US 11,739,476 B2
Method of preparing water-based surface treatment agent and water-based surface treatment agent prepared using the same
Chul Hee Min, Seoul (KR); Yongbae Jung, Seoul (KR); and Inhyuk Lee, Seoul (KR)
Assigned to LG Hausys, Ltd., Seoul (KR)
Appl. No. 16/641,935
Filed by LG HAUSYS, LTD., Seoul (KR)
PCT Filed Sep. 11, 2018, PCT No. PCT/KR2018/010646
§ 371(c)(1), (2) Date Feb. 25, 2020,
PCT Pub. No. WO2019/054730, PCT Pub. Date Mar. 21, 2019.
Claims priority of application No. 10-2017-0117553 (KR), filed on Sep. 14, 2017; and application No. 10-2017-0156793 (KR), filed on Nov. 22, 2017.
Prior Publication US 2020/0248402 A1, Aug. 6, 2020
Int. Cl. C09D 7/65 (2018.01); C09D 175/04 (2006.01); B32B 38/06 (2006.01); B32B 5/18 (2006.01); D06N 3/14 (2006.01); D06N 3/06 (2006.01); B32B 5/02 (2006.01); B32B 5/24 (2006.01); B32B 27/06 (2006.01); B32B 27/30 (2006.01); B32B 38/00 (2006.01); D06N 3/00 (2006.01); B29C 59/04 (2006.01); B29C 59/06 (2006.01); B60N 2/58 (2006.01)
CPC D06N 3/14 (2013.01) [B29C 59/046 (2013.01); B29C 59/06 (2013.01); B32B 5/022 (2013.01); B32B 5/024 (2013.01); B32B 5/18 (2013.01); B32B 5/245 (2013.01); B32B 27/065 (2013.01); B32B 27/304 (2013.01); B32B 38/0008 (2013.01); B32B 38/06 (2013.01); C09D 7/65 (2018.01); C09D 175/04 (2013.01); D06N 3/0077 (2013.01); D06N 3/06 (2013.01); B32B 2266/0235 (2013.01); B32B 2601/00 (2013.01); B32B 2605/003 (2013.01); B32B 2605/08 (2013.01); B60N 2/5891 (2013.01); D06N 2211/28 (2013.01); D10B 2505/12 (2013.01)] 3 Claims
 
1. A method of preparing a water-based surface treatment agent, comprising:
(a) adding 1 to 25 parts by weight of a curing agent (B) to 1 to 25 parts by weight of a water-based solvent (C) and performing stirring at 20 to 30° C. for 40 minutes to 5 hours;
(b) adding 1 to 10 parts by weight of a silicon compound (D), 0.1 to 0.5 parts by weight of an antifoaming agent and 0.1 to 0.5 parts by weight of a leveling agent to 100 parts by weight of a main material (A), and performing stirring at 20 to 30° C.; and
(c) adding the mixture of step (a) to the mixture of step (b) and performing stirring at 20 to 30° C. for 0.2 to 1 hour, and
wherein the water-based solvent (C) comprises water, an alcohol, or a mixture thereof,
wherein the main material (A) is a main material (A-1), wherein the main material (A-1) comprises a polyurethane having one or more functional groups selected from the group consisting of a carboxylic acid group, a hydroxyl group, an amino group, and a combination thereof per molecule, dispersed in an amount of 5 to 30% by weight in a water-based solvent, and
wherein the silicon compound (D) is a polysiloxane of a liquid form dispersed in water or a polysiloxane of a bead form, wherein a content of the polysiloxane in the silicon compound of a liquid form is 5 to 30% by weight.