US 12,018,167 B2
Aqueous composition of organic polymeric microspheres, binder particles, and ion exchange resin
James C. Bohling, Lansdale, PA (US); Philip R. Harsh, Birdsboro, PA (US); Patrick E. Hartnett, Malvern, PA (US); Partha S. Majumdar, Harleysville, PA (US); and Qing Zhang, Collegeville, PA (US)
Assigned to Rohm and Haas Company, Collegeville, PA (US)
Appl. No. 17/764,677
Filed by Rohm and Haas Company, Collegeville, PA (US)
PCT Filed Oct. 7, 2020, PCT No. PCT/US2020/054543
§ 371(c)(1), (2) Date Mar. 29, 2022,
PCT Pub. No. WO2021/080772, PCT Pub. Date Apr. 29, 2021.
Claims priority of provisional application 62/923,797, filed on Oct. 21, 2019.
Prior Publication US 2022/0325124 A1, Oct. 13, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C09D 133/08 (2006.01); C08K 5/5445 (2006.01); C09D 5/02 (2006.01); C09D 5/16 (2006.01); C09D 7/40 (2018.01); C09D 7/42 (2018.01)
CPC C09D 133/08 (2013.01) [C09D 5/022 (2013.01); C09D 5/1637 (2013.01); C09D 5/1668 (2013.01); C09D 7/42 (2018.01); C09D 7/67 (2018.01); C09D 7/68 (2018.01); C09D 7/69 (2018.01); C09D 7/70 (2018.01); C08K 5/5445 (2021.01)] 7 Claims
 
1. A composition comprising an aqueous dispersion of a) from 5 to 50 weight percent, based on the weight of the composition, of polymer particles having a z-average particle size in the range of from 50 nm to 500 nm; b) from 0.01 to 7 weight percent, based on the weight the polymer particles, of anion exchange resin particles having a D50 median particle size in the range of from 0.1 μm to 50 μm; c) non-film-forming polymeric organic microspheres having D50 median particle size in the range of from 1 μm to 20 μm; and d) from 0.3 to 10 weight percent, based on the weight of the polymer particles, of an aminosilane represented by the following structure:

OG Complex Work Unit Chemistry
where each R is independently H, C1-C3-alkyl, or 2-aminoethyl; R1 is C1-C3-alkyl; and each R2 is independently H, C1-C3-alkyl, or C1-C3-alkoxy;
wherein the weight-to-weight ratio of polymer particles from component a) to microspheres from component c) is in the range of from 0.5:1 to 20:1.