	US 12,460,160 B2
	Redeposition inhibiting styrene maleic anhydride copolymers and detergent compositions containing same
Steven M. Raders, Macedonia, OH (US); Yunpeng Zhu, Fair Lawn, NJ (US); Nima Hakim, Salford (GB); and Janean Nagorski, Akron, OH (US)
Assigned to Lubrizol Advanced Materials, Inc., Cleveland, OH (US)
Appl. No. 17/777,781
Filed by Lubrizol Advanced Materials, Inc., Cleveland, OH (US)
PCT Filed Nov. 19, 2020, PCT No. PCT/US2020/061176 § 371(c)(1), (2) Date May 18, 2022, PCT Pub. No. WO2021/102080, PCT Pub. Date May 27, 2021.
Claims priority of provisional application 62/937,471, filed on Nov. 19, 2019.
Prior Publication US 2023/0017803 A1, Jan. 19, 2023
Int. Cl. C11D 1/44 (2006.01); C11D 3/00 (2006.01); C11D 3/20 (2006.01); C11D 3/37 (2006.01)

CPC C11D 3/3757 (2013.01) [C11D 3/0036 (2013.01); C11D 3/2013 (2013.01); C11D 3/3707 (2013.01)]

8 Claims

1. A method for imparting anti-redeposition properties to a laundry detergent composition by adding from about 0.25 to about 2 wt. % (based on the total weight of the composition) of a functionalized polymer to said detergent, wherein said laundry detergent composition comprises at least one surfactant, and wherein said functionalized polymer is prepared by reacting:

i) a styrene maleic anhydride copolymer;

ii) a poly(oxyalkylene) monoamine; and optionally

iii) a poly(oxyalkylene) diol;

wherein said styrene maleic anhydride copolymer (i) has a styrene: maleic anhydride mole ratio of 2:1.