A61K 8/44 (2006.01); A61K 8/73 (2006.01); A61K 8/92 (2006.01); A61K 9/50 (2006.01); A61Q 5/02 (2006.01); A61Q 5/12 (2006.01); A61Q 13/00 (2006.01); A61Q 15/00 (2006.01); A61Q 19/00 (2006.01); A61Q 19/10 (2006.01); B01J 13/20 (2006.01); C08G 18/64 (2006.01); C08G 18/70 (2006.01); C08K 5/07 (2006.01); C11D 3/00 (2006.01); C11D 3/50 (2006.01)
CPC B01J 13/16 (2013.01) [A61K 8/345 (2013.01); A61K 8/375 (2013.01); A61K 8/44 (2013.01); A61K 8/73 (2013.01); A61K 8/731 (2013.01); A61K 8/736 (2013.01); A61K 8/922 (2013.01); A61K 9/5047 (2013.01); A61K 9/5089 (2013.01); A61Q 5/02 (2013.01); A61Q 5/12 (2013.01); A61Q 15/00 (2013.01); A61Q 19/007 (2013.01); A61Q 19/10 (2013.01); B01J 13/206 (2013.01); C08G 18/6484 (2013.01); C08G 18/705 (2013.01); C08K 5/07 (2013.01); C11D 3/001 (2013.01); C11D 3/0015 (2013.01); A61K 8/11 (2013.01); A61Q 13/00 (2013.01); C11D 3/505 (2013.01); C11D 2111/12 (2024.01)] 9 Claims
 
1. A microcapsule composition comprising a dispersant and microcapsules that contain a single microcapsule core and a single microcapsule wall encapsulating the single microcapsule core,
wherein the microcapsule core contains an active material and the microcapsule wall is a polymeric network comprising chitosan and tannic acid covalently bonded to a polyisocyanate, and
wherein the microcapsule wall comprises by weight 20% to 60% of chitosan, 5% to 40% of polyisocyanate, and 20% to 70% of tannic acid, by weight of the microcapsule wall.