US 11,912,804 B2
Core-shell copolymer, method for preparing the same and thermoplastic resin composition including the same
Kwang Jin Lee, Daejeon (KR); Yoon Ho Kim, Daejeon (KR); Sang Il Nam, Daejeon (KR); Kyung Bok Sun, Daejeon (KR); Chang No Lee, Daejeon (KR); and Sang Hoon Han, Daejeon (KR)
Assigned to LG Chem, Ltd., (KR)
Appl. No. 16/966,672
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Oct. 11, 2019, PCT No. PCT/KR2019/013391
§ 371(c)(1), (2) Date Jul. 31, 2020,
PCT Pub. No. WO2020/101182, PCT Pub. Date May 22, 2020.
Claims priority of application No. 10-2018-0141167 (KR), filed on Nov. 15, 2018.
Prior Publication US 2021/0032391 A1, Feb. 4, 2021
Int. Cl. C08F 279/02 (2006.01); C08F 220/38 (2006.01); C08K 5/521 (2006.01); C08L 27/24 (2006.01); C08F 230/02 (2006.01); C08F 220/18 (2006.01); C08F 2/44 (2006.01)
CPC C08F 279/02 (2013.01) [C08F 2/44 (2013.01); C08F 220/38 (2013.01); C08K 5/521 (2013.01); C08L 27/24 (2013.01); C08F 220/18 (2013.01); C08F 220/382 (2020.02); C08F 230/02 (2013.01)] 10 Claims
 
1. A core-shell copolymer, comprising:
a core; and
a shell surrounding the core,
wherein the core includes a conjugated diene-based monomer-derived repeating unit and a phosphate-based cross-linking agent-derived cross-linking part, the phosphate-based cross-linking agent represented by the following Formula 1,
wherein the shell includes a first alkyl (meth)acrylate monomer-derived repeating unit, a second alkyl (meth)acrylate monomer-derived repeating unit, and a sulfonate-based ionic monomer-derived repeating unit, the sulfonate-based ionic monomer represented by the following Formula 2,
wherein the core is 68 parts by weight to 92 parts by weight and the shell is 8 parts by weight to 32 parts by weight, based on a total of 100 parts by weight of the core-shell copolymer,
wherein the core has a swell index of 2.7 to 10.9,
wherein the shell includes 1 weight percent (wt %) to 16 wt % of the sulfonate-based ionic monomer-derived repeating unit, based on the total weight of the shell, and
wherein the shell has a weight average molecular weight of 105,000 g/mol to 645,000 g/mol:

OG Complex Work Unit Chemistry
wherein
R1 and R2 are each independently an alkylene group having 1 to 30 carbon atoms, and
R3 and R4 are each independently hydrogen or a methyl group, and

OG Complex Work Unit Chemistry
wherein
R5 is a single bond or an alkylene group having 1 to 30 carbon atoms,
R6 is hydrogen or a methyl group,
M is potassium (K), sodium (Na), or hydrogen, and
n is 0 or 1,
wherein the swell index of the core is measured by immersing the core into toluene for 24 hours, and obtained by the following equation:
swell index=weight of the core swollen in toluene/weight of the core after drying the swollen core to remove toluene.