US 12,466,928 B2
Complex and material containing same for oil-water separation
Byeong-Kyu Lee, Ulsan (KR); and Viet Ha Tran Thi, Ulsan (KR)
Assigned to University of Ulsan Foundation for Industry Cooperation, Ulsan (KR)
Appl. No. 16/759,011
Filed by University of Ulsan Foundation for Industry Cooperation, Ulsan (KR)
PCT Filed Oct. 11, 2018, PCT No. PCT/KR2018/011935
§ 371(c)(1), (2) Date Sep. 30, 2020,
PCT Pub. No. WO2019/083198, PCT Pub. Date May 2, 2019.
Claims priority of application No. 10-2017-0139210 (KR), filed on Oct. 25, 2017; application No. 10-2017-0144611 (KR), filed on Nov. 1, 2017; application No. 10-2018-0042046 (KR), filed on Apr. 11, 2018; and application No. 10-2018-0042049 (KR), filed on Apr. 11, 2018.
Prior Publication US 2021/0179797 A1, Jun. 17, 2021
Int. Cl. C08J 9/00 (2006.01); B01D 17/02 (2006.01); C02F 1/40 (2023.01); C08J 7/06 (2006.01); C08J 9/36 (2006.01); C08K 3/22 (2006.01); C08K 5/09 (2006.01); C08K 5/54 (2006.01); C08L 61/28 (2006.01)
CPC C08J 9/0066 (2013.01) [B01D 17/02 (2013.01); C02F 1/40 (2013.01); C08J 7/06 (2013.01); C08J 9/365 (2013.01); C08K 3/22 (2013.01); C08K 5/09 (2013.01); C08K 5/54 (2013.01); C08L 61/28 (2013.01); C08K 2003/2296 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A water repellency complex for oil-water separation comprising:
a polymer sponge having a cavernous porous structure;
a zinc oxide particle layer formed on the polymer sponge; and
a superhydrophobic coating layer formed on the zinc oxide particle layer,
wherein the superhydrophobic coating layer includes C10 to C30 fatty acid and a silane compound substituted with a C4 to C20 fluorinated alkyl group and a halogen group,
wherein the polymer sponge includes one or more polymers selected from the group consisting of melamine resin and polyurethane,
wherein the zinc oxide particle layer has a micro-nano structure in which zinc oxide particles are agglomerated in a flame or snowflake shape on the surface of the polymer sponge,
wherein the zinc oxide particles have an average length of 2 μm to 10 μm and an average thickness of 0.1 μm to 2 μm, and a ratio (L/D) of an average length (L) to an average thickness (D) ranges from 2 to 10,
wherein the fatty acid includes one or more selected from the group consisting of capric acid, lauric acid, myristic acid, stearic acid, arachidic acid, and behenic acid,
wherein the complex has an average sliding water contact angle and an average shedding water contact angle of 7°, and
wherein the complex has an average static water contact angle of 170° to 180°.