	US 11,939,486 B2
	Aqueous dispersion of polymeric particles
Yan Li, Shanghai (CN); Junyu Chen, Shanghai (CN); Cheng Shen, Shanghai (CN); James C. Bohling, Lansdale, PA (US); Zhi Juan Gong, Shanghai (CN); and Tao Wang, Shanghai (CN)
Assigned to Dow Global Technologies LLC, Midland, MI (US); and Rohm and Haas Company, Collegeville, PA (US)
Appl. No. 17/270,698
Filed by Dow Global Technologies LLC, Midland, MI (US); and Rohm and Haas Company, Collegeville, PA (US)
PCT Filed Oct. 16, 2018, PCT No. PCT/CN2018/110344 § 371(c)(1), (2) Date Feb. 23, 2021, PCT Pub. No. WO2020/077515, PCT Pub. Date Apr. 23, 2020.
Prior Publication US 2021/0332259 A1, Oct. 28, 2021
Int. Cl. C09D 133/08 (2006.01); C08F 2/22 (2006.01); C08F 212/06 (2006.01); C08F 220/14 (2006.01); C08F 220/18 (2006.01); C08L 43/02 (2006.01); C08L 71/02 (2006.01); C09D 133/12 (2006.01)

CPC C09D 133/08 (2013.01) [C08F 2/22 (2013.01); C08F 212/06 (2013.01); C08F 220/14 (2013.01); C08F 220/1802 (2020.02); C08L 43/02 (2013.01); C08L 71/02 (2013.01); C09D 133/12 (2013.01); C08L 2201/54 (2013.01)]

15 Claims

1. An aqueous dispersion of polymeric particles comprising an emulsion polymer and a polyalkylene oxide with a weight average molecular weight in the range of 450 to 1,500 g/mole,

wherein the emulsion polymer comprises structural units of an ethylenically unsaturated phosphorous acid monomer and/or a salt thereof,

wherein the polyalkylene oxide has the structure of formula (I),

R₁—O-(AO)_m—R₂ (I),

where R₁and R₂each independently represent a hydrogen atom or a straight, branched or cyclic, saturated or unsaturated alkyl group having from 1 to 22 carbon atoms; AO represents an oxybutylene unit or a combination of an oxybutylene unit with an oxypropylene unit; and m is an integer of from 5 to 23; and

wherein the amount of the polyalkylene oxide in the polymeric particles is 50% or more, by weight based on the total weight of polyalkylene oxides in the aqueous dispersion.