US 12,110,394 B2
Aqueous polymer dispersion and process of making the same
Xiangting Dong, Shanghai (CN); Ling Li, Louyang (CN); Zhihua Liu, Shanghai (CN); Hui Liu, Shanghai (CN); Wei Cui, Shanghai (CN); Baoqing Zheng, Shanghai (CN); Zhi Juan Gong, Shanghai (CN); Yan Wu, Shanghai (CN); Changkun Piao, Shanghai (CN); Jia Tang, Shanghai (CN); and Dong Yun, Shanghai (CN)
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. 17/611,696
Filed by Dow Global Technologies LLC, Midland, MI (US); Rohm and Haas Company, Collegeville, PA (US); and Dow Silicones Corporation, Midland, MI (US)
PCT Filed Jun. 13, 2019, PCT No. PCT/CN2019/091108
§ 371(c)(1), (2) Date Nov. 16, 2021,
PCT Pub. No. WO2020/248189, PCT Pub. Date Dec. 17, 2020.
Prior Publication US 2022/0213322 A1, Jul. 7, 2022
Int. Cl. C08L 83/04 (2006.01); C08F 2/00 (2006.01); C08F 2/01 (2006.01); C08F 2/22 (2006.01); C08F 212/08 (2006.01); C08F 220/06 (2006.01); C08F 220/14 (2006.01); C08F 220/18 (2006.01); C08F 220/56 (2006.01); C08F 230/08 (2006.01); C08G 77/16 (2006.01); C08G 77/20 (2006.01); C09D 7/65 (2018.01)
CPC C08L 83/04 (2013.01) [C08F 2/001 (2013.01); C08F 2/22 (2013.01); C08F 212/08 (2013.01); C08F 220/06 (2013.01); C08F 220/14 (2013.01); C08F 220/1804 (2020.02); C08F 220/1808 (2020.02); C08F 220/56 (2013.01); C08F 230/085 (2020.02); C08G 77/16 (2013.01); C08G 77/20 (2013.01); C09D 7/65 (2018.01); C08G 2150/00 (2013.01); C08L 2201/50 (2013.01); C08L 2205/02 (2013.01)] 12 Claims
 
1. An aqueous dispersion comprising a multistage polymer, wherein the multistage polymer comprises at least a first polymer and a second polymer,
wherein the second polymer comprises structural units of an ethylenically unsaturated siloxane monomer of formula (I), (II), or (III),

OG Complex Work Unit Chemistry
wherein, in formula (I), R is an ethylenically unsaturated group, and j and k are each independently in the range of from 0 to 100, and j+k=5 to 100;

OG Complex Work Unit Chemistry
wherein, in formula (II), R is an ethylenically unsaturated group, R1 is a hydroxyl, alkyl, aryl, alkoxyl, aryloxy, alkyl ether, or aryl ether group, and m is from 1 to 100;

OG Complex Work Unit Chemistry
wherein, in formula (III), R is an ethylenically unsaturated group, R1 and R2 are each independently a hydroxyl, alkyl, aryl, alkoxyl, aryloxy, alkyl ether, or aryl ether group, n is from 1 to 5, and p is from 1 to 100;
wherein the multistage polymer comprises, by weight based on the weight of the multistage polymer, 4.5% or more of structural units of the ethylenically unsaturated siloxane monomer; and
wherein the coagulum content of the aqueous dispersion is less than 2,000 ppm after filtration through a 44 micron sieve.