US 11,807,833 B2
pH dependent soluble polymers
Michael R. Sasges, Victoria (CA); and Anthony Martin John Porter, London (CA)
Assigned to TROJAN TECHNOLOGIES GROUP ULC, London (CA)
Filed by Trojan Technologies Group ULC, London (CA)
Filed on Feb. 17, 2021, as Appl. No. 17/177,758.
Prior Publication US 2022/0259526 A1, Aug. 18, 2022
Int. Cl. B08B 9/023 (2006.01); C11D 17/04 (2006.01); C11D 7/08 (2006.01); C11D 11/00 (2006.01); A61L 2/26 (2006.01); A61L 2/10 (2006.01); C02F 1/32 (2023.01); B08B 1/00 (2006.01); B08B 3/08 (2006.01); C11D 7/26 (2006.01)
CPC C11D 17/043 (2013.01) [A61L 2/10 (2013.01); A61L 2/26 (2013.01); B08B 1/006 (2013.01); B08B 3/08 (2013.01); B08B 9/023 (2013.01); C02F 1/325 (2013.01); C11D 7/08 (2013.01); C11D 7/266 (2013.01); C11D 11/0041 (2013.01); C11D 17/049 (2013.01); A61L 2202/11 (2013.01); B08B 2209/02 (2013.01); C02F 2201/324 (2013.01); C02F 2303/04 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for cleaning a sleeve of an ultraviolet light source, comprising:
providing the ultraviolet light source for disinfection of a fluid, wherein the sleeve surrounds the ultraviolet light source;
encapsulating a cleaning composition in a polymer material to form a compound;
placing the compound in a location adjacent to the sleeve, wherein a canister around and in contact with the sleeve encapsulates the compound against the sleeve;
dissolving the polymer material at a pH above a polymer material pH dissolution point, wherein the dissolving releases the cleaning composition; and
cleaning the sleeve using the released cleaning composition.