	US 12,351,778 B2
	Laundry detergent formulation with biodegradable antiredeposition agent
Scott Backer, Phoenixville, PA (US); Randara Pulukkody, Lansdale, PA (US); John B. Case, Jr., Perkasie, PA (US); Saugata Nad, Brussels (BE); and Sangeeta Sanjeev Patel, Mumbai (IN)
Assigned to Dow Global Technologies LLC, Midland, MI (US); Rohm and Haas Company, Collegeville, PA (US); and Dow Silicones Corporation, Midland, MI (US)
Appl. No. 17/924,044
Filed by Dow Global Technologies LLC, Midland, MI (US); Dow Silicones Corporation, Midland, MI (US); and Rohm and Haas Company, Collegeville, PA (US)
PCT Filed Jun. 18, 2021, PCT No. PCT/US2021/037972 § 371(c)(1), (2) Date Nov. 8, 2022, PCT Pub. No. WO2021/262535, PCT Pub. Date Dec. 30, 2021.
Claims priority of application No. 202041026668 (IN), filed on Jun. 24, 2020.
Prior Publication US 2023/0174899 A1, Jun. 8, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C11D 3/00 (2006.01); C11D 1/22 (2006.01); C11D 3/37 (2006.01)

CPC C11D 3/0036 (2013.01) [C11D 1/22 (2013.01); C11D 3/3757 (2013.01); C11D 2111/12 (2024.01)]

9 Claims

1. A laundry detergent formulation, comprising:

a detergent surfactant;

a builder;

a filler; and

an antiredeposition agent, wherein the antiredeposition agent is a polymer comprising:

(a) 10 to 65 wt % of structural units of formula I

wherein each R¹and R²is independently selected from a hydrogen and a C_1-3alkyl group;

(b) 10 to 80 wt % of structural units of formula II

wherein each R³is independently selected from a hydrogen and a —(O) CH₃group; and

wherein each R⁴is independently selected from a hydrogen and a —CH₃group; and

wherein at least one of R¹and R²is a C_1-3alkyl group in at least 1 mol % of the structural units of formula I in the antiredeposition agent; wherein the antiredeposition agent has a lactone end group and wherein the antiredeposition agent has a weight average molecular weight of 1,500 to 6,000 Daltons.