US 11,965,127 B2
Cationic silicone surfactants and method of preparing same
Nanguo Liu, Midland, MI (US); Zachary Wenzlick, Midland, MI (US); and Yang Cheng, Midland, MI (US)
Assigned to DOW SILICONES CORPORATION, Midland, MI (US)
Appl. No. 17/789,184
Filed by DOW SILICONES CORPORATION, Midland, MI (US)
PCT Filed Dec. 22, 2020, PCT No. PCT/US2020/066609
§ 371(c)(1), (2) Date Jun. 25, 2022,
PCT Pub. No. WO2021/138148, PCT Pub. Date Jul. 8, 2021.
Claims priority of provisional application 62/955,192, filed on Dec. 30, 2019.
Prior Publication US 2023/0060144 A1, Mar. 2, 2023
Int. Cl. C11D 1/62 (2006.01); C09K 23/38 (2022.01); C09K 23/54 (2022.01)
CPC C09K 23/54 (2022.01) [C09K 23/38 (2022.01)] 13 Claims
 
1. A cationic surfactant having general formula (I):
[Z-D-N(-D1-NR13+)a(R)2-a][X−]a  (I),
wherein Z is a siloxane moiety comprising an inorganic silicon-oxygen-silicon group, with organosilicon and/or organic side groups attached to the silicon atoms; D is a covalent bond or a divalent linking group; D1 is a divalent linking group; R is H or an unsubstituted hydrocarbyl group having from 1 to 4 carbon atoms; each R1 is an independently selected unsubstituted hydrocarbyl group having from 1 to 4 carbon atoms; subscript a is 1 or 2; and each X is an anion.