	US 12,291,694 B2
	Dye scavenger and method of production of dye scavenger
Melina Kalagasidis Krusic, Belgrade (RS); Nedeljko Milosavljevic, Belgrade (RS); and Marija Lucic Skoric, Belgrade (RS)
Assigned to Melina Kalagasidis Krusic, Belgrade (RS); Nedeljko Milosavljevic, Belgrade (RS); and Marija Lucic Skoric, Belgrade (RS)
Appl. No. 17/294,387
Filed by Melina Kalagasidis Krusic, Belgrade (RS); Nedeljko Milosavljevic, Belgrade (RS); and Marija Lucic Skoric, Belgrade (RS)
PCT Filed Dec. 10, 2018, PCT No. PCT/RS2018/000019 § 371(c)(1), (2) Date May 14, 2021, PCT Pub. No. WO2020/122743, PCT Pub. Date Jun. 18, 2020.
Prior Publication US 2022/0010238 A1, Jan. 13, 2022
Int. Cl. C11D 3/20 (2006.01); C11D 3/00 (2006.01); C11D 3/22 (2006.01); C11D 3/38 (2006.01); C11D 7/44 (2006.01); C11D 7/46 (2006.01); C11D 17/00 (2006.01); C11D 17/04 (2006.01)

CPC C11D 3/0021 (2013.01) [C11D 3/2096 (2013.01); C11D 3/222 (2013.01); C11D 17/003 (2013.01); C11D 17/048 (2013.01); C11D 2111/12 (2024.01)]

20 Claims

1. A dye scavenger comprising a biodegradable hydrogel, wherein the hydrogel comprises:

a first polymer chemically cross-linked by a cross-linker,

a second polymer different from the first polymer,

a laundry additive comprising a fragrance, enzyme, fabric softener, water softener, anti-soil re-deposition agent, optical brightener, ethanoic acid and/or 2-hydroxypropane-1,2,3-tricarboxylic acid,

wherein the hydrogel has a pore size of from about 0.01 μm to about 100 μm, and

wherein the biodegradable hydrogel has a degree of crosslinking based on a mass ratio of the first polymer to cross-linker from about 30 to about 1.