US 12,454,484 B2
Preparation method for admixture for plasterboard, admixture prepared thereby, and composition for forming plasterboard comprising same
Young Gil Ju, Daejeon (KR); Dae Jin Kim, Cheonan-si (KR); Min Jae Lee, Asan-si (KR); Ju Hwan Kim, Yongin-si (KR); Cheol Yong Cha, Hwaseong-si (KR); and Kwang Young Park, Yongin-si (KR)
Assigned to SILKROAD C&T, Seoul (KR)
Appl. No. 17/596,112
Filed by SILKROAD C&T, Seoul (KR)
PCT Filed May 11, 2020, PCT No. PCT/KR2020/006140
§ 371(c)(1), (2) Date Dec. 3, 2021,
PCT Pub. No. WO2020/246718, PCT Pub. Date Dec. 10, 2020.
Claims priority of application No. 10-2019-0066363 (KR), filed on Jun. 5, 2019; and application No. 10-2020-0011517 (KR), filed on Jan. 31, 2020.
Prior Publication US 2022/0227668 A1, Jul. 21, 2022
Int. Cl. C04B 24/22 (2006.01); C04B 24/26 (2006.01); C04B 28/14 (2006.01); C04B 40/00 (2006.01); C04B 103/14 (2006.01); C04B 111/40 (2006.01); C08F 12/08 (2006.01)
CPC C04B 24/22 (2013.01) [C04B 24/2647 (2013.01); C04B 28/14 (2013.01); C04B 40/0039 (2013.01); C08F 12/08 (2013.01); C04B 2103/14 (2013.01); C04B 2111/40 (2013.01); C08F 2810/00 (2013.01)] 12 Claims
 
1. A method for preparing an admixture for a plasterboard, comprising subjecting a polystyrene to a sulfonation with a sulfonating agent comprising a sulfuric acid to give a sulfonated polystyrene (SPS)-based compound of Formula 1, and
adding water to the sulfonated polystyrene (SPS)-based compound of Formula 1 to prepare the admixture for a plasterboard:

OG Complex Work Unit Chemistry
wherein, in Formula 1,
R1 and R2 are selected from hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a nitro group, a C1-C20 alkyl group, a C2-C20 alkenyl group, a C2-C20 alkynyl group, a C1-C20 alkoxy group, a C3-C10 cycloalkyl group, a C6-C20 aryl group, a C1-C20 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic condensed heteropolycyclic group,
a1 is an integer selected from 1 to 5,
a2 is an integer selected from 1 to 4,
M+ is H+, Li+, Na+, K+, or NH4+,
x is an integer selected from 5 to 50,000, and
y is an integer selected from 1 to 50,000,
wherein a degree of sulfonation (DS) of the SPS-based compound is in a range of 15% to 60%.