	US 12,252,671 B2
	Deposition aid polymer for laundry
Matthew E. Belowich, Midland, MI (US); David S. Laitar, Midland, MI (US); Randara Pulukkody, Landsdale, PA (US); and Eric Wasserman, Collegeville, PA (US)
Assigned to Dow Global Technologies LLC, Midland, MI (US); and Rohm and Haas Company, Collegeville, PA (US)
Appl. No. 17/631,962
Filed by Dow Global Technologies LLC, Midland, MI (US); and Rohm and Haas Company, Collegeville, PA (US)
PCT Filed Sep. 23, 2020, PCT No. PCT/US2020/052217 § 371(c)(1), (2) Date Feb. 1, 2022, PCT Pub. No. WO2021/061773, PCT Pub. Date Apr. 1, 2021.
Claims priority of provisional application 62/905,500, filed on Sep. 25, 2019.
Prior Publication US 2022/0290076 A1, Sep. 15, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C11D 3/37 (2006.01)

CPC C11D 3/3707 (2013.01) [C11D 3/3723 (2013.01); C11D 3/373 (2013.01); C11D 3/3788 (2013.01); C11D 2111/12 (2024.01)]

9 Claims

1. A deposition aid polymer for laundry, comprising:

(a) 82 to 96 wt %, based on weight of the deposition aid polymer, of structural units of formula (I)

wherein each R¹is independently selected from the group consisting of a hydrogen and a methyl group; and

(b) 4 to 18 wt %, based on weight of the deposition aid polymer, of structural units of formula (II)

wherein each R²is independently selected from the group consisting of a moiety of Formula (III) and a moiety of Formula (IV)

wherein A⁻ is a counter anion balancing the cationic charge on the N; wherein each R⁴is a methyl group;

wherein the deposition aid polymer contains no more than 0.01 wt %, based on weight of the deposition aid polymer, of azetidinium moieties, epoxide moieties, carboxylic acid moieties, carbonyl moieties and halomethyl moieties;

wherein the deposition aid polymer has a weight average molecular weight of 5,000 to 30,000 Daltons; and

with the proviso that the deposition aid polymer has an average of 2.5 to 300 structural units of formula (II) per molecule.