US 12,187,961 B2
Protection of polymeric/organic materials from photodegradation by encapsulation
Elias K. Stefanakos, Tampa, FL (US); and Sesha S. Srinivasan, Tampa, FL (US)
Assigned to UNIVERSITY OF SOUTH FLORIDA, Tampa, FL (US)
Filed by UNIVERSITY OF SOUTH FLORIDA, Tampa, FL (US)
Filed on Nov. 6, 2023, as Appl. No. 18/503,099.
Application 18/503,099 is a division of application No. 17/791,362, granted, now 11,851,616, previously published as PCT/US2022/016116, filed on Feb. 11, 2022.
Application 17/791,362 is a continuation in part of application No. 16/610,107, filed on Nov. 1, 2019, granted, now 11,359,137, issued on Jun. 14, 2022.
Claims priority of provisional application 63/148,368, filed on Feb. 11, 2021.
Prior Publication US 2024/0067871 A1, Feb. 29, 2024
Int. Cl. C09K 9/02 (2006.01); B01J 13/06 (2006.01); B01J 19/12 (2006.01); C04B 14/36 (2006.01); C04B 16/00 (2006.01); C04B 20/10 (2006.01); C04B 26/02 (2006.01); C04B 28/04 (2006.01)
CPC C09K 9/02 (2013.01) [B01J 13/06 (2013.01); B01J 19/122 (2013.01); C04B 14/36 (2013.01); C04B 16/00 (2013.01); C04B 20/1066 (2013.01); C04B 26/02 (2013.01); C04B 28/04 (2013.01); B01J 2219/0879 (2013.01); B01J 2219/0892 (2013.01); B01J 2219/1203 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method comprising:
covering at least one fragment of a first material that contains a thermochromic material (TCM) and/or a phase-change material (PCM) with an organic material and/or a polymeric material to form said at least one fragment encapsulated in a first shell of said organic material and/or polymeric material;
mixing said at least one fragment encapsulated in said first shell with a surfactant in a solvent to form an emulsion precursor;
combining an emulsion precursor with a second material that includes
(1A) a first metal oxide with a dopant, and/or
(1B) a metal oxide precursor; and
to form an emulsion;
and
processing said emulsion to generate at least one core-shell particle including a core containing the first material, the first shell encapsulating the core, and a second shell comprising the second material, wherein the second shell surrounds the first shell; and
wherein the first shell encapsulating the core and disposed between the core and the second shell, the first shell comprising polyacrylate and/or a polymethacrylate and/or a polymetacrylic acid.